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" 5330f712c9SDave Chinner 5430f712c9SDave Chinner 5530f712c9SDave Chinner kmem_zone_t *xfs_bmap_free_item_zone; 5630f712c9SDave Chinner 5730f712c9SDave Chinner /* 5830f712c9SDave Chinner * Miscellaneous helper functions 5930f712c9SDave Chinner */ 6030f712c9SDave Chinner 6130f712c9SDave Chinner /* 6230f712c9SDave Chinner * Compute and fill in the value of the maximum depth of a bmap btree 6330f712c9SDave Chinner * in this filesystem. Done once, during mount. 6430f712c9SDave Chinner */ 6530f712c9SDave Chinner void 6630f712c9SDave Chinner xfs_bmap_compute_maxlevels( 6730f712c9SDave Chinner xfs_mount_t *mp, /* file system mount structure */ 6830f712c9SDave Chinner int whichfork) /* data or attr fork */ 6930f712c9SDave Chinner { 7030f712c9SDave Chinner int level; /* btree level */ 7130f712c9SDave Chinner uint maxblocks; /* max blocks at this level */ 7230f712c9SDave Chinner uint maxleafents; /* max leaf entries possible */ 7330f712c9SDave Chinner int maxrootrecs; /* max records in root block */ 7430f712c9SDave Chinner int minleafrecs; /* min records in leaf block */ 7530f712c9SDave Chinner int minnoderecs; /* min records in node block */ 7630f712c9SDave Chinner int sz; /* root block size */ 7730f712c9SDave Chinner 7830f712c9SDave Chinner /* 7930f712c9SDave Chinner * The maximum number of extents in a file, hence the maximum 8030f712c9SDave Chinner * number of leaf entries, is controlled by the type of di_nextents 8130f712c9SDave Chinner * (a signed 32-bit number, xfs_extnum_t), or by di_anextents 8230f712c9SDave Chinner * (a signed 16-bit number, xfs_aextnum_t). 8330f712c9SDave Chinner * 8430f712c9SDave Chinner * Note that we can no longer assume that if we are in ATTR1 that 8530f712c9SDave Chinner * the fork offset of all the inodes will be 8630f712c9SDave Chinner * (xfs_default_attroffset(ip) >> 3) because we could have mounted 8730f712c9SDave Chinner * with ATTR2 and then mounted back with ATTR1, keeping the 8830f712c9SDave Chinner * di_forkoff's fixed but probably at various positions. Therefore, 8930f712c9SDave Chinner * for both ATTR1 and ATTR2 we have to assume the worst case scenario 9030f712c9SDave Chinner * of a minimum size available. 9130f712c9SDave Chinner */ 9230f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) { 9330f712c9SDave Chinner maxleafents = MAXEXTNUM; 9430f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS); 9530f712c9SDave Chinner } else { 9630f712c9SDave Chinner maxleafents = MAXAEXTNUM; 9730f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINABTPTRS); 9830f712c9SDave Chinner } 9930f712c9SDave Chinner maxrootrecs = xfs_bmdr_maxrecs(sz, 0); 10030f712c9SDave Chinner minleafrecs = mp->m_bmap_dmnr[0]; 10130f712c9SDave Chinner minnoderecs = mp->m_bmap_dmnr[1]; 10230f712c9SDave Chinner maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; 10330f712c9SDave Chinner for (level = 1; maxblocks > 1; level++) { 10430f712c9SDave Chinner if (maxblocks <= maxrootrecs) 10530f712c9SDave Chinner maxblocks = 1; 10630f712c9SDave Chinner else 10730f712c9SDave Chinner maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; 10830f712c9SDave Chinner } 10930f712c9SDave Chinner mp->m_bm_maxlevels[whichfork] = level; 11030f712c9SDave Chinner } 11130f712c9SDave Chinner 11230f712c9SDave Chinner STATIC int /* error */ 11330f712c9SDave Chinner xfs_bmbt_lookup_eq( 11430f712c9SDave Chinner struct xfs_btree_cur *cur, 11530f712c9SDave Chinner xfs_fileoff_t off, 11630f712c9SDave Chinner xfs_fsblock_t bno, 11730f712c9SDave Chinner xfs_filblks_t len, 11830f712c9SDave Chinner int *stat) /* success/failure */ 11930f712c9SDave Chinner { 12030f712c9SDave Chinner cur->bc_rec.b.br_startoff = off; 12130f712c9SDave Chinner cur->bc_rec.b.br_startblock = bno; 12230f712c9SDave Chinner cur->bc_rec.b.br_blockcount = len; 12330f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat); 12430f712c9SDave Chinner } 12530f712c9SDave Chinner 12630f712c9SDave Chinner STATIC int /* error */ 12730f712c9SDave Chinner xfs_bmbt_lookup_ge( 12830f712c9SDave Chinner struct xfs_btree_cur *cur, 12930f712c9SDave Chinner xfs_fileoff_t off, 13030f712c9SDave Chinner xfs_fsblock_t bno, 13130f712c9SDave Chinner xfs_filblks_t len, 13230f712c9SDave Chinner int *stat) /* success/failure */ 13330f712c9SDave Chinner { 13430f712c9SDave Chinner cur->bc_rec.b.br_startoff = off; 13530f712c9SDave Chinner cur->bc_rec.b.br_startblock = bno; 13630f712c9SDave Chinner cur->bc_rec.b.br_blockcount = len; 13730f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat); 13830f712c9SDave Chinner } 13930f712c9SDave Chinner 14030f712c9SDave Chinner /* 14130f712c9SDave Chinner * Check if the inode needs to be converted to btree format. 14230f712c9SDave Chinner */ 14330f712c9SDave Chinner static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork) 14430f712c9SDave Chinner { 14560b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 14660b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 14730f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 14830f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 14930f712c9SDave Chinner } 15030f712c9SDave Chinner 15130f712c9SDave Chinner /* 15230f712c9SDave Chinner * Check if the inode should be converted to extent format. 15330f712c9SDave Chinner */ 15430f712c9SDave Chinner static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork) 15530f712c9SDave Chinner { 15660b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 15760b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE && 15830f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) <= 15930f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 16030f712c9SDave Chinner } 16130f712c9SDave Chinner 16230f712c9SDave Chinner /* 16330f712c9SDave Chinner * Update the record referred to by cur to the value given 16430f712c9SDave Chinner * by [off, bno, len, state]. 16530f712c9SDave Chinner * This either works (return 0) or gets an EFSCORRUPTED error. 16630f712c9SDave Chinner */ 16730f712c9SDave Chinner STATIC int 16830f712c9SDave Chinner xfs_bmbt_update( 16930f712c9SDave Chinner struct xfs_btree_cur *cur, 17030f712c9SDave Chinner xfs_fileoff_t off, 17130f712c9SDave Chinner xfs_fsblock_t bno, 17230f712c9SDave Chinner xfs_filblks_t len, 17330f712c9SDave Chinner xfs_exntst_t state) 17430f712c9SDave Chinner { 17530f712c9SDave Chinner union xfs_btree_rec rec; 17630f712c9SDave Chinner 17730f712c9SDave Chinner xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state); 17830f712c9SDave Chinner return xfs_btree_update(cur, &rec); 17930f712c9SDave Chinner } 18030f712c9SDave Chinner 18130f712c9SDave Chinner /* 18230f712c9SDave Chinner * Compute the worst-case number of indirect blocks that will be used 18330f712c9SDave Chinner * for ip's delayed extent of length "len". 18430f712c9SDave Chinner */ 18530f712c9SDave Chinner STATIC xfs_filblks_t 18630f712c9SDave Chinner xfs_bmap_worst_indlen( 18730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 18830f712c9SDave Chinner xfs_filblks_t len) /* delayed extent length */ 18930f712c9SDave Chinner { 19030f712c9SDave Chinner int level; /* btree level number */ 19130f712c9SDave Chinner int maxrecs; /* maximum record count at this level */ 19230f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 19330f712c9SDave Chinner xfs_filblks_t rval; /* return value */ 194fd26a880SDarrick J. Wong xfs_filblks_t orig_len; 19530f712c9SDave Chinner 19630f712c9SDave Chinner mp = ip->i_mount; 197fd26a880SDarrick J. Wong 198fd26a880SDarrick J. Wong /* Calculate the worst-case size of the bmbt. */ 199fd26a880SDarrick J. Wong orig_len = len; 20030f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[0]; 20130f712c9SDave Chinner for (level = 0, rval = 0; 20230f712c9SDave Chinner level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK); 20330f712c9SDave Chinner level++) { 20430f712c9SDave Chinner len += maxrecs - 1; 20530f712c9SDave Chinner do_div(len, maxrecs); 20630f712c9SDave Chinner rval += len; 207fd26a880SDarrick J. Wong if (len == 1) { 208fd26a880SDarrick J. Wong rval += XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) - 20930f712c9SDave Chinner level - 1; 210fd26a880SDarrick J. Wong break; 211fd26a880SDarrick J. Wong } 21230f712c9SDave Chinner if (level == 0) 21330f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[1]; 21430f712c9SDave Chinner } 215fd26a880SDarrick J. Wong 216fd26a880SDarrick J. Wong /* Calculate the worst-case size of the rmapbt. */ 217fd26a880SDarrick J. Wong if (xfs_sb_version_hasrmapbt(&mp->m_sb)) 218fd26a880SDarrick J. Wong rval += 1 + xfs_rmapbt_calc_size(mp, orig_len) + 219fd26a880SDarrick J. Wong mp->m_rmap_maxlevels; 220fd26a880SDarrick J. Wong 22130f712c9SDave Chinner return rval; 22230f712c9SDave Chinner } 22330f712c9SDave Chinner 22430f712c9SDave Chinner /* 22530f712c9SDave Chinner * Calculate the default attribute fork offset for newly created inodes. 22630f712c9SDave Chinner */ 22730f712c9SDave Chinner uint 22830f712c9SDave Chinner xfs_default_attroffset( 22930f712c9SDave Chinner struct xfs_inode *ip) 23030f712c9SDave Chinner { 23130f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 23230f712c9SDave Chinner uint offset; 23330f712c9SDave Chinner 23430f712c9SDave Chinner if (mp->m_sb.sb_inodesize == 256) { 23530f712c9SDave Chinner offset = XFS_LITINO(mp, ip->i_d.di_version) - 23630f712c9SDave Chinner XFS_BMDR_SPACE_CALC(MINABTPTRS); 23730f712c9SDave Chinner } else { 23830f712c9SDave Chinner offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); 23930f712c9SDave Chinner } 24030f712c9SDave Chinner 24130f712c9SDave Chinner ASSERT(offset < XFS_LITINO(mp, ip->i_d.di_version)); 24230f712c9SDave Chinner return offset; 24330f712c9SDave Chinner } 24430f712c9SDave Chinner 24530f712c9SDave Chinner /* 24630f712c9SDave Chinner * Helper routine to reset inode di_forkoff field when switching 24730f712c9SDave Chinner * attribute fork from local to extent format - we reset it where 24830f712c9SDave Chinner * possible to make space available for inline data fork extents. 24930f712c9SDave Chinner */ 25030f712c9SDave Chinner STATIC void 25130f712c9SDave Chinner xfs_bmap_forkoff_reset( 25230f712c9SDave Chinner xfs_inode_t *ip, 25330f712c9SDave Chinner int whichfork) 25430f712c9SDave Chinner { 25530f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK && 25630f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_DEV && 25730f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_UUID && 25830f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_BTREE) { 25930f712c9SDave Chinner uint dfl_forkoff = xfs_default_attroffset(ip) >> 3; 26030f712c9SDave Chinner 26130f712c9SDave Chinner if (dfl_forkoff > ip->i_d.di_forkoff) 26230f712c9SDave Chinner ip->i_d.di_forkoff = dfl_forkoff; 26330f712c9SDave Chinner } 26430f712c9SDave Chinner } 26530f712c9SDave Chinner 26630f712c9SDave Chinner #ifdef DEBUG 26730f712c9SDave Chinner STATIC struct xfs_buf * 26830f712c9SDave Chinner xfs_bmap_get_bp( 26930f712c9SDave Chinner struct xfs_btree_cur *cur, 27030f712c9SDave Chinner xfs_fsblock_t bno) 27130f712c9SDave Chinner { 27230f712c9SDave Chinner struct xfs_log_item_desc *lidp; 27330f712c9SDave Chinner int i; 27430f712c9SDave Chinner 27530f712c9SDave Chinner if (!cur) 27630f712c9SDave Chinner return NULL; 27730f712c9SDave Chinner 27830f712c9SDave Chinner for (i = 0; i < XFS_BTREE_MAXLEVELS; i++) { 27930f712c9SDave Chinner if (!cur->bc_bufs[i]) 28030f712c9SDave Chinner break; 28130f712c9SDave Chinner if (XFS_BUF_ADDR(cur->bc_bufs[i]) == bno) 28230f712c9SDave Chinner return cur->bc_bufs[i]; 28330f712c9SDave Chinner } 28430f712c9SDave Chinner 28530f712c9SDave Chinner /* Chase down all the log items to see if the bp is there */ 28630f712c9SDave Chinner list_for_each_entry(lidp, &cur->bc_tp->t_items, lid_trans) { 28730f712c9SDave Chinner struct xfs_buf_log_item *bip; 28830f712c9SDave Chinner bip = (struct xfs_buf_log_item *)lidp->lid_item; 28930f712c9SDave Chinner if (bip->bli_item.li_type == XFS_LI_BUF && 29030f712c9SDave Chinner XFS_BUF_ADDR(bip->bli_buf) == bno) 29130f712c9SDave Chinner return bip->bli_buf; 29230f712c9SDave Chinner } 29330f712c9SDave Chinner 29430f712c9SDave Chinner return NULL; 29530f712c9SDave Chinner } 29630f712c9SDave Chinner 29730f712c9SDave Chinner STATIC void 29830f712c9SDave Chinner xfs_check_block( 29930f712c9SDave Chinner struct xfs_btree_block *block, 30030f712c9SDave Chinner xfs_mount_t *mp, 30130f712c9SDave Chinner int root, 30230f712c9SDave Chinner short sz) 30330f712c9SDave Chinner { 30430f712c9SDave Chinner int i, j, dmxr; 30530f712c9SDave Chinner __be64 *pp, *thispa; /* pointer to block address */ 30630f712c9SDave Chinner xfs_bmbt_key_t *prevp, *keyp; 30730f712c9SDave Chinner 30830f712c9SDave Chinner ASSERT(be16_to_cpu(block->bb_level) > 0); 30930f712c9SDave Chinner 31030f712c9SDave Chinner prevp = NULL; 31130f712c9SDave Chinner for( i = 1; i <= xfs_btree_get_numrecs(block); i++) { 31230f712c9SDave Chinner dmxr = mp->m_bmap_dmxr[0]; 31330f712c9SDave Chinner keyp = XFS_BMBT_KEY_ADDR(mp, block, i); 31430f712c9SDave Chinner 31530f712c9SDave Chinner if (prevp) { 31630f712c9SDave Chinner ASSERT(be64_to_cpu(prevp->br_startoff) < 31730f712c9SDave Chinner be64_to_cpu(keyp->br_startoff)); 31830f712c9SDave Chinner } 31930f712c9SDave Chinner prevp = keyp; 32030f712c9SDave Chinner 32130f712c9SDave Chinner /* 32230f712c9SDave Chinner * Compare the block numbers to see if there are dups. 32330f712c9SDave Chinner */ 32430f712c9SDave Chinner if (root) 32530f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, i, sz); 32630f712c9SDave Chinner else 32730f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, i, dmxr); 32830f712c9SDave Chinner 32930f712c9SDave Chinner for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) { 33030f712c9SDave Chinner if (root) 33130f712c9SDave Chinner thispa = XFS_BMAP_BROOT_PTR_ADDR(mp, block, j, sz); 33230f712c9SDave Chinner else 33330f712c9SDave Chinner thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr); 33430f712c9SDave Chinner if (*thispa == *pp) { 33530f712c9SDave Chinner xfs_warn(mp, "%s: thispa(%d) == pp(%d) %Ld", 33630f712c9SDave Chinner __func__, j, i, 33730f712c9SDave Chinner (unsigned long long)be64_to_cpu(*thispa)); 33830f712c9SDave Chinner panic("%s: ptrs are equal in node\n", 33930f712c9SDave Chinner __func__); 34030f712c9SDave Chinner } 34130f712c9SDave Chinner } 34230f712c9SDave Chinner } 34330f712c9SDave Chinner } 34430f712c9SDave Chinner 34530f712c9SDave Chinner /* 34630f712c9SDave Chinner * Check that the extents for the inode ip are in the right order in all 347e3543819SDave Chinner * btree leaves. THis becomes prohibitively expensive for large extent count 348e3543819SDave Chinner * files, so don't bother with inodes that have more than 10,000 extents in 349e3543819SDave Chinner * them. The btree record ordering checks will still be done, so for such large 350e3543819SDave Chinner * bmapbt constructs that is going to catch most corruptions. 35130f712c9SDave Chinner */ 35230f712c9SDave Chinner STATIC void 35330f712c9SDave Chinner xfs_bmap_check_leaf_extents( 35430f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor or null */ 35530f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 35630f712c9SDave Chinner int whichfork) /* data or attr fork */ 35730f712c9SDave Chinner { 35830f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 35930f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 36030f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 36130f712c9SDave Chinner int error; /* error return value */ 36230f712c9SDave Chinner xfs_extnum_t i=0, j; /* index into the extents list */ 36330f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 36430f712c9SDave Chinner int level; /* btree level, for checking */ 36530f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 36630f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 36730f712c9SDave Chinner xfs_bmbt_rec_t *ep; /* pointer to current extent */ 36830f712c9SDave Chinner xfs_bmbt_rec_t last = {0, 0}; /* last extent in prev block */ 36930f712c9SDave Chinner xfs_bmbt_rec_t *nextp; /* pointer to next extent */ 37030f712c9SDave Chinner int bp_release = 0; 37130f712c9SDave Chinner 37230f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) { 37330f712c9SDave Chinner return; 37430f712c9SDave Chinner } 37530f712c9SDave Chinner 376e3543819SDave Chinner /* skip large extent count inodes */ 377e3543819SDave Chinner if (ip->i_d.di_nextents > 10000) 378e3543819SDave Chinner return; 379e3543819SDave Chinner 38030f712c9SDave Chinner bno = NULLFSBLOCK; 38130f712c9SDave Chinner mp = ip->i_mount; 38230f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 38330f712c9SDave Chinner block = ifp->if_broot; 38430f712c9SDave Chinner /* 38530f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 38630f712c9SDave Chinner */ 38730f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 38830f712c9SDave Chinner ASSERT(level > 0); 38930f712c9SDave Chinner xfs_check_block(block, mp, 1, ifp->if_broot_bytes); 39030f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 39130f712c9SDave Chinner bno = be64_to_cpu(*pp); 39230f712c9SDave Chinner 393d5cf09baSChristoph Hellwig ASSERT(bno != NULLFSBLOCK); 39430f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); 39530f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); 39630f712c9SDave Chinner 39730f712c9SDave Chinner /* 39830f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 39930f712c9SDave Chinner * pointer (leftmost) at each level. 40030f712c9SDave Chinner */ 40130f712c9SDave Chinner while (level-- > 0) { 40230f712c9SDave Chinner /* See if buf is in cur first */ 40330f712c9SDave Chinner bp_release = 0; 40430f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 40530f712c9SDave Chinner if (!bp) { 40630f712c9SDave Chinner bp_release = 1; 40730f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 40830f712c9SDave Chinner XFS_BMAP_BTREE_REF, 40930f712c9SDave Chinner &xfs_bmbt_buf_ops); 41030f712c9SDave Chinner if (error) 41130f712c9SDave Chinner goto error_norelse; 41230f712c9SDave Chinner } 41330f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 41430f712c9SDave Chinner if (level == 0) 41530f712c9SDave Chinner break; 41630f712c9SDave Chinner 41730f712c9SDave Chinner /* 41830f712c9SDave Chinner * Check this block for basic sanity (increasing keys and 41930f712c9SDave Chinner * no duplicate blocks). 42030f712c9SDave Chinner */ 42130f712c9SDave Chinner 42230f712c9SDave Chinner xfs_check_block(block, mp, 0, 0); 42330f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 42430f712c9SDave Chinner bno = be64_to_cpu(*pp); 425c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 426c29aad41SEric Sandeen XFS_FSB_SANITY_CHECK(mp, bno), error0); 42730f712c9SDave Chinner if (bp_release) { 42830f712c9SDave Chinner bp_release = 0; 42930f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 43030f712c9SDave Chinner } 43130f712c9SDave Chinner } 43230f712c9SDave Chinner 43330f712c9SDave Chinner /* 43430f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 43530f712c9SDave Chinner */ 43630f712c9SDave Chinner i = 0; 43730f712c9SDave Chinner 43830f712c9SDave Chinner /* 43930f712c9SDave Chinner * Loop over all leaf nodes checking that all extents are in the right order. 44030f712c9SDave Chinner */ 44130f712c9SDave Chinner for (;;) { 44230f712c9SDave Chinner xfs_fsblock_t nextbno; 44330f712c9SDave Chinner xfs_extnum_t num_recs; 44430f712c9SDave Chinner 44530f712c9SDave Chinner 44630f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 44730f712c9SDave Chinner 44830f712c9SDave Chinner /* 44930f712c9SDave Chinner * Read-ahead the next leaf block, if any. 45030f712c9SDave Chinner */ 45130f712c9SDave Chinner 45230f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 45330f712c9SDave Chinner 45430f712c9SDave Chinner /* 45530f712c9SDave Chinner * Check all the extents to make sure they are OK. 45630f712c9SDave Chinner * If we had a previous block, the last entry should 45730f712c9SDave Chinner * conform with the first entry in this one. 45830f712c9SDave Chinner */ 45930f712c9SDave Chinner 46030f712c9SDave Chinner ep = XFS_BMBT_REC_ADDR(mp, block, 1); 46130f712c9SDave Chinner if (i) { 46230f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(&last) + 46330f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(&last) <= 46430f712c9SDave Chinner xfs_bmbt_disk_get_startoff(ep)); 46530f712c9SDave Chinner } 46630f712c9SDave Chinner for (j = 1; j < num_recs; j++) { 46730f712c9SDave Chinner nextp = XFS_BMBT_REC_ADDR(mp, block, j + 1); 46830f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(ep) + 46930f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(ep) <= 47030f712c9SDave Chinner xfs_bmbt_disk_get_startoff(nextp)); 47130f712c9SDave Chinner ep = nextp; 47230f712c9SDave Chinner } 47330f712c9SDave Chinner 47430f712c9SDave Chinner last = *ep; 47530f712c9SDave Chinner i += num_recs; 47630f712c9SDave Chinner if (bp_release) { 47730f712c9SDave Chinner bp_release = 0; 47830f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 47930f712c9SDave Chinner } 48030f712c9SDave Chinner bno = nextbno; 48130f712c9SDave Chinner /* 48230f712c9SDave Chinner * If we've reached the end, stop. 48330f712c9SDave Chinner */ 48430f712c9SDave Chinner if (bno == NULLFSBLOCK) 48530f712c9SDave Chinner break; 48630f712c9SDave Chinner 48730f712c9SDave Chinner bp_release = 0; 48830f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 48930f712c9SDave Chinner if (!bp) { 49030f712c9SDave Chinner bp_release = 1; 49130f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 49230f712c9SDave Chinner XFS_BMAP_BTREE_REF, 49330f712c9SDave Chinner &xfs_bmbt_buf_ops); 49430f712c9SDave Chinner if (error) 49530f712c9SDave Chinner goto error_norelse; 49630f712c9SDave Chinner } 49730f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 49830f712c9SDave Chinner } 499a5fd276bSLuis de Bethencourt 50030f712c9SDave Chinner return; 50130f712c9SDave Chinner 50230f712c9SDave Chinner error0: 50330f712c9SDave Chinner xfs_warn(mp, "%s: at error0", __func__); 50430f712c9SDave Chinner if (bp_release) 50530f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 50630f712c9SDave Chinner error_norelse: 50730f712c9SDave Chinner xfs_warn(mp, "%s: BAD after btree leaves for %d extents", 50830f712c9SDave Chinner __func__, i); 50930f712c9SDave Chinner panic("%s: CORRUPTED BTREE OR SOMETHING", __func__); 51030f712c9SDave Chinner return; 51130f712c9SDave Chinner } 51230f712c9SDave Chinner 51330f712c9SDave Chinner /* 51430f712c9SDave Chinner * Add bmap trace insert entries for all the contents of the extent records. 51530f712c9SDave Chinner */ 51630f712c9SDave Chinner void 51730f712c9SDave Chinner xfs_bmap_trace_exlist( 51830f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 51930f712c9SDave Chinner xfs_extnum_t cnt, /* count of entries in the list */ 52030f712c9SDave Chinner int whichfork, /* data or attr fork */ 52130f712c9SDave Chinner unsigned long caller_ip) 52230f712c9SDave Chinner { 52330f712c9SDave Chinner xfs_extnum_t idx; /* extent record index */ 52430f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 52530f712c9SDave Chinner int state = 0; 52630f712c9SDave Chinner 52730f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 52830f712c9SDave Chinner state |= BMAP_ATTRFORK; 52930f712c9SDave Chinner 53030f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 5315d829300SEric Sandeen ASSERT(cnt == xfs_iext_count(ifp)); 53230f712c9SDave Chinner for (idx = 0; idx < cnt; idx++) 53330f712c9SDave Chinner trace_xfs_extlist(ip, idx, whichfork, caller_ip); 53430f712c9SDave Chinner } 53530f712c9SDave Chinner 53630f712c9SDave Chinner /* 53730f712c9SDave Chinner * Validate that the bmbt_irecs being returned from bmapi are valid 53830f712c9SDave Chinner * given the caller's original parameters. Specifically check the 53930f712c9SDave Chinner * ranges of the returned irecs to ensure that they only extend beyond 54030f712c9SDave Chinner * the given parameters if the XFS_BMAPI_ENTIRE flag was set. 54130f712c9SDave Chinner */ 54230f712c9SDave Chinner STATIC void 54330f712c9SDave Chinner xfs_bmap_validate_ret( 54430f712c9SDave Chinner xfs_fileoff_t bno, 54530f712c9SDave Chinner xfs_filblks_t len, 54630f712c9SDave Chinner int flags, 54730f712c9SDave Chinner xfs_bmbt_irec_t *mval, 54830f712c9SDave Chinner int nmap, 54930f712c9SDave Chinner int ret_nmap) 55030f712c9SDave Chinner { 55130f712c9SDave Chinner int i; /* index to map values */ 55230f712c9SDave Chinner 55330f712c9SDave Chinner ASSERT(ret_nmap <= nmap); 55430f712c9SDave Chinner 55530f712c9SDave Chinner for (i = 0; i < ret_nmap; i++) { 55630f712c9SDave Chinner ASSERT(mval[i].br_blockcount > 0); 55730f712c9SDave Chinner if (!(flags & XFS_BMAPI_ENTIRE)) { 55830f712c9SDave Chinner ASSERT(mval[i].br_startoff >= bno); 55930f712c9SDave Chinner ASSERT(mval[i].br_blockcount <= len); 56030f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount <= 56130f712c9SDave Chinner bno + len); 56230f712c9SDave Chinner } else { 56330f712c9SDave Chinner ASSERT(mval[i].br_startoff < bno + len); 56430f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount > 56530f712c9SDave Chinner bno); 56630f712c9SDave Chinner } 56730f712c9SDave Chinner ASSERT(i == 0 || 56830f712c9SDave Chinner mval[i - 1].br_startoff + mval[i - 1].br_blockcount == 56930f712c9SDave Chinner mval[i].br_startoff); 57030f712c9SDave Chinner ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK && 57130f712c9SDave Chinner mval[i].br_startblock != HOLESTARTBLOCK); 57230f712c9SDave Chinner ASSERT(mval[i].br_state == XFS_EXT_NORM || 57330f712c9SDave Chinner mval[i].br_state == XFS_EXT_UNWRITTEN); 57430f712c9SDave Chinner } 57530f712c9SDave Chinner } 57630f712c9SDave Chinner 57730f712c9SDave Chinner #else 57830f712c9SDave Chinner #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0) 57930f712c9SDave Chinner #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) 58030f712c9SDave Chinner #endif /* DEBUG */ 58130f712c9SDave Chinner 58230f712c9SDave Chinner /* 58330f712c9SDave Chinner * bmap free list manipulation functions 58430f712c9SDave Chinner */ 58530f712c9SDave Chinner 58630f712c9SDave Chinner /* 58730f712c9SDave Chinner * Add the extent to the list of extents to be free at transaction end. 58830f712c9SDave Chinner * The list is maintained sorted (by block number). 58930f712c9SDave Chinner */ 59030f712c9SDave Chinner void 59130f712c9SDave Chinner xfs_bmap_add_free( 592340785ccSDarrick J. Wong struct xfs_mount *mp, 593340785ccSDarrick J. Wong struct xfs_defer_ops *dfops, 594340785ccSDarrick J. Wong xfs_fsblock_t bno, 595340785ccSDarrick J. Wong xfs_filblks_t len, 596340785ccSDarrick J. Wong struct xfs_owner_info *oinfo) 59730f712c9SDave Chinner { 598310a75a3SDarrick J. Wong struct xfs_extent_free_item *new; /* new element */ 59930f712c9SDave Chinner #ifdef DEBUG 60030f712c9SDave Chinner xfs_agnumber_t agno; 60130f712c9SDave Chinner xfs_agblock_t agbno; 60230f712c9SDave Chinner 60330f712c9SDave Chinner ASSERT(bno != NULLFSBLOCK); 60430f712c9SDave Chinner ASSERT(len > 0); 60530f712c9SDave Chinner ASSERT(len <= MAXEXTLEN); 60630f712c9SDave Chinner ASSERT(!isnullstartblock(bno)); 60730f712c9SDave Chinner agno = XFS_FSB_TO_AGNO(mp, bno); 60830f712c9SDave Chinner agbno = XFS_FSB_TO_AGBNO(mp, bno); 60930f712c9SDave Chinner ASSERT(agno < mp->m_sb.sb_agcount); 61030f712c9SDave Chinner ASSERT(agbno < mp->m_sb.sb_agblocks); 61130f712c9SDave Chinner ASSERT(len < mp->m_sb.sb_agblocks); 61230f712c9SDave Chinner ASSERT(agbno + len <= mp->m_sb.sb_agblocks); 61330f712c9SDave Chinner #endif 61430f712c9SDave Chinner ASSERT(xfs_bmap_free_item_zone != NULL); 615340785ccSDarrick J. Wong 61630f712c9SDave Chinner new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP); 617310a75a3SDarrick J. Wong new->xefi_startblock = bno; 618310a75a3SDarrick J. Wong new->xefi_blockcount = (xfs_extlen_t)len; 619340785ccSDarrick J. Wong if (oinfo) 620340785ccSDarrick J. Wong new->xefi_oinfo = *oinfo; 621340785ccSDarrick J. Wong else 622340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&new->xefi_oinfo); 623ba9e7802SDarrick J. Wong trace_xfs_bmap_free_defer(mp, XFS_FSB_TO_AGNO(mp, bno), 0, 624ba9e7802SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bno), len); 6252c3234d1SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_FREE, &new->xefi_list); 62630f712c9SDave Chinner } 62730f712c9SDave Chinner 62830f712c9SDave Chinner /* 62930f712c9SDave Chinner * Inode fork format manipulation functions 63030f712c9SDave Chinner */ 63130f712c9SDave Chinner 63230f712c9SDave Chinner /* 63330f712c9SDave Chinner * Transform a btree format file with only one leaf node, where the 63430f712c9SDave Chinner * extents list will fit in the inode, into an extents format file. 63530f712c9SDave Chinner * Since the file extents are already in-core, all we have to do is 63630f712c9SDave Chinner * give up the space for the btree root and pitch the leaf block. 63730f712c9SDave Chinner */ 63830f712c9SDave Chinner STATIC int /* error */ 63930f712c9SDave Chinner xfs_bmap_btree_to_extents( 64030f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 64130f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 64230f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor */ 64330f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 64430f712c9SDave Chinner int whichfork) /* data or attr fork */ 64530f712c9SDave Chinner { 64630f712c9SDave Chinner /* REFERENCED */ 64730f712c9SDave Chinner struct xfs_btree_block *cblock;/* child btree block */ 64830f712c9SDave Chinner xfs_fsblock_t cbno; /* child block number */ 64930f712c9SDave Chinner xfs_buf_t *cbp; /* child block's buffer */ 65030f712c9SDave Chinner int error; /* error return value */ 65130f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork data */ 65230f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 65330f712c9SDave Chinner __be64 *pp; /* ptr to block address */ 65430f712c9SDave Chinner struct xfs_btree_block *rblock;/* root btree block */ 655340785ccSDarrick J. Wong struct xfs_owner_info oinfo; 65630f712c9SDave Chinner 65730f712c9SDave Chinner mp = ip->i_mount; 65830f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 65960b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 66030f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 66130f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 66230f712c9SDave Chinner rblock = ifp->if_broot; 66330f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_level) == 1); 66430f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1); 66530f712c9SDave Chinner ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1); 66630f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes); 66730f712c9SDave Chinner cbno = be64_to_cpu(*pp); 66830f712c9SDave Chinner *logflagsp = 0; 66930f712c9SDave Chinner #ifdef DEBUG 67030f712c9SDave Chinner if ((error = xfs_btree_check_lptr(cur, cbno, 1))) 67130f712c9SDave Chinner return error; 67230f712c9SDave Chinner #endif 67330f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp, XFS_BMAP_BTREE_REF, 67430f712c9SDave Chinner &xfs_bmbt_buf_ops); 67530f712c9SDave Chinner if (error) 67630f712c9SDave Chinner return error; 67730f712c9SDave Chinner cblock = XFS_BUF_TO_BLOCK(cbp); 67830f712c9SDave Chinner if ((error = xfs_btree_check_block(cur, cblock, 0, cbp))) 67930f712c9SDave Chinner return error; 680340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&oinfo, ip->i_ino, whichfork); 681340785ccSDarrick J. Wong xfs_bmap_add_free(mp, cur->bc_private.b.dfops, cbno, 1, &oinfo); 68230f712c9SDave Chinner ip->i_d.di_nblocks--; 68330f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); 68430f712c9SDave Chinner xfs_trans_binval(tp, cbp); 68530f712c9SDave Chinner if (cur->bc_bufs[0] == cbp) 68630f712c9SDave Chinner cur->bc_bufs[0] = NULL; 68730f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 68830f712c9SDave Chinner ASSERT(ifp->if_broot == NULL); 68930f712c9SDave Chinner ASSERT((ifp->if_flags & XFS_IFBROOT) == 0); 69030f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 69130f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 69230f712c9SDave Chinner return 0; 69330f712c9SDave Chinner } 69430f712c9SDave Chinner 69530f712c9SDave Chinner /* 69630f712c9SDave Chinner * Convert an extents-format file into a btree-format file. 69730f712c9SDave Chinner * The new file will have a root block (in the inode) and a single child block. 69830f712c9SDave Chinner */ 69930f712c9SDave Chinner STATIC int /* error */ 70030f712c9SDave Chinner xfs_bmap_extents_to_btree( 70130f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 70230f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 70330f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first-block-allocated */ 7042c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks freed in xaction */ 70530f712c9SDave Chinner xfs_btree_cur_t **curp, /* cursor returned to caller */ 70630f712c9SDave Chinner int wasdel, /* converting a delayed alloc */ 70730f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 70830f712c9SDave Chinner int whichfork) /* data or attr fork */ 70930f712c9SDave Chinner { 71030f712c9SDave Chinner struct xfs_btree_block *ablock; /* allocated (child) bt block */ 71130f712c9SDave Chinner xfs_buf_t *abp; /* buffer for ablock */ 71230f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 71330f712c9SDave Chinner xfs_bmbt_rec_t *arp; /* child record pointer */ 71430f712c9SDave Chinner struct xfs_btree_block *block; /* btree root block */ 71530f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 71630f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent record pointer */ 71730f712c9SDave Chinner int error; /* error return value */ 71830f712c9SDave Chinner xfs_extnum_t i, cnt; /* extent record index */ 71930f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 72030f712c9SDave Chinner xfs_bmbt_key_t *kp; /* root block key pointer */ 72130f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 72230f712c9SDave Chinner xfs_extnum_t nextents; /* number of file extents */ 72330f712c9SDave Chinner xfs_bmbt_ptr_t *pp; /* root block address pointer */ 72430f712c9SDave Chinner 72530f712c9SDave Chinner mp = ip->i_mount; 72660b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 72730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 72830f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS); 72930f712c9SDave Chinner 73030f712c9SDave Chinner /* 73130f712c9SDave Chinner * Make space in the inode incore. 73230f712c9SDave Chinner */ 73330f712c9SDave Chinner xfs_iroot_realloc(ip, 1, whichfork); 73430f712c9SDave Chinner ifp->if_flags |= XFS_IFBROOT; 73530f712c9SDave Chinner 73630f712c9SDave Chinner /* 73730f712c9SDave Chinner * Fill in the root. 73830f712c9SDave Chinner */ 73930f712c9SDave Chinner block = ifp->if_broot; 74030f712c9SDave Chinner if (xfs_sb_version_hascrc(&mp->m_sb)) 74130f712c9SDave Chinner xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL, 74230f712c9SDave Chinner XFS_BMAP_CRC_MAGIC, 1, 1, ip->i_ino, 74330f712c9SDave Chinner XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS); 74430f712c9SDave Chinner else 74530f712c9SDave Chinner xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL, 74630f712c9SDave Chinner XFS_BMAP_MAGIC, 1, 1, ip->i_ino, 74730f712c9SDave Chinner XFS_BTREE_LONG_PTRS); 74830f712c9SDave Chinner 74930f712c9SDave Chinner /* 75030f712c9SDave Chinner * Need a cursor. Can't allocate until bb_level is filled in. 75130f712c9SDave Chinner */ 75230f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 75330f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 7542c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 75530f712c9SDave Chinner cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 75630f712c9SDave Chinner /* 75730f712c9SDave Chinner * Convert to a btree with two levels, one record in root. 75830f712c9SDave Chinner */ 75930f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE); 76030f712c9SDave Chinner memset(&args, 0, sizeof(args)); 76130f712c9SDave Chinner args.tp = tp; 76230f712c9SDave Chinner args.mp = mp; 763340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&args.oinfo, ip->i_ino, whichfork); 76430f712c9SDave Chinner args.firstblock = *firstblock; 76530f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 76630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 76730f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino); 7682c3234d1SDarrick J. Wong } else if (dfops->dop_low) { 76990e2056dSDarrick J. Wong try_another_ag: 77030f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 77130f712c9SDave Chinner args.fsbno = *firstblock; 77230f712c9SDave Chinner } else { 77330f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 77430f712c9SDave Chinner args.fsbno = *firstblock; 77530f712c9SDave Chinner } 77630f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 77730f712c9SDave Chinner args.wasdel = wasdel; 77830f712c9SDave Chinner *logflagsp = 0; 77930f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) { 78030f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 78130f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 78230f712c9SDave Chinner return error; 78330f712c9SDave Chinner } 78490e2056dSDarrick J. Wong 78590e2056dSDarrick J. Wong /* 78690e2056dSDarrick J. Wong * During a CoW operation, the allocation and bmbt updates occur in 78790e2056dSDarrick J. Wong * different transactions. The mapping code tries to put new bmbt 78890e2056dSDarrick J. Wong * blocks near extents being mapped, but the only way to guarantee this 78990e2056dSDarrick J. Wong * is if the alloc and the mapping happen in a single transaction that 79090e2056dSDarrick J. Wong * has a block reservation. That isn't the case here, so if we run out 79190e2056dSDarrick J. Wong * of space we'll try again with another AG. 79290e2056dSDarrick J. Wong */ 79390e2056dSDarrick J. Wong if (xfs_sb_version_hasreflink(&cur->bc_mp->m_sb) && 79490e2056dSDarrick J. Wong args.fsbno == NULLFSBLOCK && 79590e2056dSDarrick J. Wong args.type == XFS_ALLOCTYPE_NEAR_BNO) { 79690e2056dSDarrick J. Wong dfops->dop_low = true; 79790e2056dSDarrick J. Wong goto try_another_ag; 79890e2056dSDarrick J. Wong } 79930f712c9SDave Chinner /* 80030f712c9SDave Chinner * Allocation can't fail, the space was reserved. 80130f712c9SDave Chinner */ 80230f712c9SDave Chinner ASSERT(args.fsbno != NULLFSBLOCK); 80330f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 80430f712c9SDave Chinner args.agno == XFS_FSB_TO_AGNO(mp, *firstblock) || 8052c3234d1SDarrick J. Wong (dfops->dop_low && 80630f712c9SDave Chinner args.agno > XFS_FSB_TO_AGNO(mp, *firstblock))); 80730f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock = args.fsbno; 80830f712c9SDave Chinner cur->bc_private.b.allocated++; 80930f712c9SDave Chinner ip->i_d.di_nblocks++; 81030f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); 81130f712c9SDave Chinner abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0); 81230f712c9SDave Chinner /* 81330f712c9SDave Chinner * Fill in the child block. 81430f712c9SDave Chinner */ 81530f712c9SDave Chinner abp->b_ops = &xfs_bmbt_buf_ops; 81630f712c9SDave Chinner ablock = XFS_BUF_TO_BLOCK(abp); 81730f712c9SDave Chinner if (xfs_sb_version_hascrc(&mp->m_sb)) 81830f712c9SDave Chinner xfs_btree_init_block_int(mp, ablock, abp->b_bn, 81930f712c9SDave Chinner XFS_BMAP_CRC_MAGIC, 0, 0, ip->i_ino, 82030f712c9SDave Chinner XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS); 82130f712c9SDave Chinner else 82230f712c9SDave Chinner xfs_btree_init_block_int(mp, ablock, abp->b_bn, 82330f712c9SDave Chinner XFS_BMAP_MAGIC, 0, 0, ip->i_ino, 82430f712c9SDave Chinner XFS_BTREE_LONG_PTRS); 82530f712c9SDave Chinner 82630f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 8275d829300SEric Sandeen nextents = xfs_iext_count(ifp); 82830f712c9SDave Chinner for (cnt = i = 0; i < nextents; i++) { 82930f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, i); 83030f712c9SDave Chinner if (!isnullstartblock(xfs_bmbt_get_startblock(ep))) { 83130f712c9SDave Chinner arp->l0 = cpu_to_be64(ep->l0); 83230f712c9SDave Chinner arp->l1 = cpu_to_be64(ep->l1); 83330f712c9SDave Chinner arp++; cnt++; 83430f712c9SDave Chinner } 83530f712c9SDave Chinner } 83630f712c9SDave Chinner ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork)); 83730f712c9SDave Chinner xfs_btree_set_numrecs(ablock, cnt); 83830f712c9SDave Chinner 83930f712c9SDave Chinner /* 84030f712c9SDave Chinner * Fill in the root key and pointer. 84130f712c9SDave Chinner */ 84230f712c9SDave Chinner kp = XFS_BMBT_KEY_ADDR(mp, block, 1); 84330f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 84430f712c9SDave Chinner kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp)); 84530f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur, 84630f712c9SDave Chinner be16_to_cpu(block->bb_level))); 84730f712c9SDave Chinner *pp = cpu_to_be64(args.fsbno); 84830f712c9SDave Chinner 84930f712c9SDave Chinner /* 85030f712c9SDave Chinner * Do all this logging at the end so that 85130f712c9SDave Chinner * the root is at the right level. 85230f712c9SDave Chinner */ 85330f712c9SDave Chinner xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS); 85430f712c9SDave Chinner xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs)); 85530f712c9SDave Chinner ASSERT(*curp == NULL); 85630f712c9SDave Chinner *curp = cur; 85730f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork); 85830f712c9SDave Chinner return 0; 85930f712c9SDave Chinner } 86030f712c9SDave Chinner 86130f712c9SDave Chinner /* 86230f712c9SDave Chinner * Convert a local file to an extents file. 86330f712c9SDave Chinner * This code is out of bounds for data forks of regular files, 86430f712c9SDave Chinner * since the file data needs to get logged so things will stay consistent. 86530f712c9SDave Chinner * (The bmap-level manipulations are ok, though). 86630f712c9SDave Chinner */ 86730f712c9SDave Chinner void 86830f712c9SDave Chinner xfs_bmap_local_to_extents_empty( 86930f712c9SDave Chinner struct xfs_inode *ip, 87030f712c9SDave Chinner int whichfork) 87130f712c9SDave Chinner { 87230f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 87330f712c9SDave Chinner 87460b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 87530f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 87630f712c9SDave Chinner ASSERT(ifp->if_bytes == 0); 87730f712c9SDave Chinner ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0); 87830f712c9SDave Chinner 87930f712c9SDave Chinner xfs_bmap_forkoff_reset(ip, whichfork); 88030f712c9SDave Chinner ifp->if_flags &= ~XFS_IFINLINE; 88130f712c9SDave Chinner ifp->if_flags |= XFS_IFEXTENTS; 88230f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 88330f712c9SDave Chinner } 88430f712c9SDave Chinner 88530f712c9SDave Chinner 88630f712c9SDave Chinner STATIC int /* error */ 88730f712c9SDave Chinner xfs_bmap_local_to_extents( 88830f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 88930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 89030f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated in xaction */ 89130f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed by transaction */ 89230f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 89330f712c9SDave Chinner int whichfork, 89430f712c9SDave Chinner void (*init_fn)(struct xfs_trans *tp, 89530f712c9SDave Chinner struct xfs_buf *bp, 89630f712c9SDave Chinner struct xfs_inode *ip, 89730f712c9SDave Chinner struct xfs_ifork *ifp)) 89830f712c9SDave Chinner { 89930f712c9SDave Chinner int error = 0; 90030f712c9SDave Chinner int flags; /* logging flags returned */ 90130f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 90230f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 90330f712c9SDave Chinner xfs_buf_t *bp; /* buffer for extent block */ 90430f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent record pointer */ 90530f712c9SDave Chinner 90630f712c9SDave Chinner /* 90730f712c9SDave Chinner * We don't want to deal with the case of keeping inode data inline yet. 90830f712c9SDave Chinner * So sending the data fork of a regular inode is invalid. 90930f712c9SDave Chinner */ 910c19b3b05SDave Chinner ASSERT(!(S_ISREG(VFS_I(ip)->i_mode) && whichfork == XFS_DATA_FORK)); 91130f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 91230f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 91330f712c9SDave Chinner 91430f712c9SDave Chinner if (!ifp->if_bytes) { 91530f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 91630f712c9SDave Chinner flags = XFS_ILOG_CORE; 91730f712c9SDave Chinner goto done; 91830f712c9SDave Chinner } 91930f712c9SDave Chinner 92030f712c9SDave Chinner flags = 0; 92130f712c9SDave Chinner error = 0; 92230f712c9SDave Chinner ASSERT((ifp->if_flags & (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == 92330f712c9SDave Chinner XFS_IFINLINE); 92430f712c9SDave Chinner memset(&args, 0, sizeof(args)); 92530f712c9SDave Chinner args.tp = tp; 92630f712c9SDave Chinner args.mp = ip->i_mount; 927340785ccSDarrick J. Wong xfs_rmap_ino_owner(&args.oinfo, ip->i_ino, whichfork, 0); 92830f712c9SDave Chinner args.firstblock = *firstblock; 92930f712c9SDave Chinner /* 93030f712c9SDave Chinner * Allocate a block. We know we need only one, since the 93130f712c9SDave Chinner * file currently fits in an inode. 93230f712c9SDave Chinner */ 93330f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 93490e2056dSDarrick J. Wong try_another_ag: 93530f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino); 93630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 93730f712c9SDave Chinner } else { 93830f712c9SDave Chinner args.fsbno = *firstblock; 93930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 94030f712c9SDave Chinner } 94130f712c9SDave Chinner args.total = total; 94230f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 94330f712c9SDave Chinner error = xfs_alloc_vextent(&args); 94430f712c9SDave Chinner if (error) 94530f712c9SDave Chinner goto done; 94630f712c9SDave Chinner 94790e2056dSDarrick J. Wong /* 94890e2056dSDarrick J. Wong * During a CoW operation, the allocation and bmbt updates occur in 94990e2056dSDarrick J. Wong * different transactions. The mapping code tries to put new bmbt 95090e2056dSDarrick J. Wong * blocks near extents being mapped, but the only way to guarantee this 95190e2056dSDarrick J. Wong * is if the alloc and the mapping happen in a single transaction that 95290e2056dSDarrick J. Wong * has a block reservation. That isn't the case here, so if we run out 95390e2056dSDarrick J. Wong * of space we'll try again with another AG. 95490e2056dSDarrick J. Wong */ 95590e2056dSDarrick J. Wong if (xfs_sb_version_hasreflink(&ip->i_mount->m_sb) && 95690e2056dSDarrick J. Wong args.fsbno == NULLFSBLOCK && 95790e2056dSDarrick J. Wong args.type == XFS_ALLOCTYPE_NEAR_BNO) { 95890e2056dSDarrick J. Wong goto try_another_ag; 95990e2056dSDarrick J. Wong } 96030f712c9SDave Chinner /* Can't fail, the space was reserved. */ 96130f712c9SDave Chinner ASSERT(args.fsbno != NULLFSBLOCK); 96230f712c9SDave Chinner ASSERT(args.len == 1); 96330f712c9SDave Chinner *firstblock = args.fsbno; 96430f712c9SDave Chinner bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); 96530f712c9SDave Chinner 966fe22d552SDave Chinner /* 967b7cdc66bSBrian Foster * Initialize the block, copy the data and log the remote buffer. 968fe22d552SDave Chinner * 969b7cdc66bSBrian Foster * The callout is responsible for logging because the remote format 970b7cdc66bSBrian Foster * might differ from the local format and thus we don't know how much to 971b7cdc66bSBrian Foster * log here. Note that init_fn must also set the buffer log item type 972b7cdc66bSBrian Foster * correctly. 973fe22d552SDave Chinner */ 97430f712c9SDave Chinner init_fn(tp, bp, ip, ifp); 97530f712c9SDave Chinner 976b7cdc66bSBrian Foster /* account for the change in fork size */ 97730f712c9SDave Chinner xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); 97830f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 97930f712c9SDave Chinner flags |= XFS_ILOG_CORE; 98030f712c9SDave Chinner 98130f712c9SDave Chinner xfs_iext_add(ifp, 0, 1); 98230f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, 0); 98330f712c9SDave Chinner xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM); 98430f712c9SDave Chinner trace_xfs_bmap_post_update(ip, 0, 98530f712c9SDave Chinner whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0, 98630f712c9SDave Chinner _THIS_IP_); 98730f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 1); 98830f712c9SDave Chinner ip->i_d.di_nblocks = 1; 98930f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, 99030f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 1L); 99130f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 99230f712c9SDave Chinner 99330f712c9SDave Chinner done: 99430f712c9SDave Chinner *logflagsp = flags; 99530f712c9SDave Chinner return error; 99630f712c9SDave Chinner } 99730f712c9SDave Chinner 99830f712c9SDave Chinner /* 99930f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle btree format files. 100030f712c9SDave Chinner */ 100130f712c9SDave Chinner STATIC int /* error */ 100230f712c9SDave Chinner xfs_bmap_add_attrfork_btree( 100330f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 100430f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 100530f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 10062c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 100730f712c9SDave Chinner int *flags) /* inode logging flags */ 100830f712c9SDave Chinner { 100930f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 101030f712c9SDave Chinner int error; /* error return value */ 101130f712c9SDave Chinner xfs_mount_t *mp; /* file system mount struct */ 101230f712c9SDave Chinner int stat; /* newroot status */ 101330f712c9SDave Chinner 101430f712c9SDave Chinner mp = ip->i_mount; 101530f712c9SDave Chinner if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip)) 101630f712c9SDave Chinner *flags |= XFS_ILOG_DBROOT; 101730f712c9SDave Chinner else { 101830f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); 10192c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 102030f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 102130f712c9SDave Chinner if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat))) 102230f712c9SDave Chinner goto error0; 102330f712c9SDave Chinner /* must be at least one entry */ 1024c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, stat == 1, error0); 102530f712c9SDave Chinner if ((error = xfs_btree_new_iroot(cur, flags, &stat))) 102630f712c9SDave Chinner goto error0; 102730f712c9SDave Chinner if (stat == 0) { 102830f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 10292451337dSDave Chinner return -ENOSPC; 103030f712c9SDave Chinner } 103130f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock; 103230f712c9SDave Chinner cur->bc_private.b.allocated = 0; 103330f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 103430f712c9SDave Chinner } 103530f712c9SDave Chinner return 0; 103630f712c9SDave Chinner error0: 103730f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 103830f712c9SDave Chinner return error; 103930f712c9SDave Chinner } 104030f712c9SDave Chinner 104130f712c9SDave Chinner /* 104230f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle extents format files. 104330f712c9SDave Chinner */ 104430f712c9SDave Chinner STATIC int /* error */ 104530f712c9SDave Chinner xfs_bmap_add_attrfork_extents( 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_btree_cur_t *cur; /* bmap btree cursor */ 105330f712c9SDave Chinner int error; /* error return value */ 105430f712c9SDave Chinner 105530f712c9SDave Chinner if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip)) 105630f712c9SDave Chinner return 0; 105730f712c9SDave Chinner cur = NULL; 10582c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstblock, dfops, &cur, 0, 105930f712c9SDave Chinner flags, XFS_DATA_FORK); 106030f712c9SDave Chinner if (cur) { 106130f712c9SDave Chinner cur->bc_private.b.allocated = 0; 106230f712c9SDave Chinner xfs_btree_del_cursor(cur, 106330f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 106430f712c9SDave Chinner } 106530f712c9SDave Chinner return error; 106630f712c9SDave Chinner } 106730f712c9SDave Chinner 106830f712c9SDave Chinner /* 106930f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle local format files. Each 107030f712c9SDave Chinner * different data fork content type needs a different callout to do the 107130f712c9SDave Chinner * conversion. Some are basic and only require special block initialisation 107230f712c9SDave Chinner * callouts for the data formating, others (directories) are so specialised they 107330f712c9SDave Chinner * handle everything themselves. 107430f712c9SDave Chinner * 107530f712c9SDave Chinner * XXX (dgc): investigate whether directory conversion can use the generic 107630f712c9SDave Chinner * formatting callout. It should be possible - it's just a very complex 107730f712c9SDave Chinner * formatter. 107830f712c9SDave Chinner */ 107930f712c9SDave Chinner STATIC int /* error */ 108030f712c9SDave Chinner xfs_bmap_add_attrfork_local( 108130f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 108230f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 108330f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 10842c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 108530f712c9SDave Chinner int *flags) /* inode logging flags */ 108630f712c9SDave Chinner { 108730f712c9SDave Chinner xfs_da_args_t dargs; /* args for dir/attr code */ 108830f712c9SDave Chinner 108930f712c9SDave Chinner if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) 109030f712c9SDave Chinner return 0; 109130f712c9SDave Chinner 1092c19b3b05SDave Chinner if (S_ISDIR(VFS_I(ip)->i_mode)) { 109330f712c9SDave Chinner memset(&dargs, 0, sizeof(dargs)); 109430f712c9SDave Chinner dargs.geo = ip->i_mount->m_dir_geo; 109530f712c9SDave Chinner dargs.dp = ip; 109630f712c9SDave Chinner dargs.firstblock = firstblock; 10972c3234d1SDarrick J. Wong dargs.dfops = dfops; 109830f712c9SDave Chinner dargs.total = dargs.geo->fsbcount; 109930f712c9SDave Chinner dargs.whichfork = XFS_DATA_FORK; 110030f712c9SDave Chinner dargs.trans = tp; 110130f712c9SDave Chinner return xfs_dir2_sf_to_block(&dargs); 110230f712c9SDave Chinner } 110330f712c9SDave Chinner 1104c19b3b05SDave Chinner if (S_ISLNK(VFS_I(ip)->i_mode)) 110530f712c9SDave Chinner return xfs_bmap_local_to_extents(tp, ip, firstblock, 1, 110630f712c9SDave Chinner flags, XFS_DATA_FORK, 110730f712c9SDave Chinner xfs_symlink_local_to_remote); 110830f712c9SDave Chinner 110930f712c9SDave Chinner /* should only be called for types that support local format data */ 111030f712c9SDave Chinner ASSERT(0); 11112451337dSDave Chinner return -EFSCORRUPTED; 111230f712c9SDave Chinner } 111330f712c9SDave Chinner 111430f712c9SDave Chinner /* 111530f712c9SDave Chinner * Convert inode from non-attributed to attributed. 111630f712c9SDave Chinner * Must not be in a transaction, ip must not be locked. 111730f712c9SDave Chinner */ 111830f712c9SDave Chinner int /* error code */ 111930f712c9SDave Chinner xfs_bmap_add_attrfork( 112030f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 112130f712c9SDave Chinner int size, /* space new attribute needs */ 112230f712c9SDave Chinner int rsvd) /* xact may use reserved blks */ 112330f712c9SDave Chinner { 112430f712c9SDave Chinner xfs_fsblock_t firstblock; /* 1st block/ag allocated */ 11252c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; /* freed extent records */ 112630f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 112730f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */ 112830f712c9SDave Chinner int blks; /* space reservation */ 112930f712c9SDave Chinner int version = 1; /* superblock attr version */ 113030f712c9SDave Chinner int logflags; /* logging flags */ 113130f712c9SDave Chinner int error; /* error return value */ 113230f712c9SDave Chinner 113330f712c9SDave Chinner ASSERT(XFS_IFORK_Q(ip) == 0); 113430f712c9SDave Chinner 113530f712c9SDave Chinner mp = ip->i_mount; 113630f712c9SDave Chinner ASSERT(!XFS_NOT_DQATTACHED(mp, ip)); 1137253f4911SChristoph Hellwig 113830f712c9SDave Chinner blks = XFS_ADDAFORK_SPACE_RES(mp); 1139253f4911SChristoph Hellwig 1140253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_addafork, blks, 0, 1141253f4911SChristoph Hellwig rsvd ? XFS_TRANS_RESERVE : 0, &tp); 1142253f4911SChristoph Hellwig if (error) 114330f712c9SDave Chinner return error; 1144253f4911SChristoph Hellwig 114530f712c9SDave Chinner xfs_ilock(ip, XFS_ILOCK_EXCL); 114630f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ? 114730f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES : 114830f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS); 114930f712c9SDave Chinner if (error) 115030f712c9SDave Chinner goto trans_cancel; 115130f712c9SDave Chinner if (XFS_IFORK_Q(ip)) 115230f712c9SDave Chinner goto trans_cancel; 115330f712c9SDave Chinner if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) { 115430f712c9SDave Chinner /* 115530f712c9SDave Chinner * For inodes coming from pre-6.2 filesystems. 115630f712c9SDave Chinner */ 115730f712c9SDave Chinner ASSERT(ip->i_d.di_aformat == 0); 115830f712c9SDave Chinner ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS; 115930f712c9SDave Chinner } 116030f712c9SDave Chinner ASSERT(ip->i_d.di_anextents == 0); 116130f712c9SDave Chinner 116230f712c9SDave Chinner xfs_trans_ijoin(tp, ip, 0); 116330f712c9SDave Chinner xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 116430f712c9SDave Chinner 116530f712c9SDave Chinner switch (ip->i_d.di_format) { 116630f712c9SDave Chinner case XFS_DINODE_FMT_DEV: 116730f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3; 116830f712c9SDave Chinner break; 116930f712c9SDave Chinner case XFS_DINODE_FMT_UUID: 117030f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3; 117130f712c9SDave Chinner break; 117230f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 117330f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 117430f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 117530f712c9SDave Chinner ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size); 117630f712c9SDave Chinner if (!ip->i_d.di_forkoff) 117730f712c9SDave Chinner ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3; 117830f712c9SDave Chinner else if (mp->m_flags & XFS_MOUNT_ATTR2) 117930f712c9SDave Chinner version = 2; 118030f712c9SDave Chinner break; 118130f712c9SDave Chinner default: 118230f712c9SDave Chinner ASSERT(0); 11832451337dSDave Chinner error = -EINVAL; 118430f712c9SDave Chinner goto trans_cancel; 118530f712c9SDave Chinner } 118630f712c9SDave Chinner 118730f712c9SDave Chinner ASSERT(ip->i_afp == NULL); 118830f712c9SDave Chinner ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP); 118930f712c9SDave Chinner ip->i_afp->if_flags = XFS_IFEXTENTS; 119030f712c9SDave Chinner logflags = 0; 11912c3234d1SDarrick J. Wong xfs_defer_init(&dfops, &firstblock); 119230f712c9SDave Chinner switch (ip->i_d.di_format) { 119330f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 11942c3234d1SDarrick J. Wong error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &dfops, 119530f712c9SDave Chinner &logflags); 119630f712c9SDave Chinner break; 119730f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 119830f712c9SDave Chinner error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock, 11992c3234d1SDarrick J. Wong &dfops, &logflags); 120030f712c9SDave Chinner break; 120130f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 12022c3234d1SDarrick J. Wong error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &dfops, 120330f712c9SDave Chinner &logflags); 120430f712c9SDave Chinner break; 120530f712c9SDave Chinner default: 120630f712c9SDave Chinner error = 0; 120730f712c9SDave Chinner break; 120830f712c9SDave Chinner } 120930f712c9SDave Chinner if (logflags) 121030f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 121130f712c9SDave Chinner if (error) 121230f712c9SDave Chinner goto bmap_cancel; 121330f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb) || 121430f712c9SDave Chinner (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) { 121561e63ecbSDave Chinner bool log_sb = false; 121630f712c9SDave Chinner 121730f712c9SDave Chinner spin_lock(&mp->m_sb_lock); 121830f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb)) { 121930f712c9SDave Chinner xfs_sb_version_addattr(&mp->m_sb); 122061e63ecbSDave Chinner log_sb = true; 122130f712c9SDave Chinner } 122230f712c9SDave Chinner if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) { 122330f712c9SDave Chinner xfs_sb_version_addattr2(&mp->m_sb); 122461e63ecbSDave Chinner log_sb = true; 122530f712c9SDave Chinner } 122630f712c9SDave Chinner spin_unlock(&mp->m_sb_lock); 122761e63ecbSDave Chinner if (log_sb) 122861e63ecbSDave Chinner xfs_log_sb(tp); 122930f712c9SDave Chinner } 123030f712c9SDave Chinner 12312c3234d1SDarrick J. Wong error = xfs_defer_finish(&tp, &dfops, NULL); 123230f712c9SDave Chinner if (error) 123330f712c9SDave Chinner goto bmap_cancel; 123470393313SChristoph Hellwig error = xfs_trans_commit(tp); 123530f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 123630f712c9SDave Chinner return error; 123730f712c9SDave Chinner 123830f712c9SDave Chinner bmap_cancel: 12392c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 124030f712c9SDave Chinner trans_cancel: 12414906e215SChristoph Hellwig xfs_trans_cancel(tp); 124230f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 124330f712c9SDave Chinner return error; 124430f712c9SDave Chinner } 124530f712c9SDave Chinner 124630f712c9SDave Chinner /* 124730f712c9SDave Chinner * Internal and external extent tree search functions. 124830f712c9SDave Chinner */ 124930f712c9SDave Chinner 125030f712c9SDave Chinner /* 125130f712c9SDave Chinner * Read in the extents to if_extents. 125230f712c9SDave Chinner * All inode fields are set up by caller, we just traverse the btree 125330f712c9SDave Chinner * and copy the records in. If the file system cannot contain unwritten 125430f712c9SDave Chinner * extents, the records are checked for no "state" flags. 125530f712c9SDave Chinner */ 125630f712c9SDave Chinner int /* error */ 125730f712c9SDave Chinner xfs_bmap_read_extents( 125830f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 125930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 126030f712c9SDave Chinner int whichfork) /* data or attr fork */ 126130f712c9SDave Chinner { 126230f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 126330f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 126430f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 126530f712c9SDave Chinner int error; /* error return value */ 126630f712c9SDave Chinner xfs_exntfmt_t exntf; /* XFS_EXTFMT_NOSTATE, if checking */ 126730f712c9SDave Chinner xfs_extnum_t i, j; /* index into the extents list */ 126830f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 126930f712c9SDave Chinner int level; /* btree level, for checking */ 127030f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 127130f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 127230f712c9SDave Chinner /* REFERENCED */ 127330f712c9SDave Chinner xfs_extnum_t room; /* number of entries there's room for */ 127430f712c9SDave Chinner 127530f712c9SDave Chinner bno = NULLFSBLOCK; 127630f712c9SDave Chinner mp = ip->i_mount; 127730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 127830f712c9SDave Chinner exntf = (whichfork != XFS_DATA_FORK) ? XFS_EXTFMT_NOSTATE : 127930f712c9SDave Chinner XFS_EXTFMT_INODE(ip); 128030f712c9SDave Chinner block = ifp->if_broot; 128130f712c9SDave Chinner /* 128230f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 128330f712c9SDave Chinner */ 128430f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 128530f712c9SDave Chinner ASSERT(level > 0); 128630f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 128730f712c9SDave Chinner bno = be64_to_cpu(*pp); 1288d5cf09baSChristoph Hellwig ASSERT(bno != NULLFSBLOCK); 128930f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); 129030f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); 129130f712c9SDave Chinner /* 129230f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 129330f712c9SDave Chinner * pointer (leftmost) at each level. 129430f712c9SDave Chinner */ 129530f712c9SDave Chinner while (level-- > 0) { 129630f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 129730f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 129830f712c9SDave Chinner if (error) 129930f712c9SDave Chinner return error; 130030f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 130130f712c9SDave Chinner if (level == 0) 130230f712c9SDave Chinner break; 130330f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 130430f712c9SDave Chinner bno = be64_to_cpu(*pp); 1305c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 1306c29aad41SEric Sandeen XFS_FSB_SANITY_CHECK(mp, bno), error0); 130730f712c9SDave Chinner xfs_trans_brelse(tp, bp); 130830f712c9SDave Chinner } 130930f712c9SDave Chinner /* 131030f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 131130f712c9SDave Chinner */ 13125d829300SEric Sandeen room = xfs_iext_count(ifp); 131330f712c9SDave Chinner i = 0; 131430f712c9SDave Chinner /* 131530f712c9SDave Chinner * Loop over all leaf nodes. Copy information to the extent records. 131630f712c9SDave Chinner */ 131730f712c9SDave Chinner for (;;) { 131830f712c9SDave Chinner xfs_bmbt_rec_t *frp; 131930f712c9SDave Chinner xfs_fsblock_t nextbno; 132030f712c9SDave Chinner xfs_extnum_t num_recs; 132130f712c9SDave Chinner xfs_extnum_t start; 132230f712c9SDave Chinner 132330f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 132430f712c9SDave Chinner if (unlikely(i + num_recs > room)) { 132530f712c9SDave Chinner ASSERT(i + num_recs <= room); 132630f712c9SDave Chinner xfs_warn(ip->i_mount, 132730f712c9SDave Chinner "corrupt dinode %Lu, (btree extents).", 132830f712c9SDave Chinner (unsigned long long) ip->i_ino); 132930f712c9SDave Chinner XFS_CORRUPTION_ERROR("xfs_bmap_read_extents(1)", 133030f712c9SDave Chinner XFS_ERRLEVEL_LOW, ip->i_mount, block); 133130f712c9SDave Chinner goto error0; 133230f712c9SDave Chinner } 133330f712c9SDave Chinner /* 133430f712c9SDave Chinner * Read-ahead the next leaf block, if any. 133530f712c9SDave Chinner */ 133630f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 133730f712c9SDave Chinner if (nextbno != NULLFSBLOCK) 133830f712c9SDave Chinner xfs_btree_reada_bufl(mp, nextbno, 1, 133930f712c9SDave Chinner &xfs_bmbt_buf_ops); 134030f712c9SDave Chinner /* 134130f712c9SDave Chinner * Copy records into the extent records. 134230f712c9SDave Chinner */ 134330f712c9SDave Chinner frp = XFS_BMBT_REC_ADDR(mp, block, 1); 134430f712c9SDave Chinner start = i; 134530f712c9SDave Chinner for (j = 0; j < num_recs; j++, i++, frp++) { 134630f712c9SDave Chinner xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i); 134730f712c9SDave Chinner trp->l0 = be64_to_cpu(frp->l0); 134830f712c9SDave Chinner trp->l1 = be64_to_cpu(frp->l1); 134930f712c9SDave Chinner } 135030f712c9SDave Chinner if (exntf == XFS_EXTFMT_NOSTATE) { 135130f712c9SDave Chinner /* 135230f712c9SDave Chinner * Check all attribute bmap btree records and 135330f712c9SDave Chinner * any "older" data bmap btree records for a 135430f712c9SDave Chinner * set bit in the "extent flag" position. 135530f712c9SDave Chinner */ 135630f712c9SDave Chinner if (unlikely(xfs_check_nostate_extents(ifp, 135730f712c9SDave Chinner start, num_recs))) { 135830f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmap_read_extents(2)", 135930f712c9SDave Chinner XFS_ERRLEVEL_LOW, 136030f712c9SDave Chinner ip->i_mount); 136130f712c9SDave Chinner goto error0; 136230f712c9SDave Chinner } 136330f712c9SDave Chinner } 136430f712c9SDave Chinner xfs_trans_brelse(tp, bp); 136530f712c9SDave Chinner bno = nextbno; 136630f712c9SDave Chinner /* 136730f712c9SDave Chinner * If we've reached the end, stop. 136830f712c9SDave Chinner */ 136930f712c9SDave Chinner if (bno == NULLFSBLOCK) 137030f712c9SDave Chinner break; 137130f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 137230f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 137330f712c9SDave Chinner if (error) 137430f712c9SDave Chinner return error; 137530f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 137630f712c9SDave Chinner } 13775d829300SEric Sandeen ASSERT(i == xfs_iext_count(ifp)); 137830f712c9SDave Chinner ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork)); 137930f712c9SDave Chinner XFS_BMAP_TRACE_EXLIST(ip, i, whichfork); 138030f712c9SDave Chinner return 0; 138130f712c9SDave Chinner error0: 138230f712c9SDave Chinner xfs_trans_brelse(tp, bp); 13832451337dSDave Chinner return -EFSCORRUPTED; 138430f712c9SDave Chinner } 138530f712c9SDave Chinner 138630f712c9SDave Chinner /* 138730f712c9SDave Chinner * Returns the file-relative block number of the first unused block(s) 138830f712c9SDave Chinner * in the file with at least "len" logically contiguous blocks free. 138930f712c9SDave Chinner * This is the lowest-address hole if the file has holes, else the first block 139030f712c9SDave Chinner * past the end of file. 139130f712c9SDave Chinner * Return 0 if the file is currently local (in-inode). 139230f712c9SDave Chinner */ 139330f712c9SDave Chinner int /* error */ 139430f712c9SDave Chinner xfs_bmap_first_unused( 139530f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 139630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 139730f712c9SDave Chinner xfs_extlen_t len, /* size of hole to find */ 139830f712c9SDave Chinner xfs_fileoff_t *first_unused, /* unused block */ 139930f712c9SDave Chinner int whichfork) /* data or attr fork */ 140030f712c9SDave Chinner { 140130f712c9SDave Chinner int error; /* error return value */ 140230f712c9SDave Chinner int idx; /* extent record index */ 140330f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 140430f712c9SDave Chinner xfs_fileoff_t lastaddr; /* last block number seen */ 140530f712c9SDave Chinner xfs_fileoff_t lowest; /* lowest useful block */ 140630f712c9SDave Chinner xfs_fileoff_t max; /* starting useful block */ 140730f712c9SDave Chinner xfs_fileoff_t off; /* offset for this block */ 140830f712c9SDave Chinner xfs_extnum_t nextents; /* number of extent entries */ 140930f712c9SDave Chinner 141030f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE || 141130f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS || 141230f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 141330f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { 141430f712c9SDave Chinner *first_unused = 0; 141530f712c9SDave Chinner return 0; 141630f712c9SDave Chinner } 141730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 141830f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 141930f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 142030f712c9SDave Chinner return error; 142130f712c9SDave Chinner lowest = *first_unused; 14225d829300SEric Sandeen nextents = xfs_iext_count(ifp); 142330f712c9SDave Chinner for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) { 142430f712c9SDave Chinner xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); 142530f712c9SDave Chinner off = xfs_bmbt_get_startoff(ep); 142630f712c9SDave Chinner /* 142730f712c9SDave Chinner * See if the hole before this extent will work. 142830f712c9SDave Chinner */ 142930f712c9SDave Chinner if (off >= lowest + len && off - max >= len) { 143030f712c9SDave Chinner *first_unused = max; 143130f712c9SDave Chinner return 0; 143230f712c9SDave Chinner } 143330f712c9SDave Chinner lastaddr = off + xfs_bmbt_get_blockcount(ep); 143430f712c9SDave Chinner max = XFS_FILEOFF_MAX(lastaddr, lowest); 143530f712c9SDave Chinner } 143630f712c9SDave Chinner *first_unused = max; 143730f712c9SDave Chinner return 0; 143830f712c9SDave Chinner } 143930f712c9SDave Chinner 144030f712c9SDave Chinner /* 144130f712c9SDave Chinner * Returns the file-relative block number of the last block - 1 before 144230f712c9SDave Chinner * last_block (input value) in the file. 144330f712c9SDave Chinner * This is not based on i_size, it is based on the extent records. 144430f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 144530f712c9SDave Chinner */ 144630f712c9SDave Chinner int /* error */ 144730f712c9SDave Chinner xfs_bmap_last_before( 144886685f7bSChristoph Hellwig struct xfs_trans *tp, /* transaction pointer */ 144986685f7bSChristoph Hellwig struct xfs_inode *ip, /* incore inode */ 145030f712c9SDave Chinner xfs_fileoff_t *last_block, /* last block */ 145130f712c9SDave Chinner int whichfork) /* data or attr fork */ 145230f712c9SDave Chinner { 145386685f7bSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 145486685f7bSChristoph Hellwig struct xfs_bmbt_irec got; 145586685f7bSChristoph Hellwig xfs_extnum_t idx; 145686685f7bSChristoph Hellwig int error; 145730f712c9SDave Chinner 145886685f7bSChristoph Hellwig switch (XFS_IFORK_FORMAT(ip, whichfork)) { 145986685f7bSChristoph Hellwig case XFS_DINODE_FMT_LOCAL: 146030f712c9SDave Chinner *last_block = 0; 146130f712c9SDave Chinner return 0; 146286685f7bSChristoph Hellwig case XFS_DINODE_FMT_BTREE: 146386685f7bSChristoph Hellwig case XFS_DINODE_FMT_EXTENTS: 146486685f7bSChristoph Hellwig break; 146586685f7bSChristoph Hellwig default: 146686685f7bSChristoph Hellwig return -EIO; 146730f712c9SDave Chinner } 146886685f7bSChristoph Hellwig 146986685f7bSChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 147086685f7bSChristoph Hellwig error = xfs_iread_extents(tp, ip, whichfork); 147186685f7bSChristoph Hellwig if (error) 147230f712c9SDave Chinner return error; 147330f712c9SDave Chinner } 147486685f7bSChristoph Hellwig 147586685f7bSChristoph Hellwig if (xfs_iext_lookup_extent(ip, ifp, *last_block - 1, &idx, &got)) { 147686685f7bSChristoph Hellwig if (got.br_startoff <= *last_block - 1) 147786685f7bSChristoph Hellwig return 0; 147886685f7bSChristoph Hellwig } 147986685f7bSChristoph Hellwig 148086685f7bSChristoph Hellwig if (xfs_iext_get_extent(ifp, idx - 1, &got)) { 148186685f7bSChristoph Hellwig *last_block = got.br_startoff + got.br_blockcount; 148286685f7bSChristoph Hellwig return 0; 148386685f7bSChristoph Hellwig } 148486685f7bSChristoph Hellwig 148586685f7bSChristoph Hellwig *last_block = 0; 148630f712c9SDave Chinner return 0; 148730f712c9SDave Chinner } 148830f712c9SDave Chinner 148930f712c9SDave Chinner int 149030f712c9SDave Chinner xfs_bmap_last_extent( 149130f712c9SDave Chinner struct xfs_trans *tp, 149230f712c9SDave Chinner struct xfs_inode *ip, 149330f712c9SDave Chinner int whichfork, 149430f712c9SDave Chinner struct xfs_bmbt_irec *rec, 149530f712c9SDave Chinner int *is_empty) 149630f712c9SDave Chinner { 149730f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 149830f712c9SDave Chinner int error; 149930f712c9SDave Chinner int nextents; 150030f712c9SDave Chinner 150130f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 150230f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 150330f712c9SDave Chinner if (error) 150430f712c9SDave Chinner return error; 150530f712c9SDave Chinner } 150630f712c9SDave Chinner 15075d829300SEric Sandeen nextents = xfs_iext_count(ifp); 150830f712c9SDave Chinner if (nextents == 0) { 150930f712c9SDave Chinner *is_empty = 1; 151030f712c9SDave Chinner return 0; 151130f712c9SDave Chinner } 151230f712c9SDave Chinner 151330f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, nextents - 1), rec); 151430f712c9SDave Chinner *is_empty = 0; 151530f712c9SDave Chinner return 0; 151630f712c9SDave Chinner } 151730f712c9SDave Chinner 151830f712c9SDave Chinner /* 151930f712c9SDave Chinner * Check the last inode extent to determine whether this allocation will result 152030f712c9SDave Chinner * in blocks being allocated at the end of the file. When we allocate new data 152130f712c9SDave Chinner * blocks at the end of the file which do not start at the previous data block, 152230f712c9SDave Chinner * we will try to align the new blocks at stripe unit boundaries. 152330f712c9SDave Chinner * 152430f712c9SDave Chinner * Returns 1 in bma->aeof if the file (fork) is empty as any new write will be 152530f712c9SDave Chinner * at, or past the EOF. 152630f712c9SDave Chinner */ 152730f712c9SDave Chinner STATIC int 152830f712c9SDave Chinner xfs_bmap_isaeof( 152930f712c9SDave Chinner struct xfs_bmalloca *bma, 153030f712c9SDave Chinner int whichfork) 153130f712c9SDave Chinner { 153230f712c9SDave Chinner struct xfs_bmbt_irec rec; 153330f712c9SDave Chinner int is_empty; 153430f712c9SDave Chinner int error; 153530f712c9SDave Chinner 153630f712c9SDave Chinner bma->aeof = 0; 153730f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, bma->ip, whichfork, &rec, 153830f712c9SDave Chinner &is_empty); 153930f712c9SDave Chinner if (error) 154030f712c9SDave Chinner return error; 154130f712c9SDave Chinner 154230f712c9SDave Chinner if (is_empty) { 154330f712c9SDave Chinner bma->aeof = 1; 154430f712c9SDave Chinner return 0; 154530f712c9SDave Chinner } 154630f712c9SDave Chinner 154730f712c9SDave Chinner /* 154830f712c9SDave Chinner * Check if we are allocation or past the last extent, or at least into 154930f712c9SDave Chinner * the last delayed allocated extent. 155030f712c9SDave Chinner */ 155130f712c9SDave Chinner bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount || 155230f712c9SDave Chinner (bma->offset >= rec.br_startoff && 155330f712c9SDave Chinner isnullstartblock(rec.br_startblock)); 155430f712c9SDave Chinner return 0; 155530f712c9SDave Chinner } 155630f712c9SDave Chinner 155730f712c9SDave Chinner /* 155830f712c9SDave Chinner * Returns the file-relative block number of the first block past eof in 155930f712c9SDave Chinner * the file. This is not based on i_size, it is based on the extent records. 156030f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 156130f712c9SDave Chinner */ 156230f712c9SDave Chinner int 156330f712c9SDave Chinner xfs_bmap_last_offset( 156430f712c9SDave Chinner struct xfs_inode *ip, 156530f712c9SDave Chinner xfs_fileoff_t *last_block, 156630f712c9SDave Chinner int whichfork) 156730f712c9SDave Chinner { 156830f712c9SDave Chinner struct xfs_bmbt_irec rec; 156930f712c9SDave Chinner int is_empty; 157030f712c9SDave Chinner int error; 157130f712c9SDave Chinner 157230f712c9SDave Chinner *last_block = 0; 157330f712c9SDave Chinner 157430f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) 157530f712c9SDave Chinner return 0; 157630f712c9SDave Chinner 157730f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && 157830f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 15792451337dSDave Chinner return -EIO; 158030f712c9SDave Chinner 158130f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, &is_empty); 158230f712c9SDave Chinner if (error || is_empty) 158330f712c9SDave Chinner return error; 158430f712c9SDave Chinner 158530f712c9SDave Chinner *last_block = rec.br_startoff + rec.br_blockcount; 158630f712c9SDave Chinner return 0; 158730f712c9SDave Chinner } 158830f712c9SDave Chinner 158930f712c9SDave Chinner /* 159030f712c9SDave Chinner * Returns whether the selected fork of the inode has exactly one 159130f712c9SDave Chinner * block or not. For the data fork we check this matches di_size, 159230f712c9SDave Chinner * implying the file's range is 0..bsize-1. 159330f712c9SDave Chinner */ 159430f712c9SDave Chinner int /* 1=>1 block, 0=>otherwise */ 159530f712c9SDave Chinner xfs_bmap_one_block( 159630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 159730f712c9SDave Chinner int whichfork) /* data or attr fork */ 159830f712c9SDave Chinner { 159930f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* ptr to fork's extent */ 160030f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 160130f712c9SDave Chinner int rval; /* return value */ 160230f712c9SDave Chinner xfs_bmbt_irec_t s; /* internal version of extent */ 160330f712c9SDave Chinner 160430f712c9SDave Chinner #ifndef DEBUG 160530f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) 160630f712c9SDave Chinner return XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize; 160730f712c9SDave Chinner #endif /* !DEBUG */ 160830f712c9SDave Chinner if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1) 160930f712c9SDave Chinner return 0; 161030f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 161130f712c9SDave Chinner return 0; 161230f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 161330f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 161430f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, 0); 161530f712c9SDave Chinner xfs_bmbt_get_all(ep, &s); 161630f712c9SDave Chinner rval = s.br_startoff == 0 && s.br_blockcount == 1; 161730f712c9SDave Chinner if (rval && whichfork == XFS_DATA_FORK) 161830f712c9SDave Chinner ASSERT(XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize); 161930f712c9SDave Chinner return rval; 162030f712c9SDave Chinner } 162130f712c9SDave Chinner 162230f712c9SDave Chinner /* 162330f712c9SDave Chinner * Extent tree manipulation functions used during allocation. 162430f712c9SDave Chinner */ 162530f712c9SDave Chinner 162630f712c9SDave Chinner /* 162730f712c9SDave Chinner * Convert a delayed allocation to a real allocation. 162830f712c9SDave Chinner */ 162930f712c9SDave Chinner STATIC int /* error */ 163030f712c9SDave Chinner xfs_bmap_add_extent_delay_real( 163160b4984fSDarrick J. Wong struct xfs_bmalloca *bma, 163260b4984fSDarrick J. Wong int whichfork) 163330f712c9SDave Chinner { 163430f712c9SDave Chinner struct xfs_bmbt_irec *new = &bma->got; 163530f712c9SDave Chinner int diff; /* temp value */ 163630f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ 163730f712c9SDave Chinner int error; /* error return value */ 163830f712c9SDave Chinner int i; /* temp state */ 163930f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 164030f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 164130f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 164230f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 164330f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 164430f712c9SDave Chinner int state = 0;/* state bits, accessed thru macros */ 164530f712c9SDave Chinner xfs_filblks_t da_new; /* new count del alloc blocks used */ 164630f712c9SDave Chinner xfs_filblks_t da_old; /* old count del alloc blocks used */ 164730f712c9SDave Chinner xfs_filblks_t temp=0; /* value for da_new calculations */ 164830f712c9SDave Chinner xfs_filblks_t temp2=0;/* value for da_new calculations */ 164930f712c9SDave Chinner int tmp_rval; /* partial logging flags */ 1650c29aad41SEric Sandeen struct xfs_mount *mp; 165160b4984fSDarrick J. Wong xfs_extnum_t *nextents; 165230f712c9SDave Chinner 1653f1f96c49SEric Sandeen mp = bma->ip->i_mount; 16546d3eb1ecSDarrick J. Wong ifp = XFS_IFORK_PTR(bma->ip, whichfork); 165560b4984fSDarrick J. Wong ASSERT(whichfork != XFS_ATTR_FORK); 165660b4984fSDarrick J. Wong nextents = (whichfork == XFS_COW_FORK ? &bma->ip->i_cnextents : 165760b4984fSDarrick J. Wong &bma->ip->i_d.di_nextents); 165830f712c9SDave Chinner 165930f712c9SDave Chinner ASSERT(bma->idx >= 0); 16605d829300SEric Sandeen ASSERT(bma->idx <= xfs_iext_count(ifp)); 166130f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 166230f712c9SDave Chinner ASSERT(!bma->cur || 166330f712c9SDave Chinner (bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 166430f712c9SDave Chinner 1665ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 166630f712c9SDave Chinner 166730f712c9SDave Chinner #define LEFT r[0] 166830f712c9SDave Chinner #define RIGHT r[1] 166930f712c9SDave Chinner #define PREV r[2] 167030f712c9SDave Chinner 167160b4984fSDarrick J. Wong if (whichfork == XFS_COW_FORK) 167260b4984fSDarrick J. Wong state |= BMAP_COWFORK; 167360b4984fSDarrick J. Wong 167430f712c9SDave Chinner /* 167530f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 167630f712c9SDave Chinner */ 167730f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 167830f712c9SDave Chinner xfs_bmbt_get_all(ep, &PREV); 167930f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 168030f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 168130f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 168230f712c9SDave Chinner 168330f712c9SDave Chinner da_old = startblockval(PREV.br_startblock); 168430f712c9SDave Chinner da_new = 0; 168530f712c9SDave Chinner 168630f712c9SDave Chinner /* 168730f712c9SDave Chinner * Set flags determining what part of the previous delayed allocation 168830f712c9SDave Chinner * extent is being replaced by a real allocation. 168930f712c9SDave Chinner */ 169030f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 169130f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 169230f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 169330f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 169430f712c9SDave Chinner 169530f712c9SDave Chinner /* 169630f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 169730f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 169830f712c9SDave Chinner */ 169930f712c9SDave Chinner if (bma->idx > 0) { 170030f712c9SDave Chinner state |= BMAP_LEFT_VALID; 170130f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &LEFT); 170230f712c9SDave Chinner 170330f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 170430f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 170530f712c9SDave Chinner } 170630f712c9SDave Chinner 170730f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 170830f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 170930f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 171030f712c9SDave Chinner LEFT.br_state == new->br_state && 171130f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 171230f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 171330f712c9SDave Chinner 171430f712c9SDave Chinner /* 171530f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 171630f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 171730f712c9SDave Chinner * Also check for all-three-contiguous being too large. 171830f712c9SDave Chinner */ 17195d829300SEric Sandeen if (bma->idx < xfs_iext_count(ifp) - 1) { 172030f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 172130f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx + 1), &RIGHT); 172230f712c9SDave Chinner 172330f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 172430f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 172530f712c9SDave Chinner } 172630f712c9SDave Chinner 172730f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 172830f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 172930f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 173030f712c9SDave Chinner new->br_state == RIGHT.br_state && 173130f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 173230f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 173330f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 173430f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 173530f712c9SDave Chinner BMAP_RIGHT_FILLING) || 173630f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 173730f712c9SDave Chinner <= MAXEXTLEN)) 173830f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 173930f712c9SDave Chinner 174030f712c9SDave Chinner error = 0; 174130f712c9SDave Chinner /* 174230f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 174330f712c9SDave Chinner */ 174430f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 174530f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 174630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 174730f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 174830f712c9SDave Chinner /* 174930f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 175030f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 175130f712c9SDave Chinner */ 175230f712c9SDave Chinner bma->idx--; 175330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 175430f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 175530f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 175630f712c9SDave Chinner RIGHT.br_blockcount); 175730f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 175830f712c9SDave Chinner 175930f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 2, state); 176060b4984fSDarrick J. Wong (*nextents)--; 176130f712c9SDave Chinner if (bma->cur == NULL) 176230f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 176330f712c9SDave Chinner else { 176430f712c9SDave Chinner rval = XFS_ILOG_CORE; 176530f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 176630f712c9SDave Chinner RIGHT.br_startblock, 176730f712c9SDave Chinner RIGHT.br_blockcount, &i); 176830f712c9SDave Chinner if (error) 176930f712c9SDave Chinner goto done; 1770c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 177130f712c9SDave Chinner error = xfs_btree_delete(bma->cur, &i); 177230f712c9SDave Chinner if (error) 177330f712c9SDave Chinner goto done; 1774c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 177530f712c9SDave Chinner error = xfs_btree_decrement(bma->cur, 0, &i); 177630f712c9SDave Chinner if (error) 177730f712c9SDave Chinner goto done; 1778c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 177930f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 178030f712c9SDave Chinner LEFT.br_startblock, 178130f712c9SDave Chinner LEFT.br_blockcount + 178230f712c9SDave Chinner PREV.br_blockcount + 178330f712c9SDave Chinner RIGHT.br_blockcount, LEFT.br_state); 178430f712c9SDave Chinner if (error) 178530f712c9SDave Chinner goto done; 178630f712c9SDave Chinner } 178730f712c9SDave Chinner break; 178830f712c9SDave Chinner 178930f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 179030f712c9SDave Chinner /* 179130f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 179230f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 179330f712c9SDave Chinner */ 179430f712c9SDave Chinner bma->idx--; 179530f712c9SDave Chinner 179630f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 179730f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 179830f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount); 179930f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 180030f712c9SDave Chinner 180130f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 180230f712c9SDave Chinner if (bma->cur == NULL) 180330f712c9SDave Chinner rval = XFS_ILOG_DEXT; 180430f712c9SDave Chinner else { 180530f712c9SDave Chinner rval = 0; 180630f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff, 180730f712c9SDave Chinner LEFT.br_startblock, LEFT.br_blockcount, 180830f712c9SDave Chinner &i); 180930f712c9SDave Chinner if (error) 181030f712c9SDave Chinner goto done; 1811c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 181230f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 181330f712c9SDave Chinner LEFT.br_startblock, 181430f712c9SDave Chinner LEFT.br_blockcount + 181530f712c9SDave Chinner PREV.br_blockcount, LEFT.br_state); 181630f712c9SDave Chinner if (error) 181730f712c9SDave Chinner goto done; 181830f712c9SDave Chinner } 181930f712c9SDave Chinner break; 182030f712c9SDave Chinner 182130f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 182230f712c9SDave Chinner /* 182330f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 182430f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 182530f712c9SDave Chinner */ 182630f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 182730f712c9SDave Chinner xfs_bmbt_set_startblock(ep, new->br_startblock); 182830f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 182930f712c9SDave Chinner PREV.br_blockcount + RIGHT.br_blockcount); 183030f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 183130f712c9SDave Chinner 183230f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 183330f712c9SDave Chinner if (bma->cur == NULL) 183430f712c9SDave Chinner rval = XFS_ILOG_DEXT; 183530f712c9SDave Chinner else { 183630f712c9SDave Chinner rval = 0; 183730f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 183830f712c9SDave Chinner RIGHT.br_startblock, 183930f712c9SDave Chinner RIGHT.br_blockcount, &i); 184030f712c9SDave Chinner if (error) 184130f712c9SDave Chinner goto done; 1842c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 184330f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, PREV.br_startoff, 184430f712c9SDave Chinner new->br_startblock, 184530f712c9SDave Chinner PREV.br_blockcount + 184630f712c9SDave Chinner RIGHT.br_blockcount, PREV.br_state); 184730f712c9SDave Chinner if (error) 184830f712c9SDave Chinner goto done; 184930f712c9SDave Chinner } 185030f712c9SDave Chinner break; 185130f712c9SDave Chinner 185230f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 185330f712c9SDave Chinner /* 185430f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 185530f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 185630f712c9SDave Chinner * the new one. 185730f712c9SDave Chinner */ 185830f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 185930f712c9SDave Chinner xfs_bmbt_set_startblock(ep, new->br_startblock); 186030f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 186130f712c9SDave Chinner 186260b4984fSDarrick J. Wong (*nextents)++; 186330f712c9SDave Chinner if (bma->cur == NULL) 186430f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 186530f712c9SDave Chinner else { 186630f712c9SDave Chinner rval = XFS_ILOG_CORE; 186730f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 186830f712c9SDave Chinner new->br_startblock, new->br_blockcount, 186930f712c9SDave Chinner &i); 187030f712c9SDave Chinner if (error) 187130f712c9SDave Chinner goto done; 1872c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 187330f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 187430f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 187530f712c9SDave Chinner if (error) 187630f712c9SDave Chinner goto done; 1877c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 187830f712c9SDave Chinner } 187930f712c9SDave Chinner break; 188030f712c9SDave Chinner 188130f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 188230f712c9SDave Chinner /* 188330f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 188430f712c9SDave Chinner * The left neighbor is contiguous. 188530f712c9SDave Chinner */ 188630f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx - 1, state, _THIS_IP_); 188730f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx - 1), 188830f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount); 188930f712c9SDave Chinner xfs_bmbt_set_startoff(ep, 189030f712c9SDave Chinner PREV.br_startoff + new->br_blockcount); 189130f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx - 1, state, _THIS_IP_); 189230f712c9SDave Chinner 189330f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 189430f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 189530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 189630f712c9SDave Chinner if (bma->cur == NULL) 189730f712c9SDave Chinner rval = XFS_ILOG_DEXT; 189830f712c9SDave Chinner else { 189930f712c9SDave Chinner rval = 0; 190030f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff, 190130f712c9SDave Chinner LEFT.br_startblock, LEFT.br_blockcount, 190230f712c9SDave Chinner &i); 190330f712c9SDave Chinner if (error) 190430f712c9SDave Chinner goto done; 1905c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 190630f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 190730f712c9SDave Chinner LEFT.br_startblock, 190830f712c9SDave Chinner LEFT.br_blockcount + 190930f712c9SDave Chinner new->br_blockcount, 191030f712c9SDave Chinner LEFT.br_state); 191130f712c9SDave Chinner if (error) 191230f712c9SDave Chinner goto done; 191330f712c9SDave Chinner } 191430f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 191530f712c9SDave Chinner startblockval(PREV.br_startblock)); 191630f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 191730f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 191830f712c9SDave Chinner 191930f712c9SDave Chinner bma->idx--; 192030f712c9SDave Chinner break; 192130f712c9SDave Chinner 192230f712c9SDave Chinner case BMAP_LEFT_FILLING: 192330f712c9SDave Chinner /* 192430f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 192530f712c9SDave Chinner * The left neighbor is not contiguous. 192630f712c9SDave Chinner */ 192730f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 192830f712c9SDave Chinner xfs_bmbt_set_startoff(ep, new_endoff); 192930f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 193030f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 193130f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx, 1, new, state); 193260b4984fSDarrick J. Wong (*nextents)++; 193330f712c9SDave Chinner if (bma->cur == NULL) 193430f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 193530f712c9SDave Chinner else { 193630f712c9SDave Chinner rval = XFS_ILOG_CORE; 193730f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 193830f712c9SDave Chinner new->br_startblock, new->br_blockcount, 193930f712c9SDave Chinner &i); 194030f712c9SDave Chinner if (error) 194130f712c9SDave Chinner goto done; 1942c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 194330f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 194430f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 194530f712c9SDave Chinner if (error) 194630f712c9SDave Chinner goto done; 1947c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 194830f712c9SDave Chinner } 194930f712c9SDave Chinner 19506d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 195130f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 19522c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, 19536d3eb1ecSDarrick J. Wong &bma->cur, 1, &tmp_rval, whichfork); 195430f712c9SDave Chinner rval |= tmp_rval; 195530f712c9SDave Chinner if (error) 195630f712c9SDave Chinner goto done; 195730f712c9SDave Chinner } 195830f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 195930f712c9SDave Chinner startblockval(PREV.br_startblock) - 196030f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 196130f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx + 1); 196230f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 196330f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 196430f712c9SDave Chinner break; 196530f712c9SDave Chinner 196630f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 196730f712c9SDave Chinner /* 196830f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 196930f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 197030f712c9SDave Chinner */ 197130f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 197230f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 197330f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 197430f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx + 1), 197530f712c9SDave Chinner new->br_startoff, new->br_startblock, 197630f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 197730f712c9SDave Chinner RIGHT.br_state); 197830f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 197930f712c9SDave Chinner if (bma->cur == NULL) 198030f712c9SDave Chinner rval = XFS_ILOG_DEXT; 198130f712c9SDave Chinner else { 198230f712c9SDave Chinner rval = 0; 198330f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 198430f712c9SDave Chinner RIGHT.br_startblock, 198530f712c9SDave Chinner RIGHT.br_blockcount, &i); 198630f712c9SDave Chinner if (error) 198730f712c9SDave Chinner goto done; 1988c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 198930f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, new->br_startoff, 199030f712c9SDave Chinner new->br_startblock, 199130f712c9SDave Chinner new->br_blockcount + 199230f712c9SDave Chinner RIGHT.br_blockcount, 199330f712c9SDave Chinner RIGHT.br_state); 199430f712c9SDave Chinner if (error) 199530f712c9SDave Chinner goto done; 199630f712c9SDave Chinner } 199730f712c9SDave Chinner 199830f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 199930f712c9SDave Chinner startblockval(PREV.br_startblock)); 200030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 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 BMAP_RIGHT_FILLING: 200830f712c9SDave Chinner /* 200930f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 201030f712c9SDave Chinner * The right neighbor is not contiguous. 201130f712c9SDave Chinner */ 201230f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 201330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 201430f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 201530f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx + 1, 1, new, state); 201660b4984fSDarrick J. Wong (*nextents)++; 201730f712c9SDave Chinner if (bma->cur == NULL) 201830f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 201930f712c9SDave Chinner else { 202030f712c9SDave Chinner rval = XFS_ILOG_CORE; 202130f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 202230f712c9SDave Chinner new->br_startblock, new->br_blockcount, 202330f712c9SDave Chinner &i); 202430f712c9SDave Chinner if (error) 202530f712c9SDave Chinner goto done; 2026c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 202730f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 202830f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 202930f712c9SDave Chinner if (error) 203030f712c9SDave Chinner goto done; 2031c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 203230f712c9SDave Chinner } 203330f712c9SDave Chinner 20346d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 203530f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 20362c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 1, 20376d3eb1ecSDarrick J. Wong &tmp_rval, whichfork); 203830f712c9SDave Chinner rval |= tmp_rval; 203930f712c9SDave Chinner if (error) 204030f712c9SDave Chinner goto done; 204130f712c9SDave Chinner } 204230f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 204330f712c9SDave Chinner startblockval(PREV.br_startblock) - 204430f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 204530f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 204630f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 204730f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 204830f712c9SDave Chinner 204930f712c9SDave Chinner bma->idx++; 205030f712c9SDave Chinner break; 205130f712c9SDave Chinner 205230f712c9SDave Chinner case 0: 205330f712c9SDave Chinner /* 205430f712c9SDave Chinner * Filling in the middle part of a previous delayed allocation. 205530f712c9SDave Chinner * Contiguity is impossible here. 205630f712c9SDave Chinner * This case is avoided almost all the time. 205730f712c9SDave Chinner * 205830f712c9SDave Chinner * We start with a delayed allocation: 205930f712c9SDave Chinner * 206030f712c9SDave Chinner * +ddddddddddddddddddddddddddddddddddddddddddddddddddddddd+ 206130f712c9SDave Chinner * PREV @ idx 206230f712c9SDave Chinner * 206330f712c9SDave Chinner * and we are allocating: 206430f712c9SDave Chinner * +rrrrrrrrrrrrrrrrr+ 206530f712c9SDave Chinner * new 206630f712c9SDave Chinner * 206730f712c9SDave Chinner * and we set it up for insertion as: 206830f712c9SDave Chinner * +ddddddddddddddddddd+rrrrrrrrrrrrrrrrr+ddddddddddddddddd+ 206930f712c9SDave Chinner * new 207030f712c9SDave Chinner * PREV @ idx LEFT RIGHT 207130f712c9SDave Chinner * inserted at idx + 1 207230f712c9SDave Chinner */ 207330f712c9SDave Chinner temp = new->br_startoff - PREV.br_startoff; 207430f712c9SDave Chinner temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff; 207530f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, 0, _THIS_IP_); 207630f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); /* truncate PREV */ 207730f712c9SDave Chinner LEFT = *new; 207830f712c9SDave Chinner RIGHT.br_state = PREV.br_state; 207930f712c9SDave Chinner RIGHT.br_startblock = nullstartblock( 208030f712c9SDave Chinner (int)xfs_bmap_worst_indlen(bma->ip, temp2)); 208130f712c9SDave Chinner RIGHT.br_startoff = new_endoff; 208230f712c9SDave Chinner RIGHT.br_blockcount = temp2; 208330f712c9SDave Chinner /* insert LEFT (r[0]) and RIGHT (r[1]) at the same time */ 208430f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx + 1, 2, &LEFT, state); 208560b4984fSDarrick J. Wong (*nextents)++; 208630f712c9SDave Chinner if (bma->cur == NULL) 208730f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 208830f712c9SDave Chinner else { 208930f712c9SDave Chinner rval = XFS_ILOG_CORE; 209030f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 209130f712c9SDave Chinner new->br_startblock, new->br_blockcount, 209230f712c9SDave Chinner &i); 209330f712c9SDave Chinner if (error) 209430f712c9SDave Chinner goto done; 2095c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 209630f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 209730f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 209830f712c9SDave Chinner if (error) 209930f712c9SDave Chinner goto done; 2100c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 210130f712c9SDave Chinner } 210230f712c9SDave Chinner 21036d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 210430f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 21052c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 21066d3eb1ecSDarrick J. Wong 1, &tmp_rval, whichfork); 210730f712c9SDave Chinner rval |= tmp_rval; 210830f712c9SDave Chinner if (error) 210930f712c9SDave Chinner goto done; 211030f712c9SDave Chinner } 211130f712c9SDave Chinner temp = xfs_bmap_worst_indlen(bma->ip, temp); 211230f712c9SDave Chinner temp2 = xfs_bmap_worst_indlen(bma->ip, temp2); 211330f712c9SDave Chinner diff = (int)(temp + temp2 - startblockval(PREV.br_startblock) - 211430f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 211530f712c9SDave Chinner if (diff > 0) { 21160d485adaSDave Chinner error = xfs_mod_fdblocks(bma->ip->i_mount, 21170d485adaSDave Chinner -((int64_t)diff), false); 211830f712c9SDave Chinner ASSERT(!error); 211930f712c9SDave Chinner if (error) 212030f712c9SDave Chinner goto done; 212130f712c9SDave Chinner } 212230f712c9SDave Chinner 212330f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 212430f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 212530f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 212630f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx + 2, state, _THIS_IP_); 212730f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, bma->idx + 2), 212830f712c9SDave Chinner nullstartblock((int)temp2)); 212930f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 2, state, _THIS_IP_); 213030f712c9SDave Chinner 213130f712c9SDave Chinner bma->idx++; 213230f712c9SDave Chinner da_new = temp + temp2; 213330f712c9SDave Chinner break; 213430f712c9SDave Chinner 213530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 213630f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 213730f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 213830f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 213930f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 214030f712c9SDave Chinner case BMAP_LEFT_CONTIG: 214130f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 214230f712c9SDave Chinner /* 214330f712c9SDave Chinner * These cases are all impossible. 214430f712c9SDave Chinner */ 214530f712c9SDave Chinner ASSERT(0); 214630f712c9SDave Chinner } 214730f712c9SDave Chinner 21489c194644SDarrick J. Wong /* add reverse mapping */ 21499c194644SDarrick J. Wong error = xfs_rmap_map_extent(mp, bma->dfops, bma->ip, whichfork, new); 21509c194644SDarrick J. Wong if (error) 21519c194644SDarrick J. Wong goto done; 21529c194644SDarrick J. Wong 215330f712c9SDave Chinner /* convert to a btree if necessary */ 21546d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 215530f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 215630f712c9SDave Chinner 215730f712c9SDave Chinner ASSERT(bma->cur == NULL); 215830f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 21592c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 21606d3eb1ecSDarrick J. Wong da_old > 0, &tmp_logflags, whichfork); 216130f712c9SDave Chinner bma->logflags |= tmp_logflags; 216230f712c9SDave Chinner if (error) 216330f712c9SDave Chinner goto done; 216430f712c9SDave Chinner } 216530f712c9SDave Chinner 216630f712c9SDave Chinner /* adjust for changes in reserved delayed indirect blocks */ 216730f712c9SDave Chinner if (da_old || da_new) { 216830f712c9SDave Chinner temp = da_new; 216930f712c9SDave Chinner if (bma->cur) 217030f712c9SDave Chinner temp += bma->cur->bc_private.b.allocated; 217130f712c9SDave Chinner ASSERT(temp <= da_old); 217230f712c9SDave Chinner if (temp < da_old) 21730d485adaSDave Chinner xfs_mod_fdblocks(bma->ip->i_mount, 21740d485adaSDave Chinner (int64_t)(da_old - temp), false); 217530f712c9SDave Chinner } 217630f712c9SDave Chinner 217730f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 217830f712c9SDave Chinner if (bma->cur) 217930f712c9SDave Chinner bma->cur->bc_private.b.allocated = 0; 218030f712c9SDave Chinner 21816d3eb1ecSDarrick J. Wong xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); 218230f712c9SDave Chinner done: 218360b4984fSDarrick J. Wong if (whichfork != XFS_COW_FORK) 218430f712c9SDave Chinner bma->logflags |= rval; 218530f712c9SDave Chinner return error; 218630f712c9SDave Chinner #undef LEFT 218730f712c9SDave Chinner #undef RIGHT 218830f712c9SDave Chinner #undef PREV 218930f712c9SDave Chinner } 219030f712c9SDave Chinner 219130f712c9SDave Chinner /* 219230f712c9SDave Chinner * Convert an unwritten allocation to a real allocation or vice versa. 219330f712c9SDave Chinner */ 219430f712c9SDave Chinner STATIC int /* error */ 219530f712c9SDave Chinner xfs_bmap_add_extent_unwritten_real( 219630f712c9SDave Chinner struct xfs_trans *tp, 219730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 219830f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/insert */ 219930f712c9SDave Chinner xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ 220030f712c9SDave Chinner xfs_bmbt_irec_t *new, /* new data to add to file extents */ 220130f712c9SDave Chinner xfs_fsblock_t *first, /* pointer to firstblock variable */ 22022c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* list of extents to be freed */ 220330f712c9SDave Chinner int *logflagsp) /* inode logging flags */ 220430f712c9SDave Chinner { 220530f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 220630f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ 220730f712c9SDave Chinner int error; /* error return value */ 220830f712c9SDave Chinner int i; /* temp state */ 220930f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 221030f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 221130f712c9SDave Chinner xfs_exntst_t newext; /* new extent state */ 221230f712c9SDave Chinner xfs_exntst_t oldext; /* old extent state */ 221330f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 221430f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 221530f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 221630f712c9SDave Chinner int state = 0;/* state bits, accessed thru macros */ 2217c29aad41SEric Sandeen struct xfs_mount *mp = tp->t_mountp; 221830f712c9SDave Chinner 221930f712c9SDave Chinner *logflagsp = 0; 222030f712c9SDave Chinner 222130f712c9SDave Chinner cur = *curp; 222230f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); 222330f712c9SDave Chinner 222430f712c9SDave Chinner ASSERT(*idx >= 0); 22255d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 222630f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 222730f712c9SDave Chinner 2228ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 222930f712c9SDave Chinner 223030f712c9SDave Chinner #define LEFT r[0] 223130f712c9SDave Chinner #define RIGHT r[1] 223230f712c9SDave Chinner #define PREV r[2] 223330f712c9SDave Chinner 223430f712c9SDave Chinner /* 223530f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 223630f712c9SDave Chinner */ 223730f712c9SDave Chinner error = 0; 223830f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, *idx); 223930f712c9SDave Chinner xfs_bmbt_get_all(ep, &PREV); 224030f712c9SDave Chinner newext = new->br_state; 224130f712c9SDave Chinner oldext = (newext == XFS_EXT_UNWRITTEN) ? 224230f712c9SDave Chinner XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 224330f712c9SDave Chinner ASSERT(PREV.br_state == oldext); 224430f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 224530f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 224630f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 224730f712c9SDave Chinner 224830f712c9SDave Chinner /* 224930f712c9SDave Chinner * Set flags determining what part of the previous oldext allocation 225030f712c9SDave Chinner * extent is being replaced by a newext allocation. 225130f712c9SDave Chinner */ 225230f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 225330f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 225430f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 225530f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 225630f712c9SDave Chinner 225730f712c9SDave Chinner /* 225830f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 225930f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 226030f712c9SDave Chinner */ 226130f712c9SDave Chinner if (*idx > 0) { 226230f712c9SDave Chinner state |= BMAP_LEFT_VALID; 226330f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &LEFT); 226430f712c9SDave Chinner 226530f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 226630f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 226730f712c9SDave Chinner } 226830f712c9SDave Chinner 226930f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 227030f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 227130f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 227230f712c9SDave Chinner LEFT.br_state == newext && 227330f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 227430f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 227530f712c9SDave Chinner 227630f712c9SDave Chinner /* 227730f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 227830f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 227930f712c9SDave Chinner * Also check for all-three-contiguous being too large. 228030f712c9SDave Chinner */ 22815d829300SEric Sandeen if (*idx < xfs_iext_count(&ip->i_df) - 1) { 228230f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 228330f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx + 1), &RIGHT); 228430f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 228530f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 228630f712c9SDave Chinner } 228730f712c9SDave Chinner 228830f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 228930f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 229030f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 229130f712c9SDave Chinner newext == RIGHT.br_state && 229230f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 229330f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 229430f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 229530f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 229630f712c9SDave Chinner BMAP_RIGHT_FILLING) || 229730f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 229830f712c9SDave Chinner <= MAXEXTLEN)) 229930f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 230030f712c9SDave Chinner 230130f712c9SDave Chinner /* 230230f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 230330f712c9SDave Chinner */ 230430f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 230530f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 230630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 230730f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 230830f712c9SDave Chinner /* 230930f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 231030f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 231130f712c9SDave Chinner */ 231230f712c9SDave Chinner --*idx; 231330f712c9SDave Chinner 231430f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 231530f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 231630f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 231730f712c9SDave Chinner RIGHT.br_blockcount); 231830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 231930f712c9SDave Chinner 232030f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 2, state); 232130f712c9SDave Chinner ip->i_d.di_nextents -= 2; 232230f712c9SDave Chinner if (cur == NULL) 232330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 232430f712c9SDave Chinner else { 232530f712c9SDave Chinner rval = XFS_ILOG_CORE; 232630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, 232730f712c9SDave Chinner RIGHT.br_startblock, 232830f712c9SDave Chinner RIGHT.br_blockcount, &i))) 232930f712c9SDave Chinner goto done; 2330c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 233130f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 233230f712c9SDave Chinner goto done; 2333c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 233430f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 233530f712c9SDave Chinner goto done; 2336c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 233730f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 233830f712c9SDave Chinner goto done; 2339c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 234030f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 234130f712c9SDave Chinner goto done; 2342c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 234330f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, 234430f712c9SDave Chinner LEFT.br_startblock, 234530f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 234630f712c9SDave Chinner RIGHT.br_blockcount, LEFT.br_state))) 234730f712c9SDave Chinner goto done; 234830f712c9SDave Chinner } 234930f712c9SDave Chinner break; 235030f712c9SDave Chinner 235130f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 235230f712c9SDave Chinner /* 235330f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 235430f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 235530f712c9SDave Chinner */ 235630f712c9SDave Chinner --*idx; 235730f712c9SDave Chinner 235830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 235930f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 236030f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount); 236130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 236230f712c9SDave Chinner 236330f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 236430f712c9SDave Chinner ip->i_d.di_nextents--; 236530f712c9SDave Chinner if (cur == NULL) 236630f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 236730f712c9SDave Chinner else { 236830f712c9SDave Chinner rval = XFS_ILOG_CORE; 236930f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 237030f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 237130f712c9SDave Chinner &i))) 237230f712c9SDave Chinner goto done; 2373c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 237430f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 237530f712c9SDave Chinner goto done; 2376c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 237730f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 237830f712c9SDave Chinner goto done; 2379c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 238030f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, 238130f712c9SDave Chinner LEFT.br_startblock, 238230f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount, 238330f712c9SDave Chinner LEFT.br_state))) 238430f712c9SDave Chinner goto done; 238530f712c9SDave Chinner } 238630f712c9SDave Chinner break; 238730f712c9SDave Chinner 238830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 238930f712c9SDave Chinner /* 239030f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 239130f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 239230f712c9SDave Chinner */ 239330f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 239430f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 239530f712c9SDave Chinner PREV.br_blockcount + RIGHT.br_blockcount); 239630f712c9SDave Chinner xfs_bmbt_set_state(ep, newext); 239730f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 239830f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 239930f712c9SDave Chinner ip->i_d.di_nextents--; 240030f712c9SDave Chinner if (cur == NULL) 240130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 240230f712c9SDave Chinner else { 240330f712c9SDave Chinner rval = XFS_ILOG_CORE; 240430f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, 240530f712c9SDave Chinner RIGHT.br_startblock, 240630f712c9SDave Chinner RIGHT.br_blockcount, &i))) 240730f712c9SDave Chinner goto done; 2408c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 240930f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 241030f712c9SDave Chinner goto done; 2411c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 241230f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 241330f712c9SDave Chinner goto done; 2414c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 241530f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 241630f712c9SDave Chinner new->br_startblock, 241730f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 241830f712c9SDave Chinner newext))) 241930f712c9SDave Chinner goto done; 242030f712c9SDave Chinner } 242130f712c9SDave Chinner break; 242230f712c9SDave Chinner 242330f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 242430f712c9SDave Chinner /* 242530f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 242630f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 242730f712c9SDave Chinner * the new one. 242830f712c9SDave Chinner */ 242930f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 243030f712c9SDave Chinner xfs_bmbt_set_state(ep, newext); 243130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 243230f712c9SDave Chinner 243330f712c9SDave Chinner if (cur == NULL) 243430f712c9SDave Chinner rval = XFS_ILOG_DEXT; 243530f712c9SDave Chinner else { 243630f712c9SDave Chinner rval = 0; 243730f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 243830f712c9SDave Chinner new->br_startblock, new->br_blockcount, 243930f712c9SDave Chinner &i))) 244030f712c9SDave Chinner goto done; 2441c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 244230f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 244330f712c9SDave Chinner new->br_startblock, new->br_blockcount, 244430f712c9SDave Chinner newext))) 244530f712c9SDave Chinner goto done; 244630f712c9SDave Chinner } 244730f712c9SDave Chinner break; 244830f712c9SDave Chinner 244930f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 245030f712c9SDave Chinner /* 245130f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 245230f712c9SDave Chinner * The left neighbor is contiguous. 245330f712c9SDave Chinner */ 245430f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx - 1, state, _THIS_IP_); 245530f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx - 1), 245630f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount); 245730f712c9SDave Chinner xfs_bmbt_set_startoff(ep, 245830f712c9SDave Chinner PREV.br_startoff + new->br_blockcount); 245930f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx - 1, state, _THIS_IP_); 246030f712c9SDave Chinner 246130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 246230f712c9SDave Chinner xfs_bmbt_set_startblock(ep, 246330f712c9SDave Chinner new->br_startblock + new->br_blockcount); 246430f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 246530f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 246630f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 246730f712c9SDave Chinner 246830f712c9SDave Chinner --*idx; 246930f712c9SDave Chinner 247030f712c9SDave Chinner if (cur == NULL) 247130f712c9SDave Chinner rval = XFS_ILOG_DEXT; 247230f712c9SDave Chinner else { 247330f712c9SDave Chinner rval = 0; 247430f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 247530f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 247630f712c9SDave Chinner &i))) 247730f712c9SDave Chinner goto done; 2478c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 247930f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 248030f712c9SDave Chinner PREV.br_startoff + new->br_blockcount, 248130f712c9SDave Chinner PREV.br_startblock + new->br_blockcount, 248230f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 248330f712c9SDave Chinner oldext))) 248430f712c9SDave Chinner goto done; 248530f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 248630f712c9SDave Chinner goto done; 248730f712c9SDave Chinner error = xfs_bmbt_update(cur, LEFT.br_startoff, 248830f712c9SDave Chinner LEFT.br_startblock, 248930f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount, 249030f712c9SDave Chinner LEFT.br_state); 249130f712c9SDave Chinner if (error) 249230f712c9SDave Chinner goto done; 249330f712c9SDave Chinner } 249430f712c9SDave Chinner break; 249530f712c9SDave Chinner 249630f712c9SDave Chinner case BMAP_LEFT_FILLING: 249730f712c9SDave Chinner /* 249830f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 249930f712c9SDave Chinner * The left neighbor is not contiguous. 250030f712c9SDave Chinner */ 250130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 250230f712c9SDave Chinner ASSERT(ep && xfs_bmbt_get_state(ep) == oldext); 250330f712c9SDave Chinner xfs_bmbt_set_startoff(ep, new_endoff); 250430f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 250530f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 250630f712c9SDave Chinner xfs_bmbt_set_startblock(ep, 250730f712c9SDave Chinner new->br_startblock + new->br_blockcount); 250830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 250930f712c9SDave Chinner 251030f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 251130f712c9SDave Chinner ip->i_d.di_nextents++; 251230f712c9SDave Chinner if (cur == NULL) 251330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 251430f712c9SDave Chinner else { 251530f712c9SDave Chinner rval = XFS_ILOG_CORE; 251630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 251730f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 251830f712c9SDave Chinner &i))) 251930f712c9SDave Chinner goto done; 2520c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 252130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 252230f712c9SDave Chinner PREV.br_startoff + new->br_blockcount, 252330f712c9SDave Chinner PREV.br_startblock + new->br_blockcount, 252430f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 252530f712c9SDave Chinner oldext))) 252630f712c9SDave Chinner goto done; 252730f712c9SDave Chinner cur->bc_rec.b = *new; 252830f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 252930f712c9SDave Chinner goto done; 2530c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 253130f712c9SDave Chinner } 253230f712c9SDave Chinner break; 253330f712c9SDave Chinner 253430f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 253530f712c9SDave Chinner /* 253630f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 253730f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 253830f712c9SDave Chinner */ 253930f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 254030f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 254130f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 254230f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 254330f712c9SDave Chinner 254430f712c9SDave Chinner ++*idx; 254530f712c9SDave Chinner 254630f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 254730f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 254830f712c9SDave Chinner new->br_startoff, new->br_startblock, 254930f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, newext); 255030f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 255130f712c9SDave Chinner 255230f712c9SDave Chinner if (cur == NULL) 255330f712c9SDave Chinner rval = XFS_ILOG_DEXT; 255430f712c9SDave Chinner else { 255530f712c9SDave Chinner rval = 0; 255630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 255730f712c9SDave Chinner PREV.br_startblock, 255830f712c9SDave Chinner PREV.br_blockcount, &i))) 255930f712c9SDave Chinner goto done; 2560c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 256130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, PREV.br_startoff, 256230f712c9SDave Chinner PREV.br_startblock, 256330f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 256430f712c9SDave Chinner oldext))) 256530f712c9SDave Chinner goto done; 256630f712c9SDave Chinner if ((error = xfs_btree_increment(cur, 0, &i))) 256730f712c9SDave Chinner goto done; 256830f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 256930f712c9SDave Chinner new->br_startblock, 257030f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 257130f712c9SDave Chinner newext))) 257230f712c9SDave Chinner goto done; 257330f712c9SDave Chinner } 257430f712c9SDave Chinner break; 257530f712c9SDave Chinner 257630f712c9SDave Chinner case BMAP_RIGHT_FILLING: 257730f712c9SDave Chinner /* 257830f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 257930f712c9SDave Chinner * The right neighbor is not contiguous. 258030f712c9SDave Chinner */ 258130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 258230f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 258330f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 258430f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 258530f712c9SDave Chinner 258630f712c9SDave Chinner ++*idx; 258730f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 258830f712c9SDave Chinner 258930f712c9SDave Chinner ip->i_d.di_nextents++; 259030f712c9SDave Chinner if (cur == NULL) 259130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 259230f712c9SDave Chinner else { 259330f712c9SDave Chinner rval = XFS_ILOG_CORE; 259430f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 259530f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 259630f712c9SDave Chinner &i))) 259730f712c9SDave Chinner goto done; 2598c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 259930f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, PREV.br_startoff, 260030f712c9SDave Chinner PREV.br_startblock, 260130f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 260230f712c9SDave Chinner oldext))) 260330f712c9SDave Chinner goto done; 260430f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 260530f712c9SDave Chinner new->br_startblock, new->br_blockcount, 260630f712c9SDave Chinner &i))) 260730f712c9SDave Chinner goto done; 2608c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 260930f712c9SDave Chinner cur->bc_rec.b.br_state = XFS_EXT_NORM; 261030f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 261130f712c9SDave Chinner goto done; 2612c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 261330f712c9SDave Chinner } 261430f712c9SDave Chinner break; 261530f712c9SDave Chinner 261630f712c9SDave Chinner case 0: 261730f712c9SDave Chinner /* 261830f712c9SDave Chinner * Setting the middle part of a previous oldext extent to 261930f712c9SDave Chinner * newext. Contiguity is impossible here. 262030f712c9SDave Chinner * One extent becomes three extents. 262130f712c9SDave Chinner */ 262230f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 262330f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 262430f712c9SDave Chinner new->br_startoff - PREV.br_startoff); 262530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 262630f712c9SDave Chinner 262730f712c9SDave Chinner r[0] = *new; 262830f712c9SDave Chinner r[1].br_startoff = new_endoff; 262930f712c9SDave Chinner r[1].br_blockcount = 263030f712c9SDave Chinner PREV.br_startoff + PREV.br_blockcount - new_endoff; 263130f712c9SDave Chinner r[1].br_startblock = new->br_startblock + new->br_blockcount; 263230f712c9SDave Chinner r[1].br_state = oldext; 263330f712c9SDave Chinner 263430f712c9SDave Chinner ++*idx; 263530f712c9SDave Chinner xfs_iext_insert(ip, *idx, 2, &r[0], state); 263630f712c9SDave Chinner 263730f712c9SDave Chinner ip->i_d.di_nextents += 2; 263830f712c9SDave Chinner if (cur == NULL) 263930f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 264030f712c9SDave Chinner else { 264130f712c9SDave Chinner rval = XFS_ILOG_CORE; 264230f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 264330f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 264430f712c9SDave Chinner &i))) 264530f712c9SDave Chinner goto done; 2646c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 264730f712c9SDave Chinner /* new right extent - oldext */ 264830f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, r[1].br_startoff, 264930f712c9SDave Chinner r[1].br_startblock, r[1].br_blockcount, 265030f712c9SDave Chinner r[1].br_state))) 265130f712c9SDave Chinner goto done; 265230f712c9SDave Chinner /* new left extent - oldext */ 265330f712c9SDave Chinner cur->bc_rec.b = PREV; 265430f712c9SDave Chinner cur->bc_rec.b.br_blockcount = 265530f712c9SDave Chinner new->br_startoff - PREV.br_startoff; 265630f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 265730f712c9SDave Chinner goto done; 2658c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 265930f712c9SDave Chinner /* 266030f712c9SDave Chinner * Reset the cursor to the position of the new extent 266130f712c9SDave Chinner * we are about to insert as we can't trust it after 266230f712c9SDave Chinner * the previous insert. 266330f712c9SDave Chinner */ 266430f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 266530f712c9SDave Chinner new->br_startblock, new->br_blockcount, 266630f712c9SDave Chinner &i))) 266730f712c9SDave Chinner goto done; 2668c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 266930f712c9SDave Chinner /* new middle extent - newext */ 267030f712c9SDave Chinner cur->bc_rec.b.br_state = new->br_state; 267130f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 267230f712c9SDave Chinner goto done; 2673c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 267430f712c9SDave Chinner } 267530f712c9SDave Chinner break; 267630f712c9SDave Chinner 267730f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 267830f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 267930f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 268030f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 268130f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 268230f712c9SDave Chinner case BMAP_LEFT_CONTIG: 268330f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 268430f712c9SDave Chinner /* 268530f712c9SDave Chinner * These cases are all impossible. 268630f712c9SDave Chinner */ 268730f712c9SDave Chinner ASSERT(0); 268830f712c9SDave Chinner } 268930f712c9SDave Chinner 26909c194644SDarrick J. Wong /* update reverse mappings */ 26919c194644SDarrick J. Wong error = xfs_rmap_convert_extent(mp, dfops, ip, XFS_DATA_FORK, new); 26929c194644SDarrick J. Wong if (error) 26939c194644SDarrick J. Wong goto done; 26949c194644SDarrick J. Wong 269530f712c9SDave Chinner /* convert to a btree if necessary */ 269630f712c9SDave Chinner if (xfs_bmap_needs_btree(ip, XFS_DATA_FORK)) { 269730f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 269830f712c9SDave Chinner 269930f712c9SDave Chinner ASSERT(cur == NULL); 27002c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, first, dfops, &cur, 270130f712c9SDave Chinner 0, &tmp_logflags, XFS_DATA_FORK); 270230f712c9SDave Chinner *logflagsp |= tmp_logflags; 270330f712c9SDave Chinner if (error) 270430f712c9SDave Chinner goto done; 270530f712c9SDave Chinner } 270630f712c9SDave Chinner 270730f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 270830f712c9SDave Chinner if (cur) { 270930f712c9SDave Chinner cur->bc_private.b.allocated = 0; 271030f712c9SDave Chinner *curp = cur; 271130f712c9SDave Chinner } 271230f712c9SDave Chinner 271330f712c9SDave Chinner xfs_bmap_check_leaf_extents(*curp, ip, XFS_DATA_FORK); 271430f712c9SDave Chinner done: 271530f712c9SDave Chinner *logflagsp |= rval; 271630f712c9SDave Chinner return error; 271730f712c9SDave Chinner #undef LEFT 271830f712c9SDave Chinner #undef RIGHT 271930f712c9SDave Chinner #undef PREV 272030f712c9SDave Chinner } 272130f712c9SDave Chinner 272230f712c9SDave Chinner /* 272330f712c9SDave Chinner * Convert a hole to a delayed allocation. 272430f712c9SDave Chinner */ 272530f712c9SDave Chinner STATIC void 272630f712c9SDave Chinner xfs_bmap_add_extent_hole_delay( 272730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 2728be51f811SDarrick J. Wong int whichfork, 272930f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/insert */ 273030f712c9SDave Chinner xfs_bmbt_irec_t *new) /* new data to add to file extents */ 273130f712c9SDave Chinner { 273230f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 273330f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 273430f712c9SDave Chinner xfs_filblks_t newlen=0; /* new indirect size */ 273530f712c9SDave Chinner xfs_filblks_t oldlen=0; /* old indirect size */ 273630f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 273730f712c9SDave Chinner int state; /* state bits, accessed thru macros */ 273830f712c9SDave Chinner xfs_filblks_t temp=0; /* temp for indirect calculations */ 273930f712c9SDave Chinner 2740be51f811SDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 274130f712c9SDave Chinner state = 0; 2742be51f811SDarrick J. Wong if (whichfork == XFS_COW_FORK) 2743be51f811SDarrick J. Wong state |= BMAP_COWFORK; 274430f712c9SDave Chinner ASSERT(isnullstartblock(new->br_startblock)); 274530f712c9SDave Chinner 274630f712c9SDave Chinner /* 274730f712c9SDave Chinner * Check and set flags if this segment has a left neighbor 274830f712c9SDave Chinner */ 274930f712c9SDave Chinner if (*idx > 0) { 275030f712c9SDave Chinner state |= BMAP_LEFT_VALID; 275130f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &left); 275230f712c9SDave Chinner 275330f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 275430f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 275530f712c9SDave Chinner } 275630f712c9SDave Chinner 275730f712c9SDave Chinner /* 275830f712c9SDave Chinner * Check and set flags if the current (right) segment exists. 275930f712c9SDave Chinner * If it doesn't exist, we're converting the hole at end-of-file. 276030f712c9SDave Chinner */ 27615d829300SEric Sandeen if (*idx < xfs_iext_count(ifp)) { 276230f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 276330f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx), &right); 276430f712c9SDave Chinner 276530f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 276630f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 276730f712c9SDave Chinner } 276830f712c9SDave Chinner 276930f712c9SDave Chinner /* 277030f712c9SDave Chinner * Set contiguity flags on the left and right neighbors. 277130f712c9SDave Chinner * Don't let extents get too large, even if the pieces are contiguous. 277230f712c9SDave Chinner */ 277330f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) && 277430f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 277530f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 277630f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 277730f712c9SDave Chinner 277830f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) && 277930f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 278030f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 278130f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 278230f712c9SDave Chinner (left.br_blockcount + new->br_blockcount + 278330f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN))) 278430f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 278530f712c9SDave Chinner 278630f712c9SDave Chinner /* 278730f712c9SDave Chinner * Switch out based on the contiguity flags. 278830f712c9SDave Chinner */ 278930f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 279030f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 279130f712c9SDave Chinner /* 279230f712c9SDave Chinner * New allocation is contiguous with delayed allocations 279330f712c9SDave Chinner * on the left and on the right. 279430f712c9SDave Chinner * Merge all three into a single extent record. 279530f712c9SDave Chinner */ 279630f712c9SDave Chinner --*idx; 279730f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount + 279830f712c9SDave Chinner right.br_blockcount; 279930f712c9SDave Chinner 280030f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 280130f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp); 280230f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 280330f712c9SDave Chinner startblockval(new->br_startblock) + 280430f712c9SDave Chinner startblockval(right.br_startblock); 280530f712c9SDave Chinner newlen = xfs_bmap_worst_indlen(ip, temp); 280630f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx), 280730f712c9SDave Chinner nullstartblock((int)newlen)); 280830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 280930f712c9SDave Chinner 281030f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 281130f712c9SDave Chinner break; 281230f712c9SDave Chinner 281330f712c9SDave Chinner case BMAP_LEFT_CONTIG: 281430f712c9SDave Chinner /* 281530f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 281630f712c9SDave Chinner * on the left. 281730f712c9SDave Chinner * Merge the new allocation with the left neighbor. 281830f712c9SDave Chinner */ 281930f712c9SDave Chinner --*idx; 282030f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount; 282130f712c9SDave Chinner 282230f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 282330f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp); 282430f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 282530f712c9SDave Chinner startblockval(new->br_startblock); 282630f712c9SDave Chinner newlen = xfs_bmap_worst_indlen(ip, temp); 282730f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx), 282830f712c9SDave Chinner nullstartblock((int)newlen)); 282930f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 283030f712c9SDave Chinner break; 283130f712c9SDave Chinner 283230f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 283330f712c9SDave Chinner /* 283430f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 283530f712c9SDave Chinner * on the right. 283630f712c9SDave Chinner * Merge the new allocation with the right neighbor. 283730f712c9SDave Chinner */ 283830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 283930f712c9SDave Chinner temp = new->br_blockcount + right.br_blockcount; 284030f712c9SDave Chinner oldlen = startblockval(new->br_startblock) + 284130f712c9SDave Chinner startblockval(right.br_startblock); 284230f712c9SDave Chinner newlen = xfs_bmap_worst_indlen(ip, temp); 284330f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 284430f712c9SDave Chinner new->br_startoff, 284530f712c9SDave Chinner nullstartblock((int)newlen), temp, right.br_state); 284630f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 284730f712c9SDave Chinner break; 284830f712c9SDave Chinner 284930f712c9SDave Chinner case 0: 285030f712c9SDave Chinner /* 285130f712c9SDave Chinner * New allocation is not contiguous with another 285230f712c9SDave Chinner * delayed allocation. 285330f712c9SDave Chinner * Insert a new entry. 285430f712c9SDave Chinner */ 285530f712c9SDave Chinner oldlen = newlen = 0; 285630f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 285730f712c9SDave Chinner break; 285830f712c9SDave Chinner } 285930f712c9SDave Chinner if (oldlen != newlen) { 286030f712c9SDave Chinner ASSERT(oldlen > newlen); 28610d485adaSDave Chinner xfs_mod_fdblocks(ip->i_mount, (int64_t)(oldlen - newlen), 28620d485adaSDave Chinner false); 286330f712c9SDave Chinner /* 286430f712c9SDave Chinner * Nothing to do for disk quota accounting here. 286530f712c9SDave Chinner */ 286630f712c9SDave Chinner } 286730f712c9SDave Chinner } 286830f712c9SDave Chinner 286930f712c9SDave Chinner /* 287030f712c9SDave Chinner * Convert a hole to a real allocation. 287130f712c9SDave Chinner */ 287230f712c9SDave Chinner STATIC int /* error */ 287330f712c9SDave Chinner xfs_bmap_add_extent_hole_real( 287430f712c9SDave Chinner struct xfs_bmalloca *bma, 287530f712c9SDave Chinner int whichfork) 287630f712c9SDave Chinner { 287730f712c9SDave Chinner struct xfs_bmbt_irec *new = &bma->got; 287830f712c9SDave Chinner int error; /* error return value */ 287930f712c9SDave Chinner int i; /* temp state */ 288030f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 288130f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 288230f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 288330f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 288430f712c9SDave Chinner int state; /* state bits, accessed thru macros */ 2885c29aad41SEric Sandeen struct xfs_mount *mp; 288630f712c9SDave Chinner 2887f1f96c49SEric Sandeen mp = bma->ip->i_mount; 288830f712c9SDave Chinner ifp = XFS_IFORK_PTR(bma->ip, whichfork); 288930f712c9SDave Chinner 289030f712c9SDave Chinner ASSERT(bma->idx >= 0); 28915d829300SEric Sandeen ASSERT(bma->idx <= xfs_iext_count(ifp)); 289230f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 289330f712c9SDave Chinner ASSERT(!bma->cur || 289430f712c9SDave Chinner !(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 28953993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 289630f712c9SDave Chinner 2897ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 289830f712c9SDave Chinner 289930f712c9SDave Chinner state = 0; 290030f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 290130f712c9SDave Chinner state |= BMAP_ATTRFORK; 290230f712c9SDave Chinner 290330f712c9SDave Chinner /* 290430f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 290530f712c9SDave Chinner */ 290630f712c9SDave Chinner if (bma->idx > 0) { 290730f712c9SDave Chinner state |= BMAP_LEFT_VALID; 290830f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &left); 290930f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 291030f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 291130f712c9SDave Chinner } 291230f712c9SDave Chinner 291330f712c9SDave Chinner /* 291430f712c9SDave Chinner * Check and set flags if this segment has a current value. 291530f712c9SDave Chinner * Not true if we're inserting into the "hole" at eof. 291630f712c9SDave Chinner */ 29175d829300SEric Sandeen if (bma->idx < xfs_iext_count(ifp)) { 291830f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 291930f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &right); 292030f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 292130f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 292230f712c9SDave Chinner } 292330f712c9SDave Chinner 292430f712c9SDave Chinner /* 292530f712c9SDave Chinner * We're inserting a real allocation between "left" and "right". 292630f712c9SDave Chinner * Set the contiguity flags. Don't let extents get too large. 292730f712c9SDave Chinner */ 292830f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 292930f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 293030f712c9SDave Chinner left.br_startblock + left.br_blockcount == new->br_startblock && 293130f712c9SDave Chinner left.br_state == new->br_state && 293230f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 293330f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 293430f712c9SDave Chinner 293530f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 293630f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 293730f712c9SDave Chinner new->br_startblock + new->br_blockcount == right.br_startblock && 293830f712c9SDave Chinner new->br_state == right.br_state && 293930f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 294030f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 294130f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 294230f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN)) 294330f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 294430f712c9SDave Chinner 294530f712c9SDave Chinner error = 0; 294630f712c9SDave Chinner /* 294730f712c9SDave Chinner * Select which case we're in here, and implement it. 294830f712c9SDave Chinner */ 294930f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 295030f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 295130f712c9SDave Chinner /* 295230f712c9SDave Chinner * New allocation is contiguous with real allocations on the 295330f712c9SDave Chinner * left and on the right. 295430f712c9SDave Chinner * Merge all three into a single extent record. 295530f712c9SDave Chinner */ 295630f712c9SDave Chinner --bma->idx; 295730f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 295830f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 295930f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 296030f712c9SDave Chinner right.br_blockcount); 296130f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 296230f712c9SDave Chinner 296330f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 296430f712c9SDave Chinner 296530f712c9SDave Chinner XFS_IFORK_NEXT_SET(bma->ip, whichfork, 296630f712c9SDave Chinner XFS_IFORK_NEXTENTS(bma->ip, whichfork) - 1); 296730f712c9SDave Chinner if (bma->cur == NULL) { 296830f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 296930f712c9SDave Chinner } else { 297030f712c9SDave Chinner rval = XFS_ILOG_CORE; 297130f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, right.br_startoff, 297230f712c9SDave Chinner right.br_startblock, right.br_blockcount, 297330f712c9SDave Chinner &i); 297430f712c9SDave Chinner if (error) 297530f712c9SDave Chinner goto done; 2976c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 297730f712c9SDave Chinner error = xfs_btree_delete(bma->cur, &i); 297830f712c9SDave Chinner if (error) 297930f712c9SDave Chinner goto done; 2980c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 298130f712c9SDave Chinner error = xfs_btree_decrement(bma->cur, 0, &i); 298230f712c9SDave Chinner if (error) 298330f712c9SDave Chinner goto done; 2984c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 298530f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, left.br_startoff, 298630f712c9SDave Chinner left.br_startblock, 298730f712c9SDave Chinner left.br_blockcount + 298830f712c9SDave Chinner new->br_blockcount + 298930f712c9SDave Chinner right.br_blockcount, 299030f712c9SDave Chinner left.br_state); 299130f712c9SDave Chinner if (error) 299230f712c9SDave Chinner goto done; 299330f712c9SDave Chinner } 299430f712c9SDave Chinner break; 299530f712c9SDave Chinner 299630f712c9SDave Chinner case BMAP_LEFT_CONTIG: 299730f712c9SDave Chinner /* 299830f712c9SDave Chinner * New allocation is contiguous with a real allocation 299930f712c9SDave Chinner * on the left. 300030f712c9SDave Chinner * Merge the new allocation with the left neighbor. 300130f712c9SDave Chinner */ 300230f712c9SDave Chinner --bma->idx; 300330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 300430f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 300530f712c9SDave Chinner left.br_blockcount + new->br_blockcount); 300630f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 300730f712c9SDave Chinner 300830f712c9SDave Chinner if (bma->cur == NULL) { 300930f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 301030f712c9SDave Chinner } else { 301130f712c9SDave Chinner rval = 0; 301230f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, left.br_startoff, 301330f712c9SDave Chinner left.br_startblock, left.br_blockcount, 301430f712c9SDave Chinner &i); 301530f712c9SDave Chinner if (error) 301630f712c9SDave Chinner goto done; 3017c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 301830f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, left.br_startoff, 301930f712c9SDave Chinner left.br_startblock, 302030f712c9SDave Chinner left.br_blockcount + 302130f712c9SDave Chinner new->br_blockcount, 302230f712c9SDave Chinner left.br_state); 302330f712c9SDave Chinner if (error) 302430f712c9SDave Chinner goto done; 302530f712c9SDave Chinner } 302630f712c9SDave Chinner break; 302730f712c9SDave Chinner 302830f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 302930f712c9SDave Chinner /* 303030f712c9SDave Chinner * New allocation is contiguous with a real allocation 303130f712c9SDave Chinner * on the right. 303230f712c9SDave Chinner * Merge the new allocation with the right neighbor. 303330f712c9SDave Chinner */ 303430f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 303530f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx), 303630f712c9SDave Chinner new->br_startoff, new->br_startblock, 303730f712c9SDave Chinner new->br_blockcount + right.br_blockcount, 303830f712c9SDave Chinner right.br_state); 303930f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 304030f712c9SDave Chinner 304130f712c9SDave Chinner if (bma->cur == NULL) { 304230f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 304330f712c9SDave Chinner } else { 304430f712c9SDave Chinner rval = 0; 304530f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, 304630f712c9SDave Chinner right.br_startoff, 304730f712c9SDave Chinner right.br_startblock, 304830f712c9SDave Chinner right.br_blockcount, &i); 304930f712c9SDave Chinner if (error) 305030f712c9SDave Chinner goto done; 3051c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 305230f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, new->br_startoff, 305330f712c9SDave Chinner new->br_startblock, 305430f712c9SDave Chinner new->br_blockcount + 305530f712c9SDave Chinner right.br_blockcount, 305630f712c9SDave Chinner right.br_state); 305730f712c9SDave Chinner if (error) 305830f712c9SDave Chinner goto done; 305930f712c9SDave Chinner } 306030f712c9SDave Chinner break; 306130f712c9SDave Chinner 306230f712c9SDave Chinner case 0: 306330f712c9SDave Chinner /* 306430f712c9SDave Chinner * New allocation is not contiguous with another 306530f712c9SDave Chinner * real allocation. 306630f712c9SDave Chinner * Insert a new entry. 306730f712c9SDave Chinner */ 306830f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx, 1, new, state); 306930f712c9SDave Chinner XFS_IFORK_NEXT_SET(bma->ip, whichfork, 307030f712c9SDave Chinner XFS_IFORK_NEXTENTS(bma->ip, whichfork) + 1); 307130f712c9SDave Chinner if (bma->cur == NULL) { 307230f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 307330f712c9SDave Chinner } else { 307430f712c9SDave Chinner rval = XFS_ILOG_CORE; 307530f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, 307630f712c9SDave Chinner new->br_startoff, 307730f712c9SDave Chinner new->br_startblock, 307830f712c9SDave Chinner new->br_blockcount, &i); 307930f712c9SDave Chinner if (error) 308030f712c9SDave Chinner goto done; 3081c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 308230f712c9SDave Chinner bma->cur->bc_rec.b.br_state = new->br_state; 308330f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 308430f712c9SDave Chinner if (error) 308530f712c9SDave Chinner goto done; 3086c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 308730f712c9SDave Chinner } 308830f712c9SDave Chinner break; 308930f712c9SDave Chinner } 309030f712c9SDave Chinner 30919c194644SDarrick J. Wong /* add reverse mapping */ 30929c194644SDarrick J. Wong error = xfs_rmap_map_extent(mp, bma->dfops, bma->ip, whichfork, new); 30939c194644SDarrick J. Wong if (error) 30949c194644SDarrick J. Wong goto done; 30959c194644SDarrick J. Wong 309630f712c9SDave Chinner /* convert to a btree if necessary */ 309730f712c9SDave Chinner if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 309830f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 309930f712c9SDave Chinner 310030f712c9SDave Chinner ASSERT(bma->cur == NULL); 310130f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 31022c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 310330f712c9SDave Chinner 0, &tmp_logflags, whichfork); 310430f712c9SDave Chinner bma->logflags |= tmp_logflags; 310530f712c9SDave Chinner if (error) 310630f712c9SDave Chinner goto done; 310730f712c9SDave Chinner } 310830f712c9SDave Chinner 310930f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 311030f712c9SDave Chinner if (bma->cur) 311130f712c9SDave Chinner bma->cur->bc_private.b.allocated = 0; 311230f712c9SDave Chinner 311330f712c9SDave Chinner xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); 311430f712c9SDave Chinner done: 311530f712c9SDave Chinner bma->logflags |= rval; 311630f712c9SDave Chinner return error; 311730f712c9SDave Chinner } 311830f712c9SDave Chinner 311930f712c9SDave Chinner /* 312030f712c9SDave Chinner * Functions used in the extent read, allocate and remove paths 312130f712c9SDave Chinner */ 312230f712c9SDave Chinner 312330f712c9SDave Chinner /* 312430f712c9SDave Chinner * Adjust the size of the new extent based on di_extsize and rt extsize. 312530f712c9SDave Chinner */ 312630f712c9SDave Chinner int 312730f712c9SDave Chinner xfs_bmap_extsize_align( 312830f712c9SDave Chinner xfs_mount_t *mp, 312930f712c9SDave Chinner xfs_bmbt_irec_t *gotp, /* next extent pointer */ 313030f712c9SDave Chinner xfs_bmbt_irec_t *prevp, /* previous extent pointer */ 313130f712c9SDave Chinner xfs_extlen_t extsz, /* align to this extent size */ 313230f712c9SDave Chinner int rt, /* is this a realtime inode? */ 313330f712c9SDave Chinner int eof, /* is extent at end-of-file? */ 313430f712c9SDave Chinner int delay, /* creating delalloc extent? */ 313530f712c9SDave Chinner int convert, /* overwriting unwritten extent? */ 313630f712c9SDave Chinner xfs_fileoff_t *offp, /* in/out: aligned offset */ 313730f712c9SDave Chinner xfs_extlen_t *lenp) /* in/out: aligned length */ 313830f712c9SDave Chinner { 313930f712c9SDave Chinner xfs_fileoff_t orig_off; /* original offset */ 314030f712c9SDave Chinner xfs_extlen_t orig_alen; /* original length */ 314130f712c9SDave Chinner xfs_fileoff_t orig_end; /* original off+len */ 314230f712c9SDave Chinner xfs_fileoff_t nexto; /* next file offset */ 314330f712c9SDave Chinner xfs_fileoff_t prevo; /* previous file offset */ 314430f712c9SDave Chinner xfs_fileoff_t align_off; /* temp for offset */ 314530f712c9SDave Chinner xfs_extlen_t align_alen; /* temp for length */ 314630f712c9SDave Chinner xfs_extlen_t temp; /* temp for calculations */ 314730f712c9SDave Chinner 314830f712c9SDave Chinner if (convert) 314930f712c9SDave Chinner return 0; 315030f712c9SDave Chinner 315130f712c9SDave Chinner orig_off = align_off = *offp; 315230f712c9SDave Chinner orig_alen = align_alen = *lenp; 315330f712c9SDave Chinner orig_end = orig_off + orig_alen; 315430f712c9SDave Chinner 315530f712c9SDave Chinner /* 315630f712c9SDave Chinner * If this request overlaps an existing extent, then don't 315730f712c9SDave Chinner * attempt to perform any additional alignment. 315830f712c9SDave Chinner */ 315930f712c9SDave Chinner if (!delay && !eof && 316030f712c9SDave Chinner (orig_off >= gotp->br_startoff) && 316130f712c9SDave Chinner (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { 316230f712c9SDave Chinner return 0; 316330f712c9SDave Chinner } 316430f712c9SDave Chinner 316530f712c9SDave Chinner /* 316630f712c9SDave Chinner * If the file offset is unaligned vs. the extent size 316730f712c9SDave Chinner * we need to align it. This will be possible unless 316830f712c9SDave Chinner * the file was previously written with a kernel that didn't 316930f712c9SDave Chinner * perform this alignment, or if a truncate shot us in the 317030f712c9SDave Chinner * foot. 317130f712c9SDave Chinner */ 317230f712c9SDave Chinner temp = do_mod(orig_off, extsz); 317330f712c9SDave Chinner if (temp) { 317430f712c9SDave Chinner align_alen += temp; 317530f712c9SDave Chinner align_off -= temp; 317630f712c9SDave Chinner } 31776dea405eSDave Chinner 31786dea405eSDave Chinner /* Same adjustment for the end of the requested area. */ 31796dea405eSDave Chinner temp = (align_alen % extsz); 31806dea405eSDave Chinner if (temp) 318130f712c9SDave Chinner align_alen += extsz - temp; 31826dea405eSDave Chinner 31836dea405eSDave Chinner /* 31846dea405eSDave Chinner * For large extent hint sizes, the aligned extent might be larger than 31856dea405eSDave Chinner * MAXEXTLEN. In that case, reduce the size by an extsz so that it pulls 31866dea405eSDave Chinner * the length back under MAXEXTLEN. The outer allocation loops handle 31876dea405eSDave Chinner * short allocation just fine, so it is safe to do this. We only want to 31886dea405eSDave Chinner * do it when we are forced to, though, because it means more allocation 31896dea405eSDave Chinner * operations are required. 31906dea405eSDave Chinner */ 31916dea405eSDave Chinner while (align_alen > MAXEXTLEN) 31926dea405eSDave Chinner align_alen -= extsz; 31936dea405eSDave Chinner ASSERT(align_alen <= MAXEXTLEN); 31946dea405eSDave Chinner 319530f712c9SDave Chinner /* 319630f712c9SDave Chinner * If the previous block overlaps with this proposed allocation 319730f712c9SDave Chinner * then move the start forward without adjusting the length. 319830f712c9SDave Chinner */ 319930f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) { 320030f712c9SDave Chinner if (prevp->br_startblock == HOLESTARTBLOCK) 320130f712c9SDave Chinner prevo = prevp->br_startoff; 320230f712c9SDave Chinner else 320330f712c9SDave Chinner prevo = prevp->br_startoff + prevp->br_blockcount; 320430f712c9SDave Chinner } else 320530f712c9SDave Chinner prevo = 0; 320630f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 320730f712c9SDave Chinner align_off = prevo; 320830f712c9SDave Chinner /* 320930f712c9SDave Chinner * If the next block overlaps with this proposed allocation 321030f712c9SDave Chinner * then move the start back without adjusting the length, 321130f712c9SDave Chinner * but not before offset 0. 321230f712c9SDave Chinner * This may of course make the start overlap previous block, 321330f712c9SDave Chinner * and if we hit the offset 0 limit then the next block 321430f712c9SDave Chinner * can still overlap too. 321530f712c9SDave Chinner */ 321630f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) { 321730f712c9SDave Chinner if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || 321830f712c9SDave Chinner (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) 321930f712c9SDave Chinner nexto = gotp->br_startoff + gotp->br_blockcount; 322030f712c9SDave Chinner else 322130f712c9SDave Chinner nexto = gotp->br_startoff; 322230f712c9SDave Chinner } else 322330f712c9SDave Chinner nexto = NULLFILEOFF; 322430f712c9SDave Chinner if (!eof && 322530f712c9SDave Chinner align_off + align_alen != orig_end && 322630f712c9SDave Chinner align_off + align_alen > nexto) 322730f712c9SDave Chinner align_off = nexto > align_alen ? nexto - align_alen : 0; 322830f712c9SDave Chinner /* 322930f712c9SDave Chinner * If we're now overlapping the next or previous extent that 323030f712c9SDave Chinner * means we can't fit an extsz piece in this hole. Just move 323130f712c9SDave Chinner * the start forward to the first valid spot and set 323230f712c9SDave Chinner * the length so we hit the end. 323330f712c9SDave Chinner */ 323430f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 323530f712c9SDave Chinner align_off = prevo; 323630f712c9SDave Chinner if (align_off + align_alen != orig_end && 323730f712c9SDave Chinner align_off + align_alen > nexto && 323830f712c9SDave Chinner nexto != NULLFILEOFF) { 323930f712c9SDave Chinner ASSERT(nexto > prevo); 324030f712c9SDave Chinner align_alen = nexto - align_off; 324130f712c9SDave Chinner } 324230f712c9SDave Chinner 324330f712c9SDave Chinner /* 324430f712c9SDave Chinner * If realtime, and the result isn't a multiple of the realtime 324530f712c9SDave Chinner * extent size we need to remove blocks until it is. 324630f712c9SDave Chinner */ 324730f712c9SDave Chinner if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) { 324830f712c9SDave Chinner /* 324930f712c9SDave Chinner * We're not covering the original request, or 325030f712c9SDave Chinner * we won't be able to once we fix the length. 325130f712c9SDave Chinner */ 325230f712c9SDave Chinner if (orig_off < align_off || 325330f712c9SDave Chinner orig_end > align_off + align_alen || 325430f712c9SDave Chinner align_alen - temp < orig_alen) 32552451337dSDave Chinner return -EINVAL; 325630f712c9SDave Chinner /* 325730f712c9SDave Chinner * Try to fix it by moving the start up. 325830f712c9SDave Chinner */ 325930f712c9SDave Chinner if (align_off + temp <= orig_off) { 326030f712c9SDave Chinner align_alen -= temp; 326130f712c9SDave Chinner align_off += temp; 326230f712c9SDave Chinner } 326330f712c9SDave Chinner /* 326430f712c9SDave Chinner * Try to fix it by moving the end in. 326530f712c9SDave Chinner */ 326630f712c9SDave Chinner else if (align_off + align_alen - temp >= orig_end) 326730f712c9SDave Chinner align_alen -= temp; 326830f712c9SDave Chinner /* 326930f712c9SDave Chinner * Set the start to the minimum then trim the length. 327030f712c9SDave Chinner */ 327130f712c9SDave Chinner else { 327230f712c9SDave Chinner align_alen -= orig_off - align_off; 327330f712c9SDave Chinner align_off = orig_off; 327430f712c9SDave Chinner align_alen -= align_alen % mp->m_sb.sb_rextsize; 327530f712c9SDave Chinner } 327630f712c9SDave Chinner /* 327730f712c9SDave Chinner * Result doesn't cover the request, fail it. 327830f712c9SDave Chinner */ 327930f712c9SDave Chinner if (orig_off < align_off || orig_end > align_off + align_alen) 32802451337dSDave Chinner return -EINVAL; 328130f712c9SDave Chinner } else { 328230f712c9SDave Chinner ASSERT(orig_off >= align_off); 32836dea405eSDave Chinner /* see MAXEXTLEN handling above */ 32846dea405eSDave Chinner ASSERT(orig_end <= align_off + align_alen || 32856dea405eSDave Chinner align_alen + extsz > MAXEXTLEN); 328630f712c9SDave Chinner } 328730f712c9SDave Chinner 328830f712c9SDave Chinner #ifdef DEBUG 328930f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) 329030f712c9SDave Chinner ASSERT(align_off + align_alen <= gotp->br_startoff); 329130f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) 329230f712c9SDave Chinner ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); 329330f712c9SDave Chinner #endif 329430f712c9SDave Chinner 329530f712c9SDave Chinner *lenp = align_alen; 329630f712c9SDave Chinner *offp = align_off; 329730f712c9SDave Chinner return 0; 329830f712c9SDave Chinner } 329930f712c9SDave Chinner 330030f712c9SDave Chinner #define XFS_ALLOC_GAP_UNITS 4 330130f712c9SDave Chinner 330230f712c9SDave Chinner void 330330f712c9SDave Chinner xfs_bmap_adjacent( 330430f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 330530f712c9SDave Chinner { 330630f712c9SDave Chinner xfs_fsblock_t adjust; /* adjustment to block numbers */ 330730f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 330830f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 330930f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 331030f712c9SDave Chinner int rt; /* true if inode is realtime */ 331130f712c9SDave Chinner 331230f712c9SDave Chinner #define ISVALID(x,y) \ 331330f712c9SDave Chinner (rt ? \ 331430f712c9SDave Chinner (x) < mp->m_sb.sb_rblocks : \ 331530f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \ 331630f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \ 331730f712c9SDave Chinner XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks) 331830f712c9SDave Chinner 331930f712c9SDave Chinner mp = ap->ip->i_mount; 332030f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 3321292378edSDave Chinner rt = XFS_IS_REALTIME_INODE(ap->ip) && 3322292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype); 332330f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 332430f712c9SDave Chinner /* 332530f712c9SDave Chinner * If allocating at eof, and there's a previous real block, 332630f712c9SDave Chinner * try to use its last block as our starting point. 332730f712c9SDave Chinner */ 332830f712c9SDave Chinner if (ap->eof && ap->prev.br_startoff != NULLFILEOFF && 332930f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 333030f712c9SDave Chinner ISVALID(ap->prev.br_startblock + ap->prev.br_blockcount, 333130f712c9SDave Chinner ap->prev.br_startblock)) { 333230f712c9SDave Chinner ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount; 333330f712c9SDave Chinner /* 333430f712c9SDave Chinner * Adjust for the gap between prevp and us. 333530f712c9SDave Chinner */ 333630f712c9SDave Chinner adjust = ap->offset - 333730f712c9SDave Chinner (ap->prev.br_startoff + ap->prev.br_blockcount); 333830f712c9SDave Chinner if (adjust && 333930f712c9SDave Chinner ISVALID(ap->blkno + adjust, ap->prev.br_startblock)) 334030f712c9SDave Chinner ap->blkno += adjust; 334130f712c9SDave Chinner } 334230f712c9SDave Chinner /* 334330f712c9SDave Chinner * If not at eof, then compare the two neighbor blocks. 334430f712c9SDave Chinner * Figure out whether either one gives us a good starting point, 334530f712c9SDave Chinner * and pick the better one. 334630f712c9SDave Chinner */ 334730f712c9SDave Chinner else if (!ap->eof) { 334830f712c9SDave Chinner xfs_fsblock_t gotbno; /* right side block number */ 334930f712c9SDave Chinner xfs_fsblock_t gotdiff=0; /* right side difference */ 335030f712c9SDave Chinner xfs_fsblock_t prevbno; /* left side block number */ 335130f712c9SDave Chinner xfs_fsblock_t prevdiff=0; /* left side difference */ 335230f712c9SDave Chinner 335330f712c9SDave Chinner /* 335430f712c9SDave Chinner * If there's a previous (left) block, select a requested 335530f712c9SDave Chinner * start block based on it. 335630f712c9SDave Chinner */ 335730f712c9SDave Chinner if (ap->prev.br_startoff != NULLFILEOFF && 335830f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 335930f712c9SDave Chinner (prevbno = ap->prev.br_startblock + 336030f712c9SDave Chinner ap->prev.br_blockcount) && 336130f712c9SDave Chinner ISVALID(prevbno, ap->prev.br_startblock)) { 336230f712c9SDave Chinner /* 336330f712c9SDave Chinner * Calculate gap to end of previous block. 336430f712c9SDave Chinner */ 336530f712c9SDave Chinner adjust = prevdiff = ap->offset - 336630f712c9SDave Chinner (ap->prev.br_startoff + 336730f712c9SDave Chinner ap->prev.br_blockcount); 336830f712c9SDave Chinner /* 336930f712c9SDave Chinner * Figure the startblock based on the previous block's 337030f712c9SDave Chinner * end and the gap size. 337130f712c9SDave Chinner * Heuristic! 337230f712c9SDave Chinner * If the gap is large relative to the piece we're 337330f712c9SDave Chinner * allocating, or using it gives us an invalid block 337430f712c9SDave Chinner * number, then just use the end of the previous block. 337530f712c9SDave Chinner */ 337630f712c9SDave Chinner if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 337730f712c9SDave Chinner ISVALID(prevbno + prevdiff, 337830f712c9SDave Chinner ap->prev.br_startblock)) 337930f712c9SDave Chinner prevbno += adjust; 338030f712c9SDave Chinner else 338130f712c9SDave Chinner prevdiff += adjust; 338230f712c9SDave Chinner /* 338330f712c9SDave Chinner * If the firstblock forbids it, can't use it, 338430f712c9SDave Chinner * must use default. 338530f712c9SDave Chinner */ 338630f712c9SDave Chinner if (!rt && !nullfb && 338730f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno) 338830f712c9SDave Chinner prevbno = NULLFSBLOCK; 338930f712c9SDave Chinner } 339030f712c9SDave Chinner /* 339130f712c9SDave Chinner * No previous block or can't follow it, just default. 339230f712c9SDave Chinner */ 339330f712c9SDave Chinner else 339430f712c9SDave Chinner prevbno = NULLFSBLOCK; 339530f712c9SDave Chinner /* 339630f712c9SDave Chinner * If there's a following (right) block, select a requested 339730f712c9SDave Chinner * start block based on it. 339830f712c9SDave Chinner */ 339930f712c9SDave Chinner if (!isnullstartblock(ap->got.br_startblock)) { 340030f712c9SDave Chinner /* 340130f712c9SDave Chinner * Calculate gap to start of next block. 340230f712c9SDave Chinner */ 340330f712c9SDave Chinner adjust = gotdiff = ap->got.br_startoff - ap->offset; 340430f712c9SDave Chinner /* 340530f712c9SDave Chinner * Figure the startblock based on the next block's 340630f712c9SDave Chinner * start and the gap size. 340730f712c9SDave Chinner */ 340830f712c9SDave Chinner gotbno = ap->got.br_startblock; 340930f712c9SDave Chinner /* 341030f712c9SDave Chinner * Heuristic! 341130f712c9SDave Chinner * If the gap is large relative to the piece we're 341230f712c9SDave Chinner * allocating, or using it gives us an invalid block 341330f712c9SDave Chinner * number, then just use the start of the next block 341430f712c9SDave Chinner * offset by our length. 341530f712c9SDave Chinner */ 341630f712c9SDave Chinner if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 341730f712c9SDave Chinner ISVALID(gotbno - gotdiff, gotbno)) 341830f712c9SDave Chinner gotbno -= adjust; 341930f712c9SDave Chinner else if (ISVALID(gotbno - ap->length, gotbno)) { 342030f712c9SDave Chinner gotbno -= ap->length; 342130f712c9SDave Chinner gotdiff += adjust - ap->length; 342230f712c9SDave Chinner } else 342330f712c9SDave Chinner gotdiff += adjust; 342430f712c9SDave Chinner /* 342530f712c9SDave Chinner * If the firstblock forbids it, can't use it, 342630f712c9SDave Chinner * must use default. 342730f712c9SDave Chinner */ 342830f712c9SDave Chinner if (!rt && !nullfb && 342930f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno) 343030f712c9SDave Chinner gotbno = NULLFSBLOCK; 343130f712c9SDave Chinner } 343230f712c9SDave Chinner /* 343330f712c9SDave Chinner * No next block, just default. 343430f712c9SDave Chinner */ 343530f712c9SDave Chinner else 343630f712c9SDave Chinner gotbno = NULLFSBLOCK; 343730f712c9SDave Chinner /* 343830f712c9SDave Chinner * If both valid, pick the better one, else the only good 343930f712c9SDave Chinner * one, else ap->blkno is already set (to 0 or the inode block). 344030f712c9SDave Chinner */ 344130f712c9SDave Chinner if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK) 344230f712c9SDave Chinner ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno; 344330f712c9SDave Chinner else if (prevbno != NULLFSBLOCK) 344430f712c9SDave Chinner ap->blkno = prevbno; 344530f712c9SDave Chinner else if (gotbno != NULLFSBLOCK) 344630f712c9SDave Chinner ap->blkno = gotbno; 344730f712c9SDave Chinner } 344830f712c9SDave Chinner #undef ISVALID 344930f712c9SDave Chinner } 345030f712c9SDave Chinner 345130f712c9SDave Chinner static int 345230f712c9SDave Chinner xfs_bmap_longest_free_extent( 345330f712c9SDave Chinner struct xfs_trans *tp, 345430f712c9SDave Chinner xfs_agnumber_t ag, 345530f712c9SDave Chinner xfs_extlen_t *blen, 345630f712c9SDave Chinner int *notinit) 345730f712c9SDave Chinner { 345830f712c9SDave Chinner struct xfs_mount *mp = tp->t_mountp; 345930f712c9SDave Chinner struct xfs_perag *pag; 346030f712c9SDave Chinner xfs_extlen_t longest; 346130f712c9SDave Chinner int error = 0; 346230f712c9SDave Chinner 346330f712c9SDave Chinner pag = xfs_perag_get(mp, ag); 346430f712c9SDave Chinner if (!pag->pagf_init) { 346530f712c9SDave Chinner error = xfs_alloc_pagf_init(mp, tp, ag, XFS_ALLOC_FLAG_TRYLOCK); 346630f712c9SDave Chinner if (error) 346730f712c9SDave Chinner goto out; 346830f712c9SDave Chinner 346930f712c9SDave Chinner if (!pag->pagf_init) { 347030f712c9SDave Chinner *notinit = 1; 347130f712c9SDave Chinner goto out; 347230f712c9SDave Chinner } 347330f712c9SDave Chinner } 347430f712c9SDave Chinner 347550adbcb4SDave Chinner longest = xfs_alloc_longest_free_extent(mp, pag, 34763fd129b6SDarrick J. Wong xfs_alloc_min_freelist(mp, pag), 34773fd129b6SDarrick J. Wong xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE)); 347830f712c9SDave Chinner if (*blen < longest) 347930f712c9SDave Chinner *blen = longest; 348030f712c9SDave Chinner 348130f712c9SDave Chinner out: 348230f712c9SDave Chinner xfs_perag_put(pag); 348330f712c9SDave Chinner return error; 348430f712c9SDave Chinner } 348530f712c9SDave Chinner 348630f712c9SDave Chinner static void 348730f712c9SDave Chinner xfs_bmap_select_minlen( 348830f712c9SDave Chinner struct xfs_bmalloca *ap, 348930f712c9SDave Chinner struct xfs_alloc_arg *args, 349030f712c9SDave Chinner xfs_extlen_t *blen, 349130f712c9SDave Chinner int notinit) 349230f712c9SDave Chinner { 349330f712c9SDave Chinner if (notinit || *blen < ap->minlen) { 349430f712c9SDave Chinner /* 349530f712c9SDave Chinner * Since we did a BUF_TRYLOCK above, it is possible that 349630f712c9SDave Chinner * there is space for this request. 349730f712c9SDave Chinner */ 349830f712c9SDave Chinner args->minlen = ap->minlen; 349930f712c9SDave Chinner } else if (*blen < args->maxlen) { 350030f712c9SDave Chinner /* 350130f712c9SDave Chinner * If the best seen length is less than the request length, 350230f712c9SDave Chinner * use the best as the minimum. 350330f712c9SDave Chinner */ 350430f712c9SDave Chinner args->minlen = *blen; 350530f712c9SDave Chinner } else { 350630f712c9SDave Chinner /* 350730f712c9SDave Chinner * Otherwise we've seen an extent as big as maxlen, use that 350830f712c9SDave Chinner * as the minimum. 350930f712c9SDave Chinner */ 351030f712c9SDave Chinner args->minlen = args->maxlen; 351130f712c9SDave Chinner } 351230f712c9SDave Chinner } 351330f712c9SDave Chinner 351430f712c9SDave Chinner STATIC int 351530f712c9SDave Chinner xfs_bmap_btalloc_nullfb( 351630f712c9SDave Chinner struct xfs_bmalloca *ap, 351730f712c9SDave Chinner struct xfs_alloc_arg *args, 351830f712c9SDave Chinner xfs_extlen_t *blen) 351930f712c9SDave Chinner { 352030f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 352130f712c9SDave Chinner xfs_agnumber_t ag, startag; 352230f712c9SDave Chinner int notinit = 0; 352330f712c9SDave Chinner int error; 352430f712c9SDave Chinner 352530f712c9SDave Chinner args->type = XFS_ALLOCTYPE_START_BNO; 352630f712c9SDave Chinner args->total = ap->total; 352730f712c9SDave Chinner 352830f712c9SDave Chinner startag = ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 352930f712c9SDave Chinner if (startag == NULLAGNUMBER) 353030f712c9SDave Chinner startag = ag = 0; 353130f712c9SDave Chinner 353230f712c9SDave Chinner while (*blen < args->maxlen) { 353330f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 353430f712c9SDave Chinner ¬init); 353530f712c9SDave Chinner if (error) 353630f712c9SDave Chinner return error; 353730f712c9SDave Chinner 353830f712c9SDave Chinner if (++ag == mp->m_sb.sb_agcount) 353930f712c9SDave Chinner ag = 0; 354030f712c9SDave Chinner if (ag == startag) 354130f712c9SDave Chinner break; 354230f712c9SDave Chinner } 354330f712c9SDave Chinner 354430f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 354530f712c9SDave Chinner return 0; 354630f712c9SDave Chinner } 354730f712c9SDave Chinner 354830f712c9SDave Chinner STATIC int 354930f712c9SDave Chinner xfs_bmap_btalloc_filestreams( 355030f712c9SDave Chinner struct xfs_bmalloca *ap, 355130f712c9SDave Chinner struct xfs_alloc_arg *args, 355230f712c9SDave Chinner xfs_extlen_t *blen) 355330f712c9SDave Chinner { 355430f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 355530f712c9SDave Chinner xfs_agnumber_t ag; 355630f712c9SDave Chinner int notinit = 0; 355730f712c9SDave Chinner int error; 355830f712c9SDave Chinner 355930f712c9SDave Chinner args->type = XFS_ALLOCTYPE_NEAR_BNO; 356030f712c9SDave Chinner args->total = ap->total; 356130f712c9SDave Chinner 356230f712c9SDave Chinner ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 356330f712c9SDave Chinner if (ag == NULLAGNUMBER) 356430f712c9SDave Chinner ag = 0; 356530f712c9SDave Chinner 356630f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, ¬init); 356730f712c9SDave Chinner if (error) 356830f712c9SDave Chinner return error; 356930f712c9SDave Chinner 357030f712c9SDave Chinner if (*blen < args->maxlen) { 357130f712c9SDave Chinner error = xfs_filestream_new_ag(ap, &ag); 357230f712c9SDave Chinner if (error) 357330f712c9SDave Chinner return error; 357430f712c9SDave Chinner 357530f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 357630f712c9SDave Chinner ¬init); 357730f712c9SDave Chinner if (error) 357830f712c9SDave Chinner return error; 357930f712c9SDave Chinner 358030f712c9SDave Chinner } 358130f712c9SDave Chinner 358230f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 358330f712c9SDave Chinner 358430f712c9SDave Chinner /* 358530f712c9SDave Chinner * Set the failure fallback case to look in the selected AG as stream 358630f712c9SDave Chinner * may have moved. 358730f712c9SDave Chinner */ 358830f712c9SDave Chinner ap->blkno = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0); 358930f712c9SDave Chinner return 0; 359030f712c9SDave Chinner } 359130f712c9SDave Chinner 359230f712c9SDave Chinner STATIC int 359330f712c9SDave Chinner xfs_bmap_btalloc( 359430f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 359530f712c9SDave Chinner { 359630f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 359730f712c9SDave Chinner xfs_alloctype_t atype = 0; /* type for allocation routines */ 3598292378edSDave Chinner xfs_extlen_t align = 0; /* minimum allocation alignment */ 359930f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 360030f712c9SDave Chinner xfs_agnumber_t ag; 360130f712c9SDave Chinner xfs_alloc_arg_t args; 360230f712c9SDave Chinner xfs_extlen_t blen; 360330f712c9SDave Chinner xfs_extlen_t nextminlen = 0; 360430f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 360530f712c9SDave Chinner int isaligned; 360630f712c9SDave Chinner int tryagain; 360730f712c9SDave Chinner int error; 360830f712c9SDave Chinner int stripe_align; 360930f712c9SDave Chinner 361030f712c9SDave Chinner ASSERT(ap->length); 361130f712c9SDave Chinner 361230f712c9SDave Chinner mp = ap->ip->i_mount; 361330f712c9SDave Chinner 361430f712c9SDave Chinner /* stripe alignment for allocation is determined by mount parameters */ 361530f712c9SDave Chinner stripe_align = 0; 361630f712c9SDave Chinner if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC)) 361730f712c9SDave Chinner stripe_align = mp->m_swidth; 361830f712c9SDave Chinner else if (mp->m_dalign) 361930f712c9SDave Chinner stripe_align = mp->m_dalign; 362030f712c9SDave Chinner 3621f7ca3522SDarrick J. Wong if (ap->flags & XFS_BMAPI_COWFORK) 3622f7ca3522SDarrick J. Wong align = xfs_get_cowextsz_hint(ap->ip); 3623f7ca3522SDarrick J. Wong else if (xfs_alloc_is_userdata(ap->datatype)) 3624292378edSDave Chinner align = xfs_get_extsz_hint(ap->ip); 362530f712c9SDave Chinner if (unlikely(align)) { 362630f712c9SDave Chinner error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, 362730f712c9SDave Chinner align, 0, ap->eof, 0, ap->conv, 362830f712c9SDave Chinner &ap->offset, &ap->length); 362930f712c9SDave Chinner ASSERT(!error); 363030f712c9SDave Chinner ASSERT(ap->length); 363130f712c9SDave Chinner } 363230f712c9SDave Chinner 363330f712c9SDave Chinner 363430f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 363530f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 363630f712c9SDave Chinner if (nullfb) { 3637292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3638292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) { 363930f712c9SDave Chinner ag = xfs_filestream_lookup_ag(ap->ip); 364030f712c9SDave Chinner ag = (ag != NULLAGNUMBER) ? ag : 0; 364130f712c9SDave Chinner ap->blkno = XFS_AGB_TO_FSB(mp, ag, 0); 364230f712c9SDave Chinner } else { 364330f712c9SDave Chinner ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino); 364430f712c9SDave Chinner } 364530f712c9SDave Chinner } else 364630f712c9SDave Chinner ap->blkno = *ap->firstblock; 364730f712c9SDave Chinner 364830f712c9SDave Chinner xfs_bmap_adjacent(ap); 364930f712c9SDave Chinner 365030f712c9SDave Chinner /* 365130f712c9SDave Chinner * If allowed, use ap->blkno; otherwise must use firstblock since 365230f712c9SDave Chinner * it's in the right allocation group. 365330f712c9SDave Chinner */ 365430f712c9SDave Chinner if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno) 365530f712c9SDave Chinner ; 365630f712c9SDave Chinner else 365730f712c9SDave Chinner ap->blkno = *ap->firstblock; 365830f712c9SDave Chinner /* 365930f712c9SDave Chinner * Normal allocation, done through xfs_alloc_vextent. 366030f712c9SDave Chinner */ 366130f712c9SDave Chinner tryagain = isaligned = 0; 366230f712c9SDave Chinner memset(&args, 0, sizeof(args)); 366330f712c9SDave Chinner args.tp = ap->tp; 366430f712c9SDave Chinner args.mp = mp; 366530f712c9SDave Chinner args.fsbno = ap->blkno; 3666340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&args.oinfo); 366730f712c9SDave Chinner 366830f712c9SDave Chinner /* Trim the allocation back to the maximum an AG can fit. */ 366952548852SDarrick J. Wong args.maxlen = MIN(ap->length, mp->m_ag_max_usable); 367030f712c9SDave Chinner args.firstblock = *ap->firstblock; 367130f712c9SDave Chinner blen = 0; 367230f712c9SDave Chinner if (nullfb) { 367330f712c9SDave Chinner /* 367430f712c9SDave Chinner * Search for an allocation group with a single extent large 367530f712c9SDave Chinner * enough for the request. If one isn't found, then adjust 367630f712c9SDave Chinner * the minimum allocation size to the largest space found. 367730f712c9SDave Chinner */ 3678292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3679292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) 368030f712c9SDave Chinner error = xfs_bmap_btalloc_filestreams(ap, &args, &blen); 368130f712c9SDave Chinner else 368230f712c9SDave Chinner error = xfs_bmap_btalloc_nullfb(ap, &args, &blen); 368330f712c9SDave Chinner if (error) 368430f712c9SDave Chinner return error; 36852c3234d1SDarrick J. Wong } else if (ap->dfops->dop_low) { 368630f712c9SDave Chinner if (xfs_inode_is_filestream(ap->ip)) 368730f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 368830f712c9SDave Chinner else 368930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 369030f712c9SDave Chinner args.total = args.minlen = ap->minlen; 369130f712c9SDave Chinner } else { 369230f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 369330f712c9SDave Chinner args.total = ap->total; 369430f712c9SDave Chinner args.minlen = ap->minlen; 369530f712c9SDave Chinner } 369630f712c9SDave Chinner /* apply extent size hints if obtained earlier */ 369730f712c9SDave Chinner if (unlikely(align)) { 369830f712c9SDave Chinner args.prod = align; 369930f712c9SDave Chinner if ((args.mod = (xfs_extlen_t)do_mod(ap->offset, args.prod))) 370030f712c9SDave Chinner args.mod = (xfs_extlen_t)(args.prod - args.mod); 370109cbfeafSKirill A. Shutemov } else if (mp->m_sb.sb_blocksize >= PAGE_SIZE) { 370230f712c9SDave Chinner args.prod = 1; 370330f712c9SDave Chinner args.mod = 0; 370430f712c9SDave Chinner } else { 370509cbfeafSKirill A. Shutemov args.prod = PAGE_SIZE >> mp->m_sb.sb_blocklog; 370630f712c9SDave Chinner if ((args.mod = (xfs_extlen_t)(do_mod(ap->offset, args.prod)))) 370730f712c9SDave Chinner args.mod = (xfs_extlen_t)(args.prod - args.mod); 370830f712c9SDave Chinner } 370930f712c9SDave Chinner /* 371030f712c9SDave Chinner * If we are not low on available data blocks, and the 371130f712c9SDave Chinner * underlying logical volume manager is a stripe, and 371230f712c9SDave Chinner * the file offset is zero then try to allocate data 371330f712c9SDave Chinner * blocks on stripe unit boundary. 371430f712c9SDave Chinner * NOTE: ap->aeof is only set if the allocation length 371530f712c9SDave Chinner * is >= the stripe unit and the allocation offset is 371630f712c9SDave Chinner * at the end of file. 371730f712c9SDave Chinner */ 37182c3234d1SDarrick J. Wong if (!ap->dfops->dop_low && ap->aeof) { 371930f712c9SDave Chinner if (!ap->offset) { 372030f712c9SDave Chinner args.alignment = stripe_align; 372130f712c9SDave Chinner atype = args.type; 372230f712c9SDave Chinner isaligned = 1; 372330f712c9SDave Chinner /* 372430f712c9SDave Chinner * Adjust for alignment 372530f712c9SDave Chinner */ 372630f712c9SDave Chinner if (blen > args.alignment && blen <= args.maxlen) 372730f712c9SDave Chinner args.minlen = blen - args.alignment; 372830f712c9SDave Chinner args.minalignslop = 0; 372930f712c9SDave Chinner } else { 373030f712c9SDave Chinner /* 373130f712c9SDave Chinner * First try an exact bno allocation. 373230f712c9SDave Chinner * If it fails then do a near or start bno 373330f712c9SDave Chinner * allocation with alignment turned on. 373430f712c9SDave Chinner */ 373530f712c9SDave Chinner atype = args.type; 373630f712c9SDave Chinner tryagain = 1; 373730f712c9SDave Chinner args.type = XFS_ALLOCTYPE_THIS_BNO; 373830f712c9SDave Chinner args.alignment = 1; 373930f712c9SDave Chinner /* 374030f712c9SDave Chinner * Compute the minlen+alignment for the 374130f712c9SDave Chinner * next case. Set slop so that the value 374230f712c9SDave Chinner * of minlen+alignment+slop doesn't go up 374330f712c9SDave Chinner * between the calls. 374430f712c9SDave Chinner */ 374530f712c9SDave Chinner if (blen > stripe_align && blen <= args.maxlen) 374630f712c9SDave Chinner nextminlen = blen - stripe_align; 374730f712c9SDave Chinner else 374830f712c9SDave Chinner nextminlen = args.minlen; 374930f712c9SDave Chinner if (nextminlen + stripe_align > args.minlen + 1) 375030f712c9SDave Chinner args.minalignslop = 375130f712c9SDave Chinner nextminlen + stripe_align - 375230f712c9SDave Chinner args.minlen - 1; 375330f712c9SDave Chinner else 375430f712c9SDave Chinner args.minalignslop = 0; 375530f712c9SDave Chinner } 375630f712c9SDave Chinner } else { 375730f712c9SDave Chinner args.alignment = 1; 375830f712c9SDave Chinner args.minalignslop = 0; 375930f712c9SDave Chinner } 376030f712c9SDave Chinner args.minleft = ap->minleft; 376130f712c9SDave Chinner args.wasdel = ap->wasdel; 37623fd129b6SDarrick J. Wong args.resv = XFS_AG_RESV_NONE; 3763292378edSDave Chinner args.datatype = ap->datatype; 3764292378edSDave Chinner if (ap->datatype & XFS_ALLOC_USERDATA_ZERO) 37653fbbbea3SDave Chinner args.ip = ap->ip; 37663fbbbea3SDave Chinner 37673fbbbea3SDave Chinner error = xfs_alloc_vextent(&args); 37683fbbbea3SDave Chinner if (error) 376930f712c9SDave Chinner return error; 37703fbbbea3SDave Chinner 377130f712c9SDave Chinner if (tryagain && args.fsbno == NULLFSBLOCK) { 377230f712c9SDave Chinner /* 377330f712c9SDave Chinner * Exact allocation failed. Now try with alignment 377430f712c9SDave Chinner * turned on. 377530f712c9SDave Chinner */ 377630f712c9SDave Chinner args.type = atype; 377730f712c9SDave Chinner args.fsbno = ap->blkno; 377830f712c9SDave Chinner args.alignment = stripe_align; 377930f712c9SDave Chinner args.minlen = nextminlen; 378030f712c9SDave Chinner args.minalignslop = 0; 378130f712c9SDave Chinner isaligned = 1; 378230f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 378330f712c9SDave Chinner return error; 378430f712c9SDave Chinner } 378530f712c9SDave Chinner if (isaligned && args.fsbno == NULLFSBLOCK) { 378630f712c9SDave Chinner /* 378730f712c9SDave Chinner * allocation failed, so turn off alignment and 378830f712c9SDave Chinner * try again. 378930f712c9SDave Chinner */ 379030f712c9SDave Chinner args.type = atype; 379130f712c9SDave Chinner args.fsbno = ap->blkno; 379230f712c9SDave Chinner args.alignment = 0; 379330f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 379430f712c9SDave Chinner return error; 379530f712c9SDave Chinner } 379630f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb && 379730f712c9SDave Chinner args.minlen > ap->minlen) { 379830f712c9SDave Chinner args.minlen = ap->minlen; 379930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 380030f712c9SDave Chinner args.fsbno = ap->blkno; 380130f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 380230f712c9SDave Chinner return error; 380330f712c9SDave Chinner } 380430f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb) { 380530f712c9SDave Chinner args.fsbno = 0; 380630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 380730f712c9SDave Chinner args.total = ap->minlen; 380830f712c9SDave Chinner args.minleft = 0; 380930f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 381030f712c9SDave Chinner return error; 38112c3234d1SDarrick J. Wong ap->dfops->dop_low = true; 381230f712c9SDave Chinner } 381330f712c9SDave Chinner if (args.fsbno != NULLFSBLOCK) { 381430f712c9SDave Chinner /* 381530f712c9SDave Chinner * check the allocation happened at the same or higher AG than 381630f712c9SDave Chinner * the first block that was allocated. 381730f712c9SDave Chinner */ 381830f712c9SDave Chinner ASSERT(*ap->firstblock == NULLFSBLOCK || 381930f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *ap->firstblock) == 382030f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, args.fsbno) || 38212c3234d1SDarrick J. Wong (ap->dfops->dop_low && 382230f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *ap->firstblock) < 382330f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, args.fsbno))); 382430f712c9SDave Chinner 382530f712c9SDave Chinner ap->blkno = args.fsbno; 382630f712c9SDave Chinner if (*ap->firstblock == NULLFSBLOCK) 382730f712c9SDave Chinner *ap->firstblock = args.fsbno; 382830f712c9SDave Chinner ASSERT(nullfb || fb_agno == args.agno || 38292c3234d1SDarrick J. Wong (ap->dfops->dop_low && fb_agno < args.agno)); 383030f712c9SDave Chinner ap->length = args.len; 383160b4984fSDarrick J. Wong if (!(ap->flags & XFS_BMAPI_COWFORK)) 383230f712c9SDave Chinner ap->ip->i_d.di_nblocks += args.len; 383330f712c9SDave Chinner xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); 383430f712c9SDave Chinner if (ap->wasdel) 383530f712c9SDave Chinner ap->ip->i_delayed_blks -= args.len; 383630f712c9SDave Chinner /* 383730f712c9SDave Chinner * Adjust the disk quota also. This was reserved 383830f712c9SDave Chinner * earlier. 383930f712c9SDave Chinner */ 384030f712c9SDave Chinner xfs_trans_mod_dquot_byino(ap->tp, ap->ip, 384130f712c9SDave Chinner ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT : 384230f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 384330f712c9SDave Chinner (long) args.len); 384430f712c9SDave Chinner } else { 384530f712c9SDave Chinner ap->blkno = NULLFSBLOCK; 384630f712c9SDave Chinner ap->length = 0; 384730f712c9SDave Chinner } 384830f712c9SDave Chinner return 0; 384930f712c9SDave Chinner } 385030f712c9SDave Chinner 385130f712c9SDave Chinner /* 3852f65306eaSDarrick J. Wong * For a remap operation, just "allocate" an extent at the address that the 3853f65306eaSDarrick J. Wong * caller passed in, and ensure that the AGFL is the right size. The caller 3854f65306eaSDarrick J. Wong * will then map the "allocated" extent into the file somewhere. 3855f65306eaSDarrick J. Wong */ 3856f65306eaSDarrick J. Wong STATIC int 3857f65306eaSDarrick J. Wong xfs_bmap_remap_alloc( 3858f65306eaSDarrick J. Wong struct xfs_bmalloca *ap) 3859f65306eaSDarrick J. Wong { 3860f65306eaSDarrick J. Wong struct xfs_trans *tp = ap->tp; 3861f65306eaSDarrick J. Wong struct xfs_mount *mp = tp->t_mountp; 3862f65306eaSDarrick J. Wong xfs_agblock_t bno; 3863f65306eaSDarrick J. Wong struct xfs_alloc_arg args; 3864f65306eaSDarrick J. Wong int error; 3865f65306eaSDarrick J. Wong 3866f65306eaSDarrick J. Wong /* 3867f65306eaSDarrick J. Wong * validate that the block number is legal - the enables us to detect 3868f65306eaSDarrick J. Wong * and handle a silent filesystem corruption rather than crashing. 3869f65306eaSDarrick J. Wong */ 3870f65306eaSDarrick J. Wong memset(&args, 0, sizeof(struct xfs_alloc_arg)); 3871f65306eaSDarrick J. Wong args.tp = ap->tp; 3872f65306eaSDarrick J. Wong args.mp = ap->tp->t_mountp; 3873f65306eaSDarrick J. Wong bno = *ap->firstblock; 3874f65306eaSDarrick J. Wong args.agno = XFS_FSB_TO_AGNO(mp, bno); 3875f65306eaSDarrick J. Wong args.agbno = XFS_FSB_TO_AGBNO(mp, bno); 3876f65306eaSDarrick J. Wong if (args.agno >= mp->m_sb.sb_agcount || 3877f65306eaSDarrick J. Wong args.agbno >= mp->m_sb.sb_agblocks) 3878f65306eaSDarrick J. Wong return -EFSCORRUPTED; 3879f65306eaSDarrick J. Wong 3880f65306eaSDarrick J. Wong /* "Allocate" the extent from the range we passed in. */ 3881f65306eaSDarrick J. Wong trace_xfs_bmap_remap_alloc(ap->ip, *ap->firstblock, ap->length); 3882f65306eaSDarrick J. Wong ap->blkno = bno; 3883f65306eaSDarrick J. Wong ap->ip->i_d.di_nblocks += ap->length; 3884f65306eaSDarrick J. Wong xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); 3885f65306eaSDarrick J. Wong 3886f65306eaSDarrick J. Wong /* Fix the freelist, like a real allocator does. */ 3887f65306eaSDarrick J. Wong args.datatype = ap->datatype; 3888f65306eaSDarrick J. Wong args.pag = xfs_perag_get(args.mp, args.agno); 3889f65306eaSDarrick J. Wong ASSERT(args.pag); 3890f65306eaSDarrick J. Wong 3891f65306eaSDarrick J. Wong /* 3892f65306eaSDarrick J. Wong * The freelist fixing code will decline the allocation if 3893f65306eaSDarrick J. Wong * the size and shape of the free space doesn't allow for 3894f65306eaSDarrick J. Wong * allocating the extent and updating all the metadata that 3895f65306eaSDarrick J. Wong * happens during an allocation. We're remapping, not 3896f65306eaSDarrick J. Wong * allocating, so skip that check by pretending to be freeing. 3897f65306eaSDarrick J. Wong */ 3898f65306eaSDarrick J. Wong error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING); 3899f65306eaSDarrick J. Wong xfs_perag_put(args.pag); 3900f65306eaSDarrick J. Wong if (error) 3901f65306eaSDarrick J. Wong trace_xfs_bmap_remap_alloc_error(ap->ip, error, _RET_IP_); 3902f65306eaSDarrick J. Wong return error; 3903f65306eaSDarrick J. Wong } 3904f65306eaSDarrick J. Wong 3905f65306eaSDarrick J. Wong /* 390630f712c9SDave Chinner * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. 390730f712c9SDave Chinner * It figures out where to ask the underlying allocator to put the new extent. 390830f712c9SDave Chinner */ 390930f712c9SDave Chinner STATIC int 391030f712c9SDave Chinner xfs_bmap_alloc( 391130f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 391230f712c9SDave Chinner { 3913f65306eaSDarrick J. Wong if (ap->flags & XFS_BMAPI_REMAP) 3914f65306eaSDarrick J. Wong return xfs_bmap_remap_alloc(ap); 3915292378edSDave Chinner if (XFS_IS_REALTIME_INODE(ap->ip) && 3916292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype)) 391730f712c9SDave Chinner return xfs_bmap_rtalloc(ap); 391830f712c9SDave Chinner return xfs_bmap_btalloc(ap); 391930f712c9SDave Chinner } 392030f712c9SDave Chinner 39210a0af28cSDarrick J. Wong /* Trim extent to fit a logical block range. */ 39220a0af28cSDarrick J. Wong void 39230a0af28cSDarrick J. Wong xfs_trim_extent( 39240a0af28cSDarrick J. Wong struct xfs_bmbt_irec *irec, 39250a0af28cSDarrick J. Wong xfs_fileoff_t bno, 39260a0af28cSDarrick J. Wong xfs_filblks_t len) 39270a0af28cSDarrick J. Wong { 39280a0af28cSDarrick J. Wong xfs_fileoff_t distance; 39290a0af28cSDarrick J. Wong xfs_fileoff_t end = bno + len; 39300a0af28cSDarrick J. Wong 39310a0af28cSDarrick J. Wong if (irec->br_startoff + irec->br_blockcount <= bno || 39320a0af28cSDarrick J. Wong irec->br_startoff >= end) { 39330a0af28cSDarrick J. Wong irec->br_blockcount = 0; 39340a0af28cSDarrick J. Wong return; 39350a0af28cSDarrick J. Wong } 39360a0af28cSDarrick J. Wong 39370a0af28cSDarrick J. Wong if (irec->br_startoff < bno) { 39380a0af28cSDarrick J. Wong distance = bno - irec->br_startoff; 39390a0af28cSDarrick J. Wong if (isnullstartblock(irec->br_startblock)) 39400a0af28cSDarrick J. Wong irec->br_startblock = DELAYSTARTBLOCK; 39410a0af28cSDarrick J. Wong if (irec->br_startblock != DELAYSTARTBLOCK && 39420a0af28cSDarrick J. Wong irec->br_startblock != HOLESTARTBLOCK) 39430a0af28cSDarrick J. Wong irec->br_startblock += distance; 39440a0af28cSDarrick J. Wong irec->br_startoff += distance; 39450a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 39460a0af28cSDarrick J. Wong } 39470a0af28cSDarrick J. Wong 39480a0af28cSDarrick J. Wong if (end < irec->br_startoff + irec->br_blockcount) { 39490a0af28cSDarrick J. Wong distance = irec->br_startoff + irec->br_blockcount - end; 39500a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 39510a0af28cSDarrick J. Wong } 39520a0af28cSDarrick J. Wong } 39530a0af28cSDarrick J. Wong 395430f712c9SDave Chinner /* 395530f712c9SDave Chinner * Trim the returned map to the required bounds 395630f712c9SDave Chinner */ 395730f712c9SDave Chinner STATIC void 395830f712c9SDave Chinner xfs_bmapi_trim_map( 395930f712c9SDave Chinner struct xfs_bmbt_irec *mval, 396030f712c9SDave Chinner struct xfs_bmbt_irec *got, 396130f712c9SDave Chinner xfs_fileoff_t *bno, 396230f712c9SDave Chinner xfs_filblks_t len, 396330f712c9SDave Chinner xfs_fileoff_t obno, 396430f712c9SDave Chinner xfs_fileoff_t end, 396530f712c9SDave Chinner int n, 396630f712c9SDave Chinner int flags) 396730f712c9SDave Chinner { 396830f712c9SDave Chinner if ((flags & XFS_BMAPI_ENTIRE) || 396930f712c9SDave Chinner got->br_startoff + got->br_blockcount <= obno) { 397030f712c9SDave Chinner *mval = *got; 397130f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 397230f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 397330f712c9SDave Chinner return; 397430f712c9SDave Chinner } 397530f712c9SDave Chinner 397630f712c9SDave Chinner if (obno > *bno) 397730f712c9SDave Chinner *bno = obno; 397830f712c9SDave Chinner ASSERT((*bno >= obno) || (n == 0)); 397930f712c9SDave Chinner ASSERT(*bno < end); 398030f712c9SDave Chinner mval->br_startoff = *bno; 398130f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 398230f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 398330f712c9SDave Chinner else 398430f712c9SDave Chinner mval->br_startblock = got->br_startblock + 398530f712c9SDave Chinner (*bno - got->br_startoff); 398630f712c9SDave Chinner /* 398730f712c9SDave Chinner * Return the minimum of what we got and what we asked for for 398830f712c9SDave Chinner * the length. We can use the len variable here because it is 398930f712c9SDave Chinner * modified below and we could have been there before coming 399030f712c9SDave Chinner * here if the first part of the allocation didn't overlap what 399130f712c9SDave Chinner * was asked for. 399230f712c9SDave Chinner */ 399330f712c9SDave Chinner mval->br_blockcount = XFS_FILBLKS_MIN(end - *bno, 399430f712c9SDave Chinner got->br_blockcount - (*bno - got->br_startoff)); 399530f712c9SDave Chinner mval->br_state = got->br_state; 399630f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 399730f712c9SDave Chinner return; 399830f712c9SDave Chinner } 399930f712c9SDave Chinner 400030f712c9SDave Chinner /* 400130f712c9SDave Chinner * Update and validate the extent map to return 400230f712c9SDave Chinner */ 400330f712c9SDave Chinner STATIC void 400430f712c9SDave Chinner xfs_bmapi_update_map( 400530f712c9SDave Chinner struct xfs_bmbt_irec **map, 400630f712c9SDave Chinner xfs_fileoff_t *bno, 400730f712c9SDave Chinner xfs_filblks_t *len, 400830f712c9SDave Chinner xfs_fileoff_t obno, 400930f712c9SDave Chinner xfs_fileoff_t end, 401030f712c9SDave Chinner int *n, 401130f712c9SDave Chinner int flags) 401230f712c9SDave Chinner { 401330f712c9SDave Chinner xfs_bmbt_irec_t *mval = *map; 401430f712c9SDave Chinner 401530f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || 401630f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= end)); 401730f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= *len) || 401830f712c9SDave Chinner (mval->br_startoff < obno)); 401930f712c9SDave Chinner 402030f712c9SDave Chinner *bno = mval->br_startoff + mval->br_blockcount; 402130f712c9SDave Chinner *len = end - *bno; 402230f712c9SDave Chinner if (*n > 0 && mval->br_startoff == mval[-1].br_startoff) { 402330f712c9SDave Chinner /* update previous map with new information */ 402430f712c9SDave Chinner ASSERT(mval->br_startblock == mval[-1].br_startblock); 402530f712c9SDave Chinner ASSERT(mval->br_blockcount > mval[-1].br_blockcount); 402630f712c9SDave Chinner ASSERT(mval->br_state == mval[-1].br_state); 402730f712c9SDave Chinner mval[-1].br_blockcount = mval->br_blockcount; 402830f712c9SDave Chinner mval[-1].br_state = mval->br_state; 402930f712c9SDave Chinner } else if (*n > 0 && mval->br_startblock != DELAYSTARTBLOCK && 403030f712c9SDave Chinner mval[-1].br_startblock != DELAYSTARTBLOCK && 403130f712c9SDave Chinner mval[-1].br_startblock != HOLESTARTBLOCK && 403230f712c9SDave Chinner mval->br_startblock == mval[-1].br_startblock + 403330f712c9SDave Chinner mval[-1].br_blockcount && 403430f712c9SDave Chinner ((flags & XFS_BMAPI_IGSTATE) || 403530f712c9SDave Chinner mval[-1].br_state == mval->br_state)) { 403630f712c9SDave Chinner ASSERT(mval->br_startoff == 403730f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount); 403830f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 403930f712c9SDave Chinner } else if (*n > 0 && 404030f712c9SDave Chinner mval->br_startblock == DELAYSTARTBLOCK && 404130f712c9SDave Chinner mval[-1].br_startblock == DELAYSTARTBLOCK && 404230f712c9SDave Chinner mval->br_startoff == 404330f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount) { 404430f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 404530f712c9SDave Chinner mval[-1].br_state = mval->br_state; 404630f712c9SDave Chinner } else if (!((*n == 0) && 404730f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= 404830f712c9SDave Chinner obno))) { 404930f712c9SDave Chinner mval++; 405030f712c9SDave Chinner (*n)++; 405130f712c9SDave Chinner } 405230f712c9SDave Chinner *map = mval; 405330f712c9SDave Chinner } 405430f712c9SDave Chinner 405530f712c9SDave Chinner /* 405630f712c9SDave Chinner * Map file blocks to filesystem blocks without allocation. 405730f712c9SDave Chinner */ 405830f712c9SDave Chinner int 405930f712c9SDave Chinner xfs_bmapi_read( 406030f712c9SDave Chinner struct xfs_inode *ip, 406130f712c9SDave Chinner xfs_fileoff_t bno, 406230f712c9SDave Chinner xfs_filblks_t len, 406330f712c9SDave Chinner struct xfs_bmbt_irec *mval, 406430f712c9SDave Chinner int *nmap, 406530f712c9SDave Chinner int flags) 406630f712c9SDave Chinner { 406730f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 406830f712c9SDave Chinner struct xfs_ifork *ifp; 406930f712c9SDave Chinner struct xfs_bmbt_irec got; 407030f712c9SDave Chinner xfs_fileoff_t obno; 407130f712c9SDave Chinner xfs_fileoff_t end; 4072334f3423SChristoph Hellwig xfs_extnum_t idx; 407330f712c9SDave Chinner int error; 4074334f3423SChristoph Hellwig bool eof = false; 407530f712c9SDave Chinner int n = 0; 40763993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 407730f712c9SDave Chinner 407830f712c9SDave Chinner ASSERT(*nmap >= 1); 407930f712c9SDave Chinner ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE| 40803993baebSDarrick J. Wong XFS_BMAPI_IGSTATE|XFS_BMAPI_COWFORK))); 408130f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)); 408230f712c9SDave Chinner 408330f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 408430f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 408530f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 408630f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 408730f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_read", XFS_ERRLEVEL_LOW, mp); 40882451337dSDave Chinner return -EFSCORRUPTED; 408930f712c9SDave Chinner } 409030f712c9SDave Chinner 409130f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 40922451337dSDave Chinner return -EIO; 409330f712c9SDave Chinner 4094ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapr); 409530f712c9SDave Chinner 409630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 409730f712c9SDave Chinner 40983993baebSDarrick J. Wong /* No CoW fork? Return a hole. */ 40993993baebSDarrick J. Wong if (whichfork == XFS_COW_FORK && !ifp) { 41003993baebSDarrick J. Wong mval->br_startoff = bno; 41013993baebSDarrick J. Wong mval->br_startblock = HOLESTARTBLOCK; 41023993baebSDarrick J. Wong mval->br_blockcount = len; 41033993baebSDarrick J. Wong mval->br_state = XFS_EXT_NORM; 41043993baebSDarrick J. Wong *nmap = 1; 41053993baebSDarrick J. Wong return 0; 41063993baebSDarrick J. Wong } 41073993baebSDarrick J. Wong 410830f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 410930f712c9SDave Chinner error = xfs_iread_extents(NULL, ip, whichfork); 411030f712c9SDave Chinner if (error) 411130f712c9SDave Chinner return error; 411230f712c9SDave Chinner } 411330f712c9SDave Chinner 4114334f3423SChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &idx, &got)) 4115334f3423SChristoph Hellwig eof = true; 411630f712c9SDave Chinner end = bno + len; 411730f712c9SDave Chinner obno = bno; 411830f712c9SDave Chinner 411930f712c9SDave Chinner while (bno < end && n < *nmap) { 412030f712c9SDave Chinner /* Reading past eof, act as though there's a hole up to end. */ 412130f712c9SDave Chinner if (eof) 412230f712c9SDave Chinner got.br_startoff = end; 412330f712c9SDave Chinner if (got.br_startoff > bno) { 412430f712c9SDave Chinner /* Reading in a hole. */ 412530f712c9SDave Chinner mval->br_startoff = bno; 412630f712c9SDave Chinner mval->br_startblock = HOLESTARTBLOCK; 412730f712c9SDave Chinner mval->br_blockcount = 412830f712c9SDave Chinner XFS_FILBLKS_MIN(len, got.br_startoff - bno); 412930f712c9SDave Chinner mval->br_state = XFS_EXT_NORM; 413030f712c9SDave Chinner bno += mval->br_blockcount; 413130f712c9SDave Chinner len -= mval->br_blockcount; 413230f712c9SDave Chinner mval++; 413330f712c9SDave Chinner n++; 413430f712c9SDave Chinner continue; 413530f712c9SDave Chinner } 413630f712c9SDave Chinner 413730f712c9SDave Chinner /* set up the extent map to return. */ 413830f712c9SDave Chinner xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags); 413930f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 414030f712c9SDave Chinner 414130f712c9SDave Chinner /* If we're done, stop now. */ 414230f712c9SDave Chinner if (bno >= end || n >= *nmap) 414330f712c9SDave Chinner break; 414430f712c9SDave Chinner 414530f712c9SDave Chinner /* Else go on to the next record. */ 4146334f3423SChristoph Hellwig if (!xfs_iext_get_extent(ifp, ++idx, &got)) 4147334f3423SChristoph Hellwig eof = true; 414830f712c9SDave Chinner } 414930f712c9SDave Chinner *nmap = n; 415030f712c9SDave Chinner return 0; 415130f712c9SDave Chinner } 415230f712c9SDave Chinner 415351446f5bSChristoph Hellwig int 415430f712c9SDave Chinner xfs_bmapi_reserve_delalloc( 415530f712c9SDave Chinner struct xfs_inode *ip, 4156be51f811SDarrick J. Wong int whichfork, 415730f712c9SDave Chinner xfs_fileoff_t aoff, 415830f712c9SDave Chinner xfs_filblks_t len, 415930f712c9SDave Chinner struct xfs_bmbt_irec *got, 416030f712c9SDave Chinner xfs_extnum_t *lastx, 416130f712c9SDave Chinner int eof) 416230f712c9SDave Chinner { 416330f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 4164be51f811SDarrick J. Wong struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 416530f712c9SDave Chinner xfs_extlen_t alen; 416630f712c9SDave Chinner xfs_extlen_t indlen; 416730f712c9SDave Chinner char rt = XFS_IS_REALTIME_INODE(ip); 416830f712c9SDave Chinner xfs_extlen_t extsz; 416930f712c9SDave Chinner int error; 417030f712c9SDave Chinner 417130f712c9SDave Chinner alen = XFS_FILBLKS_MIN(len, MAXEXTLEN); 417230f712c9SDave Chinner if (!eof) 417330f712c9SDave Chinner alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff); 417430f712c9SDave Chinner 417530f712c9SDave Chinner /* Figure out the extent size, adjust alen */ 4176f7ca3522SDarrick J. Wong if (whichfork == XFS_COW_FORK) 4177f7ca3522SDarrick J. Wong extsz = xfs_get_cowextsz_hint(ip); 4178f7ca3522SDarrick J. Wong else 417930f712c9SDave Chinner extsz = xfs_get_extsz_hint(ip); 418030f712c9SDave Chinner if (extsz) { 418165c5f419SChristoph Hellwig struct xfs_bmbt_irec prev; 418265c5f419SChristoph Hellwig 418365c5f419SChristoph Hellwig if (!xfs_iext_get_extent(ifp, *lastx - 1, &prev)) 418465c5f419SChristoph Hellwig prev.br_startoff = NULLFILEOFF; 418565c5f419SChristoph Hellwig 418665c5f419SChristoph Hellwig error = xfs_bmap_extsize_align(mp, got, &prev, extsz, rt, eof, 418730f712c9SDave Chinner 1, 0, &aoff, &alen); 418830f712c9SDave Chinner ASSERT(!error); 418930f712c9SDave Chinner } 419030f712c9SDave Chinner 419130f712c9SDave Chinner if (rt) 419230f712c9SDave Chinner extsz = alen / mp->m_sb.sb_rextsize; 419330f712c9SDave Chinner 419430f712c9SDave Chinner /* 419530f712c9SDave Chinner * Make a transaction-less quota reservation for delayed allocation 419630f712c9SDave Chinner * blocks. This number gets adjusted later. We return if we haven't 419730f712c9SDave Chinner * allocated blocks already inside this loop. 419830f712c9SDave Chinner */ 419930f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(NULL, ip, (long)alen, 0, 420030f712c9SDave Chinner rt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 420130f712c9SDave Chinner if (error) 420230f712c9SDave Chinner return error; 420330f712c9SDave Chinner 420430f712c9SDave Chinner /* 420530f712c9SDave Chinner * Split changing sb for alen and indlen since they could be coming 420630f712c9SDave Chinner * from different places. 420730f712c9SDave Chinner */ 420830f712c9SDave Chinner indlen = (xfs_extlen_t)xfs_bmap_worst_indlen(ip, alen); 420930f712c9SDave Chinner ASSERT(indlen > 0); 421030f712c9SDave Chinner 421130f712c9SDave Chinner if (rt) { 4212bab98bbeSDave Chinner error = xfs_mod_frextents(mp, -((int64_t)extsz)); 421330f712c9SDave Chinner } else { 42140d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)alen), false); 421530f712c9SDave Chinner } 421630f712c9SDave Chinner 421730f712c9SDave Chinner if (error) 421830f712c9SDave Chinner goto out_unreserve_quota; 421930f712c9SDave Chinner 42200d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)indlen), false); 422130f712c9SDave Chinner if (error) 422230f712c9SDave Chinner goto out_unreserve_blocks; 422330f712c9SDave Chinner 422430f712c9SDave Chinner 422530f712c9SDave Chinner ip->i_delayed_blks += alen; 422630f712c9SDave Chinner 422730f712c9SDave Chinner got->br_startoff = aoff; 422830f712c9SDave Chinner got->br_startblock = nullstartblock(indlen); 422930f712c9SDave Chinner got->br_blockcount = alen; 423030f712c9SDave Chinner got->br_state = XFS_EXT_NORM; 4231be51f811SDarrick J. Wong xfs_bmap_add_extent_hole_delay(ip, whichfork, lastx, got); 423230f712c9SDave Chinner 423330f712c9SDave Chinner /* 423430f712c9SDave Chinner * Update our extent pointer, given that xfs_bmap_add_extent_hole_delay 423530f712c9SDave Chinner * might have merged it into one of the neighbouring ones. 423630f712c9SDave Chinner */ 423730f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx), got); 423830f712c9SDave Chinner 423930f712c9SDave Chinner ASSERT(got->br_startoff <= aoff); 424030f712c9SDave Chinner ASSERT(got->br_startoff + got->br_blockcount >= aoff + alen); 424130f712c9SDave Chinner ASSERT(isnullstartblock(got->br_startblock)); 424230f712c9SDave Chinner ASSERT(got->br_state == XFS_EXT_NORM); 424330f712c9SDave Chinner return 0; 424430f712c9SDave Chinner 424530f712c9SDave Chinner out_unreserve_blocks: 424630f712c9SDave Chinner if (rt) 4247bab98bbeSDave Chinner xfs_mod_frextents(mp, extsz); 424830f712c9SDave Chinner else 42490d485adaSDave Chinner xfs_mod_fdblocks(mp, alen, false); 425030f712c9SDave Chinner out_unreserve_quota: 425130f712c9SDave Chinner if (XFS_IS_QUOTA_ON(mp)) 425230f712c9SDave Chinner xfs_trans_unreserve_quota_nblks(NULL, ip, (long)alen, 0, rt ? 425330f712c9SDave Chinner XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 425430f712c9SDave Chinner return error; 425530f712c9SDave Chinner } 425630f712c9SDave Chinner 42577f8a058fSDave Chinner static int 42587f8a058fSDave Chinner xfs_bmapi_allocate( 425930f712c9SDave Chinner struct xfs_bmalloca *bma) 426030f712c9SDave Chinner { 426130f712c9SDave Chinner struct xfs_mount *mp = bma->ip->i_mount; 426260b4984fSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(bma->flags); 426330f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 426430f712c9SDave Chinner int tmp_logflags = 0; 426530f712c9SDave Chinner int error; 426630f712c9SDave Chinner 426730f712c9SDave Chinner ASSERT(bma->length > 0); 426830f712c9SDave Chinner 426930f712c9SDave Chinner /* 427030f712c9SDave Chinner * For the wasdelay case, we could also just allocate the stuff asked 427130f712c9SDave Chinner * for in this bmap call but that wouldn't be as good. 427230f712c9SDave Chinner */ 427330f712c9SDave Chinner if (bma->wasdel) { 427430f712c9SDave Chinner bma->length = (xfs_extlen_t)bma->got.br_blockcount; 427530f712c9SDave Chinner bma->offset = bma->got.br_startoff; 42760e8d630bSChristoph Hellwig if (bma->idx) { 427730f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), 427830f712c9SDave Chinner &bma->prev); 427930f712c9SDave Chinner } 428030f712c9SDave Chinner } else { 428130f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN); 428230f712c9SDave Chinner if (!bma->eof) 428330f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, 428430f712c9SDave Chinner bma->got.br_startoff - bma->offset); 428530f712c9SDave Chinner } 428630f712c9SDave Chinner 428730f712c9SDave Chinner /* 4288292378edSDave Chinner * Set the data type being allocated. For the data fork, the first data 4289292378edSDave Chinner * in the file is treated differently to all other allocations. For the 4290292378edSDave Chinner * attribute fork, we only need to ensure the allocated range is not on 4291292378edSDave Chinner * the busy list. 429230f712c9SDave Chinner */ 429330f712c9SDave Chinner if (!(bma->flags & XFS_BMAPI_METADATA)) { 4294292378edSDave Chinner bma->datatype = XFS_ALLOC_NOBUSY; 4295292378edSDave Chinner if (whichfork == XFS_DATA_FORK) { 4296292378edSDave Chinner if (bma->offset == 0) 4297292378edSDave Chinner bma->datatype |= XFS_ALLOC_INITIAL_USER_DATA; 4298292378edSDave Chinner else 4299292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA; 4300292378edSDave Chinner } 43013fbbbea3SDave Chinner if (bma->flags & XFS_BMAPI_ZERO) 4302292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA_ZERO; 430330f712c9SDave Chinner } 430430f712c9SDave Chinner 430530f712c9SDave Chinner bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1; 430630f712c9SDave Chinner 430730f712c9SDave Chinner /* 430830f712c9SDave Chinner * Only want to do the alignment at the eof if it is userdata and 430930f712c9SDave Chinner * allocation length is larger than a stripe unit. 431030f712c9SDave Chinner */ 431130f712c9SDave Chinner if (mp->m_dalign && bma->length >= mp->m_dalign && 431230f712c9SDave Chinner !(bma->flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) { 431330f712c9SDave Chinner error = xfs_bmap_isaeof(bma, whichfork); 431430f712c9SDave Chinner if (error) 431530f712c9SDave Chinner return error; 431630f712c9SDave Chinner } 431730f712c9SDave Chinner 431830f712c9SDave Chinner error = xfs_bmap_alloc(bma); 431930f712c9SDave Chinner if (error) 432030f712c9SDave Chinner return error; 432130f712c9SDave Chinner 43222c3234d1SDarrick J. Wong if (bma->dfops->dop_low) 432330f712c9SDave Chinner bma->minleft = 0; 432430f712c9SDave Chinner if (bma->cur) 432530f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 432630f712c9SDave Chinner if (bma->blkno == NULLFSBLOCK) 432730f712c9SDave Chinner return 0; 432830f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 432930f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork); 433030f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 43312c3234d1SDarrick J. Wong bma->cur->bc_private.b.dfops = bma->dfops; 433230f712c9SDave Chinner } 433330f712c9SDave Chinner /* 433430f712c9SDave Chinner * Bump the number of extents we've allocated 433530f712c9SDave Chinner * in this call. 433630f712c9SDave Chinner */ 433730f712c9SDave Chinner bma->nallocs++; 433830f712c9SDave Chinner 433930f712c9SDave Chinner if (bma->cur) 434030f712c9SDave Chinner bma->cur->bc_private.b.flags = 434130f712c9SDave Chinner bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 434230f712c9SDave Chinner 434330f712c9SDave Chinner bma->got.br_startoff = bma->offset; 434430f712c9SDave Chinner bma->got.br_startblock = bma->blkno; 434530f712c9SDave Chinner bma->got.br_blockcount = bma->length; 434630f712c9SDave Chinner bma->got.br_state = XFS_EXT_NORM; 434730f712c9SDave Chinner 434830f712c9SDave Chinner /* 434930f712c9SDave Chinner * A wasdelay extent has been initialized, so shouldn't be flagged 435030f712c9SDave Chinner * as unwritten. 435130f712c9SDave Chinner */ 435230f712c9SDave Chinner if (!bma->wasdel && (bma->flags & XFS_BMAPI_PREALLOC) && 435330f712c9SDave Chinner xfs_sb_version_hasextflgbit(&mp->m_sb)) 435430f712c9SDave Chinner bma->got.br_state = XFS_EXT_UNWRITTEN; 435530f712c9SDave Chinner 435630f712c9SDave Chinner if (bma->wasdel) 435760b4984fSDarrick J. Wong error = xfs_bmap_add_extent_delay_real(bma, whichfork); 435830f712c9SDave Chinner else 435930f712c9SDave Chinner error = xfs_bmap_add_extent_hole_real(bma, whichfork); 436030f712c9SDave Chinner 436130f712c9SDave Chinner bma->logflags |= tmp_logflags; 436230f712c9SDave Chinner if (error) 436330f712c9SDave Chinner return error; 436430f712c9SDave Chinner 436530f712c9SDave Chinner /* 436630f712c9SDave Chinner * Update our extent pointer, given that xfs_bmap_add_extent_delay_real 436730f712c9SDave Chinner * or xfs_bmap_add_extent_hole_real might have merged it into one of 436830f712c9SDave Chinner * the neighbouring ones. 436930f712c9SDave Chinner */ 437030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got); 437130f712c9SDave Chinner 437230f712c9SDave Chinner ASSERT(bma->got.br_startoff <= bma->offset); 437330f712c9SDave Chinner ASSERT(bma->got.br_startoff + bma->got.br_blockcount >= 437430f712c9SDave Chinner bma->offset + bma->length); 437530f712c9SDave Chinner ASSERT(bma->got.br_state == XFS_EXT_NORM || 437630f712c9SDave Chinner bma->got.br_state == XFS_EXT_UNWRITTEN); 437730f712c9SDave Chinner return 0; 437830f712c9SDave Chinner } 437930f712c9SDave Chinner 438030f712c9SDave Chinner STATIC int 438130f712c9SDave Chinner xfs_bmapi_convert_unwritten( 438230f712c9SDave Chinner struct xfs_bmalloca *bma, 438330f712c9SDave Chinner struct xfs_bmbt_irec *mval, 438430f712c9SDave Chinner xfs_filblks_t len, 438530f712c9SDave Chinner int flags) 438630f712c9SDave Chinner { 43873993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 438830f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 438930f712c9SDave Chinner int tmp_logflags = 0; 439030f712c9SDave Chinner int error; 439130f712c9SDave Chinner 439230f712c9SDave Chinner /* check if we need to do unwritten->real conversion */ 439330f712c9SDave Chinner if (mval->br_state == XFS_EXT_UNWRITTEN && 439430f712c9SDave Chinner (flags & XFS_BMAPI_PREALLOC)) 439530f712c9SDave Chinner return 0; 439630f712c9SDave Chinner 439730f712c9SDave Chinner /* check if we need to do real->unwritten conversion */ 439830f712c9SDave Chinner if (mval->br_state == XFS_EXT_NORM && 439930f712c9SDave Chinner (flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) != 440030f712c9SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) 440130f712c9SDave Chinner return 0; 440230f712c9SDave Chinner 44033993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 44043993baebSDarrick J. Wong 440530f712c9SDave Chinner /* 440630f712c9SDave Chinner * Modify (by adding) the state flag, if writing. 440730f712c9SDave Chinner */ 440830f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 440930f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 441030f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp, 441130f712c9SDave Chinner bma->ip, whichfork); 441230f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 44132c3234d1SDarrick J. Wong bma->cur->bc_private.b.dfops = bma->dfops; 441430f712c9SDave Chinner } 441530f712c9SDave Chinner mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN) 441630f712c9SDave Chinner ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 441730f712c9SDave Chinner 44183fbbbea3SDave Chinner /* 44193fbbbea3SDave Chinner * Before insertion into the bmbt, zero the range being converted 44203fbbbea3SDave Chinner * if required. 44213fbbbea3SDave Chinner */ 44223fbbbea3SDave Chinner if (flags & XFS_BMAPI_ZERO) { 44233fbbbea3SDave Chinner error = xfs_zero_extent(bma->ip, mval->br_startblock, 44243fbbbea3SDave Chinner mval->br_blockcount); 44253fbbbea3SDave Chinner if (error) 44263fbbbea3SDave Chinner return error; 44273fbbbea3SDave Chinner } 44283fbbbea3SDave Chinner 442930f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, &bma->idx, 44302c3234d1SDarrick J. Wong &bma->cur, mval, bma->firstblock, bma->dfops, 443130f712c9SDave Chinner &tmp_logflags); 44322e588a46SBrian Foster /* 44332e588a46SBrian Foster * Log the inode core unconditionally in the unwritten extent conversion 44342e588a46SBrian Foster * path because the conversion might not have done so (e.g., if the 44352e588a46SBrian Foster * extent count hasn't changed). We need to make sure the inode is dirty 44362e588a46SBrian Foster * in the transaction for the sake of fsync(), even if nothing has 44372e588a46SBrian Foster * changed, because fsync() will not force the log for this transaction 44382e588a46SBrian Foster * unless it sees the inode pinned. 44392e588a46SBrian Foster */ 44402e588a46SBrian Foster bma->logflags |= tmp_logflags | XFS_ILOG_CORE; 444130f712c9SDave Chinner if (error) 444230f712c9SDave Chinner return error; 444330f712c9SDave Chinner 444430f712c9SDave Chinner /* 444530f712c9SDave Chinner * Update our extent pointer, given that 444630f712c9SDave Chinner * xfs_bmap_add_extent_unwritten_real might have merged it into one 444730f712c9SDave Chinner * of the neighbouring ones. 444830f712c9SDave Chinner */ 444930f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got); 445030f712c9SDave Chinner 445130f712c9SDave Chinner /* 445230f712c9SDave Chinner * We may have combined previously unwritten space with written space, 445330f712c9SDave Chinner * so generate another request. 445430f712c9SDave Chinner */ 445530f712c9SDave Chinner if (mval->br_blockcount < len) 44562451337dSDave Chinner return -EAGAIN; 445730f712c9SDave Chinner return 0; 445830f712c9SDave Chinner } 445930f712c9SDave Chinner 446030f712c9SDave Chinner /* 446130f712c9SDave Chinner * Map file blocks to filesystem blocks, and allocate blocks or convert the 446230f712c9SDave Chinner * extent state if necessary. Details behaviour is controlled by the flags 446330f712c9SDave Chinner * parameter. Only allocates blocks from a single allocation group, to avoid 446430f712c9SDave Chinner * locking problems. 446530f712c9SDave Chinner * 446630f712c9SDave Chinner * The returned value in "firstblock" from the first call in a transaction 446730f712c9SDave Chinner * must be remembered and presented to subsequent calls in "firstblock". 446830f712c9SDave Chinner * An upper bound for the number of blocks to be allocated is supplied to 446930f712c9SDave Chinner * the first call in "total"; if no allocation group has that many free 447030f712c9SDave Chinner * blocks then the call will fail (return NULLFSBLOCK in "firstblock"). 447130f712c9SDave Chinner */ 447230f712c9SDave Chinner int 447330f712c9SDave Chinner xfs_bmapi_write( 447430f712c9SDave Chinner struct xfs_trans *tp, /* transaction pointer */ 447530f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 447630f712c9SDave Chinner xfs_fileoff_t bno, /* starting file offs. mapped */ 447730f712c9SDave Chinner xfs_filblks_t len, /* length to map in file */ 447830f712c9SDave Chinner int flags, /* XFS_BMAPI_... */ 447930f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first allocated block 448030f712c9SDave Chinner controls a.g. for allocs */ 448130f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed */ 448230f712c9SDave Chinner struct xfs_bmbt_irec *mval, /* output: map values */ 448330f712c9SDave Chinner int *nmap, /* i/o: mval size/count */ 44842c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops) /* i/o: list extents to free */ 448530f712c9SDave Chinner { 448630f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 448730f712c9SDave Chinner struct xfs_ifork *ifp; 448830f712c9SDave Chinner struct xfs_bmalloca bma = { NULL }; /* args for xfs_bmap_alloc */ 448930f712c9SDave Chinner xfs_fileoff_t end; /* end of mapped file region */ 44902d58f6efSChristoph Hellwig bool eof = false; /* after the end of extents */ 449130f712c9SDave Chinner int error; /* error return */ 449230f712c9SDave Chinner int n; /* current extent index */ 449330f712c9SDave Chinner xfs_fileoff_t obno; /* old block number (offset) */ 449430f712c9SDave Chinner int whichfork; /* data or attr fork */ 449530f712c9SDave Chinner char inhole; /* current location is hole in file */ 449630f712c9SDave Chinner char wasdelay; /* old extent was delayed */ 449730f712c9SDave Chinner 449830f712c9SDave Chinner #ifdef DEBUG 449930f712c9SDave Chinner xfs_fileoff_t orig_bno; /* original block number value */ 450030f712c9SDave Chinner int orig_flags; /* original flags arg value */ 450130f712c9SDave Chinner xfs_filblks_t orig_len; /* original value of len arg */ 450230f712c9SDave Chinner struct xfs_bmbt_irec *orig_mval; /* original value of mval */ 450330f712c9SDave Chinner int orig_nmap; /* original value of *nmap */ 450430f712c9SDave Chinner 450530f712c9SDave Chinner orig_bno = bno; 450630f712c9SDave Chinner orig_len = len; 450730f712c9SDave Chinner orig_flags = flags; 450830f712c9SDave Chinner orig_mval = mval; 450930f712c9SDave Chinner orig_nmap = *nmap; 451030f712c9SDave Chinner #endif 451160b4984fSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 451230f712c9SDave Chinner 451330f712c9SDave Chinner ASSERT(*nmap >= 1); 451430f712c9SDave Chinner ASSERT(*nmap <= XFS_BMAP_MAX_NMAP); 451530f712c9SDave Chinner ASSERT(!(flags & XFS_BMAPI_IGSTATE)); 451630f712c9SDave Chinner ASSERT(tp != NULL); 451730f712c9SDave Chinner ASSERT(len > 0); 451830f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL); 451930f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 4520f65306eaSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_REMAP) || whichfork == XFS_DATA_FORK); 4521f65306eaSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_PREALLOC) || !(flags & XFS_BMAPI_REMAP)); 4522f65306eaSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_CONVERT) || !(flags & XFS_BMAPI_REMAP)); 452360b4984fSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_PREALLOC) || whichfork != XFS_COW_FORK); 452460b4984fSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_CONVERT) || whichfork != XFS_COW_FORK); 452530f712c9SDave Chinner 45263fbbbea3SDave Chinner /* zeroing is for currently only for data extents, not metadata */ 45273fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) != 45283fbbbea3SDave Chinner (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)); 45293fbbbea3SDave Chinner /* 45303fbbbea3SDave Chinner * we can allocate unwritten extents or pre-zero allocated blocks, 45313fbbbea3SDave Chinner * but it makes no sense to do both at once. This would result in 45323fbbbea3SDave Chinner * zeroing the unwritten extent twice, but it still being an 45333fbbbea3SDave Chinner * unwritten extent.... 45343fbbbea3SDave Chinner */ 45353fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) != 45363fbbbea3SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)); 45373fbbbea3SDave Chinner 453830f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 453930f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 454030f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 454130f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 454230f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_write", XFS_ERRLEVEL_LOW, mp); 45432451337dSDave Chinner return -EFSCORRUPTED; 454430f712c9SDave Chinner } 454530f712c9SDave Chinner 454630f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 45472451337dSDave Chinner return -EIO; 454830f712c9SDave Chinner 454930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 455030f712c9SDave Chinner 4551ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapw); 455230f712c9SDave Chinner 455330f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 455430f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE) 455530f712c9SDave Chinner bma.minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1; 455630f712c9SDave Chinner else 455730f712c9SDave Chinner bma.minleft = 1; 455830f712c9SDave Chinner } else { 455930f712c9SDave Chinner bma.minleft = 0; 456030f712c9SDave Chinner } 456130f712c9SDave Chinner 456230f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 456330f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 456430f712c9SDave Chinner if (error) 456530f712c9SDave Chinner goto error0; 456630f712c9SDave Chinner } 456730f712c9SDave Chinner 456830f712c9SDave Chinner n = 0; 456930f712c9SDave Chinner end = bno + len; 457030f712c9SDave Chinner obno = bno; 457130f712c9SDave Chinner 45722d58f6efSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &bma.idx, &bma.got)) 45732d58f6efSChristoph Hellwig eof = true; 45742d58f6efSChristoph Hellwig if (!xfs_iext_get_extent(ifp, bma.idx - 1, &bma.prev)) 45752d58f6efSChristoph Hellwig bma.prev.br_startoff = NULLFILEOFF; 457630f712c9SDave Chinner bma.tp = tp; 457730f712c9SDave Chinner bma.ip = ip; 457830f712c9SDave Chinner bma.total = total; 4579292378edSDave Chinner bma.datatype = 0; 45802c3234d1SDarrick J. Wong bma.dfops = dfops; 458130f712c9SDave Chinner bma.firstblock = firstblock; 458230f712c9SDave Chinner 458330f712c9SDave Chinner while (bno < end && n < *nmap) { 458430f712c9SDave Chinner inhole = eof || bma.got.br_startoff > bno; 458530f712c9SDave Chinner wasdelay = !inhole && isnullstartblock(bma.got.br_startblock); 458630f712c9SDave Chinner 458730f712c9SDave Chinner /* 4588f65306eaSDarrick J. Wong * Make sure we only reflink into a hole. 4589f65306eaSDarrick J. Wong */ 4590f65306eaSDarrick J. Wong if (flags & XFS_BMAPI_REMAP) 4591f65306eaSDarrick J. Wong ASSERT(inhole); 459260b4984fSDarrick J. Wong if (flags & XFS_BMAPI_COWFORK) 459360b4984fSDarrick J. Wong ASSERT(!inhole); 4594f65306eaSDarrick J. Wong 4595f65306eaSDarrick J. Wong /* 459630f712c9SDave Chinner * First, deal with the hole before the allocated space 459730f712c9SDave Chinner * that we found, if any. 459830f712c9SDave Chinner */ 459930f712c9SDave Chinner if (inhole || wasdelay) { 460030f712c9SDave Chinner bma.eof = eof; 460130f712c9SDave Chinner bma.conv = !!(flags & XFS_BMAPI_CONVERT); 460230f712c9SDave Chinner bma.wasdel = wasdelay; 460330f712c9SDave Chinner bma.offset = bno; 460430f712c9SDave Chinner bma.flags = flags; 460530f712c9SDave Chinner 460630f712c9SDave Chinner /* 460730f712c9SDave Chinner * There's a 32/64 bit type mismatch between the 460830f712c9SDave Chinner * allocation length request (which can be 64 bits in 460930f712c9SDave Chinner * length) and the bma length request, which is 461030f712c9SDave Chinner * xfs_extlen_t and therefore 32 bits. Hence we have to 461130f712c9SDave Chinner * check for 32-bit overflows and handle them here. 461230f712c9SDave Chinner */ 461330f712c9SDave Chinner if (len > (xfs_filblks_t)MAXEXTLEN) 461430f712c9SDave Chinner bma.length = MAXEXTLEN; 461530f712c9SDave Chinner else 461630f712c9SDave Chinner bma.length = len; 461730f712c9SDave Chinner 461830f712c9SDave Chinner ASSERT(len > 0); 461930f712c9SDave Chinner ASSERT(bma.length > 0); 462030f712c9SDave Chinner error = xfs_bmapi_allocate(&bma); 462130f712c9SDave Chinner if (error) 462230f712c9SDave Chinner goto error0; 462330f712c9SDave Chinner if (bma.blkno == NULLFSBLOCK) 462430f712c9SDave Chinner break; 4625174edb0eSDarrick J. Wong 4626174edb0eSDarrick J. Wong /* 4627174edb0eSDarrick J. Wong * If this is a CoW allocation, record the data in 4628174edb0eSDarrick J. Wong * the refcount btree for orphan recovery. 4629174edb0eSDarrick J. Wong */ 4630174edb0eSDarrick J. Wong if (whichfork == XFS_COW_FORK) { 4631174edb0eSDarrick J. Wong error = xfs_refcount_alloc_cow_extent(mp, dfops, 4632174edb0eSDarrick J. Wong bma.blkno, bma.length); 4633174edb0eSDarrick J. Wong if (error) 4634174edb0eSDarrick J. Wong goto error0; 4635174edb0eSDarrick J. Wong } 463630f712c9SDave Chinner } 463730f712c9SDave Chinner 463830f712c9SDave Chinner /* Deal with the allocated space we found. */ 463930f712c9SDave Chinner xfs_bmapi_trim_map(mval, &bma.got, &bno, len, obno, 464030f712c9SDave Chinner end, n, flags); 464130f712c9SDave Chinner 464230f712c9SDave Chinner /* Execute unwritten extent conversion if necessary */ 464330f712c9SDave Chinner error = xfs_bmapi_convert_unwritten(&bma, mval, len, flags); 46442451337dSDave Chinner if (error == -EAGAIN) 464530f712c9SDave Chinner continue; 464630f712c9SDave Chinner if (error) 464730f712c9SDave Chinner goto error0; 464830f712c9SDave Chinner 464930f712c9SDave Chinner /* update the extent map to return */ 465030f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 465130f712c9SDave Chinner 465230f712c9SDave Chinner /* 465330f712c9SDave Chinner * If we're done, stop now. Stop when we've allocated 465430f712c9SDave Chinner * XFS_BMAP_MAX_NMAP extents no matter what. Otherwise 465530f712c9SDave Chinner * the transaction may get too big. 465630f712c9SDave Chinner */ 465730f712c9SDave Chinner if (bno >= end || n >= *nmap || bma.nallocs >= *nmap) 465830f712c9SDave Chinner break; 465930f712c9SDave Chinner 466030f712c9SDave Chinner /* Else go on to the next record. */ 466130f712c9SDave Chinner bma.prev = bma.got; 46622d58f6efSChristoph Hellwig if (!xfs_iext_get_extent(ifp, ++bma.idx, &bma.got)) 46632d58f6efSChristoph Hellwig eof = true; 466430f712c9SDave Chinner } 466530f712c9SDave Chinner *nmap = n; 466630f712c9SDave Chinner 466730f712c9SDave Chinner /* 466830f712c9SDave Chinner * Transform from btree to extents, give it cur. 466930f712c9SDave Chinner */ 467030f712c9SDave Chinner if (xfs_bmap_wants_extents(ip, whichfork)) { 467130f712c9SDave Chinner int tmp_logflags = 0; 467230f712c9SDave Chinner 467330f712c9SDave Chinner ASSERT(bma.cur); 467430f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, bma.cur, 467530f712c9SDave Chinner &tmp_logflags, whichfork); 467630f712c9SDave Chinner bma.logflags |= tmp_logflags; 467730f712c9SDave Chinner if (error) 467830f712c9SDave Chinner goto error0; 467930f712c9SDave Chinner } 468030f712c9SDave Chinner 468130f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE || 468230f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 468330f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork)); 468430f712c9SDave Chinner error = 0; 468530f712c9SDave Chinner error0: 468630f712c9SDave Chinner /* 468730f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 468830f712c9SDave Chinner * logging the extent records if we've converted to btree format. 468930f712c9SDave Chinner */ 469030f712c9SDave Chinner if ((bma.logflags & xfs_ilog_fext(whichfork)) && 469130f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 469230f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fext(whichfork); 469330f712c9SDave Chinner else if ((bma.logflags & xfs_ilog_fbroot(whichfork)) && 469430f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 469530f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fbroot(whichfork); 469630f712c9SDave Chinner /* 469730f712c9SDave Chinner * Log whatever the flags say, even if error. Otherwise we might miss 469830f712c9SDave Chinner * detecting a case where the data is changed, there's an error, 469930f712c9SDave Chinner * and it's not logged so we don't shutdown when we should. 470030f712c9SDave Chinner */ 470130f712c9SDave Chinner if (bma.logflags) 470230f712c9SDave Chinner xfs_trans_log_inode(tp, ip, bma.logflags); 470330f712c9SDave Chinner 470430f712c9SDave Chinner if (bma.cur) { 470530f712c9SDave Chinner if (!error) { 470630f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 470730f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *firstblock) == 470830f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, 470930f712c9SDave Chinner bma.cur->bc_private.b.firstblock) || 47102c3234d1SDarrick J. Wong (dfops->dop_low && 471130f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *firstblock) < 471230f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, 471330f712c9SDave Chinner bma.cur->bc_private.b.firstblock))); 471430f712c9SDave Chinner *firstblock = bma.cur->bc_private.b.firstblock; 471530f712c9SDave Chinner } 471630f712c9SDave Chinner xfs_btree_del_cursor(bma.cur, 471730f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 471830f712c9SDave Chinner } 471930f712c9SDave Chinner if (!error) 472030f712c9SDave Chinner xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval, 472130f712c9SDave Chinner orig_nmap, *nmap); 472230f712c9SDave Chinner return error; 472330f712c9SDave Chinner } 472430f712c9SDave Chinner 472530f712c9SDave Chinner /* 4726a9bd24acSBrian Foster * When a delalloc extent is split (e.g., due to a hole punch), the original 4727a9bd24acSBrian Foster * indlen reservation must be shared across the two new extents that are left 4728a9bd24acSBrian Foster * behind. 4729a9bd24acSBrian Foster * 4730a9bd24acSBrian Foster * Given the original reservation and the worst case indlen for the two new 4731a9bd24acSBrian Foster * extents (as calculated by xfs_bmap_worst_indlen()), split the original 4732d34999c9SBrian Foster * reservation fairly across the two new extents. If necessary, steal available 4733d34999c9SBrian Foster * blocks from a deleted extent to make up a reservation deficiency (e.g., if 4734d34999c9SBrian Foster * ores == 1). The number of stolen blocks is returned. The availability and 4735d34999c9SBrian Foster * subsequent accounting of stolen blocks is the responsibility of the caller. 4736a9bd24acSBrian Foster */ 4737d34999c9SBrian Foster static xfs_filblks_t 4738a9bd24acSBrian Foster xfs_bmap_split_indlen( 4739a9bd24acSBrian Foster xfs_filblks_t ores, /* original res. */ 4740a9bd24acSBrian Foster xfs_filblks_t *indlen1, /* ext1 worst indlen */ 4741d34999c9SBrian Foster xfs_filblks_t *indlen2, /* ext2 worst indlen */ 4742d34999c9SBrian Foster xfs_filblks_t avail) /* stealable blocks */ 4743a9bd24acSBrian Foster { 4744a9bd24acSBrian Foster xfs_filblks_t len1 = *indlen1; 4745a9bd24acSBrian Foster xfs_filblks_t len2 = *indlen2; 4746a9bd24acSBrian Foster xfs_filblks_t nres = len1 + len2; /* new total res. */ 4747d34999c9SBrian Foster xfs_filblks_t stolen = 0; 4748a9bd24acSBrian Foster 4749a9bd24acSBrian Foster /* 4750d34999c9SBrian Foster * Steal as many blocks as we can to try and satisfy the worst case 4751d34999c9SBrian Foster * indlen for both new extents. 4752d34999c9SBrian Foster */ 4753d34999c9SBrian Foster while (nres > ores && avail) { 4754d34999c9SBrian Foster nres--; 4755d34999c9SBrian Foster avail--; 4756d34999c9SBrian Foster stolen++; 4757d34999c9SBrian Foster } 4758d34999c9SBrian Foster 4759d34999c9SBrian Foster /* 4760d34999c9SBrian Foster * The only blocks available are those reserved for the original 4761d34999c9SBrian Foster * extent and what we can steal from the extent being removed. 4762d34999c9SBrian Foster * If this still isn't enough to satisfy the combined 4763d34999c9SBrian Foster * requirements for the two new extents, skim blocks off of each 4764d34999c9SBrian Foster * of the new reservations until they match what is available. 4765a9bd24acSBrian Foster */ 4766a9bd24acSBrian Foster while (nres > ores) { 4767a9bd24acSBrian Foster if (len1) { 4768a9bd24acSBrian Foster len1--; 4769a9bd24acSBrian Foster nres--; 4770a9bd24acSBrian Foster } 4771a9bd24acSBrian Foster if (nres == ores) 4772a9bd24acSBrian Foster break; 4773a9bd24acSBrian Foster if (len2) { 4774a9bd24acSBrian Foster len2--; 4775a9bd24acSBrian Foster nres--; 4776a9bd24acSBrian Foster } 4777a9bd24acSBrian Foster } 4778a9bd24acSBrian Foster 4779a9bd24acSBrian Foster *indlen1 = len1; 4780a9bd24acSBrian Foster *indlen2 = len2; 4781d34999c9SBrian Foster 4782d34999c9SBrian Foster return stolen; 4783a9bd24acSBrian Foster } 4784a9bd24acSBrian Foster 4785fa5c836cSChristoph Hellwig int 4786fa5c836cSChristoph Hellwig xfs_bmap_del_extent_delay( 4787fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4788fa5c836cSChristoph Hellwig int whichfork, 4789fa5c836cSChristoph Hellwig xfs_extnum_t *idx, 4790fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4791fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4792fa5c836cSChristoph Hellwig { 4793fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4794fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 4795fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4796fa5c836cSChristoph Hellwig int64_t da_old, da_new, da_diff = 0; 4797fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4798fa5c836cSChristoph Hellwig xfs_filblks_t got_indlen, new_indlen, stolen; 4799fa5c836cSChristoph Hellwig int error = 0, state = 0; 4800fa5c836cSChristoph Hellwig bool isrt; 4801fa5c836cSChristoph Hellwig 4802fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4803fa5c836cSChristoph Hellwig 4804fa5c836cSChristoph Hellwig isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 4805fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4806fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4807fa5c836cSChristoph Hellwig da_old = startblockval(got->br_startblock); 4808fa5c836cSChristoph Hellwig da_new = 0; 4809fa5c836cSChristoph Hellwig 4810fa5c836cSChristoph Hellwig ASSERT(*idx >= 0); 48115d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 4812fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4813fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4814fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4815fa5c836cSChristoph Hellwig 4816fa5c836cSChristoph Hellwig if (isrt) { 4817fa5c836cSChristoph Hellwig int64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount); 4818fa5c836cSChristoph Hellwig 4819fa5c836cSChristoph Hellwig do_div(rtexts, mp->m_sb.sb_rextsize); 4820fa5c836cSChristoph Hellwig xfs_mod_frextents(mp, rtexts); 4821fa5c836cSChristoph Hellwig } 4822fa5c836cSChristoph Hellwig 4823fa5c836cSChristoph Hellwig /* 4824fa5c836cSChristoph Hellwig * Update the inode delalloc counter now and wait to update the 4825fa5c836cSChristoph Hellwig * sb counters as we might have to borrow some blocks for the 4826fa5c836cSChristoph Hellwig * indirect block accounting. 4827fa5c836cSChristoph Hellwig */ 4828fa5c836cSChristoph Hellwig xfs_trans_reserve_quota_nblks(NULL, ip, -((long)del->br_blockcount), 0, 4829fa5c836cSChristoph Hellwig isrt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 4830fa5c836cSChristoph Hellwig ip->i_delayed_blks -= del->br_blockcount; 4831fa5c836cSChristoph Hellwig 4832fa5c836cSChristoph Hellwig if (whichfork == XFS_COW_FORK) 4833fa5c836cSChristoph Hellwig state |= BMAP_COWFORK; 4834fa5c836cSChristoph Hellwig 4835fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 4836fa5c836cSChristoph Hellwig state |= BMAP_LEFT_CONTIG; 4837fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 4838fa5c836cSChristoph Hellwig state |= BMAP_RIGHT_CONTIG; 4839fa5c836cSChristoph Hellwig 4840fa5c836cSChristoph Hellwig switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 4841fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 4842fa5c836cSChristoph Hellwig /* 4843fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4844fa5c836cSChristoph Hellwig */ 4845fa5c836cSChristoph Hellwig xfs_iext_remove(ip, *idx, 1, state); 4846fa5c836cSChristoph Hellwig --*idx; 4847fa5c836cSChristoph Hellwig break; 4848fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG: 4849fa5c836cSChristoph Hellwig /* 4850fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4851fa5c836cSChristoph Hellwig */ 4852fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4853fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4854fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4855fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4856fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4857fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4858fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4859fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4860fa5c836cSChristoph Hellwig break; 4861fa5c836cSChristoph Hellwig case BMAP_RIGHT_CONTIG: 4862fa5c836cSChristoph Hellwig /* 4863fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4864fa5c836cSChristoph Hellwig */ 4865fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4866fa5c836cSChristoph Hellwig got->br_blockcount = got->br_blockcount - del->br_blockcount; 4867fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4868fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4869fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4870fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4871fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4872fa5c836cSChristoph Hellwig break; 4873fa5c836cSChristoph Hellwig case 0: 4874fa5c836cSChristoph Hellwig /* 4875fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4876fa5c836cSChristoph Hellwig * 4877fa5c836cSChristoph Hellwig * Distribute the original indlen reservation across the two new 4878fa5c836cSChristoph Hellwig * extents. Steal blocks from the deleted extent if necessary. 4879fa5c836cSChristoph Hellwig * Stealing blocks simply fudges the fdblocks accounting below. 4880fa5c836cSChristoph Hellwig * Warn if either of the new indlen reservations is zero as this 4881fa5c836cSChristoph Hellwig * can lead to delalloc problems. 4882fa5c836cSChristoph Hellwig */ 4883fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4884fa5c836cSChristoph Hellwig 4885fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4886fa5c836cSChristoph Hellwig got_indlen = xfs_bmap_worst_indlen(ip, got->br_blockcount); 4887fa5c836cSChristoph Hellwig 4888fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4889fa5c836cSChristoph Hellwig new_indlen = xfs_bmap_worst_indlen(ip, new.br_blockcount); 4890fa5c836cSChristoph Hellwig 4891fa5c836cSChristoph Hellwig WARN_ON_ONCE(!got_indlen || !new_indlen); 4892fa5c836cSChristoph Hellwig stolen = xfs_bmap_split_indlen(da_old, &got_indlen, &new_indlen, 4893fa5c836cSChristoph Hellwig del->br_blockcount); 4894fa5c836cSChristoph Hellwig 4895fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)got_indlen); 4896fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4897fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, 0, _THIS_IP_); 4898fa5c836cSChristoph Hellwig 4899fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4900fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4901fa5c836cSChristoph Hellwig new.br_startblock = nullstartblock((int)new_indlen); 4902fa5c836cSChristoph Hellwig 4903fa5c836cSChristoph Hellwig ++*idx; 4904fa5c836cSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, &new, state); 4905fa5c836cSChristoph Hellwig 4906fa5c836cSChristoph Hellwig da_new = got_indlen + new_indlen - stolen; 4907fa5c836cSChristoph Hellwig del->br_blockcount -= stolen; 4908fa5c836cSChristoph Hellwig break; 4909fa5c836cSChristoph Hellwig } 4910fa5c836cSChristoph Hellwig 4911fa5c836cSChristoph Hellwig ASSERT(da_old >= da_new); 4912fa5c836cSChristoph Hellwig da_diff = da_old - da_new; 4913fa5c836cSChristoph Hellwig if (!isrt) 4914fa5c836cSChristoph Hellwig da_diff += del->br_blockcount; 4915fa5c836cSChristoph Hellwig if (da_diff) 4916fa5c836cSChristoph Hellwig xfs_mod_fdblocks(mp, da_diff, false); 4917fa5c836cSChristoph Hellwig return error; 4918fa5c836cSChristoph Hellwig } 4919fa5c836cSChristoph Hellwig 4920fa5c836cSChristoph Hellwig void 4921fa5c836cSChristoph Hellwig xfs_bmap_del_extent_cow( 4922fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4923fa5c836cSChristoph Hellwig xfs_extnum_t *idx, 4924fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4925fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4926fa5c836cSChristoph Hellwig { 4927fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4928fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK); 4929fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4930fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4931fa5c836cSChristoph Hellwig int state = BMAP_COWFORK; 4932fa5c836cSChristoph Hellwig 4933fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4934fa5c836cSChristoph Hellwig 4935fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4936fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4937fa5c836cSChristoph Hellwig 4938fa5c836cSChristoph Hellwig ASSERT(*idx >= 0); 49395d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 4940fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4941fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4942fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4943fa5c836cSChristoph Hellwig ASSERT(!isnullstartblock(got->br_startblock)); 4944fa5c836cSChristoph Hellwig 4945fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 4946fa5c836cSChristoph Hellwig state |= BMAP_LEFT_CONTIG; 4947fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 4948fa5c836cSChristoph Hellwig state |= BMAP_RIGHT_CONTIG; 4949fa5c836cSChristoph Hellwig 4950fa5c836cSChristoph Hellwig switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 4951fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 4952fa5c836cSChristoph Hellwig /* 4953fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4954fa5c836cSChristoph Hellwig */ 4955fa5c836cSChristoph Hellwig xfs_iext_remove(ip, *idx, 1, state); 4956fa5c836cSChristoph Hellwig --*idx; 4957fa5c836cSChristoph Hellwig break; 4958fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG: 4959fa5c836cSChristoph Hellwig /* 4960fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4961fa5c836cSChristoph Hellwig */ 4962fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4963fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4964fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4965fa5c836cSChristoph Hellwig got->br_startblock = del->br_startblock + del->br_blockcount; 4966fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4967fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4968fa5c836cSChristoph Hellwig break; 4969fa5c836cSChristoph Hellwig case BMAP_RIGHT_CONTIG: 4970fa5c836cSChristoph Hellwig /* 4971fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4972fa5c836cSChristoph Hellwig */ 4973fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4974fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4975fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4976fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4977fa5c836cSChristoph Hellwig break; 4978fa5c836cSChristoph Hellwig case 0: 4979fa5c836cSChristoph Hellwig /* 4980fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4981fa5c836cSChristoph Hellwig */ 4982fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4983fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4984fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4985fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4986fa5c836cSChristoph Hellwig 4987fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4988fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4989fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4990fa5c836cSChristoph Hellwig new.br_startblock = del->br_startblock + del->br_blockcount; 4991fa5c836cSChristoph Hellwig 4992fa5c836cSChristoph Hellwig ++*idx; 4993fa5c836cSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, &new, state); 4994fa5c836cSChristoph Hellwig break; 4995fa5c836cSChristoph Hellwig } 4996fa5c836cSChristoph Hellwig } 4997fa5c836cSChristoph Hellwig 4998a9bd24acSBrian Foster /* 499930f712c9SDave Chinner * Called by xfs_bmapi to update file extent records and the btree 500030f712c9SDave Chinner * after removing space (or undoing a delayed allocation). 500130f712c9SDave Chinner */ 500230f712c9SDave Chinner STATIC int /* error */ 500330f712c9SDave Chinner xfs_bmap_del_extent( 500430f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 500530f712c9SDave Chinner xfs_trans_t *tp, /* current transaction pointer */ 500630f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/delete */ 50072c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* list of extents to be freed */ 500830f712c9SDave Chinner xfs_btree_cur_t *cur, /* if null, not a btree */ 500930f712c9SDave Chinner xfs_bmbt_irec_t *del, /* data to remove from extents */ 501030f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 50114847acf8SDarrick J. Wong int whichfork, /* data or attr fork */ 50124847acf8SDarrick J. Wong int bflags) /* bmapi flags */ 501330f712c9SDave Chinner { 501430f712c9SDave Chinner xfs_filblks_t da_new; /* new delay-alloc indirect blocks */ 501530f712c9SDave Chinner xfs_filblks_t da_old; /* old delay-alloc indirect blocks */ 501630f712c9SDave Chinner xfs_fsblock_t del_endblock=0; /* first block past del */ 501730f712c9SDave Chinner xfs_fileoff_t del_endoff; /* first offset past del */ 501830f712c9SDave Chinner int delay; /* current block is delayed allocated */ 501930f712c9SDave Chinner int do_fx; /* free extent at end of routine */ 502030f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* current extent entry pointer */ 502130f712c9SDave Chinner int error; /* error return value */ 502230f712c9SDave Chinner int flags; /* inode logging flags */ 502330f712c9SDave Chinner xfs_bmbt_irec_t got; /* current extent entry */ 502430f712c9SDave Chinner xfs_fileoff_t got_endoff; /* first offset past got */ 502530f712c9SDave Chinner int i; /* temp state */ 502630f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 502730f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 502830f712c9SDave Chinner xfs_filblks_t nblks; /* quota/sb block count */ 502930f712c9SDave Chinner xfs_bmbt_irec_t new; /* new record to be inserted */ 503030f712c9SDave Chinner /* REFERENCED */ 503130f712c9SDave Chinner uint qfield; /* quota field to update */ 503230f712c9SDave Chinner xfs_filblks_t temp; /* for indirect length calculations */ 503330f712c9SDave Chinner xfs_filblks_t temp2; /* for indirect length calculations */ 503430f712c9SDave Chinner int state = 0; 503530f712c9SDave Chinner 5036ff6d6af2SBill O'Donnell mp = ip->i_mount; 5037ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_del_exlist); 503830f712c9SDave Chinner 503930f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 504030f712c9SDave Chinner state |= BMAP_ATTRFORK; 50413993baebSDarrick J. Wong else if (whichfork == XFS_COW_FORK) 50423993baebSDarrick J. Wong state |= BMAP_COWFORK; 504330f712c9SDave Chinner 504430f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 50455d829300SEric Sandeen ASSERT((*idx >= 0) && (*idx < xfs_iext_count(ifp))); 504630f712c9SDave Chinner ASSERT(del->br_blockcount > 0); 504730f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, *idx); 504830f712c9SDave Chinner xfs_bmbt_get_all(ep, &got); 504930f712c9SDave Chinner ASSERT(got.br_startoff <= del->br_startoff); 505030f712c9SDave Chinner del_endoff = del->br_startoff + del->br_blockcount; 505130f712c9SDave Chinner got_endoff = got.br_startoff + got.br_blockcount; 505230f712c9SDave Chinner ASSERT(got_endoff >= del_endoff); 505330f712c9SDave Chinner delay = isnullstartblock(got.br_startblock); 505430f712c9SDave Chinner ASSERT(isnullstartblock(del->br_startblock) == delay); 505530f712c9SDave Chinner flags = 0; 505630f712c9SDave Chinner qfield = 0; 505730f712c9SDave Chinner error = 0; 505830f712c9SDave Chinner /* 505930f712c9SDave Chinner * If deleting a real allocation, must free up the disk space. 506030f712c9SDave Chinner */ 506130f712c9SDave Chinner if (!delay) { 506230f712c9SDave Chinner flags = XFS_ILOG_CORE; 506330f712c9SDave Chinner /* 506430f712c9SDave Chinner * Realtime allocation. Free it and record di_nblocks update. 506530f712c9SDave Chinner */ 506630f712c9SDave Chinner if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) { 506730f712c9SDave Chinner xfs_fsblock_t bno; 506830f712c9SDave Chinner xfs_filblks_t len; 506930f712c9SDave Chinner 507030f712c9SDave Chinner ASSERT(do_mod(del->br_blockcount, 507130f712c9SDave Chinner mp->m_sb.sb_rextsize) == 0); 507230f712c9SDave Chinner ASSERT(do_mod(del->br_startblock, 507330f712c9SDave Chinner mp->m_sb.sb_rextsize) == 0); 507430f712c9SDave Chinner bno = del->br_startblock; 507530f712c9SDave Chinner len = del->br_blockcount; 507630f712c9SDave Chinner do_div(bno, mp->m_sb.sb_rextsize); 507730f712c9SDave Chinner do_div(len, mp->m_sb.sb_rextsize); 507830f712c9SDave Chinner error = xfs_rtfree_extent(tp, bno, (xfs_extlen_t)len); 507930f712c9SDave Chinner if (error) 508030f712c9SDave Chinner goto done; 508130f712c9SDave Chinner do_fx = 0; 508230f712c9SDave Chinner nblks = len * mp->m_sb.sb_rextsize; 508330f712c9SDave Chinner qfield = XFS_TRANS_DQ_RTBCOUNT; 508430f712c9SDave Chinner } 508530f712c9SDave Chinner /* 508630f712c9SDave Chinner * Ordinary allocation. 508730f712c9SDave Chinner */ 508830f712c9SDave Chinner else { 508930f712c9SDave Chinner do_fx = 1; 509030f712c9SDave Chinner nblks = del->br_blockcount; 509130f712c9SDave Chinner qfield = XFS_TRANS_DQ_BCOUNT; 509230f712c9SDave Chinner } 509330f712c9SDave Chinner /* 509430f712c9SDave Chinner * Set up del_endblock and cur for later. 509530f712c9SDave Chinner */ 509630f712c9SDave Chinner del_endblock = del->br_startblock + del->br_blockcount; 509730f712c9SDave Chinner if (cur) { 509830f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff, 509930f712c9SDave Chinner got.br_startblock, got.br_blockcount, 510030f712c9SDave Chinner &i))) 510130f712c9SDave Chinner goto done; 5102c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 510330f712c9SDave Chinner } 510430f712c9SDave Chinner da_old = da_new = 0; 510530f712c9SDave Chinner } else { 510630f712c9SDave Chinner da_old = startblockval(got.br_startblock); 510730f712c9SDave Chinner da_new = 0; 510830f712c9SDave Chinner nblks = 0; 510930f712c9SDave Chinner do_fx = 0; 511030f712c9SDave Chinner } 5111340785ccSDarrick J. Wong 511230f712c9SDave Chinner /* 511330f712c9SDave Chinner * Set flag value to use in switch statement. 511430f712c9SDave Chinner * Left-contig is 2, right-contig is 1. 511530f712c9SDave Chinner */ 511630f712c9SDave Chinner switch (((got.br_startoff == del->br_startoff) << 1) | 511730f712c9SDave Chinner (got_endoff == del_endoff)) { 511830f712c9SDave Chinner case 3: 511930f712c9SDave Chinner /* 512030f712c9SDave Chinner * Matches the whole extent. Delete the entry. 512130f712c9SDave Chinner */ 51224862cfe8SDarrick J. Wong trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 512330f712c9SDave Chinner xfs_iext_remove(ip, *idx, 1, 512430f712c9SDave Chinner whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0); 512530f712c9SDave Chinner --*idx; 512630f712c9SDave Chinner if (delay) 512730f712c9SDave Chinner break; 512830f712c9SDave Chinner 512930f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 513030f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 513130f712c9SDave Chinner flags |= XFS_ILOG_CORE; 513230f712c9SDave Chinner if (!cur) { 513330f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 513430f712c9SDave Chinner break; 513530f712c9SDave Chinner } 513630f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 513730f712c9SDave Chinner goto done; 5138c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 513930f712c9SDave Chinner break; 514030f712c9SDave Chinner 514130f712c9SDave Chinner case 2: 514230f712c9SDave Chinner /* 514330f712c9SDave Chinner * Deleting the first part of the extent. 514430f712c9SDave Chinner */ 514530f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 514630f712c9SDave Chinner xfs_bmbt_set_startoff(ep, del_endoff); 514730f712c9SDave Chinner temp = got.br_blockcount - del->br_blockcount; 514830f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 514930f712c9SDave Chinner if (delay) { 515030f712c9SDave Chinner temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 515130f712c9SDave Chinner da_old); 515230f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 515330f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 515430f712c9SDave Chinner da_new = temp; 515530f712c9SDave Chinner break; 515630f712c9SDave Chinner } 515730f712c9SDave Chinner xfs_bmbt_set_startblock(ep, del_endblock); 515830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 515930f712c9SDave Chinner if (!cur) { 516030f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 516130f712c9SDave Chinner break; 516230f712c9SDave Chinner } 516330f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, del_endoff, del_endblock, 516430f712c9SDave Chinner got.br_blockcount - del->br_blockcount, 516530f712c9SDave Chinner got.br_state))) 516630f712c9SDave Chinner goto done; 516730f712c9SDave Chinner break; 516830f712c9SDave Chinner 516930f712c9SDave Chinner case 1: 517030f712c9SDave Chinner /* 517130f712c9SDave Chinner * Deleting the last part of the extent. 517230f712c9SDave Chinner */ 517330f712c9SDave Chinner temp = got.br_blockcount - del->br_blockcount; 517430f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 517530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 517630f712c9SDave Chinner if (delay) { 517730f712c9SDave Chinner temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 517830f712c9SDave Chinner da_old); 517930f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 518030f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 518130f712c9SDave Chinner da_new = temp; 518230f712c9SDave Chinner break; 518330f712c9SDave Chinner } 518430f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 518530f712c9SDave Chinner if (!cur) { 518630f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 518730f712c9SDave Chinner break; 518830f712c9SDave Chinner } 518930f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, got.br_startoff, 519030f712c9SDave Chinner got.br_startblock, 519130f712c9SDave Chinner got.br_blockcount - del->br_blockcount, 519230f712c9SDave Chinner got.br_state))) 519330f712c9SDave Chinner goto done; 519430f712c9SDave Chinner break; 519530f712c9SDave Chinner 519630f712c9SDave Chinner case 0: 519730f712c9SDave Chinner /* 519830f712c9SDave Chinner * Deleting the middle of the extent. 519930f712c9SDave Chinner */ 520030f712c9SDave Chinner temp = del->br_startoff - got.br_startoff; 520130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 520230f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 520330f712c9SDave Chinner new.br_startoff = del_endoff; 520430f712c9SDave Chinner temp2 = got_endoff - del_endoff; 520530f712c9SDave Chinner new.br_blockcount = temp2; 520630f712c9SDave Chinner new.br_state = got.br_state; 520730f712c9SDave Chinner if (!delay) { 520830f712c9SDave Chinner new.br_startblock = del_endblock; 520930f712c9SDave Chinner flags |= XFS_ILOG_CORE; 521030f712c9SDave Chinner if (cur) { 521130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 521230f712c9SDave Chinner got.br_startoff, 521330f712c9SDave Chinner got.br_startblock, temp, 521430f712c9SDave Chinner got.br_state))) 521530f712c9SDave Chinner goto done; 521630f712c9SDave Chinner if ((error = xfs_btree_increment(cur, 0, &i))) 521730f712c9SDave Chinner goto done; 521830f712c9SDave Chinner cur->bc_rec.b = new; 521930f712c9SDave Chinner error = xfs_btree_insert(cur, &i); 52202451337dSDave Chinner if (error && error != -ENOSPC) 522130f712c9SDave Chinner goto done; 522230f712c9SDave Chinner /* 522330f712c9SDave Chinner * If get no-space back from btree insert, 522430f712c9SDave Chinner * it tried a split, and we have a zero 522530f712c9SDave Chinner * block reservation. 522630f712c9SDave Chinner * Fix up our state and return the error. 522730f712c9SDave Chinner */ 52282451337dSDave Chinner if (error == -ENOSPC) { 522930f712c9SDave Chinner /* 523030f712c9SDave Chinner * Reset the cursor, don't trust 523130f712c9SDave Chinner * it after any insert operation. 523230f712c9SDave Chinner */ 523330f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, 523430f712c9SDave Chinner got.br_startoff, 523530f712c9SDave Chinner got.br_startblock, 523630f712c9SDave Chinner temp, &i))) 523730f712c9SDave Chinner goto done; 5238c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 5239c29aad41SEric Sandeen i == 1, done); 524030f712c9SDave Chinner /* 524130f712c9SDave Chinner * Update the btree record back 524230f712c9SDave Chinner * to the original value. 524330f712c9SDave Chinner */ 524430f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 524530f712c9SDave Chinner got.br_startoff, 524630f712c9SDave Chinner got.br_startblock, 524730f712c9SDave Chinner got.br_blockcount, 524830f712c9SDave Chinner got.br_state))) 524930f712c9SDave Chinner goto done; 525030f712c9SDave Chinner /* 525130f712c9SDave Chinner * Reset the extent record back 525230f712c9SDave Chinner * to the original value. 525330f712c9SDave Chinner */ 525430f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 525530f712c9SDave Chinner got.br_blockcount); 525630f712c9SDave Chinner flags = 0; 52572451337dSDave Chinner error = -ENOSPC; 525830f712c9SDave Chinner goto done; 525930f712c9SDave Chinner } 5260c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 526130f712c9SDave Chinner } else 526230f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 526330f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 526430f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 526530f712c9SDave Chinner } else { 5266d34999c9SBrian Foster xfs_filblks_t stolen; 526730f712c9SDave Chinner ASSERT(whichfork == XFS_DATA_FORK); 5268a9bd24acSBrian Foster 5269a9bd24acSBrian Foster /* 5270a9bd24acSBrian Foster * Distribute the original indlen reservation across the 5271d34999c9SBrian Foster * two new extents. Steal blocks from the deleted extent 5272d34999c9SBrian Foster * if necessary. Stealing blocks simply fudges the 5273d34999c9SBrian Foster * fdblocks accounting in xfs_bunmapi(). 5274a9bd24acSBrian Foster */ 5275a9bd24acSBrian Foster temp = xfs_bmap_worst_indlen(ip, got.br_blockcount); 5276a9bd24acSBrian Foster temp2 = xfs_bmap_worst_indlen(ip, new.br_blockcount); 5277d34999c9SBrian Foster stolen = xfs_bmap_split_indlen(da_old, &temp, &temp2, 5278d34999c9SBrian Foster del->br_blockcount); 5279d34999c9SBrian Foster da_new = temp + temp2 - stolen; 5280d34999c9SBrian Foster del->br_blockcount -= stolen; 5281a9bd24acSBrian Foster 5282a9bd24acSBrian Foster /* 5283d34999c9SBrian Foster * Set the reservation for each extent. Warn if either 5284d34999c9SBrian Foster * is zero as this can lead to delalloc problems. 5285a9bd24acSBrian Foster */ 5286d34999c9SBrian Foster WARN_ON_ONCE(!temp || !temp2); 528730f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 528830f712c9SDave Chinner new.br_startblock = nullstartblock((int)temp2); 528930f712c9SDave Chinner } 529030f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 529130f712c9SDave Chinner xfs_iext_insert(ip, *idx + 1, 1, &new, state); 529230f712c9SDave Chinner ++*idx; 529330f712c9SDave Chinner break; 529430f712c9SDave Chinner } 52959c194644SDarrick J. Wong 52969c194644SDarrick J. Wong /* remove reverse mapping */ 52979c194644SDarrick J. Wong if (!delay) { 52989c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, del); 52999c194644SDarrick J. Wong if (error) 53009c194644SDarrick J. Wong goto done; 53019c194644SDarrick J. Wong } 53029c194644SDarrick J. Wong 530330f712c9SDave Chinner /* 530430f712c9SDave Chinner * If we need to, add to list of extents to delete. 530530f712c9SDave Chinner */ 53064847acf8SDarrick J. Wong if (do_fx && !(bflags & XFS_BMAPI_REMAP)) { 530762aab20fSDarrick J. Wong if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) { 530862aab20fSDarrick J. Wong error = xfs_refcount_decrease_extent(mp, dfops, del); 530962aab20fSDarrick J. Wong if (error) 531062aab20fSDarrick J. Wong goto done; 531162aab20fSDarrick J. Wong } else 53122c3234d1SDarrick J. Wong xfs_bmap_add_free(mp, dfops, del->br_startblock, 5313340785ccSDarrick J. Wong del->br_blockcount, NULL); 531462aab20fSDarrick J. Wong } 531562aab20fSDarrick J. Wong 531630f712c9SDave Chinner /* 531730f712c9SDave Chinner * Adjust inode # blocks in the file. 531830f712c9SDave Chinner */ 531930f712c9SDave Chinner if (nblks) 532030f712c9SDave Chinner ip->i_d.di_nblocks -= nblks; 532130f712c9SDave Chinner /* 532230f712c9SDave Chinner * Adjust quota data. 532330f712c9SDave Chinner */ 53244847acf8SDarrick J. Wong if (qfield && !(bflags & XFS_BMAPI_REMAP)) 532530f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks); 532630f712c9SDave Chinner 532730f712c9SDave Chinner /* 532830f712c9SDave Chinner * Account for change in delayed indirect blocks. 532930f712c9SDave Chinner * Nothing to do for disk quota accounting here. 533030f712c9SDave Chinner */ 533130f712c9SDave Chinner ASSERT(da_old >= da_new); 53320d485adaSDave Chinner if (da_old > da_new) 53330d485adaSDave Chinner xfs_mod_fdblocks(mp, (int64_t)(da_old - da_new), false); 533430f712c9SDave Chinner done: 533530f712c9SDave Chinner *logflagsp = flags; 533630f712c9SDave Chinner return error; 533730f712c9SDave Chinner } 533830f712c9SDave Chinner 533930f712c9SDave Chinner /* 534030f712c9SDave Chinner * Unmap (remove) blocks from a file. 534130f712c9SDave Chinner * If nexts is nonzero then the number of extents to remove is limited to 534230f712c9SDave Chinner * that value. If not all extents in the block range can be removed then 534330f712c9SDave Chinner * *done is set. 534430f712c9SDave Chinner */ 534530f712c9SDave Chinner int /* error */ 53464453593bSDarrick J. Wong __xfs_bunmapi( 534730f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 534830f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 534930f712c9SDave Chinner xfs_fileoff_t bno, /* starting offset to unmap */ 53504453593bSDarrick J. Wong xfs_filblks_t *rlen, /* i/o: amount remaining */ 535130f712c9SDave Chinner int flags, /* misc flags */ 535230f712c9SDave Chinner xfs_extnum_t nexts, /* number of extents max */ 535330f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first allocated block 535430f712c9SDave Chinner controls a.g. for allocs */ 53554453593bSDarrick J. Wong struct xfs_defer_ops *dfops) /* i/o: deferred updates */ 535630f712c9SDave Chinner { 535730f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 535830f712c9SDave Chinner xfs_bmbt_irec_t del; /* extent being deleted */ 535930f712c9SDave Chinner int error; /* error return value */ 536030f712c9SDave Chinner xfs_extnum_t extno; /* extent number in list */ 536130f712c9SDave Chinner xfs_bmbt_irec_t got; /* current extent record */ 536230f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 536330f712c9SDave Chinner int isrt; /* freeing in rt area */ 536430f712c9SDave Chinner xfs_extnum_t lastx; /* last extent index used */ 536530f712c9SDave Chinner int logflags; /* transaction logging flags */ 536630f712c9SDave Chinner xfs_extlen_t mod; /* rt extent offset */ 536730f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 536830f712c9SDave Chinner xfs_fileoff_t start; /* first file offset deleted */ 536930f712c9SDave Chinner int tmp_logflags; /* partial logging flags */ 537030f712c9SDave Chinner int wasdel; /* was a delayed alloc extent */ 537130f712c9SDave Chinner int whichfork; /* data or attribute fork */ 537230f712c9SDave Chinner xfs_fsblock_t sum; 53734453593bSDarrick J. Wong xfs_filblks_t len = *rlen; /* length to unmap in file */ 537430f712c9SDave Chinner 537530f712c9SDave Chinner trace_xfs_bunmap(ip, bno, len, flags, _RET_IP_); 537630f712c9SDave Chinner 53773993baebSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 53783993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 537930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 538030f712c9SDave Chinner if (unlikely( 538130f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 538230f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { 538330f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bunmapi", XFS_ERRLEVEL_LOW, 538430f712c9SDave Chinner ip->i_mount); 53852451337dSDave Chinner return -EFSCORRUPTED; 538630f712c9SDave Chinner } 538730f712c9SDave Chinner mp = ip->i_mount; 538830f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 53892451337dSDave Chinner return -EIO; 539030f712c9SDave Chinner 539130f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 539230f712c9SDave Chinner ASSERT(len > 0); 539330f712c9SDave Chinner ASSERT(nexts >= 0); 539430f712c9SDave Chinner 539530f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 539630f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 539730f712c9SDave Chinner return error; 53985d829300SEric Sandeen if (xfs_iext_count(ifp) == 0) { 53994453593bSDarrick J. Wong *rlen = 0; 540030f712c9SDave Chinner return 0; 540130f712c9SDave Chinner } 5402ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_unmap); 540330f712c9SDave Chinner isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 540430f712c9SDave Chinner start = bno; 540530f712c9SDave Chinner bno = start + len - 1; 540630f712c9SDave Chinner 540730f712c9SDave Chinner /* 540830f712c9SDave Chinner * Check to see if the given block number is past the end of the 540930f712c9SDave Chinner * file, back up to the last block if so... 541030f712c9SDave Chinner */ 54117efc7945SChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &lastx, &got)) { 54127efc7945SChristoph Hellwig ASSERT(lastx > 0); 54137efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, --lastx, &got); 541430f712c9SDave Chinner bno = got.br_startoff + got.br_blockcount - 1; 541530f712c9SDave Chinner } 54167efc7945SChristoph Hellwig 541730f712c9SDave Chinner logflags = 0; 541830f712c9SDave Chinner if (ifp->if_flags & XFS_IFBROOT) { 541930f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 542030f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 542130f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 54222c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 542330f712c9SDave Chinner cur->bc_private.b.flags = 0; 542430f712c9SDave Chinner } else 542530f712c9SDave Chinner cur = NULL; 542630f712c9SDave Chinner 542730f712c9SDave Chinner if (isrt) { 542830f712c9SDave Chinner /* 542930f712c9SDave Chinner * Synchronize by locking the bitmap inode. 543030f712c9SDave Chinner */ 5431f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL|XFS_ILOCK_RTBITMAP); 543230f712c9SDave Chinner xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL); 5433f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL|XFS_ILOCK_RTSUM); 5434f4a0660dSDarrick J. Wong xfs_trans_ijoin(tp, mp->m_rsumip, XFS_ILOCK_EXCL); 543530f712c9SDave Chinner } 543630f712c9SDave Chinner 543730f712c9SDave Chinner extno = 0; 543830f712c9SDave Chinner while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 && 543930f712c9SDave Chinner (nexts == 0 || extno < nexts)) { 544030f712c9SDave Chinner /* 544130f712c9SDave Chinner * Is the found extent after a hole in which bno lives? 544230f712c9SDave Chinner * Just back up to the previous extent, if so. 544330f712c9SDave Chinner */ 544430f712c9SDave Chinner if (got.br_startoff > bno) { 544530f712c9SDave Chinner if (--lastx < 0) 544630f712c9SDave Chinner break; 54477efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 544830f712c9SDave Chinner } 544930f712c9SDave Chinner /* 545030f712c9SDave Chinner * Is the last block of this extent before the range 545130f712c9SDave Chinner * we're supposed to delete? If so, we're done. 545230f712c9SDave Chinner */ 545330f712c9SDave Chinner bno = XFS_FILEOFF_MIN(bno, 545430f712c9SDave Chinner got.br_startoff + got.br_blockcount - 1); 545530f712c9SDave Chinner if (bno < start) 545630f712c9SDave Chinner break; 545730f712c9SDave Chinner /* 545830f712c9SDave Chinner * Then deal with the (possibly delayed) allocated space 545930f712c9SDave Chinner * we found. 546030f712c9SDave Chinner */ 546130f712c9SDave Chinner del = got; 546230f712c9SDave Chinner wasdel = isnullstartblock(del.br_startblock); 546330f712c9SDave Chinner if (got.br_startoff < start) { 546430f712c9SDave Chinner del.br_startoff = start; 546530f712c9SDave Chinner del.br_blockcount -= start - got.br_startoff; 546630f712c9SDave Chinner if (!wasdel) 546730f712c9SDave Chinner del.br_startblock += start - got.br_startoff; 546830f712c9SDave Chinner } 546930f712c9SDave Chinner if (del.br_startoff + del.br_blockcount > bno + 1) 547030f712c9SDave Chinner del.br_blockcount = bno + 1 - del.br_startoff; 547130f712c9SDave Chinner sum = del.br_startblock + del.br_blockcount; 547230f712c9SDave Chinner if (isrt && 547330f712c9SDave Chinner (mod = do_mod(sum, mp->m_sb.sb_rextsize))) { 547430f712c9SDave Chinner /* 547530f712c9SDave Chinner * Realtime extent not lined up at the end. 547630f712c9SDave Chinner * The extent could have been split into written 547730f712c9SDave Chinner * and unwritten pieces, or we could just be 547830f712c9SDave Chinner * unmapping part of it. But we can't really 547930f712c9SDave Chinner * get rid of part of a realtime extent. 548030f712c9SDave Chinner */ 548130f712c9SDave Chinner if (del.br_state == XFS_EXT_UNWRITTEN || 548230f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 548330f712c9SDave Chinner /* 548430f712c9SDave Chinner * This piece is unwritten, or we're not 548530f712c9SDave Chinner * using unwritten extents. Skip over it. 548630f712c9SDave Chinner */ 548730f712c9SDave Chinner ASSERT(bno >= mod); 548830f712c9SDave Chinner bno -= mod > del.br_blockcount ? 548930f712c9SDave Chinner del.br_blockcount : mod; 549030f712c9SDave Chinner if (bno < got.br_startoff) { 549130f712c9SDave Chinner if (--lastx >= 0) 549230f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext( 549330f712c9SDave Chinner ifp, lastx), &got); 549430f712c9SDave Chinner } 549530f712c9SDave Chinner continue; 549630f712c9SDave Chinner } 549730f712c9SDave Chinner /* 549830f712c9SDave Chinner * It's written, turn it unwritten. 549930f712c9SDave Chinner * This is better than zeroing it. 550030f712c9SDave Chinner */ 550130f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 5502a7e5d03bSChristoph Hellwig ASSERT(tp->t_blk_res > 0); 550330f712c9SDave Chinner /* 550430f712c9SDave Chinner * If this spans a realtime extent boundary, 550530f712c9SDave Chinner * chop it back to the start of the one we end at. 550630f712c9SDave Chinner */ 550730f712c9SDave Chinner if (del.br_blockcount > mod) { 550830f712c9SDave Chinner del.br_startoff += del.br_blockcount - mod; 550930f712c9SDave Chinner del.br_startblock += del.br_blockcount - mod; 551030f712c9SDave Chinner del.br_blockcount = mod; 551130f712c9SDave Chinner } 551230f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 551330f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, ip, 55142c3234d1SDarrick J. Wong &lastx, &cur, &del, firstblock, dfops, 551530f712c9SDave Chinner &logflags); 551630f712c9SDave Chinner if (error) 551730f712c9SDave Chinner goto error0; 551830f712c9SDave Chinner goto nodelete; 551930f712c9SDave Chinner } 552030f712c9SDave Chinner if (isrt && (mod = do_mod(del.br_startblock, mp->m_sb.sb_rextsize))) { 552130f712c9SDave Chinner /* 552230f712c9SDave Chinner * Realtime extent is lined up at the end but not 552330f712c9SDave Chinner * at the front. We'll get rid of full extents if 552430f712c9SDave Chinner * we can. 552530f712c9SDave Chinner */ 552630f712c9SDave Chinner mod = mp->m_sb.sb_rextsize - mod; 552730f712c9SDave Chinner if (del.br_blockcount > mod) { 552830f712c9SDave Chinner del.br_blockcount -= mod; 552930f712c9SDave Chinner del.br_startoff += mod; 553030f712c9SDave Chinner del.br_startblock += mod; 553130f712c9SDave Chinner } else if ((del.br_startoff == start && 553230f712c9SDave Chinner (del.br_state == XFS_EXT_UNWRITTEN || 5533a7e5d03bSChristoph Hellwig tp->t_blk_res == 0)) || 553430f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 553530f712c9SDave Chinner /* 553630f712c9SDave Chinner * Can't make it unwritten. There isn't 553730f712c9SDave Chinner * a full extent here so just skip it. 553830f712c9SDave Chinner */ 553930f712c9SDave Chinner ASSERT(bno >= del.br_blockcount); 554030f712c9SDave Chinner bno -= del.br_blockcount; 55417efc7945SChristoph Hellwig if (got.br_startoff > bno && --lastx >= 0) 55427efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 554330f712c9SDave Chinner continue; 554430f712c9SDave Chinner } else if (del.br_state == XFS_EXT_UNWRITTEN) { 55457efc7945SChristoph Hellwig struct xfs_bmbt_irec prev; 55467efc7945SChristoph Hellwig 554730f712c9SDave Chinner /* 554830f712c9SDave Chinner * This one is already unwritten. 554930f712c9SDave Chinner * It must have a written left neighbor. 555030f712c9SDave Chinner * Unwrite the killed part of that one and 555130f712c9SDave Chinner * try again. 555230f712c9SDave Chinner */ 555330f712c9SDave Chinner ASSERT(lastx > 0); 55547efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx - 1, &prev); 555530f712c9SDave Chinner ASSERT(prev.br_state == XFS_EXT_NORM); 555630f712c9SDave Chinner ASSERT(!isnullstartblock(prev.br_startblock)); 555730f712c9SDave Chinner ASSERT(del.br_startblock == 555830f712c9SDave Chinner prev.br_startblock + prev.br_blockcount); 555930f712c9SDave Chinner if (prev.br_startoff < start) { 556030f712c9SDave Chinner mod = start - prev.br_startoff; 556130f712c9SDave Chinner prev.br_blockcount -= mod; 556230f712c9SDave Chinner prev.br_startblock += mod; 556330f712c9SDave Chinner prev.br_startoff = start; 556430f712c9SDave Chinner } 556530f712c9SDave Chinner prev.br_state = XFS_EXT_UNWRITTEN; 556630f712c9SDave Chinner lastx--; 556730f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 556830f712c9SDave Chinner ip, &lastx, &cur, &prev, 55692c3234d1SDarrick J. Wong firstblock, dfops, &logflags); 557030f712c9SDave Chinner if (error) 557130f712c9SDave Chinner goto error0; 557230f712c9SDave Chinner goto nodelete; 557330f712c9SDave Chinner } else { 557430f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 557530f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 557630f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 557730f712c9SDave Chinner ip, &lastx, &cur, &del, 55782c3234d1SDarrick J. Wong firstblock, dfops, &logflags); 557930f712c9SDave Chinner if (error) 558030f712c9SDave Chinner goto error0; 558130f712c9SDave Chinner goto nodelete; 558230f712c9SDave Chinner } 558330f712c9SDave Chinner } 558430f712c9SDave Chinner 558530f712c9SDave Chinner /* 558630f712c9SDave Chinner * If it's the case where the directory code is running 558730f712c9SDave Chinner * with no block reservation, and the deleted block is in 558830f712c9SDave Chinner * the middle of its extent, and the resulting insert 558930f712c9SDave Chinner * of an extent would cause transformation to btree format, 559030f712c9SDave Chinner * then reject it. The calling code will then swap 559130f712c9SDave Chinner * blocks around instead. 559230f712c9SDave Chinner * We have to do this now, rather than waiting for the 559330f712c9SDave Chinner * conversion to btree format, since the transaction 559430f712c9SDave Chinner * will be dirty. 559530f712c9SDave Chinner */ 5596a7e5d03bSChristoph Hellwig if (!wasdel && tp->t_blk_res == 0 && 559730f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 559830f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) >= /* Note the >= */ 559930f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork) && 560030f712c9SDave Chinner del.br_startoff > got.br_startoff && 560130f712c9SDave Chinner del.br_startoff + del.br_blockcount < 560230f712c9SDave Chinner got.br_startoff + got.br_blockcount) { 56032451337dSDave Chinner error = -ENOSPC; 560430f712c9SDave Chinner goto error0; 560530f712c9SDave Chinner } 5606b2706a05SBrian Foster 5607b2706a05SBrian Foster /* 5608b2706a05SBrian Foster * Unreserve quota and update realtime free space, if 5609b2706a05SBrian Foster * appropriate. If delayed allocation, update the inode delalloc 5610b2706a05SBrian Foster * counter now and wait to update the sb counters as 5611b2706a05SBrian Foster * xfs_bmap_del_extent() might need to borrow some blocks. 5612b2706a05SBrian Foster */ 5613b2706a05SBrian Foster if (wasdel) { 5614b2706a05SBrian Foster ASSERT(startblockval(del.br_startblock) > 0); 5615b2706a05SBrian Foster if (isrt) { 5616b2706a05SBrian Foster xfs_filblks_t rtexts; 5617b2706a05SBrian Foster 5618b2706a05SBrian Foster rtexts = XFS_FSB_TO_B(mp, del.br_blockcount); 5619b2706a05SBrian Foster do_div(rtexts, mp->m_sb.sb_rextsize); 5620b2706a05SBrian Foster xfs_mod_frextents(mp, (int64_t)rtexts); 5621b2706a05SBrian Foster (void)xfs_trans_reserve_quota_nblks(NULL, 5622b2706a05SBrian Foster ip, -((long)del.br_blockcount), 0, 5623b2706a05SBrian Foster XFS_QMOPT_RES_RTBLKS); 5624b2706a05SBrian Foster } else { 5625b2706a05SBrian Foster (void)xfs_trans_reserve_quota_nblks(NULL, 5626b2706a05SBrian Foster ip, -((long)del.br_blockcount), 0, 5627b2706a05SBrian Foster XFS_QMOPT_RES_REGBLKS); 5628b2706a05SBrian Foster } 5629b2706a05SBrian Foster ip->i_delayed_blks -= del.br_blockcount; 5630b2706a05SBrian Foster if (cur) 5631b2706a05SBrian Foster cur->bc_private.b.flags |= 5632b2706a05SBrian Foster XFS_BTCUR_BPRV_WASDEL; 5633b2706a05SBrian Foster } else if (cur) 5634b2706a05SBrian Foster cur->bc_private.b.flags &= ~XFS_BTCUR_BPRV_WASDEL; 5635b2706a05SBrian Foster 56362c3234d1SDarrick J. Wong error = xfs_bmap_del_extent(ip, tp, &lastx, dfops, cur, &del, 56374847acf8SDarrick J. Wong &tmp_logflags, whichfork, flags); 563830f712c9SDave Chinner logflags |= tmp_logflags; 563930f712c9SDave Chinner if (error) 564030f712c9SDave Chinner goto error0; 5641b2706a05SBrian Foster 5642b2706a05SBrian Foster if (!isrt && wasdel) 5643b2706a05SBrian Foster xfs_mod_fdblocks(mp, (int64_t)del.br_blockcount, false); 5644b2706a05SBrian Foster 564530f712c9SDave Chinner bno = del.br_startoff - 1; 564630f712c9SDave Chinner nodelete: 564730f712c9SDave Chinner /* 564830f712c9SDave Chinner * If not done go on to the next (previous) record. 564930f712c9SDave Chinner */ 565030f712c9SDave Chinner if (bno != (xfs_fileoff_t)-1 && bno >= start) { 565130f712c9SDave Chinner if (lastx >= 0) { 56527efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 56537efc7945SChristoph Hellwig if (got.br_startoff > bno && --lastx >= 0) 56547efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 565530f712c9SDave Chinner } 565630f712c9SDave Chinner extno++; 565730f712c9SDave Chinner } 565830f712c9SDave Chinner } 56594453593bSDarrick J. Wong if (bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0) 56604453593bSDarrick J. Wong *rlen = 0; 56614453593bSDarrick J. Wong else 56624453593bSDarrick J. Wong *rlen = bno - start + 1; 566330f712c9SDave Chinner 566430f712c9SDave Chinner /* 566530f712c9SDave Chinner * Convert to a btree if necessary. 566630f712c9SDave Chinner */ 566730f712c9SDave Chinner if (xfs_bmap_needs_btree(ip, whichfork)) { 566830f712c9SDave Chinner ASSERT(cur == NULL); 56692c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstblock, dfops, 567030f712c9SDave Chinner &cur, 0, &tmp_logflags, whichfork); 567130f712c9SDave Chinner logflags |= tmp_logflags; 567230f712c9SDave Chinner if (error) 567330f712c9SDave Chinner goto error0; 567430f712c9SDave Chinner } 567530f712c9SDave Chinner /* 567630f712c9SDave Chinner * transform from btree to extents, give it cur 567730f712c9SDave Chinner */ 567830f712c9SDave Chinner else if (xfs_bmap_wants_extents(ip, whichfork)) { 567930f712c9SDave Chinner ASSERT(cur != NULL); 568030f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags, 568130f712c9SDave Chinner whichfork); 568230f712c9SDave Chinner logflags |= tmp_logflags; 568330f712c9SDave Chinner if (error) 568430f712c9SDave Chinner goto error0; 568530f712c9SDave Chinner } 568630f712c9SDave Chinner /* 568730f712c9SDave Chinner * transform from extents to local? 568830f712c9SDave Chinner */ 568930f712c9SDave Chinner error = 0; 569030f712c9SDave Chinner error0: 569130f712c9SDave Chinner /* 569230f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 569330f712c9SDave Chinner * logging the extent records if we've converted to btree format. 569430f712c9SDave Chinner */ 569530f712c9SDave Chinner if ((logflags & xfs_ilog_fext(whichfork)) && 569630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 569730f712c9SDave Chinner logflags &= ~xfs_ilog_fext(whichfork); 569830f712c9SDave Chinner else if ((logflags & xfs_ilog_fbroot(whichfork)) && 569930f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 570030f712c9SDave Chinner logflags &= ~xfs_ilog_fbroot(whichfork); 570130f712c9SDave Chinner /* 570230f712c9SDave Chinner * Log inode even in the error case, if the transaction 570330f712c9SDave Chinner * is dirty we'll need to shut down the filesystem. 570430f712c9SDave Chinner */ 570530f712c9SDave Chinner if (logflags) 570630f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 570730f712c9SDave Chinner if (cur) { 570830f712c9SDave Chinner if (!error) { 570930f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock; 571030f712c9SDave Chinner cur->bc_private.b.allocated = 0; 571130f712c9SDave Chinner } 571230f712c9SDave Chinner xfs_btree_del_cursor(cur, 571330f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 571430f712c9SDave Chinner } 571530f712c9SDave Chinner return error; 571630f712c9SDave Chinner } 571730f712c9SDave Chinner 57184453593bSDarrick J. Wong /* Unmap a range of a file. */ 57194453593bSDarrick J. Wong int 57204453593bSDarrick J. Wong xfs_bunmapi( 57214453593bSDarrick J. Wong xfs_trans_t *tp, 57224453593bSDarrick J. Wong struct xfs_inode *ip, 57234453593bSDarrick J. Wong xfs_fileoff_t bno, 57244453593bSDarrick J. Wong xfs_filblks_t len, 57254453593bSDarrick J. Wong int flags, 57264453593bSDarrick J. Wong xfs_extnum_t nexts, 57274453593bSDarrick J. Wong xfs_fsblock_t *firstblock, 57284453593bSDarrick J. Wong struct xfs_defer_ops *dfops, 57294453593bSDarrick J. Wong int *done) 57304453593bSDarrick J. Wong { 57314453593bSDarrick J. Wong int error; 57324453593bSDarrick J. Wong 57334453593bSDarrick J. Wong error = __xfs_bunmapi(tp, ip, bno, &len, flags, nexts, firstblock, 57344453593bSDarrick J. Wong dfops); 57354453593bSDarrick J. Wong *done = (len == 0); 57364453593bSDarrick J. Wong return error; 57374453593bSDarrick J. Wong } 57384453593bSDarrick J. Wong 573930f712c9SDave Chinner /* 5740ddb19e31SBrian Foster * Determine whether an extent shift can be accomplished by a merge with the 5741ddb19e31SBrian Foster * extent that precedes the target hole of the shift. 5742ddb19e31SBrian Foster */ 5743ddb19e31SBrian Foster STATIC bool 5744ddb19e31SBrian Foster xfs_bmse_can_merge( 5745ddb19e31SBrian Foster struct xfs_bmbt_irec *left, /* preceding extent */ 5746ddb19e31SBrian Foster struct xfs_bmbt_irec *got, /* current extent to shift */ 5747ddb19e31SBrian Foster xfs_fileoff_t shift) /* shift fsb */ 5748ddb19e31SBrian Foster { 5749ddb19e31SBrian Foster xfs_fileoff_t startoff; 5750ddb19e31SBrian Foster 5751ddb19e31SBrian Foster startoff = got->br_startoff - shift; 5752ddb19e31SBrian Foster 5753ddb19e31SBrian Foster /* 5754ddb19e31SBrian Foster * The extent, once shifted, must be adjacent in-file and on-disk with 5755ddb19e31SBrian Foster * the preceding extent. 5756ddb19e31SBrian Foster */ 5757ddb19e31SBrian Foster if ((left->br_startoff + left->br_blockcount != startoff) || 5758ddb19e31SBrian Foster (left->br_startblock + left->br_blockcount != got->br_startblock) || 5759ddb19e31SBrian Foster (left->br_state != got->br_state) || 5760ddb19e31SBrian Foster (left->br_blockcount + got->br_blockcount > MAXEXTLEN)) 5761ddb19e31SBrian Foster return false; 5762ddb19e31SBrian Foster 5763ddb19e31SBrian Foster return true; 5764ddb19e31SBrian Foster } 5765ddb19e31SBrian Foster 5766ddb19e31SBrian Foster /* 5767ddb19e31SBrian Foster * A bmap extent shift adjusts the file offset of an extent to fill a preceding 5768ddb19e31SBrian Foster * hole in the file. If an extent shift would result in the extent being fully 5769ddb19e31SBrian Foster * adjacent to the extent that currently precedes the hole, we can merge with 5770ddb19e31SBrian Foster * the preceding extent rather than do the shift. 5771ddb19e31SBrian Foster * 5772ddb19e31SBrian Foster * This function assumes the caller has verified a shift-by-merge is possible 5773ddb19e31SBrian Foster * with the provided extents via xfs_bmse_can_merge(). 5774ddb19e31SBrian Foster */ 5775ddb19e31SBrian Foster STATIC int 5776ddb19e31SBrian Foster xfs_bmse_merge( 5777ddb19e31SBrian Foster struct xfs_inode *ip, 5778ddb19e31SBrian Foster int whichfork, 5779ddb19e31SBrian Foster xfs_fileoff_t shift, /* shift fsb */ 5780ddb19e31SBrian Foster int current_ext, /* idx of gotp */ 5781ddb19e31SBrian Foster struct xfs_bmbt_rec_host *gotp, /* extent to shift */ 5782ddb19e31SBrian Foster struct xfs_bmbt_rec_host *leftp, /* preceding extent */ 5783ddb19e31SBrian Foster struct xfs_btree_cur *cur, 5784ddb19e31SBrian Foster int *logflags) /* output */ 5785ddb19e31SBrian Foster { 5786ddb19e31SBrian Foster struct xfs_bmbt_irec got; 5787ddb19e31SBrian Foster struct xfs_bmbt_irec left; 5788ddb19e31SBrian Foster xfs_filblks_t blockcount; 5789ddb19e31SBrian Foster int error, i; 57905fb5aeeeSEric Sandeen struct xfs_mount *mp = ip->i_mount; 5791ddb19e31SBrian Foster 5792ddb19e31SBrian Foster xfs_bmbt_get_all(gotp, &got); 5793ddb19e31SBrian Foster xfs_bmbt_get_all(leftp, &left); 5794ddb19e31SBrian Foster blockcount = left.br_blockcount + got.br_blockcount; 5795ddb19e31SBrian Foster 5796ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 5797ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 5798ddb19e31SBrian Foster ASSERT(xfs_bmse_can_merge(&left, &got, shift)); 5799ddb19e31SBrian Foster 5800ddb19e31SBrian Foster /* 5801ddb19e31SBrian Foster * Merge the in-core extents. Note that the host record pointers and 5802ddb19e31SBrian Foster * current_ext index are invalid once the extent has been removed via 5803ddb19e31SBrian Foster * xfs_iext_remove(). 5804ddb19e31SBrian Foster */ 5805ddb19e31SBrian Foster xfs_bmbt_set_blockcount(leftp, blockcount); 5806ddb19e31SBrian Foster xfs_iext_remove(ip, current_ext, 1, 0); 5807ddb19e31SBrian Foster 5808ddb19e31SBrian Foster /* 5809ddb19e31SBrian Foster * Update the on-disk extent count, the btree if necessary and log the 5810ddb19e31SBrian Foster * inode. 5811ddb19e31SBrian Foster */ 5812ddb19e31SBrian Foster XFS_IFORK_NEXT_SET(ip, whichfork, 5813ddb19e31SBrian Foster XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 5814ddb19e31SBrian Foster *logflags |= XFS_ILOG_CORE; 5815ddb19e31SBrian Foster if (!cur) { 5816ddb19e31SBrian Foster *logflags |= XFS_ILOG_DEXT; 5817ddb19e31SBrian Foster return 0; 5818ddb19e31SBrian Foster } 5819ddb19e31SBrian Foster 5820ddb19e31SBrian Foster /* lookup and remove the extent to merge */ 5821ddb19e31SBrian Foster error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, 5822ddb19e31SBrian Foster got.br_blockcount, &i); 5823ddb19e31SBrian Foster if (error) 58244db431f5SDave Chinner return error; 58255fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5826ddb19e31SBrian Foster 5827ddb19e31SBrian Foster error = xfs_btree_delete(cur, &i); 5828ddb19e31SBrian Foster if (error) 58294db431f5SDave Chinner return error; 58305fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5831ddb19e31SBrian Foster 5832ddb19e31SBrian Foster /* lookup and update size of the previous extent */ 5833ddb19e31SBrian Foster error = xfs_bmbt_lookup_eq(cur, left.br_startoff, left.br_startblock, 5834ddb19e31SBrian Foster left.br_blockcount, &i); 5835ddb19e31SBrian Foster if (error) 58364db431f5SDave Chinner return error; 58375fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5838ddb19e31SBrian Foster 5839ddb19e31SBrian Foster left.br_blockcount = blockcount; 5840ddb19e31SBrian Foster 58414db431f5SDave Chinner return xfs_bmbt_update(cur, left.br_startoff, left.br_startblock, 5842ddb19e31SBrian Foster left.br_blockcount, left.br_state); 5843ddb19e31SBrian Foster } 5844ddb19e31SBrian Foster 5845ddb19e31SBrian Foster /* 5846a979bdfeSBrian Foster * Shift a single extent. 5847a979bdfeSBrian Foster */ 5848a979bdfeSBrian Foster STATIC int 5849a979bdfeSBrian Foster xfs_bmse_shift_one( 5850a979bdfeSBrian Foster struct xfs_inode *ip, 5851a979bdfeSBrian Foster int whichfork, 5852a979bdfeSBrian Foster xfs_fileoff_t offset_shift_fsb, 5853a979bdfeSBrian Foster int *current_ext, 5854a979bdfeSBrian Foster struct xfs_bmbt_rec_host *gotp, 5855a979bdfeSBrian Foster struct xfs_btree_cur *cur, 5856a904b1caSNamjae Jeon int *logflags, 58579c194644SDarrick J. Wong enum shift_direction direction, 58589c194644SDarrick J. Wong struct xfs_defer_ops *dfops) 5859a979bdfeSBrian Foster { 5860a979bdfeSBrian Foster struct xfs_ifork *ifp; 58615fb5aeeeSEric Sandeen struct xfs_mount *mp; 5862a979bdfeSBrian Foster xfs_fileoff_t startoff; 5863a904b1caSNamjae Jeon struct xfs_bmbt_rec_host *adj_irecp; 5864a979bdfeSBrian Foster struct xfs_bmbt_irec got; 5865a904b1caSNamjae Jeon struct xfs_bmbt_irec adj_irec; 5866a979bdfeSBrian Foster int error; 5867a979bdfeSBrian Foster int i; 5868a904b1caSNamjae Jeon int total_extents; 5869a979bdfeSBrian Foster 58705fb5aeeeSEric Sandeen mp = ip->i_mount; 5871a979bdfeSBrian Foster ifp = XFS_IFORK_PTR(ip, whichfork); 58725d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 5873a979bdfeSBrian Foster 5874a979bdfeSBrian Foster xfs_bmbt_get_all(gotp, &got); 5875a979bdfeSBrian Foster 5876f71721d0SBrian Foster /* delalloc extents should be prevented by caller */ 58775fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got.br_startblock)); 5878f71721d0SBrian Foster 5879a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) { 5880a904b1caSNamjae Jeon startoff = got.br_startoff - offset_shift_fsb; 5881a979bdfeSBrian Foster 5882a904b1caSNamjae Jeon /* 5883a904b1caSNamjae Jeon * Check for merge if we've got an extent to the left, 5884a904b1caSNamjae Jeon * otherwise make sure there's enough room at the start 5885a904b1caSNamjae Jeon * of the file for the shift. 5886a904b1caSNamjae Jeon */ 5887a904b1caSNamjae Jeon if (!*current_ext) { 5888a904b1caSNamjae Jeon if (got.br_startoff < offset_shift_fsb) 5889a904b1caSNamjae Jeon return -EINVAL; 5890a904b1caSNamjae Jeon goto update_current_ext; 5891a904b1caSNamjae Jeon } 5892a904b1caSNamjae Jeon /* 5893a904b1caSNamjae Jeon * grab the left extent and check for a large 5894a904b1caSNamjae Jeon * enough hole. 5895a904b1caSNamjae Jeon */ 5896a904b1caSNamjae Jeon adj_irecp = xfs_iext_get_ext(ifp, *current_ext - 1); 5897a904b1caSNamjae Jeon xfs_bmbt_get_all(adj_irecp, &adj_irec); 5898a904b1caSNamjae Jeon 5899a904b1caSNamjae Jeon if (startoff < 5900a904b1caSNamjae Jeon adj_irec.br_startoff + adj_irec.br_blockcount) 5901a979bdfeSBrian Foster return -EINVAL; 5902a979bdfeSBrian Foster 5903a979bdfeSBrian Foster /* check whether to merge the extent or shift it down */ 5904a904b1caSNamjae Jeon if (xfs_bmse_can_merge(&adj_irec, &got, 5905a904b1caSNamjae Jeon offset_shift_fsb)) { 59069c194644SDarrick J. Wong error = xfs_bmse_merge(ip, whichfork, offset_shift_fsb, 5907a904b1caSNamjae Jeon *current_ext, gotp, adj_irecp, 5908a904b1caSNamjae Jeon cur, logflags); 59099c194644SDarrick J. Wong if (error) 59109c194644SDarrick J. Wong return error; 59119c194644SDarrick J. Wong adj_irec = got; 59129c194644SDarrick J. Wong goto update_rmap; 5913b11bd671SDave Chinner } 5914a904b1caSNamjae Jeon } else { 5915a904b1caSNamjae Jeon startoff = got.br_startoff + offset_shift_fsb; 5916a904b1caSNamjae Jeon /* nothing to move if this is the last extent */ 5917a904b1caSNamjae Jeon if (*current_ext >= (total_extents - 1)) 5918a904b1caSNamjae Jeon goto update_current_ext; 5919a904b1caSNamjae Jeon /* 5920a904b1caSNamjae Jeon * If this is not the last extent in the file, make sure there 5921a904b1caSNamjae Jeon * is enough room between current extent and next extent for 5922a904b1caSNamjae Jeon * accommodating the shift. 5923a904b1caSNamjae Jeon */ 5924a904b1caSNamjae Jeon adj_irecp = xfs_iext_get_ext(ifp, *current_ext + 1); 5925a904b1caSNamjae Jeon xfs_bmbt_get_all(adj_irecp, &adj_irec); 5926a904b1caSNamjae Jeon if (startoff + got.br_blockcount > adj_irec.br_startoff) 5927b11bd671SDave Chinner return -EINVAL; 5928a904b1caSNamjae Jeon /* 5929a904b1caSNamjae Jeon * Unlike a left shift (which involves a hole punch), 5930a904b1caSNamjae Jeon * a right shift does not modify extent neighbors 5931a904b1caSNamjae Jeon * in any way. We should never find mergeable extents 5932a904b1caSNamjae Jeon * in this scenario. Check anyways and warn if we 5933a904b1caSNamjae Jeon * encounter two extents that could be one. 5934a904b1caSNamjae Jeon */ 5935a904b1caSNamjae Jeon if (xfs_bmse_can_merge(&got, &adj_irec, offset_shift_fsb)) 5936a904b1caSNamjae Jeon WARN_ON_ONCE(1); 5937a904b1caSNamjae Jeon } 5938a979bdfeSBrian Foster /* 5939a979bdfeSBrian Foster * Increment the extent index for the next iteration, update the start 5940a979bdfeSBrian Foster * offset of the in-core extent and update the btree if applicable. 5941a979bdfeSBrian Foster */ 5942a904b1caSNamjae Jeon update_current_ext: 5943a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) 5944a979bdfeSBrian Foster (*current_ext)++; 5945a904b1caSNamjae Jeon else 5946a904b1caSNamjae Jeon (*current_ext)--; 5947a979bdfeSBrian Foster xfs_bmbt_set_startoff(gotp, startoff); 5948a979bdfeSBrian Foster *logflags |= XFS_ILOG_CORE; 59499c194644SDarrick J. Wong adj_irec = got; 5950a979bdfeSBrian Foster if (!cur) { 5951a979bdfeSBrian Foster *logflags |= XFS_ILOG_DEXT; 59529c194644SDarrick J. Wong goto update_rmap; 5953a979bdfeSBrian Foster } 5954a979bdfeSBrian Foster 5955a979bdfeSBrian Foster error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, 5956a979bdfeSBrian Foster got.br_blockcount, &i); 5957a979bdfeSBrian Foster if (error) 5958a979bdfeSBrian Foster return error; 59595fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5960a979bdfeSBrian Foster 5961a979bdfeSBrian Foster got.br_startoff = startoff; 59629c194644SDarrick J. Wong error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, 5963a979bdfeSBrian Foster got.br_blockcount, got.br_state); 59649c194644SDarrick J. Wong if (error) 59659c194644SDarrick J. Wong return error; 59669c194644SDarrick J. Wong 59679c194644SDarrick J. Wong update_rmap: 59689c194644SDarrick J. Wong /* update reverse mapping */ 59699c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &adj_irec); 59709c194644SDarrick J. Wong if (error) 59719c194644SDarrick J. Wong return error; 59729c194644SDarrick J. Wong adj_irec.br_startoff = startoff; 59739c194644SDarrick J. Wong return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &adj_irec); 5974a979bdfeSBrian Foster } 5975a979bdfeSBrian Foster 5976a979bdfeSBrian Foster /* 5977a904b1caSNamjae Jeon * Shift extent records to the left/right to cover/create a hole. 597830f712c9SDave Chinner * 59792c845f5aSBrian Foster * The maximum number of extents to be shifted in a single operation is 5980a904b1caSNamjae Jeon * @num_exts. @stop_fsb specifies the file offset at which to stop shift and the 59812c845f5aSBrian Foster * file offset where we've left off is returned in @next_fsb. @offset_shift_fsb 59822c845f5aSBrian Foster * is the length by which each extent is shifted. If there is no hole to shift 59832c845f5aSBrian Foster * the extents into, this will be considered invalid operation and we abort 59842c845f5aSBrian Foster * immediately. 598530f712c9SDave Chinner */ 598630f712c9SDave Chinner int 598730f712c9SDave Chinner xfs_bmap_shift_extents( 598830f712c9SDave Chinner struct xfs_trans *tp, 598930f712c9SDave Chinner struct xfs_inode *ip, 5990a904b1caSNamjae Jeon xfs_fileoff_t *next_fsb, 599130f712c9SDave Chinner xfs_fileoff_t offset_shift_fsb, 59922c845f5aSBrian Foster int *done, 5993a904b1caSNamjae Jeon xfs_fileoff_t stop_fsb, 599430f712c9SDave Chinner xfs_fsblock_t *firstblock, 59952c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, 5996a904b1caSNamjae Jeon enum shift_direction direction, 599730f712c9SDave Chinner int num_exts) 599830f712c9SDave Chinner { 5999ca446d88SBrian Foster struct xfs_btree_cur *cur = NULL; 600030f712c9SDave Chinner struct xfs_bmbt_rec_host *gotp; 600130f712c9SDave Chinner struct xfs_bmbt_irec got; 600230f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 600330f712c9SDave Chinner struct xfs_ifork *ifp; 600430f712c9SDave Chinner xfs_extnum_t nexts = 0; 60052c845f5aSBrian Foster xfs_extnum_t current_ext; 6006a904b1caSNamjae Jeon xfs_extnum_t total_extents; 6007a904b1caSNamjae Jeon xfs_extnum_t stop_extent; 600830f712c9SDave Chinner int error = 0; 600930f712c9SDave Chinner int whichfork = XFS_DATA_FORK; 6010ca446d88SBrian Foster int logflags = 0; 601130f712c9SDave Chinner 601230f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 601330f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 601430f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 601530f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 601630f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmap_shift_extents", 601730f712c9SDave Chinner XFS_ERRLEVEL_LOW, mp); 60182451337dSDave Chinner return -EFSCORRUPTED; 601930f712c9SDave Chinner } 602030f712c9SDave Chinner 602130f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 60222451337dSDave Chinner return -EIO; 602330f712c9SDave Chinner 60242c845f5aSBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 60252c845f5aSBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 6026a904b1caSNamjae Jeon ASSERT(direction == SHIFT_LEFT || direction == SHIFT_RIGHT); 6027a904b1caSNamjae Jeon ASSERT(*next_fsb != NULLFSBLOCK || direction == SHIFT_RIGHT); 602830f712c9SDave Chinner 602930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 603030f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 603130f712c9SDave Chinner /* Read in all the extents */ 603230f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 603330f712c9SDave Chinner if (error) 603430f712c9SDave Chinner return error; 603530f712c9SDave Chinner } 603630f712c9SDave Chinner 6037ddb19e31SBrian Foster if (ifp->if_flags & XFS_IFBROOT) { 6038ddb19e31SBrian Foster cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 6039ddb19e31SBrian Foster cur->bc_private.b.firstblock = *firstblock; 60402c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 6041ddb19e31SBrian Foster cur->bc_private.b.flags = 0; 6042ddb19e31SBrian Foster } 6043ddb19e31SBrian Foster 604430f712c9SDave Chinner /* 604530f712c9SDave Chinner * There may be delalloc extents in the data fork before the range we 60462c845f5aSBrian Foster * are collapsing out, so we cannot use the count of real extents here. 60472c845f5aSBrian Foster * Instead we have to calculate it from the incore fork. 604830f712c9SDave Chinner */ 60495d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 6050a904b1caSNamjae Jeon if (total_extents == 0) { 6051a904b1caSNamjae Jeon *done = 1; 6052a904b1caSNamjae Jeon goto del_cursor; 6053a904b1caSNamjae Jeon } 6054a904b1caSNamjae Jeon 6055a904b1caSNamjae Jeon /* 6056a904b1caSNamjae Jeon * In case of first right shift, we need to initialize next_fsb 6057a904b1caSNamjae Jeon */ 6058a904b1caSNamjae Jeon if (*next_fsb == NULLFSBLOCK) { 6059a904b1caSNamjae Jeon gotp = xfs_iext_get_ext(ifp, total_extents - 1); 6060a904b1caSNamjae Jeon xfs_bmbt_get_all(gotp, &got); 6061a904b1caSNamjae Jeon *next_fsb = got.br_startoff; 6062a904b1caSNamjae Jeon if (stop_fsb > *next_fsb) { 6063a904b1caSNamjae Jeon *done = 1; 6064a904b1caSNamjae Jeon goto del_cursor; 6065a904b1caSNamjae Jeon } 6066a904b1caSNamjae Jeon } 6067a904b1caSNamjae Jeon 6068a904b1caSNamjae Jeon /* Lookup the extent index at which we have to stop */ 6069a904b1caSNamjae Jeon if (direction == SHIFT_RIGHT) { 6070a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, stop_fsb, &stop_extent); 6071a904b1caSNamjae Jeon /* Make stop_extent exclusive of shift range */ 6072a904b1caSNamjae Jeon stop_extent--; 6073a904b1caSNamjae Jeon } else 6074a904b1caSNamjae Jeon stop_extent = total_extents; 6075a904b1caSNamjae Jeon 6076a904b1caSNamjae Jeon /* 6077a904b1caSNamjae Jeon * Look up the extent index for the fsb where we start shifting. We can 6078a904b1caSNamjae Jeon * henceforth iterate with current_ext as extent list changes are locked 6079a904b1caSNamjae Jeon * out via ilock. 6080a904b1caSNamjae Jeon * 6081a904b1caSNamjae Jeon * gotp can be null in 2 cases: 1) if there are no extents or 2) 6082a904b1caSNamjae Jeon * *next_fsb lies in a hole beyond which there are no extents. Either 6083a904b1caSNamjae Jeon * way, we are done. 6084a904b1caSNamjae Jeon */ 6085a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, *next_fsb, ¤t_ext); 6086a904b1caSNamjae Jeon if (!gotp) { 6087a904b1caSNamjae Jeon *done = 1; 6088a904b1caSNamjae Jeon goto del_cursor; 6089a904b1caSNamjae Jeon } 6090a904b1caSNamjae Jeon 6091a904b1caSNamjae Jeon /* some sanity checking before we finally start shifting extents */ 6092a904b1caSNamjae Jeon if ((direction == SHIFT_LEFT && current_ext >= stop_extent) || 6093a904b1caSNamjae Jeon (direction == SHIFT_RIGHT && current_ext <= stop_extent)) { 6094a904b1caSNamjae Jeon error = -EIO; 6095a904b1caSNamjae Jeon goto del_cursor; 6096a904b1caSNamjae Jeon } 6097a904b1caSNamjae Jeon 6098a904b1caSNamjae Jeon while (nexts++ < num_exts) { 6099a979bdfeSBrian Foster error = xfs_bmse_shift_one(ip, whichfork, offset_shift_fsb, 6100a904b1caSNamjae Jeon ¤t_ext, gotp, cur, &logflags, 61019c194644SDarrick J. Wong direction, dfops); 6102ddb19e31SBrian Foster if (error) 6103ddb19e31SBrian Foster goto del_cursor; 6104a904b1caSNamjae Jeon /* 6105a904b1caSNamjae Jeon * If there was an extent merge during the shift, the extent 6106a904b1caSNamjae Jeon * count can change. Update the total and grade the next record. 6107a904b1caSNamjae Jeon */ 6108a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) { 61095d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 6110a904b1caSNamjae Jeon stop_extent = total_extents; 6111a904b1caSNamjae Jeon } 6112a904b1caSNamjae Jeon 6113a904b1caSNamjae Jeon if (current_ext == stop_extent) { 6114a904b1caSNamjae Jeon *done = 1; 6115a904b1caSNamjae Jeon *next_fsb = NULLFSBLOCK; 6116ddb19e31SBrian Foster break; 6117a904b1caSNamjae Jeon } 6118ddb19e31SBrian Foster gotp = xfs_iext_get_ext(ifp, current_ext); 611930f712c9SDave Chinner } 612030f712c9SDave Chinner 6121a904b1caSNamjae Jeon if (!*done) { 6122a979bdfeSBrian Foster xfs_bmbt_get_all(gotp, &got); 61232c845f5aSBrian Foster *next_fsb = got.br_startoff; 6124a979bdfeSBrian Foster } 612530f712c9SDave Chinner 612630f712c9SDave Chinner del_cursor: 612730f712c9SDave Chinner if (cur) 612830f712c9SDave Chinner xfs_btree_del_cursor(cur, 612930f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 613030f712c9SDave Chinner 6131ca446d88SBrian Foster if (logflags) 613230f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 61332c845f5aSBrian Foster 613430f712c9SDave Chinner return error; 613530f712c9SDave Chinner } 6136a904b1caSNamjae Jeon 6137a904b1caSNamjae Jeon /* 6138a904b1caSNamjae Jeon * Splits an extent into two extents at split_fsb block such that it is 6139a904b1caSNamjae Jeon * the first block of the current_ext. @current_ext is a target extent 6140a904b1caSNamjae Jeon * to be split. @split_fsb is a block where the extents is split. 6141a904b1caSNamjae Jeon * If split_fsb lies in a hole or the first block of extents, just return 0. 6142a904b1caSNamjae Jeon */ 6143a904b1caSNamjae Jeon STATIC int 6144a904b1caSNamjae Jeon xfs_bmap_split_extent_at( 6145a904b1caSNamjae Jeon struct xfs_trans *tp, 6146a904b1caSNamjae Jeon struct xfs_inode *ip, 6147a904b1caSNamjae Jeon xfs_fileoff_t split_fsb, 6148a904b1caSNamjae Jeon xfs_fsblock_t *firstfsb, 61492c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops) 6150a904b1caSNamjae Jeon { 6151a904b1caSNamjae Jeon int whichfork = XFS_DATA_FORK; 6152a904b1caSNamjae Jeon struct xfs_btree_cur *cur = NULL; 6153a904b1caSNamjae Jeon struct xfs_bmbt_rec_host *gotp; 6154a904b1caSNamjae Jeon struct xfs_bmbt_irec got; 6155a904b1caSNamjae Jeon struct xfs_bmbt_irec new; /* split extent */ 6156a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6157a904b1caSNamjae Jeon struct xfs_ifork *ifp; 6158a904b1caSNamjae Jeon xfs_fsblock_t gotblkcnt; /* new block count for got */ 6159a904b1caSNamjae Jeon xfs_extnum_t current_ext; 6160a904b1caSNamjae Jeon int error = 0; 6161a904b1caSNamjae Jeon int logflags = 0; 6162a904b1caSNamjae Jeon int i = 0; 6163a904b1caSNamjae Jeon 6164a904b1caSNamjae Jeon if (unlikely(XFS_TEST_ERROR( 6165a904b1caSNamjae Jeon (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 6166a904b1caSNamjae Jeon XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 6167a904b1caSNamjae Jeon mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 6168a904b1caSNamjae Jeon XFS_ERROR_REPORT("xfs_bmap_split_extent_at", 6169a904b1caSNamjae Jeon XFS_ERRLEVEL_LOW, mp); 6170a904b1caSNamjae Jeon return -EFSCORRUPTED; 6171a904b1caSNamjae Jeon } 6172a904b1caSNamjae Jeon 6173a904b1caSNamjae Jeon if (XFS_FORCED_SHUTDOWN(mp)) 6174a904b1caSNamjae Jeon return -EIO; 6175a904b1caSNamjae Jeon 6176a904b1caSNamjae Jeon ifp = XFS_IFORK_PTR(ip, whichfork); 6177a904b1caSNamjae Jeon if (!(ifp->if_flags & XFS_IFEXTENTS)) { 6178a904b1caSNamjae Jeon /* Read in all the extents */ 6179a904b1caSNamjae Jeon error = xfs_iread_extents(tp, ip, whichfork); 6180a904b1caSNamjae Jeon if (error) 6181a904b1caSNamjae Jeon return error; 6182a904b1caSNamjae Jeon } 6183a904b1caSNamjae Jeon 6184a904b1caSNamjae Jeon /* 6185a904b1caSNamjae Jeon * gotp can be null in 2 cases: 1) if there are no extents 6186a904b1caSNamjae Jeon * or 2) split_fsb lies in a hole beyond which there are 6187a904b1caSNamjae Jeon * no extents. Either way, we are done. 6188a904b1caSNamjae Jeon */ 6189a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, split_fsb, ¤t_ext); 6190a904b1caSNamjae Jeon if (!gotp) 6191a904b1caSNamjae Jeon return 0; 6192a904b1caSNamjae Jeon 6193a904b1caSNamjae Jeon xfs_bmbt_get_all(gotp, &got); 6194a904b1caSNamjae Jeon 6195a904b1caSNamjae Jeon /* 6196a904b1caSNamjae Jeon * Check split_fsb lies in a hole or the start boundary offset 6197a904b1caSNamjae Jeon * of the extent. 6198a904b1caSNamjae Jeon */ 6199a904b1caSNamjae Jeon if (got.br_startoff >= split_fsb) 6200a904b1caSNamjae Jeon return 0; 6201a904b1caSNamjae Jeon 6202a904b1caSNamjae Jeon gotblkcnt = split_fsb - got.br_startoff; 6203a904b1caSNamjae Jeon new.br_startoff = split_fsb; 6204a904b1caSNamjae Jeon new.br_startblock = got.br_startblock + gotblkcnt; 6205a904b1caSNamjae Jeon new.br_blockcount = got.br_blockcount - gotblkcnt; 6206a904b1caSNamjae Jeon new.br_state = got.br_state; 6207a904b1caSNamjae Jeon 6208a904b1caSNamjae Jeon if (ifp->if_flags & XFS_IFBROOT) { 6209a904b1caSNamjae Jeon cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 6210a904b1caSNamjae Jeon cur->bc_private.b.firstblock = *firstfsb; 62112c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 6212a904b1caSNamjae Jeon cur->bc_private.b.flags = 0; 6213a904b1caSNamjae Jeon error = xfs_bmbt_lookup_eq(cur, got.br_startoff, 6214a904b1caSNamjae Jeon got.br_startblock, 6215a904b1caSNamjae Jeon got.br_blockcount, 6216a904b1caSNamjae Jeon &i); 6217a904b1caSNamjae Jeon if (error) 6218a904b1caSNamjae Jeon goto del_cursor; 6219a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 6220a904b1caSNamjae Jeon } 6221a904b1caSNamjae Jeon 6222a904b1caSNamjae Jeon xfs_bmbt_set_blockcount(gotp, gotblkcnt); 6223a904b1caSNamjae Jeon got.br_blockcount = gotblkcnt; 6224a904b1caSNamjae Jeon 6225a904b1caSNamjae Jeon logflags = XFS_ILOG_CORE; 6226a904b1caSNamjae Jeon if (cur) { 6227a904b1caSNamjae Jeon error = xfs_bmbt_update(cur, got.br_startoff, 6228a904b1caSNamjae Jeon got.br_startblock, 6229a904b1caSNamjae Jeon got.br_blockcount, 6230a904b1caSNamjae Jeon got.br_state); 6231a904b1caSNamjae Jeon if (error) 6232a904b1caSNamjae Jeon goto del_cursor; 6233a904b1caSNamjae Jeon } else 6234a904b1caSNamjae Jeon logflags |= XFS_ILOG_DEXT; 6235a904b1caSNamjae Jeon 6236a904b1caSNamjae Jeon /* Add new extent */ 6237a904b1caSNamjae Jeon current_ext++; 6238a904b1caSNamjae Jeon xfs_iext_insert(ip, current_ext, 1, &new, 0); 6239a904b1caSNamjae Jeon XFS_IFORK_NEXT_SET(ip, whichfork, 6240a904b1caSNamjae Jeon XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 6241a904b1caSNamjae Jeon 6242a904b1caSNamjae Jeon if (cur) { 6243a904b1caSNamjae Jeon error = xfs_bmbt_lookup_eq(cur, new.br_startoff, 6244a904b1caSNamjae Jeon new.br_startblock, new.br_blockcount, 6245a904b1caSNamjae Jeon &i); 6246a904b1caSNamjae Jeon if (error) 6247a904b1caSNamjae Jeon goto del_cursor; 6248a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 0, del_cursor); 6249a904b1caSNamjae Jeon cur->bc_rec.b.br_state = new.br_state; 6250a904b1caSNamjae Jeon 6251a904b1caSNamjae Jeon error = xfs_btree_insert(cur, &i); 6252a904b1caSNamjae Jeon if (error) 6253a904b1caSNamjae Jeon goto del_cursor; 6254a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 6255a904b1caSNamjae Jeon } 6256a904b1caSNamjae Jeon 6257a904b1caSNamjae Jeon /* 6258a904b1caSNamjae Jeon * Convert to a btree if necessary. 6259a904b1caSNamjae Jeon */ 6260a904b1caSNamjae Jeon if (xfs_bmap_needs_btree(ip, whichfork)) { 6261a904b1caSNamjae Jeon int tmp_logflags; /* partial log flag return val */ 6262a904b1caSNamjae Jeon 6263a904b1caSNamjae Jeon ASSERT(cur == NULL); 62642c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstfsb, dfops, 6265a904b1caSNamjae Jeon &cur, 0, &tmp_logflags, whichfork); 6266a904b1caSNamjae Jeon logflags |= tmp_logflags; 6267a904b1caSNamjae Jeon } 6268a904b1caSNamjae Jeon 6269a904b1caSNamjae Jeon del_cursor: 6270a904b1caSNamjae Jeon if (cur) { 6271a904b1caSNamjae Jeon cur->bc_private.b.allocated = 0; 6272a904b1caSNamjae Jeon xfs_btree_del_cursor(cur, 6273a904b1caSNamjae Jeon error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 6274a904b1caSNamjae Jeon } 6275a904b1caSNamjae Jeon 6276a904b1caSNamjae Jeon if (logflags) 6277a904b1caSNamjae Jeon xfs_trans_log_inode(tp, ip, logflags); 6278a904b1caSNamjae Jeon return error; 6279a904b1caSNamjae Jeon } 6280a904b1caSNamjae Jeon 6281a904b1caSNamjae Jeon int 6282a904b1caSNamjae Jeon xfs_bmap_split_extent( 6283a904b1caSNamjae Jeon struct xfs_inode *ip, 6284a904b1caSNamjae Jeon xfs_fileoff_t split_fsb) 6285a904b1caSNamjae Jeon { 6286a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6287a904b1caSNamjae Jeon struct xfs_trans *tp; 62882c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; 6289a904b1caSNamjae Jeon xfs_fsblock_t firstfsb; 6290a904b1caSNamjae Jeon int error; 6291a904b1caSNamjae Jeon 6292253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 6293253f4911SChristoph Hellwig XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp); 6294253f4911SChristoph Hellwig if (error) 6295a904b1caSNamjae Jeon return error; 6296a904b1caSNamjae Jeon 6297a904b1caSNamjae Jeon xfs_ilock(ip, XFS_ILOCK_EXCL); 6298a904b1caSNamjae Jeon xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); 6299a904b1caSNamjae Jeon 63002c3234d1SDarrick J. Wong xfs_defer_init(&dfops, &firstfsb); 6301a904b1caSNamjae Jeon 6302a904b1caSNamjae Jeon error = xfs_bmap_split_extent_at(tp, ip, split_fsb, 63032c3234d1SDarrick J. Wong &firstfsb, &dfops); 6304a904b1caSNamjae Jeon if (error) 6305a904b1caSNamjae Jeon goto out; 6306a904b1caSNamjae Jeon 63072c3234d1SDarrick J. Wong error = xfs_defer_finish(&tp, &dfops, NULL); 6308a904b1caSNamjae Jeon if (error) 6309a904b1caSNamjae Jeon goto out; 6310a904b1caSNamjae Jeon 631170393313SChristoph Hellwig return xfs_trans_commit(tp); 6312a904b1caSNamjae Jeon 6313a904b1caSNamjae Jeon out: 63142c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 63154906e215SChristoph Hellwig xfs_trans_cancel(tp); 6316a904b1caSNamjae Jeon return error; 6317a904b1caSNamjae Jeon } 63189f3afb57SDarrick J. Wong 63199f3afb57SDarrick J. Wong /* Deferred mapping is only for real extents in the data fork. */ 63209f3afb57SDarrick J. Wong static bool 63219f3afb57SDarrick J. Wong xfs_bmap_is_update_needed( 63229f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 63239f3afb57SDarrick J. Wong { 63249f3afb57SDarrick J. Wong return bmap->br_startblock != HOLESTARTBLOCK && 63259f3afb57SDarrick J. Wong bmap->br_startblock != DELAYSTARTBLOCK; 63269f3afb57SDarrick J. Wong } 63279f3afb57SDarrick J. Wong 63289f3afb57SDarrick J. Wong /* Record a bmap intent. */ 63299f3afb57SDarrick J. Wong static int 63309f3afb57SDarrick J. Wong __xfs_bmap_add( 63319f3afb57SDarrick J. Wong struct xfs_mount *mp, 63329f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63339f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 63349f3afb57SDarrick J. Wong struct xfs_inode *ip, 63359f3afb57SDarrick J. Wong int whichfork, 63369f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 63379f3afb57SDarrick J. Wong { 63389f3afb57SDarrick J. Wong int error; 63399f3afb57SDarrick J. Wong struct xfs_bmap_intent *bi; 63409f3afb57SDarrick J. Wong 63419f3afb57SDarrick J. Wong trace_xfs_bmap_defer(mp, 63429f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(mp, bmap->br_startblock), 63439f3afb57SDarrick J. Wong type, 63449f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bmap->br_startblock), 63459f3afb57SDarrick J. Wong ip->i_ino, whichfork, 63469f3afb57SDarrick J. Wong bmap->br_startoff, 63479f3afb57SDarrick J. Wong bmap->br_blockcount, 63489f3afb57SDarrick J. Wong bmap->br_state); 63499f3afb57SDarrick J. Wong 63509f3afb57SDarrick J. Wong bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_SLEEP | KM_NOFS); 63519f3afb57SDarrick J. Wong INIT_LIST_HEAD(&bi->bi_list); 63529f3afb57SDarrick J. Wong bi->bi_type = type; 63539f3afb57SDarrick J. Wong bi->bi_owner = ip; 63549f3afb57SDarrick J. Wong bi->bi_whichfork = whichfork; 63559f3afb57SDarrick J. Wong bi->bi_bmap = *bmap; 63569f3afb57SDarrick J. Wong 63579f3afb57SDarrick J. Wong error = xfs_defer_join(dfops, bi->bi_owner); 63589f3afb57SDarrick J. Wong if (error) { 63599f3afb57SDarrick J. Wong kmem_free(bi); 63609f3afb57SDarrick J. Wong return error; 63619f3afb57SDarrick J. Wong } 63629f3afb57SDarrick J. Wong 63639f3afb57SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_BMAP, &bi->bi_list); 63649f3afb57SDarrick J. Wong return 0; 63659f3afb57SDarrick J. Wong } 63669f3afb57SDarrick J. Wong 63679f3afb57SDarrick J. Wong /* Map an extent into a file. */ 63689f3afb57SDarrick J. Wong int 63699f3afb57SDarrick J. Wong xfs_bmap_map_extent( 63709f3afb57SDarrick J. Wong struct xfs_mount *mp, 63719f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63729f3afb57SDarrick J. Wong struct xfs_inode *ip, 63739f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 63749f3afb57SDarrick J. Wong { 63759f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 63769f3afb57SDarrick J. Wong return 0; 63779f3afb57SDarrick J. Wong 63789f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_MAP, ip, 63799f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 63809f3afb57SDarrick J. Wong } 63819f3afb57SDarrick J. Wong 63829f3afb57SDarrick J. Wong /* Unmap an extent out of a file. */ 63839f3afb57SDarrick J. Wong int 63849f3afb57SDarrick J. Wong xfs_bmap_unmap_extent( 63859f3afb57SDarrick J. Wong struct xfs_mount *mp, 63869f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63879f3afb57SDarrick J. Wong struct xfs_inode *ip, 63889f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 63899f3afb57SDarrick J. Wong { 63909f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 63919f3afb57SDarrick J. Wong return 0; 63929f3afb57SDarrick J. Wong 63939f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_UNMAP, ip, 63949f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 63959f3afb57SDarrick J. Wong } 63969f3afb57SDarrick J. Wong 63979f3afb57SDarrick J. Wong /* 63989f3afb57SDarrick J. Wong * Process one of the deferred bmap operations. We pass back the 63999f3afb57SDarrick J. Wong * btree cursor to maintain our lock on the bmapbt between calls. 64009f3afb57SDarrick J. Wong */ 64019f3afb57SDarrick J. Wong int 64029f3afb57SDarrick J. Wong xfs_bmap_finish_one( 64039f3afb57SDarrick J. Wong struct xfs_trans *tp, 64049f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 64059f3afb57SDarrick J. Wong struct xfs_inode *ip, 64069f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 64079f3afb57SDarrick J. Wong int whichfork, 64089f3afb57SDarrick J. Wong xfs_fileoff_t startoff, 64099f3afb57SDarrick J. Wong xfs_fsblock_t startblock, 64109f3afb57SDarrick J. Wong xfs_filblks_t blockcount, 64119f3afb57SDarrick J. Wong xfs_exntst_t state) 64129f3afb57SDarrick J. Wong { 64139f3afb57SDarrick J. Wong struct xfs_bmbt_irec bmap; 64149f3afb57SDarrick J. Wong int nimaps = 1; 64159f3afb57SDarrick J. Wong xfs_fsblock_t firstfsb; 64169f3afb57SDarrick J. Wong int flags = XFS_BMAPI_REMAP; 64179f3afb57SDarrick J. Wong int done; 64189f3afb57SDarrick J. Wong int error = 0; 64199f3afb57SDarrick J. Wong 64209f3afb57SDarrick J. Wong bmap.br_startblock = startblock; 64219f3afb57SDarrick J. Wong bmap.br_startoff = startoff; 64229f3afb57SDarrick J. Wong bmap.br_blockcount = blockcount; 64239f3afb57SDarrick J. Wong bmap.br_state = state; 64249f3afb57SDarrick J. Wong 64259f3afb57SDarrick J. Wong trace_xfs_bmap_deferred(tp->t_mountp, 64269f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(tp->t_mountp, startblock), type, 64279f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), 64289f3afb57SDarrick J. Wong ip->i_ino, whichfork, startoff, blockcount, state); 64299f3afb57SDarrick J. Wong 64309f3afb57SDarrick J. Wong if (whichfork != XFS_DATA_FORK && whichfork != XFS_ATTR_FORK) 64319f3afb57SDarrick J. Wong return -EFSCORRUPTED; 64329f3afb57SDarrick J. Wong if (whichfork == XFS_ATTR_FORK) 64339f3afb57SDarrick J. Wong flags |= XFS_BMAPI_ATTRFORK; 64349f3afb57SDarrick J. Wong 64359f3afb57SDarrick J. Wong if (XFS_TEST_ERROR(false, tp->t_mountp, 64369f3afb57SDarrick J. Wong XFS_ERRTAG_BMAP_FINISH_ONE, 64379f3afb57SDarrick J. Wong XFS_RANDOM_BMAP_FINISH_ONE)) 64389f3afb57SDarrick J. Wong return -EIO; 64399f3afb57SDarrick J. Wong 64409f3afb57SDarrick J. Wong switch (type) { 64419f3afb57SDarrick J. Wong case XFS_BMAP_MAP: 64429f3afb57SDarrick J. Wong firstfsb = bmap.br_startblock; 64439f3afb57SDarrick J. Wong error = xfs_bmapi_write(tp, ip, bmap.br_startoff, 64449f3afb57SDarrick J. Wong bmap.br_blockcount, flags, &firstfsb, 64459f3afb57SDarrick J. Wong bmap.br_blockcount, &bmap, &nimaps, 64469f3afb57SDarrick J. Wong dfops); 64479f3afb57SDarrick J. Wong break; 64489f3afb57SDarrick J. Wong case XFS_BMAP_UNMAP: 64499f3afb57SDarrick J. Wong error = xfs_bunmapi(tp, ip, bmap.br_startoff, 64509f3afb57SDarrick J. Wong bmap.br_blockcount, flags, 1, &firstfsb, 64519f3afb57SDarrick J. Wong dfops, &done); 64529f3afb57SDarrick J. Wong ASSERT(done); 64539f3afb57SDarrick J. Wong break; 64549f3afb57SDarrick J. Wong default: 64559f3afb57SDarrick J. Wong ASSERT(0); 64569f3afb57SDarrick J. Wong error = -EFSCORRUPTED; 64579f3afb57SDarrick J. Wong } 64589f3afb57SDarrick J. Wong 64599f3afb57SDarrick J. Wong return error; 64609f3afb57SDarrick J. Wong } 6461