130f712c9SDave Chinner /* 230f712c9SDave Chinner * Copyright (c) 2000-2006 Silicon Graphics, Inc. 330f712c9SDave Chinner * All Rights Reserved. 430f712c9SDave Chinner * 530f712c9SDave Chinner * This program is free software; you can redistribute it and/or 630f712c9SDave Chinner * modify it under the terms of the GNU General Public License as 730f712c9SDave Chinner * published by the Free Software Foundation. 830f712c9SDave Chinner * 930f712c9SDave Chinner * This program is distributed in the hope that it would be useful, 1030f712c9SDave Chinner * but WITHOUT ANY WARRANTY; without even the implied warranty of 1130f712c9SDave Chinner * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 1230f712c9SDave Chinner * GNU General Public License for more details. 1330f712c9SDave Chinner * 1430f712c9SDave Chinner * You should have received a copy of the GNU General Public License 1530f712c9SDave Chinner * along with this program; if not, write the Free Software Foundation, 1630f712c9SDave Chinner * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 1730f712c9SDave Chinner */ 1830f712c9SDave Chinner #include "xfs.h" 1930f712c9SDave Chinner #include "xfs_fs.h" 2030f712c9SDave Chinner #include "xfs_shared.h" 2130f712c9SDave Chinner #include "xfs_format.h" 2230f712c9SDave Chinner #include "xfs_log_format.h" 2330f712c9SDave Chinner #include "xfs_trans_resv.h" 2430f712c9SDave Chinner #include "xfs_bit.h" 2530f712c9SDave Chinner #include "xfs_sb.h" 2630f712c9SDave Chinner #include "xfs_mount.h" 273ab78df2SDarrick J. Wong #include "xfs_defer.h" 2830f712c9SDave Chinner #include "xfs_da_format.h" 2930f712c9SDave Chinner #include "xfs_da_btree.h" 3030f712c9SDave Chinner #include "xfs_dir2.h" 3130f712c9SDave Chinner #include "xfs_inode.h" 3230f712c9SDave Chinner #include "xfs_btree.h" 3330f712c9SDave Chinner #include "xfs_trans.h" 3430f712c9SDave Chinner #include "xfs_inode_item.h" 3530f712c9SDave Chinner #include "xfs_extfree_item.h" 3630f712c9SDave Chinner #include "xfs_alloc.h" 3730f712c9SDave Chinner #include "xfs_bmap.h" 3830f712c9SDave Chinner #include "xfs_bmap_util.h" 3930f712c9SDave Chinner #include "xfs_bmap_btree.h" 4030f712c9SDave Chinner #include "xfs_rtalloc.h" 4130f712c9SDave Chinner #include "xfs_error.h" 4230f712c9SDave Chinner #include "xfs_quota.h" 4330f712c9SDave Chinner #include "xfs_trans_space.h" 4430f712c9SDave Chinner #include "xfs_buf_item.h" 4530f712c9SDave Chinner #include "xfs_trace.h" 4630f712c9SDave Chinner #include "xfs_symlink.h" 4730f712c9SDave Chinner #include "xfs_attr_leaf.h" 4830f712c9SDave Chinner #include "xfs_filestream.h" 49340785ccSDarrick J. Wong #include "xfs_rmap.h" 503fd129b6SDarrick J. Wong #include "xfs_ag_resv.h" 5162aab20fSDarrick J. Wong #include "xfs_refcount.h" 52fd26a880SDarrick J. Wong #include "xfs_rmap_btree.h" 53974ae922SBrian Foster #include "xfs_icache.h" 5430f712c9SDave Chinner 5530f712c9SDave Chinner 5630f712c9SDave Chinner kmem_zone_t *xfs_bmap_free_item_zone; 5730f712c9SDave Chinner 5830f712c9SDave Chinner /* 5930f712c9SDave Chinner * Miscellaneous helper functions 6030f712c9SDave Chinner */ 6130f712c9SDave Chinner 6230f712c9SDave Chinner /* 6330f712c9SDave Chinner * Compute and fill in the value of the maximum depth of a bmap btree 6430f712c9SDave Chinner * in this filesystem. Done once, during mount. 6530f712c9SDave Chinner */ 6630f712c9SDave Chinner void 6730f712c9SDave Chinner xfs_bmap_compute_maxlevels( 6830f712c9SDave Chinner xfs_mount_t *mp, /* file system mount structure */ 6930f712c9SDave Chinner int whichfork) /* data or attr fork */ 7030f712c9SDave Chinner { 7130f712c9SDave Chinner int level; /* btree level */ 7230f712c9SDave Chinner uint maxblocks; /* max blocks at this level */ 7330f712c9SDave Chinner uint maxleafents; /* max leaf entries possible */ 7430f712c9SDave Chinner int maxrootrecs; /* max records in root block */ 7530f712c9SDave Chinner int minleafrecs; /* min records in leaf block */ 7630f712c9SDave Chinner int minnoderecs; /* min records in node block */ 7730f712c9SDave Chinner int sz; /* root block size */ 7830f712c9SDave Chinner 7930f712c9SDave Chinner /* 8030f712c9SDave Chinner * The maximum number of extents in a file, hence the maximum 8130f712c9SDave Chinner * number of leaf entries, is controlled by the type of di_nextents 8230f712c9SDave Chinner * (a signed 32-bit number, xfs_extnum_t), or by di_anextents 8330f712c9SDave Chinner * (a signed 16-bit number, xfs_aextnum_t). 8430f712c9SDave Chinner * 8530f712c9SDave Chinner * Note that we can no longer assume that if we are in ATTR1 that 8630f712c9SDave Chinner * the fork offset of all the inodes will be 8730f712c9SDave Chinner * (xfs_default_attroffset(ip) >> 3) because we could have mounted 8830f712c9SDave Chinner * with ATTR2 and then mounted back with ATTR1, keeping the 8930f712c9SDave Chinner * di_forkoff's fixed but probably at various positions. Therefore, 9030f712c9SDave Chinner * for both ATTR1 and ATTR2 we have to assume the worst case scenario 9130f712c9SDave Chinner * of a minimum size available. 9230f712c9SDave Chinner */ 9330f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) { 9430f712c9SDave Chinner maxleafents = MAXEXTNUM; 9530f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS); 9630f712c9SDave Chinner } else { 9730f712c9SDave Chinner maxleafents = MAXAEXTNUM; 9830f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINABTPTRS); 9930f712c9SDave Chinner } 10030f712c9SDave Chinner maxrootrecs = xfs_bmdr_maxrecs(sz, 0); 10130f712c9SDave Chinner minleafrecs = mp->m_bmap_dmnr[0]; 10230f712c9SDave Chinner minnoderecs = mp->m_bmap_dmnr[1]; 10330f712c9SDave Chinner maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; 10430f712c9SDave Chinner for (level = 1; maxblocks > 1; level++) { 10530f712c9SDave Chinner if (maxblocks <= maxrootrecs) 10630f712c9SDave Chinner maxblocks = 1; 10730f712c9SDave Chinner else 10830f712c9SDave Chinner maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; 10930f712c9SDave Chinner } 11030f712c9SDave Chinner mp->m_bm_maxlevels[whichfork] = level; 11130f712c9SDave Chinner } 11230f712c9SDave Chinner 11330f712c9SDave Chinner STATIC int /* error */ 11430f712c9SDave Chinner xfs_bmbt_lookup_eq( 11530f712c9SDave Chinner struct xfs_btree_cur *cur, 11630f712c9SDave Chinner xfs_fileoff_t off, 11730f712c9SDave Chinner xfs_fsblock_t bno, 11830f712c9SDave Chinner xfs_filblks_t len, 11930f712c9SDave Chinner int *stat) /* success/failure */ 12030f712c9SDave Chinner { 12130f712c9SDave Chinner cur->bc_rec.b.br_startoff = off; 12230f712c9SDave Chinner cur->bc_rec.b.br_startblock = bno; 12330f712c9SDave Chinner cur->bc_rec.b.br_blockcount = len; 12430f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat); 12530f712c9SDave Chinner } 12630f712c9SDave Chinner 12730f712c9SDave Chinner STATIC int /* error */ 12830f712c9SDave Chinner xfs_bmbt_lookup_ge( 12930f712c9SDave Chinner struct xfs_btree_cur *cur, 13030f712c9SDave Chinner xfs_fileoff_t off, 13130f712c9SDave Chinner xfs_fsblock_t bno, 13230f712c9SDave Chinner xfs_filblks_t len, 13330f712c9SDave Chinner int *stat) /* success/failure */ 13430f712c9SDave Chinner { 13530f712c9SDave Chinner cur->bc_rec.b.br_startoff = off; 13630f712c9SDave Chinner cur->bc_rec.b.br_startblock = bno; 13730f712c9SDave Chinner cur->bc_rec.b.br_blockcount = len; 13830f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat); 13930f712c9SDave Chinner } 14030f712c9SDave Chinner 14130f712c9SDave Chinner /* 14230f712c9SDave Chinner * Check if the inode needs to be converted to btree format. 14330f712c9SDave Chinner */ 14430f712c9SDave Chinner static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork) 14530f712c9SDave Chinner { 14660b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 14760b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 14830f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 14930f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 15030f712c9SDave Chinner } 15130f712c9SDave Chinner 15230f712c9SDave Chinner /* 15330f712c9SDave Chinner * Check if the inode should be converted to extent format. 15430f712c9SDave Chinner */ 15530f712c9SDave Chinner static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork) 15630f712c9SDave Chinner { 15760b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 15860b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE && 15930f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) <= 16030f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 16130f712c9SDave Chinner } 16230f712c9SDave Chinner 16330f712c9SDave Chinner /* 16430f712c9SDave Chinner * Update the record referred to by cur to the value given 16530f712c9SDave Chinner * by [off, bno, len, state]. 16630f712c9SDave Chinner * This either works (return 0) or gets an EFSCORRUPTED error. 16730f712c9SDave Chinner */ 16830f712c9SDave Chinner STATIC int 16930f712c9SDave Chinner xfs_bmbt_update( 17030f712c9SDave Chinner struct xfs_btree_cur *cur, 17130f712c9SDave Chinner xfs_fileoff_t off, 17230f712c9SDave Chinner xfs_fsblock_t bno, 17330f712c9SDave Chinner xfs_filblks_t len, 17430f712c9SDave Chinner xfs_exntst_t state) 17530f712c9SDave Chinner { 17630f712c9SDave Chinner union xfs_btree_rec rec; 17730f712c9SDave Chinner 17830f712c9SDave Chinner xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state); 17930f712c9SDave Chinner return xfs_btree_update(cur, &rec); 18030f712c9SDave Chinner } 18130f712c9SDave Chinner 18230f712c9SDave Chinner /* 18330f712c9SDave Chinner * Compute the worst-case number of indirect blocks that will be used 18430f712c9SDave Chinner * for ip's delayed extent of length "len". 18530f712c9SDave Chinner */ 18630f712c9SDave Chinner STATIC xfs_filblks_t 18730f712c9SDave Chinner xfs_bmap_worst_indlen( 18830f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 18930f712c9SDave Chinner xfs_filblks_t len) /* delayed extent length */ 19030f712c9SDave Chinner { 19130f712c9SDave Chinner int level; /* btree level number */ 19230f712c9SDave Chinner int maxrecs; /* maximum record count at this level */ 19330f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 19430f712c9SDave Chinner xfs_filblks_t rval; /* return value */ 195fd26a880SDarrick J. Wong xfs_filblks_t orig_len; 19630f712c9SDave Chinner 19730f712c9SDave Chinner mp = ip->i_mount; 198fd26a880SDarrick J. Wong 199fd26a880SDarrick J. Wong /* Calculate the worst-case size of the bmbt. */ 200fd26a880SDarrick J. Wong orig_len = len; 20130f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[0]; 20230f712c9SDave Chinner for (level = 0, rval = 0; 20330f712c9SDave Chinner level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK); 20430f712c9SDave Chinner level++) { 20530f712c9SDave Chinner len += maxrecs - 1; 20630f712c9SDave Chinner do_div(len, maxrecs); 20730f712c9SDave Chinner rval += len; 208fd26a880SDarrick J. Wong if (len == 1) { 209fd26a880SDarrick J. Wong rval += XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) - 21030f712c9SDave Chinner level - 1; 211fd26a880SDarrick J. Wong break; 212fd26a880SDarrick J. Wong } 21330f712c9SDave Chinner if (level == 0) 21430f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[1]; 21530f712c9SDave Chinner } 216fd26a880SDarrick J. Wong 217fd26a880SDarrick J. Wong /* Calculate the worst-case size of the rmapbt. */ 218fd26a880SDarrick J. Wong if (xfs_sb_version_hasrmapbt(&mp->m_sb)) 219fd26a880SDarrick J. Wong rval += 1 + xfs_rmapbt_calc_size(mp, orig_len) + 220fd26a880SDarrick J. Wong mp->m_rmap_maxlevels; 221fd26a880SDarrick J. Wong 22230f712c9SDave Chinner return rval; 22330f712c9SDave Chinner } 22430f712c9SDave Chinner 22530f712c9SDave Chinner /* 22630f712c9SDave Chinner * Calculate the default attribute fork offset for newly created inodes. 22730f712c9SDave Chinner */ 22830f712c9SDave Chinner uint 22930f712c9SDave Chinner xfs_default_attroffset( 23030f712c9SDave Chinner struct xfs_inode *ip) 23130f712c9SDave Chinner { 23230f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 23330f712c9SDave Chinner uint offset; 23430f712c9SDave Chinner 23530f712c9SDave Chinner if (mp->m_sb.sb_inodesize == 256) { 23630f712c9SDave Chinner offset = XFS_LITINO(mp, ip->i_d.di_version) - 23730f712c9SDave Chinner XFS_BMDR_SPACE_CALC(MINABTPTRS); 23830f712c9SDave Chinner } else { 23930f712c9SDave Chinner offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); 24030f712c9SDave Chinner } 24130f712c9SDave Chinner 24230f712c9SDave Chinner ASSERT(offset < XFS_LITINO(mp, ip->i_d.di_version)); 24330f712c9SDave Chinner return offset; 24430f712c9SDave Chinner } 24530f712c9SDave Chinner 24630f712c9SDave Chinner /* 24730f712c9SDave Chinner * Helper routine to reset inode di_forkoff field when switching 24830f712c9SDave Chinner * attribute fork from local to extent format - we reset it where 24930f712c9SDave Chinner * possible to make space available for inline data fork extents. 25030f712c9SDave Chinner */ 25130f712c9SDave Chinner STATIC void 25230f712c9SDave Chinner xfs_bmap_forkoff_reset( 25330f712c9SDave Chinner xfs_inode_t *ip, 25430f712c9SDave Chinner int whichfork) 25530f712c9SDave Chinner { 25630f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK && 25730f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_DEV && 25830f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_UUID && 25930f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_BTREE) { 26030f712c9SDave Chinner uint dfl_forkoff = xfs_default_attroffset(ip) >> 3; 26130f712c9SDave Chinner 26230f712c9SDave Chinner if (dfl_forkoff > ip->i_d.di_forkoff) 26330f712c9SDave Chinner ip->i_d.di_forkoff = dfl_forkoff; 26430f712c9SDave Chinner } 26530f712c9SDave Chinner } 26630f712c9SDave Chinner 26730f712c9SDave Chinner #ifdef DEBUG 26830f712c9SDave Chinner STATIC struct xfs_buf * 26930f712c9SDave Chinner xfs_bmap_get_bp( 27030f712c9SDave Chinner struct xfs_btree_cur *cur, 27130f712c9SDave Chinner xfs_fsblock_t bno) 27230f712c9SDave Chinner { 27330f712c9SDave Chinner struct xfs_log_item_desc *lidp; 27430f712c9SDave Chinner int i; 27530f712c9SDave Chinner 27630f712c9SDave Chinner if (!cur) 27730f712c9SDave Chinner return NULL; 27830f712c9SDave Chinner 27930f712c9SDave Chinner for (i = 0; i < XFS_BTREE_MAXLEVELS; i++) { 28030f712c9SDave Chinner if (!cur->bc_bufs[i]) 28130f712c9SDave Chinner break; 28230f712c9SDave Chinner if (XFS_BUF_ADDR(cur->bc_bufs[i]) == bno) 28330f712c9SDave Chinner return cur->bc_bufs[i]; 28430f712c9SDave Chinner } 28530f712c9SDave Chinner 28630f712c9SDave Chinner /* Chase down all the log items to see if the bp is there */ 28730f712c9SDave Chinner list_for_each_entry(lidp, &cur->bc_tp->t_items, lid_trans) { 28830f712c9SDave Chinner struct xfs_buf_log_item *bip; 28930f712c9SDave Chinner bip = (struct xfs_buf_log_item *)lidp->lid_item; 29030f712c9SDave Chinner if (bip->bli_item.li_type == XFS_LI_BUF && 29130f712c9SDave Chinner XFS_BUF_ADDR(bip->bli_buf) == bno) 29230f712c9SDave Chinner return bip->bli_buf; 29330f712c9SDave Chinner } 29430f712c9SDave Chinner 29530f712c9SDave Chinner return NULL; 29630f712c9SDave Chinner } 29730f712c9SDave Chinner 29830f712c9SDave Chinner STATIC void 29930f712c9SDave Chinner xfs_check_block( 30030f712c9SDave Chinner struct xfs_btree_block *block, 30130f712c9SDave Chinner xfs_mount_t *mp, 30230f712c9SDave Chinner int root, 30330f712c9SDave Chinner short sz) 30430f712c9SDave Chinner { 30530f712c9SDave Chinner int i, j, dmxr; 30630f712c9SDave Chinner __be64 *pp, *thispa; /* pointer to block address */ 30730f712c9SDave Chinner xfs_bmbt_key_t *prevp, *keyp; 30830f712c9SDave Chinner 30930f712c9SDave Chinner ASSERT(be16_to_cpu(block->bb_level) > 0); 31030f712c9SDave Chinner 31130f712c9SDave Chinner prevp = NULL; 31230f712c9SDave Chinner for( i = 1; i <= xfs_btree_get_numrecs(block); i++) { 31330f712c9SDave Chinner dmxr = mp->m_bmap_dmxr[0]; 31430f712c9SDave Chinner keyp = XFS_BMBT_KEY_ADDR(mp, block, i); 31530f712c9SDave Chinner 31630f712c9SDave Chinner if (prevp) { 31730f712c9SDave Chinner ASSERT(be64_to_cpu(prevp->br_startoff) < 31830f712c9SDave Chinner be64_to_cpu(keyp->br_startoff)); 31930f712c9SDave Chinner } 32030f712c9SDave Chinner prevp = keyp; 32130f712c9SDave Chinner 32230f712c9SDave Chinner /* 32330f712c9SDave Chinner * Compare the block numbers to see if there are dups. 32430f712c9SDave Chinner */ 32530f712c9SDave Chinner if (root) 32630f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, i, sz); 32730f712c9SDave Chinner else 32830f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, i, dmxr); 32930f712c9SDave Chinner 33030f712c9SDave Chinner for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) { 33130f712c9SDave Chinner if (root) 33230f712c9SDave Chinner thispa = XFS_BMAP_BROOT_PTR_ADDR(mp, block, j, sz); 33330f712c9SDave Chinner else 33430f712c9SDave Chinner thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr); 33530f712c9SDave Chinner if (*thispa == *pp) { 33630f712c9SDave Chinner xfs_warn(mp, "%s: thispa(%d) == pp(%d) %Ld", 33730f712c9SDave Chinner __func__, j, i, 33830f712c9SDave Chinner (unsigned long long)be64_to_cpu(*thispa)); 33930f712c9SDave Chinner panic("%s: ptrs are equal in node\n", 34030f712c9SDave Chinner __func__); 34130f712c9SDave Chinner } 34230f712c9SDave Chinner } 34330f712c9SDave Chinner } 34430f712c9SDave Chinner } 34530f712c9SDave Chinner 34630f712c9SDave Chinner /* 34730f712c9SDave Chinner * Check that the extents for the inode ip are in the right order in all 348e3543819SDave Chinner * btree leaves. THis becomes prohibitively expensive for large extent count 349e3543819SDave Chinner * files, so don't bother with inodes that have more than 10,000 extents in 350e3543819SDave Chinner * them. The btree record ordering checks will still be done, so for such large 351e3543819SDave Chinner * bmapbt constructs that is going to catch most corruptions. 35230f712c9SDave Chinner */ 35330f712c9SDave Chinner STATIC void 35430f712c9SDave Chinner xfs_bmap_check_leaf_extents( 35530f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor or null */ 35630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 35730f712c9SDave Chinner int whichfork) /* data or attr fork */ 35830f712c9SDave Chinner { 35930f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 36030f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 36130f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 36230f712c9SDave Chinner int error; /* error return value */ 36330f712c9SDave Chinner xfs_extnum_t i=0, j; /* index into the extents list */ 36430f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 36530f712c9SDave Chinner int level; /* btree level, for checking */ 36630f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 36730f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 36830f712c9SDave Chinner xfs_bmbt_rec_t *ep; /* pointer to current extent */ 36930f712c9SDave Chinner xfs_bmbt_rec_t last = {0, 0}; /* last extent in prev block */ 37030f712c9SDave Chinner xfs_bmbt_rec_t *nextp; /* pointer to next extent */ 37130f712c9SDave Chinner int bp_release = 0; 37230f712c9SDave Chinner 37330f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) { 37430f712c9SDave Chinner return; 37530f712c9SDave Chinner } 37630f712c9SDave Chinner 377e3543819SDave Chinner /* skip large extent count inodes */ 378e3543819SDave Chinner if (ip->i_d.di_nextents > 10000) 379e3543819SDave Chinner return; 380e3543819SDave Chinner 38130f712c9SDave Chinner bno = NULLFSBLOCK; 38230f712c9SDave Chinner mp = ip->i_mount; 38330f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 38430f712c9SDave Chinner block = ifp->if_broot; 38530f712c9SDave Chinner /* 38630f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 38730f712c9SDave Chinner */ 38830f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 38930f712c9SDave Chinner ASSERT(level > 0); 39030f712c9SDave Chinner xfs_check_block(block, mp, 1, ifp->if_broot_bytes); 39130f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 39230f712c9SDave Chinner bno = be64_to_cpu(*pp); 39330f712c9SDave Chinner 394d5cf09baSChristoph Hellwig ASSERT(bno != NULLFSBLOCK); 39530f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); 39630f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); 39730f712c9SDave Chinner 39830f712c9SDave Chinner /* 39930f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 40030f712c9SDave Chinner * pointer (leftmost) at each level. 40130f712c9SDave Chinner */ 40230f712c9SDave Chinner while (level-- > 0) { 40330f712c9SDave Chinner /* See if buf is in cur first */ 40430f712c9SDave Chinner bp_release = 0; 40530f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 40630f712c9SDave Chinner if (!bp) { 40730f712c9SDave Chinner bp_release = 1; 40830f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 40930f712c9SDave Chinner XFS_BMAP_BTREE_REF, 41030f712c9SDave Chinner &xfs_bmbt_buf_ops); 41130f712c9SDave Chinner if (error) 41230f712c9SDave Chinner goto error_norelse; 41330f712c9SDave Chinner } 41430f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 41530f712c9SDave Chinner if (level == 0) 41630f712c9SDave Chinner break; 41730f712c9SDave Chinner 41830f712c9SDave Chinner /* 41930f712c9SDave Chinner * Check this block for basic sanity (increasing keys and 42030f712c9SDave Chinner * no duplicate blocks). 42130f712c9SDave Chinner */ 42230f712c9SDave Chinner 42330f712c9SDave Chinner xfs_check_block(block, mp, 0, 0); 42430f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 42530f712c9SDave Chinner bno = be64_to_cpu(*pp); 426c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 427c29aad41SEric Sandeen XFS_FSB_SANITY_CHECK(mp, bno), error0); 42830f712c9SDave Chinner if (bp_release) { 42930f712c9SDave Chinner bp_release = 0; 43030f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 43130f712c9SDave Chinner } 43230f712c9SDave Chinner } 43330f712c9SDave Chinner 43430f712c9SDave Chinner /* 43530f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 43630f712c9SDave Chinner */ 43730f712c9SDave Chinner i = 0; 43830f712c9SDave Chinner 43930f712c9SDave Chinner /* 44030f712c9SDave Chinner * Loop over all leaf nodes checking that all extents are in the right order. 44130f712c9SDave Chinner */ 44230f712c9SDave Chinner for (;;) { 44330f712c9SDave Chinner xfs_fsblock_t nextbno; 44430f712c9SDave Chinner xfs_extnum_t num_recs; 44530f712c9SDave Chinner 44630f712c9SDave Chinner 44730f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 44830f712c9SDave Chinner 44930f712c9SDave Chinner /* 45030f712c9SDave Chinner * Read-ahead the next leaf block, if any. 45130f712c9SDave Chinner */ 45230f712c9SDave Chinner 45330f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 45430f712c9SDave Chinner 45530f712c9SDave Chinner /* 45630f712c9SDave Chinner * Check all the extents to make sure they are OK. 45730f712c9SDave Chinner * If we had a previous block, the last entry should 45830f712c9SDave Chinner * conform with the first entry in this one. 45930f712c9SDave Chinner */ 46030f712c9SDave Chinner 46130f712c9SDave Chinner ep = XFS_BMBT_REC_ADDR(mp, block, 1); 46230f712c9SDave Chinner if (i) { 46330f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(&last) + 46430f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(&last) <= 46530f712c9SDave Chinner xfs_bmbt_disk_get_startoff(ep)); 46630f712c9SDave Chinner } 46730f712c9SDave Chinner for (j = 1; j < num_recs; j++) { 46830f712c9SDave Chinner nextp = XFS_BMBT_REC_ADDR(mp, block, j + 1); 46930f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(ep) + 47030f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(ep) <= 47130f712c9SDave Chinner xfs_bmbt_disk_get_startoff(nextp)); 47230f712c9SDave Chinner ep = nextp; 47330f712c9SDave Chinner } 47430f712c9SDave Chinner 47530f712c9SDave Chinner last = *ep; 47630f712c9SDave Chinner i += num_recs; 47730f712c9SDave Chinner if (bp_release) { 47830f712c9SDave Chinner bp_release = 0; 47930f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 48030f712c9SDave Chinner } 48130f712c9SDave Chinner bno = nextbno; 48230f712c9SDave Chinner /* 48330f712c9SDave Chinner * If we've reached the end, stop. 48430f712c9SDave Chinner */ 48530f712c9SDave Chinner if (bno == NULLFSBLOCK) 48630f712c9SDave Chinner break; 48730f712c9SDave Chinner 48830f712c9SDave Chinner bp_release = 0; 48930f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 49030f712c9SDave Chinner if (!bp) { 49130f712c9SDave Chinner bp_release = 1; 49230f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 49330f712c9SDave Chinner XFS_BMAP_BTREE_REF, 49430f712c9SDave Chinner &xfs_bmbt_buf_ops); 49530f712c9SDave Chinner if (error) 49630f712c9SDave Chinner goto error_norelse; 49730f712c9SDave Chinner } 49830f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 49930f712c9SDave Chinner } 500a5fd276bSLuis de Bethencourt 50130f712c9SDave Chinner return; 50230f712c9SDave Chinner 50330f712c9SDave Chinner error0: 50430f712c9SDave Chinner xfs_warn(mp, "%s: at error0", __func__); 50530f712c9SDave Chinner if (bp_release) 50630f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 50730f712c9SDave Chinner error_norelse: 50830f712c9SDave Chinner xfs_warn(mp, "%s: BAD after btree leaves for %d extents", 50930f712c9SDave Chinner __func__, i); 51030f712c9SDave Chinner panic("%s: CORRUPTED BTREE OR SOMETHING", __func__); 51130f712c9SDave Chinner return; 51230f712c9SDave Chinner } 51330f712c9SDave Chinner 51430f712c9SDave Chinner /* 51530f712c9SDave Chinner * Add bmap trace insert entries for all the contents of the extent records. 51630f712c9SDave Chinner */ 51730f712c9SDave Chinner void 51830f712c9SDave Chinner xfs_bmap_trace_exlist( 51930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 52030f712c9SDave Chinner xfs_extnum_t cnt, /* count of entries in the list */ 521c44a1f22SEric Sandeen int whichfork, /* data or attr or cow fork */ 52230f712c9SDave Chinner unsigned long caller_ip) 52330f712c9SDave Chinner { 52430f712c9SDave Chinner xfs_extnum_t idx; /* extent record index */ 52530f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 52630f712c9SDave Chinner int state = 0; 52730f712c9SDave Chinner 52830f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 52930f712c9SDave Chinner state |= BMAP_ATTRFORK; 530c44a1f22SEric Sandeen else if (whichfork == XFS_COW_FORK) 531c44a1f22SEric Sandeen state |= BMAP_COWFORK; 53230f712c9SDave Chinner 53330f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 5345d829300SEric Sandeen ASSERT(cnt == xfs_iext_count(ifp)); 53530f712c9SDave Chinner for (idx = 0; idx < cnt; idx++) 5367710517fSEric Sandeen trace_xfs_extlist(ip, idx, state, caller_ip); 53730f712c9SDave Chinner } 53830f712c9SDave Chinner 53930f712c9SDave Chinner /* 54030f712c9SDave Chinner * Validate that the bmbt_irecs being returned from bmapi are valid 54130f712c9SDave Chinner * given the caller's original parameters. Specifically check the 54230f712c9SDave Chinner * ranges of the returned irecs to ensure that they only extend beyond 54330f712c9SDave Chinner * the given parameters if the XFS_BMAPI_ENTIRE flag was set. 54430f712c9SDave Chinner */ 54530f712c9SDave Chinner STATIC void 54630f712c9SDave Chinner xfs_bmap_validate_ret( 54730f712c9SDave Chinner xfs_fileoff_t bno, 54830f712c9SDave Chinner xfs_filblks_t len, 54930f712c9SDave Chinner int flags, 55030f712c9SDave Chinner xfs_bmbt_irec_t *mval, 55130f712c9SDave Chinner int nmap, 55230f712c9SDave Chinner int ret_nmap) 55330f712c9SDave Chinner { 55430f712c9SDave Chinner int i; /* index to map values */ 55530f712c9SDave Chinner 55630f712c9SDave Chinner ASSERT(ret_nmap <= nmap); 55730f712c9SDave Chinner 55830f712c9SDave Chinner for (i = 0; i < ret_nmap; i++) { 55930f712c9SDave Chinner ASSERT(mval[i].br_blockcount > 0); 56030f712c9SDave Chinner if (!(flags & XFS_BMAPI_ENTIRE)) { 56130f712c9SDave Chinner ASSERT(mval[i].br_startoff >= bno); 56230f712c9SDave Chinner ASSERT(mval[i].br_blockcount <= len); 56330f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount <= 56430f712c9SDave Chinner bno + len); 56530f712c9SDave Chinner } else { 56630f712c9SDave Chinner ASSERT(mval[i].br_startoff < bno + len); 56730f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount > 56830f712c9SDave Chinner bno); 56930f712c9SDave Chinner } 57030f712c9SDave Chinner ASSERT(i == 0 || 57130f712c9SDave Chinner mval[i - 1].br_startoff + mval[i - 1].br_blockcount == 57230f712c9SDave Chinner mval[i].br_startoff); 57330f712c9SDave Chinner ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK && 57430f712c9SDave Chinner mval[i].br_startblock != HOLESTARTBLOCK); 57530f712c9SDave Chinner ASSERT(mval[i].br_state == XFS_EXT_NORM || 57630f712c9SDave Chinner mval[i].br_state == XFS_EXT_UNWRITTEN); 57730f712c9SDave Chinner } 57830f712c9SDave Chinner } 57930f712c9SDave Chinner 58030f712c9SDave Chinner #else 58130f712c9SDave Chinner #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0) 58230f712c9SDave Chinner #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) 58330f712c9SDave Chinner #endif /* DEBUG */ 58430f712c9SDave Chinner 58530f712c9SDave Chinner /* 58630f712c9SDave Chinner * bmap free list manipulation functions 58730f712c9SDave Chinner */ 58830f712c9SDave Chinner 58930f712c9SDave Chinner /* 59030f712c9SDave Chinner * Add the extent to the list of extents to be free at transaction end. 59130f712c9SDave Chinner * The list is maintained sorted (by block number). 59230f712c9SDave Chinner */ 59330f712c9SDave Chinner void 59430f712c9SDave Chinner xfs_bmap_add_free( 595340785ccSDarrick J. Wong struct xfs_mount *mp, 596340785ccSDarrick J. Wong struct xfs_defer_ops *dfops, 597340785ccSDarrick J. Wong xfs_fsblock_t bno, 598340785ccSDarrick J. Wong xfs_filblks_t len, 599340785ccSDarrick J. Wong struct xfs_owner_info *oinfo) 60030f712c9SDave Chinner { 601310a75a3SDarrick J. Wong struct xfs_extent_free_item *new; /* new element */ 60230f712c9SDave Chinner #ifdef DEBUG 60330f712c9SDave Chinner xfs_agnumber_t agno; 60430f712c9SDave Chinner xfs_agblock_t agbno; 60530f712c9SDave Chinner 60630f712c9SDave Chinner ASSERT(bno != NULLFSBLOCK); 60730f712c9SDave Chinner ASSERT(len > 0); 60830f712c9SDave Chinner ASSERT(len <= MAXEXTLEN); 60930f712c9SDave Chinner ASSERT(!isnullstartblock(bno)); 61030f712c9SDave Chinner agno = XFS_FSB_TO_AGNO(mp, bno); 61130f712c9SDave Chinner agbno = XFS_FSB_TO_AGBNO(mp, bno); 61230f712c9SDave Chinner ASSERT(agno < mp->m_sb.sb_agcount); 61330f712c9SDave Chinner ASSERT(agbno < mp->m_sb.sb_agblocks); 61430f712c9SDave Chinner ASSERT(len < mp->m_sb.sb_agblocks); 61530f712c9SDave Chinner ASSERT(agbno + len <= mp->m_sb.sb_agblocks); 61630f712c9SDave Chinner #endif 61730f712c9SDave Chinner ASSERT(xfs_bmap_free_item_zone != NULL); 618340785ccSDarrick J. Wong 61930f712c9SDave Chinner new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP); 620310a75a3SDarrick J. Wong new->xefi_startblock = bno; 621310a75a3SDarrick J. Wong new->xefi_blockcount = (xfs_extlen_t)len; 622340785ccSDarrick J. Wong if (oinfo) 623340785ccSDarrick J. Wong new->xefi_oinfo = *oinfo; 624340785ccSDarrick J. Wong else 625340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&new->xefi_oinfo); 626ba9e7802SDarrick J. Wong trace_xfs_bmap_free_defer(mp, XFS_FSB_TO_AGNO(mp, bno), 0, 627ba9e7802SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bno), len); 6282c3234d1SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_FREE, &new->xefi_list); 62930f712c9SDave Chinner } 63030f712c9SDave Chinner 63130f712c9SDave Chinner /* 63230f712c9SDave Chinner * Inode fork format manipulation functions 63330f712c9SDave Chinner */ 63430f712c9SDave Chinner 63530f712c9SDave Chinner /* 63630f712c9SDave Chinner * Transform a btree format file with only one leaf node, where the 63730f712c9SDave Chinner * extents list will fit in the inode, into an extents format file. 63830f712c9SDave Chinner * Since the file extents are already in-core, all we have to do is 63930f712c9SDave Chinner * give up the space for the btree root and pitch the leaf block. 64030f712c9SDave Chinner */ 64130f712c9SDave Chinner STATIC int /* error */ 64230f712c9SDave Chinner xfs_bmap_btree_to_extents( 64330f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 64430f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 64530f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor */ 64630f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 64730f712c9SDave Chinner int whichfork) /* data or attr fork */ 64830f712c9SDave Chinner { 64930f712c9SDave Chinner /* REFERENCED */ 65030f712c9SDave Chinner struct xfs_btree_block *cblock;/* child btree block */ 65130f712c9SDave Chinner xfs_fsblock_t cbno; /* child block number */ 65230f712c9SDave Chinner xfs_buf_t *cbp; /* child block's buffer */ 65330f712c9SDave Chinner int error; /* error return value */ 65430f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork data */ 65530f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 65630f712c9SDave Chinner __be64 *pp; /* ptr to block address */ 65730f712c9SDave Chinner struct xfs_btree_block *rblock;/* root btree block */ 658340785ccSDarrick J. Wong struct xfs_owner_info oinfo; 65930f712c9SDave Chinner 66030f712c9SDave Chinner mp = ip->i_mount; 66130f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 66260b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 66330f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 66430f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 66530f712c9SDave Chinner rblock = ifp->if_broot; 66630f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_level) == 1); 66730f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1); 66830f712c9SDave Chinner ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1); 66930f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes); 67030f712c9SDave Chinner cbno = be64_to_cpu(*pp); 67130f712c9SDave Chinner *logflagsp = 0; 67230f712c9SDave Chinner #ifdef DEBUG 67330f712c9SDave Chinner if ((error = xfs_btree_check_lptr(cur, cbno, 1))) 67430f712c9SDave Chinner return error; 67530f712c9SDave Chinner #endif 67630f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp, XFS_BMAP_BTREE_REF, 67730f712c9SDave Chinner &xfs_bmbt_buf_ops); 67830f712c9SDave Chinner if (error) 67930f712c9SDave Chinner return error; 68030f712c9SDave Chinner cblock = XFS_BUF_TO_BLOCK(cbp); 68130f712c9SDave Chinner if ((error = xfs_btree_check_block(cur, cblock, 0, cbp))) 68230f712c9SDave Chinner return error; 683340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&oinfo, ip->i_ino, whichfork); 684340785ccSDarrick J. Wong xfs_bmap_add_free(mp, cur->bc_private.b.dfops, cbno, 1, &oinfo); 68530f712c9SDave Chinner ip->i_d.di_nblocks--; 68630f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); 68730f712c9SDave Chinner xfs_trans_binval(tp, cbp); 68830f712c9SDave Chinner if (cur->bc_bufs[0] == cbp) 68930f712c9SDave Chinner cur->bc_bufs[0] = NULL; 69030f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 69130f712c9SDave Chinner ASSERT(ifp->if_broot == NULL); 69230f712c9SDave Chinner ASSERT((ifp->if_flags & XFS_IFBROOT) == 0); 69330f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 69430f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 69530f712c9SDave Chinner return 0; 69630f712c9SDave Chinner } 69730f712c9SDave Chinner 69830f712c9SDave Chinner /* 69930f712c9SDave Chinner * Convert an extents-format file into a btree-format file. 70030f712c9SDave Chinner * The new file will have a root block (in the inode) and a single child block. 70130f712c9SDave Chinner */ 70230f712c9SDave Chinner STATIC int /* error */ 70330f712c9SDave Chinner xfs_bmap_extents_to_btree( 70430f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 70530f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 70630f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first-block-allocated */ 7072c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks freed in xaction */ 70830f712c9SDave Chinner xfs_btree_cur_t **curp, /* cursor returned to caller */ 70930f712c9SDave Chinner int wasdel, /* converting a delayed alloc */ 71030f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 71130f712c9SDave Chinner int whichfork) /* data or attr fork */ 71230f712c9SDave Chinner { 71330f712c9SDave Chinner struct xfs_btree_block *ablock; /* allocated (child) bt block */ 71430f712c9SDave Chinner xfs_buf_t *abp; /* buffer for ablock */ 71530f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 71630f712c9SDave Chinner xfs_bmbt_rec_t *arp; /* child record pointer */ 71730f712c9SDave Chinner struct xfs_btree_block *block; /* btree root block */ 71830f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 71930f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent record pointer */ 72030f712c9SDave Chinner int error; /* error return value */ 72130f712c9SDave Chinner xfs_extnum_t i, cnt; /* extent record index */ 72230f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 72330f712c9SDave Chinner xfs_bmbt_key_t *kp; /* root block key pointer */ 72430f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 72530f712c9SDave Chinner xfs_extnum_t nextents; /* number of file extents */ 72630f712c9SDave Chinner xfs_bmbt_ptr_t *pp; /* root block address pointer */ 72730f712c9SDave Chinner 72830f712c9SDave Chinner mp = ip->i_mount; 72960b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 73030f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 73130f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS); 73230f712c9SDave Chinner 73330f712c9SDave Chinner /* 73430f712c9SDave Chinner * Make space in the inode incore. 73530f712c9SDave Chinner */ 73630f712c9SDave Chinner xfs_iroot_realloc(ip, 1, whichfork); 73730f712c9SDave Chinner ifp->if_flags |= XFS_IFBROOT; 73830f712c9SDave Chinner 73930f712c9SDave Chinner /* 74030f712c9SDave Chinner * Fill in the root. 74130f712c9SDave Chinner */ 74230f712c9SDave Chinner block = ifp->if_broot; 74330f712c9SDave Chinner xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL, 744b6f41e44SEric Sandeen XFS_BTNUM_BMAP, 1, 1, ip->i_ino, 745f88ae46bSEric Sandeen XFS_BTREE_LONG_PTRS); 74630f712c9SDave Chinner /* 74730f712c9SDave Chinner * Need a cursor. Can't allocate until bb_level is filled in. 74830f712c9SDave Chinner */ 74930f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 75030f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 7512c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 75230f712c9SDave Chinner cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 75330f712c9SDave Chinner /* 75430f712c9SDave Chinner * Convert to a btree with two levels, one record in root. 75530f712c9SDave Chinner */ 75630f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE); 75730f712c9SDave Chinner memset(&args, 0, sizeof(args)); 75830f712c9SDave Chinner args.tp = tp; 75930f712c9SDave Chinner args.mp = mp; 760340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&args.oinfo, ip->i_ino, whichfork); 76130f712c9SDave Chinner args.firstblock = *firstblock; 76230f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 76330f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 76430f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino); 7652c3234d1SDarrick J. Wong } else if (dfops->dop_low) { 76630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 76730f712c9SDave Chinner args.fsbno = *firstblock; 76830f712c9SDave Chinner } else { 76930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 77030f712c9SDave Chinner args.fsbno = *firstblock; 77130f712c9SDave Chinner } 77230f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 77330f712c9SDave Chinner args.wasdel = wasdel; 77430f712c9SDave Chinner *logflagsp = 0; 77530f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) { 77630f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 77730f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 77830f712c9SDave Chinner return error; 77930f712c9SDave Chinner } 78090e2056dSDarrick J. Wong 7812fcc319dSChristoph Hellwig if (WARN_ON_ONCE(args.fsbno == NULLFSBLOCK)) { 7822fcc319dSChristoph Hellwig xfs_iroot_realloc(ip, -1, whichfork); 7832fcc319dSChristoph Hellwig xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 7842fcc319dSChristoph Hellwig return -ENOSPC; 7852fcc319dSChristoph Hellwig } 78630f712c9SDave Chinner /* 78730f712c9SDave Chinner * Allocation can't fail, the space was reserved. 78830f712c9SDave Chinner */ 78930f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 790410d17f6SChristoph Hellwig args.agno >= XFS_FSB_TO_AGNO(mp, *firstblock)); 79130f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock = args.fsbno; 79230f712c9SDave Chinner cur->bc_private.b.allocated++; 79330f712c9SDave Chinner ip->i_d.di_nblocks++; 79430f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); 79530f712c9SDave Chinner abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0); 79630f712c9SDave Chinner /* 79730f712c9SDave Chinner * Fill in the child block. 79830f712c9SDave Chinner */ 79930f712c9SDave Chinner abp->b_ops = &xfs_bmbt_buf_ops; 80030f712c9SDave Chinner ablock = XFS_BUF_TO_BLOCK(abp); 80130f712c9SDave Chinner xfs_btree_init_block_int(mp, ablock, abp->b_bn, 802b6f41e44SEric Sandeen XFS_BTNUM_BMAP, 0, 0, ip->i_ino, 80330f712c9SDave Chinner XFS_BTREE_LONG_PTRS); 80430f712c9SDave Chinner 80530f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 8065d829300SEric Sandeen nextents = xfs_iext_count(ifp); 80730f712c9SDave Chinner for (cnt = i = 0; i < nextents; i++) { 80830f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, i); 80930f712c9SDave Chinner if (!isnullstartblock(xfs_bmbt_get_startblock(ep))) { 81030f712c9SDave Chinner arp->l0 = cpu_to_be64(ep->l0); 81130f712c9SDave Chinner arp->l1 = cpu_to_be64(ep->l1); 81230f712c9SDave Chinner arp++; cnt++; 81330f712c9SDave Chinner } 81430f712c9SDave Chinner } 81530f712c9SDave Chinner ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork)); 81630f712c9SDave Chinner xfs_btree_set_numrecs(ablock, cnt); 81730f712c9SDave Chinner 81830f712c9SDave Chinner /* 81930f712c9SDave Chinner * Fill in the root key and pointer. 82030f712c9SDave Chinner */ 82130f712c9SDave Chinner kp = XFS_BMBT_KEY_ADDR(mp, block, 1); 82230f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 82330f712c9SDave Chinner kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp)); 82430f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur, 82530f712c9SDave Chinner be16_to_cpu(block->bb_level))); 82630f712c9SDave Chinner *pp = cpu_to_be64(args.fsbno); 82730f712c9SDave Chinner 82830f712c9SDave Chinner /* 82930f712c9SDave Chinner * Do all this logging at the end so that 83030f712c9SDave Chinner * the root is at the right level. 83130f712c9SDave Chinner */ 83230f712c9SDave Chinner xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS); 83330f712c9SDave Chinner xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs)); 83430f712c9SDave Chinner ASSERT(*curp == NULL); 83530f712c9SDave Chinner *curp = cur; 83630f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork); 83730f712c9SDave Chinner return 0; 83830f712c9SDave Chinner } 83930f712c9SDave Chinner 84030f712c9SDave Chinner /* 84130f712c9SDave Chinner * Convert a local file to an extents file. 84230f712c9SDave Chinner * This code is out of bounds for data forks of regular files, 84330f712c9SDave Chinner * since the file data needs to get logged so things will stay consistent. 84430f712c9SDave Chinner * (The bmap-level manipulations are ok, though). 84530f712c9SDave Chinner */ 84630f712c9SDave Chinner void 84730f712c9SDave Chinner xfs_bmap_local_to_extents_empty( 84830f712c9SDave Chinner struct xfs_inode *ip, 84930f712c9SDave Chinner int whichfork) 85030f712c9SDave Chinner { 85130f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 85230f712c9SDave Chinner 85360b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 85430f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 85530f712c9SDave Chinner ASSERT(ifp->if_bytes == 0); 85630f712c9SDave Chinner ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0); 85730f712c9SDave Chinner 85830f712c9SDave Chinner xfs_bmap_forkoff_reset(ip, whichfork); 85930f712c9SDave Chinner ifp->if_flags &= ~XFS_IFINLINE; 86030f712c9SDave Chinner ifp->if_flags |= XFS_IFEXTENTS; 86130f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 86230f712c9SDave Chinner } 86330f712c9SDave Chinner 86430f712c9SDave Chinner 86530f712c9SDave Chinner STATIC int /* error */ 86630f712c9SDave Chinner xfs_bmap_local_to_extents( 86730f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 86830f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 86930f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated in xaction */ 87030f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed by transaction */ 87130f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 87230f712c9SDave Chinner int whichfork, 87330f712c9SDave Chinner void (*init_fn)(struct xfs_trans *tp, 87430f712c9SDave Chinner struct xfs_buf *bp, 87530f712c9SDave Chinner struct xfs_inode *ip, 87630f712c9SDave Chinner struct xfs_ifork *ifp)) 87730f712c9SDave Chinner { 87830f712c9SDave Chinner int error = 0; 87930f712c9SDave Chinner int flags; /* logging flags returned */ 88030f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 88130f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 88230f712c9SDave Chinner xfs_buf_t *bp; /* buffer for extent block */ 88330f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent record pointer */ 88430f712c9SDave Chinner 88530f712c9SDave Chinner /* 88630f712c9SDave Chinner * We don't want to deal with the case of keeping inode data inline yet. 88730f712c9SDave Chinner * So sending the data fork of a regular inode is invalid. 88830f712c9SDave Chinner */ 889c19b3b05SDave Chinner ASSERT(!(S_ISREG(VFS_I(ip)->i_mode) && whichfork == XFS_DATA_FORK)); 89030f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 89130f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 89230f712c9SDave Chinner 89330f712c9SDave Chinner if (!ifp->if_bytes) { 89430f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 89530f712c9SDave Chinner flags = XFS_ILOG_CORE; 89630f712c9SDave Chinner goto done; 89730f712c9SDave Chinner } 89830f712c9SDave Chinner 89930f712c9SDave Chinner flags = 0; 90030f712c9SDave Chinner error = 0; 90130f712c9SDave Chinner ASSERT((ifp->if_flags & (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == 90230f712c9SDave Chinner XFS_IFINLINE); 90330f712c9SDave Chinner memset(&args, 0, sizeof(args)); 90430f712c9SDave Chinner args.tp = tp; 90530f712c9SDave Chinner args.mp = ip->i_mount; 906340785ccSDarrick J. Wong xfs_rmap_ino_owner(&args.oinfo, ip->i_ino, whichfork, 0); 90730f712c9SDave Chinner args.firstblock = *firstblock; 90830f712c9SDave Chinner /* 90930f712c9SDave Chinner * Allocate a block. We know we need only one, since the 91030f712c9SDave Chinner * file currently fits in an inode. 91130f712c9SDave Chinner */ 91230f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 91330f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino); 91430f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 91530f712c9SDave Chinner } else { 91630f712c9SDave Chinner args.fsbno = *firstblock; 91730f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 91830f712c9SDave Chinner } 91930f712c9SDave Chinner args.total = total; 92030f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 92130f712c9SDave Chinner error = xfs_alloc_vextent(&args); 92230f712c9SDave Chinner if (error) 92330f712c9SDave Chinner goto done; 92430f712c9SDave Chinner 92530f712c9SDave Chinner /* Can't fail, the space was reserved. */ 92630f712c9SDave Chinner ASSERT(args.fsbno != NULLFSBLOCK); 92730f712c9SDave Chinner ASSERT(args.len == 1); 92830f712c9SDave Chinner *firstblock = args.fsbno; 92930f712c9SDave Chinner bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); 93030f712c9SDave Chinner 931fe22d552SDave Chinner /* 932b7cdc66bSBrian Foster * Initialize the block, copy the data and log the remote buffer. 933fe22d552SDave Chinner * 934b7cdc66bSBrian Foster * The callout is responsible for logging because the remote format 935b7cdc66bSBrian Foster * might differ from the local format and thus we don't know how much to 936b7cdc66bSBrian Foster * log here. Note that init_fn must also set the buffer log item type 937b7cdc66bSBrian Foster * correctly. 938fe22d552SDave Chinner */ 93930f712c9SDave Chinner init_fn(tp, bp, ip, ifp); 94030f712c9SDave Chinner 941b7cdc66bSBrian Foster /* account for the change in fork size */ 94230f712c9SDave Chinner xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); 94330f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 94430f712c9SDave Chinner flags |= XFS_ILOG_CORE; 94530f712c9SDave Chinner 94630f712c9SDave Chinner xfs_iext_add(ifp, 0, 1); 94730f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, 0); 94830f712c9SDave Chinner xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM); 94930f712c9SDave Chinner trace_xfs_bmap_post_update(ip, 0, 95030f712c9SDave Chinner whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0, 95130f712c9SDave Chinner _THIS_IP_); 95230f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 1); 95330f712c9SDave Chinner ip->i_d.di_nblocks = 1; 95430f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, 95530f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 1L); 95630f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 95730f712c9SDave Chinner 95830f712c9SDave Chinner done: 95930f712c9SDave Chinner *logflagsp = flags; 96030f712c9SDave Chinner return error; 96130f712c9SDave Chinner } 96230f712c9SDave Chinner 96330f712c9SDave Chinner /* 96430f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle btree format files. 96530f712c9SDave Chinner */ 96630f712c9SDave Chinner STATIC int /* error */ 96730f712c9SDave Chinner xfs_bmap_add_attrfork_btree( 96830f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 96930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 97030f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 9712c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 97230f712c9SDave Chinner int *flags) /* inode logging flags */ 97330f712c9SDave Chinner { 97430f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 97530f712c9SDave Chinner int error; /* error return value */ 97630f712c9SDave Chinner xfs_mount_t *mp; /* file system mount struct */ 97730f712c9SDave Chinner int stat; /* newroot status */ 97830f712c9SDave Chinner 97930f712c9SDave Chinner mp = ip->i_mount; 98030f712c9SDave Chinner if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip)) 98130f712c9SDave Chinner *flags |= XFS_ILOG_DBROOT; 98230f712c9SDave Chinner else { 98330f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); 9842c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 98530f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 98630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat))) 98730f712c9SDave Chinner goto error0; 98830f712c9SDave Chinner /* must be at least one entry */ 989c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, stat == 1, error0); 99030f712c9SDave Chinner if ((error = xfs_btree_new_iroot(cur, flags, &stat))) 99130f712c9SDave Chinner goto error0; 99230f712c9SDave Chinner if (stat == 0) { 99330f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 9942451337dSDave Chinner return -ENOSPC; 99530f712c9SDave Chinner } 99630f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock; 99730f712c9SDave Chinner cur->bc_private.b.allocated = 0; 99830f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 99930f712c9SDave Chinner } 100030f712c9SDave Chinner return 0; 100130f712c9SDave Chinner error0: 100230f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 100330f712c9SDave Chinner return error; 100430f712c9SDave Chinner } 100530f712c9SDave Chinner 100630f712c9SDave Chinner /* 100730f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle extents format files. 100830f712c9SDave Chinner */ 100930f712c9SDave Chinner STATIC int /* error */ 101030f712c9SDave Chinner xfs_bmap_add_attrfork_extents( 101130f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 101230f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 101330f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 10142c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 101530f712c9SDave Chinner int *flags) /* inode logging flags */ 101630f712c9SDave Chinner { 101730f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 101830f712c9SDave Chinner int error; /* error return value */ 101930f712c9SDave Chinner 102030f712c9SDave Chinner if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip)) 102130f712c9SDave Chinner return 0; 102230f712c9SDave Chinner cur = NULL; 10232c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstblock, dfops, &cur, 0, 102430f712c9SDave Chinner flags, XFS_DATA_FORK); 102530f712c9SDave Chinner if (cur) { 102630f712c9SDave Chinner cur->bc_private.b.allocated = 0; 102730f712c9SDave Chinner xfs_btree_del_cursor(cur, 102830f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 102930f712c9SDave Chinner } 103030f712c9SDave Chinner return error; 103130f712c9SDave Chinner } 103230f712c9SDave Chinner 103330f712c9SDave Chinner /* 103430f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle local format files. Each 103530f712c9SDave Chinner * different data fork content type needs a different callout to do the 103630f712c9SDave Chinner * conversion. Some are basic and only require special block initialisation 103730f712c9SDave Chinner * callouts for the data formating, others (directories) are so specialised they 103830f712c9SDave Chinner * handle everything themselves. 103930f712c9SDave Chinner * 104030f712c9SDave Chinner * XXX (dgc): investigate whether directory conversion can use the generic 104130f712c9SDave Chinner * formatting callout. It should be possible - it's just a very complex 104230f712c9SDave Chinner * formatter. 104330f712c9SDave Chinner */ 104430f712c9SDave Chinner STATIC int /* error */ 104530f712c9SDave Chinner xfs_bmap_add_attrfork_local( 104630f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 104730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 104830f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 10492c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 105030f712c9SDave Chinner int *flags) /* inode logging flags */ 105130f712c9SDave Chinner { 105230f712c9SDave Chinner xfs_da_args_t dargs; /* args for dir/attr code */ 105330f712c9SDave Chinner 105430f712c9SDave Chinner if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) 105530f712c9SDave Chinner return 0; 105630f712c9SDave Chinner 1057c19b3b05SDave Chinner if (S_ISDIR(VFS_I(ip)->i_mode)) { 105830f712c9SDave Chinner memset(&dargs, 0, sizeof(dargs)); 105930f712c9SDave Chinner dargs.geo = ip->i_mount->m_dir_geo; 106030f712c9SDave Chinner dargs.dp = ip; 106130f712c9SDave Chinner dargs.firstblock = firstblock; 10622c3234d1SDarrick J. Wong dargs.dfops = dfops; 106330f712c9SDave Chinner dargs.total = dargs.geo->fsbcount; 106430f712c9SDave Chinner dargs.whichfork = XFS_DATA_FORK; 106530f712c9SDave Chinner dargs.trans = tp; 106630f712c9SDave Chinner return xfs_dir2_sf_to_block(&dargs); 106730f712c9SDave Chinner } 106830f712c9SDave Chinner 1069c19b3b05SDave Chinner if (S_ISLNK(VFS_I(ip)->i_mode)) 107030f712c9SDave Chinner return xfs_bmap_local_to_extents(tp, ip, firstblock, 1, 107130f712c9SDave Chinner flags, XFS_DATA_FORK, 107230f712c9SDave Chinner xfs_symlink_local_to_remote); 107330f712c9SDave Chinner 107430f712c9SDave Chinner /* should only be called for types that support local format data */ 107530f712c9SDave Chinner ASSERT(0); 10762451337dSDave Chinner return -EFSCORRUPTED; 107730f712c9SDave Chinner } 107830f712c9SDave Chinner 107930f712c9SDave Chinner /* 108030f712c9SDave Chinner * Convert inode from non-attributed to attributed. 108130f712c9SDave Chinner * Must not be in a transaction, ip must not be locked. 108230f712c9SDave Chinner */ 108330f712c9SDave Chinner int /* error code */ 108430f712c9SDave Chinner xfs_bmap_add_attrfork( 108530f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 108630f712c9SDave Chinner int size, /* space new attribute needs */ 108730f712c9SDave Chinner int rsvd) /* xact may use reserved blks */ 108830f712c9SDave Chinner { 108930f712c9SDave Chinner xfs_fsblock_t firstblock; /* 1st block/ag allocated */ 10902c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; /* freed extent records */ 109130f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 109230f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */ 109330f712c9SDave Chinner int blks; /* space reservation */ 109430f712c9SDave Chinner int version = 1; /* superblock attr version */ 109530f712c9SDave Chinner int logflags; /* logging flags */ 109630f712c9SDave Chinner int error; /* error return value */ 109730f712c9SDave Chinner 109830f712c9SDave Chinner ASSERT(XFS_IFORK_Q(ip) == 0); 109930f712c9SDave Chinner 110030f712c9SDave Chinner mp = ip->i_mount; 110130f712c9SDave Chinner ASSERT(!XFS_NOT_DQATTACHED(mp, ip)); 1102253f4911SChristoph Hellwig 110330f712c9SDave Chinner blks = XFS_ADDAFORK_SPACE_RES(mp); 1104253f4911SChristoph Hellwig 1105253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_addafork, blks, 0, 1106253f4911SChristoph Hellwig rsvd ? XFS_TRANS_RESERVE : 0, &tp); 1107253f4911SChristoph Hellwig if (error) 110830f712c9SDave Chinner return error; 1109253f4911SChristoph Hellwig 111030f712c9SDave Chinner xfs_ilock(ip, XFS_ILOCK_EXCL); 111130f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ? 111230f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES : 111330f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS); 111430f712c9SDave Chinner if (error) 111530f712c9SDave Chinner goto trans_cancel; 111630f712c9SDave Chinner if (XFS_IFORK_Q(ip)) 111730f712c9SDave Chinner goto trans_cancel; 11180f352f8eSDarrick J. Wong if (ip->i_d.di_anextents != 0) { 11190f352f8eSDarrick J. Wong error = -EFSCORRUPTED; 11200f352f8eSDarrick J. Wong goto trans_cancel; 11210f352f8eSDarrick J. Wong } 112230f712c9SDave Chinner if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) { 112330f712c9SDave Chinner /* 112430f712c9SDave Chinner * For inodes coming from pre-6.2 filesystems. 112530f712c9SDave Chinner */ 112630f712c9SDave Chinner ASSERT(ip->i_d.di_aformat == 0); 112730f712c9SDave Chinner ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS; 112830f712c9SDave Chinner } 112930f712c9SDave Chinner 113030f712c9SDave Chinner xfs_trans_ijoin(tp, ip, 0); 113130f712c9SDave Chinner xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 113230f712c9SDave Chinner 113330f712c9SDave Chinner switch (ip->i_d.di_format) { 113430f712c9SDave Chinner case XFS_DINODE_FMT_DEV: 113530f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3; 113630f712c9SDave Chinner break; 113730f712c9SDave Chinner case XFS_DINODE_FMT_UUID: 113830f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3; 113930f712c9SDave Chinner break; 114030f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 114130f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 114230f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 114330f712c9SDave Chinner ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size); 114430f712c9SDave Chinner if (!ip->i_d.di_forkoff) 114530f712c9SDave Chinner ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3; 114630f712c9SDave Chinner else if (mp->m_flags & XFS_MOUNT_ATTR2) 114730f712c9SDave Chinner version = 2; 114830f712c9SDave Chinner break; 114930f712c9SDave Chinner default: 115030f712c9SDave Chinner ASSERT(0); 11512451337dSDave Chinner error = -EINVAL; 115230f712c9SDave Chinner goto trans_cancel; 115330f712c9SDave Chinner } 115430f712c9SDave Chinner 115530f712c9SDave Chinner ASSERT(ip->i_afp == NULL); 115630f712c9SDave Chinner ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP); 115730f712c9SDave Chinner ip->i_afp->if_flags = XFS_IFEXTENTS; 115830f712c9SDave Chinner logflags = 0; 11592c3234d1SDarrick J. Wong xfs_defer_init(&dfops, &firstblock); 116030f712c9SDave Chinner switch (ip->i_d.di_format) { 116130f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 11622c3234d1SDarrick J. Wong error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &dfops, 116330f712c9SDave Chinner &logflags); 116430f712c9SDave Chinner break; 116530f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 116630f712c9SDave Chinner error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock, 11672c3234d1SDarrick J. Wong &dfops, &logflags); 116830f712c9SDave Chinner break; 116930f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 11702c3234d1SDarrick J. Wong error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &dfops, 117130f712c9SDave Chinner &logflags); 117230f712c9SDave Chinner break; 117330f712c9SDave Chinner default: 117430f712c9SDave Chinner error = 0; 117530f712c9SDave Chinner break; 117630f712c9SDave Chinner } 117730f712c9SDave Chinner if (logflags) 117830f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 117930f712c9SDave Chinner if (error) 118030f712c9SDave Chinner goto bmap_cancel; 118130f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb) || 118230f712c9SDave Chinner (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) { 118361e63ecbSDave Chinner bool log_sb = false; 118430f712c9SDave Chinner 118530f712c9SDave Chinner spin_lock(&mp->m_sb_lock); 118630f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb)) { 118730f712c9SDave Chinner xfs_sb_version_addattr(&mp->m_sb); 118861e63ecbSDave Chinner log_sb = true; 118930f712c9SDave Chinner } 119030f712c9SDave Chinner if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) { 119130f712c9SDave Chinner xfs_sb_version_addattr2(&mp->m_sb); 119261e63ecbSDave Chinner log_sb = true; 119330f712c9SDave Chinner } 119430f712c9SDave Chinner spin_unlock(&mp->m_sb_lock); 119561e63ecbSDave Chinner if (log_sb) 119661e63ecbSDave Chinner xfs_log_sb(tp); 119730f712c9SDave Chinner } 119830f712c9SDave Chinner 11992c3234d1SDarrick J. Wong error = xfs_defer_finish(&tp, &dfops, NULL); 120030f712c9SDave Chinner if (error) 120130f712c9SDave Chinner goto bmap_cancel; 120270393313SChristoph Hellwig error = xfs_trans_commit(tp); 120330f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 120430f712c9SDave Chinner return error; 120530f712c9SDave Chinner 120630f712c9SDave Chinner bmap_cancel: 12072c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 120830f712c9SDave Chinner trans_cancel: 12094906e215SChristoph Hellwig xfs_trans_cancel(tp); 121030f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 121130f712c9SDave Chinner return error; 121230f712c9SDave Chinner } 121330f712c9SDave Chinner 121430f712c9SDave Chinner /* 121530f712c9SDave Chinner * Internal and external extent tree search functions. 121630f712c9SDave Chinner */ 121730f712c9SDave Chinner 121830f712c9SDave Chinner /* 121930f712c9SDave Chinner * Read in the extents to if_extents. 122030f712c9SDave Chinner * All inode fields are set up by caller, we just traverse the btree 122130f712c9SDave Chinner * and copy the records in. If the file system cannot contain unwritten 122230f712c9SDave Chinner * extents, the records are checked for no "state" flags. 122330f712c9SDave Chinner */ 122430f712c9SDave Chinner int /* error */ 122530f712c9SDave Chinner xfs_bmap_read_extents( 122630f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 122730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 122830f712c9SDave Chinner int whichfork) /* data or attr fork */ 122930f712c9SDave Chinner { 123030f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 123130f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 123230f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 123330f712c9SDave Chinner int error; /* error return value */ 123430f712c9SDave Chinner xfs_extnum_t i, j; /* index into the extents list */ 123530f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 123630f712c9SDave Chinner int level; /* btree level, for checking */ 123730f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 123830f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 123930f712c9SDave Chinner /* REFERENCED */ 124030f712c9SDave Chinner xfs_extnum_t room; /* number of entries there's room for */ 124130f712c9SDave Chinner 124230f712c9SDave Chinner mp = ip->i_mount; 124330f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 124430f712c9SDave Chinner block = ifp->if_broot; 124530f712c9SDave Chinner /* 124630f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 124730f712c9SDave Chinner */ 124830f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 124930f712c9SDave Chinner ASSERT(level > 0); 125030f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 125130f712c9SDave Chinner bno = be64_to_cpu(*pp); 1252d5a91baeSDarrick J. Wong 125330f712c9SDave Chinner /* 125430f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 125530f712c9SDave Chinner * pointer (leftmost) at each level. 125630f712c9SDave Chinner */ 125730f712c9SDave Chinner while (level-- > 0) { 125830f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 125930f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 126030f712c9SDave Chinner if (error) 126130f712c9SDave Chinner return error; 126230f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 126330f712c9SDave Chinner if (level == 0) 126430f712c9SDave Chinner break; 126530f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 126630f712c9SDave Chinner bno = be64_to_cpu(*pp); 1267c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 1268c29aad41SEric Sandeen XFS_FSB_SANITY_CHECK(mp, bno), error0); 126930f712c9SDave Chinner xfs_trans_brelse(tp, bp); 127030f712c9SDave Chinner } 127130f712c9SDave Chinner /* 127230f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 127330f712c9SDave Chinner */ 12745d829300SEric Sandeen room = xfs_iext_count(ifp); 127530f712c9SDave Chinner i = 0; 127630f712c9SDave Chinner /* 127730f712c9SDave Chinner * Loop over all leaf nodes. Copy information to the extent records. 127830f712c9SDave Chinner */ 127930f712c9SDave Chinner for (;;) { 128030f712c9SDave Chinner xfs_bmbt_rec_t *frp; 128130f712c9SDave Chinner xfs_fsblock_t nextbno; 128230f712c9SDave Chinner xfs_extnum_t num_recs; 128330f712c9SDave Chinner xfs_extnum_t start; 128430f712c9SDave Chinner 128530f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 128630f712c9SDave Chinner if (unlikely(i + num_recs > room)) { 128730f712c9SDave Chinner ASSERT(i + num_recs <= room); 128830f712c9SDave Chinner xfs_warn(ip->i_mount, 128930f712c9SDave Chinner "corrupt dinode %Lu, (btree extents).", 129030f712c9SDave Chinner (unsigned long long) ip->i_ino); 129130f712c9SDave Chinner XFS_CORRUPTION_ERROR("xfs_bmap_read_extents(1)", 129230f712c9SDave Chinner XFS_ERRLEVEL_LOW, ip->i_mount, block); 129330f712c9SDave Chinner goto error0; 129430f712c9SDave Chinner } 129530f712c9SDave Chinner /* 129630f712c9SDave Chinner * Read-ahead the next leaf block, if any. 129730f712c9SDave Chinner */ 129830f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 129930f712c9SDave Chinner if (nextbno != NULLFSBLOCK) 130030f712c9SDave Chinner xfs_btree_reada_bufl(mp, nextbno, 1, 130130f712c9SDave Chinner &xfs_bmbt_buf_ops); 130230f712c9SDave Chinner /* 130330f712c9SDave Chinner * Copy records into the extent records. 130430f712c9SDave Chinner */ 130530f712c9SDave Chinner frp = XFS_BMBT_REC_ADDR(mp, block, 1); 130630f712c9SDave Chinner start = i; 130730f712c9SDave Chinner for (j = 0; j < num_recs; j++, i++, frp++) { 130830f712c9SDave Chinner xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i); 130930f712c9SDave Chinner trp->l0 = be64_to_cpu(frp->l0); 131030f712c9SDave Chinner trp->l1 = be64_to_cpu(frp->l1); 13110c1d9e4aSChristoph Hellwig if (!xfs_bmbt_validate_extent(mp, whichfork, trp)) { 131230f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmap_read_extents(2)", 13130c1d9e4aSChristoph Hellwig XFS_ERRLEVEL_LOW, mp); 131430f712c9SDave Chinner goto error0; 131530f712c9SDave Chinner } 131630f712c9SDave Chinner } 131730f712c9SDave Chinner xfs_trans_brelse(tp, bp); 131830f712c9SDave Chinner bno = nextbno; 131930f712c9SDave Chinner /* 132030f712c9SDave Chinner * If we've reached the end, stop. 132130f712c9SDave Chinner */ 132230f712c9SDave Chinner if (bno == NULLFSBLOCK) 132330f712c9SDave Chinner break; 132430f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 132530f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 132630f712c9SDave Chinner if (error) 132730f712c9SDave Chinner return error; 132830f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 132930f712c9SDave Chinner } 1330356a3225SDarrick J. Wong if (i != XFS_IFORK_NEXTENTS(ip, whichfork)) 1331356a3225SDarrick J. Wong return -EFSCORRUPTED; 13325d829300SEric Sandeen ASSERT(i == xfs_iext_count(ifp)); 133330f712c9SDave Chinner XFS_BMAP_TRACE_EXLIST(ip, i, whichfork); 133430f712c9SDave Chinner return 0; 133530f712c9SDave Chinner error0: 133630f712c9SDave Chinner xfs_trans_brelse(tp, bp); 13372451337dSDave Chinner return -EFSCORRUPTED; 133830f712c9SDave Chinner } 133930f712c9SDave Chinner 134030f712c9SDave Chinner /* 134130f712c9SDave Chinner * Returns the file-relative block number of the first unused block(s) 134230f712c9SDave Chinner * in the file with at least "len" logically contiguous blocks free. 134330f712c9SDave Chinner * This is the lowest-address hole if the file has holes, else the first block 134430f712c9SDave Chinner * past the end of file. 134530f712c9SDave Chinner * Return 0 if the file is currently local (in-inode). 134630f712c9SDave Chinner */ 134730f712c9SDave Chinner int /* error */ 134830f712c9SDave Chinner xfs_bmap_first_unused( 134930f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 135030f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 135130f712c9SDave Chinner xfs_extlen_t len, /* size of hole to find */ 135230f712c9SDave Chinner xfs_fileoff_t *first_unused, /* unused block */ 135330f712c9SDave Chinner int whichfork) /* data or attr fork */ 135430f712c9SDave Chinner { 135530f712c9SDave Chinner int error; /* error return value */ 135630f712c9SDave Chinner int idx; /* extent record index */ 135730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 135830f712c9SDave Chinner xfs_fileoff_t lastaddr; /* last block number seen */ 135930f712c9SDave Chinner xfs_fileoff_t lowest; /* lowest useful block */ 136030f712c9SDave Chinner xfs_fileoff_t max; /* starting useful block */ 136130f712c9SDave Chinner xfs_fileoff_t off; /* offset for this block */ 136230f712c9SDave Chinner xfs_extnum_t nextents; /* number of extent entries */ 136330f712c9SDave Chinner 136430f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE || 136530f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS || 136630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 136730f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { 136830f712c9SDave Chinner *first_unused = 0; 136930f712c9SDave Chinner return 0; 137030f712c9SDave Chinner } 137130f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 137230f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 137330f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 137430f712c9SDave Chinner return error; 137530f712c9SDave Chinner lowest = *first_unused; 13765d829300SEric Sandeen nextents = xfs_iext_count(ifp); 137730f712c9SDave Chinner for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) { 137830f712c9SDave Chinner xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); 137930f712c9SDave Chinner off = xfs_bmbt_get_startoff(ep); 138030f712c9SDave Chinner /* 138130f712c9SDave Chinner * See if the hole before this extent will work. 138230f712c9SDave Chinner */ 138330f712c9SDave Chinner if (off >= lowest + len && off - max >= len) { 138430f712c9SDave Chinner *first_unused = max; 138530f712c9SDave Chinner return 0; 138630f712c9SDave Chinner } 138730f712c9SDave Chinner lastaddr = off + xfs_bmbt_get_blockcount(ep); 138830f712c9SDave Chinner max = XFS_FILEOFF_MAX(lastaddr, lowest); 138930f712c9SDave Chinner } 139030f712c9SDave Chinner *first_unused = max; 139130f712c9SDave Chinner return 0; 139230f712c9SDave Chinner } 139330f712c9SDave Chinner 139430f712c9SDave Chinner /* 139530f712c9SDave Chinner * Returns the file-relative block number of the last block - 1 before 139630f712c9SDave Chinner * last_block (input value) in the file. 139730f712c9SDave Chinner * This is not based on i_size, it is based on the extent records. 139830f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 139930f712c9SDave Chinner */ 140030f712c9SDave Chinner int /* error */ 140130f712c9SDave Chinner xfs_bmap_last_before( 140286685f7bSChristoph Hellwig struct xfs_trans *tp, /* transaction pointer */ 140386685f7bSChristoph Hellwig struct xfs_inode *ip, /* incore inode */ 140430f712c9SDave Chinner xfs_fileoff_t *last_block, /* last block */ 140530f712c9SDave Chinner int whichfork) /* data or attr fork */ 140630f712c9SDave Chinner { 140786685f7bSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 140886685f7bSChristoph Hellwig struct xfs_bmbt_irec got; 140986685f7bSChristoph Hellwig xfs_extnum_t idx; 141086685f7bSChristoph Hellwig int error; 141130f712c9SDave Chinner 141286685f7bSChristoph Hellwig switch (XFS_IFORK_FORMAT(ip, whichfork)) { 141386685f7bSChristoph Hellwig case XFS_DINODE_FMT_LOCAL: 141430f712c9SDave Chinner *last_block = 0; 141530f712c9SDave Chinner return 0; 141686685f7bSChristoph Hellwig case XFS_DINODE_FMT_BTREE: 141786685f7bSChristoph Hellwig case XFS_DINODE_FMT_EXTENTS: 141886685f7bSChristoph Hellwig break; 141986685f7bSChristoph Hellwig default: 142086685f7bSChristoph Hellwig return -EIO; 142130f712c9SDave Chinner } 142286685f7bSChristoph Hellwig 142386685f7bSChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 142486685f7bSChristoph Hellwig error = xfs_iread_extents(tp, ip, whichfork); 142586685f7bSChristoph Hellwig if (error) 142630f712c9SDave Chinner return error; 142730f712c9SDave Chinner } 142886685f7bSChristoph Hellwig 142986685f7bSChristoph Hellwig if (xfs_iext_lookup_extent(ip, ifp, *last_block - 1, &idx, &got)) { 143086685f7bSChristoph Hellwig if (got.br_startoff <= *last_block - 1) 143186685f7bSChristoph Hellwig return 0; 143286685f7bSChristoph Hellwig } 143386685f7bSChristoph Hellwig 143486685f7bSChristoph Hellwig if (xfs_iext_get_extent(ifp, idx - 1, &got)) { 143586685f7bSChristoph Hellwig *last_block = got.br_startoff + got.br_blockcount; 143686685f7bSChristoph Hellwig return 0; 143786685f7bSChristoph Hellwig } 143886685f7bSChristoph Hellwig 143986685f7bSChristoph Hellwig *last_block = 0; 144030f712c9SDave Chinner return 0; 144130f712c9SDave Chinner } 144230f712c9SDave Chinner 144330f712c9SDave Chinner int 144430f712c9SDave Chinner xfs_bmap_last_extent( 144530f712c9SDave Chinner struct xfs_trans *tp, 144630f712c9SDave Chinner struct xfs_inode *ip, 144730f712c9SDave Chinner int whichfork, 144830f712c9SDave Chinner struct xfs_bmbt_irec *rec, 144930f712c9SDave Chinner int *is_empty) 145030f712c9SDave Chinner { 145130f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 145230f712c9SDave Chinner int error; 145330f712c9SDave Chinner int nextents; 145430f712c9SDave Chinner 145530f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 145630f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 145730f712c9SDave Chinner if (error) 145830f712c9SDave Chinner return error; 145930f712c9SDave Chinner } 146030f712c9SDave Chinner 14615d829300SEric Sandeen nextents = xfs_iext_count(ifp); 146230f712c9SDave Chinner if (nextents == 0) { 146330f712c9SDave Chinner *is_empty = 1; 146430f712c9SDave Chinner return 0; 146530f712c9SDave Chinner } 146630f712c9SDave Chinner 146730f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, nextents - 1), rec); 146830f712c9SDave Chinner *is_empty = 0; 146930f712c9SDave Chinner return 0; 147030f712c9SDave Chinner } 147130f712c9SDave Chinner 147230f712c9SDave Chinner /* 147330f712c9SDave Chinner * Check the last inode extent to determine whether this allocation will result 147430f712c9SDave Chinner * in blocks being allocated at the end of the file. When we allocate new data 147530f712c9SDave Chinner * blocks at the end of the file which do not start at the previous data block, 147630f712c9SDave Chinner * we will try to align the new blocks at stripe unit boundaries. 147730f712c9SDave Chinner * 147830f712c9SDave Chinner * Returns 1 in bma->aeof if the file (fork) is empty as any new write will be 147930f712c9SDave Chinner * at, or past the EOF. 148030f712c9SDave Chinner */ 148130f712c9SDave Chinner STATIC int 148230f712c9SDave Chinner xfs_bmap_isaeof( 148330f712c9SDave Chinner struct xfs_bmalloca *bma, 148430f712c9SDave Chinner int whichfork) 148530f712c9SDave Chinner { 148630f712c9SDave Chinner struct xfs_bmbt_irec rec; 148730f712c9SDave Chinner int is_empty; 148830f712c9SDave Chinner int error; 148930f712c9SDave Chinner 149030f712c9SDave Chinner bma->aeof = 0; 149130f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, bma->ip, whichfork, &rec, 149230f712c9SDave Chinner &is_empty); 149330f712c9SDave Chinner if (error) 149430f712c9SDave Chinner return error; 149530f712c9SDave Chinner 149630f712c9SDave Chinner if (is_empty) { 149730f712c9SDave Chinner bma->aeof = 1; 149830f712c9SDave Chinner return 0; 149930f712c9SDave Chinner } 150030f712c9SDave Chinner 150130f712c9SDave Chinner /* 150230f712c9SDave Chinner * Check if we are allocation or past the last extent, or at least into 150330f712c9SDave Chinner * the last delayed allocated extent. 150430f712c9SDave Chinner */ 150530f712c9SDave Chinner bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount || 150630f712c9SDave Chinner (bma->offset >= rec.br_startoff && 150730f712c9SDave Chinner isnullstartblock(rec.br_startblock)); 150830f712c9SDave Chinner return 0; 150930f712c9SDave Chinner } 151030f712c9SDave Chinner 151130f712c9SDave Chinner /* 151230f712c9SDave Chinner * Returns the file-relative block number of the first block past eof in 151330f712c9SDave Chinner * the file. This is not based on i_size, it is based on the extent records. 151430f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 151530f712c9SDave Chinner */ 151630f712c9SDave Chinner int 151730f712c9SDave Chinner xfs_bmap_last_offset( 151830f712c9SDave Chinner struct xfs_inode *ip, 151930f712c9SDave Chinner xfs_fileoff_t *last_block, 152030f712c9SDave Chinner int whichfork) 152130f712c9SDave Chinner { 152230f712c9SDave Chinner struct xfs_bmbt_irec rec; 152330f712c9SDave Chinner int is_empty; 152430f712c9SDave Chinner int error; 152530f712c9SDave Chinner 152630f712c9SDave Chinner *last_block = 0; 152730f712c9SDave Chinner 152830f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) 152930f712c9SDave Chinner return 0; 153030f712c9SDave Chinner 153130f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && 153230f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 15332451337dSDave Chinner return -EIO; 153430f712c9SDave Chinner 153530f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, &is_empty); 153630f712c9SDave Chinner if (error || is_empty) 153730f712c9SDave Chinner return error; 153830f712c9SDave Chinner 153930f712c9SDave Chinner *last_block = rec.br_startoff + rec.br_blockcount; 154030f712c9SDave Chinner return 0; 154130f712c9SDave Chinner } 154230f712c9SDave Chinner 154330f712c9SDave Chinner /* 154430f712c9SDave Chinner * Returns whether the selected fork of the inode has exactly one 154530f712c9SDave Chinner * block or not. For the data fork we check this matches di_size, 154630f712c9SDave Chinner * implying the file's range is 0..bsize-1. 154730f712c9SDave Chinner */ 154830f712c9SDave Chinner int /* 1=>1 block, 0=>otherwise */ 154930f712c9SDave Chinner xfs_bmap_one_block( 155030f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 155130f712c9SDave Chinner int whichfork) /* data or attr fork */ 155230f712c9SDave Chinner { 155330f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* ptr to fork's extent */ 155430f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 155530f712c9SDave Chinner int rval; /* return value */ 155630f712c9SDave Chinner xfs_bmbt_irec_t s; /* internal version of extent */ 155730f712c9SDave Chinner 155830f712c9SDave Chinner #ifndef DEBUG 155930f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) 156030f712c9SDave Chinner return XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize; 156130f712c9SDave Chinner #endif /* !DEBUG */ 156230f712c9SDave Chinner if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1) 156330f712c9SDave Chinner return 0; 156430f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 156530f712c9SDave Chinner return 0; 156630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 156730f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 156830f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, 0); 156930f712c9SDave Chinner xfs_bmbt_get_all(ep, &s); 157030f712c9SDave Chinner rval = s.br_startoff == 0 && s.br_blockcount == 1; 157130f712c9SDave Chinner if (rval && whichfork == XFS_DATA_FORK) 157230f712c9SDave Chinner ASSERT(XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize); 157330f712c9SDave Chinner return rval; 157430f712c9SDave Chinner } 157530f712c9SDave Chinner 157630f712c9SDave Chinner /* 157730f712c9SDave Chinner * Extent tree manipulation functions used during allocation. 157830f712c9SDave Chinner */ 157930f712c9SDave Chinner 158030f712c9SDave Chinner /* 158130f712c9SDave Chinner * Convert a delayed allocation to a real allocation. 158230f712c9SDave Chinner */ 158330f712c9SDave Chinner STATIC int /* error */ 158430f712c9SDave Chinner xfs_bmap_add_extent_delay_real( 158560b4984fSDarrick J. Wong struct xfs_bmalloca *bma, 158660b4984fSDarrick J. Wong int whichfork) 158730f712c9SDave Chinner { 158830f712c9SDave Chinner struct xfs_bmbt_irec *new = &bma->got; 158930f712c9SDave Chinner int diff; /* temp value */ 159030f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ 159130f712c9SDave Chinner int error; /* error return value */ 159230f712c9SDave Chinner int i; /* temp state */ 159330f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 159430f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 159530f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 159630f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 159730f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 159830f712c9SDave Chinner int state = 0;/* state bits, accessed thru macros */ 159930f712c9SDave Chinner xfs_filblks_t da_new; /* new count del alloc blocks used */ 160030f712c9SDave Chinner xfs_filblks_t da_old; /* old count del alloc blocks used */ 160130f712c9SDave Chinner xfs_filblks_t temp=0; /* value for da_new calculations */ 160230f712c9SDave Chinner xfs_filblks_t temp2=0;/* value for da_new calculations */ 160330f712c9SDave Chinner int tmp_rval; /* partial logging flags */ 1604c29aad41SEric Sandeen struct xfs_mount *mp; 160560b4984fSDarrick J. Wong xfs_extnum_t *nextents; 160630f712c9SDave Chinner 1607f1f96c49SEric Sandeen mp = bma->ip->i_mount; 16086d3eb1ecSDarrick J. Wong ifp = XFS_IFORK_PTR(bma->ip, whichfork); 160960b4984fSDarrick J. Wong ASSERT(whichfork != XFS_ATTR_FORK); 161060b4984fSDarrick J. Wong nextents = (whichfork == XFS_COW_FORK ? &bma->ip->i_cnextents : 161160b4984fSDarrick J. Wong &bma->ip->i_d.di_nextents); 161230f712c9SDave Chinner 161330f712c9SDave Chinner ASSERT(bma->idx >= 0); 16145d829300SEric Sandeen ASSERT(bma->idx <= xfs_iext_count(ifp)); 161530f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 161630f712c9SDave Chinner ASSERT(!bma->cur || 161730f712c9SDave Chinner (bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 161830f712c9SDave Chinner 1619ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 162030f712c9SDave Chinner 162130f712c9SDave Chinner #define LEFT r[0] 162230f712c9SDave Chinner #define RIGHT r[1] 162330f712c9SDave Chinner #define PREV r[2] 162430f712c9SDave Chinner 162560b4984fSDarrick J. Wong if (whichfork == XFS_COW_FORK) 162660b4984fSDarrick J. Wong state |= BMAP_COWFORK; 162760b4984fSDarrick J. Wong 162830f712c9SDave Chinner /* 162930f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 163030f712c9SDave Chinner */ 163130f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 163230f712c9SDave Chinner xfs_bmbt_get_all(ep, &PREV); 163330f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 163430f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 163530f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 163630f712c9SDave Chinner 163730f712c9SDave Chinner da_old = startblockval(PREV.br_startblock); 163830f712c9SDave Chinner da_new = 0; 163930f712c9SDave Chinner 164030f712c9SDave Chinner /* 164130f712c9SDave Chinner * Set flags determining what part of the previous delayed allocation 164230f712c9SDave Chinner * extent is being replaced by a real allocation. 164330f712c9SDave Chinner */ 164430f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 164530f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 164630f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 164730f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 164830f712c9SDave Chinner 164930f712c9SDave Chinner /* 165030f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 165130f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 165230f712c9SDave Chinner */ 165330f712c9SDave Chinner if (bma->idx > 0) { 165430f712c9SDave Chinner state |= BMAP_LEFT_VALID; 165530f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &LEFT); 165630f712c9SDave Chinner 165730f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 165830f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 165930f712c9SDave Chinner } 166030f712c9SDave Chinner 166130f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 166230f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 166330f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 166430f712c9SDave Chinner LEFT.br_state == new->br_state && 166530f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 166630f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 166730f712c9SDave Chinner 166830f712c9SDave Chinner /* 166930f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 167030f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 167130f712c9SDave Chinner * Also check for all-three-contiguous being too large. 167230f712c9SDave Chinner */ 16735d829300SEric Sandeen if (bma->idx < xfs_iext_count(ifp) - 1) { 167430f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 167530f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx + 1), &RIGHT); 167630f712c9SDave Chinner 167730f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 167830f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 167930f712c9SDave Chinner } 168030f712c9SDave Chinner 168130f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 168230f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 168330f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 168430f712c9SDave Chinner new->br_state == RIGHT.br_state && 168530f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 168630f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 168730f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 168830f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 168930f712c9SDave Chinner BMAP_RIGHT_FILLING) || 169030f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 169130f712c9SDave Chinner <= MAXEXTLEN)) 169230f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 169330f712c9SDave Chinner 169430f712c9SDave Chinner error = 0; 169530f712c9SDave Chinner /* 169630f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 169730f712c9SDave Chinner */ 169830f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 169930f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 170030f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 170130f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 170230f712c9SDave Chinner /* 170330f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 170430f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 170530f712c9SDave Chinner */ 170630f712c9SDave Chinner bma->idx--; 170730f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 170830f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 170930f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 171030f712c9SDave Chinner RIGHT.br_blockcount); 171130f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 171230f712c9SDave Chinner 171330f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 2, state); 171460b4984fSDarrick J. Wong (*nextents)--; 171530f712c9SDave Chinner if (bma->cur == NULL) 171630f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 171730f712c9SDave Chinner else { 171830f712c9SDave Chinner rval = XFS_ILOG_CORE; 171930f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 172030f712c9SDave Chinner RIGHT.br_startblock, 172130f712c9SDave Chinner RIGHT.br_blockcount, &i); 172230f712c9SDave Chinner if (error) 172330f712c9SDave Chinner goto done; 1724c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 172530f712c9SDave Chinner error = xfs_btree_delete(bma->cur, &i); 172630f712c9SDave Chinner if (error) 172730f712c9SDave Chinner goto done; 1728c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 172930f712c9SDave Chinner error = xfs_btree_decrement(bma->cur, 0, &i); 173030f712c9SDave Chinner if (error) 173130f712c9SDave Chinner goto done; 1732c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 173330f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 173430f712c9SDave Chinner LEFT.br_startblock, 173530f712c9SDave Chinner LEFT.br_blockcount + 173630f712c9SDave Chinner PREV.br_blockcount + 173730f712c9SDave Chinner RIGHT.br_blockcount, LEFT.br_state); 173830f712c9SDave Chinner if (error) 173930f712c9SDave Chinner goto done; 174030f712c9SDave Chinner } 174130f712c9SDave Chinner break; 174230f712c9SDave Chinner 174330f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 174430f712c9SDave Chinner /* 174530f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 174630f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 174730f712c9SDave Chinner */ 174830f712c9SDave Chinner bma->idx--; 174930f712c9SDave Chinner 175030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 175130f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 175230f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount); 175330f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 175430f712c9SDave Chinner 175530f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 175630f712c9SDave Chinner if (bma->cur == NULL) 175730f712c9SDave Chinner rval = XFS_ILOG_DEXT; 175830f712c9SDave Chinner else { 175930f712c9SDave Chinner rval = 0; 176030f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff, 176130f712c9SDave Chinner LEFT.br_startblock, LEFT.br_blockcount, 176230f712c9SDave Chinner &i); 176330f712c9SDave Chinner if (error) 176430f712c9SDave Chinner goto done; 1765c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 176630f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 176730f712c9SDave Chinner LEFT.br_startblock, 176830f712c9SDave Chinner LEFT.br_blockcount + 176930f712c9SDave Chinner PREV.br_blockcount, LEFT.br_state); 177030f712c9SDave Chinner if (error) 177130f712c9SDave Chinner goto done; 177230f712c9SDave Chinner } 177330f712c9SDave Chinner break; 177430f712c9SDave Chinner 177530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 177630f712c9SDave Chinner /* 177730f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 177830f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 177930f712c9SDave Chinner */ 178030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 178130f712c9SDave Chinner xfs_bmbt_set_startblock(ep, new->br_startblock); 178230f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 178330f712c9SDave Chinner PREV.br_blockcount + RIGHT.br_blockcount); 178430f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 178530f712c9SDave Chinner 178630f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 178730f712c9SDave Chinner if (bma->cur == NULL) 178830f712c9SDave Chinner rval = XFS_ILOG_DEXT; 178930f712c9SDave Chinner else { 179030f712c9SDave Chinner rval = 0; 179130f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 179230f712c9SDave Chinner RIGHT.br_startblock, 179330f712c9SDave Chinner RIGHT.br_blockcount, &i); 179430f712c9SDave Chinner if (error) 179530f712c9SDave Chinner goto done; 1796c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 179730f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, PREV.br_startoff, 179830f712c9SDave Chinner new->br_startblock, 179930f712c9SDave Chinner PREV.br_blockcount + 180030f712c9SDave Chinner RIGHT.br_blockcount, PREV.br_state); 180130f712c9SDave Chinner if (error) 180230f712c9SDave Chinner goto done; 180330f712c9SDave Chinner } 180430f712c9SDave Chinner break; 180530f712c9SDave Chinner 180630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 180730f712c9SDave Chinner /* 180830f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 180930f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 181030f712c9SDave Chinner * the new one. 181130f712c9SDave Chinner */ 181230f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 181330f712c9SDave Chinner xfs_bmbt_set_startblock(ep, new->br_startblock); 181405a630d7SDarrick J. Wong xfs_bmbt_set_state(ep, new->br_state); 181530f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 181630f712c9SDave Chinner 181760b4984fSDarrick J. Wong (*nextents)++; 181830f712c9SDave Chinner if (bma->cur == NULL) 181930f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 182030f712c9SDave Chinner else { 182130f712c9SDave Chinner rval = XFS_ILOG_CORE; 182230f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 182330f712c9SDave Chinner new->br_startblock, new->br_blockcount, 182430f712c9SDave Chinner &i); 182530f712c9SDave Chinner if (error) 182630f712c9SDave Chinner goto done; 1827c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 182830f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 182930f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 183030f712c9SDave Chinner if (error) 183130f712c9SDave Chinner goto done; 1832c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 183330f712c9SDave Chinner } 183430f712c9SDave Chinner break; 183530f712c9SDave Chinner 183630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 183730f712c9SDave Chinner /* 183830f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 183930f712c9SDave Chinner * The left neighbor is contiguous. 184030f712c9SDave Chinner */ 184130f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx - 1, state, _THIS_IP_); 184230f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx - 1), 184330f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount); 184430f712c9SDave Chinner xfs_bmbt_set_startoff(ep, 184530f712c9SDave Chinner PREV.br_startoff + new->br_blockcount); 184630f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx - 1, state, _THIS_IP_); 184730f712c9SDave Chinner 184830f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 184930f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 185030f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 185130f712c9SDave Chinner if (bma->cur == NULL) 185230f712c9SDave Chinner rval = XFS_ILOG_DEXT; 185330f712c9SDave Chinner else { 185430f712c9SDave Chinner rval = 0; 185530f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff, 185630f712c9SDave Chinner LEFT.br_startblock, LEFT.br_blockcount, 185730f712c9SDave Chinner &i); 185830f712c9SDave Chinner if (error) 185930f712c9SDave Chinner goto done; 1860c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 186130f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 186230f712c9SDave Chinner LEFT.br_startblock, 186330f712c9SDave Chinner LEFT.br_blockcount + 186430f712c9SDave Chinner new->br_blockcount, 186530f712c9SDave Chinner LEFT.br_state); 186630f712c9SDave Chinner if (error) 186730f712c9SDave Chinner goto done; 186830f712c9SDave Chinner } 186930f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 187030f712c9SDave Chinner startblockval(PREV.br_startblock)); 187130f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 187230f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 187330f712c9SDave Chinner 187430f712c9SDave Chinner bma->idx--; 187530f712c9SDave Chinner break; 187630f712c9SDave Chinner 187730f712c9SDave Chinner case BMAP_LEFT_FILLING: 187830f712c9SDave Chinner /* 187930f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 188030f712c9SDave Chinner * The left neighbor is not contiguous. 188130f712c9SDave Chinner */ 188230f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 188330f712c9SDave Chinner xfs_bmbt_set_startoff(ep, new_endoff); 188430f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 188530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 188630f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx, 1, new, state); 188760b4984fSDarrick J. Wong (*nextents)++; 188830f712c9SDave Chinner if (bma->cur == NULL) 188930f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 189030f712c9SDave Chinner else { 189130f712c9SDave Chinner rval = XFS_ILOG_CORE; 189230f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 189330f712c9SDave Chinner new->br_startblock, new->br_blockcount, 189430f712c9SDave Chinner &i); 189530f712c9SDave Chinner if (error) 189630f712c9SDave Chinner goto done; 1897c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 189830f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 189930f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 190030f712c9SDave Chinner if (error) 190130f712c9SDave Chinner goto done; 1902c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 190330f712c9SDave Chinner } 190430f712c9SDave Chinner 19056d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 190630f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 19072c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, 19086d3eb1ecSDarrick J. Wong &bma->cur, 1, &tmp_rval, whichfork); 190930f712c9SDave Chinner rval |= tmp_rval; 191030f712c9SDave Chinner if (error) 191130f712c9SDave Chinner goto done; 191230f712c9SDave Chinner } 191330f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 191430f712c9SDave Chinner startblockval(PREV.br_startblock) - 191530f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 191630f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx + 1); 191730f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 191830f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 191930f712c9SDave Chinner break; 192030f712c9SDave Chinner 192130f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 192230f712c9SDave Chinner /* 192330f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 192430f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 192530f712c9SDave Chinner */ 192630f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 192730f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 192830f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 192930f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx + 1), 193030f712c9SDave Chinner new->br_startoff, new->br_startblock, 193130f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 193230f712c9SDave Chinner RIGHT.br_state); 193330f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 193430f712c9SDave Chinner if (bma->cur == NULL) 193530f712c9SDave Chinner rval = XFS_ILOG_DEXT; 193630f712c9SDave Chinner else { 193730f712c9SDave Chinner rval = 0; 193830f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 193930f712c9SDave Chinner RIGHT.br_startblock, 194030f712c9SDave Chinner RIGHT.br_blockcount, &i); 194130f712c9SDave Chinner if (error) 194230f712c9SDave Chinner goto done; 1943c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 194430f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, new->br_startoff, 194530f712c9SDave Chinner new->br_startblock, 194630f712c9SDave Chinner new->br_blockcount + 194730f712c9SDave Chinner RIGHT.br_blockcount, 194830f712c9SDave Chinner RIGHT.br_state); 194930f712c9SDave Chinner if (error) 195030f712c9SDave Chinner goto done; 195130f712c9SDave Chinner } 195230f712c9SDave Chinner 195330f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 195430f712c9SDave Chinner startblockval(PREV.br_startblock)); 195530f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 195630f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 195730f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 195830f712c9SDave Chinner 195930f712c9SDave Chinner bma->idx++; 196030f712c9SDave Chinner break; 196130f712c9SDave Chinner 196230f712c9SDave Chinner case BMAP_RIGHT_FILLING: 196330f712c9SDave Chinner /* 196430f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 196530f712c9SDave Chinner * The right neighbor is not contiguous. 196630f712c9SDave Chinner */ 196730f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 196830f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 196930f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 197030f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx + 1, 1, new, state); 197160b4984fSDarrick J. Wong (*nextents)++; 197230f712c9SDave Chinner if (bma->cur == NULL) 197330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 197430f712c9SDave Chinner else { 197530f712c9SDave Chinner rval = XFS_ILOG_CORE; 197630f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 197730f712c9SDave Chinner new->br_startblock, new->br_blockcount, 197830f712c9SDave Chinner &i); 197930f712c9SDave Chinner if (error) 198030f712c9SDave Chinner goto done; 1981c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 198230f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 198330f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 198430f712c9SDave Chinner if (error) 198530f712c9SDave Chinner goto done; 1986c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 198730f712c9SDave Chinner } 198830f712c9SDave Chinner 19896d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 199030f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 19912c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 1, 19926d3eb1ecSDarrick J. Wong &tmp_rval, whichfork); 199330f712c9SDave Chinner rval |= tmp_rval; 199430f712c9SDave Chinner if (error) 199530f712c9SDave Chinner goto done; 199630f712c9SDave Chinner } 199730f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 199830f712c9SDave Chinner startblockval(PREV.br_startblock) - 199930f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 200030f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 200130f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 200230f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 200330f712c9SDave Chinner 200430f712c9SDave Chinner bma->idx++; 200530f712c9SDave Chinner break; 200630f712c9SDave Chinner 200730f712c9SDave Chinner case 0: 200830f712c9SDave Chinner /* 200930f712c9SDave Chinner * Filling in the middle part of a previous delayed allocation. 201030f712c9SDave Chinner * Contiguity is impossible here. 201130f712c9SDave Chinner * This case is avoided almost all the time. 201230f712c9SDave Chinner * 201330f712c9SDave Chinner * We start with a delayed allocation: 201430f712c9SDave Chinner * 201530f712c9SDave Chinner * +ddddddddddddddddddddddddddddddddddddddddddddddddddddddd+ 201630f712c9SDave Chinner * PREV @ idx 201730f712c9SDave Chinner * 201830f712c9SDave Chinner * and we are allocating: 201930f712c9SDave Chinner * +rrrrrrrrrrrrrrrrr+ 202030f712c9SDave Chinner * new 202130f712c9SDave Chinner * 202230f712c9SDave Chinner * and we set it up for insertion as: 202330f712c9SDave Chinner * +ddddddddddddddddddd+rrrrrrrrrrrrrrrrr+ddddddddddddddddd+ 202430f712c9SDave Chinner * new 202530f712c9SDave Chinner * PREV @ idx LEFT RIGHT 202630f712c9SDave Chinner * inserted at idx + 1 202730f712c9SDave Chinner */ 202830f712c9SDave Chinner temp = new->br_startoff - PREV.br_startoff; 202930f712c9SDave Chinner temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff; 203030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, 0, _THIS_IP_); 203130f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); /* truncate PREV */ 203230f712c9SDave Chinner LEFT = *new; 203330f712c9SDave Chinner RIGHT.br_state = PREV.br_state; 203430f712c9SDave Chinner RIGHT.br_startblock = nullstartblock( 203530f712c9SDave Chinner (int)xfs_bmap_worst_indlen(bma->ip, temp2)); 203630f712c9SDave Chinner RIGHT.br_startoff = new_endoff; 203730f712c9SDave Chinner RIGHT.br_blockcount = temp2; 203830f712c9SDave Chinner /* insert LEFT (r[0]) and RIGHT (r[1]) at the same time */ 203930f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx + 1, 2, &LEFT, state); 204060b4984fSDarrick J. Wong (*nextents)++; 204130f712c9SDave Chinner if (bma->cur == NULL) 204230f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 204330f712c9SDave Chinner else { 204430f712c9SDave Chinner rval = XFS_ILOG_CORE; 204530f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 204630f712c9SDave Chinner new->br_startblock, new->br_blockcount, 204730f712c9SDave Chinner &i); 204830f712c9SDave Chinner if (error) 204930f712c9SDave Chinner goto done; 2050c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 205130f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 205230f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 205330f712c9SDave Chinner if (error) 205430f712c9SDave Chinner goto done; 2055c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 205630f712c9SDave Chinner } 205730f712c9SDave Chinner 20586d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 205930f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 20602c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 20616d3eb1ecSDarrick J. Wong 1, &tmp_rval, whichfork); 206230f712c9SDave Chinner rval |= tmp_rval; 206330f712c9SDave Chinner if (error) 206430f712c9SDave Chinner goto done; 206530f712c9SDave Chinner } 206630f712c9SDave Chinner temp = xfs_bmap_worst_indlen(bma->ip, temp); 206730f712c9SDave Chinner temp2 = xfs_bmap_worst_indlen(bma->ip, temp2); 20680daaecacSBrian Foster diff = (int)(temp + temp2 - 20690daaecacSBrian Foster (startblockval(PREV.br_startblock) - 20700daaecacSBrian Foster (bma->cur ? 20710daaecacSBrian Foster bma->cur->bc_private.b.allocated : 0))); 207230f712c9SDave Chinner if (diff > 0) { 20730d485adaSDave Chinner error = xfs_mod_fdblocks(bma->ip->i_mount, 20740d485adaSDave Chinner -((int64_t)diff), false); 207530f712c9SDave Chinner ASSERT(!error); 207630f712c9SDave Chinner if (error) 207730f712c9SDave Chinner goto done; 207830f712c9SDave Chinner } 207930f712c9SDave Chinner 208030f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 208130f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 208230f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 208330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx + 2, state, _THIS_IP_); 208430f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, bma->idx + 2), 208530f712c9SDave Chinner nullstartblock((int)temp2)); 208630f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 2, state, _THIS_IP_); 208730f712c9SDave Chinner 208830f712c9SDave Chinner bma->idx++; 208930f712c9SDave Chinner da_new = temp + temp2; 209030f712c9SDave Chinner break; 209130f712c9SDave Chinner 209230f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 209330f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 209430f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 209530f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 209630f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 209730f712c9SDave Chinner case BMAP_LEFT_CONTIG: 209830f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 209930f712c9SDave Chinner /* 210030f712c9SDave Chinner * These cases are all impossible. 210130f712c9SDave Chinner */ 210230f712c9SDave Chinner ASSERT(0); 210330f712c9SDave Chinner } 210430f712c9SDave Chinner 21059c194644SDarrick J. Wong /* add reverse mapping */ 21069c194644SDarrick J. Wong error = xfs_rmap_map_extent(mp, bma->dfops, bma->ip, whichfork, new); 21079c194644SDarrick J. Wong if (error) 21089c194644SDarrick J. Wong goto done; 21099c194644SDarrick J. Wong 211030f712c9SDave Chinner /* convert to a btree if necessary */ 21116d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 211230f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 211330f712c9SDave Chinner 211430f712c9SDave Chinner ASSERT(bma->cur == NULL); 211530f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 21162c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 21176d3eb1ecSDarrick J. Wong da_old > 0, &tmp_logflags, whichfork); 211830f712c9SDave Chinner bma->logflags |= tmp_logflags; 211930f712c9SDave Chinner if (error) 212030f712c9SDave Chinner goto done; 212130f712c9SDave Chinner } 212230f712c9SDave Chinner 212330f712c9SDave Chinner /* adjust for changes in reserved delayed indirect blocks */ 212430f712c9SDave Chinner if (da_old || da_new) { 212530f712c9SDave Chinner temp = da_new; 212630f712c9SDave Chinner if (bma->cur) 212730f712c9SDave Chinner temp += bma->cur->bc_private.b.allocated; 212830f712c9SDave Chinner if (temp < da_old) 21290d485adaSDave Chinner xfs_mod_fdblocks(bma->ip->i_mount, 21300d485adaSDave Chinner (int64_t)(da_old - temp), false); 213130f712c9SDave Chinner } 213230f712c9SDave Chinner 213330f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 213430f712c9SDave Chinner if (bma->cur) 213530f712c9SDave Chinner bma->cur->bc_private.b.allocated = 0; 213630f712c9SDave Chinner 21376d3eb1ecSDarrick J. Wong xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); 213830f712c9SDave Chinner done: 213960b4984fSDarrick J. Wong if (whichfork != XFS_COW_FORK) 214030f712c9SDave Chinner bma->logflags |= rval; 214130f712c9SDave Chinner return error; 214230f712c9SDave Chinner #undef LEFT 214330f712c9SDave Chinner #undef RIGHT 214430f712c9SDave Chinner #undef PREV 214530f712c9SDave Chinner } 214630f712c9SDave Chinner 214730f712c9SDave Chinner /* 214830f712c9SDave Chinner * Convert an unwritten allocation to a real allocation or vice versa. 214930f712c9SDave Chinner */ 215030f712c9SDave Chinner STATIC int /* error */ 215130f712c9SDave Chinner xfs_bmap_add_extent_unwritten_real( 215230f712c9SDave Chinner struct xfs_trans *tp, 215330f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 215405a630d7SDarrick J. Wong int whichfork, 215530f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/insert */ 215630f712c9SDave Chinner xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ 215730f712c9SDave Chinner xfs_bmbt_irec_t *new, /* new data to add to file extents */ 215830f712c9SDave Chinner xfs_fsblock_t *first, /* pointer to firstblock variable */ 21592c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* list of extents to be freed */ 216030f712c9SDave Chinner int *logflagsp) /* inode logging flags */ 216130f712c9SDave Chinner { 216230f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 216330f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ 216430f712c9SDave Chinner int error; /* error return value */ 216530f712c9SDave Chinner int i; /* temp state */ 216630f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 216730f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 216830f712c9SDave Chinner xfs_exntst_t newext; /* new extent state */ 216930f712c9SDave Chinner xfs_exntst_t oldext; /* old extent state */ 217030f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 217130f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 217230f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 217330f712c9SDave Chinner int state = 0;/* state bits, accessed thru macros */ 217405a630d7SDarrick J. Wong struct xfs_mount *mp = ip->i_mount; 217530f712c9SDave Chinner 217630f712c9SDave Chinner *logflagsp = 0; 217730f712c9SDave Chinner 217830f712c9SDave Chinner cur = *curp; 217905a630d7SDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 218005a630d7SDarrick J. Wong if (whichfork == XFS_COW_FORK) 218105a630d7SDarrick J. Wong state |= BMAP_COWFORK; 218230f712c9SDave Chinner 218330f712c9SDave Chinner ASSERT(*idx >= 0); 21845d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 218530f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 218630f712c9SDave Chinner 2187ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 218830f712c9SDave Chinner 218930f712c9SDave Chinner #define LEFT r[0] 219030f712c9SDave Chinner #define RIGHT r[1] 219130f712c9SDave Chinner #define PREV r[2] 219230f712c9SDave Chinner 219330f712c9SDave Chinner /* 219430f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 219530f712c9SDave Chinner */ 219630f712c9SDave Chinner error = 0; 219730f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, *idx); 219830f712c9SDave Chinner xfs_bmbt_get_all(ep, &PREV); 219930f712c9SDave Chinner newext = new->br_state; 220030f712c9SDave Chinner oldext = (newext == XFS_EXT_UNWRITTEN) ? 220130f712c9SDave Chinner XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 220230f712c9SDave Chinner ASSERT(PREV.br_state == oldext); 220330f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 220430f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 220530f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 220630f712c9SDave Chinner 220730f712c9SDave Chinner /* 220830f712c9SDave Chinner * Set flags determining what part of the previous oldext allocation 220930f712c9SDave Chinner * extent is being replaced by a newext allocation. 221030f712c9SDave Chinner */ 221130f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 221230f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 221330f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 221430f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 221530f712c9SDave Chinner 221630f712c9SDave Chinner /* 221730f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 221830f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 221930f712c9SDave Chinner */ 222030f712c9SDave Chinner if (*idx > 0) { 222130f712c9SDave Chinner state |= BMAP_LEFT_VALID; 222230f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &LEFT); 222330f712c9SDave Chinner 222430f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 222530f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 222630f712c9SDave Chinner } 222730f712c9SDave Chinner 222830f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 222930f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 223030f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 223130f712c9SDave Chinner LEFT.br_state == newext && 223230f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 223330f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 223430f712c9SDave Chinner 223530f712c9SDave Chinner /* 223630f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 223730f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 223830f712c9SDave Chinner * Also check for all-three-contiguous being too large. 223930f712c9SDave Chinner */ 224005a630d7SDarrick J. Wong if (*idx < xfs_iext_count(ifp) - 1) { 224130f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 224230f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx + 1), &RIGHT); 224330f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 224430f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 224530f712c9SDave Chinner } 224630f712c9SDave Chinner 224730f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 224830f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 224930f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 225030f712c9SDave Chinner newext == RIGHT.br_state && 225130f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 225230f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 225330f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 225430f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 225530f712c9SDave Chinner BMAP_RIGHT_FILLING) || 225630f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 225730f712c9SDave Chinner <= MAXEXTLEN)) 225830f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 225930f712c9SDave Chinner 226030f712c9SDave Chinner /* 226130f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 226230f712c9SDave Chinner */ 226330f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 226430f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 226530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 226630f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 226730f712c9SDave Chinner /* 226830f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 226930f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 227030f712c9SDave Chinner */ 227130f712c9SDave Chinner --*idx; 227230f712c9SDave Chinner 227330f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 227430f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 227530f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 227630f712c9SDave Chinner RIGHT.br_blockcount); 227730f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 227830f712c9SDave Chinner 227930f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 2, state); 228005a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 228105a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) - 2); 228230f712c9SDave Chinner if (cur == NULL) 228330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 228430f712c9SDave Chinner else { 228530f712c9SDave Chinner rval = XFS_ILOG_CORE; 228630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, 228730f712c9SDave Chinner RIGHT.br_startblock, 228830f712c9SDave Chinner RIGHT.br_blockcount, &i))) 228930f712c9SDave Chinner goto done; 2290c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 229130f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 229230f712c9SDave Chinner goto done; 2293c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 229430f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 229530f712c9SDave Chinner goto done; 2296c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 229730f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 229830f712c9SDave Chinner goto done; 2299c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 230030f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 230130f712c9SDave Chinner goto done; 2302c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 230330f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, 230430f712c9SDave Chinner LEFT.br_startblock, 230530f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 230630f712c9SDave Chinner RIGHT.br_blockcount, LEFT.br_state))) 230730f712c9SDave Chinner goto done; 230830f712c9SDave Chinner } 230930f712c9SDave Chinner break; 231030f712c9SDave Chinner 231130f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 231230f712c9SDave Chinner /* 231330f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 231430f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 231530f712c9SDave Chinner */ 231630f712c9SDave Chinner --*idx; 231730f712c9SDave Chinner 231830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 231930f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 232030f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount); 232130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 232230f712c9SDave Chinner 232330f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 232405a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 232505a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 232630f712c9SDave Chinner if (cur == NULL) 232730f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 232830f712c9SDave Chinner else { 232930f712c9SDave Chinner rval = XFS_ILOG_CORE; 233030f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 233130f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 233230f712c9SDave Chinner &i))) 233330f712c9SDave Chinner goto done; 2334c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 233530f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 233630f712c9SDave Chinner goto done; 2337c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 233830f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 233930f712c9SDave Chinner goto done; 2340c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 234130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, 234230f712c9SDave Chinner LEFT.br_startblock, 234330f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount, 234430f712c9SDave Chinner LEFT.br_state))) 234530f712c9SDave Chinner goto done; 234630f712c9SDave Chinner } 234730f712c9SDave Chinner break; 234830f712c9SDave Chinner 234930f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 235030f712c9SDave Chinner /* 235130f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 235230f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 235330f712c9SDave Chinner */ 235430f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 235530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 235630f712c9SDave Chinner PREV.br_blockcount + RIGHT.br_blockcount); 235730f712c9SDave Chinner xfs_bmbt_set_state(ep, newext); 235830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 235930f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 236005a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 236105a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 236230f712c9SDave Chinner if (cur == NULL) 236330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 236430f712c9SDave Chinner else { 236530f712c9SDave Chinner rval = XFS_ILOG_CORE; 236630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, 236730f712c9SDave Chinner RIGHT.br_startblock, 236830f712c9SDave Chinner RIGHT.br_blockcount, &i))) 236930f712c9SDave Chinner goto done; 2370c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 237130f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 237230f712c9SDave Chinner goto done; 2373c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 237430f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 237530f712c9SDave Chinner goto done; 2376c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 237730f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 237830f712c9SDave Chinner new->br_startblock, 237930f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 238030f712c9SDave Chinner newext))) 238130f712c9SDave Chinner goto done; 238230f712c9SDave Chinner } 238330f712c9SDave Chinner break; 238430f712c9SDave Chinner 238530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 238630f712c9SDave Chinner /* 238730f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 238830f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 238930f712c9SDave Chinner * the new one. 239030f712c9SDave Chinner */ 239130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 239230f712c9SDave Chinner xfs_bmbt_set_state(ep, newext); 239330f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 239430f712c9SDave Chinner 239530f712c9SDave Chinner if (cur == NULL) 239630f712c9SDave Chinner rval = XFS_ILOG_DEXT; 239730f712c9SDave Chinner else { 239830f712c9SDave Chinner rval = 0; 239930f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 240030f712c9SDave Chinner new->br_startblock, new->br_blockcount, 240130f712c9SDave Chinner &i))) 240230f712c9SDave Chinner goto done; 2403c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 240430f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 240530f712c9SDave Chinner new->br_startblock, new->br_blockcount, 240630f712c9SDave Chinner newext))) 240730f712c9SDave Chinner goto done; 240830f712c9SDave Chinner } 240930f712c9SDave Chinner break; 241030f712c9SDave Chinner 241130f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 241230f712c9SDave Chinner /* 241330f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 241430f712c9SDave Chinner * The left neighbor is contiguous. 241530f712c9SDave Chinner */ 241630f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx - 1, state, _THIS_IP_); 241730f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx - 1), 241830f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount); 241930f712c9SDave Chinner xfs_bmbt_set_startoff(ep, 242030f712c9SDave Chinner PREV.br_startoff + new->br_blockcount); 242130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx - 1, state, _THIS_IP_); 242230f712c9SDave Chinner 242330f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 242430f712c9SDave Chinner xfs_bmbt_set_startblock(ep, 242530f712c9SDave Chinner new->br_startblock + new->br_blockcount); 242630f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 242730f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 242830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 242930f712c9SDave Chinner 243030f712c9SDave Chinner --*idx; 243130f712c9SDave Chinner 243230f712c9SDave Chinner if (cur == NULL) 243330f712c9SDave Chinner rval = XFS_ILOG_DEXT; 243430f712c9SDave Chinner else { 243530f712c9SDave Chinner rval = 0; 243630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 243730f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 243830f712c9SDave Chinner &i))) 243930f712c9SDave Chinner goto done; 2440c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 244130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 244230f712c9SDave Chinner PREV.br_startoff + new->br_blockcount, 244330f712c9SDave Chinner PREV.br_startblock + new->br_blockcount, 244430f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 244530f712c9SDave Chinner oldext))) 244630f712c9SDave Chinner goto done; 244730f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 244830f712c9SDave Chinner goto done; 244930f712c9SDave Chinner error = xfs_bmbt_update(cur, LEFT.br_startoff, 245030f712c9SDave Chinner LEFT.br_startblock, 245130f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount, 245230f712c9SDave Chinner LEFT.br_state); 245330f712c9SDave Chinner if (error) 245430f712c9SDave Chinner goto done; 245530f712c9SDave Chinner } 245630f712c9SDave Chinner break; 245730f712c9SDave Chinner 245830f712c9SDave Chinner case BMAP_LEFT_FILLING: 245930f712c9SDave Chinner /* 246030f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 246130f712c9SDave Chinner * The left neighbor is not contiguous. 246230f712c9SDave Chinner */ 246330f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 246430f712c9SDave Chinner ASSERT(ep && xfs_bmbt_get_state(ep) == oldext); 246530f712c9SDave Chinner xfs_bmbt_set_startoff(ep, new_endoff); 246630f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 246730f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 246830f712c9SDave Chinner xfs_bmbt_set_startblock(ep, 246930f712c9SDave Chinner new->br_startblock + new->br_blockcount); 247030f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 247130f712c9SDave Chinner 247230f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 247305a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 247405a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 247530f712c9SDave Chinner if (cur == NULL) 247630f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 247730f712c9SDave Chinner else { 247830f712c9SDave Chinner rval = XFS_ILOG_CORE; 247930f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 248030f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 248130f712c9SDave Chinner &i))) 248230f712c9SDave Chinner goto done; 2483c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 248430f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 248530f712c9SDave Chinner PREV.br_startoff + new->br_blockcount, 248630f712c9SDave Chinner PREV.br_startblock + new->br_blockcount, 248730f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 248830f712c9SDave Chinner oldext))) 248930f712c9SDave Chinner goto done; 249030f712c9SDave Chinner cur->bc_rec.b = *new; 249130f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 249230f712c9SDave Chinner goto done; 2493c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 249430f712c9SDave Chinner } 249530f712c9SDave Chinner break; 249630f712c9SDave Chinner 249730f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 249830f712c9SDave Chinner /* 249930f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 250030f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 250130f712c9SDave Chinner */ 250230f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 250330f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 250430f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 250530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 250630f712c9SDave Chinner 250730f712c9SDave Chinner ++*idx; 250830f712c9SDave Chinner 250930f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 251030f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 251130f712c9SDave Chinner new->br_startoff, new->br_startblock, 251230f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, newext); 251330f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 251430f712c9SDave Chinner 251530f712c9SDave Chinner if (cur == NULL) 251630f712c9SDave Chinner rval = XFS_ILOG_DEXT; 251730f712c9SDave Chinner else { 251830f712c9SDave Chinner rval = 0; 251930f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 252030f712c9SDave Chinner PREV.br_startblock, 252130f712c9SDave Chinner PREV.br_blockcount, &i))) 252230f712c9SDave Chinner goto done; 2523c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 252430f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, PREV.br_startoff, 252530f712c9SDave Chinner PREV.br_startblock, 252630f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 252730f712c9SDave Chinner oldext))) 252830f712c9SDave Chinner goto done; 252930f712c9SDave Chinner if ((error = xfs_btree_increment(cur, 0, &i))) 253030f712c9SDave Chinner goto done; 253130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 253230f712c9SDave Chinner new->br_startblock, 253330f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 253430f712c9SDave Chinner newext))) 253530f712c9SDave Chinner goto done; 253630f712c9SDave Chinner } 253730f712c9SDave Chinner break; 253830f712c9SDave Chinner 253930f712c9SDave Chinner case BMAP_RIGHT_FILLING: 254030f712c9SDave Chinner /* 254130f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 254230f712c9SDave Chinner * The right neighbor is not contiguous. 254330f712c9SDave Chinner */ 254430f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 254530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 254630f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 254730f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 254830f712c9SDave Chinner 254930f712c9SDave Chinner ++*idx; 255030f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 255130f712c9SDave Chinner 255205a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 255305a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 255430f712c9SDave Chinner if (cur == NULL) 255530f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 255630f712c9SDave Chinner else { 255730f712c9SDave Chinner rval = XFS_ILOG_CORE; 255830f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 255930f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 256030f712c9SDave Chinner &i))) 256130f712c9SDave Chinner goto done; 2562c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 256330f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, PREV.br_startoff, 256430f712c9SDave Chinner PREV.br_startblock, 256530f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 256630f712c9SDave Chinner oldext))) 256730f712c9SDave Chinner goto done; 256830f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 256930f712c9SDave Chinner new->br_startblock, new->br_blockcount, 257030f712c9SDave Chinner &i))) 257130f712c9SDave Chinner goto done; 2572c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 257330f712c9SDave Chinner cur->bc_rec.b.br_state = XFS_EXT_NORM; 257430f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 257530f712c9SDave Chinner goto done; 2576c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 257730f712c9SDave Chinner } 257830f712c9SDave Chinner break; 257930f712c9SDave Chinner 258030f712c9SDave Chinner case 0: 258130f712c9SDave Chinner /* 258230f712c9SDave Chinner * Setting the middle part of a previous oldext extent to 258330f712c9SDave Chinner * newext. Contiguity is impossible here. 258430f712c9SDave Chinner * One extent becomes three extents. 258530f712c9SDave Chinner */ 258630f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 258730f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 258830f712c9SDave Chinner new->br_startoff - PREV.br_startoff); 258930f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 259030f712c9SDave Chinner 259130f712c9SDave Chinner r[0] = *new; 259230f712c9SDave Chinner r[1].br_startoff = new_endoff; 259330f712c9SDave Chinner r[1].br_blockcount = 259430f712c9SDave Chinner PREV.br_startoff + PREV.br_blockcount - new_endoff; 259530f712c9SDave Chinner r[1].br_startblock = new->br_startblock + new->br_blockcount; 259630f712c9SDave Chinner r[1].br_state = oldext; 259730f712c9SDave Chinner 259830f712c9SDave Chinner ++*idx; 259930f712c9SDave Chinner xfs_iext_insert(ip, *idx, 2, &r[0], state); 260030f712c9SDave Chinner 260105a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 260205a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) + 2); 260330f712c9SDave Chinner if (cur == NULL) 260430f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 260530f712c9SDave Chinner else { 260630f712c9SDave Chinner rval = XFS_ILOG_CORE; 260730f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 260830f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 260930f712c9SDave Chinner &i))) 261030f712c9SDave Chinner goto done; 2611c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 261230f712c9SDave Chinner /* new right extent - oldext */ 261330f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, r[1].br_startoff, 261430f712c9SDave Chinner r[1].br_startblock, r[1].br_blockcount, 261530f712c9SDave Chinner r[1].br_state))) 261630f712c9SDave Chinner goto done; 261730f712c9SDave Chinner /* new left extent - oldext */ 261830f712c9SDave Chinner cur->bc_rec.b = PREV; 261930f712c9SDave Chinner cur->bc_rec.b.br_blockcount = 262030f712c9SDave Chinner new->br_startoff - PREV.br_startoff; 262130f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 262230f712c9SDave Chinner goto done; 2623c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 262430f712c9SDave Chinner /* 262530f712c9SDave Chinner * Reset the cursor to the position of the new extent 262630f712c9SDave Chinner * we are about to insert as we can't trust it after 262730f712c9SDave Chinner * the previous insert. 262830f712c9SDave Chinner */ 262930f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 263030f712c9SDave Chinner new->br_startblock, new->br_blockcount, 263130f712c9SDave Chinner &i))) 263230f712c9SDave Chinner goto done; 2633c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 263430f712c9SDave Chinner /* new middle extent - newext */ 263530f712c9SDave Chinner cur->bc_rec.b.br_state = new->br_state; 263630f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 263730f712c9SDave Chinner goto done; 2638c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 263930f712c9SDave Chinner } 264030f712c9SDave Chinner break; 264130f712c9SDave Chinner 264230f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 264330f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 264430f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 264530f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 264630f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 264730f712c9SDave Chinner case BMAP_LEFT_CONTIG: 264830f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 264930f712c9SDave Chinner /* 265030f712c9SDave Chinner * These cases are all impossible. 265130f712c9SDave Chinner */ 265230f712c9SDave Chinner ASSERT(0); 265330f712c9SDave Chinner } 265430f712c9SDave Chinner 26559c194644SDarrick J. Wong /* update reverse mappings */ 265605a630d7SDarrick J. Wong error = xfs_rmap_convert_extent(mp, dfops, ip, whichfork, new); 26579c194644SDarrick J. Wong if (error) 26589c194644SDarrick J. Wong goto done; 26599c194644SDarrick J. Wong 266030f712c9SDave Chinner /* convert to a btree if necessary */ 266105a630d7SDarrick J. Wong if (xfs_bmap_needs_btree(ip, whichfork)) { 266230f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 266330f712c9SDave Chinner 266430f712c9SDave Chinner ASSERT(cur == NULL); 26652c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, first, dfops, &cur, 266605a630d7SDarrick J. Wong 0, &tmp_logflags, whichfork); 266730f712c9SDave Chinner *logflagsp |= tmp_logflags; 266830f712c9SDave Chinner if (error) 266930f712c9SDave Chinner goto done; 267030f712c9SDave Chinner } 267130f712c9SDave Chinner 267230f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 267330f712c9SDave Chinner if (cur) { 267430f712c9SDave Chinner cur->bc_private.b.allocated = 0; 267530f712c9SDave Chinner *curp = cur; 267630f712c9SDave Chinner } 267730f712c9SDave Chinner 267805a630d7SDarrick J. Wong xfs_bmap_check_leaf_extents(*curp, ip, whichfork); 267930f712c9SDave Chinner done: 268030f712c9SDave Chinner *logflagsp |= rval; 268130f712c9SDave Chinner return error; 268230f712c9SDave Chinner #undef LEFT 268330f712c9SDave Chinner #undef RIGHT 268430f712c9SDave Chinner #undef PREV 268530f712c9SDave Chinner } 268630f712c9SDave Chinner 268730f712c9SDave Chinner /* 268830f712c9SDave Chinner * Convert a hole to a delayed allocation. 268930f712c9SDave Chinner */ 269030f712c9SDave Chinner STATIC void 269130f712c9SDave Chinner xfs_bmap_add_extent_hole_delay( 269230f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 2693be51f811SDarrick J. Wong int whichfork, 269430f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/insert */ 269530f712c9SDave Chinner xfs_bmbt_irec_t *new) /* new data to add to file extents */ 269630f712c9SDave Chinner { 269730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 269830f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 269930f712c9SDave Chinner xfs_filblks_t newlen=0; /* new indirect size */ 270030f712c9SDave Chinner xfs_filblks_t oldlen=0; /* old indirect size */ 270130f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 270230f712c9SDave Chinner int state; /* state bits, accessed thru macros */ 270330f712c9SDave Chinner xfs_filblks_t temp=0; /* temp for indirect calculations */ 270430f712c9SDave Chinner 2705be51f811SDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 270630f712c9SDave Chinner state = 0; 2707be51f811SDarrick J. Wong if (whichfork == XFS_COW_FORK) 2708be51f811SDarrick J. Wong state |= BMAP_COWFORK; 270930f712c9SDave Chinner ASSERT(isnullstartblock(new->br_startblock)); 271030f712c9SDave Chinner 271130f712c9SDave Chinner /* 271230f712c9SDave Chinner * Check and set flags if this segment has a left neighbor 271330f712c9SDave Chinner */ 271430f712c9SDave Chinner if (*idx > 0) { 271530f712c9SDave Chinner state |= BMAP_LEFT_VALID; 271630f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &left); 271730f712c9SDave Chinner 271830f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 271930f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 272030f712c9SDave Chinner } 272130f712c9SDave Chinner 272230f712c9SDave Chinner /* 272330f712c9SDave Chinner * Check and set flags if the current (right) segment exists. 272430f712c9SDave Chinner * If it doesn't exist, we're converting the hole at end-of-file. 272530f712c9SDave Chinner */ 27265d829300SEric Sandeen if (*idx < xfs_iext_count(ifp)) { 272730f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 272830f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx), &right); 272930f712c9SDave Chinner 273030f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 273130f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 273230f712c9SDave Chinner } 273330f712c9SDave Chinner 273430f712c9SDave Chinner /* 273530f712c9SDave Chinner * Set contiguity flags on the left and right neighbors. 273630f712c9SDave Chinner * Don't let extents get too large, even if the pieces are contiguous. 273730f712c9SDave Chinner */ 273830f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) && 273930f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 274030f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 274130f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 274230f712c9SDave Chinner 274330f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) && 274430f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 274530f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 274630f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 274730f712c9SDave Chinner (left.br_blockcount + new->br_blockcount + 274830f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN))) 274930f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 275030f712c9SDave Chinner 275130f712c9SDave Chinner /* 275230f712c9SDave Chinner * Switch out based on the contiguity flags. 275330f712c9SDave Chinner */ 275430f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 275530f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 275630f712c9SDave Chinner /* 275730f712c9SDave Chinner * New allocation is contiguous with delayed allocations 275830f712c9SDave Chinner * on the left and on the right. 275930f712c9SDave Chinner * Merge all three into a single extent record. 276030f712c9SDave Chinner */ 276130f712c9SDave Chinner --*idx; 276230f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount + 276330f712c9SDave Chinner right.br_blockcount; 276430f712c9SDave Chinner 276530f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 276630f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp); 276730f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 276830f712c9SDave Chinner startblockval(new->br_startblock) + 276930f712c9SDave Chinner startblockval(right.br_startblock); 27700e339ef8SBrian Foster newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 27710e339ef8SBrian Foster oldlen); 277230f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx), 277330f712c9SDave Chinner nullstartblock((int)newlen)); 277430f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 277530f712c9SDave Chinner 277630f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 277730f712c9SDave Chinner break; 277830f712c9SDave Chinner 277930f712c9SDave Chinner case BMAP_LEFT_CONTIG: 278030f712c9SDave Chinner /* 278130f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 278230f712c9SDave Chinner * on the left. 278330f712c9SDave Chinner * Merge the new allocation with the left neighbor. 278430f712c9SDave Chinner */ 278530f712c9SDave Chinner --*idx; 278630f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount; 278730f712c9SDave Chinner 278830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 278930f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp); 279030f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 279130f712c9SDave Chinner startblockval(new->br_startblock); 27920e339ef8SBrian Foster newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 27930e339ef8SBrian Foster oldlen); 279430f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx), 279530f712c9SDave Chinner nullstartblock((int)newlen)); 279630f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 279730f712c9SDave Chinner break; 279830f712c9SDave Chinner 279930f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 280030f712c9SDave Chinner /* 280130f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 280230f712c9SDave Chinner * on the right. 280330f712c9SDave Chinner * Merge the new allocation with the right neighbor. 280430f712c9SDave Chinner */ 280530f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 280630f712c9SDave Chinner temp = new->br_blockcount + right.br_blockcount; 280730f712c9SDave Chinner oldlen = startblockval(new->br_startblock) + 280830f712c9SDave Chinner startblockval(right.br_startblock); 28090e339ef8SBrian Foster newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 28100e339ef8SBrian Foster oldlen); 281130f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 281230f712c9SDave Chinner new->br_startoff, 281330f712c9SDave Chinner nullstartblock((int)newlen), temp, right.br_state); 281430f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 281530f712c9SDave Chinner break; 281630f712c9SDave Chinner 281730f712c9SDave Chinner case 0: 281830f712c9SDave Chinner /* 281930f712c9SDave Chinner * New allocation is not contiguous with another 282030f712c9SDave Chinner * delayed allocation. 282130f712c9SDave Chinner * Insert a new entry. 282230f712c9SDave Chinner */ 282330f712c9SDave Chinner oldlen = newlen = 0; 282430f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 282530f712c9SDave Chinner break; 282630f712c9SDave Chinner } 282730f712c9SDave Chinner if (oldlen != newlen) { 282830f712c9SDave Chinner ASSERT(oldlen > newlen); 28290d485adaSDave Chinner xfs_mod_fdblocks(ip->i_mount, (int64_t)(oldlen - newlen), 28300d485adaSDave Chinner false); 283130f712c9SDave Chinner /* 283230f712c9SDave Chinner * Nothing to do for disk quota accounting here. 283330f712c9SDave Chinner */ 283430f712c9SDave Chinner } 283530f712c9SDave Chinner } 283630f712c9SDave Chinner 283730f712c9SDave Chinner /* 283830f712c9SDave Chinner * Convert a hole to a real allocation. 283930f712c9SDave Chinner */ 284030f712c9SDave Chinner STATIC int /* error */ 284130f712c9SDave Chinner xfs_bmap_add_extent_hole_real( 28426d04558fSChristoph Hellwig struct xfs_trans *tp, 28436d04558fSChristoph Hellwig struct xfs_inode *ip, 28446d04558fSChristoph Hellwig int whichfork, 28456d04558fSChristoph Hellwig xfs_extnum_t *idx, 28466d04558fSChristoph Hellwig struct xfs_btree_cur **curp, 28476d04558fSChristoph Hellwig struct xfs_bmbt_irec *new, 28486d04558fSChristoph Hellwig xfs_fsblock_t *first, 28496d04558fSChristoph Hellwig struct xfs_defer_ops *dfops, 28506d04558fSChristoph Hellwig int *logflagsp) 285130f712c9SDave Chinner { 28526d04558fSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 28536d04558fSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 28546d04558fSChristoph Hellwig struct xfs_btree_cur *cur = *curp; 285530f712c9SDave Chinner int error; /* error return value */ 285630f712c9SDave Chinner int i; /* temp state */ 285730f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 285830f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 285930f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 286030f712c9SDave Chinner int state; /* state bits, accessed thru macros */ 286130f712c9SDave Chinner 28626d04558fSChristoph Hellwig ASSERT(*idx >= 0); 28636d04558fSChristoph Hellwig ASSERT(*idx <= xfs_iext_count(ifp)); 286430f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 28656d04558fSChristoph Hellwig ASSERT(!cur || !(cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 286630f712c9SDave Chinner 2867ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 286830f712c9SDave Chinner 286930f712c9SDave Chinner state = 0; 287030f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 287130f712c9SDave Chinner state |= BMAP_ATTRFORK; 2872a14234c7SChristoph Hellwig if (whichfork == XFS_COW_FORK) 2873a14234c7SChristoph Hellwig state |= BMAP_COWFORK; 287430f712c9SDave Chinner 287530f712c9SDave Chinner /* 287630f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 287730f712c9SDave Chinner */ 28786d04558fSChristoph Hellwig if (*idx > 0) { 287930f712c9SDave Chinner state |= BMAP_LEFT_VALID; 28806d04558fSChristoph Hellwig xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &left); 288130f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 288230f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 288330f712c9SDave Chinner } 288430f712c9SDave Chinner 288530f712c9SDave Chinner /* 288630f712c9SDave Chinner * Check and set flags if this segment has a current value. 288730f712c9SDave Chinner * Not true if we're inserting into the "hole" at eof. 288830f712c9SDave Chinner */ 28896d04558fSChristoph Hellwig if (*idx < xfs_iext_count(ifp)) { 289030f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 28916d04558fSChristoph Hellwig xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx), &right); 289230f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 289330f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 289430f712c9SDave Chinner } 289530f712c9SDave Chinner 289630f712c9SDave Chinner /* 289730f712c9SDave Chinner * We're inserting a real allocation between "left" and "right". 289830f712c9SDave Chinner * Set the contiguity flags. Don't let extents get too large. 289930f712c9SDave Chinner */ 290030f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 290130f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 290230f712c9SDave Chinner left.br_startblock + left.br_blockcount == new->br_startblock && 290330f712c9SDave Chinner left.br_state == new->br_state && 290430f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 290530f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 290630f712c9SDave Chinner 290730f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 290830f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 290930f712c9SDave Chinner new->br_startblock + new->br_blockcount == right.br_startblock && 291030f712c9SDave Chinner new->br_state == right.br_state && 291130f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 291230f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 291330f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 291430f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN)) 291530f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 291630f712c9SDave Chinner 291730f712c9SDave Chinner error = 0; 291830f712c9SDave Chinner /* 291930f712c9SDave Chinner * Select which case we're in here, and implement it. 292030f712c9SDave Chinner */ 292130f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 292230f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 292330f712c9SDave Chinner /* 292430f712c9SDave Chinner * New allocation is contiguous with real allocations on the 292530f712c9SDave Chinner * left and on the right. 292630f712c9SDave Chinner * Merge all three into a single extent record. 292730f712c9SDave Chinner */ 29286d04558fSChristoph Hellwig --*idx; 29296d04558fSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 29306d04558fSChristoph Hellwig xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 293130f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 293230f712c9SDave Chinner right.br_blockcount); 29336d04558fSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 293430f712c9SDave Chinner 29356d04558fSChristoph Hellwig xfs_iext_remove(ip, *idx + 1, 1, state); 293630f712c9SDave Chinner 29376d04558fSChristoph Hellwig XFS_IFORK_NEXT_SET(ip, whichfork, 29386d04558fSChristoph Hellwig XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 29396d04558fSChristoph Hellwig if (cur == NULL) { 294030f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 294130f712c9SDave Chinner } else { 294230f712c9SDave Chinner rval = XFS_ILOG_CORE; 29436d04558fSChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, right.br_startoff, 294430f712c9SDave Chinner right.br_startblock, right.br_blockcount, 294530f712c9SDave Chinner &i); 294630f712c9SDave Chinner if (error) 294730f712c9SDave Chinner goto done; 2948c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 29496d04558fSChristoph Hellwig error = xfs_btree_delete(cur, &i); 295030f712c9SDave Chinner if (error) 295130f712c9SDave Chinner goto done; 2952c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 29536d04558fSChristoph Hellwig error = xfs_btree_decrement(cur, 0, &i); 295430f712c9SDave Chinner if (error) 295530f712c9SDave Chinner goto done; 2956c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 29576d04558fSChristoph Hellwig error = xfs_bmbt_update(cur, left.br_startoff, 295830f712c9SDave Chinner left.br_startblock, 295930f712c9SDave Chinner left.br_blockcount + 296030f712c9SDave Chinner new->br_blockcount + 296130f712c9SDave Chinner right.br_blockcount, 296230f712c9SDave Chinner left.br_state); 296330f712c9SDave Chinner if (error) 296430f712c9SDave Chinner goto done; 296530f712c9SDave Chinner } 296630f712c9SDave Chinner break; 296730f712c9SDave Chinner 296830f712c9SDave Chinner case BMAP_LEFT_CONTIG: 296930f712c9SDave Chinner /* 297030f712c9SDave Chinner * New allocation is contiguous with a real allocation 297130f712c9SDave Chinner * on the left. 297230f712c9SDave Chinner * Merge the new allocation with the left neighbor. 297330f712c9SDave Chinner */ 29746d04558fSChristoph Hellwig --*idx; 29756d04558fSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 29766d04558fSChristoph Hellwig xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 297730f712c9SDave Chinner left.br_blockcount + new->br_blockcount); 29786d04558fSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 297930f712c9SDave Chinner 29806d04558fSChristoph Hellwig if (cur == NULL) { 298130f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 298230f712c9SDave Chinner } else { 298330f712c9SDave Chinner rval = 0; 29846d04558fSChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, left.br_startoff, 298530f712c9SDave Chinner left.br_startblock, left.br_blockcount, 298630f712c9SDave Chinner &i); 298730f712c9SDave Chinner if (error) 298830f712c9SDave Chinner goto done; 2989c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 29906d04558fSChristoph Hellwig error = xfs_bmbt_update(cur, left.br_startoff, 299130f712c9SDave Chinner left.br_startblock, 299230f712c9SDave Chinner left.br_blockcount + 299330f712c9SDave Chinner new->br_blockcount, 299430f712c9SDave Chinner left.br_state); 299530f712c9SDave Chinner if (error) 299630f712c9SDave Chinner goto done; 299730f712c9SDave Chinner } 299830f712c9SDave Chinner break; 299930f712c9SDave Chinner 300030f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 300130f712c9SDave Chinner /* 300230f712c9SDave Chinner * New allocation is contiguous with a real allocation 300330f712c9SDave Chinner * on the right. 300430f712c9SDave Chinner * Merge the new allocation with the right neighbor. 300530f712c9SDave Chinner */ 30066d04558fSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 30076d04558fSChristoph Hellwig xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 300830f712c9SDave Chinner new->br_startoff, new->br_startblock, 300930f712c9SDave Chinner new->br_blockcount + right.br_blockcount, 301030f712c9SDave Chinner right.br_state); 30116d04558fSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 301230f712c9SDave Chinner 30136d04558fSChristoph Hellwig if (cur == NULL) { 301430f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 301530f712c9SDave Chinner } else { 301630f712c9SDave Chinner rval = 0; 30176d04558fSChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, 301830f712c9SDave Chinner right.br_startoff, 301930f712c9SDave Chinner right.br_startblock, 302030f712c9SDave Chinner right.br_blockcount, &i); 302130f712c9SDave Chinner if (error) 302230f712c9SDave Chinner goto done; 3023c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 30246d04558fSChristoph Hellwig error = xfs_bmbt_update(cur, new->br_startoff, 302530f712c9SDave Chinner new->br_startblock, 302630f712c9SDave Chinner new->br_blockcount + 302730f712c9SDave Chinner right.br_blockcount, 302830f712c9SDave Chinner right.br_state); 302930f712c9SDave Chinner if (error) 303030f712c9SDave Chinner goto done; 303130f712c9SDave Chinner } 303230f712c9SDave Chinner break; 303330f712c9SDave Chinner 303430f712c9SDave Chinner case 0: 303530f712c9SDave Chinner /* 303630f712c9SDave Chinner * New allocation is not contiguous with another 303730f712c9SDave Chinner * real allocation. 303830f712c9SDave Chinner * Insert a new entry. 303930f712c9SDave Chinner */ 30406d04558fSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, new, state); 30416d04558fSChristoph Hellwig XFS_IFORK_NEXT_SET(ip, whichfork, 30426d04558fSChristoph Hellwig XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 30436d04558fSChristoph Hellwig if (cur == NULL) { 304430f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 304530f712c9SDave Chinner } else { 304630f712c9SDave Chinner rval = XFS_ILOG_CORE; 30476d04558fSChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, 304830f712c9SDave Chinner new->br_startoff, 304930f712c9SDave Chinner new->br_startblock, 305030f712c9SDave Chinner new->br_blockcount, &i); 305130f712c9SDave Chinner if (error) 305230f712c9SDave Chinner goto done; 3053c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 30546d04558fSChristoph Hellwig cur->bc_rec.b.br_state = new->br_state; 30556d04558fSChristoph Hellwig error = xfs_btree_insert(cur, &i); 305630f712c9SDave Chinner if (error) 305730f712c9SDave Chinner goto done; 3058c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 305930f712c9SDave Chinner } 306030f712c9SDave Chinner break; 306130f712c9SDave Chinner } 306230f712c9SDave Chinner 30639c194644SDarrick J. Wong /* add reverse mapping */ 30646d04558fSChristoph Hellwig error = xfs_rmap_map_extent(mp, dfops, ip, whichfork, new); 30659c194644SDarrick J. Wong if (error) 30669c194644SDarrick J. Wong goto done; 30679c194644SDarrick J. Wong 306830f712c9SDave Chinner /* convert to a btree if necessary */ 30696d04558fSChristoph Hellwig if (xfs_bmap_needs_btree(ip, whichfork)) { 307030f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 307130f712c9SDave Chinner 30726d04558fSChristoph Hellwig ASSERT(cur == NULL); 30736d04558fSChristoph Hellwig error = xfs_bmap_extents_to_btree(tp, ip, first, dfops, curp, 307430f712c9SDave Chinner 0, &tmp_logflags, whichfork); 30756d04558fSChristoph Hellwig *logflagsp |= tmp_logflags; 30766d04558fSChristoph Hellwig cur = *curp; 307730f712c9SDave Chinner if (error) 307830f712c9SDave Chinner goto done; 307930f712c9SDave Chinner } 308030f712c9SDave Chinner 308130f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 30826d04558fSChristoph Hellwig if (cur) 30836d04558fSChristoph Hellwig cur->bc_private.b.allocated = 0; 308430f712c9SDave Chinner 30856d04558fSChristoph Hellwig xfs_bmap_check_leaf_extents(cur, ip, whichfork); 308630f712c9SDave Chinner done: 30876d04558fSChristoph Hellwig *logflagsp |= rval; 308830f712c9SDave Chinner return error; 308930f712c9SDave Chinner } 309030f712c9SDave Chinner 309130f712c9SDave Chinner /* 309230f712c9SDave Chinner * Functions used in the extent read, allocate and remove paths 309330f712c9SDave Chinner */ 309430f712c9SDave Chinner 309530f712c9SDave Chinner /* 309630f712c9SDave Chinner * Adjust the size of the new extent based on di_extsize and rt extsize. 309730f712c9SDave Chinner */ 309830f712c9SDave Chinner int 309930f712c9SDave Chinner xfs_bmap_extsize_align( 310030f712c9SDave Chinner xfs_mount_t *mp, 310130f712c9SDave Chinner xfs_bmbt_irec_t *gotp, /* next extent pointer */ 310230f712c9SDave Chinner xfs_bmbt_irec_t *prevp, /* previous extent pointer */ 310330f712c9SDave Chinner xfs_extlen_t extsz, /* align to this extent size */ 310430f712c9SDave Chinner int rt, /* is this a realtime inode? */ 310530f712c9SDave Chinner int eof, /* is extent at end-of-file? */ 310630f712c9SDave Chinner int delay, /* creating delalloc extent? */ 310730f712c9SDave Chinner int convert, /* overwriting unwritten extent? */ 310830f712c9SDave Chinner xfs_fileoff_t *offp, /* in/out: aligned offset */ 310930f712c9SDave Chinner xfs_extlen_t *lenp) /* in/out: aligned length */ 311030f712c9SDave Chinner { 311130f712c9SDave Chinner xfs_fileoff_t orig_off; /* original offset */ 311230f712c9SDave Chinner xfs_extlen_t orig_alen; /* original length */ 311330f712c9SDave Chinner xfs_fileoff_t orig_end; /* original off+len */ 311430f712c9SDave Chinner xfs_fileoff_t nexto; /* next file offset */ 311530f712c9SDave Chinner xfs_fileoff_t prevo; /* previous file offset */ 311630f712c9SDave Chinner xfs_fileoff_t align_off; /* temp for offset */ 311730f712c9SDave Chinner xfs_extlen_t align_alen; /* temp for length */ 311830f712c9SDave Chinner xfs_extlen_t temp; /* temp for calculations */ 311930f712c9SDave Chinner 312030f712c9SDave Chinner if (convert) 312130f712c9SDave Chinner return 0; 312230f712c9SDave Chinner 312330f712c9SDave Chinner orig_off = align_off = *offp; 312430f712c9SDave Chinner orig_alen = align_alen = *lenp; 312530f712c9SDave Chinner orig_end = orig_off + orig_alen; 312630f712c9SDave Chinner 312730f712c9SDave Chinner /* 312830f712c9SDave Chinner * If this request overlaps an existing extent, then don't 312930f712c9SDave Chinner * attempt to perform any additional alignment. 313030f712c9SDave Chinner */ 313130f712c9SDave Chinner if (!delay && !eof && 313230f712c9SDave Chinner (orig_off >= gotp->br_startoff) && 313330f712c9SDave Chinner (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { 313430f712c9SDave Chinner return 0; 313530f712c9SDave Chinner } 313630f712c9SDave Chinner 313730f712c9SDave Chinner /* 313830f712c9SDave Chinner * If the file offset is unaligned vs. the extent size 313930f712c9SDave Chinner * we need to align it. This will be possible unless 314030f712c9SDave Chinner * the file was previously written with a kernel that didn't 314130f712c9SDave Chinner * perform this alignment, or if a truncate shot us in the 314230f712c9SDave Chinner * foot. 314330f712c9SDave Chinner */ 314430f712c9SDave Chinner temp = do_mod(orig_off, extsz); 314530f712c9SDave Chinner if (temp) { 314630f712c9SDave Chinner align_alen += temp; 314730f712c9SDave Chinner align_off -= temp; 314830f712c9SDave Chinner } 31496dea405eSDave Chinner 31506dea405eSDave Chinner /* Same adjustment for the end of the requested area. */ 31516dea405eSDave Chinner temp = (align_alen % extsz); 31526dea405eSDave Chinner if (temp) 315330f712c9SDave Chinner align_alen += extsz - temp; 31546dea405eSDave Chinner 31556dea405eSDave Chinner /* 31566dea405eSDave Chinner * For large extent hint sizes, the aligned extent might be larger than 31576dea405eSDave Chinner * MAXEXTLEN. In that case, reduce the size by an extsz so that it pulls 31586dea405eSDave Chinner * the length back under MAXEXTLEN. The outer allocation loops handle 31596dea405eSDave Chinner * short allocation just fine, so it is safe to do this. We only want to 31606dea405eSDave Chinner * do it when we are forced to, though, because it means more allocation 31616dea405eSDave Chinner * operations are required. 31626dea405eSDave Chinner */ 31636dea405eSDave Chinner while (align_alen > MAXEXTLEN) 31646dea405eSDave Chinner align_alen -= extsz; 31656dea405eSDave Chinner ASSERT(align_alen <= MAXEXTLEN); 31666dea405eSDave Chinner 316730f712c9SDave Chinner /* 316830f712c9SDave Chinner * If the previous block overlaps with this proposed allocation 316930f712c9SDave Chinner * then move the start forward without adjusting the length. 317030f712c9SDave Chinner */ 317130f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) { 317230f712c9SDave Chinner if (prevp->br_startblock == HOLESTARTBLOCK) 317330f712c9SDave Chinner prevo = prevp->br_startoff; 317430f712c9SDave Chinner else 317530f712c9SDave Chinner prevo = prevp->br_startoff + prevp->br_blockcount; 317630f712c9SDave Chinner } else 317730f712c9SDave Chinner prevo = 0; 317830f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 317930f712c9SDave Chinner align_off = prevo; 318030f712c9SDave Chinner /* 318130f712c9SDave Chinner * If the next block overlaps with this proposed allocation 318230f712c9SDave Chinner * then move the start back without adjusting the length, 318330f712c9SDave Chinner * but not before offset 0. 318430f712c9SDave Chinner * This may of course make the start overlap previous block, 318530f712c9SDave Chinner * and if we hit the offset 0 limit then the next block 318630f712c9SDave Chinner * can still overlap too. 318730f712c9SDave Chinner */ 318830f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) { 318930f712c9SDave Chinner if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || 319030f712c9SDave Chinner (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) 319130f712c9SDave Chinner nexto = gotp->br_startoff + gotp->br_blockcount; 319230f712c9SDave Chinner else 319330f712c9SDave Chinner nexto = gotp->br_startoff; 319430f712c9SDave Chinner } else 319530f712c9SDave Chinner nexto = NULLFILEOFF; 319630f712c9SDave Chinner if (!eof && 319730f712c9SDave Chinner align_off + align_alen != orig_end && 319830f712c9SDave Chinner align_off + align_alen > nexto) 319930f712c9SDave Chinner align_off = nexto > align_alen ? nexto - align_alen : 0; 320030f712c9SDave Chinner /* 320130f712c9SDave Chinner * If we're now overlapping the next or previous extent that 320230f712c9SDave Chinner * means we can't fit an extsz piece in this hole. Just move 320330f712c9SDave Chinner * the start forward to the first valid spot and set 320430f712c9SDave Chinner * the length so we hit the end. 320530f712c9SDave Chinner */ 320630f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 320730f712c9SDave Chinner align_off = prevo; 320830f712c9SDave Chinner if (align_off + align_alen != orig_end && 320930f712c9SDave Chinner align_off + align_alen > nexto && 321030f712c9SDave Chinner nexto != NULLFILEOFF) { 321130f712c9SDave Chinner ASSERT(nexto > prevo); 321230f712c9SDave Chinner align_alen = nexto - align_off; 321330f712c9SDave Chinner } 321430f712c9SDave Chinner 321530f712c9SDave Chinner /* 321630f712c9SDave Chinner * If realtime, and the result isn't a multiple of the realtime 321730f712c9SDave Chinner * extent size we need to remove blocks until it is. 321830f712c9SDave Chinner */ 321930f712c9SDave Chinner if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) { 322030f712c9SDave Chinner /* 322130f712c9SDave Chinner * We're not covering the original request, or 322230f712c9SDave Chinner * we won't be able to once we fix the length. 322330f712c9SDave Chinner */ 322430f712c9SDave Chinner if (orig_off < align_off || 322530f712c9SDave Chinner orig_end > align_off + align_alen || 322630f712c9SDave Chinner align_alen - temp < orig_alen) 32272451337dSDave Chinner return -EINVAL; 322830f712c9SDave Chinner /* 322930f712c9SDave Chinner * Try to fix it by moving the start up. 323030f712c9SDave Chinner */ 323130f712c9SDave Chinner if (align_off + temp <= orig_off) { 323230f712c9SDave Chinner align_alen -= temp; 323330f712c9SDave Chinner align_off += temp; 323430f712c9SDave Chinner } 323530f712c9SDave Chinner /* 323630f712c9SDave Chinner * Try to fix it by moving the end in. 323730f712c9SDave Chinner */ 323830f712c9SDave Chinner else if (align_off + align_alen - temp >= orig_end) 323930f712c9SDave Chinner align_alen -= temp; 324030f712c9SDave Chinner /* 324130f712c9SDave Chinner * Set the start to the minimum then trim the length. 324230f712c9SDave Chinner */ 324330f712c9SDave Chinner else { 324430f712c9SDave Chinner align_alen -= orig_off - align_off; 324530f712c9SDave Chinner align_off = orig_off; 324630f712c9SDave Chinner align_alen -= align_alen % mp->m_sb.sb_rextsize; 324730f712c9SDave Chinner } 324830f712c9SDave Chinner /* 324930f712c9SDave Chinner * Result doesn't cover the request, fail it. 325030f712c9SDave Chinner */ 325130f712c9SDave Chinner if (orig_off < align_off || orig_end > align_off + align_alen) 32522451337dSDave Chinner return -EINVAL; 325330f712c9SDave Chinner } else { 325430f712c9SDave Chinner ASSERT(orig_off >= align_off); 32556dea405eSDave Chinner /* see MAXEXTLEN handling above */ 32566dea405eSDave Chinner ASSERT(orig_end <= align_off + align_alen || 32576dea405eSDave Chinner align_alen + extsz > MAXEXTLEN); 325830f712c9SDave Chinner } 325930f712c9SDave Chinner 326030f712c9SDave Chinner #ifdef DEBUG 326130f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) 326230f712c9SDave Chinner ASSERT(align_off + align_alen <= gotp->br_startoff); 326330f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) 326430f712c9SDave Chinner ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); 326530f712c9SDave Chinner #endif 326630f712c9SDave Chinner 326730f712c9SDave Chinner *lenp = align_alen; 326830f712c9SDave Chinner *offp = align_off; 326930f712c9SDave Chinner return 0; 327030f712c9SDave Chinner } 327130f712c9SDave Chinner 327230f712c9SDave Chinner #define XFS_ALLOC_GAP_UNITS 4 327330f712c9SDave Chinner 327430f712c9SDave Chinner void 327530f712c9SDave Chinner xfs_bmap_adjacent( 327630f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 327730f712c9SDave Chinner { 327830f712c9SDave Chinner xfs_fsblock_t adjust; /* adjustment to block numbers */ 327930f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 328030f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 328130f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 328230f712c9SDave Chinner int rt; /* true if inode is realtime */ 328330f712c9SDave Chinner 328430f712c9SDave Chinner #define ISVALID(x,y) \ 328530f712c9SDave Chinner (rt ? \ 328630f712c9SDave Chinner (x) < mp->m_sb.sb_rblocks : \ 328730f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \ 328830f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \ 328930f712c9SDave Chinner XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks) 329030f712c9SDave Chinner 329130f712c9SDave Chinner mp = ap->ip->i_mount; 329230f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 3293292378edSDave Chinner rt = XFS_IS_REALTIME_INODE(ap->ip) && 3294292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype); 329530f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 329630f712c9SDave Chinner /* 329730f712c9SDave Chinner * If allocating at eof, and there's a previous real block, 329830f712c9SDave Chinner * try to use its last block as our starting point. 329930f712c9SDave Chinner */ 330030f712c9SDave Chinner if (ap->eof && ap->prev.br_startoff != NULLFILEOFF && 330130f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 330230f712c9SDave Chinner ISVALID(ap->prev.br_startblock + ap->prev.br_blockcount, 330330f712c9SDave Chinner ap->prev.br_startblock)) { 330430f712c9SDave Chinner ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount; 330530f712c9SDave Chinner /* 330630f712c9SDave Chinner * Adjust for the gap between prevp and us. 330730f712c9SDave Chinner */ 330830f712c9SDave Chinner adjust = ap->offset - 330930f712c9SDave Chinner (ap->prev.br_startoff + ap->prev.br_blockcount); 331030f712c9SDave Chinner if (adjust && 331130f712c9SDave Chinner ISVALID(ap->blkno + adjust, ap->prev.br_startblock)) 331230f712c9SDave Chinner ap->blkno += adjust; 331330f712c9SDave Chinner } 331430f712c9SDave Chinner /* 331530f712c9SDave Chinner * If not at eof, then compare the two neighbor blocks. 331630f712c9SDave Chinner * Figure out whether either one gives us a good starting point, 331730f712c9SDave Chinner * and pick the better one. 331830f712c9SDave Chinner */ 331930f712c9SDave Chinner else if (!ap->eof) { 332030f712c9SDave Chinner xfs_fsblock_t gotbno; /* right side block number */ 332130f712c9SDave Chinner xfs_fsblock_t gotdiff=0; /* right side difference */ 332230f712c9SDave Chinner xfs_fsblock_t prevbno; /* left side block number */ 332330f712c9SDave Chinner xfs_fsblock_t prevdiff=0; /* left side difference */ 332430f712c9SDave Chinner 332530f712c9SDave Chinner /* 332630f712c9SDave Chinner * If there's a previous (left) block, select a requested 332730f712c9SDave Chinner * start block based on it. 332830f712c9SDave Chinner */ 332930f712c9SDave Chinner if (ap->prev.br_startoff != NULLFILEOFF && 333030f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 333130f712c9SDave Chinner (prevbno = ap->prev.br_startblock + 333230f712c9SDave Chinner ap->prev.br_blockcount) && 333330f712c9SDave Chinner ISVALID(prevbno, ap->prev.br_startblock)) { 333430f712c9SDave Chinner /* 333530f712c9SDave Chinner * Calculate gap to end of previous block. 333630f712c9SDave Chinner */ 333730f712c9SDave Chinner adjust = prevdiff = ap->offset - 333830f712c9SDave Chinner (ap->prev.br_startoff + 333930f712c9SDave Chinner ap->prev.br_blockcount); 334030f712c9SDave Chinner /* 334130f712c9SDave Chinner * Figure the startblock based on the previous block's 334230f712c9SDave Chinner * end and the gap size. 334330f712c9SDave Chinner * Heuristic! 334430f712c9SDave Chinner * If the gap is large relative to the piece we're 334530f712c9SDave Chinner * allocating, or using it gives us an invalid block 334630f712c9SDave Chinner * number, then just use the end of the previous block. 334730f712c9SDave Chinner */ 334830f712c9SDave Chinner if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 334930f712c9SDave Chinner ISVALID(prevbno + prevdiff, 335030f712c9SDave Chinner ap->prev.br_startblock)) 335130f712c9SDave Chinner prevbno += adjust; 335230f712c9SDave Chinner else 335330f712c9SDave Chinner prevdiff += adjust; 335430f712c9SDave Chinner /* 335530f712c9SDave Chinner * If the firstblock forbids it, can't use it, 335630f712c9SDave Chinner * must use default. 335730f712c9SDave Chinner */ 335830f712c9SDave Chinner if (!rt && !nullfb && 335930f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno) 336030f712c9SDave Chinner prevbno = NULLFSBLOCK; 336130f712c9SDave Chinner } 336230f712c9SDave Chinner /* 336330f712c9SDave Chinner * No previous block or can't follow it, just default. 336430f712c9SDave Chinner */ 336530f712c9SDave Chinner else 336630f712c9SDave Chinner prevbno = NULLFSBLOCK; 336730f712c9SDave Chinner /* 336830f712c9SDave Chinner * If there's a following (right) block, select a requested 336930f712c9SDave Chinner * start block based on it. 337030f712c9SDave Chinner */ 337130f712c9SDave Chinner if (!isnullstartblock(ap->got.br_startblock)) { 337230f712c9SDave Chinner /* 337330f712c9SDave Chinner * Calculate gap to start of next block. 337430f712c9SDave Chinner */ 337530f712c9SDave Chinner adjust = gotdiff = ap->got.br_startoff - ap->offset; 337630f712c9SDave Chinner /* 337730f712c9SDave Chinner * Figure the startblock based on the next block's 337830f712c9SDave Chinner * start and the gap size. 337930f712c9SDave Chinner */ 338030f712c9SDave Chinner gotbno = ap->got.br_startblock; 338130f712c9SDave Chinner /* 338230f712c9SDave Chinner * Heuristic! 338330f712c9SDave Chinner * If the gap is large relative to the piece we're 338430f712c9SDave Chinner * allocating, or using it gives us an invalid block 338530f712c9SDave Chinner * number, then just use the start of the next block 338630f712c9SDave Chinner * offset by our length. 338730f712c9SDave Chinner */ 338830f712c9SDave Chinner if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 338930f712c9SDave Chinner ISVALID(gotbno - gotdiff, gotbno)) 339030f712c9SDave Chinner gotbno -= adjust; 339130f712c9SDave Chinner else if (ISVALID(gotbno - ap->length, gotbno)) { 339230f712c9SDave Chinner gotbno -= ap->length; 339330f712c9SDave Chinner gotdiff += adjust - ap->length; 339430f712c9SDave Chinner } else 339530f712c9SDave Chinner gotdiff += adjust; 339630f712c9SDave Chinner /* 339730f712c9SDave Chinner * If the firstblock forbids it, can't use it, 339830f712c9SDave Chinner * must use default. 339930f712c9SDave Chinner */ 340030f712c9SDave Chinner if (!rt && !nullfb && 340130f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno) 340230f712c9SDave Chinner gotbno = NULLFSBLOCK; 340330f712c9SDave Chinner } 340430f712c9SDave Chinner /* 340530f712c9SDave Chinner * No next block, just default. 340630f712c9SDave Chinner */ 340730f712c9SDave Chinner else 340830f712c9SDave Chinner gotbno = NULLFSBLOCK; 340930f712c9SDave Chinner /* 341030f712c9SDave Chinner * If both valid, pick the better one, else the only good 341130f712c9SDave Chinner * one, else ap->blkno is already set (to 0 or the inode block). 341230f712c9SDave Chinner */ 341330f712c9SDave Chinner if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK) 341430f712c9SDave Chinner ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno; 341530f712c9SDave Chinner else if (prevbno != NULLFSBLOCK) 341630f712c9SDave Chinner ap->blkno = prevbno; 341730f712c9SDave Chinner else if (gotbno != NULLFSBLOCK) 341830f712c9SDave Chinner ap->blkno = gotbno; 341930f712c9SDave Chinner } 342030f712c9SDave Chinner #undef ISVALID 342130f712c9SDave Chinner } 342230f712c9SDave Chinner 342330f712c9SDave Chinner static int 342430f712c9SDave Chinner xfs_bmap_longest_free_extent( 342530f712c9SDave Chinner struct xfs_trans *tp, 342630f712c9SDave Chinner xfs_agnumber_t ag, 342730f712c9SDave Chinner xfs_extlen_t *blen, 342830f712c9SDave Chinner int *notinit) 342930f712c9SDave Chinner { 343030f712c9SDave Chinner struct xfs_mount *mp = tp->t_mountp; 343130f712c9SDave Chinner struct xfs_perag *pag; 343230f712c9SDave Chinner xfs_extlen_t longest; 343330f712c9SDave Chinner int error = 0; 343430f712c9SDave Chinner 343530f712c9SDave Chinner pag = xfs_perag_get(mp, ag); 343630f712c9SDave Chinner if (!pag->pagf_init) { 343730f712c9SDave Chinner error = xfs_alloc_pagf_init(mp, tp, ag, XFS_ALLOC_FLAG_TRYLOCK); 343830f712c9SDave Chinner if (error) 343930f712c9SDave Chinner goto out; 344030f712c9SDave Chinner 344130f712c9SDave Chinner if (!pag->pagf_init) { 344230f712c9SDave Chinner *notinit = 1; 344330f712c9SDave Chinner goto out; 344430f712c9SDave Chinner } 344530f712c9SDave Chinner } 344630f712c9SDave Chinner 344750adbcb4SDave Chinner longest = xfs_alloc_longest_free_extent(mp, pag, 34483fd129b6SDarrick J. Wong xfs_alloc_min_freelist(mp, pag), 34493fd129b6SDarrick J. Wong xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE)); 345030f712c9SDave Chinner if (*blen < longest) 345130f712c9SDave Chinner *blen = longest; 345230f712c9SDave Chinner 345330f712c9SDave Chinner out: 345430f712c9SDave Chinner xfs_perag_put(pag); 345530f712c9SDave Chinner return error; 345630f712c9SDave Chinner } 345730f712c9SDave Chinner 345830f712c9SDave Chinner static void 345930f712c9SDave Chinner xfs_bmap_select_minlen( 346030f712c9SDave Chinner struct xfs_bmalloca *ap, 346130f712c9SDave Chinner struct xfs_alloc_arg *args, 346230f712c9SDave Chinner xfs_extlen_t *blen, 346330f712c9SDave Chinner int notinit) 346430f712c9SDave Chinner { 346530f712c9SDave Chinner if (notinit || *blen < ap->minlen) { 346630f712c9SDave Chinner /* 346730f712c9SDave Chinner * Since we did a BUF_TRYLOCK above, it is possible that 346830f712c9SDave Chinner * there is space for this request. 346930f712c9SDave Chinner */ 347030f712c9SDave Chinner args->minlen = ap->minlen; 347130f712c9SDave Chinner } else if (*blen < args->maxlen) { 347230f712c9SDave Chinner /* 347330f712c9SDave Chinner * If the best seen length is less than the request length, 347430f712c9SDave Chinner * use the best as the minimum. 347530f712c9SDave Chinner */ 347630f712c9SDave Chinner args->minlen = *blen; 347730f712c9SDave Chinner } else { 347830f712c9SDave Chinner /* 347930f712c9SDave Chinner * Otherwise we've seen an extent as big as maxlen, use that 348030f712c9SDave Chinner * as the minimum. 348130f712c9SDave Chinner */ 348230f712c9SDave Chinner args->minlen = args->maxlen; 348330f712c9SDave Chinner } 348430f712c9SDave Chinner } 348530f712c9SDave Chinner 348630f712c9SDave Chinner STATIC int 348730f712c9SDave Chinner xfs_bmap_btalloc_nullfb( 348830f712c9SDave Chinner struct xfs_bmalloca *ap, 348930f712c9SDave Chinner struct xfs_alloc_arg *args, 349030f712c9SDave Chinner xfs_extlen_t *blen) 349130f712c9SDave Chinner { 349230f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 349330f712c9SDave Chinner xfs_agnumber_t ag, startag; 349430f712c9SDave Chinner int notinit = 0; 349530f712c9SDave Chinner int error; 349630f712c9SDave Chinner 349730f712c9SDave Chinner args->type = XFS_ALLOCTYPE_START_BNO; 349830f712c9SDave Chinner args->total = ap->total; 349930f712c9SDave Chinner 350030f712c9SDave Chinner startag = ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 350130f712c9SDave Chinner if (startag == NULLAGNUMBER) 350230f712c9SDave Chinner startag = ag = 0; 350330f712c9SDave Chinner 350430f712c9SDave Chinner while (*blen < args->maxlen) { 350530f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 350630f712c9SDave Chinner ¬init); 350730f712c9SDave Chinner if (error) 350830f712c9SDave Chinner return error; 350930f712c9SDave Chinner 351030f712c9SDave Chinner if (++ag == mp->m_sb.sb_agcount) 351130f712c9SDave Chinner ag = 0; 351230f712c9SDave Chinner if (ag == startag) 351330f712c9SDave Chinner break; 351430f712c9SDave Chinner } 351530f712c9SDave Chinner 351630f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 351730f712c9SDave Chinner return 0; 351830f712c9SDave Chinner } 351930f712c9SDave Chinner 352030f712c9SDave Chinner STATIC int 352130f712c9SDave Chinner xfs_bmap_btalloc_filestreams( 352230f712c9SDave Chinner struct xfs_bmalloca *ap, 352330f712c9SDave Chinner struct xfs_alloc_arg *args, 352430f712c9SDave Chinner xfs_extlen_t *blen) 352530f712c9SDave Chinner { 352630f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 352730f712c9SDave Chinner xfs_agnumber_t ag; 352830f712c9SDave Chinner int notinit = 0; 352930f712c9SDave Chinner int error; 353030f712c9SDave Chinner 353130f712c9SDave Chinner args->type = XFS_ALLOCTYPE_NEAR_BNO; 353230f712c9SDave Chinner args->total = ap->total; 353330f712c9SDave Chinner 353430f712c9SDave Chinner ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 353530f712c9SDave Chinner if (ag == NULLAGNUMBER) 353630f712c9SDave Chinner ag = 0; 353730f712c9SDave Chinner 353830f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, ¬init); 353930f712c9SDave Chinner if (error) 354030f712c9SDave Chinner return error; 354130f712c9SDave Chinner 354230f712c9SDave Chinner if (*blen < args->maxlen) { 354330f712c9SDave Chinner error = xfs_filestream_new_ag(ap, &ag); 354430f712c9SDave Chinner if (error) 354530f712c9SDave Chinner return error; 354630f712c9SDave Chinner 354730f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 354830f712c9SDave Chinner ¬init); 354930f712c9SDave Chinner if (error) 355030f712c9SDave Chinner return error; 355130f712c9SDave Chinner 355230f712c9SDave Chinner } 355330f712c9SDave Chinner 355430f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 355530f712c9SDave Chinner 355630f712c9SDave Chinner /* 355730f712c9SDave Chinner * Set the failure fallback case to look in the selected AG as stream 355830f712c9SDave Chinner * may have moved. 355930f712c9SDave Chinner */ 356030f712c9SDave Chinner ap->blkno = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0); 356130f712c9SDave Chinner return 0; 356230f712c9SDave Chinner } 356330f712c9SDave Chinner 356430f712c9SDave Chinner STATIC int 356530f712c9SDave Chinner xfs_bmap_btalloc( 356630f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 356730f712c9SDave Chinner { 356830f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 356930f712c9SDave Chinner xfs_alloctype_t atype = 0; /* type for allocation routines */ 3570292378edSDave Chinner xfs_extlen_t align = 0; /* minimum allocation alignment */ 357130f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 357230f712c9SDave Chinner xfs_agnumber_t ag; 357330f712c9SDave Chinner xfs_alloc_arg_t args; 357430f712c9SDave Chinner xfs_extlen_t blen; 357530f712c9SDave Chinner xfs_extlen_t nextminlen = 0; 357630f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 357730f712c9SDave Chinner int isaligned; 357830f712c9SDave Chinner int tryagain; 357930f712c9SDave Chinner int error; 358030f712c9SDave Chinner int stripe_align; 358130f712c9SDave Chinner 358230f712c9SDave Chinner ASSERT(ap->length); 358330f712c9SDave Chinner 358430f712c9SDave Chinner mp = ap->ip->i_mount; 358530f712c9SDave Chinner 358630f712c9SDave Chinner /* stripe alignment for allocation is determined by mount parameters */ 358730f712c9SDave Chinner stripe_align = 0; 358830f712c9SDave Chinner if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC)) 358930f712c9SDave Chinner stripe_align = mp->m_swidth; 359030f712c9SDave Chinner else if (mp->m_dalign) 359130f712c9SDave Chinner stripe_align = mp->m_dalign; 359230f712c9SDave Chinner 3593f7ca3522SDarrick J. Wong if (ap->flags & XFS_BMAPI_COWFORK) 3594f7ca3522SDarrick J. Wong align = xfs_get_cowextsz_hint(ap->ip); 3595f7ca3522SDarrick J. Wong else if (xfs_alloc_is_userdata(ap->datatype)) 3596292378edSDave Chinner align = xfs_get_extsz_hint(ap->ip); 3597493611ebSChristoph Hellwig if (align) { 359830f712c9SDave Chinner error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, 359930f712c9SDave Chinner align, 0, ap->eof, 0, ap->conv, 360030f712c9SDave Chinner &ap->offset, &ap->length); 360130f712c9SDave Chinner ASSERT(!error); 360230f712c9SDave Chinner ASSERT(ap->length); 360330f712c9SDave Chinner } 360430f712c9SDave Chinner 360530f712c9SDave Chinner 360630f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 360730f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 360830f712c9SDave Chinner if (nullfb) { 3609292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3610292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) { 361130f712c9SDave Chinner ag = xfs_filestream_lookup_ag(ap->ip); 361230f712c9SDave Chinner ag = (ag != NULLAGNUMBER) ? ag : 0; 361330f712c9SDave Chinner ap->blkno = XFS_AGB_TO_FSB(mp, ag, 0); 361430f712c9SDave Chinner } else { 361530f712c9SDave Chinner ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino); 361630f712c9SDave Chinner } 361730f712c9SDave Chinner } else 361830f712c9SDave Chinner ap->blkno = *ap->firstblock; 361930f712c9SDave Chinner 362030f712c9SDave Chinner xfs_bmap_adjacent(ap); 362130f712c9SDave Chinner 362230f712c9SDave Chinner /* 362330f712c9SDave Chinner * If allowed, use ap->blkno; otherwise must use firstblock since 362430f712c9SDave Chinner * it's in the right allocation group. 362530f712c9SDave Chinner */ 362630f712c9SDave Chinner if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno) 362730f712c9SDave Chinner ; 362830f712c9SDave Chinner else 362930f712c9SDave Chinner ap->blkno = *ap->firstblock; 363030f712c9SDave Chinner /* 363130f712c9SDave Chinner * Normal allocation, done through xfs_alloc_vextent. 363230f712c9SDave Chinner */ 363330f712c9SDave Chinner tryagain = isaligned = 0; 363430f712c9SDave Chinner memset(&args, 0, sizeof(args)); 363530f712c9SDave Chinner args.tp = ap->tp; 363630f712c9SDave Chinner args.mp = mp; 363730f712c9SDave Chinner args.fsbno = ap->blkno; 3638340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&args.oinfo); 363930f712c9SDave Chinner 364030f712c9SDave Chinner /* Trim the allocation back to the maximum an AG can fit. */ 364152548852SDarrick J. Wong args.maxlen = MIN(ap->length, mp->m_ag_max_usable); 364230f712c9SDave Chinner args.firstblock = *ap->firstblock; 364330f712c9SDave Chinner blen = 0; 364430f712c9SDave Chinner if (nullfb) { 364530f712c9SDave Chinner /* 364630f712c9SDave Chinner * Search for an allocation group with a single extent large 364730f712c9SDave Chinner * enough for the request. If one isn't found, then adjust 364830f712c9SDave Chinner * the minimum allocation size to the largest space found. 364930f712c9SDave Chinner */ 3650292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3651292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) 365230f712c9SDave Chinner error = xfs_bmap_btalloc_filestreams(ap, &args, &blen); 365330f712c9SDave Chinner else 365430f712c9SDave Chinner error = xfs_bmap_btalloc_nullfb(ap, &args, &blen); 365530f712c9SDave Chinner if (error) 365630f712c9SDave Chinner return error; 36572c3234d1SDarrick J. Wong } else if (ap->dfops->dop_low) { 365830f712c9SDave Chinner if (xfs_inode_is_filestream(ap->ip)) 365930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 366030f712c9SDave Chinner else 366130f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 366230f712c9SDave Chinner args.total = args.minlen = ap->minlen; 366330f712c9SDave Chinner } else { 366430f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 366530f712c9SDave Chinner args.total = ap->total; 366630f712c9SDave Chinner args.minlen = ap->minlen; 366730f712c9SDave Chinner } 366830f712c9SDave Chinner /* apply extent size hints if obtained earlier */ 3669493611ebSChristoph Hellwig if (align) { 367030f712c9SDave Chinner args.prod = align; 367130f712c9SDave Chinner if ((args.mod = (xfs_extlen_t)do_mod(ap->offset, args.prod))) 367230f712c9SDave Chinner args.mod = (xfs_extlen_t)(args.prod - args.mod); 367309cbfeafSKirill A. Shutemov } else if (mp->m_sb.sb_blocksize >= PAGE_SIZE) { 367430f712c9SDave Chinner args.prod = 1; 367530f712c9SDave Chinner args.mod = 0; 367630f712c9SDave Chinner } else { 367709cbfeafSKirill A. Shutemov args.prod = PAGE_SIZE >> mp->m_sb.sb_blocklog; 367830f712c9SDave Chinner if ((args.mod = (xfs_extlen_t)(do_mod(ap->offset, args.prod)))) 367930f712c9SDave Chinner args.mod = (xfs_extlen_t)(args.prod - args.mod); 368030f712c9SDave Chinner } 368130f712c9SDave Chinner /* 368230f712c9SDave Chinner * If we are not low on available data blocks, and the 368330f712c9SDave Chinner * underlying logical volume manager is a stripe, and 368430f712c9SDave Chinner * the file offset is zero then try to allocate data 368530f712c9SDave Chinner * blocks on stripe unit boundary. 368630f712c9SDave Chinner * NOTE: ap->aeof is only set if the allocation length 368730f712c9SDave Chinner * is >= the stripe unit and the allocation offset is 368830f712c9SDave Chinner * at the end of file. 368930f712c9SDave Chinner */ 36902c3234d1SDarrick J. Wong if (!ap->dfops->dop_low && ap->aeof) { 369130f712c9SDave Chinner if (!ap->offset) { 369230f712c9SDave Chinner args.alignment = stripe_align; 369330f712c9SDave Chinner atype = args.type; 369430f712c9SDave Chinner isaligned = 1; 369530f712c9SDave Chinner /* 369630f712c9SDave Chinner * Adjust for alignment 369730f712c9SDave Chinner */ 369830f712c9SDave Chinner if (blen > args.alignment && blen <= args.maxlen) 369930f712c9SDave Chinner args.minlen = blen - args.alignment; 370030f712c9SDave Chinner args.minalignslop = 0; 370130f712c9SDave Chinner } else { 370230f712c9SDave Chinner /* 370330f712c9SDave Chinner * First try an exact bno allocation. 370430f712c9SDave Chinner * If it fails then do a near or start bno 370530f712c9SDave Chinner * allocation with alignment turned on. 370630f712c9SDave Chinner */ 370730f712c9SDave Chinner atype = args.type; 370830f712c9SDave Chinner tryagain = 1; 370930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_THIS_BNO; 371030f712c9SDave Chinner args.alignment = 1; 371130f712c9SDave Chinner /* 371230f712c9SDave Chinner * Compute the minlen+alignment for the 371330f712c9SDave Chinner * next case. Set slop so that the value 371430f712c9SDave Chinner * of minlen+alignment+slop doesn't go up 371530f712c9SDave Chinner * between the calls. 371630f712c9SDave Chinner */ 371730f712c9SDave Chinner if (blen > stripe_align && blen <= args.maxlen) 371830f712c9SDave Chinner nextminlen = blen - stripe_align; 371930f712c9SDave Chinner else 372030f712c9SDave Chinner nextminlen = args.minlen; 372130f712c9SDave Chinner if (nextminlen + stripe_align > args.minlen + 1) 372230f712c9SDave Chinner args.minalignslop = 372330f712c9SDave Chinner nextminlen + stripe_align - 372430f712c9SDave Chinner args.minlen - 1; 372530f712c9SDave Chinner else 372630f712c9SDave Chinner args.minalignslop = 0; 372730f712c9SDave Chinner } 372830f712c9SDave Chinner } else { 372930f712c9SDave Chinner args.alignment = 1; 373030f712c9SDave Chinner args.minalignslop = 0; 373130f712c9SDave Chinner } 373230f712c9SDave Chinner args.minleft = ap->minleft; 373330f712c9SDave Chinner args.wasdel = ap->wasdel; 37343fd129b6SDarrick J. Wong args.resv = XFS_AG_RESV_NONE; 3735292378edSDave Chinner args.datatype = ap->datatype; 3736292378edSDave Chinner if (ap->datatype & XFS_ALLOC_USERDATA_ZERO) 37373fbbbea3SDave Chinner args.ip = ap->ip; 37383fbbbea3SDave Chinner 37393fbbbea3SDave Chinner error = xfs_alloc_vextent(&args); 37403fbbbea3SDave Chinner if (error) 374130f712c9SDave Chinner return error; 37423fbbbea3SDave Chinner 374330f712c9SDave Chinner if (tryagain && args.fsbno == NULLFSBLOCK) { 374430f712c9SDave Chinner /* 374530f712c9SDave Chinner * Exact allocation failed. Now try with alignment 374630f712c9SDave Chinner * turned on. 374730f712c9SDave Chinner */ 374830f712c9SDave Chinner args.type = atype; 374930f712c9SDave Chinner args.fsbno = ap->blkno; 375030f712c9SDave Chinner args.alignment = stripe_align; 375130f712c9SDave Chinner args.minlen = nextminlen; 375230f712c9SDave Chinner args.minalignslop = 0; 375330f712c9SDave Chinner isaligned = 1; 375430f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 375530f712c9SDave Chinner return error; 375630f712c9SDave Chinner } 375730f712c9SDave Chinner if (isaligned && args.fsbno == NULLFSBLOCK) { 375830f712c9SDave Chinner /* 375930f712c9SDave Chinner * allocation failed, so turn off alignment and 376030f712c9SDave Chinner * try again. 376130f712c9SDave Chinner */ 376230f712c9SDave Chinner args.type = atype; 376330f712c9SDave Chinner args.fsbno = ap->blkno; 376430f712c9SDave Chinner args.alignment = 0; 376530f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 376630f712c9SDave Chinner return error; 376730f712c9SDave Chinner } 376830f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb && 376930f712c9SDave Chinner args.minlen > ap->minlen) { 377030f712c9SDave Chinner args.minlen = ap->minlen; 377130f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 377230f712c9SDave Chinner args.fsbno = ap->blkno; 377330f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 377430f712c9SDave Chinner return error; 377530f712c9SDave Chinner } 377630f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb) { 377730f712c9SDave Chinner args.fsbno = 0; 377830f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 377930f712c9SDave Chinner args.total = ap->minlen; 378030f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 378130f712c9SDave Chinner return error; 37822c3234d1SDarrick J. Wong ap->dfops->dop_low = true; 378330f712c9SDave Chinner } 378430f712c9SDave Chinner if (args.fsbno != NULLFSBLOCK) { 378530f712c9SDave Chinner /* 378630f712c9SDave Chinner * check the allocation happened at the same or higher AG than 378730f712c9SDave Chinner * the first block that was allocated. 378830f712c9SDave Chinner */ 378930f712c9SDave Chinner ASSERT(*ap->firstblock == NULLFSBLOCK || 3790410d17f6SChristoph Hellwig XFS_FSB_TO_AGNO(mp, *ap->firstblock) <= 3791410d17f6SChristoph Hellwig XFS_FSB_TO_AGNO(mp, args.fsbno)); 379230f712c9SDave Chinner 379330f712c9SDave Chinner ap->blkno = args.fsbno; 379430f712c9SDave Chinner if (*ap->firstblock == NULLFSBLOCK) 379530f712c9SDave Chinner *ap->firstblock = args.fsbno; 3796410d17f6SChristoph Hellwig ASSERT(nullfb || fb_agno <= args.agno); 379730f712c9SDave Chinner ap->length = args.len; 379860b4984fSDarrick J. Wong if (!(ap->flags & XFS_BMAPI_COWFORK)) 379930f712c9SDave Chinner ap->ip->i_d.di_nblocks += args.len; 380030f712c9SDave Chinner xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); 380130f712c9SDave Chinner if (ap->wasdel) 380230f712c9SDave Chinner ap->ip->i_delayed_blks -= args.len; 380330f712c9SDave Chinner /* 380430f712c9SDave Chinner * Adjust the disk quota also. This was reserved 380530f712c9SDave Chinner * earlier. 380630f712c9SDave Chinner */ 380730f712c9SDave Chinner xfs_trans_mod_dquot_byino(ap->tp, ap->ip, 380830f712c9SDave Chinner ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT : 380930f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 381030f712c9SDave Chinner (long) args.len); 381130f712c9SDave Chinner } else { 381230f712c9SDave Chinner ap->blkno = NULLFSBLOCK; 381330f712c9SDave Chinner ap->length = 0; 381430f712c9SDave Chinner } 381530f712c9SDave Chinner return 0; 381630f712c9SDave Chinner } 381730f712c9SDave Chinner 381830f712c9SDave Chinner /* 381930f712c9SDave Chinner * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. 382030f712c9SDave Chinner * It figures out where to ask the underlying allocator to put the new extent. 382130f712c9SDave Chinner */ 382230f712c9SDave Chinner STATIC int 382330f712c9SDave Chinner xfs_bmap_alloc( 382430f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 382530f712c9SDave Chinner { 3826292378edSDave Chinner if (XFS_IS_REALTIME_INODE(ap->ip) && 3827292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype)) 382830f712c9SDave Chinner return xfs_bmap_rtalloc(ap); 382930f712c9SDave Chinner return xfs_bmap_btalloc(ap); 383030f712c9SDave Chinner } 383130f712c9SDave Chinner 38320a0af28cSDarrick J. Wong /* Trim extent to fit a logical block range. */ 38330a0af28cSDarrick J. Wong void 38340a0af28cSDarrick J. Wong xfs_trim_extent( 38350a0af28cSDarrick J. Wong struct xfs_bmbt_irec *irec, 38360a0af28cSDarrick J. Wong xfs_fileoff_t bno, 38370a0af28cSDarrick J. Wong xfs_filblks_t len) 38380a0af28cSDarrick J. Wong { 38390a0af28cSDarrick J. Wong xfs_fileoff_t distance; 38400a0af28cSDarrick J. Wong xfs_fileoff_t end = bno + len; 38410a0af28cSDarrick J. Wong 38420a0af28cSDarrick J. Wong if (irec->br_startoff + irec->br_blockcount <= bno || 38430a0af28cSDarrick J. Wong irec->br_startoff >= end) { 38440a0af28cSDarrick J. Wong irec->br_blockcount = 0; 38450a0af28cSDarrick J. Wong return; 38460a0af28cSDarrick J. Wong } 38470a0af28cSDarrick J. Wong 38480a0af28cSDarrick J. Wong if (irec->br_startoff < bno) { 38490a0af28cSDarrick J. Wong distance = bno - irec->br_startoff; 38500a0af28cSDarrick J. Wong if (isnullstartblock(irec->br_startblock)) 38510a0af28cSDarrick J. Wong irec->br_startblock = DELAYSTARTBLOCK; 38520a0af28cSDarrick J. Wong if (irec->br_startblock != DELAYSTARTBLOCK && 38530a0af28cSDarrick J. Wong irec->br_startblock != HOLESTARTBLOCK) 38540a0af28cSDarrick J. Wong irec->br_startblock += distance; 38550a0af28cSDarrick J. Wong irec->br_startoff += distance; 38560a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 38570a0af28cSDarrick J. Wong } 38580a0af28cSDarrick J. Wong 38590a0af28cSDarrick J. Wong if (end < irec->br_startoff + irec->br_blockcount) { 38600a0af28cSDarrick J. Wong distance = irec->br_startoff + irec->br_blockcount - end; 38610a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 38620a0af28cSDarrick J. Wong } 38630a0af28cSDarrick J. Wong } 38640a0af28cSDarrick J. Wong 386530f712c9SDave Chinner /* 386630f712c9SDave Chinner * Trim the returned map to the required bounds 386730f712c9SDave Chinner */ 386830f712c9SDave Chinner STATIC void 386930f712c9SDave Chinner xfs_bmapi_trim_map( 387030f712c9SDave Chinner struct xfs_bmbt_irec *mval, 387130f712c9SDave Chinner struct xfs_bmbt_irec *got, 387230f712c9SDave Chinner xfs_fileoff_t *bno, 387330f712c9SDave Chinner xfs_filblks_t len, 387430f712c9SDave Chinner xfs_fileoff_t obno, 387530f712c9SDave Chinner xfs_fileoff_t end, 387630f712c9SDave Chinner int n, 387730f712c9SDave Chinner int flags) 387830f712c9SDave Chinner { 387930f712c9SDave Chinner if ((flags & XFS_BMAPI_ENTIRE) || 388030f712c9SDave Chinner got->br_startoff + got->br_blockcount <= obno) { 388130f712c9SDave Chinner *mval = *got; 388230f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 388330f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 388430f712c9SDave Chinner return; 388530f712c9SDave Chinner } 388630f712c9SDave Chinner 388730f712c9SDave Chinner if (obno > *bno) 388830f712c9SDave Chinner *bno = obno; 388930f712c9SDave Chinner ASSERT((*bno >= obno) || (n == 0)); 389030f712c9SDave Chinner ASSERT(*bno < end); 389130f712c9SDave Chinner mval->br_startoff = *bno; 389230f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 389330f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 389430f712c9SDave Chinner else 389530f712c9SDave Chinner mval->br_startblock = got->br_startblock + 389630f712c9SDave Chinner (*bno - got->br_startoff); 389730f712c9SDave Chinner /* 389830f712c9SDave Chinner * Return the minimum of what we got and what we asked for for 389930f712c9SDave Chinner * the length. We can use the len variable here because it is 390030f712c9SDave Chinner * modified below and we could have been there before coming 390130f712c9SDave Chinner * here if the first part of the allocation didn't overlap what 390230f712c9SDave Chinner * was asked for. 390330f712c9SDave Chinner */ 390430f712c9SDave Chinner mval->br_blockcount = XFS_FILBLKS_MIN(end - *bno, 390530f712c9SDave Chinner got->br_blockcount - (*bno - got->br_startoff)); 390630f712c9SDave Chinner mval->br_state = got->br_state; 390730f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 390830f712c9SDave Chinner return; 390930f712c9SDave Chinner } 391030f712c9SDave Chinner 391130f712c9SDave Chinner /* 391230f712c9SDave Chinner * Update and validate the extent map to return 391330f712c9SDave Chinner */ 391430f712c9SDave Chinner STATIC void 391530f712c9SDave Chinner xfs_bmapi_update_map( 391630f712c9SDave Chinner struct xfs_bmbt_irec **map, 391730f712c9SDave Chinner xfs_fileoff_t *bno, 391830f712c9SDave Chinner xfs_filblks_t *len, 391930f712c9SDave Chinner xfs_fileoff_t obno, 392030f712c9SDave Chinner xfs_fileoff_t end, 392130f712c9SDave Chinner int *n, 392230f712c9SDave Chinner int flags) 392330f712c9SDave Chinner { 392430f712c9SDave Chinner xfs_bmbt_irec_t *mval = *map; 392530f712c9SDave Chinner 392630f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || 392730f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= end)); 392830f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= *len) || 392930f712c9SDave Chinner (mval->br_startoff < obno)); 393030f712c9SDave Chinner 393130f712c9SDave Chinner *bno = mval->br_startoff + mval->br_blockcount; 393230f712c9SDave Chinner *len = end - *bno; 393330f712c9SDave Chinner if (*n > 0 && mval->br_startoff == mval[-1].br_startoff) { 393430f712c9SDave Chinner /* update previous map with new information */ 393530f712c9SDave Chinner ASSERT(mval->br_startblock == mval[-1].br_startblock); 393630f712c9SDave Chinner ASSERT(mval->br_blockcount > mval[-1].br_blockcount); 393730f712c9SDave Chinner ASSERT(mval->br_state == mval[-1].br_state); 393830f712c9SDave Chinner mval[-1].br_blockcount = mval->br_blockcount; 393930f712c9SDave Chinner mval[-1].br_state = mval->br_state; 394030f712c9SDave Chinner } else if (*n > 0 && mval->br_startblock != DELAYSTARTBLOCK && 394130f712c9SDave Chinner mval[-1].br_startblock != DELAYSTARTBLOCK && 394230f712c9SDave Chinner mval[-1].br_startblock != HOLESTARTBLOCK && 394330f712c9SDave Chinner mval->br_startblock == mval[-1].br_startblock + 394430f712c9SDave Chinner mval[-1].br_blockcount && 394530f712c9SDave Chinner ((flags & XFS_BMAPI_IGSTATE) || 394630f712c9SDave Chinner mval[-1].br_state == mval->br_state)) { 394730f712c9SDave Chinner ASSERT(mval->br_startoff == 394830f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount); 394930f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 395030f712c9SDave Chinner } else if (*n > 0 && 395130f712c9SDave Chinner mval->br_startblock == DELAYSTARTBLOCK && 395230f712c9SDave Chinner mval[-1].br_startblock == DELAYSTARTBLOCK && 395330f712c9SDave Chinner mval->br_startoff == 395430f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount) { 395530f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 395630f712c9SDave Chinner mval[-1].br_state = mval->br_state; 395730f712c9SDave Chinner } else if (!((*n == 0) && 395830f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= 395930f712c9SDave Chinner obno))) { 396030f712c9SDave Chinner mval++; 396130f712c9SDave Chinner (*n)++; 396230f712c9SDave Chinner } 396330f712c9SDave Chinner *map = mval; 396430f712c9SDave Chinner } 396530f712c9SDave Chinner 396630f712c9SDave Chinner /* 396730f712c9SDave Chinner * Map file blocks to filesystem blocks without allocation. 396830f712c9SDave Chinner */ 396930f712c9SDave Chinner int 397030f712c9SDave Chinner xfs_bmapi_read( 397130f712c9SDave Chinner struct xfs_inode *ip, 397230f712c9SDave Chinner xfs_fileoff_t bno, 397330f712c9SDave Chinner xfs_filblks_t len, 397430f712c9SDave Chinner struct xfs_bmbt_irec *mval, 397530f712c9SDave Chinner int *nmap, 397630f712c9SDave Chinner int flags) 397730f712c9SDave Chinner { 397830f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 397930f712c9SDave Chinner struct xfs_ifork *ifp; 398030f712c9SDave Chinner struct xfs_bmbt_irec got; 398130f712c9SDave Chinner xfs_fileoff_t obno; 398230f712c9SDave Chinner xfs_fileoff_t end; 3983334f3423SChristoph Hellwig xfs_extnum_t idx; 398430f712c9SDave Chinner int error; 3985334f3423SChristoph Hellwig bool eof = false; 398630f712c9SDave Chinner int n = 0; 39873993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 398830f712c9SDave Chinner 398930f712c9SDave Chinner ASSERT(*nmap >= 1); 399030f712c9SDave Chinner ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE| 39913993baebSDarrick J. Wong XFS_BMAPI_IGSTATE|XFS_BMAPI_COWFORK))); 399230f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)); 399330f712c9SDave Chinner 399430f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 399530f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 399630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 399730f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 399830f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_read", XFS_ERRLEVEL_LOW, mp); 39992451337dSDave Chinner return -EFSCORRUPTED; 400030f712c9SDave Chinner } 400130f712c9SDave Chinner 400230f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 40032451337dSDave Chinner return -EIO; 400430f712c9SDave Chinner 4005ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapr); 400630f712c9SDave Chinner 400730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 400830f712c9SDave Chinner 40093993baebSDarrick J. Wong /* No CoW fork? Return a hole. */ 40103993baebSDarrick J. Wong if (whichfork == XFS_COW_FORK && !ifp) { 40113993baebSDarrick J. Wong mval->br_startoff = bno; 40123993baebSDarrick J. Wong mval->br_startblock = HOLESTARTBLOCK; 40133993baebSDarrick J. Wong mval->br_blockcount = len; 40143993baebSDarrick J. Wong mval->br_state = XFS_EXT_NORM; 40153993baebSDarrick J. Wong *nmap = 1; 40163993baebSDarrick J. Wong return 0; 40173993baebSDarrick J. Wong } 40183993baebSDarrick J. Wong 401930f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 402030f712c9SDave Chinner error = xfs_iread_extents(NULL, ip, whichfork); 402130f712c9SDave Chinner if (error) 402230f712c9SDave Chinner return error; 402330f712c9SDave Chinner } 402430f712c9SDave Chinner 4025334f3423SChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &idx, &got)) 4026334f3423SChristoph Hellwig eof = true; 402730f712c9SDave Chinner end = bno + len; 402830f712c9SDave Chinner obno = bno; 402930f712c9SDave Chinner 403030f712c9SDave Chinner while (bno < end && n < *nmap) { 403130f712c9SDave Chinner /* Reading past eof, act as though there's a hole up to end. */ 403230f712c9SDave Chinner if (eof) 403330f712c9SDave Chinner got.br_startoff = end; 403430f712c9SDave Chinner if (got.br_startoff > bno) { 403530f712c9SDave Chinner /* Reading in a hole. */ 403630f712c9SDave Chinner mval->br_startoff = bno; 403730f712c9SDave Chinner mval->br_startblock = HOLESTARTBLOCK; 403830f712c9SDave Chinner mval->br_blockcount = 403930f712c9SDave Chinner XFS_FILBLKS_MIN(len, got.br_startoff - bno); 404030f712c9SDave Chinner mval->br_state = XFS_EXT_NORM; 404130f712c9SDave Chinner bno += mval->br_blockcount; 404230f712c9SDave Chinner len -= mval->br_blockcount; 404330f712c9SDave Chinner mval++; 404430f712c9SDave Chinner n++; 404530f712c9SDave Chinner continue; 404630f712c9SDave Chinner } 404730f712c9SDave Chinner 404830f712c9SDave Chinner /* set up the extent map to return. */ 404930f712c9SDave Chinner xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags); 405030f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 405130f712c9SDave Chinner 405230f712c9SDave Chinner /* If we're done, stop now. */ 405330f712c9SDave Chinner if (bno >= end || n >= *nmap) 405430f712c9SDave Chinner break; 405530f712c9SDave Chinner 405630f712c9SDave Chinner /* Else go on to the next record. */ 4057334f3423SChristoph Hellwig if (!xfs_iext_get_extent(ifp, ++idx, &got)) 4058334f3423SChristoph Hellwig eof = true; 405930f712c9SDave Chinner } 406030f712c9SDave Chinner *nmap = n; 406130f712c9SDave Chinner return 0; 406230f712c9SDave Chinner } 406330f712c9SDave Chinner 4064f65e6fadSBrian Foster /* 4065f65e6fadSBrian Foster * Add a delayed allocation extent to an inode. Blocks are reserved from the 4066f65e6fadSBrian Foster * global pool and the extent inserted into the inode in-core extent tree. 4067f65e6fadSBrian Foster * 4068f65e6fadSBrian Foster * On entry, got refers to the first extent beyond the offset of the extent to 4069f65e6fadSBrian Foster * allocate or eof is specified if no such extent exists. On return, got refers 4070f65e6fadSBrian Foster * to the extent record that was inserted to the inode fork. 4071f65e6fadSBrian Foster * 4072f65e6fadSBrian Foster * Note that the allocated extent may have been merged with contiguous extents 4073f65e6fadSBrian Foster * during insertion into the inode fork. Thus, got does not reflect the current 4074f65e6fadSBrian Foster * state of the inode fork on return. If necessary, the caller can use lastx to 4075f65e6fadSBrian Foster * look up the updated record in the inode fork. 4076f65e6fadSBrian Foster */ 407751446f5bSChristoph Hellwig int 407830f712c9SDave Chinner xfs_bmapi_reserve_delalloc( 407930f712c9SDave Chinner struct xfs_inode *ip, 4080be51f811SDarrick J. Wong int whichfork, 4081974ae922SBrian Foster xfs_fileoff_t off, 408230f712c9SDave Chinner xfs_filblks_t len, 4083974ae922SBrian Foster xfs_filblks_t prealloc, 408430f712c9SDave Chinner struct xfs_bmbt_irec *got, 408530f712c9SDave Chinner xfs_extnum_t *lastx, 408630f712c9SDave Chinner int eof) 408730f712c9SDave Chinner { 408830f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 4089be51f811SDarrick J. Wong struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 409030f712c9SDave Chinner xfs_extlen_t alen; 409130f712c9SDave Chinner xfs_extlen_t indlen; 409230f712c9SDave Chinner char rt = XFS_IS_REALTIME_INODE(ip); 409330f712c9SDave Chinner xfs_extlen_t extsz; 409430f712c9SDave Chinner int error; 4095974ae922SBrian Foster xfs_fileoff_t aoff = off; 409630f712c9SDave Chinner 4097974ae922SBrian Foster /* 4098974ae922SBrian Foster * Cap the alloc length. Keep track of prealloc so we know whether to 4099974ae922SBrian Foster * tag the inode before we return. 4100974ae922SBrian Foster */ 4101974ae922SBrian Foster alen = XFS_FILBLKS_MIN(len + prealloc, MAXEXTLEN); 410230f712c9SDave Chinner if (!eof) 410330f712c9SDave Chinner alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff); 4104974ae922SBrian Foster if (prealloc && alen >= len) 4105974ae922SBrian Foster prealloc = alen - len; 410630f712c9SDave Chinner 410730f712c9SDave Chinner /* Figure out the extent size, adjust alen */ 4108f7ca3522SDarrick J. Wong if (whichfork == XFS_COW_FORK) 4109f7ca3522SDarrick J. Wong extsz = xfs_get_cowextsz_hint(ip); 4110f7ca3522SDarrick J. Wong else 411130f712c9SDave Chinner extsz = xfs_get_extsz_hint(ip); 411230f712c9SDave Chinner if (extsz) { 411365c5f419SChristoph Hellwig struct xfs_bmbt_irec prev; 411465c5f419SChristoph Hellwig 411565c5f419SChristoph Hellwig if (!xfs_iext_get_extent(ifp, *lastx - 1, &prev)) 411665c5f419SChristoph Hellwig prev.br_startoff = NULLFILEOFF; 411765c5f419SChristoph Hellwig 411865c5f419SChristoph Hellwig error = xfs_bmap_extsize_align(mp, got, &prev, extsz, rt, eof, 411930f712c9SDave Chinner 1, 0, &aoff, &alen); 412030f712c9SDave Chinner ASSERT(!error); 412130f712c9SDave Chinner } 412230f712c9SDave Chinner 412330f712c9SDave Chinner if (rt) 412430f712c9SDave Chinner extsz = alen / mp->m_sb.sb_rextsize; 412530f712c9SDave Chinner 412630f712c9SDave Chinner /* 412730f712c9SDave Chinner * Make a transaction-less quota reservation for delayed allocation 412830f712c9SDave Chinner * blocks. This number gets adjusted later. We return if we haven't 412930f712c9SDave Chinner * allocated blocks already inside this loop. 413030f712c9SDave Chinner */ 413130f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(NULL, ip, (long)alen, 0, 413230f712c9SDave Chinner rt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 413330f712c9SDave Chinner if (error) 413430f712c9SDave Chinner return error; 413530f712c9SDave Chinner 413630f712c9SDave Chinner /* 413730f712c9SDave Chinner * Split changing sb for alen and indlen since they could be coming 413830f712c9SDave Chinner * from different places. 413930f712c9SDave Chinner */ 414030f712c9SDave Chinner indlen = (xfs_extlen_t)xfs_bmap_worst_indlen(ip, alen); 414130f712c9SDave Chinner ASSERT(indlen > 0); 414230f712c9SDave Chinner 414330f712c9SDave Chinner if (rt) { 4144bab98bbeSDave Chinner error = xfs_mod_frextents(mp, -((int64_t)extsz)); 414530f712c9SDave Chinner } else { 41460d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)alen), false); 414730f712c9SDave Chinner } 414830f712c9SDave Chinner 414930f712c9SDave Chinner if (error) 415030f712c9SDave Chinner goto out_unreserve_quota; 415130f712c9SDave Chinner 41520d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)indlen), false); 415330f712c9SDave Chinner if (error) 415430f712c9SDave Chinner goto out_unreserve_blocks; 415530f712c9SDave Chinner 415630f712c9SDave Chinner 415730f712c9SDave Chinner ip->i_delayed_blks += alen; 415830f712c9SDave Chinner 415930f712c9SDave Chinner got->br_startoff = aoff; 416030f712c9SDave Chinner got->br_startblock = nullstartblock(indlen); 416130f712c9SDave Chinner got->br_blockcount = alen; 416230f712c9SDave Chinner got->br_state = XFS_EXT_NORM; 416330f712c9SDave Chinner 4164f65e6fadSBrian Foster xfs_bmap_add_extent_hole_delay(ip, whichfork, lastx, got); 416530f712c9SDave Chinner 4166974ae922SBrian Foster /* 4167974ae922SBrian Foster * Tag the inode if blocks were preallocated. Note that COW fork 4168974ae922SBrian Foster * preallocation can occur at the start or end of the extent, even when 4169974ae922SBrian Foster * prealloc == 0, so we must also check the aligned offset and length. 4170974ae922SBrian Foster */ 4171974ae922SBrian Foster if (whichfork == XFS_DATA_FORK && prealloc) 4172974ae922SBrian Foster xfs_inode_set_eofblocks_tag(ip); 4173974ae922SBrian Foster if (whichfork == XFS_COW_FORK && (prealloc || aoff < off || alen > len)) 4174974ae922SBrian Foster xfs_inode_set_cowblocks_tag(ip); 4175974ae922SBrian Foster 417630f712c9SDave Chinner return 0; 417730f712c9SDave Chinner 417830f712c9SDave Chinner out_unreserve_blocks: 417930f712c9SDave Chinner if (rt) 4180bab98bbeSDave Chinner xfs_mod_frextents(mp, extsz); 418130f712c9SDave Chinner else 41820d485adaSDave Chinner xfs_mod_fdblocks(mp, alen, false); 418330f712c9SDave Chinner out_unreserve_quota: 418430f712c9SDave Chinner if (XFS_IS_QUOTA_ON(mp)) 418530f712c9SDave Chinner xfs_trans_unreserve_quota_nblks(NULL, ip, (long)alen, 0, rt ? 418630f712c9SDave Chinner XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 418730f712c9SDave Chinner return error; 418830f712c9SDave Chinner } 418930f712c9SDave Chinner 41907f8a058fSDave Chinner static int 41917f8a058fSDave Chinner xfs_bmapi_allocate( 419230f712c9SDave Chinner struct xfs_bmalloca *bma) 419330f712c9SDave Chinner { 419430f712c9SDave Chinner struct xfs_mount *mp = bma->ip->i_mount; 419560b4984fSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(bma->flags); 419630f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 419730f712c9SDave Chinner int tmp_logflags = 0; 419830f712c9SDave Chinner int error; 419930f712c9SDave Chinner 420030f712c9SDave Chinner ASSERT(bma->length > 0); 420130f712c9SDave Chinner 420230f712c9SDave Chinner /* 420330f712c9SDave Chinner * For the wasdelay case, we could also just allocate the stuff asked 420430f712c9SDave Chinner * for in this bmap call but that wouldn't be as good. 420530f712c9SDave Chinner */ 420630f712c9SDave Chinner if (bma->wasdel) { 420730f712c9SDave Chinner bma->length = (xfs_extlen_t)bma->got.br_blockcount; 420830f712c9SDave Chinner bma->offset = bma->got.br_startoff; 42090e8d630bSChristoph Hellwig if (bma->idx) { 421030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), 421130f712c9SDave Chinner &bma->prev); 421230f712c9SDave Chinner } 421330f712c9SDave Chinner } else { 421430f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN); 421530f712c9SDave Chinner if (!bma->eof) 421630f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, 421730f712c9SDave Chinner bma->got.br_startoff - bma->offset); 421830f712c9SDave Chinner } 421930f712c9SDave Chinner 422030f712c9SDave Chinner /* 4221292378edSDave Chinner * Set the data type being allocated. For the data fork, the first data 4222292378edSDave Chinner * in the file is treated differently to all other allocations. For the 4223292378edSDave Chinner * attribute fork, we only need to ensure the allocated range is not on 4224292378edSDave Chinner * the busy list. 422530f712c9SDave Chinner */ 422630f712c9SDave Chinner if (!(bma->flags & XFS_BMAPI_METADATA)) { 4227292378edSDave Chinner bma->datatype = XFS_ALLOC_NOBUSY; 4228292378edSDave Chinner if (whichfork == XFS_DATA_FORK) { 4229292378edSDave Chinner if (bma->offset == 0) 4230292378edSDave Chinner bma->datatype |= XFS_ALLOC_INITIAL_USER_DATA; 4231292378edSDave Chinner else 4232292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA; 4233292378edSDave Chinner } 42343fbbbea3SDave Chinner if (bma->flags & XFS_BMAPI_ZERO) 4235292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA_ZERO; 423630f712c9SDave Chinner } 423730f712c9SDave Chinner 423830f712c9SDave Chinner bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1; 423930f712c9SDave Chinner 424030f712c9SDave Chinner /* 424130f712c9SDave Chinner * Only want to do the alignment at the eof if it is userdata and 424230f712c9SDave Chinner * allocation length is larger than a stripe unit. 424330f712c9SDave Chinner */ 424430f712c9SDave Chinner if (mp->m_dalign && bma->length >= mp->m_dalign && 424530f712c9SDave Chinner !(bma->flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) { 424630f712c9SDave Chinner error = xfs_bmap_isaeof(bma, whichfork); 424730f712c9SDave Chinner if (error) 424830f712c9SDave Chinner return error; 424930f712c9SDave Chinner } 425030f712c9SDave Chinner 425130f712c9SDave Chinner error = xfs_bmap_alloc(bma); 425230f712c9SDave Chinner if (error) 425330f712c9SDave Chinner return error; 425430f712c9SDave Chinner 425530f712c9SDave Chinner if (bma->cur) 425630f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 425730f712c9SDave Chinner if (bma->blkno == NULLFSBLOCK) 425830f712c9SDave Chinner return 0; 425930f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 426030f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork); 426130f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 42622c3234d1SDarrick J. Wong bma->cur->bc_private.b.dfops = bma->dfops; 426330f712c9SDave Chinner } 426430f712c9SDave Chinner /* 426530f712c9SDave Chinner * Bump the number of extents we've allocated 426630f712c9SDave Chinner * in this call. 426730f712c9SDave Chinner */ 426830f712c9SDave Chinner bma->nallocs++; 426930f712c9SDave Chinner 427030f712c9SDave Chinner if (bma->cur) 427130f712c9SDave Chinner bma->cur->bc_private.b.flags = 427230f712c9SDave Chinner bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 427330f712c9SDave Chinner 427430f712c9SDave Chinner bma->got.br_startoff = bma->offset; 427530f712c9SDave Chinner bma->got.br_startblock = bma->blkno; 427630f712c9SDave Chinner bma->got.br_blockcount = bma->length; 427730f712c9SDave Chinner bma->got.br_state = XFS_EXT_NORM; 427830f712c9SDave Chinner 427930f712c9SDave Chinner /* 428005a630d7SDarrick J. Wong * In the data fork, a wasdelay extent has been initialized, so 428105a630d7SDarrick J. Wong * shouldn't be flagged as unwritten. 428205a630d7SDarrick J. Wong * 428305a630d7SDarrick J. Wong * For the cow fork, however, we convert delalloc reservations 428405a630d7SDarrick J. Wong * (extents allocated for speculative preallocation) to 428505a630d7SDarrick J. Wong * allocated unwritten extents, and only convert the unwritten 428605a630d7SDarrick J. Wong * extents to real extents when we're about to write the data. 428730f712c9SDave Chinner */ 428805a630d7SDarrick J. Wong if ((!bma->wasdel || (bma->flags & XFS_BMAPI_COWFORK)) && 428905a630d7SDarrick J. Wong (bma->flags & XFS_BMAPI_PREALLOC) && 429030f712c9SDave Chinner xfs_sb_version_hasextflgbit(&mp->m_sb)) 429130f712c9SDave Chinner bma->got.br_state = XFS_EXT_UNWRITTEN; 429230f712c9SDave Chinner 429330f712c9SDave Chinner if (bma->wasdel) 429460b4984fSDarrick J. Wong error = xfs_bmap_add_extent_delay_real(bma, whichfork); 429530f712c9SDave Chinner else 42966d04558fSChristoph Hellwig error = xfs_bmap_add_extent_hole_real(bma->tp, bma->ip, 42976d04558fSChristoph Hellwig whichfork, &bma->idx, &bma->cur, &bma->got, 42986d04558fSChristoph Hellwig bma->firstblock, bma->dfops, &bma->logflags); 429930f712c9SDave Chinner 430030f712c9SDave Chinner bma->logflags |= tmp_logflags; 430130f712c9SDave Chinner if (error) 430230f712c9SDave Chinner return error; 430330f712c9SDave Chinner 430430f712c9SDave Chinner /* 430530f712c9SDave Chinner * Update our extent pointer, given that xfs_bmap_add_extent_delay_real 430630f712c9SDave Chinner * or xfs_bmap_add_extent_hole_real might have merged it into one of 430730f712c9SDave Chinner * the neighbouring ones. 430830f712c9SDave Chinner */ 430930f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got); 431030f712c9SDave Chinner 431130f712c9SDave Chinner ASSERT(bma->got.br_startoff <= bma->offset); 431230f712c9SDave Chinner ASSERT(bma->got.br_startoff + bma->got.br_blockcount >= 431330f712c9SDave Chinner bma->offset + bma->length); 431430f712c9SDave Chinner ASSERT(bma->got.br_state == XFS_EXT_NORM || 431530f712c9SDave Chinner bma->got.br_state == XFS_EXT_UNWRITTEN); 431630f712c9SDave Chinner return 0; 431730f712c9SDave Chinner } 431830f712c9SDave Chinner 431930f712c9SDave Chinner STATIC int 432030f712c9SDave Chinner xfs_bmapi_convert_unwritten( 432130f712c9SDave Chinner struct xfs_bmalloca *bma, 432230f712c9SDave Chinner struct xfs_bmbt_irec *mval, 432330f712c9SDave Chinner xfs_filblks_t len, 432430f712c9SDave Chinner int flags) 432530f712c9SDave Chinner { 43263993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 432730f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 432830f712c9SDave Chinner int tmp_logflags = 0; 432930f712c9SDave Chinner int error; 433030f712c9SDave Chinner 433130f712c9SDave Chinner /* check if we need to do unwritten->real conversion */ 433230f712c9SDave Chinner if (mval->br_state == XFS_EXT_UNWRITTEN && 433330f712c9SDave Chinner (flags & XFS_BMAPI_PREALLOC)) 433430f712c9SDave Chinner return 0; 433530f712c9SDave Chinner 433630f712c9SDave Chinner /* check if we need to do real->unwritten conversion */ 433730f712c9SDave Chinner if (mval->br_state == XFS_EXT_NORM && 433830f712c9SDave Chinner (flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) != 433930f712c9SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) 434030f712c9SDave Chinner return 0; 434130f712c9SDave Chinner 434230f712c9SDave Chinner /* 434330f712c9SDave Chinner * Modify (by adding) the state flag, if writing. 434430f712c9SDave Chinner */ 434530f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 434630f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 434730f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp, 434830f712c9SDave Chinner bma->ip, whichfork); 434930f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 43502c3234d1SDarrick J. Wong bma->cur->bc_private.b.dfops = bma->dfops; 435130f712c9SDave Chinner } 435230f712c9SDave Chinner mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN) 435330f712c9SDave Chinner ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 435430f712c9SDave Chinner 43553fbbbea3SDave Chinner /* 43563fbbbea3SDave Chinner * Before insertion into the bmbt, zero the range being converted 43573fbbbea3SDave Chinner * if required. 43583fbbbea3SDave Chinner */ 43593fbbbea3SDave Chinner if (flags & XFS_BMAPI_ZERO) { 43603fbbbea3SDave Chinner error = xfs_zero_extent(bma->ip, mval->br_startblock, 43613fbbbea3SDave Chinner mval->br_blockcount); 43623fbbbea3SDave Chinner if (error) 43633fbbbea3SDave Chinner return error; 43643fbbbea3SDave Chinner } 43653fbbbea3SDave Chinner 436605a630d7SDarrick J. Wong error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, whichfork, 436705a630d7SDarrick J. Wong &bma->idx, &bma->cur, mval, bma->firstblock, bma->dfops, 436830f712c9SDave Chinner &tmp_logflags); 43692e588a46SBrian Foster /* 43702e588a46SBrian Foster * Log the inode core unconditionally in the unwritten extent conversion 43712e588a46SBrian Foster * path because the conversion might not have done so (e.g., if the 43722e588a46SBrian Foster * extent count hasn't changed). We need to make sure the inode is dirty 43732e588a46SBrian Foster * in the transaction for the sake of fsync(), even if nothing has 43742e588a46SBrian Foster * changed, because fsync() will not force the log for this transaction 43752e588a46SBrian Foster * unless it sees the inode pinned. 437605a630d7SDarrick J. Wong * 437705a630d7SDarrick J. Wong * Note: If we're only converting cow fork extents, there aren't 437805a630d7SDarrick J. Wong * any on-disk updates to make, so we don't need to log anything. 43792e588a46SBrian Foster */ 438005a630d7SDarrick J. Wong if (whichfork != XFS_COW_FORK) 43812e588a46SBrian Foster bma->logflags |= tmp_logflags | XFS_ILOG_CORE; 438230f712c9SDave Chinner if (error) 438330f712c9SDave Chinner return error; 438430f712c9SDave Chinner 438530f712c9SDave Chinner /* 438630f712c9SDave Chinner * Update our extent pointer, given that 438730f712c9SDave Chinner * xfs_bmap_add_extent_unwritten_real might have merged it into one 438830f712c9SDave Chinner * of the neighbouring ones. 438930f712c9SDave Chinner */ 439030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got); 439130f712c9SDave Chinner 439230f712c9SDave Chinner /* 439330f712c9SDave Chinner * We may have combined previously unwritten space with written space, 439430f712c9SDave Chinner * so generate another request. 439530f712c9SDave Chinner */ 439630f712c9SDave Chinner if (mval->br_blockcount < len) 43972451337dSDave Chinner return -EAGAIN; 439830f712c9SDave Chinner return 0; 439930f712c9SDave Chinner } 440030f712c9SDave Chinner 440130f712c9SDave Chinner /* 440230f712c9SDave Chinner * Map file blocks to filesystem blocks, and allocate blocks or convert the 440330f712c9SDave Chinner * extent state if necessary. Details behaviour is controlled by the flags 440430f712c9SDave Chinner * parameter. Only allocates blocks from a single allocation group, to avoid 440530f712c9SDave Chinner * locking problems. 440630f712c9SDave Chinner * 440730f712c9SDave Chinner * The returned value in "firstblock" from the first call in a transaction 440830f712c9SDave Chinner * must be remembered and presented to subsequent calls in "firstblock". 440930f712c9SDave Chinner * An upper bound for the number of blocks to be allocated is supplied to 441030f712c9SDave Chinner * the first call in "total"; if no allocation group has that many free 441130f712c9SDave Chinner * blocks then the call will fail (return NULLFSBLOCK in "firstblock"). 441230f712c9SDave Chinner */ 441330f712c9SDave Chinner int 441430f712c9SDave Chinner xfs_bmapi_write( 441530f712c9SDave Chinner struct xfs_trans *tp, /* transaction pointer */ 441630f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 441730f712c9SDave Chinner xfs_fileoff_t bno, /* starting file offs. mapped */ 441830f712c9SDave Chinner xfs_filblks_t len, /* length to map in file */ 441930f712c9SDave Chinner int flags, /* XFS_BMAPI_... */ 442030f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first allocated block 442130f712c9SDave Chinner controls a.g. for allocs */ 442230f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed */ 442330f712c9SDave Chinner struct xfs_bmbt_irec *mval, /* output: map values */ 442430f712c9SDave Chinner int *nmap, /* i/o: mval size/count */ 44252c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops) /* i/o: list extents to free */ 442630f712c9SDave Chinner { 442730f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 442830f712c9SDave Chinner struct xfs_ifork *ifp; 442930f712c9SDave Chinner struct xfs_bmalloca bma = { NULL }; /* args for xfs_bmap_alloc */ 443030f712c9SDave Chinner xfs_fileoff_t end; /* end of mapped file region */ 44312d58f6efSChristoph Hellwig bool eof = false; /* after the end of extents */ 443230f712c9SDave Chinner int error; /* error return */ 443330f712c9SDave Chinner int n; /* current extent index */ 443430f712c9SDave Chinner xfs_fileoff_t obno; /* old block number (offset) */ 443530f712c9SDave Chinner int whichfork; /* data or attr fork */ 443630f712c9SDave Chinner 443730f712c9SDave Chinner #ifdef DEBUG 443830f712c9SDave Chinner xfs_fileoff_t orig_bno; /* original block number value */ 443930f712c9SDave Chinner int orig_flags; /* original flags arg value */ 444030f712c9SDave Chinner xfs_filblks_t orig_len; /* original value of len arg */ 444130f712c9SDave Chinner struct xfs_bmbt_irec *orig_mval; /* original value of mval */ 444230f712c9SDave Chinner int orig_nmap; /* original value of *nmap */ 444330f712c9SDave Chinner 444430f712c9SDave Chinner orig_bno = bno; 444530f712c9SDave Chinner orig_len = len; 444630f712c9SDave Chinner orig_flags = flags; 444730f712c9SDave Chinner orig_mval = mval; 444830f712c9SDave Chinner orig_nmap = *nmap; 444930f712c9SDave Chinner #endif 445060b4984fSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 445130f712c9SDave Chinner 445230f712c9SDave Chinner ASSERT(*nmap >= 1); 445330f712c9SDave Chinner ASSERT(*nmap <= XFS_BMAP_MAX_NMAP); 445430f712c9SDave Chinner ASSERT(!(flags & XFS_BMAPI_IGSTATE)); 445505a630d7SDarrick J. Wong ASSERT(tp != NULL || 445605a630d7SDarrick J. Wong (flags & (XFS_BMAPI_CONVERT | XFS_BMAPI_COWFORK)) == 445705a630d7SDarrick J. Wong (XFS_BMAPI_CONVERT | XFS_BMAPI_COWFORK)); 445830f712c9SDave Chinner ASSERT(len > 0); 445930f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL); 446030f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 44616ebd5a44SChristoph Hellwig ASSERT(!(flags & XFS_BMAPI_REMAP)); 446230f712c9SDave Chinner 44633fbbbea3SDave Chinner /* zeroing is for currently only for data extents, not metadata */ 44643fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) != 44653fbbbea3SDave Chinner (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)); 44663fbbbea3SDave Chinner /* 44673fbbbea3SDave Chinner * we can allocate unwritten extents or pre-zero allocated blocks, 44683fbbbea3SDave Chinner * but it makes no sense to do both at once. This would result in 44693fbbbea3SDave Chinner * zeroing the unwritten extent twice, but it still being an 44703fbbbea3SDave Chinner * unwritten extent.... 44713fbbbea3SDave Chinner */ 44723fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) != 44733fbbbea3SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)); 44743fbbbea3SDave Chinner 447530f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 447630f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 447730f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 447830f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 447930f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_write", XFS_ERRLEVEL_LOW, mp); 44802451337dSDave Chinner return -EFSCORRUPTED; 448130f712c9SDave Chinner } 448230f712c9SDave Chinner 448330f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 44842451337dSDave Chinner return -EIO; 448530f712c9SDave Chinner 448630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 448730f712c9SDave Chinner 4488ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapw); 448930f712c9SDave Chinner 449030f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 449130f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE) 449230f712c9SDave Chinner bma.minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1; 449330f712c9SDave Chinner else 449430f712c9SDave Chinner bma.minleft = 1; 449530f712c9SDave Chinner } else { 449630f712c9SDave Chinner bma.minleft = 0; 449730f712c9SDave Chinner } 449830f712c9SDave Chinner 449930f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 450030f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 450130f712c9SDave Chinner if (error) 450230f712c9SDave Chinner goto error0; 450330f712c9SDave Chinner } 450430f712c9SDave Chinner 450530f712c9SDave Chinner n = 0; 450630f712c9SDave Chinner end = bno + len; 450730f712c9SDave Chinner obno = bno; 450830f712c9SDave Chinner 45092d58f6efSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &bma.idx, &bma.got)) 45102d58f6efSChristoph Hellwig eof = true; 45112d58f6efSChristoph Hellwig if (!xfs_iext_get_extent(ifp, bma.idx - 1, &bma.prev)) 45122d58f6efSChristoph Hellwig bma.prev.br_startoff = NULLFILEOFF; 451330f712c9SDave Chinner bma.tp = tp; 451430f712c9SDave Chinner bma.ip = ip; 451530f712c9SDave Chinner bma.total = total; 4516292378edSDave Chinner bma.datatype = 0; 45172c3234d1SDarrick J. Wong bma.dfops = dfops; 451830f712c9SDave Chinner bma.firstblock = firstblock; 451930f712c9SDave Chinner 452030f712c9SDave Chinner while (bno < end && n < *nmap) { 4521d2b3964aSChristoph Hellwig bool need_alloc = false, wasdelay = false; 452230f712c9SDave Chinner 4523d2b3964aSChristoph Hellwig /* in hole or beyoned EOF? */ 4524d2b3964aSChristoph Hellwig if (eof || bma.got.br_startoff > bno) { 4525d2b3964aSChristoph Hellwig if (flags & XFS_BMAPI_DELALLOC) { 4526d2b3964aSChristoph Hellwig /* 4527d2b3964aSChristoph Hellwig * For the COW fork we can reasonably get a 4528d2b3964aSChristoph Hellwig * request for converting an extent that races 4529d2b3964aSChristoph Hellwig * with other threads already having converted 4530d2b3964aSChristoph Hellwig * part of it, as there converting COW to 4531d2b3964aSChristoph Hellwig * regular blocks is not protected using the 4532d2b3964aSChristoph Hellwig * IOLOCK. 4533d2b3964aSChristoph Hellwig */ 4534d2b3964aSChristoph Hellwig ASSERT(flags & XFS_BMAPI_COWFORK); 4535d2b3964aSChristoph Hellwig if (!(flags & XFS_BMAPI_COWFORK)) { 4536d2b3964aSChristoph Hellwig error = -EIO; 4537d2b3964aSChristoph Hellwig goto error0; 4538d2b3964aSChristoph Hellwig } 4539d2b3964aSChristoph Hellwig 4540d2b3964aSChristoph Hellwig if (eof || bno >= end) 4541d2b3964aSChristoph Hellwig break; 4542d2b3964aSChristoph Hellwig } else { 4543d2b3964aSChristoph Hellwig need_alloc = true; 4544d2b3964aSChristoph Hellwig } 45456ebd5a44SChristoph Hellwig } else if (isnullstartblock(bma.got.br_startblock)) { 4546d2b3964aSChristoph Hellwig wasdelay = true; 4547d2b3964aSChristoph Hellwig } 4548f65306eaSDarrick J. Wong 4549f65306eaSDarrick J. Wong /* 455030f712c9SDave Chinner * First, deal with the hole before the allocated space 455130f712c9SDave Chinner * that we found, if any. 455230f712c9SDave Chinner */ 4553d2b3964aSChristoph Hellwig if (need_alloc || wasdelay) { 455430f712c9SDave Chinner bma.eof = eof; 455530f712c9SDave Chinner bma.conv = !!(flags & XFS_BMAPI_CONVERT); 455630f712c9SDave Chinner bma.wasdel = wasdelay; 455730f712c9SDave Chinner bma.offset = bno; 455830f712c9SDave Chinner bma.flags = flags; 455930f712c9SDave Chinner 456030f712c9SDave Chinner /* 456130f712c9SDave Chinner * There's a 32/64 bit type mismatch between the 456230f712c9SDave Chinner * allocation length request (which can be 64 bits in 456330f712c9SDave Chinner * length) and the bma length request, which is 456430f712c9SDave Chinner * xfs_extlen_t and therefore 32 bits. Hence we have to 456530f712c9SDave Chinner * check for 32-bit overflows and handle them here. 456630f712c9SDave Chinner */ 456730f712c9SDave Chinner if (len > (xfs_filblks_t)MAXEXTLEN) 456830f712c9SDave Chinner bma.length = MAXEXTLEN; 456930f712c9SDave Chinner else 457030f712c9SDave Chinner bma.length = len; 457130f712c9SDave Chinner 457230f712c9SDave Chinner ASSERT(len > 0); 457330f712c9SDave Chinner ASSERT(bma.length > 0); 457430f712c9SDave Chinner error = xfs_bmapi_allocate(&bma); 457530f712c9SDave Chinner if (error) 457630f712c9SDave Chinner goto error0; 457730f712c9SDave Chinner if (bma.blkno == NULLFSBLOCK) 457830f712c9SDave Chinner break; 4579174edb0eSDarrick J. Wong 4580174edb0eSDarrick J. Wong /* 4581174edb0eSDarrick J. Wong * If this is a CoW allocation, record the data in 4582174edb0eSDarrick J. Wong * the refcount btree for orphan recovery. 4583174edb0eSDarrick J. Wong */ 4584174edb0eSDarrick J. Wong if (whichfork == XFS_COW_FORK) { 4585174edb0eSDarrick J. Wong error = xfs_refcount_alloc_cow_extent(mp, dfops, 4586174edb0eSDarrick J. Wong bma.blkno, bma.length); 4587174edb0eSDarrick J. Wong if (error) 4588174edb0eSDarrick J. Wong goto error0; 4589174edb0eSDarrick J. Wong } 459030f712c9SDave Chinner } 459130f712c9SDave Chinner 459230f712c9SDave Chinner /* Deal with the allocated space we found. */ 459330f712c9SDave Chinner xfs_bmapi_trim_map(mval, &bma.got, &bno, len, obno, 459430f712c9SDave Chinner end, n, flags); 459530f712c9SDave Chinner 459630f712c9SDave Chinner /* Execute unwritten extent conversion if necessary */ 459730f712c9SDave Chinner error = xfs_bmapi_convert_unwritten(&bma, mval, len, flags); 45982451337dSDave Chinner if (error == -EAGAIN) 459930f712c9SDave Chinner continue; 460030f712c9SDave Chinner if (error) 460130f712c9SDave Chinner goto error0; 460230f712c9SDave Chinner 460330f712c9SDave Chinner /* update the extent map to return */ 460430f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 460530f712c9SDave Chinner 460630f712c9SDave Chinner /* 460730f712c9SDave Chinner * If we're done, stop now. Stop when we've allocated 460830f712c9SDave Chinner * XFS_BMAP_MAX_NMAP extents no matter what. Otherwise 460930f712c9SDave Chinner * the transaction may get too big. 461030f712c9SDave Chinner */ 461130f712c9SDave Chinner if (bno >= end || n >= *nmap || bma.nallocs >= *nmap) 461230f712c9SDave Chinner break; 461330f712c9SDave Chinner 461430f712c9SDave Chinner /* Else go on to the next record. */ 461530f712c9SDave Chinner bma.prev = bma.got; 46162d58f6efSChristoph Hellwig if (!xfs_iext_get_extent(ifp, ++bma.idx, &bma.got)) 46172d58f6efSChristoph Hellwig eof = true; 461830f712c9SDave Chinner } 461930f712c9SDave Chinner *nmap = n; 462030f712c9SDave Chinner 462130f712c9SDave Chinner /* 462230f712c9SDave Chinner * Transform from btree to extents, give it cur. 462330f712c9SDave Chinner */ 462430f712c9SDave Chinner if (xfs_bmap_wants_extents(ip, whichfork)) { 462530f712c9SDave Chinner int tmp_logflags = 0; 462630f712c9SDave Chinner 462730f712c9SDave Chinner ASSERT(bma.cur); 462830f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, bma.cur, 462930f712c9SDave Chinner &tmp_logflags, whichfork); 463030f712c9SDave Chinner bma.logflags |= tmp_logflags; 463130f712c9SDave Chinner if (error) 463230f712c9SDave Chinner goto error0; 463330f712c9SDave Chinner } 463430f712c9SDave Chinner 463530f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE || 463630f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 463730f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork)); 463830f712c9SDave Chinner error = 0; 463930f712c9SDave Chinner error0: 464030f712c9SDave Chinner /* 464130f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 464230f712c9SDave Chinner * logging the extent records if we've converted to btree format. 464330f712c9SDave Chinner */ 464430f712c9SDave Chinner if ((bma.logflags & xfs_ilog_fext(whichfork)) && 464530f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 464630f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fext(whichfork); 464730f712c9SDave Chinner else if ((bma.logflags & xfs_ilog_fbroot(whichfork)) && 464830f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 464930f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fbroot(whichfork); 465030f712c9SDave Chinner /* 465130f712c9SDave Chinner * Log whatever the flags say, even if error. Otherwise we might miss 465230f712c9SDave Chinner * detecting a case where the data is changed, there's an error, 465330f712c9SDave Chinner * and it's not logged so we don't shutdown when we should. 465430f712c9SDave Chinner */ 465530f712c9SDave Chinner if (bma.logflags) 465630f712c9SDave Chinner xfs_trans_log_inode(tp, ip, bma.logflags); 465730f712c9SDave Chinner 465830f712c9SDave Chinner if (bma.cur) { 465930f712c9SDave Chinner if (!error) { 466030f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 4661410d17f6SChristoph Hellwig XFS_FSB_TO_AGNO(mp, *firstblock) <= 466230f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, 4663410d17f6SChristoph Hellwig bma.cur->bc_private.b.firstblock)); 466430f712c9SDave Chinner *firstblock = bma.cur->bc_private.b.firstblock; 466530f712c9SDave Chinner } 466630f712c9SDave Chinner xfs_btree_del_cursor(bma.cur, 466730f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 466830f712c9SDave Chinner } 466930f712c9SDave Chinner if (!error) 467030f712c9SDave Chinner xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval, 467130f712c9SDave Chinner orig_nmap, *nmap); 467230f712c9SDave Chinner return error; 467330f712c9SDave Chinner } 467430f712c9SDave Chinner 46756ebd5a44SChristoph Hellwig static int 46766ebd5a44SChristoph Hellwig xfs_bmapi_remap( 46776ebd5a44SChristoph Hellwig struct xfs_trans *tp, 46786ebd5a44SChristoph Hellwig struct xfs_inode *ip, 46796ebd5a44SChristoph Hellwig xfs_fileoff_t bno, 46806ebd5a44SChristoph Hellwig xfs_filblks_t len, 46816ebd5a44SChristoph Hellwig xfs_fsblock_t startblock, 46826ebd5a44SChristoph Hellwig struct xfs_defer_ops *dfops) 46836ebd5a44SChristoph Hellwig { 46846ebd5a44SChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 46856ebd5a44SChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); 46866ebd5a44SChristoph Hellwig struct xfs_btree_cur *cur = NULL; 46876ebd5a44SChristoph Hellwig xfs_fsblock_t firstblock = NULLFSBLOCK; 46886ebd5a44SChristoph Hellwig struct xfs_bmbt_irec got; 46896ebd5a44SChristoph Hellwig xfs_extnum_t idx; 46906ebd5a44SChristoph Hellwig int logflags = 0, error; 46916ebd5a44SChristoph Hellwig 46926ebd5a44SChristoph Hellwig ASSERT(len > 0); 46936ebd5a44SChristoph Hellwig ASSERT(len <= (xfs_filblks_t)MAXEXTLEN); 46946ebd5a44SChristoph Hellwig ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 46956ebd5a44SChristoph Hellwig 46966ebd5a44SChristoph Hellwig if (unlikely(XFS_TEST_ERROR( 46976ebd5a44SChristoph Hellwig (XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_EXTENTS && 46986ebd5a44SChristoph Hellwig XFS_IFORK_FORMAT(ip, XFS_DATA_FORK) != XFS_DINODE_FMT_BTREE), 46996ebd5a44SChristoph Hellwig mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 47006ebd5a44SChristoph Hellwig XFS_ERROR_REPORT("xfs_bmapi_remap", XFS_ERRLEVEL_LOW, mp); 47016ebd5a44SChristoph Hellwig return -EFSCORRUPTED; 47026ebd5a44SChristoph Hellwig } 47036ebd5a44SChristoph Hellwig 47046ebd5a44SChristoph Hellwig if (XFS_FORCED_SHUTDOWN(mp)) 47056ebd5a44SChristoph Hellwig return -EIO; 47066ebd5a44SChristoph Hellwig 47076ebd5a44SChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 47086ebd5a44SChristoph Hellwig error = xfs_iread_extents(NULL, ip, XFS_DATA_FORK); 47096ebd5a44SChristoph Hellwig if (error) 47106ebd5a44SChristoph Hellwig return error; 47116ebd5a44SChristoph Hellwig } 47126ebd5a44SChristoph Hellwig 47136ebd5a44SChristoph Hellwig if (xfs_iext_lookup_extent(ip, ifp, bno, &idx, &got)) { 47146ebd5a44SChristoph Hellwig /* make sure we only reflink into a hole. */ 47156ebd5a44SChristoph Hellwig ASSERT(got.br_startoff > bno); 47166ebd5a44SChristoph Hellwig ASSERT(got.br_startoff - bno >= len); 47176ebd5a44SChristoph Hellwig } 47186ebd5a44SChristoph Hellwig 4719bf8eadbaSChristoph Hellwig ip->i_d.di_nblocks += len; 4720bf8eadbaSChristoph Hellwig xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 47216ebd5a44SChristoph Hellwig 47226ebd5a44SChristoph Hellwig if (ifp->if_flags & XFS_IFBROOT) { 47236ebd5a44SChristoph Hellwig cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); 47246ebd5a44SChristoph Hellwig cur->bc_private.b.firstblock = firstblock; 47256ebd5a44SChristoph Hellwig cur->bc_private.b.dfops = dfops; 47266ebd5a44SChristoph Hellwig cur->bc_private.b.flags = 0; 47276ebd5a44SChristoph Hellwig } 47286ebd5a44SChristoph Hellwig 47296ebd5a44SChristoph Hellwig got.br_startoff = bno; 47306ebd5a44SChristoph Hellwig got.br_startblock = startblock; 47316ebd5a44SChristoph Hellwig got.br_blockcount = len; 47326ebd5a44SChristoph Hellwig got.br_state = XFS_EXT_NORM; 47336ebd5a44SChristoph Hellwig 47346ebd5a44SChristoph Hellwig error = xfs_bmap_add_extent_hole_real(tp, ip, XFS_DATA_FORK, &idx, &cur, 47356ebd5a44SChristoph Hellwig &got, &firstblock, dfops, &logflags); 47366ebd5a44SChristoph Hellwig if (error) 47376ebd5a44SChristoph Hellwig goto error0; 47386ebd5a44SChristoph Hellwig 47396ebd5a44SChristoph Hellwig if (xfs_bmap_wants_extents(ip, XFS_DATA_FORK)) { 47406ebd5a44SChristoph Hellwig int tmp_logflags = 0; 47416ebd5a44SChristoph Hellwig 47426ebd5a44SChristoph Hellwig error = xfs_bmap_btree_to_extents(tp, ip, cur, 47436ebd5a44SChristoph Hellwig &tmp_logflags, XFS_DATA_FORK); 47446ebd5a44SChristoph Hellwig logflags |= tmp_logflags; 47456ebd5a44SChristoph Hellwig } 47466ebd5a44SChristoph Hellwig 47476ebd5a44SChristoph Hellwig error0: 47486ebd5a44SChristoph Hellwig if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) 47496ebd5a44SChristoph Hellwig logflags &= ~XFS_ILOG_DEXT; 47506ebd5a44SChristoph Hellwig else if (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) 47516ebd5a44SChristoph Hellwig logflags &= ~XFS_ILOG_DBROOT; 47526ebd5a44SChristoph Hellwig 47536ebd5a44SChristoph Hellwig if (logflags) 47546ebd5a44SChristoph Hellwig xfs_trans_log_inode(tp, ip, logflags); 47556ebd5a44SChristoph Hellwig if (cur) { 47566ebd5a44SChristoph Hellwig xfs_btree_del_cursor(cur, 47576ebd5a44SChristoph Hellwig error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 47586ebd5a44SChristoph Hellwig } 47596ebd5a44SChristoph Hellwig return error; 47606ebd5a44SChristoph Hellwig } 47616ebd5a44SChristoph Hellwig 476230f712c9SDave Chinner /* 4763a9bd24acSBrian Foster * When a delalloc extent is split (e.g., due to a hole punch), the original 4764a9bd24acSBrian Foster * indlen reservation must be shared across the two new extents that are left 4765a9bd24acSBrian Foster * behind. 4766a9bd24acSBrian Foster * 4767a9bd24acSBrian Foster * Given the original reservation and the worst case indlen for the two new 4768a9bd24acSBrian Foster * extents (as calculated by xfs_bmap_worst_indlen()), split the original 4769d34999c9SBrian Foster * reservation fairly across the two new extents. If necessary, steal available 4770d34999c9SBrian Foster * blocks from a deleted extent to make up a reservation deficiency (e.g., if 4771d34999c9SBrian Foster * ores == 1). The number of stolen blocks is returned. The availability and 4772d34999c9SBrian Foster * subsequent accounting of stolen blocks is the responsibility of the caller. 4773a9bd24acSBrian Foster */ 4774d34999c9SBrian Foster static xfs_filblks_t 4775a9bd24acSBrian Foster xfs_bmap_split_indlen( 4776a9bd24acSBrian Foster xfs_filblks_t ores, /* original res. */ 4777a9bd24acSBrian Foster xfs_filblks_t *indlen1, /* ext1 worst indlen */ 4778d34999c9SBrian Foster xfs_filblks_t *indlen2, /* ext2 worst indlen */ 4779d34999c9SBrian Foster xfs_filblks_t avail) /* stealable blocks */ 4780a9bd24acSBrian Foster { 4781a9bd24acSBrian Foster xfs_filblks_t len1 = *indlen1; 4782a9bd24acSBrian Foster xfs_filblks_t len2 = *indlen2; 4783a9bd24acSBrian Foster xfs_filblks_t nres = len1 + len2; /* new total res. */ 4784d34999c9SBrian Foster xfs_filblks_t stolen = 0; 478575d65361SBrian Foster xfs_filblks_t resfactor; 4786a9bd24acSBrian Foster 4787a9bd24acSBrian Foster /* 4788d34999c9SBrian Foster * Steal as many blocks as we can to try and satisfy the worst case 4789d34999c9SBrian Foster * indlen for both new extents. 4790d34999c9SBrian Foster */ 479175d65361SBrian Foster if (ores < nres && avail) 479275d65361SBrian Foster stolen = XFS_FILBLKS_MIN(nres - ores, avail); 479375d65361SBrian Foster ores += stolen; 479475d65361SBrian Foster 479575d65361SBrian Foster /* nothing else to do if we've satisfied the new reservation */ 479675d65361SBrian Foster if (ores >= nres) 479775d65361SBrian Foster return stolen; 4798d34999c9SBrian Foster 4799d34999c9SBrian Foster /* 480075d65361SBrian Foster * We can't meet the total required reservation for the two extents. 480175d65361SBrian Foster * Calculate the percent of the overall shortage between both extents 480275d65361SBrian Foster * and apply this percentage to each of the requested indlen values. 480375d65361SBrian Foster * This distributes the shortage fairly and reduces the chances that one 480475d65361SBrian Foster * of the two extents is left with nothing when extents are repeatedly 480575d65361SBrian Foster * split. 4806a9bd24acSBrian Foster */ 480775d65361SBrian Foster resfactor = (ores * 100); 480875d65361SBrian Foster do_div(resfactor, nres); 480975d65361SBrian Foster len1 *= resfactor; 481075d65361SBrian Foster do_div(len1, 100); 481175d65361SBrian Foster len2 *= resfactor; 481275d65361SBrian Foster do_div(len2, 100); 481375d65361SBrian Foster ASSERT(len1 + len2 <= ores); 481475d65361SBrian Foster ASSERT(len1 < *indlen1 && len2 < *indlen2); 481575d65361SBrian Foster 481675d65361SBrian Foster /* 481775d65361SBrian Foster * Hand out the remainder to each extent. If one of the two reservations 481875d65361SBrian Foster * is zero, we want to make sure that one gets a block first. The loop 481975d65361SBrian Foster * below starts with len1, so hand len2 a block right off the bat if it 482075d65361SBrian Foster * is zero. 482175d65361SBrian Foster */ 482275d65361SBrian Foster ores -= (len1 + len2); 482375d65361SBrian Foster ASSERT((*indlen1 - len1) + (*indlen2 - len2) >= ores); 482475d65361SBrian Foster if (ores && !len2 && *indlen2) { 482575d65361SBrian Foster len2++; 482675d65361SBrian Foster ores--; 4827a9bd24acSBrian Foster } 482875d65361SBrian Foster while (ores) { 482975d65361SBrian Foster if (len1 < *indlen1) { 483075d65361SBrian Foster len1++; 483175d65361SBrian Foster ores--; 483275d65361SBrian Foster } 483375d65361SBrian Foster if (!ores) 4834a9bd24acSBrian Foster break; 483575d65361SBrian Foster if (len2 < *indlen2) { 483675d65361SBrian Foster len2++; 483775d65361SBrian Foster ores--; 4838a9bd24acSBrian Foster } 4839a9bd24acSBrian Foster } 4840a9bd24acSBrian Foster 4841a9bd24acSBrian Foster *indlen1 = len1; 4842a9bd24acSBrian Foster *indlen2 = len2; 4843d34999c9SBrian Foster 4844d34999c9SBrian Foster return stolen; 4845a9bd24acSBrian Foster } 4846a9bd24acSBrian Foster 4847fa5c836cSChristoph Hellwig int 4848fa5c836cSChristoph Hellwig xfs_bmap_del_extent_delay( 4849fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4850fa5c836cSChristoph Hellwig int whichfork, 4851fa5c836cSChristoph Hellwig xfs_extnum_t *idx, 4852fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4853fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4854fa5c836cSChristoph Hellwig { 4855fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4856fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 4857fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4858fa5c836cSChristoph Hellwig int64_t da_old, da_new, da_diff = 0; 4859fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4860fa5c836cSChristoph Hellwig xfs_filblks_t got_indlen, new_indlen, stolen; 4861fa5c836cSChristoph Hellwig int error = 0, state = 0; 4862fa5c836cSChristoph Hellwig bool isrt; 4863fa5c836cSChristoph Hellwig 4864fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4865fa5c836cSChristoph Hellwig 4866fa5c836cSChristoph Hellwig isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 4867fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4868fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4869fa5c836cSChristoph Hellwig da_old = startblockval(got->br_startblock); 4870fa5c836cSChristoph Hellwig da_new = 0; 4871fa5c836cSChristoph Hellwig 4872fa5c836cSChristoph Hellwig ASSERT(*idx >= 0); 48735d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 4874fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4875fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4876fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4877fa5c836cSChristoph Hellwig 4878fa5c836cSChristoph Hellwig if (isrt) { 48794f1adf33SEric Sandeen uint64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount); 4880fa5c836cSChristoph Hellwig 4881fa5c836cSChristoph Hellwig do_div(rtexts, mp->m_sb.sb_rextsize); 4882fa5c836cSChristoph Hellwig xfs_mod_frextents(mp, rtexts); 4883fa5c836cSChristoph Hellwig } 4884fa5c836cSChristoph Hellwig 4885fa5c836cSChristoph Hellwig /* 4886fa5c836cSChristoph Hellwig * Update the inode delalloc counter now and wait to update the 4887fa5c836cSChristoph Hellwig * sb counters as we might have to borrow some blocks for the 4888fa5c836cSChristoph Hellwig * indirect block accounting. 4889fa5c836cSChristoph Hellwig */ 48904fd29ec4SDarrick J. Wong error = xfs_trans_reserve_quota_nblks(NULL, ip, 48914fd29ec4SDarrick J. Wong -((long)del->br_blockcount), 0, 4892fa5c836cSChristoph Hellwig isrt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 48934fd29ec4SDarrick J. Wong if (error) 48944fd29ec4SDarrick J. Wong return error; 4895fa5c836cSChristoph Hellwig ip->i_delayed_blks -= del->br_blockcount; 4896fa5c836cSChristoph Hellwig 4897fa5c836cSChristoph Hellwig if (whichfork == XFS_COW_FORK) 4898fa5c836cSChristoph Hellwig state |= BMAP_COWFORK; 4899fa5c836cSChristoph Hellwig 4900fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 4901fa5c836cSChristoph Hellwig state |= BMAP_LEFT_CONTIG; 4902fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 4903fa5c836cSChristoph Hellwig state |= BMAP_RIGHT_CONTIG; 4904fa5c836cSChristoph Hellwig 4905fa5c836cSChristoph Hellwig switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 4906fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 4907fa5c836cSChristoph Hellwig /* 4908fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4909fa5c836cSChristoph Hellwig */ 4910fa5c836cSChristoph Hellwig xfs_iext_remove(ip, *idx, 1, state); 4911fa5c836cSChristoph Hellwig --*idx; 4912fa5c836cSChristoph Hellwig break; 4913fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG: 4914fa5c836cSChristoph Hellwig /* 4915fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4916fa5c836cSChristoph Hellwig */ 4917fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4918fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4919fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4920fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4921fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4922fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4923fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4924fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4925fa5c836cSChristoph Hellwig break; 4926fa5c836cSChristoph Hellwig case BMAP_RIGHT_CONTIG: 4927fa5c836cSChristoph Hellwig /* 4928fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4929fa5c836cSChristoph Hellwig */ 4930fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4931fa5c836cSChristoph Hellwig got->br_blockcount = got->br_blockcount - del->br_blockcount; 4932fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4933fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4934fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4935fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4936fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4937fa5c836cSChristoph Hellwig break; 4938fa5c836cSChristoph Hellwig case 0: 4939fa5c836cSChristoph Hellwig /* 4940fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4941fa5c836cSChristoph Hellwig * 4942fa5c836cSChristoph Hellwig * Distribute the original indlen reservation across the two new 4943fa5c836cSChristoph Hellwig * extents. Steal blocks from the deleted extent if necessary. 4944fa5c836cSChristoph Hellwig * Stealing blocks simply fudges the fdblocks accounting below. 4945fa5c836cSChristoph Hellwig * Warn if either of the new indlen reservations is zero as this 4946fa5c836cSChristoph Hellwig * can lead to delalloc problems. 4947fa5c836cSChristoph Hellwig */ 4948fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4949fa5c836cSChristoph Hellwig 4950fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4951fa5c836cSChristoph Hellwig got_indlen = xfs_bmap_worst_indlen(ip, got->br_blockcount); 4952fa5c836cSChristoph Hellwig 4953fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4954fa5c836cSChristoph Hellwig new_indlen = xfs_bmap_worst_indlen(ip, new.br_blockcount); 4955fa5c836cSChristoph Hellwig 4956fa5c836cSChristoph Hellwig WARN_ON_ONCE(!got_indlen || !new_indlen); 4957fa5c836cSChristoph Hellwig stolen = xfs_bmap_split_indlen(da_old, &got_indlen, &new_indlen, 4958fa5c836cSChristoph Hellwig del->br_blockcount); 4959fa5c836cSChristoph Hellwig 4960fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)got_indlen); 4961fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4962fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, 0, _THIS_IP_); 4963fa5c836cSChristoph Hellwig 4964fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4965fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4966fa5c836cSChristoph Hellwig new.br_startblock = nullstartblock((int)new_indlen); 4967fa5c836cSChristoph Hellwig 4968fa5c836cSChristoph Hellwig ++*idx; 4969fa5c836cSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, &new, state); 4970fa5c836cSChristoph Hellwig 4971fa5c836cSChristoph Hellwig da_new = got_indlen + new_indlen - stolen; 4972fa5c836cSChristoph Hellwig del->br_blockcount -= stolen; 4973fa5c836cSChristoph Hellwig break; 4974fa5c836cSChristoph Hellwig } 4975fa5c836cSChristoph Hellwig 4976fa5c836cSChristoph Hellwig ASSERT(da_old >= da_new); 4977fa5c836cSChristoph Hellwig da_diff = da_old - da_new; 4978fa5c836cSChristoph Hellwig if (!isrt) 4979fa5c836cSChristoph Hellwig da_diff += del->br_blockcount; 4980fa5c836cSChristoph Hellwig if (da_diff) 4981fa5c836cSChristoph Hellwig xfs_mod_fdblocks(mp, da_diff, false); 4982fa5c836cSChristoph Hellwig return error; 4983fa5c836cSChristoph Hellwig } 4984fa5c836cSChristoph Hellwig 4985fa5c836cSChristoph Hellwig void 4986fa5c836cSChristoph Hellwig xfs_bmap_del_extent_cow( 4987fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4988fa5c836cSChristoph Hellwig xfs_extnum_t *idx, 4989fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4990fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4991fa5c836cSChristoph Hellwig { 4992fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4993fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK); 4994fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4995fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4996fa5c836cSChristoph Hellwig int state = BMAP_COWFORK; 4997fa5c836cSChristoph Hellwig 4998fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4999fa5c836cSChristoph Hellwig 5000fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 5001fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 5002fa5c836cSChristoph Hellwig 5003fa5c836cSChristoph Hellwig ASSERT(*idx >= 0); 50045d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 5005fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 5006fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 5007fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 5008fa5c836cSChristoph Hellwig ASSERT(!isnullstartblock(got->br_startblock)); 5009fa5c836cSChristoph Hellwig 5010fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 5011fa5c836cSChristoph Hellwig state |= BMAP_LEFT_CONTIG; 5012fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 5013fa5c836cSChristoph Hellwig state |= BMAP_RIGHT_CONTIG; 5014fa5c836cSChristoph Hellwig 5015fa5c836cSChristoph Hellwig switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 5016fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 5017fa5c836cSChristoph Hellwig /* 5018fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 5019fa5c836cSChristoph Hellwig */ 5020fa5c836cSChristoph Hellwig xfs_iext_remove(ip, *idx, 1, state); 5021fa5c836cSChristoph Hellwig --*idx; 5022fa5c836cSChristoph Hellwig break; 5023fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG: 5024fa5c836cSChristoph Hellwig /* 5025fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 5026fa5c836cSChristoph Hellwig */ 5027fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 5028fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 5029fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 5030fa5c836cSChristoph Hellwig got->br_startblock = del->br_startblock + del->br_blockcount; 5031fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 5032fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 5033fa5c836cSChristoph Hellwig break; 5034fa5c836cSChristoph Hellwig case BMAP_RIGHT_CONTIG: 5035fa5c836cSChristoph Hellwig /* 5036fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 5037fa5c836cSChristoph Hellwig */ 5038fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 5039fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 5040fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 5041fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 5042fa5c836cSChristoph Hellwig break; 5043fa5c836cSChristoph Hellwig case 0: 5044fa5c836cSChristoph Hellwig /* 5045fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 5046fa5c836cSChristoph Hellwig */ 5047fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 5048fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 5049fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 5050fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 5051fa5c836cSChristoph Hellwig 5052fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 5053fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 5054fa5c836cSChristoph Hellwig new.br_state = got->br_state; 5055fa5c836cSChristoph Hellwig new.br_startblock = del->br_startblock + del->br_blockcount; 5056fa5c836cSChristoph Hellwig 5057fa5c836cSChristoph Hellwig ++*idx; 5058fa5c836cSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, &new, state); 5059fa5c836cSChristoph Hellwig break; 5060fa5c836cSChristoph Hellwig } 5061fa5c836cSChristoph Hellwig } 5062fa5c836cSChristoph Hellwig 5063a9bd24acSBrian Foster /* 506430f712c9SDave Chinner * Called by xfs_bmapi to update file extent records and the btree 506530f712c9SDave Chinner * after removing space (or undoing a delayed allocation). 506630f712c9SDave Chinner */ 506730f712c9SDave Chinner STATIC int /* error */ 506830f712c9SDave Chinner xfs_bmap_del_extent( 506930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 507030f712c9SDave Chinner xfs_trans_t *tp, /* current transaction pointer */ 507130f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/delete */ 50722c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* list of extents to be freed */ 507330f712c9SDave Chinner xfs_btree_cur_t *cur, /* if null, not a btree */ 507430f712c9SDave Chinner xfs_bmbt_irec_t *del, /* data to remove from extents */ 507530f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 50764847acf8SDarrick J. Wong int whichfork, /* data or attr fork */ 50774847acf8SDarrick J. Wong int bflags) /* bmapi flags */ 507830f712c9SDave Chinner { 507930f712c9SDave Chinner xfs_filblks_t da_new; /* new delay-alloc indirect blocks */ 508030f712c9SDave Chinner xfs_filblks_t da_old; /* old delay-alloc indirect blocks */ 508130f712c9SDave Chinner xfs_fsblock_t del_endblock=0; /* first block past del */ 508230f712c9SDave Chinner xfs_fileoff_t del_endoff; /* first offset past del */ 508330f712c9SDave Chinner int delay; /* current block is delayed allocated */ 508430f712c9SDave Chinner int do_fx; /* free extent at end of routine */ 508530f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* current extent entry pointer */ 508630f712c9SDave Chinner int error; /* error return value */ 508730f712c9SDave Chinner int flags; /* inode logging flags */ 508830f712c9SDave Chinner xfs_bmbt_irec_t got; /* current extent entry */ 508930f712c9SDave Chinner xfs_fileoff_t got_endoff; /* first offset past got */ 509030f712c9SDave Chinner int i; /* temp state */ 509130f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 509230f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 509330f712c9SDave Chinner xfs_filblks_t nblks; /* quota/sb block count */ 509430f712c9SDave Chinner xfs_bmbt_irec_t new; /* new record to be inserted */ 509530f712c9SDave Chinner /* REFERENCED */ 509630f712c9SDave Chinner uint qfield; /* quota field to update */ 509730f712c9SDave Chinner xfs_filblks_t temp; /* for indirect length calculations */ 509830f712c9SDave Chinner xfs_filblks_t temp2; /* for indirect length calculations */ 509930f712c9SDave Chinner int state = 0; 510030f712c9SDave Chinner 5101ff6d6af2SBill O'Donnell mp = ip->i_mount; 5102ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_del_exlist); 510330f712c9SDave Chinner 510430f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 510530f712c9SDave Chinner state |= BMAP_ATTRFORK; 51063993baebSDarrick J. Wong else if (whichfork == XFS_COW_FORK) 51073993baebSDarrick J. Wong state |= BMAP_COWFORK; 510830f712c9SDave Chinner 510930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 51105d829300SEric Sandeen ASSERT((*idx >= 0) && (*idx < xfs_iext_count(ifp))); 511130f712c9SDave Chinner ASSERT(del->br_blockcount > 0); 511230f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, *idx); 511330f712c9SDave Chinner xfs_bmbt_get_all(ep, &got); 511430f712c9SDave Chinner ASSERT(got.br_startoff <= del->br_startoff); 511530f712c9SDave Chinner del_endoff = del->br_startoff + del->br_blockcount; 511630f712c9SDave Chinner got_endoff = got.br_startoff + got.br_blockcount; 511730f712c9SDave Chinner ASSERT(got_endoff >= del_endoff); 511830f712c9SDave Chinner delay = isnullstartblock(got.br_startblock); 511930f712c9SDave Chinner ASSERT(isnullstartblock(del->br_startblock) == delay); 512030f712c9SDave Chinner flags = 0; 512130f712c9SDave Chinner qfield = 0; 512230f712c9SDave Chinner error = 0; 512330f712c9SDave Chinner /* 512430f712c9SDave Chinner * If deleting a real allocation, must free up the disk space. 512530f712c9SDave Chinner */ 512630f712c9SDave Chinner if (!delay) { 512730f712c9SDave Chinner flags = XFS_ILOG_CORE; 512830f712c9SDave Chinner /* 512930f712c9SDave Chinner * Realtime allocation. Free it and record di_nblocks update. 513030f712c9SDave Chinner */ 513130f712c9SDave Chinner if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) { 513230f712c9SDave Chinner xfs_fsblock_t bno; 513330f712c9SDave Chinner xfs_filblks_t len; 513430f712c9SDave Chinner 513530f712c9SDave Chinner ASSERT(do_mod(del->br_blockcount, 513630f712c9SDave Chinner mp->m_sb.sb_rextsize) == 0); 513730f712c9SDave Chinner ASSERT(do_mod(del->br_startblock, 513830f712c9SDave Chinner mp->m_sb.sb_rextsize) == 0); 513930f712c9SDave Chinner bno = del->br_startblock; 514030f712c9SDave Chinner len = del->br_blockcount; 514130f712c9SDave Chinner do_div(bno, mp->m_sb.sb_rextsize); 514230f712c9SDave Chinner do_div(len, mp->m_sb.sb_rextsize); 514330f712c9SDave Chinner error = xfs_rtfree_extent(tp, bno, (xfs_extlen_t)len); 514430f712c9SDave Chinner if (error) 514530f712c9SDave Chinner goto done; 514630f712c9SDave Chinner do_fx = 0; 514730f712c9SDave Chinner nblks = len * mp->m_sb.sb_rextsize; 514830f712c9SDave Chinner qfield = XFS_TRANS_DQ_RTBCOUNT; 514930f712c9SDave Chinner } 515030f712c9SDave Chinner /* 515130f712c9SDave Chinner * Ordinary allocation. 515230f712c9SDave Chinner */ 515330f712c9SDave Chinner else { 515430f712c9SDave Chinner do_fx = 1; 515530f712c9SDave Chinner nblks = del->br_blockcount; 515630f712c9SDave Chinner qfield = XFS_TRANS_DQ_BCOUNT; 515730f712c9SDave Chinner } 515830f712c9SDave Chinner /* 515930f712c9SDave Chinner * Set up del_endblock and cur for later. 516030f712c9SDave Chinner */ 516130f712c9SDave Chinner del_endblock = del->br_startblock + del->br_blockcount; 516230f712c9SDave Chinner if (cur) { 516330f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff, 516430f712c9SDave Chinner got.br_startblock, got.br_blockcount, 516530f712c9SDave Chinner &i))) 516630f712c9SDave Chinner goto done; 5167c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 516830f712c9SDave Chinner } 516930f712c9SDave Chinner da_old = da_new = 0; 517030f712c9SDave Chinner } else { 517130f712c9SDave Chinner da_old = startblockval(got.br_startblock); 517230f712c9SDave Chinner da_new = 0; 517330f712c9SDave Chinner nblks = 0; 517430f712c9SDave Chinner do_fx = 0; 517530f712c9SDave Chinner } 5176340785ccSDarrick J. Wong 517730f712c9SDave Chinner /* 517830f712c9SDave Chinner * Set flag value to use in switch statement. 517930f712c9SDave Chinner * Left-contig is 2, right-contig is 1. 518030f712c9SDave Chinner */ 518130f712c9SDave Chinner switch (((got.br_startoff == del->br_startoff) << 1) | 518230f712c9SDave Chinner (got_endoff == del_endoff)) { 518330f712c9SDave Chinner case 3: 518430f712c9SDave Chinner /* 518530f712c9SDave Chinner * Matches the whole extent. Delete the entry. 518630f712c9SDave Chinner */ 51874862cfe8SDarrick J. Wong trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 518830f712c9SDave Chinner xfs_iext_remove(ip, *idx, 1, 518930f712c9SDave Chinner whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0); 519030f712c9SDave Chinner --*idx; 519130f712c9SDave Chinner if (delay) 519230f712c9SDave Chinner break; 519330f712c9SDave Chinner 519430f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 519530f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 519630f712c9SDave Chinner flags |= XFS_ILOG_CORE; 519730f712c9SDave Chinner if (!cur) { 519830f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 519930f712c9SDave Chinner break; 520030f712c9SDave Chinner } 520130f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 520230f712c9SDave Chinner goto done; 5203c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 520430f712c9SDave Chinner break; 520530f712c9SDave Chinner 520630f712c9SDave Chinner case 2: 520730f712c9SDave Chinner /* 520830f712c9SDave Chinner * Deleting the first part of the extent. 520930f712c9SDave Chinner */ 521030f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 521130f712c9SDave Chinner xfs_bmbt_set_startoff(ep, del_endoff); 521230f712c9SDave Chinner temp = got.br_blockcount - del->br_blockcount; 521330f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 521430f712c9SDave Chinner if (delay) { 521530f712c9SDave Chinner temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 521630f712c9SDave Chinner da_old); 521730f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 521830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 521930f712c9SDave Chinner da_new = temp; 522030f712c9SDave Chinner break; 522130f712c9SDave Chinner } 522230f712c9SDave Chinner xfs_bmbt_set_startblock(ep, del_endblock); 522330f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 522430f712c9SDave Chinner if (!cur) { 522530f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 522630f712c9SDave Chinner break; 522730f712c9SDave Chinner } 522830f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, del_endoff, del_endblock, 522930f712c9SDave Chinner got.br_blockcount - del->br_blockcount, 523030f712c9SDave Chinner got.br_state))) 523130f712c9SDave Chinner goto done; 523230f712c9SDave Chinner break; 523330f712c9SDave Chinner 523430f712c9SDave Chinner case 1: 523530f712c9SDave Chinner /* 523630f712c9SDave Chinner * Deleting the last part of the extent. 523730f712c9SDave Chinner */ 523830f712c9SDave Chinner temp = got.br_blockcount - del->br_blockcount; 523930f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 524030f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 524130f712c9SDave Chinner if (delay) { 524230f712c9SDave Chinner temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 524330f712c9SDave Chinner da_old); 524430f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 524530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 524630f712c9SDave Chinner da_new = temp; 524730f712c9SDave Chinner break; 524830f712c9SDave Chinner } 524930f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 525030f712c9SDave Chinner if (!cur) { 525130f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 525230f712c9SDave Chinner break; 525330f712c9SDave Chinner } 525430f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, got.br_startoff, 525530f712c9SDave Chinner got.br_startblock, 525630f712c9SDave Chinner got.br_blockcount - del->br_blockcount, 525730f712c9SDave Chinner got.br_state))) 525830f712c9SDave Chinner goto done; 525930f712c9SDave Chinner break; 526030f712c9SDave Chinner 526130f712c9SDave Chinner case 0: 526230f712c9SDave Chinner /* 526330f712c9SDave Chinner * Deleting the middle of the extent. 526430f712c9SDave Chinner */ 526530f712c9SDave Chinner temp = del->br_startoff - got.br_startoff; 526630f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 526730f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 526830f712c9SDave Chinner new.br_startoff = del_endoff; 526930f712c9SDave Chinner temp2 = got_endoff - del_endoff; 527030f712c9SDave Chinner new.br_blockcount = temp2; 527130f712c9SDave Chinner new.br_state = got.br_state; 527230f712c9SDave Chinner if (!delay) { 527330f712c9SDave Chinner new.br_startblock = del_endblock; 527430f712c9SDave Chinner flags |= XFS_ILOG_CORE; 527530f712c9SDave Chinner if (cur) { 527630f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 527730f712c9SDave Chinner got.br_startoff, 527830f712c9SDave Chinner got.br_startblock, temp, 527930f712c9SDave Chinner got.br_state))) 528030f712c9SDave Chinner goto done; 528130f712c9SDave Chinner if ((error = xfs_btree_increment(cur, 0, &i))) 528230f712c9SDave Chinner goto done; 528330f712c9SDave Chinner cur->bc_rec.b = new; 528430f712c9SDave Chinner error = xfs_btree_insert(cur, &i); 52852451337dSDave Chinner if (error && error != -ENOSPC) 528630f712c9SDave Chinner goto done; 528730f712c9SDave Chinner /* 528830f712c9SDave Chinner * If get no-space back from btree insert, 528930f712c9SDave Chinner * it tried a split, and we have a zero 529030f712c9SDave Chinner * block reservation. 529130f712c9SDave Chinner * Fix up our state and return the error. 529230f712c9SDave Chinner */ 52932451337dSDave Chinner if (error == -ENOSPC) { 529430f712c9SDave Chinner /* 529530f712c9SDave Chinner * Reset the cursor, don't trust 529630f712c9SDave Chinner * it after any insert operation. 529730f712c9SDave Chinner */ 529830f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, 529930f712c9SDave Chinner got.br_startoff, 530030f712c9SDave Chinner got.br_startblock, 530130f712c9SDave Chinner temp, &i))) 530230f712c9SDave Chinner goto done; 5303c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 5304c29aad41SEric Sandeen i == 1, done); 530530f712c9SDave Chinner /* 530630f712c9SDave Chinner * Update the btree record back 530730f712c9SDave Chinner * to the original value. 530830f712c9SDave Chinner */ 530930f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 531030f712c9SDave Chinner got.br_startoff, 531130f712c9SDave Chinner got.br_startblock, 531230f712c9SDave Chinner got.br_blockcount, 531330f712c9SDave Chinner got.br_state))) 531430f712c9SDave Chinner goto done; 531530f712c9SDave Chinner /* 531630f712c9SDave Chinner * Reset the extent record back 531730f712c9SDave Chinner * to the original value. 531830f712c9SDave Chinner */ 531930f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 532030f712c9SDave Chinner got.br_blockcount); 532130f712c9SDave Chinner flags = 0; 53222451337dSDave Chinner error = -ENOSPC; 532330f712c9SDave Chinner goto done; 532430f712c9SDave Chinner } 5325c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 532630f712c9SDave Chinner } else 532730f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 532830f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 532930f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 533030f712c9SDave Chinner } else { 5331d34999c9SBrian Foster xfs_filblks_t stolen; 533230f712c9SDave Chinner ASSERT(whichfork == XFS_DATA_FORK); 5333a9bd24acSBrian Foster 5334a9bd24acSBrian Foster /* 5335a9bd24acSBrian Foster * Distribute the original indlen reservation across the 5336d34999c9SBrian Foster * two new extents. Steal blocks from the deleted extent 5337d34999c9SBrian Foster * if necessary. Stealing blocks simply fudges the 5338d34999c9SBrian Foster * fdblocks accounting in xfs_bunmapi(). 5339a9bd24acSBrian Foster */ 5340a9bd24acSBrian Foster temp = xfs_bmap_worst_indlen(ip, got.br_blockcount); 5341a9bd24acSBrian Foster temp2 = xfs_bmap_worst_indlen(ip, new.br_blockcount); 5342d34999c9SBrian Foster stolen = xfs_bmap_split_indlen(da_old, &temp, &temp2, 5343d34999c9SBrian Foster del->br_blockcount); 5344d34999c9SBrian Foster da_new = temp + temp2 - stolen; 5345d34999c9SBrian Foster del->br_blockcount -= stolen; 5346a9bd24acSBrian Foster 5347a9bd24acSBrian Foster /* 5348d34999c9SBrian Foster * Set the reservation for each extent. Warn if either 5349d34999c9SBrian Foster * is zero as this can lead to delalloc problems. 5350a9bd24acSBrian Foster */ 5351d34999c9SBrian Foster WARN_ON_ONCE(!temp || !temp2); 535230f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 535330f712c9SDave Chinner new.br_startblock = nullstartblock((int)temp2); 535430f712c9SDave Chinner } 535530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 535630f712c9SDave Chinner xfs_iext_insert(ip, *idx + 1, 1, &new, state); 535730f712c9SDave Chinner ++*idx; 535830f712c9SDave Chinner break; 535930f712c9SDave Chinner } 53609c194644SDarrick J. Wong 53619c194644SDarrick J. Wong /* remove reverse mapping */ 53629c194644SDarrick J. Wong if (!delay) { 53639c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, del); 53649c194644SDarrick J. Wong if (error) 53659c194644SDarrick J. Wong goto done; 53669c194644SDarrick J. Wong } 53679c194644SDarrick J. Wong 536830f712c9SDave Chinner /* 536930f712c9SDave Chinner * If we need to, add to list of extents to delete. 537030f712c9SDave Chinner */ 53714847acf8SDarrick J. Wong if (do_fx && !(bflags & XFS_BMAPI_REMAP)) { 537262aab20fSDarrick J. Wong if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) { 537362aab20fSDarrick J. Wong error = xfs_refcount_decrease_extent(mp, dfops, del); 537462aab20fSDarrick J. Wong if (error) 537562aab20fSDarrick J. Wong goto done; 537662aab20fSDarrick J. Wong } else 53772c3234d1SDarrick J. Wong xfs_bmap_add_free(mp, dfops, del->br_startblock, 5378340785ccSDarrick J. Wong del->br_blockcount, NULL); 537962aab20fSDarrick J. Wong } 538062aab20fSDarrick J. Wong 538130f712c9SDave Chinner /* 538230f712c9SDave Chinner * Adjust inode # blocks in the file. 538330f712c9SDave Chinner */ 538430f712c9SDave Chinner if (nblks) 538530f712c9SDave Chinner ip->i_d.di_nblocks -= nblks; 538630f712c9SDave Chinner /* 538730f712c9SDave Chinner * Adjust quota data. 538830f712c9SDave Chinner */ 53894847acf8SDarrick J. Wong if (qfield && !(bflags & XFS_BMAPI_REMAP)) 539030f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks); 539130f712c9SDave Chinner 539230f712c9SDave Chinner /* 539330f712c9SDave Chinner * Account for change in delayed indirect blocks. 539430f712c9SDave Chinner * Nothing to do for disk quota accounting here. 539530f712c9SDave Chinner */ 539630f712c9SDave Chinner ASSERT(da_old >= da_new); 53970d485adaSDave Chinner if (da_old > da_new) 53980d485adaSDave Chinner xfs_mod_fdblocks(mp, (int64_t)(da_old - da_new), false); 539930f712c9SDave Chinner done: 540030f712c9SDave Chinner *logflagsp = flags; 540130f712c9SDave Chinner return error; 540230f712c9SDave Chinner } 540330f712c9SDave Chinner 540430f712c9SDave Chinner /* 540530f712c9SDave Chinner * Unmap (remove) blocks from a file. 540630f712c9SDave Chinner * If nexts is nonzero then the number of extents to remove is limited to 540730f712c9SDave Chinner * that value. If not all extents in the block range can be removed then 540830f712c9SDave Chinner * *done is set. 540930f712c9SDave Chinner */ 541030f712c9SDave Chinner int /* error */ 54114453593bSDarrick J. Wong __xfs_bunmapi( 541230f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 541330f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 541430f712c9SDave Chinner xfs_fileoff_t bno, /* starting offset to unmap */ 54154453593bSDarrick J. Wong xfs_filblks_t *rlen, /* i/o: amount remaining */ 541630f712c9SDave Chinner int flags, /* misc flags */ 541730f712c9SDave Chinner xfs_extnum_t nexts, /* number of extents max */ 541830f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first allocated block 541930f712c9SDave Chinner controls a.g. for allocs */ 54204453593bSDarrick J. Wong struct xfs_defer_ops *dfops) /* i/o: deferred updates */ 542130f712c9SDave Chinner { 542230f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 542330f712c9SDave Chinner xfs_bmbt_irec_t del; /* extent being deleted */ 542430f712c9SDave Chinner int error; /* error return value */ 542530f712c9SDave Chinner xfs_extnum_t extno; /* extent number in list */ 542630f712c9SDave Chinner xfs_bmbt_irec_t got; /* current extent record */ 542730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 542830f712c9SDave Chinner int isrt; /* freeing in rt area */ 542930f712c9SDave Chinner xfs_extnum_t lastx; /* last extent index used */ 543030f712c9SDave Chinner int logflags; /* transaction logging flags */ 543130f712c9SDave Chinner xfs_extlen_t mod; /* rt extent offset */ 543230f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 543330f712c9SDave Chinner xfs_fileoff_t start; /* first file offset deleted */ 543430f712c9SDave Chinner int tmp_logflags; /* partial logging flags */ 543530f712c9SDave Chinner int wasdel; /* was a delayed alloc extent */ 543630f712c9SDave Chinner int whichfork; /* data or attribute fork */ 543730f712c9SDave Chinner xfs_fsblock_t sum; 54384453593bSDarrick J. Wong xfs_filblks_t len = *rlen; /* length to unmap in file */ 543930f712c9SDave Chinner 544030f712c9SDave Chinner trace_xfs_bunmap(ip, bno, len, flags, _RET_IP_); 544130f712c9SDave Chinner 54423993baebSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 54433993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 544430f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 544530f712c9SDave Chinner if (unlikely( 544630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 544730f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { 544830f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bunmapi", XFS_ERRLEVEL_LOW, 544930f712c9SDave Chinner ip->i_mount); 54502451337dSDave Chinner return -EFSCORRUPTED; 545130f712c9SDave Chinner } 545230f712c9SDave Chinner mp = ip->i_mount; 545330f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 54542451337dSDave Chinner return -EIO; 545530f712c9SDave Chinner 545630f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 545730f712c9SDave Chinner ASSERT(len > 0); 545830f712c9SDave Chinner ASSERT(nexts >= 0); 545930f712c9SDave Chinner 546030f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 546130f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 546230f712c9SDave Chinner return error; 54635d829300SEric Sandeen if (xfs_iext_count(ifp) == 0) { 54644453593bSDarrick J. Wong *rlen = 0; 546530f712c9SDave Chinner return 0; 546630f712c9SDave Chinner } 5467ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_unmap); 546830f712c9SDave Chinner isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 546930f712c9SDave Chinner start = bno; 547030f712c9SDave Chinner bno = start + len - 1; 547130f712c9SDave Chinner 547230f712c9SDave Chinner /* 547330f712c9SDave Chinner * Check to see if the given block number is past the end of the 547430f712c9SDave Chinner * file, back up to the last block if so... 547530f712c9SDave Chinner */ 54767efc7945SChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &lastx, &got)) { 54777efc7945SChristoph Hellwig ASSERT(lastx > 0); 54787efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, --lastx, &got); 547930f712c9SDave Chinner bno = got.br_startoff + got.br_blockcount - 1; 548030f712c9SDave Chinner } 54817efc7945SChristoph Hellwig 548230f712c9SDave Chinner logflags = 0; 548330f712c9SDave Chinner if (ifp->if_flags & XFS_IFBROOT) { 548430f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 548530f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 548630f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 54872c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 548830f712c9SDave Chinner cur->bc_private.b.flags = 0; 548930f712c9SDave Chinner } else 549030f712c9SDave Chinner cur = NULL; 549130f712c9SDave Chinner 549230f712c9SDave Chinner if (isrt) { 549330f712c9SDave Chinner /* 549430f712c9SDave Chinner * Synchronize by locking the bitmap inode. 549530f712c9SDave Chinner */ 5496f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL|XFS_ILOCK_RTBITMAP); 549730f712c9SDave Chinner xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL); 5498f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL|XFS_ILOCK_RTSUM); 5499f4a0660dSDarrick J. Wong xfs_trans_ijoin(tp, mp->m_rsumip, XFS_ILOCK_EXCL); 550030f712c9SDave Chinner } 550130f712c9SDave Chinner 550230f712c9SDave Chinner extno = 0; 550330f712c9SDave Chinner while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 && 550430f712c9SDave Chinner (nexts == 0 || extno < nexts)) { 550530f712c9SDave Chinner /* 550630f712c9SDave Chinner * Is the found extent after a hole in which bno lives? 550730f712c9SDave Chinner * Just back up to the previous extent, if so. 550830f712c9SDave Chinner */ 550930f712c9SDave Chinner if (got.br_startoff > bno) { 551030f712c9SDave Chinner if (--lastx < 0) 551130f712c9SDave Chinner break; 55127efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 551330f712c9SDave Chinner } 551430f712c9SDave Chinner /* 551530f712c9SDave Chinner * Is the last block of this extent before the range 551630f712c9SDave Chinner * we're supposed to delete? If so, we're done. 551730f712c9SDave Chinner */ 551830f712c9SDave Chinner bno = XFS_FILEOFF_MIN(bno, 551930f712c9SDave Chinner got.br_startoff + got.br_blockcount - 1); 552030f712c9SDave Chinner if (bno < start) 552130f712c9SDave Chinner break; 552230f712c9SDave Chinner /* 552330f712c9SDave Chinner * Then deal with the (possibly delayed) allocated space 552430f712c9SDave Chinner * we found. 552530f712c9SDave Chinner */ 552630f712c9SDave Chinner del = got; 552730f712c9SDave Chinner wasdel = isnullstartblock(del.br_startblock); 552830f712c9SDave Chinner if (got.br_startoff < start) { 552930f712c9SDave Chinner del.br_startoff = start; 553030f712c9SDave Chinner del.br_blockcount -= start - got.br_startoff; 553130f712c9SDave Chinner if (!wasdel) 553230f712c9SDave Chinner del.br_startblock += start - got.br_startoff; 553330f712c9SDave Chinner } 553430f712c9SDave Chinner if (del.br_startoff + del.br_blockcount > bno + 1) 553530f712c9SDave Chinner del.br_blockcount = bno + 1 - del.br_startoff; 553630f712c9SDave Chinner sum = del.br_startblock + del.br_blockcount; 553730f712c9SDave Chinner if (isrt && 553830f712c9SDave Chinner (mod = do_mod(sum, mp->m_sb.sb_rextsize))) { 553930f712c9SDave Chinner /* 554030f712c9SDave Chinner * Realtime extent not lined up at the end. 554130f712c9SDave Chinner * The extent could have been split into written 554230f712c9SDave Chinner * and unwritten pieces, or we could just be 554330f712c9SDave Chinner * unmapping part of it. But we can't really 554430f712c9SDave Chinner * get rid of part of a realtime extent. 554530f712c9SDave Chinner */ 554630f712c9SDave Chinner if (del.br_state == XFS_EXT_UNWRITTEN || 554730f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 554830f712c9SDave Chinner /* 554930f712c9SDave Chinner * This piece is unwritten, or we're not 555030f712c9SDave Chinner * using unwritten extents. Skip over it. 555130f712c9SDave Chinner */ 555230f712c9SDave Chinner ASSERT(bno >= mod); 555330f712c9SDave Chinner bno -= mod > del.br_blockcount ? 555430f712c9SDave Chinner del.br_blockcount : mod; 555530f712c9SDave Chinner if (bno < got.br_startoff) { 555630f712c9SDave Chinner if (--lastx >= 0) 555730f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext( 555830f712c9SDave Chinner ifp, lastx), &got); 555930f712c9SDave Chinner } 556030f712c9SDave Chinner continue; 556130f712c9SDave Chinner } 556230f712c9SDave Chinner /* 556330f712c9SDave Chinner * It's written, turn it unwritten. 556430f712c9SDave Chinner * This is better than zeroing it. 556530f712c9SDave Chinner */ 556630f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 5567a7e5d03bSChristoph Hellwig ASSERT(tp->t_blk_res > 0); 556830f712c9SDave Chinner /* 556930f712c9SDave Chinner * If this spans a realtime extent boundary, 557030f712c9SDave Chinner * chop it back to the start of the one we end at. 557130f712c9SDave Chinner */ 557230f712c9SDave Chinner if (del.br_blockcount > mod) { 557330f712c9SDave Chinner del.br_startoff += del.br_blockcount - mod; 557430f712c9SDave Chinner del.br_startblock += del.br_blockcount - mod; 557530f712c9SDave Chinner del.br_blockcount = mod; 557630f712c9SDave Chinner } 557730f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 557830f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, ip, 557905a630d7SDarrick J. Wong whichfork, &lastx, &cur, &del, 558005a630d7SDarrick J. Wong firstblock, dfops, &logflags); 558130f712c9SDave Chinner if (error) 558230f712c9SDave Chinner goto error0; 558330f712c9SDave Chinner goto nodelete; 558430f712c9SDave Chinner } 558530f712c9SDave Chinner if (isrt && (mod = do_mod(del.br_startblock, mp->m_sb.sb_rextsize))) { 558630f712c9SDave Chinner /* 558730f712c9SDave Chinner * Realtime extent is lined up at the end but not 558830f712c9SDave Chinner * at the front. We'll get rid of full extents if 558930f712c9SDave Chinner * we can. 559030f712c9SDave Chinner */ 559130f712c9SDave Chinner mod = mp->m_sb.sb_rextsize - mod; 559230f712c9SDave Chinner if (del.br_blockcount > mod) { 559330f712c9SDave Chinner del.br_blockcount -= mod; 559430f712c9SDave Chinner del.br_startoff += mod; 559530f712c9SDave Chinner del.br_startblock += mod; 559630f712c9SDave Chinner } else if ((del.br_startoff == start && 559730f712c9SDave Chinner (del.br_state == XFS_EXT_UNWRITTEN || 5598a7e5d03bSChristoph Hellwig tp->t_blk_res == 0)) || 559930f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 560030f712c9SDave Chinner /* 560130f712c9SDave Chinner * Can't make it unwritten. There isn't 560230f712c9SDave Chinner * a full extent here so just skip it. 560330f712c9SDave Chinner */ 560430f712c9SDave Chinner ASSERT(bno >= del.br_blockcount); 560530f712c9SDave Chinner bno -= del.br_blockcount; 56067efc7945SChristoph Hellwig if (got.br_startoff > bno && --lastx >= 0) 56077efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 560830f712c9SDave Chinner continue; 560930f712c9SDave Chinner } else if (del.br_state == XFS_EXT_UNWRITTEN) { 56107efc7945SChristoph Hellwig struct xfs_bmbt_irec prev; 56117efc7945SChristoph Hellwig 561230f712c9SDave Chinner /* 561330f712c9SDave Chinner * This one is already unwritten. 561430f712c9SDave Chinner * It must have a written left neighbor. 561530f712c9SDave Chinner * Unwrite the killed part of that one and 561630f712c9SDave Chinner * try again. 561730f712c9SDave Chinner */ 561830f712c9SDave Chinner ASSERT(lastx > 0); 56197efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx - 1, &prev); 562030f712c9SDave Chinner ASSERT(prev.br_state == XFS_EXT_NORM); 562130f712c9SDave Chinner ASSERT(!isnullstartblock(prev.br_startblock)); 562230f712c9SDave Chinner ASSERT(del.br_startblock == 562330f712c9SDave Chinner prev.br_startblock + prev.br_blockcount); 562430f712c9SDave Chinner if (prev.br_startoff < start) { 562530f712c9SDave Chinner mod = start - prev.br_startoff; 562630f712c9SDave Chinner prev.br_blockcount -= mod; 562730f712c9SDave Chinner prev.br_startblock += mod; 562830f712c9SDave Chinner prev.br_startoff = start; 562930f712c9SDave Chinner } 563030f712c9SDave Chinner prev.br_state = XFS_EXT_UNWRITTEN; 563130f712c9SDave Chinner lastx--; 563230f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 563305a630d7SDarrick J. Wong ip, whichfork, &lastx, &cur, 563405a630d7SDarrick J. Wong &prev, firstblock, dfops, 563505a630d7SDarrick J. Wong &logflags); 563630f712c9SDave Chinner if (error) 563730f712c9SDave Chinner goto error0; 563830f712c9SDave Chinner goto nodelete; 563930f712c9SDave Chinner } else { 564030f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 564130f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 564230f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 564305a630d7SDarrick J. Wong ip, whichfork, &lastx, &cur, 564405a630d7SDarrick J. Wong &del, firstblock, dfops, 564505a630d7SDarrick J. Wong &logflags); 564630f712c9SDave Chinner if (error) 564730f712c9SDave Chinner goto error0; 564830f712c9SDave Chinner goto nodelete; 564930f712c9SDave Chinner } 565030f712c9SDave Chinner } 565130f712c9SDave Chinner 565230f712c9SDave Chinner /* 565330f712c9SDave Chinner * If it's the case where the directory code is running 565430f712c9SDave Chinner * with no block reservation, and the deleted block is in 565530f712c9SDave Chinner * the middle of its extent, and the resulting insert 565630f712c9SDave Chinner * of an extent would cause transformation to btree format, 565730f712c9SDave Chinner * then reject it. The calling code will then swap 565830f712c9SDave Chinner * blocks around instead. 565930f712c9SDave Chinner * We have to do this now, rather than waiting for the 566030f712c9SDave Chinner * conversion to btree format, since the transaction 566130f712c9SDave Chinner * will be dirty. 566230f712c9SDave Chinner */ 5663a7e5d03bSChristoph Hellwig if (!wasdel && tp->t_blk_res == 0 && 566430f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 566530f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) >= /* Note the >= */ 566630f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork) && 566730f712c9SDave Chinner del.br_startoff > got.br_startoff && 566830f712c9SDave Chinner del.br_startoff + del.br_blockcount < 566930f712c9SDave Chinner got.br_startoff + got.br_blockcount) { 56702451337dSDave Chinner error = -ENOSPC; 567130f712c9SDave Chinner goto error0; 567230f712c9SDave Chinner } 5673b2706a05SBrian Foster 5674b2706a05SBrian Foster /* 5675b2706a05SBrian Foster * Unreserve quota and update realtime free space, if 5676b2706a05SBrian Foster * appropriate. If delayed allocation, update the inode delalloc 5677b2706a05SBrian Foster * counter now and wait to update the sb counters as 5678b2706a05SBrian Foster * xfs_bmap_del_extent() might need to borrow some blocks. 5679b2706a05SBrian Foster */ 5680b2706a05SBrian Foster if (wasdel) { 5681b2706a05SBrian Foster ASSERT(startblockval(del.br_startblock) > 0); 5682b2706a05SBrian Foster if (isrt) { 5683b2706a05SBrian Foster xfs_filblks_t rtexts; 5684b2706a05SBrian Foster 5685b2706a05SBrian Foster rtexts = XFS_FSB_TO_B(mp, del.br_blockcount); 5686b2706a05SBrian Foster do_div(rtexts, mp->m_sb.sb_rextsize); 5687b2706a05SBrian Foster xfs_mod_frextents(mp, (int64_t)rtexts); 5688b2706a05SBrian Foster (void)xfs_trans_reserve_quota_nblks(NULL, 5689b2706a05SBrian Foster ip, -((long)del.br_blockcount), 0, 5690b2706a05SBrian Foster XFS_QMOPT_RES_RTBLKS); 5691b2706a05SBrian Foster } else { 5692b2706a05SBrian Foster (void)xfs_trans_reserve_quota_nblks(NULL, 5693b2706a05SBrian Foster ip, -((long)del.br_blockcount), 0, 5694b2706a05SBrian Foster XFS_QMOPT_RES_REGBLKS); 5695b2706a05SBrian Foster } 5696b2706a05SBrian Foster ip->i_delayed_blks -= del.br_blockcount; 5697b2706a05SBrian Foster if (cur) 5698b2706a05SBrian Foster cur->bc_private.b.flags |= 5699b2706a05SBrian Foster XFS_BTCUR_BPRV_WASDEL; 5700b2706a05SBrian Foster } else if (cur) 5701b2706a05SBrian Foster cur->bc_private.b.flags &= ~XFS_BTCUR_BPRV_WASDEL; 5702b2706a05SBrian Foster 57032c3234d1SDarrick J. Wong error = xfs_bmap_del_extent(ip, tp, &lastx, dfops, cur, &del, 57044847acf8SDarrick J. Wong &tmp_logflags, whichfork, flags); 570530f712c9SDave Chinner logflags |= tmp_logflags; 570630f712c9SDave Chinner if (error) 570730f712c9SDave Chinner goto error0; 5708b2706a05SBrian Foster 5709b2706a05SBrian Foster if (!isrt && wasdel) 5710b2706a05SBrian Foster xfs_mod_fdblocks(mp, (int64_t)del.br_blockcount, false); 5711b2706a05SBrian Foster 571230f712c9SDave Chinner bno = del.br_startoff - 1; 571330f712c9SDave Chinner nodelete: 571430f712c9SDave Chinner /* 571530f712c9SDave Chinner * If not done go on to the next (previous) record. 571630f712c9SDave Chinner */ 571730f712c9SDave Chinner if (bno != (xfs_fileoff_t)-1 && bno >= start) { 571830f712c9SDave Chinner if (lastx >= 0) { 57197efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 57207efc7945SChristoph Hellwig if (got.br_startoff > bno && --lastx >= 0) 57217efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 572230f712c9SDave Chinner } 572330f712c9SDave Chinner extno++; 572430f712c9SDave Chinner } 572530f712c9SDave Chinner } 57264453593bSDarrick J. Wong if (bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0) 57274453593bSDarrick J. Wong *rlen = 0; 57284453593bSDarrick J. Wong else 57294453593bSDarrick J. Wong *rlen = bno - start + 1; 573030f712c9SDave Chinner 573130f712c9SDave Chinner /* 573230f712c9SDave Chinner * Convert to a btree if necessary. 573330f712c9SDave Chinner */ 573430f712c9SDave Chinner if (xfs_bmap_needs_btree(ip, whichfork)) { 573530f712c9SDave Chinner ASSERT(cur == NULL); 57362c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstblock, dfops, 573730f712c9SDave Chinner &cur, 0, &tmp_logflags, whichfork); 573830f712c9SDave Chinner logflags |= tmp_logflags; 573930f712c9SDave Chinner if (error) 574030f712c9SDave Chinner goto error0; 574130f712c9SDave Chinner } 574230f712c9SDave Chinner /* 574330f712c9SDave Chinner * transform from btree to extents, give it cur 574430f712c9SDave Chinner */ 574530f712c9SDave Chinner else if (xfs_bmap_wants_extents(ip, whichfork)) { 574630f712c9SDave Chinner ASSERT(cur != NULL); 574730f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags, 574830f712c9SDave Chinner whichfork); 574930f712c9SDave Chinner logflags |= tmp_logflags; 575030f712c9SDave Chinner if (error) 575130f712c9SDave Chinner goto error0; 575230f712c9SDave Chinner } 575330f712c9SDave Chinner /* 575430f712c9SDave Chinner * transform from extents to local? 575530f712c9SDave Chinner */ 575630f712c9SDave Chinner error = 0; 575730f712c9SDave Chinner error0: 575830f712c9SDave Chinner /* 575930f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 576030f712c9SDave Chinner * logging the extent records if we've converted to btree format. 576130f712c9SDave Chinner */ 576230f712c9SDave Chinner if ((logflags & xfs_ilog_fext(whichfork)) && 576330f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 576430f712c9SDave Chinner logflags &= ~xfs_ilog_fext(whichfork); 576530f712c9SDave Chinner else if ((logflags & xfs_ilog_fbroot(whichfork)) && 576630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 576730f712c9SDave Chinner logflags &= ~xfs_ilog_fbroot(whichfork); 576830f712c9SDave Chinner /* 576930f712c9SDave Chinner * Log inode even in the error case, if the transaction 577030f712c9SDave Chinner * is dirty we'll need to shut down the filesystem. 577130f712c9SDave Chinner */ 577230f712c9SDave Chinner if (logflags) 577330f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 577430f712c9SDave Chinner if (cur) { 577530f712c9SDave Chinner if (!error) { 577630f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock; 577730f712c9SDave Chinner cur->bc_private.b.allocated = 0; 577830f712c9SDave Chinner } 577930f712c9SDave Chinner xfs_btree_del_cursor(cur, 578030f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 578130f712c9SDave Chinner } 578230f712c9SDave Chinner return error; 578330f712c9SDave Chinner } 578430f712c9SDave Chinner 57854453593bSDarrick J. Wong /* Unmap a range of a file. */ 57864453593bSDarrick J. Wong int 57874453593bSDarrick J. Wong xfs_bunmapi( 57884453593bSDarrick J. Wong xfs_trans_t *tp, 57894453593bSDarrick J. Wong struct xfs_inode *ip, 57904453593bSDarrick J. Wong xfs_fileoff_t bno, 57914453593bSDarrick J. Wong xfs_filblks_t len, 57924453593bSDarrick J. Wong int flags, 57934453593bSDarrick J. Wong xfs_extnum_t nexts, 57944453593bSDarrick J. Wong xfs_fsblock_t *firstblock, 57954453593bSDarrick J. Wong struct xfs_defer_ops *dfops, 57964453593bSDarrick J. Wong int *done) 57974453593bSDarrick J. Wong { 57984453593bSDarrick J. Wong int error; 57994453593bSDarrick J. Wong 58004453593bSDarrick J. Wong error = __xfs_bunmapi(tp, ip, bno, &len, flags, nexts, firstblock, 58014453593bSDarrick J. Wong dfops); 58024453593bSDarrick J. Wong *done = (len == 0); 58034453593bSDarrick J. Wong return error; 58044453593bSDarrick J. Wong } 58054453593bSDarrick J. Wong 580630f712c9SDave Chinner /* 5807ddb19e31SBrian Foster * Determine whether an extent shift can be accomplished by a merge with the 5808ddb19e31SBrian Foster * extent that precedes the target hole of the shift. 5809ddb19e31SBrian Foster */ 5810ddb19e31SBrian Foster STATIC bool 5811ddb19e31SBrian Foster xfs_bmse_can_merge( 5812ddb19e31SBrian Foster struct xfs_bmbt_irec *left, /* preceding extent */ 5813ddb19e31SBrian Foster struct xfs_bmbt_irec *got, /* current extent to shift */ 5814ddb19e31SBrian Foster xfs_fileoff_t shift) /* shift fsb */ 5815ddb19e31SBrian Foster { 5816ddb19e31SBrian Foster xfs_fileoff_t startoff; 5817ddb19e31SBrian Foster 5818ddb19e31SBrian Foster startoff = got->br_startoff - shift; 5819ddb19e31SBrian Foster 5820ddb19e31SBrian Foster /* 5821ddb19e31SBrian Foster * The extent, once shifted, must be adjacent in-file and on-disk with 5822ddb19e31SBrian Foster * the preceding extent. 5823ddb19e31SBrian Foster */ 5824ddb19e31SBrian Foster if ((left->br_startoff + left->br_blockcount != startoff) || 5825ddb19e31SBrian Foster (left->br_startblock + left->br_blockcount != got->br_startblock) || 5826ddb19e31SBrian Foster (left->br_state != got->br_state) || 5827ddb19e31SBrian Foster (left->br_blockcount + got->br_blockcount > MAXEXTLEN)) 5828ddb19e31SBrian Foster return false; 5829ddb19e31SBrian Foster 5830ddb19e31SBrian Foster return true; 5831ddb19e31SBrian Foster } 5832ddb19e31SBrian Foster 5833ddb19e31SBrian Foster /* 5834ddb19e31SBrian Foster * A bmap extent shift adjusts the file offset of an extent to fill a preceding 5835ddb19e31SBrian Foster * hole in the file. If an extent shift would result in the extent being fully 5836ddb19e31SBrian Foster * adjacent to the extent that currently precedes the hole, we can merge with 5837ddb19e31SBrian Foster * the preceding extent rather than do the shift. 5838ddb19e31SBrian Foster * 5839ddb19e31SBrian Foster * This function assumes the caller has verified a shift-by-merge is possible 5840ddb19e31SBrian Foster * with the provided extents via xfs_bmse_can_merge(). 5841ddb19e31SBrian Foster */ 5842ddb19e31SBrian Foster STATIC int 5843ddb19e31SBrian Foster xfs_bmse_merge( 5844ddb19e31SBrian Foster struct xfs_inode *ip, 5845ddb19e31SBrian Foster int whichfork, 5846ddb19e31SBrian Foster xfs_fileoff_t shift, /* shift fsb */ 5847ddb19e31SBrian Foster int current_ext, /* idx of gotp */ 5848ddb19e31SBrian Foster struct xfs_bmbt_rec_host *gotp, /* extent to shift */ 5849ddb19e31SBrian Foster struct xfs_bmbt_rec_host *leftp, /* preceding extent */ 5850ddb19e31SBrian Foster struct xfs_btree_cur *cur, 5851ddb19e31SBrian Foster int *logflags) /* output */ 5852ddb19e31SBrian Foster { 5853ddb19e31SBrian Foster struct xfs_bmbt_irec got; 5854ddb19e31SBrian Foster struct xfs_bmbt_irec left; 5855ddb19e31SBrian Foster xfs_filblks_t blockcount; 5856ddb19e31SBrian Foster int error, i; 58575fb5aeeeSEric Sandeen struct xfs_mount *mp = ip->i_mount; 5858ddb19e31SBrian Foster 5859ddb19e31SBrian Foster xfs_bmbt_get_all(gotp, &got); 5860ddb19e31SBrian Foster xfs_bmbt_get_all(leftp, &left); 5861ddb19e31SBrian Foster blockcount = left.br_blockcount + got.br_blockcount; 5862ddb19e31SBrian Foster 5863ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 5864ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 5865ddb19e31SBrian Foster ASSERT(xfs_bmse_can_merge(&left, &got, shift)); 5866ddb19e31SBrian Foster 5867ddb19e31SBrian Foster /* 5868ddb19e31SBrian Foster * Merge the in-core extents. Note that the host record pointers and 5869ddb19e31SBrian Foster * current_ext index are invalid once the extent has been removed via 5870ddb19e31SBrian Foster * xfs_iext_remove(). 5871ddb19e31SBrian Foster */ 5872ddb19e31SBrian Foster xfs_bmbt_set_blockcount(leftp, blockcount); 5873ddb19e31SBrian Foster xfs_iext_remove(ip, current_ext, 1, 0); 5874ddb19e31SBrian Foster 5875ddb19e31SBrian Foster /* 5876ddb19e31SBrian Foster * Update the on-disk extent count, the btree if necessary and log the 5877ddb19e31SBrian Foster * inode. 5878ddb19e31SBrian Foster */ 5879ddb19e31SBrian Foster XFS_IFORK_NEXT_SET(ip, whichfork, 5880ddb19e31SBrian Foster XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 5881ddb19e31SBrian Foster *logflags |= XFS_ILOG_CORE; 5882ddb19e31SBrian Foster if (!cur) { 5883ddb19e31SBrian Foster *logflags |= XFS_ILOG_DEXT; 5884ddb19e31SBrian Foster return 0; 5885ddb19e31SBrian Foster } 5886ddb19e31SBrian Foster 5887ddb19e31SBrian Foster /* lookup and remove the extent to merge */ 5888ddb19e31SBrian Foster error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, 5889ddb19e31SBrian Foster got.br_blockcount, &i); 5890ddb19e31SBrian Foster if (error) 58914db431f5SDave Chinner return error; 58925fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5893ddb19e31SBrian Foster 5894ddb19e31SBrian Foster error = xfs_btree_delete(cur, &i); 5895ddb19e31SBrian Foster if (error) 58964db431f5SDave Chinner return error; 58975fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5898ddb19e31SBrian Foster 5899ddb19e31SBrian Foster /* lookup and update size of the previous extent */ 5900ddb19e31SBrian Foster error = xfs_bmbt_lookup_eq(cur, left.br_startoff, left.br_startblock, 5901ddb19e31SBrian Foster left.br_blockcount, &i); 5902ddb19e31SBrian Foster if (error) 59034db431f5SDave Chinner return error; 59045fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5905ddb19e31SBrian Foster 5906ddb19e31SBrian Foster left.br_blockcount = blockcount; 5907ddb19e31SBrian Foster 59084db431f5SDave Chinner return xfs_bmbt_update(cur, left.br_startoff, left.br_startblock, 5909ddb19e31SBrian Foster left.br_blockcount, left.br_state); 5910ddb19e31SBrian Foster } 5911ddb19e31SBrian Foster 5912ddb19e31SBrian Foster /* 5913a979bdfeSBrian Foster * Shift a single extent. 5914a979bdfeSBrian Foster */ 5915a979bdfeSBrian Foster STATIC int 5916a979bdfeSBrian Foster xfs_bmse_shift_one( 5917a979bdfeSBrian Foster struct xfs_inode *ip, 5918a979bdfeSBrian Foster int whichfork, 5919a979bdfeSBrian Foster xfs_fileoff_t offset_shift_fsb, 5920a979bdfeSBrian Foster int *current_ext, 5921a979bdfeSBrian Foster struct xfs_bmbt_rec_host *gotp, 5922a979bdfeSBrian Foster struct xfs_btree_cur *cur, 5923a904b1caSNamjae Jeon int *logflags, 59249c194644SDarrick J. Wong enum shift_direction direction, 59259c194644SDarrick J. Wong struct xfs_defer_ops *dfops) 5926a979bdfeSBrian Foster { 5927a979bdfeSBrian Foster struct xfs_ifork *ifp; 59285fb5aeeeSEric Sandeen struct xfs_mount *mp; 5929a979bdfeSBrian Foster xfs_fileoff_t startoff; 5930a904b1caSNamjae Jeon struct xfs_bmbt_rec_host *adj_irecp; 5931a979bdfeSBrian Foster struct xfs_bmbt_irec got; 5932a904b1caSNamjae Jeon struct xfs_bmbt_irec adj_irec; 5933a979bdfeSBrian Foster int error; 5934a979bdfeSBrian Foster int i; 5935a904b1caSNamjae Jeon int total_extents; 5936a979bdfeSBrian Foster 59375fb5aeeeSEric Sandeen mp = ip->i_mount; 5938a979bdfeSBrian Foster ifp = XFS_IFORK_PTR(ip, whichfork); 59395d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 5940a979bdfeSBrian Foster 5941a979bdfeSBrian Foster xfs_bmbt_get_all(gotp, &got); 5942a979bdfeSBrian Foster 5943f71721d0SBrian Foster /* delalloc extents should be prevented by caller */ 59445fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got.br_startblock)); 5945f71721d0SBrian Foster 5946a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) { 5947a904b1caSNamjae Jeon startoff = got.br_startoff - offset_shift_fsb; 5948a979bdfeSBrian Foster 5949a904b1caSNamjae Jeon /* 5950a904b1caSNamjae Jeon * Check for merge if we've got an extent to the left, 5951a904b1caSNamjae Jeon * otherwise make sure there's enough room at the start 5952a904b1caSNamjae Jeon * of the file for the shift. 5953a904b1caSNamjae Jeon */ 5954a904b1caSNamjae Jeon if (!*current_ext) { 5955a904b1caSNamjae Jeon if (got.br_startoff < offset_shift_fsb) 5956a904b1caSNamjae Jeon return -EINVAL; 5957a904b1caSNamjae Jeon goto update_current_ext; 5958a904b1caSNamjae Jeon } 5959a904b1caSNamjae Jeon /* 5960a904b1caSNamjae Jeon * grab the left extent and check for a large 5961a904b1caSNamjae Jeon * enough hole. 5962a904b1caSNamjae Jeon */ 5963a904b1caSNamjae Jeon adj_irecp = xfs_iext_get_ext(ifp, *current_ext - 1); 5964a904b1caSNamjae Jeon xfs_bmbt_get_all(adj_irecp, &adj_irec); 5965a904b1caSNamjae Jeon 5966a904b1caSNamjae Jeon if (startoff < 5967a904b1caSNamjae Jeon adj_irec.br_startoff + adj_irec.br_blockcount) 5968a979bdfeSBrian Foster return -EINVAL; 5969a979bdfeSBrian Foster 5970a979bdfeSBrian Foster /* check whether to merge the extent or shift it down */ 5971a904b1caSNamjae Jeon if (xfs_bmse_can_merge(&adj_irec, &got, 5972a904b1caSNamjae Jeon offset_shift_fsb)) { 59739c194644SDarrick J. Wong error = xfs_bmse_merge(ip, whichfork, offset_shift_fsb, 5974a904b1caSNamjae Jeon *current_ext, gotp, adj_irecp, 5975a904b1caSNamjae Jeon cur, logflags); 59769c194644SDarrick J. Wong if (error) 59779c194644SDarrick J. Wong return error; 59789c194644SDarrick J. Wong adj_irec = got; 59799c194644SDarrick J. Wong goto update_rmap; 5980b11bd671SDave Chinner } 5981a904b1caSNamjae Jeon } else { 5982a904b1caSNamjae Jeon startoff = got.br_startoff + offset_shift_fsb; 5983a904b1caSNamjae Jeon /* nothing to move if this is the last extent */ 5984a904b1caSNamjae Jeon if (*current_ext >= (total_extents - 1)) 5985a904b1caSNamjae Jeon goto update_current_ext; 5986a904b1caSNamjae Jeon /* 5987a904b1caSNamjae Jeon * If this is not the last extent in the file, make sure there 5988a904b1caSNamjae Jeon * is enough room between current extent and next extent for 5989a904b1caSNamjae Jeon * accommodating the shift. 5990a904b1caSNamjae Jeon */ 5991a904b1caSNamjae Jeon adj_irecp = xfs_iext_get_ext(ifp, *current_ext + 1); 5992a904b1caSNamjae Jeon xfs_bmbt_get_all(adj_irecp, &adj_irec); 5993a904b1caSNamjae Jeon if (startoff + got.br_blockcount > adj_irec.br_startoff) 5994b11bd671SDave Chinner return -EINVAL; 5995a904b1caSNamjae Jeon /* 5996a904b1caSNamjae Jeon * Unlike a left shift (which involves a hole punch), 5997a904b1caSNamjae Jeon * a right shift does not modify extent neighbors 5998a904b1caSNamjae Jeon * in any way. We should never find mergeable extents 5999a904b1caSNamjae Jeon * in this scenario. Check anyways and warn if we 6000a904b1caSNamjae Jeon * encounter two extents that could be one. 6001a904b1caSNamjae Jeon */ 6002a904b1caSNamjae Jeon if (xfs_bmse_can_merge(&got, &adj_irec, offset_shift_fsb)) 6003a904b1caSNamjae Jeon WARN_ON_ONCE(1); 6004a904b1caSNamjae Jeon } 6005a979bdfeSBrian Foster /* 6006a979bdfeSBrian Foster * Increment the extent index for the next iteration, update the start 6007a979bdfeSBrian Foster * offset of the in-core extent and update the btree if applicable. 6008a979bdfeSBrian Foster */ 6009a904b1caSNamjae Jeon update_current_ext: 6010a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) 6011a979bdfeSBrian Foster (*current_ext)++; 6012a904b1caSNamjae Jeon else 6013a904b1caSNamjae Jeon (*current_ext)--; 6014a979bdfeSBrian Foster xfs_bmbt_set_startoff(gotp, startoff); 6015a979bdfeSBrian Foster *logflags |= XFS_ILOG_CORE; 60169c194644SDarrick J. Wong adj_irec = got; 6017a979bdfeSBrian Foster if (!cur) { 6018a979bdfeSBrian Foster *logflags |= XFS_ILOG_DEXT; 60199c194644SDarrick J. Wong goto update_rmap; 6020a979bdfeSBrian Foster } 6021a979bdfeSBrian Foster 6022a979bdfeSBrian Foster error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, 6023a979bdfeSBrian Foster got.br_blockcount, &i); 6024a979bdfeSBrian Foster if (error) 6025a979bdfeSBrian Foster return error; 60265fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 6027a979bdfeSBrian Foster 6028a979bdfeSBrian Foster got.br_startoff = startoff; 60299c194644SDarrick J. Wong error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, 6030a979bdfeSBrian Foster got.br_blockcount, got.br_state); 60319c194644SDarrick J. Wong if (error) 60329c194644SDarrick J. Wong return error; 60339c194644SDarrick J. Wong 60349c194644SDarrick J. Wong update_rmap: 60359c194644SDarrick J. Wong /* update reverse mapping */ 60369c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &adj_irec); 60379c194644SDarrick J. Wong if (error) 60389c194644SDarrick J. Wong return error; 60399c194644SDarrick J. Wong adj_irec.br_startoff = startoff; 60409c194644SDarrick J. Wong return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &adj_irec); 6041a979bdfeSBrian Foster } 6042a979bdfeSBrian Foster 6043a979bdfeSBrian Foster /* 6044a904b1caSNamjae Jeon * Shift extent records to the left/right to cover/create a hole. 604530f712c9SDave Chinner * 60462c845f5aSBrian Foster * The maximum number of extents to be shifted in a single operation is 6047a904b1caSNamjae Jeon * @num_exts. @stop_fsb specifies the file offset at which to stop shift and the 60482c845f5aSBrian Foster * file offset where we've left off is returned in @next_fsb. @offset_shift_fsb 60492c845f5aSBrian Foster * is the length by which each extent is shifted. If there is no hole to shift 60502c845f5aSBrian Foster * the extents into, this will be considered invalid operation and we abort 60512c845f5aSBrian Foster * immediately. 605230f712c9SDave Chinner */ 605330f712c9SDave Chinner int 605430f712c9SDave Chinner xfs_bmap_shift_extents( 605530f712c9SDave Chinner struct xfs_trans *tp, 605630f712c9SDave Chinner struct xfs_inode *ip, 6057a904b1caSNamjae Jeon xfs_fileoff_t *next_fsb, 605830f712c9SDave Chinner xfs_fileoff_t offset_shift_fsb, 60592c845f5aSBrian Foster int *done, 6060a904b1caSNamjae Jeon xfs_fileoff_t stop_fsb, 606130f712c9SDave Chinner xfs_fsblock_t *firstblock, 60622c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, 6063a904b1caSNamjae Jeon enum shift_direction direction, 606430f712c9SDave Chinner int num_exts) 606530f712c9SDave Chinner { 6066ca446d88SBrian Foster struct xfs_btree_cur *cur = NULL; 606730f712c9SDave Chinner struct xfs_bmbt_rec_host *gotp; 606830f712c9SDave Chinner struct xfs_bmbt_irec got; 606930f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 607030f712c9SDave Chinner struct xfs_ifork *ifp; 607130f712c9SDave Chinner xfs_extnum_t nexts = 0; 60722c845f5aSBrian Foster xfs_extnum_t current_ext; 6073a904b1caSNamjae Jeon xfs_extnum_t total_extents; 6074a904b1caSNamjae Jeon xfs_extnum_t stop_extent; 607530f712c9SDave Chinner int error = 0; 607630f712c9SDave Chinner int whichfork = XFS_DATA_FORK; 6077ca446d88SBrian Foster int logflags = 0; 607830f712c9SDave Chinner 607930f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 608030f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 608130f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 608230f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 608330f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmap_shift_extents", 608430f712c9SDave Chinner XFS_ERRLEVEL_LOW, mp); 60852451337dSDave Chinner return -EFSCORRUPTED; 608630f712c9SDave Chinner } 608730f712c9SDave Chinner 608830f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 60892451337dSDave Chinner return -EIO; 609030f712c9SDave Chinner 60912c845f5aSBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 60922c845f5aSBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 6093a904b1caSNamjae Jeon ASSERT(direction == SHIFT_LEFT || direction == SHIFT_RIGHT); 6094a904b1caSNamjae Jeon ASSERT(*next_fsb != NULLFSBLOCK || direction == SHIFT_RIGHT); 609530f712c9SDave Chinner 609630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 609730f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 609830f712c9SDave Chinner /* Read in all the extents */ 609930f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 610030f712c9SDave Chinner if (error) 610130f712c9SDave Chinner return error; 610230f712c9SDave Chinner } 610330f712c9SDave Chinner 6104ddb19e31SBrian Foster if (ifp->if_flags & XFS_IFBROOT) { 6105ddb19e31SBrian Foster cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 6106ddb19e31SBrian Foster cur->bc_private.b.firstblock = *firstblock; 61072c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 6108ddb19e31SBrian Foster cur->bc_private.b.flags = 0; 6109ddb19e31SBrian Foster } 6110ddb19e31SBrian Foster 611130f712c9SDave Chinner /* 611230f712c9SDave Chinner * There may be delalloc extents in the data fork before the range we 61132c845f5aSBrian Foster * are collapsing out, so we cannot use the count of real extents here. 61142c845f5aSBrian Foster * Instead we have to calculate it from the incore fork. 611530f712c9SDave Chinner */ 61165d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 6117a904b1caSNamjae Jeon if (total_extents == 0) { 6118a904b1caSNamjae Jeon *done = 1; 6119a904b1caSNamjae Jeon goto del_cursor; 6120a904b1caSNamjae Jeon } 6121a904b1caSNamjae Jeon 6122a904b1caSNamjae Jeon /* 6123a904b1caSNamjae Jeon * In case of first right shift, we need to initialize next_fsb 6124a904b1caSNamjae Jeon */ 6125a904b1caSNamjae Jeon if (*next_fsb == NULLFSBLOCK) { 6126a904b1caSNamjae Jeon gotp = xfs_iext_get_ext(ifp, total_extents - 1); 6127a904b1caSNamjae Jeon xfs_bmbt_get_all(gotp, &got); 6128a904b1caSNamjae Jeon *next_fsb = got.br_startoff; 6129a904b1caSNamjae Jeon if (stop_fsb > *next_fsb) { 6130a904b1caSNamjae Jeon *done = 1; 6131a904b1caSNamjae Jeon goto del_cursor; 6132a904b1caSNamjae Jeon } 6133a904b1caSNamjae Jeon } 6134a904b1caSNamjae Jeon 6135a904b1caSNamjae Jeon /* Lookup the extent index at which we have to stop */ 6136a904b1caSNamjae Jeon if (direction == SHIFT_RIGHT) { 6137a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, stop_fsb, &stop_extent); 6138a904b1caSNamjae Jeon /* Make stop_extent exclusive of shift range */ 6139a904b1caSNamjae Jeon stop_extent--; 6140a904b1caSNamjae Jeon } else 6141a904b1caSNamjae Jeon stop_extent = total_extents; 6142a904b1caSNamjae Jeon 6143a904b1caSNamjae Jeon /* 6144a904b1caSNamjae Jeon * Look up the extent index for the fsb where we start shifting. We can 6145a904b1caSNamjae Jeon * henceforth iterate with current_ext as extent list changes are locked 6146a904b1caSNamjae Jeon * out via ilock. 6147a904b1caSNamjae Jeon * 6148a904b1caSNamjae Jeon * gotp can be null in 2 cases: 1) if there are no extents or 2) 6149a904b1caSNamjae Jeon * *next_fsb lies in a hole beyond which there are no extents. Either 6150a904b1caSNamjae Jeon * way, we are done. 6151a904b1caSNamjae Jeon */ 6152a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, *next_fsb, ¤t_ext); 6153a904b1caSNamjae Jeon if (!gotp) { 6154a904b1caSNamjae Jeon *done = 1; 6155a904b1caSNamjae Jeon goto del_cursor; 6156a904b1caSNamjae Jeon } 6157a904b1caSNamjae Jeon 6158a904b1caSNamjae Jeon /* some sanity checking before we finally start shifting extents */ 6159a904b1caSNamjae Jeon if ((direction == SHIFT_LEFT && current_ext >= stop_extent) || 6160a904b1caSNamjae Jeon (direction == SHIFT_RIGHT && current_ext <= stop_extent)) { 6161a904b1caSNamjae Jeon error = -EIO; 6162a904b1caSNamjae Jeon goto del_cursor; 6163a904b1caSNamjae Jeon } 6164a904b1caSNamjae Jeon 6165a904b1caSNamjae Jeon while (nexts++ < num_exts) { 6166a979bdfeSBrian Foster error = xfs_bmse_shift_one(ip, whichfork, offset_shift_fsb, 6167a904b1caSNamjae Jeon ¤t_ext, gotp, cur, &logflags, 61689c194644SDarrick J. Wong direction, dfops); 6169ddb19e31SBrian Foster if (error) 6170ddb19e31SBrian Foster goto del_cursor; 6171a904b1caSNamjae Jeon /* 6172a904b1caSNamjae Jeon * If there was an extent merge during the shift, the extent 6173a904b1caSNamjae Jeon * count can change. Update the total and grade the next record. 6174a904b1caSNamjae Jeon */ 6175a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) { 61765d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 6177a904b1caSNamjae Jeon stop_extent = total_extents; 6178a904b1caSNamjae Jeon } 6179a904b1caSNamjae Jeon 6180a904b1caSNamjae Jeon if (current_ext == stop_extent) { 6181a904b1caSNamjae Jeon *done = 1; 6182a904b1caSNamjae Jeon *next_fsb = NULLFSBLOCK; 6183ddb19e31SBrian Foster break; 6184a904b1caSNamjae Jeon } 6185ddb19e31SBrian Foster gotp = xfs_iext_get_ext(ifp, current_ext); 618630f712c9SDave Chinner } 618730f712c9SDave Chinner 6188a904b1caSNamjae Jeon if (!*done) { 6189a979bdfeSBrian Foster xfs_bmbt_get_all(gotp, &got); 61902c845f5aSBrian Foster *next_fsb = got.br_startoff; 6191a979bdfeSBrian Foster } 619230f712c9SDave Chinner 619330f712c9SDave Chinner del_cursor: 619430f712c9SDave Chinner if (cur) 619530f712c9SDave Chinner xfs_btree_del_cursor(cur, 619630f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 619730f712c9SDave Chinner 6198ca446d88SBrian Foster if (logflags) 619930f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 62002c845f5aSBrian Foster 620130f712c9SDave Chinner return error; 620230f712c9SDave Chinner } 6203a904b1caSNamjae Jeon 6204a904b1caSNamjae Jeon /* 6205a904b1caSNamjae Jeon * Splits an extent into two extents at split_fsb block such that it is 6206a904b1caSNamjae Jeon * the first block of the current_ext. @current_ext is a target extent 6207a904b1caSNamjae Jeon * to be split. @split_fsb is a block where the extents is split. 6208a904b1caSNamjae Jeon * If split_fsb lies in a hole or the first block of extents, just return 0. 6209a904b1caSNamjae Jeon */ 6210a904b1caSNamjae Jeon STATIC int 6211a904b1caSNamjae Jeon xfs_bmap_split_extent_at( 6212a904b1caSNamjae Jeon struct xfs_trans *tp, 6213a904b1caSNamjae Jeon struct xfs_inode *ip, 6214a904b1caSNamjae Jeon xfs_fileoff_t split_fsb, 6215a904b1caSNamjae Jeon xfs_fsblock_t *firstfsb, 62162c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops) 6217a904b1caSNamjae Jeon { 6218a904b1caSNamjae Jeon int whichfork = XFS_DATA_FORK; 6219a904b1caSNamjae Jeon struct xfs_btree_cur *cur = NULL; 6220a904b1caSNamjae Jeon struct xfs_bmbt_rec_host *gotp; 6221a904b1caSNamjae Jeon struct xfs_bmbt_irec got; 6222a904b1caSNamjae Jeon struct xfs_bmbt_irec new; /* split extent */ 6223a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6224a904b1caSNamjae Jeon struct xfs_ifork *ifp; 6225a904b1caSNamjae Jeon xfs_fsblock_t gotblkcnt; /* new block count for got */ 6226a904b1caSNamjae Jeon xfs_extnum_t current_ext; 6227a904b1caSNamjae Jeon int error = 0; 6228a904b1caSNamjae Jeon int logflags = 0; 6229a904b1caSNamjae Jeon int i = 0; 6230a904b1caSNamjae Jeon 6231a904b1caSNamjae Jeon if (unlikely(XFS_TEST_ERROR( 6232a904b1caSNamjae Jeon (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 6233a904b1caSNamjae Jeon XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 6234a904b1caSNamjae Jeon mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 6235a904b1caSNamjae Jeon XFS_ERROR_REPORT("xfs_bmap_split_extent_at", 6236a904b1caSNamjae Jeon XFS_ERRLEVEL_LOW, mp); 6237a904b1caSNamjae Jeon return -EFSCORRUPTED; 6238a904b1caSNamjae Jeon } 6239a904b1caSNamjae Jeon 6240a904b1caSNamjae Jeon if (XFS_FORCED_SHUTDOWN(mp)) 6241a904b1caSNamjae Jeon return -EIO; 6242a904b1caSNamjae Jeon 6243a904b1caSNamjae Jeon ifp = XFS_IFORK_PTR(ip, whichfork); 6244a904b1caSNamjae Jeon if (!(ifp->if_flags & XFS_IFEXTENTS)) { 6245a904b1caSNamjae Jeon /* Read in all the extents */ 6246a904b1caSNamjae Jeon error = xfs_iread_extents(tp, ip, whichfork); 6247a904b1caSNamjae Jeon if (error) 6248a904b1caSNamjae Jeon return error; 6249a904b1caSNamjae Jeon } 6250a904b1caSNamjae Jeon 6251a904b1caSNamjae Jeon /* 6252a904b1caSNamjae Jeon * gotp can be null in 2 cases: 1) if there are no extents 6253a904b1caSNamjae Jeon * or 2) split_fsb lies in a hole beyond which there are 6254a904b1caSNamjae Jeon * no extents. Either way, we are done. 6255a904b1caSNamjae Jeon */ 6256a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, split_fsb, ¤t_ext); 6257a904b1caSNamjae Jeon if (!gotp) 6258a904b1caSNamjae Jeon return 0; 6259a904b1caSNamjae Jeon 6260a904b1caSNamjae Jeon xfs_bmbt_get_all(gotp, &got); 6261a904b1caSNamjae Jeon 6262a904b1caSNamjae Jeon /* 6263a904b1caSNamjae Jeon * Check split_fsb lies in a hole or the start boundary offset 6264a904b1caSNamjae Jeon * of the extent. 6265a904b1caSNamjae Jeon */ 6266a904b1caSNamjae Jeon if (got.br_startoff >= split_fsb) 6267a904b1caSNamjae Jeon return 0; 6268a904b1caSNamjae Jeon 6269a904b1caSNamjae Jeon gotblkcnt = split_fsb - got.br_startoff; 6270a904b1caSNamjae Jeon new.br_startoff = split_fsb; 6271a904b1caSNamjae Jeon new.br_startblock = got.br_startblock + gotblkcnt; 6272a904b1caSNamjae Jeon new.br_blockcount = got.br_blockcount - gotblkcnt; 6273a904b1caSNamjae Jeon new.br_state = got.br_state; 6274a904b1caSNamjae Jeon 6275a904b1caSNamjae Jeon if (ifp->if_flags & XFS_IFBROOT) { 6276a904b1caSNamjae Jeon cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 6277a904b1caSNamjae Jeon cur->bc_private.b.firstblock = *firstfsb; 62782c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 6279a904b1caSNamjae Jeon cur->bc_private.b.flags = 0; 6280a904b1caSNamjae Jeon error = xfs_bmbt_lookup_eq(cur, got.br_startoff, 6281a904b1caSNamjae Jeon got.br_startblock, 6282a904b1caSNamjae Jeon got.br_blockcount, 6283a904b1caSNamjae Jeon &i); 6284a904b1caSNamjae Jeon if (error) 6285a904b1caSNamjae Jeon goto del_cursor; 6286a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 6287a904b1caSNamjae Jeon } 6288a904b1caSNamjae Jeon 6289a904b1caSNamjae Jeon xfs_bmbt_set_blockcount(gotp, gotblkcnt); 6290a904b1caSNamjae Jeon got.br_blockcount = gotblkcnt; 6291a904b1caSNamjae Jeon 6292a904b1caSNamjae Jeon logflags = XFS_ILOG_CORE; 6293a904b1caSNamjae Jeon if (cur) { 6294a904b1caSNamjae Jeon error = xfs_bmbt_update(cur, got.br_startoff, 6295a904b1caSNamjae Jeon got.br_startblock, 6296a904b1caSNamjae Jeon got.br_blockcount, 6297a904b1caSNamjae Jeon got.br_state); 6298a904b1caSNamjae Jeon if (error) 6299a904b1caSNamjae Jeon goto del_cursor; 6300a904b1caSNamjae Jeon } else 6301a904b1caSNamjae Jeon logflags |= XFS_ILOG_DEXT; 6302a904b1caSNamjae Jeon 6303a904b1caSNamjae Jeon /* Add new extent */ 6304a904b1caSNamjae Jeon current_ext++; 6305a904b1caSNamjae Jeon xfs_iext_insert(ip, current_ext, 1, &new, 0); 6306a904b1caSNamjae Jeon XFS_IFORK_NEXT_SET(ip, whichfork, 6307a904b1caSNamjae Jeon XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 6308a904b1caSNamjae Jeon 6309a904b1caSNamjae Jeon if (cur) { 6310a904b1caSNamjae Jeon error = xfs_bmbt_lookup_eq(cur, new.br_startoff, 6311a904b1caSNamjae Jeon new.br_startblock, new.br_blockcount, 6312a904b1caSNamjae Jeon &i); 6313a904b1caSNamjae Jeon if (error) 6314a904b1caSNamjae Jeon goto del_cursor; 6315a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 0, del_cursor); 6316a904b1caSNamjae Jeon cur->bc_rec.b.br_state = new.br_state; 6317a904b1caSNamjae Jeon 6318a904b1caSNamjae Jeon error = xfs_btree_insert(cur, &i); 6319a904b1caSNamjae Jeon if (error) 6320a904b1caSNamjae Jeon goto del_cursor; 6321a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 6322a904b1caSNamjae Jeon } 6323a904b1caSNamjae Jeon 6324a904b1caSNamjae Jeon /* 6325a904b1caSNamjae Jeon * Convert to a btree if necessary. 6326a904b1caSNamjae Jeon */ 6327a904b1caSNamjae Jeon if (xfs_bmap_needs_btree(ip, whichfork)) { 6328a904b1caSNamjae Jeon int tmp_logflags; /* partial log flag return val */ 6329a904b1caSNamjae Jeon 6330a904b1caSNamjae Jeon ASSERT(cur == NULL); 63312c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstfsb, dfops, 6332a904b1caSNamjae Jeon &cur, 0, &tmp_logflags, whichfork); 6333a904b1caSNamjae Jeon logflags |= tmp_logflags; 6334a904b1caSNamjae Jeon } 6335a904b1caSNamjae Jeon 6336a904b1caSNamjae Jeon del_cursor: 6337a904b1caSNamjae Jeon if (cur) { 6338a904b1caSNamjae Jeon cur->bc_private.b.allocated = 0; 6339a904b1caSNamjae Jeon xfs_btree_del_cursor(cur, 6340a904b1caSNamjae Jeon error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 6341a904b1caSNamjae Jeon } 6342a904b1caSNamjae Jeon 6343a904b1caSNamjae Jeon if (logflags) 6344a904b1caSNamjae Jeon xfs_trans_log_inode(tp, ip, logflags); 6345a904b1caSNamjae Jeon return error; 6346a904b1caSNamjae Jeon } 6347a904b1caSNamjae Jeon 6348a904b1caSNamjae Jeon int 6349a904b1caSNamjae Jeon xfs_bmap_split_extent( 6350a904b1caSNamjae Jeon struct xfs_inode *ip, 6351a904b1caSNamjae Jeon xfs_fileoff_t split_fsb) 6352a904b1caSNamjae Jeon { 6353a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6354a904b1caSNamjae Jeon struct xfs_trans *tp; 63552c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; 6356a904b1caSNamjae Jeon xfs_fsblock_t firstfsb; 6357a904b1caSNamjae Jeon int error; 6358a904b1caSNamjae Jeon 6359253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 6360253f4911SChristoph Hellwig XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp); 6361253f4911SChristoph Hellwig if (error) 6362a904b1caSNamjae Jeon return error; 6363a904b1caSNamjae Jeon 6364a904b1caSNamjae Jeon xfs_ilock(ip, XFS_ILOCK_EXCL); 6365a904b1caSNamjae Jeon xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); 6366a904b1caSNamjae Jeon 63672c3234d1SDarrick J. Wong xfs_defer_init(&dfops, &firstfsb); 6368a904b1caSNamjae Jeon 6369a904b1caSNamjae Jeon error = xfs_bmap_split_extent_at(tp, ip, split_fsb, 63702c3234d1SDarrick J. Wong &firstfsb, &dfops); 6371a904b1caSNamjae Jeon if (error) 6372a904b1caSNamjae Jeon goto out; 6373a904b1caSNamjae Jeon 63742c3234d1SDarrick J. Wong error = xfs_defer_finish(&tp, &dfops, NULL); 6375a904b1caSNamjae Jeon if (error) 6376a904b1caSNamjae Jeon goto out; 6377a904b1caSNamjae Jeon 637870393313SChristoph Hellwig return xfs_trans_commit(tp); 6379a904b1caSNamjae Jeon 6380a904b1caSNamjae Jeon out: 63812c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 63824906e215SChristoph Hellwig xfs_trans_cancel(tp); 6383a904b1caSNamjae Jeon return error; 6384a904b1caSNamjae Jeon } 63859f3afb57SDarrick J. Wong 63869f3afb57SDarrick J. Wong /* Deferred mapping is only for real extents in the data fork. */ 63879f3afb57SDarrick J. Wong static bool 63889f3afb57SDarrick J. Wong xfs_bmap_is_update_needed( 63899f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 63909f3afb57SDarrick J. Wong { 63919f3afb57SDarrick J. Wong return bmap->br_startblock != HOLESTARTBLOCK && 63929f3afb57SDarrick J. Wong bmap->br_startblock != DELAYSTARTBLOCK; 63939f3afb57SDarrick J. Wong } 63949f3afb57SDarrick J. Wong 63959f3afb57SDarrick J. Wong /* Record a bmap intent. */ 63969f3afb57SDarrick J. Wong static int 63979f3afb57SDarrick J. Wong __xfs_bmap_add( 63989f3afb57SDarrick J. Wong struct xfs_mount *mp, 63999f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 64009f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 64019f3afb57SDarrick J. Wong struct xfs_inode *ip, 64029f3afb57SDarrick J. Wong int whichfork, 64039f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 64049f3afb57SDarrick J. Wong { 64059f3afb57SDarrick J. Wong int error; 64069f3afb57SDarrick J. Wong struct xfs_bmap_intent *bi; 64079f3afb57SDarrick J. Wong 64089f3afb57SDarrick J. Wong trace_xfs_bmap_defer(mp, 64099f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(mp, bmap->br_startblock), 64109f3afb57SDarrick J. Wong type, 64119f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bmap->br_startblock), 64129f3afb57SDarrick J. Wong ip->i_ino, whichfork, 64139f3afb57SDarrick J. Wong bmap->br_startoff, 64149f3afb57SDarrick J. Wong bmap->br_blockcount, 64159f3afb57SDarrick J. Wong bmap->br_state); 64169f3afb57SDarrick J. Wong 64179f3afb57SDarrick J. Wong bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_SLEEP | KM_NOFS); 64189f3afb57SDarrick J. Wong INIT_LIST_HEAD(&bi->bi_list); 64199f3afb57SDarrick J. Wong bi->bi_type = type; 64209f3afb57SDarrick J. Wong bi->bi_owner = ip; 64219f3afb57SDarrick J. Wong bi->bi_whichfork = whichfork; 64229f3afb57SDarrick J. Wong bi->bi_bmap = *bmap; 64239f3afb57SDarrick J. Wong 64249f3afb57SDarrick J. Wong error = xfs_defer_join(dfops, bi->bi_owner); 64259f3afb57SDarrick J. Wong if (error) { 64269f3afb57SDarrick J. Wong kmem_free(bi); 64279f3afb57SDarrick J. Wong return error; 64289f3afb57SDarrick J. Wong } 64299f3afb57SDarrick J. Wong 64309f3afb57SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_BMAP, &bi->bi_list); 64319f3afb57SDarrick J. Wong return 0; 64329f3afb57SDarrick J. Wong } 64339f3afb57SDarrick J. Wong 64349f3afb57SDarrick J. Wong /* Map an extent into a file. */ 64359f3afb57SDarrick J. Wong int 64369f3afb57SDarrick J. Wong xfs_bmap_map_extent( 64379f3afb57SDarrick J. Wong struct xfs_mount *mp, 64389f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 64399f3afb57SDarrick J. Wong struct xfs_inode *ip, 64409f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 64419f3afb57SDarrick J. Wong { 64429f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 64439f3afb57SDarrick J. Wong return 0; 64449f3afb57SDarrick J. Wong 64459f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_MAP, ip, 64469f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 64479f3afb57SDarrick J. Wong } 64489f3afb57SDarrick J. Wong 64499f3afb57SDarrick J. Wong /* Unmap an extent out of a file. */ 64509f3afb57SDarrick J. Wong int 64519f3afb57SDarrick J. Wong xfs_bmap_unmap_extent( 64529f3afb57SDarrick J. Wong struct xfs_mount *mp, 64539f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 64549f3afb57SDarrick J. Wong struct xfs_inode *ip, 64559f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 64569f3afb57SDarrick J. Wong { 64579f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 64589f3afb57SDarrick J. Wong return 0; 64599f3afb57SDarrick J. Wong 64609f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_UNMAP, ip, 64619f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 64629f3afb57SDarrick J. Wong } 64639f3afb57SDarrick J. Wong 64649f3afb57SDarrick J. Wong /* 64659f3afb57SDarrick J. Wong * Process one of the deferred bmap operations. We pass back the 64669f3afb57SDarrick J. Wong * btree cursor to maintain our lock on the bmapbt between calls. 64679f3afb57SDarrick J. Wong */ 64689f3afb57SDarrick J. Wong int 64699f3afb57SDarrick J. Wong xfs_bmap_finish_one( 64709f3afb57SDarrick J. Wong struct xfs_trans *tp, 64719f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 64729f3afb57SDarrick J. Wong struct xfs_inode *ip, 64739f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 64749f3afb57SDarrick J. Wong int whichfork, 64759f3afb57SDarrick J. Wong xfs_fileoff_t startoff, 64769f3afb57SDarrick J. Wong xfs_fsblock_t startblock, 64779f3afb57SDarrick J. Wong xfs_filblks_t blockcount, 64789f3afb57SDarrick J. Wong xfs_exntst_t state) 64799f3afb57SDarrick J. Wong { 64806ebd5a44SChristoph Hellwig int error = 0, done; 64819f3afb57SDarrick J. Wong 64829f3afb57SDarrick J. Wong trace_xfs_bmap_deferred(tp->t_mountp, 64839f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(tp->t_mountp, startblock), type, 64849f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), 64859f3afb57SDarrick J. Wong ip->i_ino, whichfork, startoff, blockcount, state); 64869f3afb57SDarrick J. Wong 648739e07daaSChristoph Hellwig if (WARN_ON_ONCE(whichfork != XFS_DATA_FORK)) 64889f3afb57SDarrick J. Wong return -EFSCORRUPTED; 64899f3afb57SDarrick J. Wong 64909f3afb57SDarrick J. Wong if (XFS_TEST_ERROR(false, tp->t_mountp, 64919f3afb57SDarrick J. Wong XFS_ERRTAG_BMAP_FINISH_ONE, 64929f3afb57SDarrick J. Wong XFS_RANDOM_BMAP_FINISH_ONE)) 64939f3afb57SDarrick J. Wong return -EIO; 64949f3afb57SDarrick J. Wong 64959f3afb57SDarrick J. Wong switch (type) { 64969f3afb57SDarrick J. Wong case XFS_BMAP_MAP: 64976ebd5a44SChristoph Hellwig error = xfs_bmapi_remap(tp, ip, startoff, blockcount, 64986ebd5a44SChristoph Hellwig startblock, dfops); 64999f3afb57SDarrick J. Wong break; 65009f3afb57SDarrick J. Wong case XFS_BMAP_UNMAP: 65016ebd5a44SChristoph Hellwig error = xfs_bunmapi(tp, ip, startoff, blockcount, 65026ebd5a44SChristoph Hellwig XFS_BMAPI_REMAP, 1, &startblock, dfops, &done); 65039f3afb57SDarrick J. Wong ASSERT(done); 65049f3afb57SDarrick J. Wong break; 65059f3afb57SDarrick J. Wong default: 65069f3afb57SDarrick J. Wong ASSERT(0); 65079f3afb57SDarrick J. Wong error = -EFSCORRUPTED; 65089f3afb57SDarrick J. Wong } 65099f3afb57SDarrick J. Wong 65109f3afb57SDarrick J. Wong return error; 65119f3afb57SDarrick J. Wong } 6512