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" 5230f712c9SDave Chinner 5330f712c9SDave Chinner 5430f712c9SDave Chinner kmem_zone_t *xfs_bmap_free_item_zone; 5530f712c9SDave Chinner 5630f712c9SDave Chinner /* 5730f712c9SDave Chinner * Miscellaneous helper functions 5830f712c9SDave Chinner */ 5930f712c9SDave Chinner 6030f712c9SDave Chinner /* 6130f712c9SDave Chinner * Compute and fill in the value of the maximum depth of a bmap btree 6230f712c9SDave Chinner * in this filesystem. Done once, during mount. 6330f712c9SDave Chinner */ 6430f712c9SDave Chinner void 6530f712c9SDave Chinner xfs_bmap_compute_maxlevels( 6630f712c9SDave Chinner xfs_mount_t *mp, /* file system mount structure */ 6730f712c9SDave Chinner int whichfork) /* data or attr fork */ 6830f712c9SDave Chinner { 6930f712c9SDave Chinner int level; /* btree level */ 7030f712c9SDave Chinner uint maxblocks; /* max blocks at this level */ 7130f712c9SDave Chinner uint maxleafents; /* max leaf entries possible */ 7230f712c9SDave Chinner int maxrootrecs; /* max records in root block */ 7330f712c9SDave Chinner int minleafrecs; /* min records in leaf block */ 7430f712c9SDave Chinner int minnoderecs; /* min records in node block */ 7530f712c9SDave Chinner int sz; /* root block size */ 7630f712c9SDave Chinner 7730f712c9SDave Chinner /* 7830f712c9SDave Chinner * The maximum number of extents in a file, hence the maximum 7930f712c9SDave Chinner * number of leaf entries, is controlled by the type of di_nextents 8030f712c9SDave Chinner * (a signed 32-bit number, xfs_extnum_t), or by di_anextents 8130f712c9SDave Chinner * (a signed 16-bit number, xfs_aextnum_t). 8230f712c9SDave Chinner * 8330f712c9SDave Chinner * Note that we can no longer assume that if we are in ATTR1 that 8430f712c9SDave Chinner * the fork offset of all the inodes will be 8530f712c9SDave Chinner * (xfs_default_attroffset(ip) >> 3) because we could have mounted 8630f712c9SDave Chinner * with ATTR2 and then mounted back with ATTR1, keeping the 8730f712c9SDave Chinner * di_forkoff's fixed but probably at various positions. Therefore, 8830f712c9SDave Chinner * for both ATTR1 and ATTR2 we have to assume the worst case scenario 8930f712c9SDave Chinner * of a minimum size available. 9030f712c9SDave Chinner */ 9130f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) { 9230f712c9SDave Chinner maxleafents = MAXEXTNUM; 9330f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS); 9430f712c9SDave Chinner } else { 9530f712c9SDave Chinner maxleafents = MAXAEXTNUM; 9630f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINABTPTRS); 9730f712c9SDave Chinner } 9830f712c9SDave Chinner maxrootrecs = xfs_bmdr_maxrecs(sz, 0); 9930f712c9SDave Chinner minleafrecs = mp->m_bmap_dmnr[0]; 10030f712c9SDave Chinner minnoderecs = mp->m_bmap_dmnr[1]; 10130f712c9SDave Chinner maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; 10230f712c9SDave Chinner for (level = 1; maxblocks > 1; level++) { 10330f712c9SDave Chinner if (maxblocks <= maxrootrecs) 10430f712c9SDave Chinner maxblocks = 1; 10530f712c9SDave Chinner else 10630f712c9SDave Chinner maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; 10730f712c9SDave Chinner } 10830f712c9SDave Chinner mp->m_bm_maxlevels[whichfork] = level; 10930f712c9SDave Chinner } 11030f712c9SDave Chinner 11130f712c9SDave Chinner STATIC int /* error */ 11230f712c9SDave Chinner xfs_bmbt_lookup_eq( 11330f712c9SDave Chinner struct xfs_btree_cur *cur, 11430f712c9SDave Chinner xfs_fileoff_t off, 11530f712c9SDave Chinner xfs_fsblock_t bno, 11630f712c9SDave Chinner xfs_filblks_t len, 11730f712c9SDave Chinner int *stat) /* success/failure */ 11830f712c9SDave Chinner { 11930f712c9SDave Chinner cur->bc_rec.b.br_startoff = off; 12030f712c9SDave Chinner cur->bc_rec.b.br_startblock = bno; 12130f712c9SDave Chinner cur->bc_rec.b.br_blockcount = len; 12230f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat); 12330f712c9SDave Chinner } 12430f712c9SDave Chinner 12530f712c9SDave Chinner STATIC int /* error */ 12630f712c9SDave Chinner xfs_bmbt_lookup_ge( 12730f712c9SDave Chinner struct xfs_btree_cur *cur, 12830f712c9SDave Chinner xfs_fileoff_t off, 12930f712c9SDave Chinner xfs_fsblock_t bno, 13030f712c9SDave Chinner xfs_filblks_t len, 13130f712c9SDave Chinner int *stat) /* success/failure */ 13230f712c9SDave Chinner { 13330f712c9SDave Chinner cur->bc_rec.b.br_startoff = off; 13430f712c9SDave Chinner cur->bc_rec.b.br_startblock = bno; 13530f712c9SDave Chinner cur->bc_rec.b.br_blockcount = len; 13630f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat); 13730f712c9SDave Chinner } 13830f712c9SDave Chinner 13930f712c9SDave Chinner /* 14030f712c9SDave Chinner * Check if the inode needs to be converted to btree format. 14130f712c9SDave Chinner */ 14230f712c9SDave Chinner static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork) 14330f712c9SDave Chinner { 14460b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 14560b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 14630f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 14730f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 14830f712c9SDave Chinner } 14930f712c9SDave Chinner 15030f712c9SDave Chinner /* 15130f712c9SDave Chinner * Check if the inode should be converted to extent format. 15230f712c9SDave Chinner */ 15330f712c9SDave Chinner static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork) 15430f712c9SDave Chinner { 15560b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 15660b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE && 15730f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) <= 15830f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 15930f712c9SDave Chinner } 16030f712c9SDave Chinner 16130f712c9SDave Chinner /* 16230f712c9SDave Chinner * Update the record referred to by cur to the value given 16330f712c9SDave Chinner * by [off, bno, len, state]. 16430f712c9SDave Chinner * This either works (return 0) or gets an EFSCORRUPTED error. 16530f712c9SDave Chinner */ 16630f712c9SDave Chinner STATIC int 16730f712c9SDave Chinner xfs_bmbt_update( 16830f712c9SDave Chinner struct xfs_btree_cur *cur, 16930f712c9SDave Chinner xfs_fileoff_t off, 17030f712c9SDave Chinner xfs_fsblock_t bno, 17130f712c9SDave Chinner xfs_filblks_t len, 17230f712c9SDave Chinner xfs_exntst_t state) 17330f712c9SDave Chinner { 17430f712c9SDave Chinner union xfs_btree_rec rec; 17530f712c9SDave Chinner 17630f712c9SDave Chinner xfs_bmbt_disk_set_allf(&rec.bmbt, off, bno, len, state); 17730f712c9SDave Chinner return xfs_btree_update(cur, &rec); 17830f712c9SDave Chinner } 17930f712c9SDave Chinner 18030f712c9SDave Chinner /* 18130f712c9SDave Chinner * Compute the worst-case number of indirect blocks that will be used 18230f712c9SDave Chinner * for ip's delayed extent of length "len". 18330f712c9SDave Chinner */ 18430f712c9SDave Chinner STATIC xfs_filblks_t 18530f712c9SDave Chinner xfs_bmap_worst_indlen( 18630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 18730f712c9SDave Chinner xfs_filblks_t len) /* delayed extent length */ 18830f712c9SDave Chinner { 18930f712c9SDave Chinner int level; /* btree level number */ 19030f712c9SDave Chinner int maxrecs; /* maximum record count at this level */ 19130f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 19230f712c9SDave Chinner xfs_filblks_t rval; /* return value */ 19330f712c9SDave Chinner 19430f712c9SDave Chinner mp = ip->i_mount; 19530f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[0]; 19630f712c9SDave Chinner for (level = 0, rval = 0; 19730f712c9SDave Chinner level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK); 19830f712c9SDave Chinner level++) { 19930f712c9SDave Chinner len += maxrecs - 1; 20030f712c9SDave Chinner do_div(len, maxrecs); 20130f712c9SDave Chinner rval += len; 20230f712c9SDave Chinner if (len == 1) 20330f712c9SDave Chinner return rval + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) - 20430f712c9SDave Chinner level - 1; 20530f712c9SDave Chinner if (level == 0) 20630f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[1]; 20730f712c9SDave Chinner } 20830f712c9SDave Chinner return rval; 20930f712c9SDave Chinner } 21030f712c9SDave Chinner 21130f712c9SDave Chinner /* 21230f712c9SDave Chinner * Calculate the default attribute fork offset for newly created inodes. 21330f712c9SDave Chinner */ 21430f712c9SDave Chinner uint 21530f712c9SDave Chinner xfs_default_attroffset( 21630f712c9SDave Chinner struct xfs_inode *ip) 21730f712c9SDave Chinner { 21830f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 21930f712c9SDave Chinner uint offset; 22030f712c9SDave Chinner 22130f712c9SDave Chinner if (mp->m_sb.sb_inodesize == 256) { 22230f712c9SDave Chinner offset = XFS_LITINO(mp, ip->i_d.di_version) - 22330f712c9SDave Chinner XFS_BMDR_SPACE_CALC(MINABTPTRS); 22430f712c9SDave Chinner } else { 22530f712c9SDave Chinner offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); 22630f712c9SDave Chinner } 22730f712c9SDave Chinner 22830f712c9SDave Chinner ASSERT(offset < XFS_LITINO(mp, ip->i_d.di_version)); 22930f712c9SDave Chinner return offset; 23030f712c9SDave Chinner } 23130f712c9SDave Chinner 23230f712c9SDave Chinner /* 23330f712c9SDave Chinner * Helper routine to reset inode di_forkoff field when switching 23430f712c9SDave Chinner * attribute fork from local to extent format - we reset it where 23530f712c9SDave Chinner * possible to make space available for inline data fork extents. 23630f712c9SDave Chinner */ 23730f712c9SDave Chinner STATIC void 23830f712c9SDave Chinner xfs_bmap_forkoff_reset( 23930f712c9SDave Chinner xfs_inode_t *ip, 24030f712c9SDave Chinner int whichfork) 24130f712c9SDave Chinner { 24230f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK && 24330f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_DEV && 24430f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_UUID && 24530f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_BTREE) { 24630f712c9SDave Chinner uint dfl_forkoff = xfs_default_attroffset(ip) >> 3; 24730f712c9SDave Chinner 24830f712c9SDave Chinner if (dfl_forkoff > ip->i_d.di_forkoff) 24930f712c9SDave Chinner ip->i_d.di_forkoff = dfl_forkoff; 25030f712c9SDave Chinner } 25130f712c9SDave Chinner } 25230f712c9SDave Chinner 25330f712c9SDave Chinner #ifdef DEBUG 25430f712c9SDave Chinner STATIC struct xfs_buf * 25530f712c9SDave Chinner xfs_bmap_get_bp( 25630f712c9SDave Chinner struct xfs_btree_cur *cur, 25730f712c9SDave Chinner xfs_fsblock_t bno) 25830f712c9SDave Chinner { 25930f712c9SDave Chinner struct xfs_log_item_desc *lidp; 26030f712c9SDave Chinner int i; 26130f712c9SDave Chinner 26230f712c9SDave Chinner if (!cur) 26330f712c9SDave Chinner return NULL; 26430f712c9SDave Chinner 26530f712c9SDave Chinner for (i = 0; i < XFS_BTREE_MAXLEVELS; i++) { 26630f712c9SDave Chinner if (!cur->bc_bufs[i]) 26730f712c9SDave Chinner break; 26830f712c9SDave Chinner if (XFS_BUF_ADDR(cur->bc_bufs[i]) == bno) 26930f712c9SDave Chinner return cur->bc_bufs[i]; 27030f712c9SDave Chinner } 27130f712c9SDave Chinner 27230f712c9SDave Chinner /* Chase down all the log items to see if the bp is there */ 27330f712c9SDave Chinner list_for_each_entry(lidp, &cur->bc_tp->t_items, lid_trans) { 27430f712c9SDave Chinner struct xfs_buf_log_item *bip; 27530f712c9SDave Chinner bip = (struct xfs_buf_log_item *)lidp->lid_item; 27630f712c9SDave Chinner if (bip->bli_item.li_type == XFS_LI_BUF && 27730f712c9SDave Chinner XFS_BUF_ADDR(bip->bli_buf) == bno) 27830f712c9SDave Chinner return bip->bli_buf; 27930f712c9SDave Chinner } 28030f712c9SDave Chinner 28130f712c9SDave Chinner return NULL; 28230f712c9SDave Chinner } 28330f712c9SDave Chinner 28430f712c9SDave Chinner STATIC void 28530f712c9SDave Chinner xfs_check_block( 28630f712c9SDave Chinner struct xfs_btree_block *block, 28730f712c9SDave Chinner xfs_mount_t *mp, 28830f712c9SDave Chinner int root, 28930f712c9SDave Chinner short sz) 29030f712c9SDave Chinner { 29130f712c9SDave Chinner int i, j, dmxr; 29230f712c9SDave Chinner __be64 *pp, *thispa; /* pointer to block address */ 29330f712c9SDave Chinner xfs_bmbt_key_t *prevp, *keyp; 29430f712c9SDave Chinner 29530f712c9SDave Chinner ASSERT(be16_to_cpu(block->bb_level) > 0); 29630f712c9SDave Chinner 29730f712c9SDave Chinner prevp = NULL; 29830f712c9SDave Chinner for( i = 1; i <= xfs_btree_get_numrecs(block); i++) { 29930f712c9SDave Chinner dmxr = mp->m_bmap_dmxr[0]; 30030f712c9SDave Chinner keyp = XFS_BMBT_KEY_ADDR(mp, block, i); 30130f712c9SDave Chinner 30230f712c9SDave Chinner if (prevp) { 30330f712c9SDave Chinner ASSERT(be64_to_cpu(prevp->br_startoff) < 30430f712c9SDave Chinner be64_to_cpu(keyp->br_startoff)); 30530f712c9SDave Chinner } 30630f712c9SDave Chinner prevp = keyp; 30730f712c9SDave Chinner 30830f712c9SDave Chinner /* 30930f712c9SDave Chinner * Compare the block numbers to see if there are dups. 31030f712c9SDave Chinner */ 31130f712c9SDave Chinner if (root) 31230f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, i, sz); 31330f712c9SDave Chinner else 31430f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, i, dmxr); 31530f712c9SDave Chinner 31630f712c9SDave Chinner for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) { 31730f712c9SDave Chinner if (root) 31830f712c9SDave Chinner thispa = XFS_BMAP_BROOT_PTR_ADDR(mp, block, j, sz); 31930f712c9SDave Chinner else 32030f712c9SDave Chinner thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr); 32130f712c9SDave Chinner if (*thispa == *pp) { 32230f712c9SDave Chinner xfs_warn(mp, "%s: thispa(%d) == pp(%d) %Ld", 32330f712c9SDave Chinner __func__, j, i, 32430f712c9SDave Chinner (unsigned long long)be64_to_cpu(*thispa)); 32530f712c9SDave Chinner panic("%s: ptrs are equal in node\n", 32630f712c9SDave Chinner __func__); 32730f712c9SDave Chinner } 32830f712c9SDave Chinner } 32930f712c9SDave Chinner } 33030f712c9SDave Chinner } 33130f712c9SDave Chinner 33230f712c9SDave Chinner /* 33330f712c9SDave Chinner * Check that the extents for the inode ip are in the right order in all 334e3543819SDave Chinner * btree leaves. THis becomes prohibitively expensive for large extent count 335e3543819SDave Chinner * files, so don't bother with inodes that have more than 10,000 extents in 336e3543819SDave Chinner * them. The btree record ordering checks will still be done, so for such large 337e3543819SDave Chinner * bmapbt constructs that is going to catch most corruptions. 33830f712c9SDave Chinner */ 33930f712c9SDave Chinner STATIC void 34030f712c9SDave Chinner xfs_bmap_check_leaf_extents( 34130f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor or null */ 34230f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 34330f712c9SDave Chinner int whichfork) /* data or attr fork */ 34430f712c9SDave Chinner { 34530f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 34630f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 34730f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 34830f712c9SDave Chinner int error; /* error return value */ 34930f712c9SDave Chinner xfs_extnum_t i=0, j; /* index into the extents list */ 35030f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 35130f712c9SDave Chinner int level; /* btree level, for checking */ 35230f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 35330f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 35430f712c9SDave Chinner xfs_bmbt_rec_t *ep; /* pointer to current extent */ 35530f712c9SDave Chinner xfs_bmbt_rec_t last = {0, 0}; /* last extent in prev block */ 35630f712c9SDave Chinner xfs_bmbt_rec_t *nextp; /* pointer to next extent */ 35730f712c9SDave Chinner int bp_release = 0; 35830f712c9SDave Chinner 35930f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) { 36030f712c9SDave Chinner return; 36130f712c9SDave Chinner } 36230f712c9SDave Chinner 363e3543819SDave Chinner /* skip large extent count inodes */ 364e3543819SDave Chinner if (ip->i_d.di_nextents > 10000) 365e3543819SDave Chinner return; 366e3543819SDave Chinner 36730f712c9SDave Chinner bno = NULLFSBLOCK; 36830f712c9SDave Chinner mp = ip->i_mount; 36930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 37030f712c9SDave Chinner block = ifp->if_broot; 37130f712c9SDave Chinner /* 37230f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 37330f712c9SDave Chinner */ 37430f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 37530f712c9SDave Chinner ASSERT(level > 0); 37630f712c9SDave Chinner xfs_check_block(block, mp, 1, ifp->if_broot_bytes); 37730f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 37830f712c9SDave Chinner bno = be64_to_cpu(*pp); 37930f712c9SDave Chinner 380d5cf09baSChristoph Hellwig ASSERT(bno != NULLFSBLOCK); 38130f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); 38230f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); 38330f712c9SDave Chinner 38430f712c9SDave Chinner /* 38530f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 38630f712c9SDave Chinner * pointer (leftmost) at each level. 38730f712c9SDave Chinner */ 38830f712c9SDave Chinner while (level-- > 0) { 38930f712c9SDave Chinner /* See if buf is in cur first */ 39030f712c9SDave Chinner bp_release = 0; 39130f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 39230f712c9SDave Chinner if (!bp) { 39330f712c9SDave Chinner bp_release = 1; 39430f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 39530f712c9SDave Chinner XFS_BMAP_BTREE_REF, 39630f712c9SDave Chinner &xfs_bmbt_buf_ops); 39730f712c9SDave Chinner if (error) 39830f712c9SDave Chinner goto error_norelse; 39930f712c9SDave Chinner } 40030f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 40130f712c9SDave Chinner if (level == 0) 40230f712c9SDave Chinner break; 40330f712c9SDave Chinner 40430f712c9SDave Chinner /* 40530f712c9SDave Chinner * Check this block for basic sanity (increasing keys and 40630f712c9SDave Chinner * no duplicate blocks). 40730f712c9SDave Chinner */ 40830f712c9SDave Chinner 40930f712c9SDave Chinner xfs_check_block(block, mp, 0, 0); 41030f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 41130f712c9SDave Chinner bno = be64_to_cpu(*pp); 412c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 413c29aad41SEric Sandeen XFS_FSB_SANITY_CHECK(mp, bno), error0); 41430f712c9SDave Chinner if (bp_release) { 41530f712c9SDave Chinner bp_release = 0; 41630f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 41730f712c9SDave Chinner } 41830f712c9SDave Chinner } 41930f712c9SDave Chinner 42030f712c9SDave Chinner /* 42130f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 42230f712c9SDave Chinner */ 42330f712c9SDave Chinner i = 0; 42430f712c9SDave Chinner 42530f712c9SDave Chinner /* 42630f712c9SDave Chinner * Loop over all leaf nodes checking that all extents are in the right order. 42730f712c9SDave Chinner */ 42830f712c9SDave Chinner for (;;) { 42930f712c9SDave Chinner xfs_fsblock_t nextbno; 43030f712c9SDave Chinner xfs_extnum_t num_recs; 43130f712c9SDave Chinner 43230f712c9SDave Chinner 43330f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 43430f712c9SDave Chinner 43530f712c9SDave Chinner /* 43630f712c9SDave Chinner * Read-ahead the next leaf block, if any. 43730f712c9SDave Chinner */ 43830f712c9SDave Chinner 43930f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 44030f712c9SDave Chinner 44130f712c9SDave Chinner /* 44230f712c9SDave Chinner * Check all the extents to make sure they are OK. 44330f712c9SDave Chinner * If we had a previous block, the last entry should 44430f712c9SDave Chinner * conform with the first entry in this one. 44530f712c9SDave Chinner */ 44630f712c9SDave Chinner 44730f712c9SDave Chinner ep = XFS_BMBT_REC_ADDR(mp, block, 1); 44830f712c9SDave Chinner if (i) { 44930f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(&last) + 45030f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(&last) <= 45130f712c9SDave Chinner xfs_bmbt_disk_get_startoff(ep)); 45230f712c9SDave Chinner } 45330f712c9SDave Chinner for (j = 1; j < num_recs; j++) { 45430f712c9SDave Chinner nextp = XFS_BMBT_REC_ADDR(mp, block, j + 1); 45530f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(ep) + 45630f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(ep) <= 45730f712c9SDave Chinner xfs_bmbt_disk_get_startoff(nextp)); 45830f712c9SDave Chinner ep = nextp; 45930f712c9SDave Chinner } 46030f712c9SDave Chinner 46130f712c9SDave Chinner last = *ep; 46230f712c9SDave Chinner i += num_recs; 46330f712c9SDave Chinner if (bp_release) { 46430f712c9SDave Chinner bp_release = 0; 46530f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 46630f712c9SDave Chinner } 46730f712c9SDave Chinner bno = nextbno; 46830f712c9SDave Chinner /* 46930f712c9SDave Chinner * If we've reached the end, stop. 47030f712c9SDave Chinner */ 47130f712c9SDave Chinner if (bno == NULLFSBLOCK) 47230f712c9SDave Chinner break; 47330f712c9SDave Chinner 47430f712c9SDave Chinner bp_release = 0; 47530f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 47630f712c9SDave Chinner if (!bp) { 47730f712c9SDave Chinner bp_release = 1; 47830f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 47930f712c9SDave Chinner XFS_BMAP_BTREE_REF, 48030f712c9SDave Chinner &xfs_bmbt_buf_ops); 48130f712c9SDave Chinner if (error) 48230f712c9SDave Chinner goto error_norelse; 48330f712c9SDave Chinner } 48430f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 48530f712c9SDave Chinner } 486a5fd276bSLuis de Bethencourt 48730f712c9SDave Chinner return; 48830f712c9SDave Chinner 48930f712c9SDave Chinner error0: 49030f712c9SDave Chinner xfs_warn(mp, "%s: at error0", __func__); 49130f712c9SDave Chinner if (bp_release) 49230f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 49330f712c9SDave Chinner error_norelse: 49430f712c9SDave Chinner xfs_warn(mp, "%s: BAD after btree leaves for %d extents", 49530f712c9SDave Chinner __func__, i); 49630f712c9SDave Chinner panic("%s: CORRUPTED BTREE OR SOMETHING", __func__); 49730f712c9SDave Chinner return; 49830f712c9SDave Chinner } 49930f712c9SDave Chinner 50030f712c9SDave Chinner /* 50130f712c9SDave Chinner * Add bmap trace insert entries for all the contents of the extent records. 50230f712c9SDave Chinner */ 50330f712c9SDave Chinner void 50430f712c9SDave Chinner xfs_bmap_trace_exlist( 50530f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 50630f712c9SDave Chinner xfs_extnum_t cnt, /* count of entries in the list */ 50730f712c9SDave Chinner int whichfork, /* data or attr fork */ 50830f712c9SDave Chinner unsigned long caller_ip) 50930f712c9SDave Chinner { 51030f712c9SDave Chinner xfs_extnum_t idx; /* extent record index */ 51130f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 51230f712c9SDave Chinner int state = 0; 51330f712c9SDave Chinner 51430f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 51530f712c9SDave Chinner state |= BMAP_ATTRFORK; 51630f712c9SDave Chinner 51730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 5185d829300SEric Sandeen ASSERT(cnt == xfs_iext_count(ifp)); 51930f712c9SDave Chinner for (idx = 0; idx < cnt; idx++) 52030f712c9SDave Chinner trace_xfs_extlist(ip, idx, whichfork, caller_ip); 52130f712c9SDave Chinner } 52230f712c9SDave Chinner 52330f712c9SDave Chinner /* 52430f712c9SDave Chinner * Validate that the bmbt_irecs being returned from bmapi are valid 52530f712c9SDave Chinner * given the caller's original parameters. Specifically check the 52630f712c9SDave Chinner * ranges of the returned irecs to ensure that they only extend beyond 52730f712c9SDave Chinner * the given parameters if the XFS_BMAPI_ENTIRE flag was set. 52830f712c9SDave Chinner */ 52930f712c9SDave Chinner STATIC void 53030f712c9SDave Chinner xfs_bmap_validate_ret( 53130f712c9SDave Chinner xfs_fileoff_t bno, 53230f712c9SDave Chinner xfs_filblks_t len, 53330f712c9SDave Chinner int flags, 53430f712c9SDave Chinner xfs_bmbt_irec_t *mval, 53530f712c9SDave Chinner int nmap, 53630f712c9SDave Chinner int ret_nmap) 53730f712c9SDave Chinner { 53830f712c9SDave Chinner int i; /* index to map values */ 53930f712c9SDave Chinner 54030f712c9SDave Chinner ASSERT(ret_nmap <= nmap); 54130f712c9SDave Chinner 54230f712c9SDave Chinner for (i = 0; i < ret_nmap; i++) { 54330f712c9SDave Chinner ASSERT(mval[i].br_blockcount > 0); 54430f712c9SDave Chinner if (!(flags & XFS_BMAPI_ENTIRE)) { 54530f712c9SDave Chinner ASSERT(mval[i].br_startoff >= bno); 54630f712c9SDave Chinner ASSERT(mval[i].br_blockcount <= len); 54730f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount <= 54830f712c9SDave Chinner bno + len); 54930f712c9SDave Chinner } else { 55030f712c9SDave Chinner ASSERT(mval[i].br_startoff < bno + len); 55130f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount > 55230f712c9SDave Chinner bno); 55330f712c9SDave Chinner } 55430f712c9SDave Chinner ASSERT(i == 0 || 55530f712c9SDave Chinner mval[i - 1].br_startoff + mval[i - 1].br_blockcount == 55630f712c9SDave Chinner mval[i].br_startoff); 55730f712c9SDave Chinner ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK && 55830f712c9SDave Chinner mval[i].br_startblock != HOLESTARTBLOCK); 55930f712c9SDave Chinner ASSERT(mval[i].br_state == XFS_EXT_NORM || 56030f712c9SDave Chinner mval[i].br_state == XFS_EXT_UNWRITTEN); 56130f712c9SDave Chinner } 56230f712c9SDave Chinner } 56330f712c9SDave Chinner 56430f712c9SDave Chinner #else 56530f712c9SDave Chinner #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0) 56630f712c9SDave Chinner #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) 56730f712c9SDave Chinner #endif /* DEBUG */ 56830f712c9SDave Chinner 56930f712c9SDave Chinner /* 57030f712c9SDave Chinner * bmap free list manipulation functions 57130f712c9SDave Chinner */ 57230f712c9SDave Chinner 57330f712c9SDave Chinner /* 57430f712c9SDave Chinner * Add the extent to the list of extents to be free at transaction end. 57530f712c9SDave Chinner * The list is maintained sorted (by block number). 57630f712c9SDave Chinner */ 57730f712c9SDave Chinner void 57830f712c9SDave Chinner xfs_bmap_add_free( 579340785ccSDarrick J. Wong struct xfs_mount *mp, 580340785ccSDarrick J. Wong struct xfs_defer_ops *dfops, 581340785ccSDarrick J. Wong xfs_fsblock_t bno, 582340785ccSDarrick J. Wong xfs_filblks_t len, 583340785ccSDarrick J. Wong struct xfs_owner_info *oinfo) 58430f712c9SDave Chinner { 585310a75a3SDarrick J. Wong struct xfs_extent_free_item *new; /* new element */ 58630f712c9SDave Chinner #ifdef DEBUG 58730f712c9SDave Chinner xfs_agnumber_t agno; 58830f712c9SDave Chinner xfs_agblock_t agbno; 58930f712c9SDave Chinner 59030f712c9SDave Chinner ASSERT(bno != NULLFSBLOCK); 59130f712c9SDave Chinner ASSERT(len > 0); 59230f712c9SDave Chinner ASSERT(len <= MAXEXTLEN); 59330f712c9SDave Chinner ASSERT(!isnullstartblock(bno)); 59430f712c9SDave Chinner agno = XFS_FSB_TO_AGNO(mp, bno); 59530f712c9SDave Chinner agbno = XFS_FSB_TO_AGBNO(mp, bno); 59630f712c9SDave Chinner ASSERT(agno < mp->m_sb.sb_agcount); 59730f712c9SDave Chinner ASSERT(agbno < mp->m_sb.sb_agblocks); 59830f712c9SDave Chinner ASSERT(len < mp->m_sb.sb_agblocks); 59930f712c9SDave Chinner ASSERT(agbno + len <= mp->m_sb.sb_agblocks); 60030f712c9SDave Chinner #endif 60130f712c9SDave Chinner ASSERT(xfs_bmap_free_item_zone != NULL); 602340785ccSDarrick J. Wong 60330f712c9SDave Chinner new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP); 604310a75a3SDarrick J. Wong new->xefi_startblock = bno; 605310a75a3SDarrick J. Wong new->xefi_blockcount = (xfs_extlen_t)len; 606340785ccSDarrick J. Wong if (oinfo) 607340785ccSDarrick J. Wong new->xefi_oinfo = *oinfo; 608340785ccSDarrick J. Wong else 609340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&new->xefi_oinfo); 610ba9e7802SDarrick J. Wong trace_xfs_bmap_free_defer(mp, XFS_FSB_TO_AGNO(mp, bno), 0, 611ba9e7802SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bno), len); 6122c3234d1SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_FREE, &new->xefi_list); 61330f712c9SDave Chinner } 61430f712c9SDave Chinner 61530f712c9SDave Chinner /* 61630f712c9SDave Chinner * Inode fork format manipulation functions 61730f712c9SDave Chinner */ 61830f712c9SDave Chinner 61930f712c9SDave Chinner /* 62030f712c9SDave Chinner * Transform a btree format file with only one leaf node, where the 62130f712c9SDave Chinner * extents list will fit in the inode, into an extents format file. 62230f712c9SDave Chinner * Since the file extents are already in-core, all we have to do is 62330f712c9SDave Chinner * give up the space for the btree root and pitch the leaf block. 62430f712c9SDave Chinner */ 62530f712c9SDave Chinner STATIC int /* error */ 62630f712c9SDave Chinner xfs_bmap_btree_to_extents( 62730f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 62830f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 62930f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor */ 63030f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 63130f712c9SDave Chinner int whichfork) /* data or attr fork */ 63230f712c9SDave Chinner { 63330f712c9SDave Chinner /* REFERENCED */ 63430f712c9SDave Chinner struct xfs_btree_block *cblock;/* child btree block */ 63530f712c9SDave Chinner xfs_fsblock_t cbno; /* child block number */ 63630f712c9SDave Chinner xfs_buf_t *cbp; /* child block's buffer */ 63730f712c9SDave Chinner int error; /* error return value */ 63830f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork data */ 63930f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 64030f712c9SDave Chinner __be64 *pp; /* ptr to block address */ 64130f712c9SDave Chinner struct xfs_btree_block *rblock;/* root btree block */ 642340785ccSDarrick J. Wong struct xfs_owner_info oinfo; 64330f712c9SDave Chinner 64430f712c9SDave Chinner mp = ip->i_mount; 64530f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 64660b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 64730f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 64830f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 64930f712c9SDave Chinner rblock = ifp->if_broot; 65030f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_level) == 1); 65130f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1); 65230f712c9SDave Chinner ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1); 65330f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes); 65430f712c9SDave Chinner cbno = be64_to_cpu(*pp); 65530f712c9SDave Chinner *logflagsp = 0; 65630f712c9SDave Chinner #ifdef DEBUG 65730f712c9SDave Chinner if ((error = xfs_btree_check_lptr(cur, cbno, 1))) 65830f712c9SDave Chinner return error; 65930f712c9SDave Chinner #endif 66030f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp, XFS_BMAP_BTREE_REF, 66130f712c9SDave Chinner &xfs_bmbt_buf_ops); 66230f712c9SDave Chinner if (error) 66330f712c9SDave Chinner return error; 66430f712c9SDave Chinner cblock = XFS_BUF_TO_BLOCK(cbp); 66530f712c9SDave Chinner if ((error = xfs_btree_check_block(cur, cblock, 0, cbp))) 66630f712c9SDave Chinner return error; 667340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&oinfo, ip->i_ino, whichfork); 668340785ccSDarrick J. Wong xfs_bmap_add_free(mp, cur->bc_private.b.dfops, cbno, 1, &oinfo); 66930f712c9SDave Chinner ip->i_d.di_nblocks--; 67030f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); 67130f712c9SDave Chinner xfs_trans_binval(tp, cbp); 67230f712c9SDave Chinner if (cur->bc_bufs[0] == cbp) 67330f712c9SDave Chinner cur->bc_bufs[0] = NULL; 67430f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 67530f712c9SDave Chinner ASSERT(ifp->if_broot == NULL); 67630f712c9SDave Chinner ASSERT((ifp->if_flags & XFS_IFBROOT) == 0); 67730f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 67830f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 67930f712c9SDave Chinner return 0; 68030f712c9SDave Chinner } 68130f712c9SDave Chinner 68230f712c9SDave Chinner /* 68330f712c9SDave Chinner * Convert an extents-format file into a btree-format file. 68430f712c9SDave Chinner * The new file will have a root block (in the inode) and a single child block. 68530f712c9SDave Chinner */ 68630f712c9SDave Chinner STATIC int /* error */ 68730f712c9SDave Chinner xfs_bmap_extents_to_btree( 68830f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 68930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 69030f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first-block-allocated */ 6912c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks freed in xaction */ 69230f712c9SDave Chinner xfs_btree_cur_t **curp, /* cursor returned to caller */ 69330f712c9SDave Chinner int wasdel, /* converting a delayed alloc */ 69430f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 69530f712c9SDave Chinner int whichfork) /* data or attr fork */ 69630f712c9SDave Chinner { 69730f712c9SDave Chinner struct xfs_btree_block *ablock; /* allocated (child) bt block */ 69830f712c9SDave Chinner xfs_buf_t *abp; /* buffer for ablock */ 69930f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 70030f712c9SDave Chinner xfs_bmbt_rec_t *arp; /* child record pointer */ 70130f712c9SDave Chinner struct xfs_btree_block *block; /* btree root block */ 70230f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 70330f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent record pointer */ 70430f712c9SDave Chinner int error; /* error return value */ 70530f712c9SDave Chinner xfs_extnum_t i, cnt; /* extent record index */ 70630f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 70730f712c9SDave Chinner xfs_bmbt_key_t *kp; /* root block key pointer */ 70830f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 70930f712c9SDave Chinner xfs_extnum_t nextents; /* number of file extents */ 71030f712c9SDave Chinner xfs_bmbt_ptr_t *pp; /* root block address pointer */ 71130f712c9SDave Chinner 71230f712c9SDave Chinner mp = ip->i_mount; 71360b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 71430f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 71530f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS); 71630f712c9SDave Chinner 71730f712c9SDave Chinner /* 71830f712c9SDave Chinner * Make space in the inode incore. 71930f712c9SDave Chinner */ 72030f712c9SDave Chinner xfs_iroot_realloc(ip, 1, whichfork); 72130f712c9SDave Chinner ifp->if_flags |= XFS_IFBROOT; 72230f712c9SDave Chinner 72330f712c9SDave Chinner /* 72430f712c9SDave Chinner * Fill in the root. 72530f712c9SDave Chinner */ 72630f712c9SDave Chinner block = ifp->if_broot; 72730f712c9SDave Chinner if (xfs_sb_version_hascrc(&mp->m_sb)) 72830f712c9SDave Chinner xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL, 72930f712c9SDave Chinner XFS_BMAP_CRC_MAGIC, 1, 1, ip->i_ino, 73030f712c9SDave Chinner XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS); 73130f712c9SDave Chinner else 73230f712c9SDave Chinner xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL, 73330f712c9SDave Chinner XFS_BMAP_MAGIC, 1, 1, ip->i_ino, 73430f712c9SDave Chinner XFS_BTREE_LONG_PTRS); 73530f712c9SDave Chinner 73630f712c9SDave Chinner /* 73730f712c9SDave Chinner * Need a cursor. Can't allocate until bb_level is filled in. 73830f712c9SDave Chinner */ 73930f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 74030f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 7412c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 74230f712c9SDave Chinner cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 74330f712c9SDave Chinner /* 74430f712c9SDave Chinner * Convert to a btree with two levels, one record in root. 74530f712c9SDave Chinner */ 74630f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE); 74730f712c9SDave Chinner memset(&args, 0, sizeof(args)); 74830f712c9SDave Chinner args.tp = tp; 74930f712c9SDave Chinner args.mp = mp; 750340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&args.oinfo, ip->i_ino, whichfork); 75130f712c9SDave Chinner args.firstblock = *firstblock; 75230f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 75330f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 75430f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino); 7552c3234d1SDarrick J. Wong } else if (dfops->dop_low) { 75690e2056dSDarrick J. Wong try_another_ag: 75730f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 75830f712c9SDave Chinner args.fsbno = *firstblock; 75930f712c9SDave Chinner } else { 76030f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 76130f712c9SDave Chinner args.fsbno = *firstblock; 76230f712c9SDave Chinner } 76330f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 76430f712c9SDave Chinner args.wasdel = wasdel; 76530f712c9SDave Chinner *logflagsp = 0; 76630f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) { 76730f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 76830f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 76930f712c9SDave Chinner return error; 77030f712c9SDave Chinner } 77190e2056dSDarrick J. Wong 77290e2056dSDarrick J. Wong /* 77390e2056dSDarrick J. Wong * During a CoW operation, the allocation and bmbt updates occur in 77490e2056dSDarrick J. Wong * different transactions. The mapping code tries to put new bmbt 77590e2056dSDarrick J. Wong * blocks near extents being mapped, but the only way to guarantee this 77690e2056dSDarrick J. Wong * is if the alloc and the mapping happen in a single transaction that 77790e2056dSDarrick J. Wong * has a block reservation. That isn't the case here, so if we run out 77890e2056dSDarrick J. Wong * of space we'll try again with another AG. 77990e2056dSDarrick J. Wong */ 78090e2056dSDarrick J. Wong if (xfs_sb_version_hasreflink(&cur->bc_mp->m_sb) && 78190e2056dSDarrick J. Wong args.fsbno == NULLFSBLOCK && 78290e2056dSDarrick J. Wong args.type == XFS_ALLOCTYPE_NEAR_BNO) { 78390e2056dSDarrick J. Wong dfops->dop_low = true; 78490e2056dSDarrick J. Wong goto try_another_ag; 78590e2056dSDarrick J. Wong } 78630f712c9SDave Chinner /* 78730f712c9SDave Chinner * Allocation can't fail, the space was reserved. 78830f712c9SDave Chinner */ 78930f712c9SDave Chinner ASSERT(args.fsbno != NULLFSBLOCK); 79030f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 79130f712c9SDave Chinner args.agno == XFS_FSB_TO_AGNO(mp, *firstblock) || 7922c3234d1SDarrick J. Wong (dfops->dop_low && 79330f712c9SDave Chinner args.agno > XFS_FSB_TO_AGNO(mp, *firstblock))); 79430f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock = args.fsbno; 79530f712c9SDave Chinner cur->bc_private.b.allocated++; 79630f712c9SDave Chinner ip->i_d.di_nblocks++; 79730f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); 79830f712c9SDave Chinner abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0); 79930f712c9SDave Chinner /* 80030f712c9SDave Chinner * Fill in the child block. 80130f712c9SDave Chinner */ 80230f712c9SDave Chinner abp->b_ops = &xfs_bmbt_buf_ops; 80330f712c9SDave Chinner ablock = XFS_BUF_TO_BLOCK(abp); 80430f712c9SDave Chinner if (xfs_sb_version_hascrc(&mp->m_sb)) 80530f712c9SDave Chinner xfs_btree_init_block_int(mp, ablock, abp->b_bn, 80630f712c9SDave Chinner XFS_BMAP_CRC_MAGIC, 0, 0, ip->i_ino, 80730f712c9SDave Chinner XFS_BTREE_LONG_PTRS | XFS_BTREE_CRC_BLOCKS); 80830f712c9SDave Chinner else 80930f712c9SDave Chinner xfs_btree_init_block_int(mp, ablock, abp->b_bn, 81030f712c9SDave Chinner XFS_BMAP_MAGIC, 0, 0, ip->i_ino, 81130f712c9SDave Chinner XFS_BTREE_LONG_PTRS); 81230f712c9SDave Chinner 81330f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 8145d829300SEric Sandeen nextents = xfs_iext_count(ifp); 81530f712c9SDave Chinner for (cnt = i = 0; i < nextents; i++) { 81630f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, i); 81730f712c9SDave Chinner if (!isnullstartblock(xfs_bmbt_get_startblock(ep))) { 81830f712c9SDave Chinner arp->l0 = cpu_to_be64(ep->l0); 81930f712c9SDave Chinner arp->l1 = cpu_to_be64(ep->l1); 82030f712c9SDave Chinner arp++; cnt++; 82130f712c9SDave Chinner } 82230f712c9SDave Chinner } 82330f712c9SDave Chinner ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork)); 82430f712c9SDave Chinner xfs_btree_set_numrecs(ablock, cnt); 82530f712c9SDave Chinner 82630f712c9SDave Chinner /* 82730f712c9SDave Chinner * Fill in the root key and pointer. 82830f712c9SDave Chinner */ 82930f712c9SDave Chinner kp = XFS_BMBT_KEY_ADDR(mp, block, 1); 83030f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 83130f712c9SDave Chinner kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp)); 83230f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur, 83330f712c9SDave Chinner be16_to_cpu(block->bb_level))); 83430f712c9SDave Chinner *pp = cpu_to_be64(args.fsbno); 83530f712c9SDave Chinner 83630f712c9SDave Chinner /* 83730f712c9SDave Chinner * Do all this logging at the end so that 83830f712c9SDave Chinner * the root is at the right level. 83930f712c9SDave Chinner */ 84030f712c9SDave Chinner xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS); 84130f712c9SDave Chinner xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs)); 84230f712c9SDave Chinner ASSERT(*curp == NULL); 84330f712c9SDave Chinner *curp = cur; 84430f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork); 84530f712c9SDave Chinner return 0; 84630f712c9SDave Chinner } 84730f712c9SDave Chinner 84830f712c9SDave Chinner /* 84930f712c9SDave Chinner * Convert a local file to an extents file. 85030f712c9SDave Chinner * This code is out of bounds for data forks of regular files, 85130f712c9SDave Chinner * since the file data needs to get logged so things will stay consistent. 85230f712c9SDave Chinner * (The bmap-level manipulations are ok, though). 85330f712c9SDave Chinner */ 85430f712c9SDave Chinner void 85530f712c9SDave Chinner xfs_bmap_local_to_extents_empty( 85630f712c9SDave Chinner struct xfs_inode *ip, 85730f712c9SDave Chinner int whichfork) 85830f712c9SDave Chinner { 85930f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 86030f712c9SDave Chinner 86160b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 86230f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 86330f712c9SDave Chinner ASSERT(ifp->if_bytes == 0); 86430f712c9SDave Chinner ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0); 86530f712c9SDave Chinner 86630f712c9SDave Chinner xfs_bmap_forkoff_reset(ip, whichfork); 86730f712c9SDave Chinner ifp->if_flags &= ~XFS_IFINLINE; 86830f712c9SDave Chinner ifp->if_flags |= XFS_IFEXTENTS; 86930f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 87030f712c9SDave Chinner } 87130f712c9SDave Chinner 87230f712c9SDave Chinner 87330f712c9SDave Chinner STATIC int /* error */ 87430f712c9SDave Chinner xfs_bmap_local_to_extents( 87530f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 87630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 87730f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated in xaction */ 87830f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed by transaction */ 87930f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 88030f712c9SDave Chinner int whichfork, 88130f712c9SDave Chinner void (*init_fn)(struct xfs_trans *tp, 88230f712c9SDave Chinner struct xfs_buf *bp, 88330f712c9SDave Chinner struct xfs_inode *ip, 88430f712c9SDave Chinner struct xfs_ifork *ifp)) 88530f712c9SDave Chinner { 88630f712c9SDave Chinner int error = 0; 88730f712c9SDave Chinner int flags; /* logging flags returned */ 88830f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 88930f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 89030f712c9SDave Chinner xfs_buf_t *bp; /* buffer for extent block */ 89130f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent record pointer */ 89230f712c9SDave Chinner 89330f712c9SDave Chinner /* 89430f712c9SDave Chinner * We don't want to deal with the case of keeping inode data inline yet. 89530f712c9SDave Chinner * So sending the data fork of a regular inode is invalid. 89630f712c9SDave Chinner */ 897c19b3b05SDave Chinner ASSERT(!(S_ISREG(VFS_I(ip)->i_mode) && whichfork == XFS_DATA_FORK)); 89830f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 89930f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 90030f712c9SDave Chinner 90130f712c9SDave Chinner if (!ifp->if_bytes) { 90230f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 90330f712c9SDave Chinner flags = XFS_ILOG_CORE; 90430f712c9SDave Chinner goto done; 90530f712c9SDave Chinner } 90630f712c9SDave Chinner 90730f712c9SDave Chinner flags = 0; 90830f712c9SDave Chinner error = 0; 90930f712c9SDave Chinner ASSERT((ifp->if_flags & (XFS_IFINLINE|XFS_IFEXTENTS|XFS_IFEXTIREC)) == 91030f712c9SDave Chinner XFS_IFINLINE); 91130f712c9SDave Chinner memset(&args, 0, sizeof(args)); 91230f712c9SDave Chinner args.tp = tp; 91330f712c9SDave Chinner args.mp = ip->i_mount; 914340785ccSDarrick J. Wong xfs_rmap_ino_owner(&args.oinfo, ip->i_ino, whichfork, 0); 91530f712c9SDave Chinner args.firstblock = *firstblock; 91630f712c9SDave Chinner /* 91730f712c9SDave Chinner * Allocate a block. We know we need only one, since the 91830f712c9SDave Chinner * file currently fits in an inode. 91930f712c9SDave Chinner */ 92030f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 92190e2056dSDarrick J. Wong try_another_ag: 92230f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino); 92330f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 92430f712c9SDave Chinner } else { 92530f712c9SDave Chinner args.fsbno = *firstblock; 92630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 92730f712c9SDave Chinner } 92830f712c9SDave Chinner args.total = total; 92930f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 93030f712c9SDave Chinner error = xfs_alloc_vextent(&args); 93130f712c9SDave Chinner if (error) 93230f712c9SDave Chinner goto done; 93330f712c9SDave Chinner 93490e2056dSDarrick J. Wong /* 93590e2056dSDarrick J. Wong * During a CoW operation, the allocation and bmbt updates occur in 93690e2056dSDarrick J. Wong * different transactions. The mapping code tries to put new bmbt 93790e2056dSDarrick J. Wong * blocks near extents being mapped, but the only way to guarantee this 93890e2056dSDarrick J. Wong * is if the alloc and the mapping happen in a single transaction that 93990e2056dSDarrick J. Wong * has a block reservation. That isn't the case here, so if we run out 94090e2056dSDarrick J. Wong * of space we'll try again with another AG. 94190e2056dSDarrick J. Wong */ 94290e2056dSDarrick J. Wong if (xfs_sb_version_hasreflink(&ip->i_mount->m_sb) && 94390e2056dSDarrick J. Wong args.fsbno == NULLFSBLOCK && 94490e2056dSDarrick J. Wong args.type == XFS_ALLOCTYPE_NEAR_BNO) { 94590e2056dSDarrick J. Wong goto try_another_ag; 94690e2056dSDarrick J. Wong } 94730f712c9SDave Chinner /* Can't fail, the space was reserved. */ 94830f712c9SDave Chinner ASSERT(args.fsbno != NULLFSBLOCK); 94930f712c9SDave Chinner ASSERT(args.len == 1); 95030f712c9SDave Chinner *firstblock = args.fsbno; 95130f712c9SDave Chinner bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); 95230f712c9SDave Chinner 953fe22d552SDave Chinner /* 954b7cdc66bSBrian Foster * Initialize the block, copy the data and log the remote buffer. 955fe22d552SDave Chinner * 956b7cdc66bSBrian Foster * The callout is responsible for logging because the remote format 957b7cdc66bSBrian Foster * might differ from the local format and thus we don't know how much to 958b7cdc66bSBrian Foster * log here. Note that init_fn must also set the buffer log item type 959b7cdc66bSBrian Foster * correctly. 960fe22d552SDave Chinner */ 96130f712c9SDave Chinner init_fn(tp, bp, ip, ifp); 96230f712c9SDave Chinner 963b7cdc66bSBrian Foster /* account for the change in fork size */ 96430f712c9SDave Chinner xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); 96530f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 96630f712c9SDave Chinner flags |= XFS_ILOG_CORE; 96730f712c9SDave Chinner 96830f712c9SDave Chinner xfs_iext_add(ifp, 0, 1); 96930f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, 0); 97030f712c9SDave Chinner xfs_bmbt_set_allf(ep, 0, args.fsbno, 1, XFS_EXT_NORM); 97130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, 0, 97230f712c9SDave Chinner whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0, 97330f712c9SDave Chinner _THIS_IP_); 97430f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 1); 97530f712c9SDave Chinner ip->i_d.di_nblocks = 1; 97630f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, 97730f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 1L); 97830f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 97930f712c9SDave Chinner 98030f712c9SDave Chinner done: 98130f712c9SDave Chinner *logflagsp = flags; 98230f712c9SDave Chinner return error; 98330f712c9SDave Chinner } 98430f712c9SDave Chinner 98530f712c9SDave Chinner /* 98630f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle btree format files. 98730f712c9SDave Chinner */ 98830f712c9SDave Chinner STATIC int /* error */ 98930f712c9SDave Chinner xfs_bmap_add_attrfork_btree( 99030f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 99130f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 99230f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 9932c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 99430f712c9SDave Chinner int *flags) /* inode logging flags */ 99530f712c9SDave Chinner { 99630f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 99730f712c9SDave Chinner int error; /* error return value */ 99830f712c9SDave Chinner xfs_mount_t *mp; /* file system mount struct */ 99930f712c9SDave Chinner int stat; /* newroot status */ 100030f712c9SDave Chinner 100130f712c9SDave Chinner mp = ip->i_mount; 100230f712c9SDave Chinner if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip)) 100330f712c9SDave Chinner *flags |= XFS_ILOG_DBROOT; 100430f712c9SDave Chinner else { 100530f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); 10062c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 100730f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 100830f712c9SDave Chinner if ((error = xfs_bmbt_lookup_ge(cur, 0, 0, 0, &stat))) 100930f712c9SDave Chinner goto error0; 101030f712c9SDave Chinner /* must be at least one entry */ 1011c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, stat == 1, error0); 101230f712c9SDave Chinner if ((error = xfs_btree_new_iroot(cur, flags, &stat))) 101330f712c9SDave Chinner goto error0; 101430f712c9SDave Chinner if (stat == 0) { 101530f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 10162451337dSDave Chinner return -ENOSPC; 101730f712c9SDave Chinner } 101830f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock; 101930f712c9SDave Chinner cur->bc_private.b.allocated = 0; 102030f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 102130f712c9SDave Chinner } 102230f712c9SDave Chinner return 0; 102330f712c9SDave Chinner error0: 102430f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 102530f712c9SDave Chinner return error; 102630f712c9SDave Chinner } 102730f712c9SDave Chinner 102830f712c9SDave Chinner /* 102930f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle extents format files. 103030f712c9SDave Chinner */ 103130f712c9SDave Chinner STATIC int /* error */ 103230f712c9SDave Chinner xfs_bmap_add_attrfork_extents( 103330f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 103430f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 103530f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 10362c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 103730f712c9SDave Chinner int *flags) /* inode logging flags */ 103830f712c9SDave Chinner { 103930f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 104030f712c9SDave Chinner int error; /* error return value */ 104130f712c9SDave Chinner 104230f712c9SDave Chinner if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip)) 104330f712c9SDave Chinner return 0; 104430f712c9SDave Chinner cur = NULL; 10452c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstblock, dfops, &cur, 0, 104630f712c9SDave Chinner flags, XFS_DATA_FORK); 104730f712c9SDave Chinner if (cur) { 104830f712c9SDave Chinner cur->bc_private.b.allocated = 0; 104930f712c9SDave Chinner xfs_btree_del_cursor(cur, 105030f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 105130f712c9SDave Chinner } 105230f712c9SDave Chinner return error; 105330f712c9SDave Chinner } 105430f712c9SDave Chinner 105530f712c9SDave Chinner /* 105630f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle local format files. Each 105730f712c9SDave Chinner * different data fork content type needs a different callout to do the 105830f712c9SDave Chinner * conversion. Some are basic and only require special block initialisation 105930f712c9SDave Chinner * callouts for the data formating, others (directories) are so specialised they 106030f712c9SDave Chinner * handle everything themselves. 106130f712c9SDave Chinner * 106230f712c9SDave Chinner * XXX (dgc): investigate whether directory conversion can use the generic 106330f712c9SDave Chinner * formatting callout. It should be possible - it's just a very complex 106430f712c9SDave Chinner * formatter. 106530f712c9SDave Chinner */ 106630f712c9SDave Chinner STATIC int /* error */ 106730f712c9SDave Chinner xfs_bmap_add_attrfork_local( 106830f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 106930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 107030f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated */ 10712c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* blocks to free at commit */ 107230f712c9SDave Chinner int *flags) /* inode logging flags */ 107330f712c9SDave Chinner { 107430f712c9SDave Chinner xfs_da_args_t dargs; /* args for dir/attr code */ 107530f712c9SDave Chinner 107630f712c9SDave Chinner if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) 107730f712c9SDave Chinner return 0; 107830f712c9SDave Chinner 1079c19b3b05SDave Chinner if (S_ISDIR(VFS_I(ip)->i_mode)) { 108030f712c9SDave Chinner memset(&dargs, 0, sizeof(dargs)); 108130f712c9SDave Chinner dargs.geo = ip->i_mount->m_dir_geo; 108230f712c9SDave Chinner dargs.dp = ip; 108330f712c9SDave Chinner dargs.firstblock = firstblock; 10842c3234d1SDarrick J. Wong dargs.dfops = dfops; 108530f712c9SDave Chinner dargs.total = dargs.geo->fsbcount; 108630f712c9SDave Chinner dargs.whichfork = XFS_DATA_FORK; 108730f712c9SDave Chinner dargs.trans = tp; 108830f712c9SDave Chinner return xfs_dir2_sf_to_block(&dargs); 108930f712c9SDave Chinner } 109030f712c9SDave Chinner 1091c19b3b05SDave Chinner if (S_ISLNK(VFS_I(ip)->i_mode)) 109230f712c9SDave Chinner return xfs_bmap_local_to_extents(tp, ip, firstblock, 1, 109330f712c9SDave Chinner flags, XFS_DATA_FORK, 109430f712c9SDave Chinner xfs_symlink_local_to_remote); 109530f712c9SDave Chinner 109630f712c9SDave Chinner /* should only be called for types that support local format data */ 109730f712c9SDave Chinner ASSERT(0); 10982451337dSDave Chinner return -EFSCORRUPTED; 109930f712c9SDave Chinner } 110030f712c9SDave Chinner 110130f712c9SDave Chinner /* 110230f712c9SDave Chinner * Convert inode from non-attributed to attributed. 110330f712c9SDave Chinner * Must not be in a transaction, ip must not be locked. 110430f712c9SDave Chinner */ 110530f712c9SDave Chinner int /* error code */ 110630f712c9SDave Chinner xfs_bmap_add_attrfork( 110730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 110830f712c9SDave Chinner int size, /* space new attribute needs */ 110930f712c9SDave Chinner int rsvd) /* xact may use reserved blks */ 111030f712c9SDave Chinner { 111130f712c9SDave Chinner xfs_fsblock_t firstblock; /* 1st block/ag allocated */ 11122c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; /* freed extent records */ 111330f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 111430f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */ 111530f712c9SDave Chinner int blks; /* space reservation */ 111630f712c9SDave Chinner int version = 1; /* superblock attr version */ 111730f712c9SDave Chinner int logflags; /* logging flags */ 111830f712c9SDave Chinner int error; /* error return value */ 111930f712c9SDave Chinner 112030f712c9SDave Chinner ASSERT(XFS_IFORK_Q(ip) == 0); 112130f712c9SDave Chinner 112230f712c9SDave Chinner mp = ip->i_mount; 112330f712c9SDave Chinner ASSERT(!XFS_NOT_DQATTACHED(mp, ip)); 1124253f4911SChristoph Hellwig 112530f712c9SDave Chinner blks = XFS_ADDAFORK_SPACE_RES(mp); 1126253f4911SChristoph Hellwig 1127253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_addafork, blks, 0, 1128253f4911SChristoph Hellwig rsvd ? XFS_TRANS_RESERVE : 0, &tp); 1129253f4911SChristoph Hellwig if (error) 113030f712c9SDave Chinner return error; 1131253f4911SChristoph Hellwig 113230f712c9SDave Chinner xfs_ilock(ip, XFS_ILOCK_EXCL); 113330f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ? 113430f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES : 113530f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS); 113630f712c9SDave Chinner if (error) 113730f712c9SDave Chinner goto trans_cancel; 113830f712c9SDave Chinner if (XFS_IFORK_Q(ip)) 113930f712c9SDave Chinner goto trans_cancel; 114030f712c9SDave Chinner if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) { 114130f712c9SDave Chinner /* 114230f712c9SDave Chinner * For inodes coming from pre-6.2 filesystems. 114330f712c9SDave Chinner */ 114430f712c9SDave Chinner ASSERT(ip->i_d.di_aformat == 0); 114530f712c9SDave Chinner ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS; 114630f712c9SDave Chinner } 114730f712c9SDave Chinner ASSERT(ip->i_d.di_anextents == 0); 114830f712c9SDave Chinner 114930f712c9SDave Chinner xfs_trans_ijoin(tp, ip, 0); 115030f712c9SDave Chinner xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 115130f712c9SDave Chinner 115230f712c9SDave Chinner switch (ip->i_d.di_format) { 115330f712c9SDave Chinner case XFS_DINODE_FMT_DEV: 115430f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3; 115530f712c9SDave Chinner break; 115630f712c9SDave Chinner case XFS_DINODE_FMT_UUID: 115730f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(uuid_t), 8) >> 3; 115830f712c9SDave Chinner break; 115930f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 116030f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 116130f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 116230f712c9SDave Chinner ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size); 116330f712c9SDave Chinner if (!ip->i_d.di_forkoff) 116430f712c9SDave Chinner ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3; 116530f712c9SDave Chinner else if (mp->m_flags & XFS_MOUNT_ATTR2) 116630f712c9SDave Chinner version = 2; 116730f712c9SDave Chinner break; 116830f712c9SDave Chinner default: 116930f712c9SDave Chinner ASSERT(0); 11702451337dSDave Chinner error = -EINVAL; 117130f712c9SDave Chinner goto trans_cancel; 117230f712c9SDave Chinner } 117330f712c9SDave Chinner 117430f712c9SDave Chinner ASSERT(ip->i_afp == NULL); 117530f712c9SDave Chinner ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP); 117630f712c9SDave Chinner ip->i_afp->if_flags = XFS_IFEXTENTS; 117730f712c9SDave Chinner logflags = 0; 11782c3234d1SDarrick J. Wong xfs_defer_init(&dfops, &firstblock); 117930f712c9SDave Chinner switch (ip->i_d.di_format) { 118030f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 11812c3234d1SDarrick J. Wong error = xfs_bmap_add_attrfork_local(tp, ip, &firstblock, &dfops, 118230f712c9SDave Chinner &logflags); 118330f712c9SDave Chinner break; 118430f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 118530f712c9SDave Chinner error = xfs_bmap_add_attrfork_extents(tp, ip, &firstblock, 11862c3234d1SDarrick J. Wong &dfops, &logflags); 118730f712c9SDave Chinner break; 118830f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 11892c3234d1SDarrick J. Wong error = xfs_bmap_add_attrfork_btree(tp, ip, &firstblock, &dfops, 119030f712c9SDave Chinner &logflags); 119130f712c9SDave Chinner break; 119230f712c9SDave Chinner default: 119330f712c9SDave Chinner error = 0; 119430f712c9SDave Chinner break; 119530f712c9SDave Chinner } 119630f712c9SDave Chinner if (logflags) 119730f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 119830f712c9SDave Chinner if (error) 119930f712c9SDave Chinner goto bmap_cancel; 120030f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb) || 120130f712c9SDave Chinner (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) { 120261e63ecbSDave Chinner bool log_sb = false; 120330f712c9SDave Chinner 120430f712c9SDave Chinner spin_lock(&mp->m_sb_lock); 120530f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb)) { 120630f712c9SDave Chinner xfs_sb_version_addattr(&mp->m_sb); 120761e63ecbSDave Chinner log_sb = true; 120830f712c9SDave Chinner } 120930f712c9SDave Chinner if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) { 121030f712c9SDave Chinner xfs_sb_version_addattr2(&mp->m_sb); 121161e63ecbSDave Chinner log_sb = true; 121230f712c9SDave Chinner } 121330f712c9SDave Chinner spin_unlock(&mp->m_sb_lock); 121461e63ecbSDave Chinner if (log_sb) 121561e63ecbSDave Chinner xfs_log_sb(tp); 121630f712c9SDave Chinner } 121730f712c9SDave Chinner 12182c3234d1SDarrick J. Wong error = xfs_defer_finish(&tp, &dfops, NULL); 121930f712c9SDave Chinner if (error) 122030f712c9SDave Chinner goto bmap_cancel; 122170393313SChristoph Hellwig error = xfs_trans_commit(tp); 122230f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 122330f712c9SDave Chinner return error; 122430f712c9SDave Chinner 122530f712c9SDave Chinner bmap_cancel: 12262c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 122730f712c9SDave Chinner trans_cancel: 12284906e215SChristoph Hellwig xfs_trans_cancel(tp); 122930f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 123030f712c9SDave Chinner return error; 123130f712c9SDave Chinner } 123230f712c9SDave Chinner 123330f712c9SDave Chinner /* 123430f712c9SDave Chinner * Internal and external extent tree search functions. 123530f712c9SDave Chinner */ 123630f712c9SDave Chinner 123730f712c9SDave Chinner /* 123830f712c9SDave Chinner * Read in the extents to if_extents. 123930f712c9SDave Chinner * All inode fields are set up by caller, we just traverse the btree 124030f712c9SDave Chinner * and copy the records in. If the file system cannot contain unwritten 124130f712c9SDave Chinner * extents, the records are checked for no "state" flags. 124230f712c9SDave Chinner */ 124330f712c9SDave Chinner int /* error */ 124430f712c9SDave Chinner xfs_bmap_read_extents( 124530f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 124630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 124730f712c9SDave Chinner int whichfork) /* data or attr fork */ 124830f712c9SDave Chinner { 124930f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 125030f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 125130f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 125230f712c9SDave Chinner int error; /* error return value */ 125330f712c9SDave Chinner xfs_exntfmt_t exntf; /* XFS_EXTFMT_NOSTATE, if checking */ 125430f712c9SDave Chinner xfs_extnum_t i, j; /* index into the extents list */ 125530f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 125630f712c9SDave Chinner int level; /* btree level, for checking */ 125730f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 125830f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 125930f712c9SDave Chinner /* REFERENCED */ 126030f712c9SDave Chinner xfs_extnum_t room; /* number of entries there's room for */ 126130f712c9SDave Chinner 126230f712c9SDave Chinner bno = NULLFSBLOCK; 126330f712c9SDave Chinner mp = ip->i_mount; 126430f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 126530f712c9SDave Chinner exntf = (whichfork != XFS_DATA_FORK) ? XFS_EXTFMT_NOSTATE : 126630f712c9SDave Chinner XFS_EXTFMT_INODE(ip); 126730f712c9SDave Chinner block = ifp->if_broot; 126830f712c9SDave Chinner /* 126930f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 127030f712c9SDave Chinner */ 127130f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 127230f712c9SDave Chinner ASSERT(level > 0); 127330f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 127430f712c9SDave Chinner bno = be64_to_cpu(*pp); 1275d5cf09baSChristoph Hellwig ASSERT(bno != NULLFSBLOCK); 127630f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); 127730f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); 127830f712c9SDave Chinner /* 127930f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 128030f712c9SDave Chinner * pointer (leftmost) at each level. 128130f712c9SDave Chinner */ 128230f712c9SDave Chinner while (level-- > 0) { 128330f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 128430f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 128530f712c9SDave Chinner if (error) 128630f712c9SDave Chinner return error; 128730f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 128830f712c9SDave Chinner if (level == 0) 128930f712c9SDave Chinner break; 129030f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 129130f712c9SDave Chinner bno = be64_to_cpu(*pp); 1292c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 1293c29aad41SEric Sandeen XFS_FSB_SANITY_CHECK(mp, bno), error0); 129430f712c9SDave Chinner xfs_trans_brelse(tp, bp); 129530f712c9SDave Chinner } 129630f712c9SDave Chinner /* 129730f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 129830f712c9SDave Chinner */ 12995d829300SEric Sandeen room = xfs_iext_count(ifp); 130030f712c9SDave Chinner i = 0; 130130f712c9SDave Chinner /* 130230f712c9SDave Chinner * Loop over all leaf nodes. Copy information to the extent records. 130330f712c9SDave Chinner */ 130430f712c9SDave Chinner for (;;) { 130530f712c9SDave Chinner xfs_bmbt_rec_t *frp; 130630f712c9SDave Chinner xfs_fsblock_t nextbno; 130730f712c9SDave Chinner xfs_extnum_t num_recs; 130830f712c9SDave Chinner xfs_extnum_t start; 130930f712c9SDave Chinner 131030f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 131130f712c9SDave Chinner if (unlikely(i + num_recs > room)) { 131230f712c9SDave Chinner ASSERT(i + num_recs <= room); 131330f712c9SDave Chinner xfs_warn(ip->i_mount, 131430f712c9SDave Chinner "corrupt dinode %Lu, (btree extents).", 131530f712c9SDave Chinner (unsigned long long) ip->i_ino); 131630f712c9SDave Chinner XFS_CORRUPTION_ERROR("xfs_bmap_read_extents(1)", 131730f712c9SDave Chinner XFS_ERRLEVEL_LOW, ip->i_mount, block); 131830f712c9SDave Chinner goto error0; 131930f712c9SDave Chinner } 132030f712c9SDave Chinner /* 132130f712c9SDave Chinner * Read-ahead the next leaf block, if any. 132230f712c9SDave Chinner */ 132330f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 132430f712c9SDave Chinner if (nextbno != NULLFSBLOCK) 132530f712c9SDave Chinner xfs_btree_reada_bufl(mp, nextbno, 1, 132630f712c9SDave Chinner &xfs_bmbt_buf_ops); 132730f712c9SDave Chinner /* 132830f712c9SDave Chinner * Copy records into the extent records. 132930f712c9SDave Chinner */ 133030f712c9SDave Chinner frp = XFS_BMBT_REC_ADDR(mp, block, 1); 133130f712c9SDave Chinner start = i; 133230f712c9SDave Chinner for (j = 0; j < num_recs; j++, i++, frp++) { 133330f712c9SDave Chinner xfs_bmbt_rec_host_t *trp = xfs_iext_get_ext(ifp, i); 133430f712c9SDave Chinner trp->l0 = be64_to_cpu(frp->l0); 133530f712c9SDave Chinner trp->l1 = be64_to_cpu(frp->l1); 133630f712c9SDave Chinner } 133730f712c9SDave Chinner if (exntf == XFS_EXTFMT_NOSTATE) { 133830f712c9SDave Chinner /* 133930f712c9SDave Chinner * Check all attribute bmap btree records and 134030f712c9SDave Chinner * any "older" data bmap btree records for a 134130f712c9SDave Chinner * set bit in the "extent flag" position. 134230f712c9SDave Chinner */ 134330f712c9SDave Chinner if (unlikely(xfs_check_nostate_extents(ifp, 134430f712c9SDave Chinner start, num_recs))) { 134530f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmap_read_extents(2)", 134630f712c9SDave Chinner XFS_ERRLEVEL_LOW, 134730f712c9SDave Chinner ip->i_mount); 134830f712c9SDave Chinner goto error0; 134930f712c9SDave Chinner } 135030f712c9SDave Chinner } 135130f712c9SDave Chinner xfs_trans_brelse(tp, bp); 135230f712c9SDave Chinner bno = nextbno; 135330f712c9SDave Chinner /* 135430f712c9SDave Chinner * If we've reached the end, stop. 135530f712c9SDave Chinner */ 135630f712c9SDave Chinner if (bno == NULLFSBLOCK) 135730f712c9SDave Chinner break; 135830f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 135930f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 136030f712c9SDave Chinner if (error) 136130f712c9SDave Chinner return error; 136230f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 136330f712c9SDave Chinner } 13645d829300SEric Sandeen ASSERT(i == xfs_iext_count(ifp)); 136530f712c9SDave Chinner ASSERT(i == XFS_IFORK_NEXTENTS(ip, whichfork)); 136630f712c9SDave Chinner XFS_BMAP_TRACE_EXLIST(ip, i, whichfork); 136730f712c9SDave Chinner return 0; 136830f712c9SDave Chinner error0: 136930f712c9SDave Chinner xfs_trans_brelse(tp, bp); 13702451337dSDave Chinner return -EFSCORRUPTED; 137130f712c9SDave Chinner } 137230f712c9SDave Chinner 137330f712c9SDave Chinner /* 137430f712c9SDave Chinner * Returns the file-relative block number of the first unused block(s) 137530f712c9SDave Chinner * in the file with at least "len" logically contiguous blocks free. 137630f712c9SDave Chinner * This is the lowest-address hole if the file has holes, else the first block 137730f712c9SDave Chinner * past the end of file. 137830f712c9SDave Chinner * Return 0 if the file is currently local (in-inode). 137930f712c9SDave Chinner */ 138030f712c9SDave Chinner int /* error */ 138130f712c9SDave Chinner xfs_bmap_first_unused( 138230f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 138330f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 138430f712c9SDave Chinner xfs_extlen_t len, /* size of hole to find */ 138530f712c9SDave Chinner xfs_fileoff_t *first_unused, /* unused block */ 138630f712c9SDave Chinner int whichfork) /* data or attr fork */ 138730f712c9SDave Chinner { 138830f712c9SDave Chinner int error; /* error return value */ 138930f712c9SDave Chinner int idx; /* extent record index */ 139030f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 139130f712c9SDave Chinner xfs_fileoff_t lastaddr; /* last block number seen */ 139230f712c9SDave Chinner xfs_fileoff_t lowest; /* lowest useful block */ 139330f712c9SDave Chinner xfs_fileoff_t max; /* starting useful block */ 139430f712c9SDave Chinner xfs_fileoff_t off; /* offset for this block */ 139530f712c9SDave Chinner xfs_extnum_t nextents; /* number of extent entries */ 139630f712c9SDave Chinner 139730f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE || 139830f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS || 139930f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 140030f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { 140130f712c9SDave Chinner *first_unused = 0; 140230f712c9SDave Chinner return 0; 140330f712c9SDave Chinner } 140430f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 140530f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 140630f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 140730f712c9SDave Chinner return error; 140830f712c9SDave Chinner lowest = *first_unused; 14095d829300SEric Sandeen nextents = xfs_iext_count(ifp); 141030f712c9SDave Chinner for (idx = 0, lastaddr = 0, max = lowest; idx < nextents; idx++) { 141130f712c9SDave Chinner xfs_bmbt_rec_host_t *ep = xfs_iext_get_ext(ifp, idx); 141230f712c9SDave Chinner off = xfs_bmbt_get_startoff(ep); 141330f712c9SDave Chinner /* 141430f712c9SDave Chinner * See if the hole before this extent will work. 141530f712c9SDave Chinner */ 141630f712c9SDave Chinner if (off >= lowest + len && off - max >= len) { 141730f712c9SDave Chinner *first_unused = max; 141830f712c9SDave Chinner return 0; 141930f712c9SDave Chinner } 142030f712c9SDave Chinner lastaddr = off + xfs_bmbt_get_blockcount(ep); 142130f712c9SDave Chinner max = XFS_FILEOFF_MAX(lastaddr, lowest); 142230f712c9SDave Chinner } 142330f712c9SDave Chinner *first_unused = max; 142430f712c9SDave Chinner return 0; 142530f712c9SDave Chinner } 142630f712c9SDave Chinner 142730f712c9SDave Chinner /* 142830f712c9SDave Chinner * Returns the file-relative block number of the last block - 1 before 142930f712c9SDave Chinner * last_block (input value) in the file. 143030f712c9SDave Chinner * This is not based on i_size, it is based on the extent records. 143130f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 143230f712c9SDave Chinner */ 143330f712c9SDave Chinner int /* error */ 143430f712c9SDave Chinner xfs_bmap_last_before( 143586685f7bSChristoph Hellwig struct xfs_trans *tp, /* transaction pointer */ 143686685f7bSChristoph Hellwig struct xfs_inode *ip, /* incore inode */ 143730f712c9SDave Chinner xfs_fileoff_t *last_block, /* last block */ 143830f712c9SDave Chinner int whichfork) /* data or attr fork */ 143930f712c9SDave Chinner { 144086685f7bSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 144186685f7bSChristoph Hellwig struct xfs_bmbt_irec got; 144286685f7bSChristoph Hellwig xfs_extnum_t idx; 144386685f7bSChristoph Hellwig int error; 144430f712c9SDave Chinner 144586685f7bSChristoph Hellwig switch (XFS_IFORK_FORMAT(ip, whichfork)) { 144686685f7bSChristoph Hellwig case XFS_DINODE_FMT_LOCAL: 144730f712c9SDave Chinner *last_block = 0; 144830f712c9SDave Chinner return 0; 144986685f7bSChristoph Hellwig case XFS_DINODE_FMT_BTREE: 145086685f7bSChristoph Hellwig case XFS_DINODE_FMT_EXTENTS: 145186685f7bSChristoph Hellwig break; 145286685f7bSChristoph Hellwig default: 145386685f7bSChristoph Hellwig return -EIO; 145430f712c9SDave Chinner } 145586685f7bSChristoph Hellwig 145686685f7bSChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 145786685f7bSChristoph Hellwig error = xfs_iread_extents(tp, ip, whichfork); 145886685f7bSChristoph Hellwig if (error) 145930f712c9SDave Chinner return error; 146030f712c9SDave Chinner } 146186685f7bSChristoph Hellwig 146286685f7bSChristoph Hellwig if (xfs_iext_lookup_extent(ip, ifp, *last_block - 1, &idx, &got)) { 146386685f7bSChristoph Hellwig if (got.br_startoff <= *last_block - 1) 146486685f7bSChristoph Hellwig return 0; 146586685f7bSChristoph Hellwig } 146686685f7bSChristoph Hellwig 146786685f7bSChristoph Hellwig if (xfs_iext_get_extent(ifp, idx - 1, &got)) { 146886685f7bSChristoph Hellwig *last_block = got.br_startoff + got.br_blockcount; 146986685f7bSChristoph Hellwig return 0; 147086685f7bSChristoph Hellwig } 147186685f7bSChristoph Hellwig 147286685f7bSChristoph Hellwig *last_block = 0; 147330f712c9SDave Chinner return 0; 147430f712c9SDave Chinner } 147530f712c9SDave Chinner 147630f712c9SDave Chinner int 147730f712c9SDave Chinner xfs_bmap_last_extent( 147830f712c9SDave Chinner struct xfs_trans *tp, 147930f712c9SDave Chinner struct xfs_inode *ip, 148030f712c9SDave Chinner int whichfork, 148130f712c9SDave Chinner struct xfs_bmbt_irec *rec, 148230f712c9SDave Chinner int *is_empty) 148330f712c9SDave Chinner { 148430f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 148530f712c9SDave Chinner int error; 148630f712c9SDave Chinner int nextents; 148730f712c9SDave Chinner 148830f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 148930f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 149030f712c9SDave Chinner if (error) 149130f712c9SDave Chinner return error; 149230f712c9SDave Chinner } 149330f712c9SDave Chinner 14945d829300SEric Sandeen nextents = xfs_iext_count(ifp); 149530f712c9SDave Chinner if (nextents == 0) { 149630f712c9SDave Chinner *is_empty = 1; 149730f712c9SDave Chinner return 0; 149830f712c9SDave Chinner } 149930f712c9SDave Chinner 150030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, nextents - 1), rec); 150130f712c9SDave Chinner *is_empty = 0; 150230f712c9SDave Chinner return 0; 150330f712c9SDave Chinner } 150430f712c9SDave Chinner 150530f712c9SDave Chinner /* 150630f712c9SDave Chinner * Check the last inode extent to determine whether this allocation will result 150730f712c9SDave Chinner * in blocks being allocated at the end of the file. When we allocate new data 150830f712c9SDave Chinner * blocks at the end of the file which do not start at the previous data block, 150930f712c9SDave Chinner * we will try to align the new blocks at stripe unit boundaries. 151030f712c9SDave Chinner * 151130f712c9SDave Chinner * Returns 1 in bma->aeof if the file (fork) is empty as any new write will be 151230f712c9SDave Chinner * at, or past the EOF. 151330f712c9SDave Chinner */ 151430f712c9SDave Chinner STATIC int 151530f712c9SDave Chinner xfs_bmap_isaeof( 151630f712c9SDave Chinner struct xfs_bmalloca *bma, 151730f712c9SDave Chinner int whichfork) 151830f712c9SDave Chinner { 151930f712c9SDave Chinner struct xfs_bmbt_irec rec; 152030f712c9SDave Chinner int is_empty; 152130f712c9SDave Chinner int error; 152230f712c9SDave Chinner 152330f712c9SDave Chinner bma->aeof = 0; 152430f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, bma->ip, whichfork, &rec, 152530f712c9SDave Chinner &is_empty); 152630f712c9SDave Chinner if (error) 152730f712c9SDave Chinner return error; 152830f712c9SDave Chinner 152930f712c9SDave Chinner if (is_empty) { 153030f712c9SDave Chinner bma->aeof = 1; 153130f712c9SDave Chinner return 0; 153230f712c9SDave Chinner } 153330f712c9SDave Chinner 153430f712c9SDave Chinner /* 153530f712c9SDave Chinner * Check if we are allocation or past the last extent, or at least into 153630f712c9SDave Chinner * the last delayed allocated extent. 153730f712c9SDave Chinner */ 153830f712c9SDave Chinner bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount || 153930f712c9SDave Chinner (bma->offset >= rec.br_startoff && 154030f712c9SDave Chinner isnullstartblock(rec.br_startblock)); 154130f712c9SDave Chinner return 0; 154230f712c9SDave Chinner } 154330f712c9SDave Chinner 154430f712c9SDave Chinner /* 154530f712c9SDave Chinner * Returns the file-relative block number of the first block past eof in 154630f712c9SDave Chinner * the file. This is not based on i_size, it is based on the extent records. 154730f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 154830f712c9SDave Chinner */ 154930f712c9SDave Chinner int 155030f712c9SDave Chinner xfs_bmap_last_offset( 155130f712c9SDave Chinner struct xfs_inode *ip, 155230f712c9SDave Chinner xfs_fileoff_t *last_block, 155330f712c9SDave Chinner int whichfork) 155430f712c9SDave Chinner { 155530f712c9SDave Chinner struct xfs_bmbt_irec rec; 155630f712c9SDave Chinner int is_empty; 155730f712c9SDave Chinner int error; 155830f712c9SDave Chinner 155930f712c9SDave Chinner *last_block = 0; 156030f712c9SDave Chinner 156130f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) 156230f712c9SDave Chinner return 0; 156330f712c9SDave Chinner 156430f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && 156530f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 15662451337dSDave Chinner return -EIO; 156730f712c9SDave Chinner 156830f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, &is_empty); 156930f712c9SDave Chinner if (error || is_empty) 157030f712c9SDave Chinner return error; 157130f712c9SDave Chinner 157230f712c9SDave Chinner *last_block = rec.br_startoff + rec.br_blockcount; 157330f712c9SDave Chinner return 0; 157430f712c9SDave Chinner } 157530f712c9SDave Chinner 157630f712c9SDave Chinner /* 157730f712c9SDave Chinner * Returns whether the selected fork of the inode has exactly one 157830f712c9SDave Chinner * block or not. For the data fork we check this matches di_size, 157930f712c9SDave Chinner * implying the file's range is 0..bsize-1. 158030f712c9SDave Chinner */ 158130f712c9SDave Chinner int /* 1=>1 block, 0=>otherwise */ 158230f712c9SDave Chinner xfs_bmap_one_block( 158330f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 158430f712c9SDave Chinner int whichfork) /* data or attr fork */ 158530f712c9SDave Chinner { 158630f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* ptr to fork's extent */ 158730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 158830f712c9SDave Chinner int rval; /* return value */ 158930f712c9SDave Chinner xfs_bmbt_irec_t s; /* internal version of extent */ 159030f712c9SDave Chinner 159130f712c9SDave Chinner #ifndef DEBUG 159230f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) 159330f712c9SDave Chinner return XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize; 159430f712c9SDave Chinner #endif /* !DEBUG */ 159530f712c9SDave Chinner if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1) 159630f712c9SDave Chinner return 0; 159730f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 159830f712c9SDave Chinner return 0; 159930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 160030f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 160130f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, 0); 160230f712c9SDave Chinner xfs_bmbt_get_all(ep, &s); 160330f712c9SDave Chinner rval = s.br_startoff == 0 && s.br_blockcount == 1; 160430f712c9SDave Chinner if (rval && whichfork == XFS_DATA_FORK) 160530f712c9SDave Chinner ASSERT(XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize); 160630f712c9SDave Chinner return rval; 160730f712c9SDave Chinner } 160830f712c9SDave Chinner 160930f712c9SDave Chinner /* 161030f712c9SDave Chinner * Extent tree manipulation functions used during allocation. 161130f712c9SDave Chinner */ 161230f712c9SDave Chinner 161330f712c9SDave Chinner /* 161430f712c9SDave Chinner * Convert a delayed allocation to a real allocation. 161530f712c9SDave Chinner */ 161630f712c9SDave Chinner STATIC int /* error */ 161730f712c9SDave Chinner xfs_bmap_add_extent_delay_real( 161860b4984fSDarrick J. Wong struct xfs_bmalloca *bma, 161960b4984fSDarrick J. Wong int whichfork) 162030f712c9SDave Chinner { 162130f712c9SDave Chinner struct xfs_bmbt_irec *new = &bma->got; 162230f712c9SDave Chinner int diff; /* temp value */ 162330f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ 162430f712c9SDave Chinner int error; /* error return value */ 162530f712c9SDave Chinner int i; /* temp state */ 162630f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 162730f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 162830f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 162930f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 163030f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 163130f712c9SDave Chinner int state = 0;/* state bits, accessed thru macros */ 163230f712c9SDave Chinner xfs_filblks_t da_new; /* new count del alloc blocks used */ 163330f712c9SDave Chinner xfs_filblks_t da_old; /* old count del alloc blocks used */ 163430f712c9SDave Chinner xfs_filblks_t temp=0; /* value for da_new calculations */ 163530f712c9SDave Chinner xfs_filblks_t temp2=0;/* value for da_new calculations */ 163630f712c9SDave Chinner int tmp_rval; /* partial logging flags */ 1637c29aad41SEric Sandeen struct xfs_mount *mp; 163860b4984fSDarrick J. Wong xfs_extnum_t *nextents; 163930f712c9SDave Chinner 1640f1f96c49SEric Sandeen mp = bma->ip->i_mount; 16416d3eb1ecSDarrick J. Wong ifp = XFS_IFORK_PTR(bma->ip, whichfork); 164260b4984fSDarrick J. Wong ASSERT(whichfork != XFS_ATTR_FORK); 164360b4984fSDarrick J. Wong nextents = (whichfork == XFS_COW_FORK ? &bma->ip->i_cnextents : 164460b4984fSDarrick J. Wong &bma->ip->i_d.di_nextents); 164530f712c9SDave Chinner 164630f712c9SDave Chinner ASSERT(bma->idx >= 0); 16475d829300SEric Sandeen ASSERT(bma->idx <= xfs_iext_count(ifp)); 164830f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 164930f712c9SDave Chinner ASSERT(!bma->cur || 165030f712c9SDave Chinner (bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 165130f712c9SDave Chinner 1652ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 165330f712c9SDave Chinner 165430f712c9SDave Chinner #define LEFT r[0] 165530f712c9SDave Chinner #define RIGHT r[1] 165630f712c9SDave Chinner #define PREV r[2] 165730f712c9SDave Chinner 165860b4984fSDarrick J. Wong if (whichfork == XFS_COW_FORK) 165960b4984fSDarrick J. Wong state |= BMAP_COWFORK; 166060b4984fSDarrick J. Wong 166130f712c9SDave Chinner /* 166230f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 166330f712c9SDave Chinner */ 166430f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 166530f712c9SDave Chinner xfs_bmbt_get_all(ep, &PREV); 166630f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 166730f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 166830f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 166930f712c9SDave Chinner 167030f712c9SDave Chinner da_old = startblockval(PREV.br_startblock); 167130f712c9SDave Chinner da_new = 0; 167230f712c9SDave Chinner 167330f712c9SDave Chinner /* 167430f712c9SDave Chinner * Set flags determining what part of the previous delayed allocation 167530f712c9SDave Chinner * extent is being replaced by a real allocation. 167630f712c9SDave Chinner */ 167730f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 167830f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 167930f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 168030f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 168130f712c9SDave Chinner 168230f712c9SDave Chinner /* 168330f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 168430f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 168530f712c9SDave Chinner */ 168630f712c9SDave Chinner if (bma->idx > 0) { 168730f712c9SDave Chinner state |= BMAP_LEFT_VALID; 168830f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &LEFT); 168930f712c9SDave Chinner 169030f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 169130f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 169230f712c9SDave Chinner } 169330f712c9SDave Chinner 169430f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 169530f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 169630f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 169730f712c9SDave Chinner LEFT.br_state == new->br_state && 169830f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 169930f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 170030f712c9SDave Chinner 170130f712c9SDave Chinner /* 170230f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 170330f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 170430f712c9SDave Chinner * Also check for all-three-contiguous being too large. 170530f712c9SDave Chinner */ 17065d829300SEric Sandeen if (bma->idx < xfs_iext_count(ifp) - 1) { 170730f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 170830f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx + 1), &RIGHT); 170930f712c9SDave Chinner 171030f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 171130f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 171230f712c9SDave Chinner } 171330f712c9SDave Chinner 171430f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 171530f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 171630f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 171730f712c9SDave Chinner new->br_state == RIGHT.br_state && 171830f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 171930f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 172030f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 172130f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 172230f712c9SDave Chinner BMAP_RIGHT_FILLING) || 172330f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 172430f712c9SDave Chinner <= MAXEXTLEN)) 172530f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 172630f712c9SDave Chinner 172730f712c9SDave Chinner error = 0; 172830f712c9SDave Chinner /* 172930f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 173030f712c9SDave Chinner */ 173130f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 173230f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 173330f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 173430f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 173530f712c9SDave Chinner /* 173630f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 173730f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 173830f712c9SDave Chinner */ 173930f712c9SDave Chinner bma->idx--; 174030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 174130f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 174230f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 174330f712c9SDave Chinner RIGHT.br_blockcount); 174430f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 174530f712c9SDave Chinner 174630f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 2, state); 174760b4984fSDarrick J. Wong (*nextents)--; 174830f712c9SDave Chinner if (bma->cur == NULL) 174930f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 175030f712c9SDave Chinner else { 175130f712c9SDave Chinner rval = XFS_ILOG_CORE; 175230f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 175330f712c9SDave Chinner RIGHT.br_startblock, 175430f712c9SDave Chinner RIGHT.br_blockcount, &i); 175530f712c9SDave Chinner if (error) 175630f712c9SDave Chinner goto done; 1757c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 175830f712c9SDave Chinner error = xfs_btree_delete(bma->cur, &i); 175930f712c9SDave Chinner if (error) 176030f712c9SDave Chinner goto done; 1761c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 176230f712c9SDave Chinner error = xfs_btree_decrement(bma->cur, 0, &i); 176330f712c9SDave Chinner if (error) 176430f712c9SDave Chinner goto done; 1765c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 176630f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 176730f712c9SDave Chinner LEFT.br_startblock, 176830f712c9SDave Chinner LEFT.br_blockcount + 176930f712c9SDave Chinner PREV.br_blockcount + 177030f712c9SDave Chinner RIGHT.br_blockcount, LEFT.br_state); 177130f712c9SDave Chinner if (error) 177230f712c9SDave Chinner goto done; 177330f712c9SDave Chinner } 177430f712c9SDave Chinner break; 177530f712c9SDave Chinner 177630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 177730f712c9SDave Chinner /* 177830f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 177930f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 178030f712c9SDave Chinner */ 178130f712c9SDave Chinner bma->idx--; 178230f712c9SDave Chinner 178330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 178430f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 178530f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount); 178630f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 178730f712c9SDave Chinner 178830f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 178930f712c9SDave Chinner if (bma->cur == NULL) 179030f712c9SDave Chinner rval = XFS_ILOG_DEXT; 179130f712c9SDave Chinner else { 179230f712c9SDave Chinner rval = 0; 179330f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff, 179430f712c9SDave Chinner LEFT.br_startblock, LEFT.br_blockcount, 179530f712c9SDave Chinner &i); 179630f712c9SDave Chinner if (error) 179730f712c9SDave Chinner goto done; 1798c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 179930f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 180030f712c9SDave Chinner LEFT.br_startblock, 180130f712c9SDave Chinner LEFT.br_blockcount + 180230f712c9SDave Chinner PREV.br_blockcount, LEFT.br_state); 180330f712c9SDave Chinner if (error) 180430f712c9SDave Chinner goto done; 180530f712c9SDave Chinner } 180630f712c9SDave Chinner break; 180730f712c9SDave Chinner 180830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 180930f712c9SDave Chinner /* 181030f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 181130f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 181230f712c9SDave Chinner */ 181330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 181430f712c9SDave Chinner xfs_bmbt_set_startblock(ep, new->br_startblock); 181530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 181630f712c9SDave Chinner PREV.br_blockcount + RIGHT.br_blockcount); 181730f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 181830f712c9SDave Chinner 181930f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 182030f712c9SDave Chinner if (bma->cur == NULL) 182130f712c9SDave Chinner rval = XFS_ILOG_DEXT; 182230f712c9SDave Chinner else { 182330f712c9SDave Chinner rval = 0; 182430f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 182530f712c9SDave Chinner RIGHT.br_startblock, 182630f712c9SDave Chinner RIGHT.br_blockcount, &i); 182730f712c9SDave Chinner if (error) 182830f712c9SDave Chinner goto done; 1829c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 183030f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, PREV.br_startoff, 183130f712c9SDave Chinner new->br_startblock, 183230f712c9SDave Chinner PREV.br_blockcount + 183330f712c9SDave Chinner RIGHT.br_blockcount, PREV.br_state); 183430f712c9SDave Chinner if (error) 183530f712c9SDave Chinner goto done; 183630f712c9SDave Chinner } 183730f712c9SDave Chinner break; 183830f712c9SDave Chinner 183930f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 184030f712c9SDave Chinner /* 184130f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 184230f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 184330f712c9SDave Chinner * the new one. 184430f712c9SDave Chinner */ 184530f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 184630f712c9SDave Chinner xfs_bmbt_set_startblock(ep, new->br_startblock); 184730f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 184830f712c9SDave Chinner 184960b4984fSDarrick J. Wong (*nextents)++; 185030f712c9SDave Chinner if (bma->cur == NULL) 185130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 185230f712c9SDave Chinner else { 185330f712c9SDave Chinner rval = XFS_ILOG_CORE; 185430f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 185530f712c9SDave Chinner new->br_startblock, new->br_blockcount, 185630f712c9SDave Chinner &i); 185730f712c9SDave Chinner if (error) 185830f712c9SDave Chinner goto done; 1859c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 186030f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 186130f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 186230f712c9SDave Chinner if (error) 186330f712c9SDave Chinner goto done; 1864c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 186530f712c9SDave Chinner } 186630f712c9SDave Chinner break; 186730f712c9SDave Chinner 186830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 186930f712c9SDave Chinner /* 187030f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 187130f712c9SDave Chinner * The left neighbor is contiguous. 187230f712c9SDave Chinner */ 187330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx - 1, state, _THIS_IP_); 187430f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx - 1), 187530f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount); 187630f712c9SDave Chinner xfs_bmbt_set_startoff(ep, 187730f712c9SDave Chinner PREV.br_startoff + new->br_blockcount); 187830f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx - 1, state, _THIS_IP_); 187930f712c9SDave Chinner 188030f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 188130f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 188230f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 188330f712c9SDave Chinner if (bma->cur == NULL) 188430f712c9SDave Chinner rval = XFS_ILOG_DEXT; 188530f712c9SDave Chinner else { 188630f712c9SDave Chinner rval = 0; 188730f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, LEFT.br_startoff, 188830f712c9SDave Chinner LEFT.br_startblock, LEFT.br_blockcount, 188930f712c9SDave Chinner &i); 189030f712c9SDave Chinner if (error) 189130f712c9SDave Chinner goto done; 1892c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 189330f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, LEFT.br_startoff, 189430f712c9SDave Chinner LEFT.br_startblock, 189530f712c9SDave Chinner LEFT.br_blockcount + 189630f712c9SDave Chinner new->br_blockcount, 189730f712c9SDave Chinner LEFT.br_state); 189830f712c9SDave Chinner if (error) 189930f712c9SDave Chinner goto done; 190030f712c9SDave Chinner } 190130f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 190230f712c9SDave Chinner startblockval(PREV.br_startblock)); 190330f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 190430f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 190530f712c9SDave Chinner 190630f712c9SDave Chinner bma->idx--; 190730f712c9SDave Chinner break; 190830f712c9SDave Chinner 190930f712c9SDave Chinner case BMAP_LEFT_FILLING: 191030f712c9SDave Chinner /* 191130f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 191230f712c9SDave Chinner * The left neighbor is not contiguous. 191330f712c9SDave Chinner */ 191430f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 191530f712c9SDave Chinner xfs_bmbt_set_startoff(ep, new_endoff); 191630f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 191730f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 191830f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx, 1, new, state); 191960b4984fSDarrick J. Wong (*nextents)++; 192030f712c9SDave Chinner if (bma->cur == NULL) 192130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 192230f712c9SDave Chinner else { 192330f712c9SDave Chinner rval = XFS_ILOG_CORE; 192430f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 192530f712c9SDave Chinner new->br_startblock, new->br_blockcount, 192630f712c9SDave Chinner &i); 192730f712c9SDave Chinner if (error) 192830f712c9SDave Chinner goto done; 1929c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 193030f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 193130f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 193230f712c9SDave Chinner if (error) 193330f712c9SDave Chinner goto done; 1934c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 193530f712c9SDave Chinner } 193630f712c9SDave Chinner 19376d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 193830f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 19392c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, 19406d3eb1ecSDarrick J. Wong &bma->cur, 1, &tmp_rval, whichfork); 194130f712c9SDave Chinner rval |= tmp_rval; 194230f712c9SDave Chinner if (error) 194330f712c9SDave Chinner goto done; 194430f712c9SDave Chinner } 194530f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 194630f712c9SDave Chinner startblockval(PREV.br_startblock) - 194730f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 194830f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx + 1); 194930f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 195030f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 195130f712c9SDave Chinner break; 195230f712c9SDave Chinner 195330f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 195430f712c9SDave Chinner /* 195530f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 195630f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 195730f712c9SDave Chinner */ 195830f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 195930f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 196030f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 196130f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx + 1), 196230f712c9SDave Chinner new->br_startoff, new->br_startblock, 196330f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 196430f712c9SDave Chinner RIGHT.br_state); 196530f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 1, state, _THIS_IP_); 196630f712c9SDave Chinner if (bma->cur == NULL) 196730f712c9SDave Chinner rval = XFS_ILOG_DEXT; 196830f712c9SDave Chinner else { 196930f712c9SDave Chinner rval = 0; 197030f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, RIGHT.br_startoff, 197130f712c9SDave Chinner RIGHT.br_startblock, 197230f712c9SDave Chinner RIGHT.br_blockcount, &i); 197330f712c9SDave Chinner if (error) 197430f712c9SDave Chinner goto done; 1975c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 197630f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, new->br_startoff, 197730f712c9SDave Chinner new->br_startblock, 197830f712c9SDave Chinner new->br_blockcount + 197930f712c9SDave Chinner RIGHT.br_blockcount, 198030f712c9SDave Chinner RIGHT.br_state); 198130f712c9SDave Chinner if (error) 198230f712c9SDave Chinner goto done; 198330f712c9SDave Chinner } 198430f712c9SDave Chinner 198530f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 198630f712c9SDave Chinner startblockval(PREV.br_startblock)); 198730f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 198830f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 198930f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 199030f712c9SDave Chinner 199130f712c9SDave Chinner bma->idx++; 199230f712c9SDave Chinner break; 199330f712c9SDave Chinner 199430f712c9SDave Chinner case BMAP_RIGHT_FILLING: 199530f712c9SDave Chinner /* 199630f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 199730f712c9SDave Chinner * The right neighbor is not contiguous. 199830f712c9SDave Chinner */ 199930f712c9SDave Chinner temp = PREV.br_blockcount - new->br_blockcount; 200030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 200130f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 200230f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx + 1, 1, new, state); 200360b4984fSDarrick J. Wong (*nextents)++; 200430f712c9SDave Chinner if (bma->cur == NULL) 200530f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 200630f712c9SDave Chinner else { 200730f712c9SDave Chinner rval = XFS_ILOG_CORE; 200830f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 200930f712c9SDave Chinner new->br_startblock, new->br_blockcount, 201030f712c9SDave Chinner &i); 201130f712c9SDave Chinner if (error) 201230f712c9SDave Chinner goto done; 2013c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 201430f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 201530f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 201630f712c9SDave Chinner if (error) 201730f712c9SDave Chinner goto done; 2018c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 201930f712c9SDave Chinner } 202030f712c9SDave Chinner 20216d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 202230f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 20232c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 1, 20246d3eb1ecSDarrick J. Wong &tmp_rval, whichfork); 202530f712c9SDave Chinner rval |= tmp_rval; 202630f712c9SDave Chinner if (error) 202730f712c9SDave Chinner goto done; 202830f712c9SDave Chinner } 202930f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 203030f712c9SDave Chinner startblockval(PREV.br_startblock) - 203130f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 203230f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 203330f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock(da_new)); 203430f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 203530f712c9SDave Chinner 203630f712c9SDave Chinner bma->idx++; 203730f712c9SDave Chinner break; 203830f712c9SDave Chinner 203930f712c9SDave Chinner case 0: 204030f712c9SDave Chinner /* 204130f712c9SDave Chinner * Filling in the middle part of a previous delayed allocation. 204230f712c9SDave Chinner * Contiguity is impossible here. 204330f712c9SDave Chinner * This case is avoided almost all the time. 204430f712c9SDave Chinner * 204530f712c9SDave Chinner * We start with a delayed allocation: 204630f712c9SDave Chinner * 204730f712c9SDave Chinner * +ddddddddddddddddddddddddddddddddddddddddddddddddddddddd+ 204830f712c9SDave Chinner * PREV @ idx 204930f712c9SDave Chinner * 205030f712c9SDave Chinner * and we are allocating: 205130f712c9SDave Chinner * +rrrrrrrrrrrrrrrrr+ 205230f712c9SDave Chinner * new 205330f712c9SDave Chinner * 205430f712c9SDave Chinner * and we set it up for insertion as: 205530f712c9SDave Chinner * +ddddddddddddddddddd+rrrrrrrrrrrrrrrrr+ddddddddddddddddd+ 205630f712c9SDave Chinner * new 205730f712c9SDave Chinner * PREV @ idx LEFT RIGHT 205830f712c9SDave Chinner * inserted at idx + 1 205930f712c9SDave Chinner */ 206030f712c9SDave Chinner temp = new->br_startoff - PREV.br_startoff; 206130f712c9SDave Chinner temp2 = PREV.br_startoff + PREV.br_blockcount - new_endoff; 206230f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, 0, _THIS_IP_); 206330f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); /* truncate PREV */ 206430f712c9SDave Chinner LEFT = *new; 206530f712c9SDave Chinner RIGHT.br_state = PREV.br_state; 206630f712c9SDave Chinner RIGHT.br_startblock = nullstartblock( 206730f712c9SDave Chinner (int)xfs_bmap_worst_indlen(bma->ip, temp2)); 206830f712c9SDave Chinner RIGHT.br_startoff = new_endoff; 206930f712c9SDave Chinner RIGHT.br_blockcount = temp2; 207030f712c9SDave Chinner /* insert LEFT (r[0]) and RIGHT (r[1]) at the same time */ 207130f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx + 1, 2, &LEFT, state); 207260b4984fSDarrick J. Wong (*nextents)++; 207330f712c9SDave Chinner if (bma->cur == NULL) 207430f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 207530f712c9SDave Chinner else { 207630f712c9SDave Chinner rval = XFS_ILOG_CORE; 207730f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, new->br_startoff, 207830f712c9SDave Chinner new->br_startblock, new->br_blockcount, 207930f712c9SDave Chinner &i); 208030f712c9SDave Chinner if (error) 208130f712c9SDave Chinner goto done; 2082c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 208330f712c9SDave Chinner bma->cur->bc_rec.b.br_state = XFS_EXT_NORM; 208430f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 208530f712c9SDave Chinner if (error) 208630f712c9SDave Chinner goto done; 2087c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 208830f712c9SDave Chinner } 208930f712c9SDave Chinner 20906d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 209130f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 20922c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 20936d3eb1ecSDarrick J. Wong 1, &tmp_rval, whichfork); 209430f712c9SDave Chinner rval |= tmp_rval; 209530f712c9SDave Chinner if (error) 209630f712c9SDave Chinner goto done; 209730f712c9SDave Chinner } 209830f712c9SDave Chinner temp = xfs_bmap_worst_indlen(bma->ip, temp); 209930f712c9SDave Chinner temp2 = xfs_bmap_worst_indlen(bma->ip, temp2); 210030f712c9SDave Chinner diff = (int)(temp + temp2 - startblockval(PREV.br_startblock) - 210130f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 210230f712c9SDave Chinner if (diff > 0) { 21030d485adaSDave Chinner error = xfs_mod_fdblocks(bma->ip->i_mount, 21040d485adaSDave Chinner -((int64_t)diff), false); 210530f712c9SDave Chinner ASSERT(!error); 210630f712c9SDave Chinner if (error) 210730f712c9SDave Chinner goto done; 210830f712c9SDave Chinner } 210930f712c9SDave Chinner 211030f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, bma->idx); 211130f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 211230f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 211330f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx + 2, state, _THIS_IP_); 211430f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, bma->idx + 2), 211530f712c9SDave Chinner nullstartblock((int)temp2)); 211630f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx + 2, state, _THIS_IP_); 211730f712c9SDave Chinner 211830f712c9SDave Chinner bma->idx++; 211930f712c9SDave Chinner da_new = temp + temp2; 212030f712c9SDave Chinner break; 212130f712c9SDave Chinner 212230f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 212330f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 212430f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 212530f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 212630f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 212730f712c9SDave Chinner case BMAP_LEFT_CONTIG: 212830f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 212930f712c9SDave Chinner /* 213030f712c9SDave Chinner * These cases are all impossible. 213130f712c9SDave Chinner */ 213230f712c9SDave Chinner ASSERT(0); 213330f712c9SDave Chinner } 213430f712c9SDave Chinner 21359c194644SDarrick J. Wong /* add reverse mapping */ 21369c194644SDarrick J. Wong error = xfs_rmap_map_extent(mp, bma->dfops, bma->ip, whichfork, new); 21379c194644SDarrick J. Wong if (error) 21389c194644SDarrick J. Wong goto done; 21399c194644SDarrick J. Wong 214030f712c9SDave Chinner /* convert to a btree if necessary */ 21416d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 214230f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 214330f712c9SDave Chinner 214430f712c9SDave Chinner ASSERT(bma->cur == NULL); 214530f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 21462c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 21476d3eb1ecSDarrick J. Wong da_old > 0, &tmp_logflags, whichfork); 214830f712c9SDave Chinner bma->logflags |= tmp_logflags; 214930f712c9SDave Chinner if (error) 215030f712c9SDave Chinner goto done; 215130f712c9SDave Chinner } 215230f712c9SDave Chinner 215330f712c9SDave Chinner /* adjust for changes in reserved delayed indirect blocks */ 215430f712c9SDave Chinner if (da_old || da_new) { 215530f712c9SDave Chinner temp = da_new; 215630f712c9SDave Chinner if (bma->cur) 215730f712c9SDave Chinner temp += bma->cur->bc_private.b.allocated; 215830f712c9SDave Chinner ASSERT(temp <= da_old); 215930f712c9SDave Chinner if (temp < da_old) 21600d485adaSDave Chinner xfs_mod_fdblocks(bma->ip->i_mount, 21610d485adaSDave Chinner (int64_t)(da_old - temp), false); 216230f712c9SDave Chinner } 216330f712c9SDave Chinner 216430f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 216530f712c9SDave Chinner if (bma->cur) 216630f712c9SDave Chinner bma->cur->bc_private.b.allocated = 0; 216730f712c9SDave Chinner 21686d3eb1ecSDarrick J. Wong xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); 216930f712c9SDave Chinner done: 217060b4984fSDarrick J. Wong if (whichfork != XFS_COW_FORK) 217130f712c9SDave Chinner bma->logflags |= rval; 217230f712c9SDave Chinner return error; 217330f712c9SDave Chinner #undef LEFT 217430f712c9SDave Chinner #undef RIGHT 217530f712c9SDave Chinner #undef PREV 217630f712c9SDave Chinner } 217730f712c9SDave Chinner 217830f712c9SDave Chinner /* 217930f712c9SDave Chinner * Convert an unwritten allocation to a real allocation or vice versa. 218030f712c9SDave Chinner */ 218130f712c9SDave Chinner STATIC int /* error */ 218230f712c9SDave Chinner xfs_bmap_add_extent_unwritten_real( 218330f712c9SDave Chinner struct xfs_trans *tp, 218430f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 218530f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/insert */ 218630f712c9SDave Chinner xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ 218730f712c9SDave Chinner xfs_bmbt_irec_t *new, /* new data to add to file extents */ 218830f712c9SDave Chinner xfs_fsblock_t *first, /* pointer to firstblock variable */ 21892c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* list of extents to be freed */ 219030f712c9SDave Chinner int *logflagsp) /* inode logging flags */ 219130f712c9SDave Chinner { 219230f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 219330f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* extent entry for idx */ 219430f712c9SDave Chinner int error; /* error return value */ 219530f712c9SDave Chinner int i; /* temp state */ 219630f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 219730f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 219830f712c9SDave Chinner xfs_exntst_t newext; /* new extent state */ 219930f712c9SDave Chinner xfs_exntst_t oldext; /* old extent state */ 220030f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 220130f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 220230f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 220330f712c9SDave Chinner int state = 0;/* state bits, accessed thru macros */ 2204c29aad41SEric Sandeen struct xfs_mount *mp = tp->t_mountp; 220530f712c9SDave Chinner 220630f712c9SDave Chinner *logflagsp = 0; 220730f712c9SDave Chinner 220830f712c9SDave Chinner cur = *curp; 220930f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, XFS_DATA_FORK); 221030f712c9SDave Chinner 221130f712c9SDave Chinner ASSERT(*idx >= 0); 22125d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 221330f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 221430f712c9SDave Chinner 2215ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 221630f712c9SDave Chinner 221730f712c9SDave Chinner #define LEFT r[0] 221830f712c9SDave Chinner #define RIGHT r[1] 221930f712c9SDave Chinner #define PREV r[2] 222030f712c9SDave Chinner 222130f712c9SDave Chinner /* 222230f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 222330f712c9SDave Chinner */ 222430f712c9SDave Chinner error = 0; 222530f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, *idx); 222630f712c9SDave Chinner xfs_bmbt_get_all(ep, &PREV); 222730f712c9SDave Chinner newext = new->br_state; 222830f712c9SDave Chinner oldext = (newext == XFS_EXT_UNWRITTEN) ? 222930f712c9SDave Chinner XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 223030f712c9SDave Chinner ASSERT(PREV.br_state == oldext); 223130f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 223230f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 223330f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 223430f712c9SDave Chinner 223530f712c9SDave Chinner /* 223630f712c9SDave Chinner * Set flags determining what part of the previous oldext allocation 223730f712c9SDave Chinner * extent is being replaced by a newext allocation. 223830f712c9SDave Chinner */ 223930f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 224030f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 224130f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 224230f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 224330f712c9SDave Chinner 224430f712c9SDave Chinner /* 224530f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 224630f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 224730f712c9SDave Chinner */ 224830f712c9SDave Chinner if (*idx > 0) { 224930f712c9SDave Chinner state |= BMAP_LEFT_VALID; 225030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &LEFT); 225130f712c9SDave Chinner 225230f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 225330f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 225430f712c9SDave Chinner } 225530f712c9SDave Chinner 225630f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 225730f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 225830f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 225930f712c9SDave Chinner LEFT.br_state == newext && 226030f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 226130f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 226230f712c9SDave Chinner 226330f712c9SDave Chinner /* 226430f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 226530f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 226630f712c9SDave Chinner * Also check for all-three-contiguous being too large. 226730f712c9SDave Chinner */ 22685d829300SEric Sandeen if (*idx < xfs_iext_count(&ip->i_df) - 1) { 226930f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 227030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx + 1), &RIGHT); 227130f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 227230f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 227330f712c9SDave Chinner } 227430f712c9SDave Chinner 227530f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 227630f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 227730f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 227830f712c9SDave Chinner newext == RIGHT.br_state && 227930f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 228030f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 228130f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 228230f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 228330f712c9SDave Chinner BMAP_RIGHT_FILLING) || 228430f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 228530f712c9SDave Chinner <= MAXEXTLEN)) 228630f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 228730f712c9SDave Chinner 228830f712c9SDave Chinner /* 228930f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 229030f712c9SDave Chinner */ 229130f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 229230f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 229330f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 229430f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 229530f712c9SDave Chinner /* 229630f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 229730f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 229830f712c9SDave Chinner */ 229930f712c9SDave Chinner --*idx; 230030f712c9SDave Chinner 230130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 230230f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 230330f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 230430f712c9SDave Chinner RIGHT.br_blockcount); 230530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 230630f712c9SDave Chinner 230730f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 2, state); 230830f712c9SDave Chinner ip->i_d.di_nextents -= 2; 230930f712c9SDave Chinner if (cur == NULL) 231030f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 231130f712c9SDave Chinner else { 231230f712c9SDave Chinner rval = XFS_ILOG_CORE; 231330f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, 231430f712c9SDave Chinner RIGHT.br_startblock, 231530f712c9SDave Chinner RIGHT.br_blockcount, &i))) 231630f712c9SDave Chinner goto done; 2317c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 231830f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 231930f712c9SDave Chinner goto done; 2320c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 232130f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 232230f712c9SDave Chinner goto done; 2323c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 232430f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 232530f712c9SDave Chinner goto done; 2326c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 232730f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 232830f712c9SDave Chinner goto done; 2329c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 233030f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, 233130f712c9SDave Chinner LEFT.br_startblock, 233230f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount + 233330f712c9SDave Chinner RIGHT.br_blockcount, LEFT.br_state))) 233430f712c9SDave Chinner goto done; 233530f712c9SDave Chinner } 233630f712c9SDave Chinner break; 233730f712c9SDave Chinner 233830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 233930f712c9SDave Chinner /* 234030f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 234130f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 234230f712c9SDave Chinner */ 234330f712c9SDave Chinner --*idx; 234430f712c9SDave Chinner 234530f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 234630f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), 234730f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount); 234830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 234930f712c9SDave Chinner 235030f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 235130f712c9SDave Chinner ip->i_d.di_nextents--; 235230f712c9SDave Chinner if (cur == NULL) 235330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 235430f712c9SDave Chinner else { 235530f712c9SDave Chinner rval = XFS_ILOG_CORE; 235630f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 235730f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 235830f712c9SDave Chinner &i))) 235930f712c9SDave Chinner goto done; 2360c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 236130f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 236230f712c9SDave Chinner goto done; 2363c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 236430f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 236530f712c9SDave Chinner goto done; 2366c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 236730f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, LEFT.br_startoff, 236830f712c9SDave Chinner LEFT.br_startblock, 236930f712c9SDave Chinner LEFT.br_blockcount + PREV.br_blockcount, 237030f712c9SDave Chinner LEFT.br_state))) 237130f712c9SDave Chinner goto done; 237230f712c9SDave Chinner } 237330f712c9SDave Chinner break; 237430f712c9SDave Chinner 237530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 237630f712c9SDave Chinner /* 237730f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 237830f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 237930f712c9SDave Chinner */ 238030f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 238130f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 238230f712c9SDave Chinner PREV.br_blockcount + RIGHT.br_blockcount); 238330f712c9SDave Chinner xfs_bmbt_set_state(ep, newext); 238430f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 238530f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 238630f712c9SDave Chinner ip->i_d.di_nextents--; 238730f712c9SDave Chinner if (cur == NULL) 238830f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 238930f712c9SDave Chinner else { 239030f712c9SDave Chinner rval = XFS_ILOG_CORE; 239130f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, RIGHT.br_startoff, 239230f712c9SDave Chinner RIGHT.br_startblock, 239330f712c9SDave Chinner RIGHT.br_blockcount, &i))) 239430f712c9SDave Chinner goto done; 2395c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 239630f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 239730f712c9SDave Chinner goto done; 2398c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 239930f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 240030f712c9SDave Chinner goto done; 2401c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 240230f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 240330f712c9SDave Chinner new->br_startblock, 240430f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 240530f712c9SDave Chinner newext))) 240630f712c9SDave Chinner goto done; 240730f712c9SDave Chinner } 240830f712c9SDave Chinner break; 240930f712c9SDave Chinner 241030f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 241130f712c9SDave Chinner /* 241230f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 241330f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 241430f712c9SDave Chinner * the new one. 241530f712c9SDave Chinner */ 241630f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 241730f712c9SDave Chinner xfs_bmbt_set_state(ep, newext); 241830f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 241930f712c9SDave Chinner 242030f712c9SDave Chinner if (cur == NULL) 242130f712c9SDave Chinner rval = XFS_ILOG_DEXT; 242230f712c9SDave Chinner else { 242330f712c9SDave Chinner rval = 0; 242430f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 242530f712c9SDave Chinner new->br_startblock, new->br_blockcount, 242630f712c9SDave Chinner &i))) 242730f712c9SDave Chinner goto done; 2428c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 242930f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 243030f712c9SDave Chinner new->br_startblock, new->br_blockcount, 243130f712c9SDave Chinner newext))) 243230f712c9SDave Chinner goto done; 243330f712c9SDave Chinner } 243430f712c9SDave Chinner break; 243530f712c9SDave Chinner 243630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 243730f712c9SDave Chinner /* 243830f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 243930f712c9SDave Chinner * The left neighbor is contiguous. 244030f712c9SDave Chinner */ 244130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx - 1, state, _THIS_IP_); 244230f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx - 1), 244330f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount); 244430f712c9SDave Chinner xfs_bmbt_set_startoff(ep, 244530f712c9SDave Chinner PREV.br_startoff + new->br_blockcount); 244630f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx - 1, state, _THIS_IP_); 244730f712c9SDave Chinner 244830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 244930f712c9SDave Chinner xfs_bmbt_set_startblock(ep, 245030f712c9SDave Chinner new->br_startblock + new->br_blockcount); 245130f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 245230f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 245330f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 245430f712c9SDave Chinner 245530f712c9SDave Chinner --*idx; 245630f712c9SDave Chinner 245730f712c9SDave Chinner if (cur == NULL) 245830f712c9SDave Chinner rval = XFS_ILOG_DEXT; 245930f712c9SDave Chinner else { 246030f712c9SDave Chinner rval = 0; 246130f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 246230f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 246330f712c9SDave Chinner &i))) 246430f712c9SDave Chinner goto done; 2465c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 246630f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 246730f712c9SDave Chinner PREV.br_startoff + new->br_blockcount, 246830f712c9SDave Chinner PREV.br_startblock + new->br_blockcount, 246930f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 247030f712c9SDave Chinner oldext))) 247130f712c9SDave Chinner goto done; 247230f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 247330f712c9SDave Chinner goto done; 247430f712c9SDave Chinner error = xfs_bmbt_update(cur, LEFT.br_startoff, 247530f712c9SDave Chinner LEFT.br_startblock, 247630f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount, 247730f712c9SDave Chinner LEFT.br_state); 247830f712c9SDave Chinner if (error) 247930f712c9SDave Chinner goto done; 248030f712c9SDave Chinner } 248130f712c9SDave Chinner break; 248230f712c9SDave Chinner 248330f712c9SDave Chinner case BMAP_LEFT_FILLING: 248430f712c9SDave Chinner /* 248530f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 248630f712c9SDave Chinner * The left neighbor is not contiguous. 248730f712c9SDave Chinner */ 248830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 248930f712c9SDave Chinner ASSERT(ep && xfs_bmbt_get_state(ep) == oldext); 249030f712c9SDave Chinner xfs_bmbt_set_startoff(ep, new_endoff); 249130f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 249230f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 249330f712c9SDave Chinner xfs_bmbt_set_startblock(ep, 249430f712c9SDave Chinner new->br_startblock + new->br_blockcount); 249530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 249630f712c9SDave Chinner 249730f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 249830f712c9SDave Chinner ip->i_d.di_nextents++; 249930f712c9SDave Chinner if (cur == NULL) 250030f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 250130f712c9SDave Chinner else { 250230f712c9SDave Chinner rval = XFS_ILOG_CORE; 250330f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 250430f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 250530f712c9SDave Chinner &i))) 250630f712c9SDave Chinner goto done; 2507c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 250830f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 250930f712c9SDave Chinner PREV.br_startoff + new->br_blockcount, 251030f712c9SDave Chinner PREV.br_startblock + new->br_blockcount, 251130f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 251230f712c9SDave Chinner oldext))) 251330f712c9SDave Chinner goto done; 251430f712c9SDave Chinner cur->bc_rec.b = *new; 251530f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 251630f712c9SDave Chinner goto done; 2517c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 251830f712c9SDave Chinner } 251930f712c9SDave Chinner break; 252030f712c9SDave Chinner 252130f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 252230f712c9SDave Chinner /* 252330f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 252430f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 252530f712c9SDave Chinner */ 252630f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 252730f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 252830f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 252930f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 253030f712c9SDave Chinner 253130f712c9SDave Chinner ++*idx; 253230f712c9SDave Chinner 253330f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 253430f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 253530f712c9SDave Chinner new->br_startoff, new->br_startblock, 253630f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, newext); 253730f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 253830f712c9SDave Chinner 253930f712c9SDave Chinner if (cur == NULL) 254030f712c9SDave Chinner rval = XFS_ILOG_DEXT; 254130f712c9SDave Chinner else { 254230f712c9SDave Chinner rval = 0; 254330f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 254430f712c9SDave Chinner PREV.br_startblock, 254530f712c9SDave Chinner PREV.br_blockcount, &i))) 254630f712c9SDave Chinner goto done; 2547c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 254830f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, PREV.br_startoff, 254930f712c9SDave Chinner PREV.br_startblock, 255030f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 255130f712c9SDave Chinner oldext))) 255230f712c9SDave Chinner goto done; 255330f712c9SDave Chinner if ((error = xfs_btree_increment(cur, 0, &i))) 255430f712c9SDave Chinner goto done; 255530f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, new->br_startoff, 255630f712c9SDave Chinner new->br_startblock, 255730f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount, 255830f712c9SDave Chinner newext))) 255930f712c9SDave Chinner goto done; 256030f712c9SDave Chinner } 256130f712c9SDave Chinner break; 256230f712c9SDave Chinner 256330f712c9SDave Chinner case BMAP_RIGHT_FILLING: 256430f712c9SDave Chinner /* 256530f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 256630f712c9SDave Chinner * The right neighbor is not contiguous. 256730f712c9SDave Chinner */ 256830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 256930f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 257030f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount); 257130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 257230f712c9SDave Chinner 257330f712c9SDave Chinner ++*idx; 257430f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 257530f712c9SDave Chinner 257630f712c9SDave Chinner ip->i_d.di_nextents++; 257730f712c9SDave Chinner if (cur == NULL) 257830f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 257930f712c9SDave Chinner else { 258030f712c9SDave Chinner rval = XFS_ILOG_CORE; 258130f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 258230f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 258330f712c9SDave Chinner &i))) 258430f712c9SDave Chinner goto done; 2585c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 258630f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, PREV.br_startoff, 258730f712c9SDave Chinner PREV.br_startblock, 258830f712c9SDave Chinner PREV.br_blockcount - new->br_blockcount, 258930f712c9SDave Chinner oldext))) 259030f712c9SDave Chinner goto done; 259130f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 259230f712c9SDave Chinner new->br_startblock, new->br_blockcount, 259330f712c9SDave Chinner &i))) 259430f712c9SDave Chinner goto done; 2595c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 259630f712c9SDave Chinner cur->bc_rec.b.br_state = XFS_EXT_NORM; 259730f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 259830f712c9SDave Chinner goto done; 2599c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 260030f712c9SDave Chinner } 260130f712c9SDave Chinner break; 260230f712c9SDave Chinner 260330f712c9SDave Chinner case 0: 260430f712c9SDave Chinner /* 260530f712c9SDave Chinner * Setting the middle part of a previous oldext extent to 260630f712c9SDave Chinner * newext. Contiguity is impossible here. 260730f712c9SDave Chinner * One extent becomes three extents. 260830f712c9SDave Chinner */ 260930f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 261030f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 261130f712c9SDave Chinner new->br_startoff - PREV.br_startoff); 261230f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 261330f712c9SDave Chinner 261430f712c9SDave Chinner r[0] = *new; 261530f712c9SDave Chinner r[1].br_startoff = new_endoff; 261630f712c9SDave Chinner r[1].br_blockcount = 261730f712c9SDave Chinner PREV.br_startoff + PREV.br_blockcount - new_endoff; 261830f712c9SDave Chinner r[1].br_startblock = new->br_startblock + new->br_blockcount; 261930f712c9SDave Chinner r[1].br_state = oldext; 262030f712c9SDave Chinner 262130f712c9SDave Chinner ++*idx; 262230f712c9SDave Chinner xfs_iext_insert(ip, *idx, 2, &r[0], state); 262330f712c9SDave Chinner 262430f712c9SDave Chinner ip->i_d.di_nextents += 2; 262530f712c9SDave Chinner if (cur == NULL) 262630f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 262730f712c9SDave Chinner else { 262830f712c9SDave Chinner rval = XFS_ILOG_CORE; 262930f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, PREV.br_startoff, 263030f712c9SDave Chinner PREV.br_startblock, PREV.br_blockcount, 263130f712c9SDave Chinner &i))) 263230f712c9SDave Chinner goto done; 2633c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 263430f712c9SDave Chinner /* new right extent - oldext */ 263530f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, r[1].br_startoff, 263630f712c9SDave Chinner r[1].br_startblock, r[1].br_blockcount, 263730f712c9SDave Chinner r[1].br_state))) 263830f712c9SDave Chinner goto done; 263930f712c9SDave Chinner /* new left extent - oldext */ 264030f712c9SDave Chinner cur->bc_rec.b = PREV; 264130f712c9SDave Chinner cur->bc_rec.b.br_blockcount = 264230f712c9SDave Chinner new->br_startoff - PREV.br_startoff; 264330f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 264430f712c9SDave Chinner goto done; 2645c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 264630f712c9SDave Chinner /* 264730f712c9SDave Chinner * Reset the cursor to the position of the new extent 264830f712c9SDave Chinner * we are about to insert as we can't trust it after 264930f712c9SDave Chinner * the previous insert. 265030f712c9SDave Chinner */ 265130f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, new->br_startoff, 265230f712c9SDave Chinner new->br_startblock, new->br_blockcount, 265330f712c9SDave Chinner &i))) 265430f712c9SDave Chinner goto done; 2655c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 265630f712c9SDave Chinner /* new middle extent - newext */ 265730f712c9SDave Chinner cur->bc_rec.b.br_state = new->br_state; 265830f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 265930f712c9SDave Chinner goto done; 2660c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 266130f712c9SDave Chinner } 266230f712c9SDave Chinner break; 266330f712c9SDave Chinner 266430f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 266530f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 266630f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 266730f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 266830f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 266930f712c9SDave Chinner case BMAP_LEFT_CONTIG: 267030f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 267130f712c9SDave Chinner /* 267230f712c9SDave Chinner * These cases are all impossible. 267330f712c9SDave Chinner */ 267430f712c9SDave Chinner ASSERT(0); 267530f712c9SDave Chinner } 267630f712c9SDave Chinner 26779c194644SDarrick J. Wong /* update reverse mappings */ 26789c194644SDarrick J. Wong error = xfs_rmap_convert_extent(mp, dfops, ip, XFS_DATA_FORK, new); 26799c194644SDarrick J. Wong if (error) 26809c194644SDarrick J. Wong goto done; 26819c194644SDarrick J. Wong 268230f712c9SDave Chinner /* convert to a btree if necessary */ 268330f712c9SDave Chinner if (xfs_bmap_needs_btree(ip, XFS_DATA_FORK)) { 268430f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 268530f712c9SDave Chinner 268630f712c9SDave Chinner ASSERT(cur == NULL); 26872c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, first, dfops, &cur, 268830f712c9SDave Chinner 0, &tmp_logflags, XFS_DATA_FORK); 268930f712c9SDave Chinner *logflagsp |= tmp_logflags; 269030f712c9SDave Chinner if (error) 269130f712c9SDave Chinner goto done; 269230f712c9SDave Chinner } 269330f712c9SDave Chinner 269430f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 269530f712c9SDave Chinner if (cur) { 269630f712c9SDave Chinner cur->bc_private.b.allocated = 0; 269730f712c9SDave Chinner *curp = cur; 269830f712c9SDave Chinner } 269930f712c9SDave Chinner 270030f712c9SDave Chinner xfs_bmap_check_leaf_extents(*curp, ip, XFS_DATA_FORK); 270130f712c9SDave Chinner done: 270230f712c9SDave Chinner *logflagsp |= rval; 270330f712c9SDave Chinner return error; 270430f712c9SDave Chinner #undef LEFT 270530f712c9SDave Chinner #undef RIGHT 270630f712c9SDave Chinner #undef PREV 270730f712c9SDave Chinner } 270830f712c9SDave Chinner 270930f712c9SDave Chinner /* 271030f712c9SDave Chinner * Convert a hole to a delayed allocation. 271130f712c9SDave Chinner */ 271230f712c9SDave Chinner STATIC void 271330f712c9SDave Chinner xfs_bmap_add_extent_hole_delay( 271430f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 2715be51f811SDarrick J. Wong int whichfork, 271630f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/insert */ 271730f712c9SDave Chinner xfs_bmbt_irec_t *new) /* new data to add to file extents */ 271830f712c9SDave Chinner { 271930f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 272030f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 272130f712c9SDave Chinner xfs_filblks_t newlen=0; /* new indirect size */ 272230f712c9SDave Chinner xfs_filblks_t oldlen=0; /* old indirect size */ 272330f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 272430f712c9SDave Chinner int state; /* state bits, accessed thru macros */ 272530f712c9SDave Chinner xfs_filblks_t temp=0; /* temp for indirect calculations */ 272630f712c9SDave Chinner 2727be51f811SDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 272830f712c9SDave Chinner state = 0; 2729be51f811SDarrick J. Wong if (whichfork == XFS_COW_FORK) 2730be51f811SDarrick J. Wong state |= BMAP_COWFORK; 273130f712c9SDave Chinner ASSERT(isnullstartblock(new->br_startblock)); 273230f712c9SDave Chinner 273330f712c9SDave Chinner /* 273430f712c9SDave Chinner * Check and set flags if this segment has a left neighbor 273530f712c9SDave Chinner */ 273630f712c9SDave Chinner if (*idx > 0) { 273730f712c9SDave Chinner state |= BMAP_LEFT_VALID; 273830f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx - 1), &left); 273930f712c9SDave Chinner 274030f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 274130f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 274230f712c9SDave Chinner } 274330f712c9SDave Chinner 274430f712c9SDave Chinner /* 274530f712c9SDave Chinner * Check and set flags if the current (right) segment exists. 274630f712c9SDave Chinner * If it doesn't exist, we're converting the hole at end-of-file. 274730f712c9SDave Chinner */ 27485d829300SEric Sandeen if (*idx < xfs_iext_count(ifp)) { 274930f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 275030f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *idx), &right); 275130f712c9SDave Chinner 275230f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 275330f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 275430f712c9SDave Chinner } 275530f712c9SDave Chinner 275630f712c9SDave Chinner /* 275730f712c9SDave Chinner * Set contiguity flags on the left and right neighbors. 275830f712c9SDave Chinner * Don't let extents get too large, even if the pieces are contiguous. 275930f712c9SDave Chinner */ 276030f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) && 276130f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 276230f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 276330f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 276430f712c9SDave Chinner 276530f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) && 276630f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 276730f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 276830f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 276930f712c9SDave Chinner (left.br_blockcount + new->br_blockcount + 277030f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN))) 277130f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 277230f712c9SDave Chinner 277330f712c9SDave Chinner /* 277430f712c9SDave Chinner * Switch out based on the contiguity flags. 277530f712c9SDave Chinner */ 277630f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 277730f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 277830f712c9SDave Chinner /* 277930f712c9SDave Chinner * New allocation is contiguous with delayed allocations 278030f712c9SDave Chinner * on the left and on the right. 278130f712c9SDave Chinner * Merge all three into a single extent record. 278230f712c9SDave Chinner */ 278330f712c9SDave Chinner --*idx; 278430f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount + 278530f712c9SDave Chinner right.br_blockcount; 278630f712c9SDave Chinner 278730f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 278830f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp); 278930f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 279030f712c9SDave Chinner startblockval(new->br_startblock) + 279130f712c9SDave Chinner startblockval(right.br_startblock); 279230f712c9SDave Chinner newlen = xfs_bmap_worst_indlen(ip, temp); 279330f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx), 279430f712c9SDave Chinner nullstartblock((int)newlen)); 279530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 279630f712c9SDave Chinner 279730f712c9SDave Chinner xfs_iext_remove(ip, *idx + 1, 1, state); 279830f712c9SDave Chinner break; 279930f712c9SDave Chinner 280030f712c9SDave Chinner case BMAP_LEFT_CONTIG: 280130f712c9SDave Chinner /* 280230f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 280330f712c9SDave Chinner * on the left. 280430f712c9SDave Chinner * Merge the new allocation with the left neighbor. 280530f712c9SDave Chinner */ 280630f712c9SDave Chinner --*idx; 280730f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount; 280830f712c9SDave Chinner 280930f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 281030f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, *idx), temp); 281130f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 281230f712c9SDave Chinner startblockval(new->br_startblock); 281330f712c9SDave Chinner newlen = xfs_bmap_worst_indlen(ip, temp); 281430f712c9SDave Chinner xfs_bmbt_set_startblock(xfs_iext_get_ext(ifp, *idx), 281530f712c9SDave Chinner nullstartblock((int)newlen)); 281630f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 281730f712c9SDave Chinner break; 281830f712c9SDave Chinner 281930f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 282030f712c9SDave Chinner /* 282130f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 282230f712c9SDave Chinner * on the right. 282330f712c9SDave Chinner * Merge the new allocation with the right neighbor. 282430f712c9SDave Chinner */ 282530f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 282630f712c9SDave Chinner temp = new->br_blockcount + right.br_blockcount; 282730f712c9SDave Chinner oldlen = startblockval(new->br_startblock) + 282830f712c9SDave Chinner startblockval(right.br_startblock); 282930f712c9SDave Chinner newlen = xfs_bmap_worst_indlen(ip, temp); 283030f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, *idx), 283130f712c9SDave Chinner new->br_startoff, 283230f712c9SDave Chinner nullstartblock((int)newlen), temp, right.br_state); 283330f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 283430f712c9SDave Chinner break; 283530f712c9SDave Chinner 283630f712c9SDave Chinner case 0: 283730f712c9SDave Chinner /* 283830f712c9SDave Chinner * New allocation is not contiguous with another 283930f712c9SDave Chinner * delayed allocation. 284030f712c9SDave Chinner * Insert a new entry. 284130f712c9SDave Chinner */ 284230f712c9SDave Chinner oldlen = newlen = 0; 284330f712c9SDave Chinner xfs_iext_insert(ip, *idx, 1, new, state); 284430f712c9SDave Chinner break; 284530f712c9SDave Chinner } 284630f712c9SDave Chinner if (oldlen != newlen) { 284730f712c9SDave Chinner ASSERT(oldlen > newlen); 28480d485adaSDave Chinner xfs_mod_fdblocks(ip->i_mount, (int64_t)(oldlen - newlen), 28490d485adaSDave Chinner false); 285030f712c9SDave Chinner /* 285130f712c9SDave Chinner * Nothing to do for disk quota accounting here. 285230f712c9SDave Chinner */ 285330f712c9SDave Chinner } 285430f712c9SDave Chinner } 285530f712c9SDave Chinner 285630f712c9SDave Chinner /* 285730f712c9SDave Chinner * Convert a hole to a real allocation. 285830f712c9SDave Chinner */ 285930f712c9SDave Chinner STATIC int /* error */ 286030f712c9SDave Chinner xfs_bmap_add_extent_hole_real( 286130f712c9SDave Chinner struct xfs_bmalloca *bma, 286230f712c9SDave Chinner int whichfork) 286330f712c9SDave Chinner { 286430f712c9SDave Chinner struct xfs_bmbt_irec *new = &bma->got; 286530f712c9SDave Chinner int error; /* error return value */ 286630f712c9SDave Chinner int i; /* temp state */ 286730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 286830f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 286930f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 287030f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 287130f712c9SDave Chinner int state; /* state bits, accessed thru macros */ 2872c29aad41SEric Sandeen struct xfs_mount *mp; 287330f712c9SDave Chinner 2874f1f96c49SEric Sandeen mp = bma->ip->i_mount; 287530f712c9SDave Chinner ifp = XFS_IFORK_PTR(bma->ip, whichfork); 287630f712c9SDave Chinner 287730f712c9SDave Chinner ASSERT(bma->idx >= 0); 28785d829300SEric Sandeen ASSERT(bma->idx <= xfs_iext_count(ifp)); 287930f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 288030f712c9SDave Chinner ASSERT(!bma->cur || 288130f712c9SDave Chinner !(bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 28823993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 288330f712c9SDave Chinner 2884ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 288530f712c9SDave Chinner 288630f712c9SDave Chinner state = 0; 288730f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 288830f712c9SDave Chinner state |= BMAP_ATTRFORK; 288930f712c9SDave Chinner 289030f712c9SDave Chinner /* 289130f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 289230f712c9SDave Chinner */ 289330f712c9SDave Chinner if (bma->idx > 0) { 289430f712c9SDave Chinner state |= BMAP_LEFT_VALID; 289530f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), &left); 289630f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 289730f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 289830f712c9SDave Chinner } 289930f712c9SDave Chinner 290030f712c9SDave Chinner /* 290130f712c9SDave Chinner * Check and set flags if this segment has a current value. 290230f712c9SDave Chinner * Not true if we're inserting into the "hole" at eof. 290330f712c9SDave Chinner */ 29045d829300SEric Sandeen if (bma->idx < xfs_iext_count(ifp)) { 290530f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 290630f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &right); 290730f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 290830f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 290930f712c9SDave Chinner } 291030f712c9SDave Chinner 291130f712c9SDave Chinner /* 291230f712c9SDave Chinner * We're inserting a real allocation between "left" and "right". 291330f712c9SDave Chinner * Set the contiguity flags. Don't let extents get too large. 291430f712c9SDave Chinner */ 291530f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 291630f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 291730f712c9SDave Chinner left.br_startblock + left.br_blockcount == new->br_startblock && 291830f712c9SDave Chinner left.br_state == new->br_state && 291930f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 292030f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 292130f712c9SDave Chinner 292230f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 292330f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 292430f712c9SDave Chinner new->br_startblock + new->br_blockcount == right.br_startblock && 292530f712c9SDave Chinner new->br_state == right.br_state && 292630f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 292730f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 292830f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 292930f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN)) 293030f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 293130f712c9SDave Chinner 293230f712c9SDave Chinner error = 0; 293330f712c9SDave Chinner /* 293430f712c9SDave Chinner * Select which case we're in here, and implement it. 293530f712c9SDave Chinner */ 293630f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 293730f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 293830f712c9SDave Chinner /* 293930f712c9SDave Chinner * New allocation is contiguous with real allocations on the 294030f712c9SDave Chinner * left and on the right. 294130f712c9SDave Chinner * Merge all three into a single extent record. 294230f712c9SDave Chinner */ 294330f712c9SDave Chinner --bma->idx; 294430f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 294530f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 294630f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 294730f712c9SDave Chinner right.br_blockcount); 294830f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 294930f712c9SDave Chinner 295030f712c9SDave Chinner xfs_iext_remove(bma->ip, bma->idx + 1, 1, state); 295130f712c9SDave Chinner 295230f712c9SDave Chinner XFS_IFORK_NEXT_SET(bma->ip, whichfork, 295330f712c9SDave Chinner XFS_IFORK_NEXTENTS(bma->ip, whichfork) - 1); 295430f712c9SDave Chinner if (bma->cur == NULL) { 295530f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 295630f712c9SDave Chinner } else { 295730f712c9SDave Chinner rval = XFS_ILOG_CORE; 295830f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, right.br_startoff, 295930f712c9SDave Chinner right.br_startblock, right.br_blockcount, 296030f712c9SDave Chinner &i); 296130f712c9SDave Chinner if (error) 296230f712c9SDave Chinner goto done; 2963c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 296430f712c9SDave Chinner error = xfs_btree_delete(bma->cur, &i); 296530f712c9SDave Chinner if (error) 296630f712c9SDave Chinner goto done; 2967c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 296830f712c9SDave Chinner error = xfs_btree_decrement(bma->cur, 0, &i); 296930f712c9SDave Chinner if (error) 297030f712c9SDave Chinner goto done; 2971c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 297230f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, left.br_startoff, 297330f712c9SDave Chinner left.br_startblock, 297430f712c9SDave Chinner left.br_blockcount + 297530f712c9SDave Chinner new->br_blockcount + 297630f712c9SDave Chinner right.br_blockcount, 297730f712c9SDave Chinner left.br_state); 297830f712c9SDave Chinner if (error) 297930f712c9SDave Chinner goto done; 298030f712c9SDave Chinner } 298130f712c9SDave Chinner break; 298230f712c9SDave Chinner 298330f712c9SDave Chinner case BMAP_LEFT_CONTIG: 298430f712c9SDave Chinner /* 298530f712c9SDave Chinner * New allocation is contiguous with a real allocation 298630f712c9SDave Chinner * on the left. 298730f712c9SDave Chinner * Merge the new allocation with the left neighbor. 298830f712c9SDave Chinner */ 298930f712c9SDave Chinner --bma->idx; 299030f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 299130f712c9SDave Chinner xfs_bmbt_set_blockcount(xfs_iext_get_ext(ifp, bma->idx), 299230f712c9SDave Chinner left.br_blockcount + new->br_blockcount); 299330f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 299430f712c9SDave Chinner 299530f712c9SDave Chinner if (bma->cur == NULL) { 299630f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 299730f712c9SDave Chinner } else { 299830f712c9SDave Chinner rval = 0; 299930f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, left.br_startoff, 300030f712c9SDave Chinner left.br_startblock, left.br_blockcount, 300130f712c9SDave Chinner &i); 300230f712c9SDave Chinner if (error) 300330f712c9SDave Chinner goto done; 3004c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 300530f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, left.br_startoff, 300630f712c9SDave Chinner left.br_startblock, 300730f712c9SDave Chinner left.br_blockcount + 300830f712c9SDave Chinner new->br_blockcount, 300930f712c9SDave Chinner left.br_state); 301030f712c9SDave Chinner if (error) 301130f712c9SDave Chinner goto done; 301230f712c9SDave Chinner } 301330f712c9SDave Chinner break; 301430f712c9SDave Chinner 301530f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 301630f712c9SDave Chinner /* 301730f712c9SDave Chinner * New allocation is contiguous with a real allocation 301830f712c9SDave Chinner * on the right. 301930f712c9SDave Chinner * Merge the new allocation with the right neighbor. 302030f712c9SDave Chinner */ 302130f712c9SDave Chinner trace_xfs_bmap_pre_update(bma->ip, bma->idx, state, _THIS_IP_); 302230f712c9SDave Chinner xfs_bmbt_set_allf(xfs_iext_get_ext(ifp, bma->idx), 302330f712c9SDave Chinner new->br_startoff, new->br_startblock, 302430f712c9SDave Chinner new->br_blockcount + right.br_blockcount, 302530f712c9SDave Chinner right.br_state); 302630f712c9SDave Chinner trace_xfs_bmap_post_update(bma->ip, bma->idx, state, _THIS_IP_); 302730f712c9SDave Chinner 302830f712c9SDave Chinner if (bma->cur == NULL) { 302930f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 303030f712c9SDave Chinner } else { 303130f712c9SDave Chinner rval = 0; 303230f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, 303330f712c9SDave Chinner right.br_startoff, 303430f712c9SDave Chinner right.br_startblock, 303530f712c9SDave Chinner right.br_blockcount, &i); 303630f712c9SDave Chinner if (error) 303730f712c9SDave Chinner goto done; 3038c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 303930f712c9SDave Chinner error = xfs_bmbt_update(bma->cur, new->br_startoff, 304030f712c9SDave Chinner new->br_startblock, 304130f712c9SDave Chinner new->br_blockcount + 304230f712c9SDave Chinner right.br_blockcount, 304330f712c9SDave Chinner right.br_state); 304430f712c9SDave Chinner if (error) 304530f712c9SDave Chinner goto done; 304630f712c9SDave Chinner } 304730f712c9SDave Chinner break; 304830f712c9SDave Chinner 304930f712c9SDave Chinner case 0: 305030f712c9SDave Chinner /* 305130f712c9SDave Chinner * New allocation is not contiguous with another 305230f712c9SDave Chinner * real allocation. 305330f712c9SDave Chinner * Insert a new entry. 305430f712c9SDave Chinner */ 305530f712c9SDave Chinner xfs_iext_insert(bma->ip, bma->idx, 1, new, state); 305630f712c9SDave Chinner XFS_IFORK_NEXT_SET(bma->ip, whichfork, 305730f712c9SDave Chinner XFS_IFORK_NEXTENTS(bma->ip, whichfork) + 1); 305830f712c9SDave Chinner if (bma->cur == NULL) { 305930f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 306030f712c9SDave Chinner } else { 306130f712c9SDave Chinner rval = XFS_ILOG_CORE; 306230f712c9SDave Chinner error = xfs_bmbt_lookup_eq(bma->cur, 306330f712c9SDave Chinner new->br_startoff, 306430f712c9SDave Chinner new->br_startblock, 306530f712c9SDave Chinner new->br_blockcount, &i); 306630f712c9SDave Chinner if (error) 306730f712c9SDave Chinner goto done; 3068c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 306930f712c9SDave Chinner bma->cur->bc_rec.b.br_state = new->br_state; 307030f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 307130f712c9SDave Chinner if (error) 307230f712c9SDave Chinner goto done; 3073c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 307430f712c9SDave Chinner } 307530f712c9SDave Chinner break; 307630f712c9SDave Chinner } 307730f712c9SDave Chinner 30789c194644SDarrick J. Wong /* add reverse mapping */ 30799c194644SDarrick J. Wong error = xfs_rmap_map_extent(mp, bma->dfops, bma->ip, whichfork, new); 30809c194644SDarrick J. Wong if (error) 30819c194644SDarrick J. Wong goto done; 30829c194644SDarrick J. Wong 308330f712c9SDave Chinner /* convert to a btree if necessary */ 308430f712c9SDave Chinner if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 308530f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 308630f712c9SDave Chinner 308730f712c9SDave Chinner ASSERT(bma->cur == NULL); 308830f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 30892c3234d1SDarrick J. Wong bma->firstblock, bma->dfops, &bma->cur, 309030f712c9SDave Chinner 0, &tmp_logflags, whichfork); 309130f712c9SDave Chinner bma->logflags |= tmp_logflags; 309230f712c9SDave Chinner if (error) 309330f712c9SDave Chinner goto done; 309430f712c9SDave Chinner } 309530f712c9SDave Chinner 309630f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 309730f712c9SDave Chinner if (bma->cur) 309830f712c9SDave Chinner bma->cur->bc_private.b.allocated = 0; 309930f712c9SDave Chinner 310030f712c9SDave Chinner xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); 310130f712c9SDave Chinner done: 310230f712c9SDave Chinner bma->logflags |= rval; 310330f712c9SDave Chinner return error; 310430f712c9SDave Chinner } 310530f712c9SDave Chinner 310630f712c9SDave Chinner /* 310730f712c9SDave Chinner * Functions used in the extent read, allocate and remove paths 310830f712c9SDave Chinner */ 310930f712c9SDave Chinner 311030f712c9SDave Chinner /* 311130f712c9SDave Chinner * Adjust the size of the new extent based on di_extsize and rt extsize. 311230f712c9SDave Chinner */ 311330f712c9SDave Chinner int 311430f712c9SDave Chinner xfs_bmap_extsize_align( 311530f712c9SDave Chinner xfs_mount_t *mp, 311630f712c9SDave Chinner xfs_bmbt_irec_t *gotp, /* next extent pointer */ 311730f712c9SDave Chinner xfs_bmbt_irec_t *prevp, /* previous extent pointer */ 311830f712c9SDave Chinner xfs_extlen_t extsz, /* align to this extent size */ 311930f712c9SDave Chinner int rt, /* is this a realtime inode? */ 312030f712c9SDave Chinner int eof, /* is extent at end-of-file? */ 312130f712c9SDave Chinner int delay, /* creating delalloc extent? */ 312230f712c9SDave Chinner int convert, /* overwriting unwritten extent? */ 312330f712c9SDave Chinner xfs_fileoff_t *offp, /* in/out: aligned offset */ 312430f712c9SDave Chinner xfs_extlen_t *lenp) /* in/out: aligned length */ 312530f712c9SDave Chinner { 312630f712c9SDave Chinner xfs_fileoff_t orig_off; /* original offset */ 312730f712c9SDave Chinner xfs_extlen_t orig_alen; /* original length */ 312830f712c9SDave Chinner xfs_fileoff_t orig_end; /* original off+len */ 312930f712c9SDave Chinner xfs_fileoff_t nexto; /* next file offset */ 313030f712c9SDave Chinner xfs_fileoff_t prevo; /* previous file offset */ 313130f712c9SDave Chinner xfs_fileoff_t align_off; /* temp for offset */ 313230f712c9SDave Chinner xfs_extlen_t align_alen; /* temp for length */ 313330f712c9SDave Chinner xfs_extlen_t temp; /* temp for calculations */ 313430f712c9SDave Chinner 313530f712c9SDave Chinner if (convert) 313630f712c9SDave Chinner return 0; 313730f712c9SDave Chinner 313830f712c9SDave Chinner orig_off = align_off = *offp; 313930f712c9SDave Chinner orig_alen = align_alen = *lenp; 314030f712c9SDave Chinner orig_end = orig_off + orig_alen; 314130f712c9SDave Chinner 314230f712c9SDave Chinner /* 314330f712c9SDave Chinner * If this request overlaps an existing extent, then don't 314430f712c9SDave Chinner * attempt to perform any additional alignment. 314530f712c9SDave Chinner */ 314630f712c9SDave Chinner if (!delay && !eof && 314730f712c9SDave Chinner (orig_off >= gotp->br_startoff) && 314830f712c9SDave Chinner (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { 314930f712c9SDave Chinner return 0; 315030f712c9SDave Chinner } 315130f712c9SDave Chinner 315230f712c9SDave Chinner /* 315330f712c9SDave Chinner * If the file offset is unaligned vs. the extent size 315430f712c9SDave Chinner * we need to align it. This will be possible unless 315530f712c9SDave Chinner * the file was previously written with a kernel that didn't 315630f712c9SDave Chinner * perform this alignment, or if a truncate shot us in the 315730f712c9SDave Chinner * foot. 315830f712c9SDave Chinner */ 315930f712c9SDave Chinner temp = do_mod(orig_off, extsz); 316030f712c9SDave Chinner if (temp) { 316130f712c9SDave Chinner align_alen += temp; 316230f712c9SDave Chinner align_off -= temp; 316330f712c9SDave Chinner } 31646dea405eSDave Chinner 31656dea405eSDave Chinner /* Same adjustment for the end of the requested area. */ 31666dea405eSDave Chinner temp = (align_alen % extsz); 31676dea405eSDave Chinner if (temp) 316830f712c9SDave Chinner align_alen += extsz - temp; 31696dea405eSDave Chinner 31706dea405eSDave Chinner /* 31716dea405eSDave Chinner * For large extent hint sizes, the aligned extent might be larger than 31726dea405eSDave Chinner * MAXEXTLEN. In that case, reduce the size by an extsz so that it pulls 31736dea405eSDave Chinner * the length back under MAXEXTLEN. The outer allocation loops handle 31746dea405eSDave Chinner * short allocation just fine, so it is safe to do this. We only want to 31756dea405eSDave Chinner * do it when we are forced to, though, because it means more allocation 31766dea405eSDave Chinner * operations are required. 31776dea405eSDave Chinner */ 31786dea405eSDave Chinner while (align_alen > MAXEXTLEN) 31796dea405eSDave Chinner align_alen -= extsz; 31806dea405eSDave Chinner ASSERT(align_alen <= MAXEXTLEN); 31816dea405eSDave Chinner 318230f712c9SDave Chinner /* 318330f712c9SDave Chinner * If the previous block overlaps with this proposed allocation 318430f712c9SDave Chinner * then move the start forward without adjusting the length. 318530f712c9SDave Chinner */ 318630f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) { 318730f712c9SDave Chinner if (prevp->br_startblock == HOLESTARTBLOCK) 318830f712c9SDave Chinner prevo = prevp->br_startoff; 318930f712c9SDave Chinner else 319030f712c9SDave Chinner prevo = prevp->br_startoff + prevp->br_blockcount; 319130f712c9SDave Chinner } else 319230f712c9SDave Chinner prevo = 0; 319330f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 319430f712c9SDave Chinner align_off = prevo; 319530f712c9SDave Chinner /* 319630f712c9SDave Chinner * If the next block overlaps with this proposed allocation 319730f712c9SDave Chinner * then move the start back without adjusting the length, 319830f712c9SDave Chinner * but not before offset 0. 319930f712c9SDave Chinner * This may of course make the start overlap previous block, 320030f712c9SDave Chinner * and if we hit the offset 0 limit then the next block 320130f712c9SDave Chinner * can still overlap too. 320230f712c9SDave Chinner */ 320330f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) { 320430f712c9SDave Chinner if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || 320530f712c9SDave Chinner (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) 320630f712c9SDave Chinner nexto = gotp->br_startoff + gotp->br_blockcount; 320730f712c9SDave Chinner else 320830f712c9SDave Chinner nexto = gotp->br_startoff; 320930f712c9SDave Chinner } else 321030f712c9SDave Chinner nexto = NULLFILEOFF; 321130f712c9SDave Chinner if (!eof && 321230f712c9SDave Chinner align_off + align_alen != orig_end && 321330f712c9SDave Chinner align_off + align_alen > nexto) 321430f712c9SDave Chinner align_off = nexto > align_alen ? nexto - align_alen : 0; 321530f712c9SDave Chinner /* 321630f712c9SDave Chinner * If we're now overlapping the next or previous extent that 321730f712c9SDave Chinner * means we can't fit an extsz piece in this hole. Just move 321830f712c9SDave Chinner * the start forward to the first valid spot and set 321930f712c9SDave Chinner * the length so we hit the end. 322030f712c9SDave Chinner */ 322130f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 322230f712c9SDave Chinner align_off = prevo; 322330f712c9SDave Chinner if (align_off + align_alen != orig_end && 322430f712c9SDave Chinner align_off + align_alen > nexto && 322530f712c9SDave Chinner nexto != NULLFILEOFF) { 322630f712c9SDave Chinner ASSERT(nexto > prevo); 322730f712c9SDave Chinner align_alen = nexto - align_off; 322830f712c9SDave Chinner } 322930f712c9SDave Chinner 323030f712c9SDave Chinner /* 323130f712c9SDave Chinner * If realtime, and the result isn't a multiple of the realtime 323230f712c9SDave Chinner * extent size we need to remove blocks until it is. 323330f712c9SDave Chinner */ 323430f712c9SDave Chinner if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) { 323530f712c9SDave Chinner /* 323630f712c9SDave Chinner * We're not covering the original request, or 323730f712c9SDave Chinner * we won't be able to once we fix the length. 323830f712c9SDave Chinner */ 323930f712c9SDave Chinner if (orig_off < align_off || 324030f712c9SDave Chinner orig_end > align_off + align_alen || 324130f712c9SDave Chinner align_alen - temp < orig_alen) 32422451337dSDave Chinner return -EINVAL; 324330f712c9SDave Chinner /* 324430f712c9SDave Chinner * Try to fix it by moving the start up. 324530f712c9SDave Chinner */ 324630f712c9SDave Chinner if (align_off + temp <= orig_off) { 324730f712c9SDave Chinner align_alen -= temp; 324830f712c9SDave Chinner align_off += temp; 324930f712c9SDave Chinner } 325030f712c9SDave Chinner /* 325130f712c9SDave Chinner * Try to fix it by moving the end in. 325230f712c9SDave Chinner */ 325330f712c9SDave Chinner else if (align_off + align_alen - temp >= orig_end) 325430f712c9SDave Chinner align_alen -= temp; 325530f712c9SDave Chinner /* 325630f712c9SDave Chinner * Set the start to the minimum then trim the length. 325730f712c9SDave Chinner */ 325830f712c9SDave Chinner else { 325930f712c9SDave Chinner align_alen -= orig_off - align_off; 326030f712c9SDave Chinner align_off = orig_off; 326130f712c9SDave Chinner align_alen -= align_alen % mp->m_sb.sb_rextsize; 326230f712c9SDave Chinner } 326330f712c9SDave Chinner /* 326430f712c9SDave Chinner * Result doesn't cover the request, fail it. 326530f712c9SDave Chinner */ 326630f712c9SDave Chinner if (orig_off < align_off || orig_end > align_off + align_alen) 32672451337dSDave Chinner return -EINVAL; 326830f712c9SDave Chinner } else { 326930f712c9SDave Chinner ASSERT(orig_off >= align_off); 32706dea405eSDave Chinner /* see MAXEXTLEN handling above */ 32716dea405eSDave Chinner ASSERT(orig_end <= align_off + align_alen || 32726dea405eSDave Chinner align_alen + extsz > MAXEXTLEN); 327330f712c9SDave Chinner } 327430f712c9SDave Chinner 327530f712c9SDave Chinner #ifdef DEBUG 327630f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) 327730f712c9SDave Chinner ASSERT(align_off + align_alen <= gotp->br_startoff); 327830f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) 327930f712c9SDave Chinner ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); 328030f712c9SDave Chinner #endif 328130f712c9SDave Chinner 328230f712c9SDave Chinner *lenp = align_alen; 328330f712c9SDave Chinner *offp = align_off; 328430f712c9SDave Chinner return 0; 328530f712c9SDave Chinner } 328630f712c9SDave Chinner 328730f712c9SDave Chinner #define XFS_ALLOC_GAP_UNITS 4 328830f712c9SDave Chinner 328930f712c9SDave Chinner void 329030f712c9SDave Chinner xfs_bmap_adjacent( 329130f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 329230f712c9SDave Chinner { 329330f712c9SDave Chinner xfs_fsblock_t adjust; /* adjustment to block numbers */ 329430f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 329530f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 329630f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 329730f712c9SDave Chinner int rt; /* true if inode is realtime */ 329830f712c9SDave Chinner 329930f712c9SDave Chinner #define ISVALID(x,y) \ 330030f712c9SDave Chinner (rt ? \ 330130f712c9SDave Chinner (x) < mp->m_sb.sb_rblocks : \ 330230f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \ 330330f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \ 330430f712c9SDave Chinner XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks) 330530f712c9SDave Chinner 330630f712c9SDave Chinner mp = ap->ip->i_mount; 330730f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 3308292378edSDave Chinner rt = XFS_IS_REALTIME_INODE(ap->ip) && 3309292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype); 331030f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 331130f712c9SDave Chinner /* 331230f712c9SDave Chinner * If allocating at eof, and there's a previous real block, 331330f712c9SDave Chinner * try to use its last block as our starting point. 331430f712c9SDave Chinner */ 331530f712c9SDave Chinner if (ap->eof && ap->prev.br_startoff != NULLFILEOFF && 331630f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 331730f712c9SDave Chinner ISVALID(ap->prev.br_startblock + ap->prev.br_blockcount, 331830f712c9SDave Chinner ap->prev.br_startblock)) { 331930f712c9SDave Chinner ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount; 332030f712c9SDave Chinner /* 332130f712c9SDave Chinner * Adjust for the gap between prevp and us. 332230f712c9SDave Chinner */ 332330f712c9SDave Chinner adjust = ap->offset - 332430f712c9SDave Chinner (ap->prev.br_startoff + ap->prev.br_blockcount); 332530f712c9SDave Chinner if (adjust && 332630f712c9SDave Chinner ISVALID(ap->blkno + adjust, ap->prev.br_startblock)) 332730f712c9SDave Chinner ap->blkno += adjust; 332830f712c9SDave Chinner } 332930f712c9SDave Chinner /* 333030f712c9SDave Chinner * If not at eof, then compare the two neighbor blocks. 333130f712c9SDave Chinner * Figure out whether either one gives us a good starting point, 333230f712c9SDave Chinner * and pick the better one. 333330f712c9SDave Chinner */ 333430f712c9SDave Chinner else if (!ap->eof) { 333530f712c9SDave Chinner xfs_fsblock_t gotbno; /* right side block number */ 333630f712c9SDave Chinner xfs_fsblock_t gotdiff=0; /* right side difference */ 333730f712c9SDave Chinner xfs_fsblock_t prevbno; /* left side block number */ 333830f712c9SDave Chinner xfs_fsblock_t prevdiff=0; /* left side difference */ 333930f712c9SDave Chinner 334030f712c9SDave Chinner /* 334130f712c9SDave Chinner * If there's a previous (left) block, select a requested 334230f712c9SDave Chinner * start block based on it. 334330f712c9SDave Chinner */ 334430f712c9SDave Chinner if (ap->prev.br_startoff != NULLFILEOFF && 334530f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 334630f712c9SDave Chinner (prevbno = ap->prev.br_startblock + 334730f712c9SDave Chinner ap->prev.br_blockcount) && 334830f712c9SDave Chinner ISVALID(prevbno, ap->prev.br_startblock)) { 334930f712c9SDave Chinner /* 335030f712c9SDave Chinner * Calculate gap to end of previous block. 335130f712c9SDave Chinner */ 335230f712c9SDave Chinner adjust = prevdiff = ap->offset - 335330f712c9SDave Chinner (ap->prev.br_startoff + 335430f712c9SDave Chinner ap->prev.br_blockcount); 335530f712c9SDave Chinner /* 335630f712c9SDave Chinner * Figure the startblock based on the previous block's 335730f712c9SDave Chinner * end and the gap size. 335830f712c9SDave Chinner * Heuristic! 335930f712c9SDave Chinner * If the gap is large relative to the piece we're 336030f712c9SDave Chinner * allocating, or using it gives us an invalid block 336130f712c9SDave Chinner * number, then just use the end of the previous block. 336230f712c9SDave Chinner */ 336330f712c9SDave Chinner if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 336430f712c9SDave Chinner ISVALID(prevbno + prevdiff, 336530f712c9SDave Chinner ap->prev.br_startblock)) 336630f712c9SDave Chinner prevbno += adjust; 336730f712c9SDave Chinner else 336830f712c9SDave Chinner prevdiff += adjust; 336930f712c9SDave Chinner /* 337030f712c9SDave Chinner * If the firstblock forbids it, can't use it, 337130f712c9SDave Chinner * must use default. 337230f712c9SDave Chinner */ 337330f712c9SDave Chinner if (!rt && !nullfb && 337430f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno) 337530f712c9SDave Chinner prevbno = NULLFSBLOCK; 337630f712c9SDave Chinner } 337730f712c9SDave Chinner /* 337830f712c9SDave Chinner * No previous block or can't follow it, just default. 337930f712c9SDave Chinner */ 338030f712c9SDave Chinner else 338130f712c9SDave Chinner prevbno = NULLFSBLOCK; 338230f712c9SDave Chinner /* 338330f712c9SDave Chinner * If there's a following (right) block, select a requested 338430f712c9SDave Chinner * start block based on it. 338530f712c9SDave Chinner */ 338630f712c9SDave Chinner if (!isnullstartblock(ap->got.br_startblock)) { 338730f712c9SDave Chinner /* 338830f712c9SDave Chinner * Calculate gap to start of next block. 338930f712c9SDave Chinner */ 339030f712c9SDave Chinner adjust = gotdiff = ap->got.br_startoff - ap->offset; 339130f712c9SDave Chinner /* 339230f712c9SDave Chinner * Figure the startblock based on the next block's 339330f712c9SDave Chinner * start and the gap size. 339430f712c9SDave Chinner */ 339530f712c9SDave Chinner gotbno = ap->got.br_startblock; 339630f712c9SDave Chinner /* 339730f712c9SDave Chinner * Heuristic! 339830f712c9SDave Chinner * If the gap is large relative to the piece we're 339930f712c9SDave Chinner * allocating, or using it gives us an invalid block 340030f712c9SDave Chinner * number, then just use the start of the next block 340130f712c9SDave Chinner * offset by our length. 340230f712c9SDave Chinner */ 340330f712c9SDave Chinner if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 340430f712c9SDave Chinner ISVALID(gotbno - gotdiff, gotbno)) 340530f712c9SDave Chinner gotbno -= adjust; 340630f712c9SDave Chinner else if (ISVALID(gotbno - ap->length, gotbno)) { 340730f712c9SDave Chinner gotbno -= ap->length; 340830f712c9SDave Chinner gotdiff += adjust - ap->length; 340930f712c9SDave Chinner } else 341030f712c9SDave Chinner gotdiff += adjust; 341130f712c9SDave Chinner /* 341230f712c9SDave Chinner * If the firstblock forbids it, can't use it, 341330f712c9SDave Chinner * must use default. 341430f712c9SDave Chinner */ 341530f712c9SDave Chinner if (!rt && !nullfb && 341630f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno) 341730f712c9SDave Chinner gotbno = NULLFSBLOCK; 341830f712c9SDave Chinner } 341930f712c9SDave Chinner /* 342030f712c9SDave Chinner * No next block, just default. 342130f712c9SDave Chinner */ 342230f712c9SDave Chinner else 342330f712c9SDave Chinner gotbno = NULLFSBLOCK; 342430f712c9SDave Chinner /* 342530f712c9SDave Chinner * If both valid, pick the better one, else the only good 342630f712c9SDave Chinner * one, else ap->blkno is already set (to 0 or the inode block). 342730f712c9SDave Chinner */ 342830f712c9SDave Chinner if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK) 342930f712c9SDave Chinner ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno; 343030f712c9SDave Chinner else if (prevbno != NULLFSBLOCK) 343130f712c9SDave Chinner ap->blkno = prevbno; 343230f712c9SDave Chinner else if (gotbno != NULLFSBLOCK) 343330f712c9SDave Chinner ap->blkno = gotbno; 343430f712c9SDave Chinner } 343530f712c9SDave Chinner #undef ISVALID 343630f712c9SDave Chinner } 343730f712c9SDave Chinner 343830f712c9SDave Chinner static int 343930f712c9SDave Chinner xfs_bmap_longest_free_extent( 344030f712c9SDave Chinner struct xfs_trans *tp, 344130f712c9SDave Chinner xfs_agnumber_t ag, 344230f712c9SDave Chinner xfs_extlen_t *blen, 344330f712c9SDave Chinner int *notinit) 344430f712c9SDave Chinner { 344530f712c9SDave Chinner struct xfs_mount *mp = tp->t_mountp; 344630f712c9SDave Chinner struct xfs_perag *pag; 344730f712c9SDave Chinner xfs_extlen_t longest; 344830f712c9SDave Chinner int error = 0; 344930f712c9SDave Chinner 345030f712c9SDave Chinner pag = xfs_perag_get(mp, ag); 345130f712c9SDave Chinner if (!pag->pagf_init) { 345230f712c9SDave Chinner error = xfs_alloc_pagf_init(mp, tp, ag, XFS_ALLOC_FLAG_TRYLOCK); 345330f712c9SDave Chinner if (error) 345430f712c9SDave Chinner goto out; 345530f712c9SDave Chinner 345630f712c9SDave Chinner if (!pag->pagf_init) { 345730f712c9SDave Chinner *notinit = 1; 345830f712c9SDave Chinner goto out; 345930f712c9SDave Chinner } 346030f712c9SDave Chinner } 346130f712c9SDave Chinner 346250adbcb4SDave Chinner longest = xfs_alloc_longest_free_extent(mp, pag, 34633fd129b6SDarrick J. Wong xfs_alloc_min_freelist(mp, pag), 34643fd129b6SDarrick J. Wong xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE)); 346530f712c9SDave Chinner if (*blen < longest) 346630f712c9SDave Chinner *blen = longest; 346730f712c9SDave Chinner 346830f712c9SDave Chinner out: 346930f712c9SDave Chinner xfs_perag_put(pag); 347030f712c9SDave Chinner return error; 347130f712c9SDave Chinner } 347230f712c9SDave Chinner 347330f712c9SDave Chinner static void 347430f712c9SDave Chinner xfs_bmap_select_minlen( 347530f712c9SDave Chinner struct xfs_bmalloca *ap, 347630f712c9SDave Chinner struct xfs_alloc_arg *args, 347730f712c9SDave Chinner xfs_extlen_t *blen, 347830f712c9SDave Chinner int notinit) 347930f712c9SDave Chinner { 348030f712c9SDave Chinner if (notinit || *blen < ap->minlen) { 348130f712c9SDave Chinner /* 348230f712c9SDave Chinner * Since we did a BUF_TRYLOCK above, it is possible that 348330f712c9SDave Chinner * there is space for this request. 348430f712c9SDave Chinner */ 348530f712c9SDave Chinner args->minlen = ap->minlen; 348630f712c9SDave Chinner } else if (*blen < args->maxlen) { 348730f712c9SDave Chinner /* 348830f712c9SDave Chinner * If the best seen length is less than the request length, 348930f712c9SDave Chinner * use the best as the minimum. 349030f712c9SDave Chinner */ 349130f712c9SDave Chinner args->minlen = *blen; 349230f712c9SDave Chinner } else { 349330f712c9SDave Chinner /* 349430f712c9SDave Chinner * Otherwise we've seen an extent as big as maxlen, use that 349530f712c9SDave Chinner * as the minimum. 349630f712c9SDave Chinner */ 349730f712c9SDave Chinner args->minlen = args->maxlen; 349830f712c9SDave Chinner } 349930f712c9SDave Chinner } 350030f712c9SDave Chinner 350130f712c9SDave Chinner STATIC int 350230f712c9SDave Chinner xfs_bmap_btalloc_nullfb( 350330f712c9SDave Chinner struct xfs_bmalloca *ap, 350430f712c9SDave Chinner struct xfs_alloc_arg *args, 350530f712c9SDave Chinner xfs_extlen_t *blen) 350630f712c9SDave Chinner { 350730f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 350830f712c9SDave Chinner xfs_agnumber_t ag, startag; 350930f712c9SDave Chinner int notinit = 0; 351030f712c9SDave Chinner int error; 351130f712c9SDave Chinner 351230f712c9SDave Chinner args->type = XFS_ALLOCTYPE_START_BNO; 351330f712c9SDave Chinner args->total = ap->total; 351430f712c9SDave Chinner 351530f712c9SDave Chinner startag = ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 351630f712c9SDave Chinner if (startag == NULLAGNUMBER) 351730f712c9SDave Chinner startag = ag = 0; 351830f712c9SDave Chinner 351930f712c9SDave Chinner while (*blen < args->maxlen) { 352030f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 352130f712c9SDave Chinner ¬init); 352230f712c9SDave Chinner if (error) 352330f712c9SDave Chinner return error; 352430f712c9SDave Chinner 352530f712c9SDave Chinner if (++ag == mp->m_sb.sb_agcount) 352630f712c9SDave Chinner ag = 0; 352730f712c9SDave Chinner if (ag == startag) 352830f712c9SDave Chinner break; 352930f712c9SDave Chinner } 353030f712c9SDave Chinner 353130f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 353230f712c9SDave Chinner return 0; 353330f712c9SDave Chinner } 353430f712c9SDave Chinner 353530f712c9SDave Chinner STATIC int 353630f712c9SDave Chinner xfs_bmap_btalloc_filestreams( 353730f712c9SDave Chinner struct xfs_bmalloca *ap, 353830f712c9SDave Chinner struct xfs_alloc_arg *args, 353930f712c9SDave Chinner xfs_extlen_t *blen) 354030f712c9SDave Chinner { 354130f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 354230f712c9SDave Chinner xfs_agnumber_t ag; 354330f712c9SDave Chinner int notinit = 0; 354430f712c9SDave Chinner int error; 354530f712c9SDave Chinner 354630f712c9SDave Chinner args->type = XFS_ALLOCTYPE_NEAR_BNO; 354730f712c9SDave Chinner args->total = ap->total; 354830f712c9SDave Chinner 354930f712c9SDave Chinner ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 355030f712c9SDave Chinner if (ag == NULLAGNUMBER) 355130f712c9SDave Chinner ag = 0; 355230f712c9SDave Chinner 355330f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, ¬init); 355430f712c9SDave Chinner if (error) 355530f712c9SDave Chinner return error; 355630f712c9SDave Chinner 355730f712c9SDave Chinner if (*blen < args->maxlen) { 355830f712c9SDave Chinner error = xfs_filestream_new_ag(ap, &ag); 355930f712c9SDave Chinner if (error) 356030f712c9SDave Chinner return error; 356130f712c9SDave Chinner 356230f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 356330f712c9SDave Chinner ¬init); 356430f712c9SDave Chinner if (error) 356530f712c9SDave Chinner return error; 356630f712c9SDave Chinner 356730f712c9SDave Chinner } 356830f712c9SDave Chinner 356930f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 357030f712c9SDave Chinner 357130f712c9SDave Chinner /* 357230f712c9SDave Chinner * Set the failure fallback case to look in the selected AG as stream 357330f712c9SDave Chinner * may have moved. 357430f712c9SDave Chinner */ 357530f712c9SDave Chinner ap->blkno = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0); 357630f712c9SDave Chinner return 0; 357730f712c9SDave Chinner } 357830f712c9SDave Chinner 357930f712c9SDave Chinner STATIC int 358030f712c9SDave Chinner xfs_bmap_btalloc( 358130f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 358230f712c9SDave Chinner { 358330f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 358430f712c9SDave Chinner xfs_alloctype_t atype = 0; /* type for allocation routines */ 3585292378edSDave Chinner xfs_extlen_t align = 0; /* minimum allocation alignment */ 358630f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 358730f712c9SDave Chinner xfs_agnumber_t ag; 358830f712c9SDave Chinner xfs_alloc_arg_t args; 358930f712c9SDave Chinner xfs_extlen_t blen; 359030f712c9SDave Chinner xfs_extlen_t nextminlen = 0; 359130f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 359230f712c9SDave Chinner int isaligned; 359330f712c9SDave Chinner int tryagain; 359430f712c9SDave Chinner int error; 359530f712c9SDave Chinner int stripe_align; 359630f712c9SDave Chinner 359730f712c9SDave Chinner ASSERT(ap->length); 359830f712c9SDave Chinner 359930f712c9SDave Chinner mp = ap->ip->i_mount; 360030f712c9SDave Chinner 360130f712c9SDave Chinner /* stripe alignment for allocation is determined by mount parameters */ 360230f712c9SDave Chinner stripe_align = 0; 360330f712c9SDave Chinner if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC)) 360430f712c9SDave Chinner stripe_align = mp->m_swidth; 360530f712c9SDave Chinner else if (mp->m_dalign) 360630f712c9SDave Chinner stripe_align = mp->m_dalign; 360730f712c9SDave Chinner 3608f7ca3522SDarrick J. Wong if (ap->flags & XFS_BMAPI_COWFORK) 3609f7ca3522SDarrick J. Wong align = xfs_get_cowextsz_hint(ap->ip); 3610f7ca3522SDarrick J. Wong else if (xfs_alloc_is_userdata(ap->datatype)) 3611292378edSDave Chinner align = xfs_get_extsz_hint(ap->ip); 361230f712c9SDave Chinner if (unlikely(align)) { 361330f712c9SDave Chinner error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, 361430f712c9SDave Chinner align, 0, ap->eof, 0, ap->conv, 361530f712c9SDave Chinner &ap->offset, &ap->length); 361630f712c9SDave Chinner ASSERT(!error); 361730f712c9SDave Chinner ASSERT(ap->length); 361830f712c9SDave Chinner } 361930f712c9SDave Chinner 362030f712c9SDave Chinner 362130f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 362230f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 362330f712c9SDave Chinner if (nullfb) { 3624292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3625292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) { 362630f712c9SDave Chinner ag = xfs_filestream_lookup_ag(ap->ip); 362730f712c9SDave Chinner ag = (ag != NULLAGNUMBER) ? ag : 0; 362830f712c9SDave Chinner ap->blkno = XFS_AGB_TO_FSB(mp, ag, 0); 362930f712c9SDave Chinner } else { 363030f712c9SDave Chinner ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino); 363130f712c9SDave Chinner } 363230f712c9SDave Chinner } else 363330f712c9SDave Chinner ap->blkno = *ap->firstblock; 363430f712c9SDave Chinner 363530f712c9SDave Chinner xfs_bmap_adjacent(ap); 363630f712c9SDave Chinner 363730f712c9SDave Chinner /* 363830f712c9SDave Chinner * If allowed, use ap->blkno; otherwise must use firstblock since 363930f712c9SDave Chinner * it's in the right allocation group. 364030f712c9SDave Chinner */ 364130f712c9SDave Chinner if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno) 364230f712c9SDave Chinner ; 364330f712c9SDave Chinner else 364430f712c9SDave Chinner ap->blkno = *ap->firstblock; 364530f712c9SDave Chinner /* 364630f712c9SDave Chinner * Normal allocation, done through xfs_alloc_vextent. 364730f712c9SDave Chinner */ 364830f712c9SDave Chinner tryagain = isaligned = 0; 364930f712c9SDave Chinner memset(&args, 0, sizeof(args)); 365030f712c9SDave Chinner args.tp = ap->tp; 365130f712c9SDave Chinner args.mp = mp; 365230f712c9SDave Chinner args.fsbno = ap->blkno; 3653340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&args.oinfo); 365430f712c9SDave Chinner 365530f712c9SDave Chinner /* Trim the allocation back to the maximum an AG can fit. */ 365652548852SDarrick J. Wong args.maxlen = MIN(ap->length, mp->m_ag_max_usable); 365730f712c9SDave Chinner args.firstblock = *ap->firstblock; 365830f712c9SDave Chinner blen = 0; 365930f712c9SDave Chinner if (nullfb) { 366030f712c9SDave Chinner /* 366130f712c9SDave Chinner * Search for an allocation group with a single extent large 366230f712c9SDave Chinner * enough for the request. If one isn't found, then adjust 366330f712c9SDave Chinner * the minimum allocation size to the largest space found. 366430f712c9SDave Chinner */ 3665292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3666292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) 366730f712c9SDave Chinner error = xfs_bmap_btalloc_filestreams(ap, &args, &blen); 366830f712c9SDave Chinner else 366930f712c9SDave Chinner error = xfs_bmap_btalloc_nullfb(ap, &args, &blen); 367030f712c9SDave Chinner if (error) 367130f712c9SDave Chinner return error; 36722c3234d1SDarrick J. Wong } else if (ap->dfops->dop_low) { 367330f712c9SDave Chinner if (xfs_inode_is_filestream(ap->ip)) 367430f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 367530f712c9SDave Chinner else 367630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 367730f712c9SDave Chinner args.total = args.minlen = ap->minlen; 367830f712c9SDave Chinner } else { 367930f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 368030f712c9SDave Chinner args.total = ap->total; 368130f712c9SDave Chinner args.minlen = ap->minlen; 368230f712c9SDave Chinner } 368330f712c9SDave Chinner /* apply extent size hints if obtained earlier */ 368430f712c9SDave Chinner if (unlikely(align)) { 368530f712c9SDave Chinner args.prod = align; 368630f712c9SDave Chinner if ((args.mod = (xfs_extlen_t)do_mod(ap->offset, args.prod))) 368730f712c9SDave Chinner args.mod = (xfs_extlen_t)(args.prod - args.mod); 368809cbfeafSKirill A. Shutemov } else if (mp->m_sb.sb_blocksize >= PAGE_SIZE) { 368930f712c9SDave Chinner args.prod = 1; 369030f712c9SDave Chinner args.mod = 0; 369130f712c9SDave Chinner } else { 369209cbfeafSKirill A. Shutemov args.prod = PAGE_SIZE >> mp->m_sb.sb_blocklog; 369330f712c9SDave Chinner if ((args.mod = (xfs_extlen_t)(do_mod(ap->offset, args.prod)))) 369430f712c9SDave Chinner args.mod = (xfs_extlen_t)(args.prod - args.mod); 369530f712c9SDave Chinner } 369630f712c9SDave Chinner /* 369730f712c9SDave Chinner * If we are not low on available data blocks, and the 369830f712c9SDave Chinner * underlying logical volume manager is a stripe, and 369930f712c9SDave Chinner * the file offset is zero then try to allocate data 370030f712c9SDave Chinner * blocks on stripe unit boundary. 370130f712c9SDave Chinner * NOTE: ap->aeof is only set if the allocation length 370230f712c9SDave Chinner * is >= the stripe unit and the allocation offset is 370330f712c9SDave Chinner * at the end of file. 370430f712c9SDave Chinner */ 37052c3234d1SDarrick J. Wong if (!ap->dfops->dop_low && ap->aeof) { 370630f712c9SDave Chinner if (!ap->offset) { 370730f712c9SDave Chinner args.alignment = stripe_align; 370830f712c9SDave Chinner atype = args.type; 370930f712c9SDave Chinner isaligned = 1; 371030f712c9SDave Chinner /* 371130f712c9SDave Chinner * Adjust for alignment 371230f712c9SDave Chinner */ 371330f712c9SDave Chinner if (blen > args.alignment && blen <= args.maxlen) 371430f712c9SDave Chinner args.minlen = blen - args.alignment; 371530f712c9SDave Chinner args.minalignslop = 0; 371630f712c9SDave Chinner } else { 371730f712c9SDave Chinner /* 371830f712c9SDave Chinner * First try an exact bno allocation. 371930f712c9SDave Chinner * If it fails then do a near or start bno 372030f712c9SDave Chinner * allocation with alignment turned on. 372130f712c9SDave Chinner */ 372230f712c9SDave Chinner atype = args.type; 372330f712c9SDave Chinner tryagain = 1; 372430f712c9SDave Chinner args.type = XFS_ALLOCTYPE_THIS_BNO; 372530f712c9SDave Chinner args.alignment = 1; 372630f712c9SDave Chinner /* 372730f712c9SDave Chinner * Compute the minlen+alignment for the 372830f712c9SDave Chinner * next case. Set slop so that the value 372930f712c9SDave Chinner * of minlen+alignment+slop doesn't go up 373030f712c9SDave Chinner * between the calls. 373130f712c9SDave Chinner */ 373230f712c9SDave Chinner if (blen > stripe_align && blen <= args.maxlen) 373330f712c9SDave Chinner nextminlen = blen - stripe_align; 373430f712c9SDave Chinner else 373530f712c9SDave Chinner nextminlen = args.minlen; 373630f712c9SDave Chinner if (nextminlen + stripe_align > args.minlen + 1) 373730f712c9SDave Chinner args.minalignslop = 373830f712c9SDave Chinner nextminlen + stripe_align - 373930f712c9SDave Chinner args.minlen - 1; 374030f712c9SDave Chinner else 374130f712c9SDave Chinner args.minalignslop = 0; 374230f712c9SDave Chinner } 374330f712c9SDave Chinner } else { 374430f712c9SDave Chinner args.alignment = 1; 374530f712c9SDave Chinner args.minalignslop = 0; 374630f712c9SDave Chinner } 374730f712c9SDave Chinner args.minleft = ap->minleft; 374830f712c9SDave Chinner args.wasdel = ap->wasdel; 37493fd129b6SDarrick J. Wong args.resv = XFS_AG_RESV_NONE; 3750292378edSDave Chinner args.datatype = ap->datatype; 3751292378edSDave Chinner if (ap->datatype & XFS_ALLOC_USERDATA_ZERO) 37523fbbbea3SDave Chinner args.ip = ap->ip; 37533fbbbea3SDave Chinner 37543fbbbea3SDave Chinner error = xfs_alloc_vextent(&args); 37553fbbbea3SDave Chinner if (error) 375630f712c9SDave Chinner return error; 37573fbbbea3SDave Chinner 375830f712c9SDave Chinner if (tryagain && args.fsbno == NULLFSBLOCK) { 375930f712c9SDave Chinner /* 376030f712c9SDave Chinner * Exact allocation failed. Now try with alignment 376130f712c9SDave Chinner * turned on. 376230f712c9SDave Chinner */ 376330f712c9SDave Chinner args.type = atype; 376430f712c9SDave Chinner args.fsbno = ap->blkno; 376530f712c9SDave Chinner args.alignment = stripe_align; 376630f712c9SDave Chinner args.minlen = nextminlen; 376730f712c9SDave Chinner args.minalignslop = 0; 376830f712c9SDave Chinner isaligned = 1; 376930f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 377030f712c9SDave Chinner return error; 377130f712c9SDave Chinner } 377230f712c9SDave Chinner if (isaligned && args.fsbno == NULLFSBLOCK) { 377330f712c9SDave Chinner /* 377430f712c9SDave Chinner * allocation failed, so turn off alignment and 377530f712c9SDave Chinner * try again. 377630f712c9SDave Chinner */ 377730f712c9SDave Chinner args.type = atype; 377830f712c9SDave Chinner args.fsbno = ap->blkno; 377930f712c9SDave Chinner args.alignment = 0; 378030f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 378130f712c9SDave Chinner return error; 378230f712c9SDave Chinner } 378330f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb && 378430f712c9SDave Chinner args.minlen > ap->minlen) { 378530f712c9SDave Chinner args.minlen = ap->minlen; 378630f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 378730f712c9SDave Chinner args.fsbno = ap->blkno; 378830f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 378930f712c9SDave Chinner return error; 379030f712c9SDave Chinner } 379130f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb) { 379230f712c9SDave Chinner args.fsbno = 0; 379330f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 379430f712c9SDave Chinner args.total = ap->minlen; 379530f712c9SDave Chinner args.minleft = 0; 379630f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 379730f712c9SDave Chinner return error; 37982c3234d1SDarrick J. Wong ap->dfops->dop_low = true; 379930f712c9SDave Chinner } 380030f712c9SDave Chinner if (args.fsbno != NULLFSBLOCK) { 380130f712c9SDave Chinner /* 380230f712c9SDave Chinner * check the allocation happened at the same or higher AG than 380330f712c9SDave Chinner * the first block that was allocated. 380430f712c9SDave Chinner */ 380530f712c9SDave Chinner ASSERT(*ap->firstblock == NULLFSBLOCK || 380630f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *ap->firstblock) == 380730f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, args.fsbno) || 38082c3234d1SDarrick J. Wong (ap->dfops->dop_low && 380930f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *ap->firstblock) < 381030f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, args.fsbno))); 381130f712c9SDave Chinner 381230f712c9SDave Chinner ap->blkno = args.fsbno; 381330f712c9SDave Chinner if (*ap->firstblock == NULLFSBLOCK) 381430f712c9SDave Chinner *ap->firstblock = args.fsbno; 381530f712c9SDave Chinner ASSERT(nullfb || fb_agno == args.agno || 38162c3234d1SDarrick J. Wong (ap->dfops->dop_low && fb_agno < args.agno)); 381730f712c9SDave Chinner ap->length = args.len; 381860b4984fSDarrick J. Wong if (!(ap->flags & XFS_BMAPI_COWFORK)) 381930f712c9SDave Chinner ap->ip->i_d.di_nblocks += args.len; 382030f712c9SDave Chinner xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); 382130f712c9SDave Chinner if (ap->wasdel) 382230f712c9SDave Chinner ap->ip->i_delayed_blks -= args.len; 382330f712c9SDave Chinner /* 382430f712c9SDave Chinner * Adjust the disk quota also. This was reserved 382530f712c9SDave Chinner * earlier. 382630f712c9SDave Chinner */ 382730f712c9SDave Chinner xfs_trans_mod_dquot_byino(ap->tp, ap->ip, 382830f712c9SDave Chinner ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT : 382930f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 383030f712c9SDave Chinner (long) args.len); 383130f712c9SDave Chinner } else { 383230f712c9SDave Chinner ap->blkno = NULLFSBLOCK; 383330f712c9SDave Chinner ap->length = 0; 383430f712c9SDave Chinner } 383530f712c9SDave Chinner return 0; 383630f712c9SDave Chinner } 383730f712c9SDave Chinner 383830f712c9SDave Chinner /* 3839f65306eaSDarrick J. Wong * For a remap operation, just "allocate" an extent at the address that the 3840f65306eaSDarrick J. Wong * caller passed in, and ensure that the AGFL is the right size. The caller 3841f65306eaSDarrick J. Wong * will then map the "allocated" extent into the file somewhere. 3842f65306eaSDarrick J. Wong */ 3843f65306eaSDarrick J. Wong STATIC int 3844f65306eaSDarrick J. Wong xfs_bmap_remap_alloc( 3845f65306eaSDarrick J. Wong struct xfs_bmalloca *ap) 3846f65306eaSDarrick J. Wong { 3847f65306eaSDarrick J. Wong struct xfs_trans *tp = ap->tp; 3848f65306eaSDarrick J. Wong struct xfs_mount *mp = tp->t_mountp; 3849f65306eaSDarrick J. Wong xfs_agblock_t bno; 3850f65306eaSDarrick J. Wong struct xfs_alloc_arg args; 3851f65306eaSDarrick J. Wong int error; 3852f65306eaSDarrick J. Wong 3853f65306eaSDarrick J. Wong /* 3854f65306eaSDarrick J. Wong * validate that the block number is legal - the enables us to detect 3855f65306eaSDarrick J. Wong * and handle a silent filesystem corruption rather than crashing. 3856f65306eaSDarrick J. Wong */ 3857f65306eaSDarrick J. Wong memset(&args, 0, sizeof(struct xfs_alloc_arg)); 3858f65306eaSDarrick J. Wong args.tp = ap->tp; 3859f65306eaSDarrick J. Wong args.mp = ap->tp->t_mountp; 3860f65306eaSDarrick J. Wong bno = *ap->firstblock; 3861f65306eaSDarrick J. Wong args.agno = XFS_FSB_TO_AGNO(mp, bno); 3862f65306eaSDarrick J. Wong args.agbno = XFS_FSB_TO_AGBNO(mp, bno); 3863f65306eaSDarrick J. Wong if (args.agno >= mp->m_sb.sb_agcount || 3864f65306eaSDarrick J. Wong args.agbno >= mp->m_sb.sb_agblocks) 3865f65306eaSDarrick J. Wong return -EFSCORRUPTED; 3866f65306eaSDarrick J. Wong 3867f65306eaSDarrick J. Wong /* "Allocate" the extent from the range we passed in. */ 3868f65306eaSDarrick J. Wong trace_xfs_bmap_remap_alloc(ap->ip, *ap->firstblock, ap->length); 3869f65306eaSDarrick J. Wong ap->blkno = bno; 3870f65306eaSDarrick J. Wong ap->ip->i_d.di_nblocks += ap->length; 3871f65306eaSDarrick J. Wong xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); 3872f65306eaSDarrick J. Wong 3873f65306eaSDarrick J. Wong /* Fix the freelist, like a real allocator does. */ 3874f65306eaSDarrick J. Wong args.datatype = ap->datatype; 3875f65306eaSDarrick J. Wong args.pag = xfs_perag_get(args.mp, args.agno); 3876f65306eaSDarrick J. Wong ASSERT(args.pag); 3877f65306eaSDarrick J. Wong 3878f65306eaSDarrick J. Wong /* 3879f65306eaSDarrick J. Wong * The freelist fixing code will decline the allocation if 3880f65306eaSDarrick J. Wong * the size and shape of the free space doesn't allow for 3881f65306eaSDarrick J. Wong * allocating the extent and updating all the metadata that 3882f65306eaSDarrick J. Wong * happens during an allocation. We're remapping, not 3883f65306eaSDarrick J. Wong * allocating, so skip that check by pretending to be freeing. 3884f65306eaSDarrick J. Wong */ 3885f65306eaSDarrick J. Wong error = xfs_alloc_fix_freelist(&args, XFS_ALLOC_FLAG_FREEING); 3886f65306eaSDarrick J. Wong xfs_perag_put(args.pag); 3887f65306eaSDarrick J. Wong if (error) 3888f65306eaSDarrick J. Wong trace_xfs_bmap_remap_alloc_error(ap->ip, error, _RET_IP_); 3889f65306eaSDarrick J. Wong return error; 3890f65306eaSDarrick J. Wong } 3891f65306eaSDarrick J. Wong 3892f65306eaSDarrick J. Wong /* 389330f712c9SDave Chinner * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. 389430f712c9SDave Chinner * It figures out where to ask the underlying allocator to put the new extent. 389530f712c9SDave Chinner */ 389630f712c9SDave Chinner STATIC int 389730f712c9SDave Chinner xfs_bmap_alloc( 389830f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 389930f712c9SDave Chinner { 3900f65306eaSDarrick J. Wong if (ap->flags & XFS_BMAPI_REMAP) 3901f65306eaSDarrick J. Wong return xfs_bmap_remap_alloc(ap); 3902292378edSDave Chinner if (XFS_IS_REALTIME_INODE(ap->ip) && 3903292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype)) 390430f712c9SDave Chinner return xfs_bmap_rtalloc(ap); 390530f712c9SDave Chinner return xfs_bmap_btalloc(ap); 390630f712c9SDave Chinner } 390730f712c9SDave Chinner 39080a0af28cSDarrick J. Wong /* Trim extent to fit a logical block range. */ 39090a0af28cSDarrick J. Wong void 39100a0af28cSDarrick J. Wong xfs_trim_extent( 39110a0af28cSDarrick J. Wong struct xfs_bmbt_irec *irec, 39120a0af28cSDarrick J. Wong xfs_fileoff_t bno, 39130a0af28cSDarrick J. Wong xfs_filblks_t len) 39140a0af28cSDarrick J. Wong { 39150a0af28cSDarrick J. Wong xfs_fileoff_t distance; 39160a0af28cSDarrick J. Wong xfs_fileoff_t end = bno + len; 39170a0af28cSDarrick J. Wong 39180a0af28cSDarrick J. Wong if (irec->br_startoff + irec->br_blockcount <= bno || 39190a0af28cSDarrick J. Wong irec->br_startoff >= end) { 39200a0af28cSDarrick J. Wong irec->br_blockcount = 0; 39210a0af28cSDarrick J. Wong return; 39220a0af28cSDarrick J. Wong } 39230a0af28cSDarrick J. Wong 39240a0af28cSDarrick J. Wong if (irec->br_startoff < bno) { 39250a0af28cSDarrick J. Wong distance = bno - irec->br_startoff; 39260a0af28cSDarrick J. Wong if (isnullstartblock(irec->br_startblock)) 39270a0af28cSDarrick J. Wong irec->br_startblock = DELAYSTARTBLOCK; 39280a0af28cSDarrick J. Wong if (irec->br_startblock != DELAYSTARTBLOCK && 39290a0af28cSDarrick J. Wong irec->br_startblock != HOLESTARTBLOCK) 39300a0af28cSDarrick J. Wong irec->br_startblock += distance; 39310a0af28cSDarrick J. Wong irec->br_startoff += distance; 39320a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 39330a0af28cSDarrick J. Wong } 39340a0af28cSDarrick J. Wong 39350a0af28cSDarrick J. Wong if (end < irec->br_startoff + irec->br_blockcount) { 39360a0af28cSDarrick J. Wong distance = irec->br_startoff + irec->br_blockcount - end; 39370a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 39380a0af28cSDarrick J. Wong } 39390a0af28cSDarrick J. Wong } 39400a0af28cSDarrick J. Wong 394130f712c9SDave Chinner /* 394230f712c9SDave Chinner * Trim the returned map to the required bounds 394330f712c9SDave Chinner */ 394430f712c9SDave Chinner STATIC void 394530f712c9SDave Chinner xfs_bmapi_trim_map( 394630f712c9SDave Chinner struct xfs_bmbt_irec *mval, 394730f712c9SDave Chinner struct xfs_bmbt_irec *got, 394830f712c9SDave Chinner xfs_fileoff_t *bno, 394930f712c9SDave Chinner xfs_filblks_t len, 395030f712c9SDave Chinner xfs_fileoff_t obno, 395130f712c9SDave Chinner xfs_fileoff_t end, 395230f712c9SDave Chinner int n, 395330f712c9SDave Chinner int flags) 395430f712c9SDave Chinner { 395530f712c9SDave Chinner if ((flags & XFS_BMAPI_ENTIRE) || 395630f712c9SDave Chinner got->br_startoff + got->br_blockcount <= obno) { 395730f712c9SDave Chinner *mval = *got; 395830f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 395930f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 396030f712c9SDave Chinner return; 396130f712c9SDave Chinner } 396230f712c9SDave Chinner 396330f712c9SDave Chinner if (obno > *bno) 396430f712c9SDave Chinner *bno = obno; 396530f712c9SDave Chinner ASSERT((*bno >= obno) || (n == 0)); 396630f712c9SDave Chinner ASSERT(*bno < end); 396730f712c9SDave Chinner mval->br_startoff = *bno; 396830f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 396930f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 397030f712c9SDave Chinner else 397130f712c9SDave Chinner mval->br_startblock = got->br_startblock + 397230f712c9SDave Chinner (*bno - got->br_startoff); 397330f712c9SDave Chinner /* 397430f712c9SDave Chinner * Return the minimum of what we got and what we asked for for 397530f712c9SDave Chinner * the length. We can use the len variable here because it is 397630f712c9SDave Chinner * modified below and we could have been there before coming 397730f712c9SDave Chinner * here if the first part of the allocation didn't overlap what 397830f712c9SDave Chinner * was asked for. 397930f712c9SDave Chinner */ 398030f712c9SDave Chinner mval->br_blockcount = XFS_FILBLKS_MIN(end - *bno, 398130f712c9SDave Chinner got->br_blockcount - (*bno - got->br_startoff)); 398230f712c9SDave Chinner mval->br_state = got->br_state; 398330f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 398430f712c9SDave Chinner return; 398530f712c9SDave Chinner } 398630f712c9SDave Chinner 398730f712c9SDave Chinner /* 398830f712c9SDave Chinner * Update and validate the extent map to return 398930f712c9SDave Chinner */ 399030f712c9SDave Chinner STATIC void 399130f712c9SDave Chinner xfs_bmapi_update_map( 399230f712c9SDave Chinner struct xfs_bmbt_irec **map, 399330f712c9SDave Chinner xfs_fileoff_t *bno, 399430f712c9SDave Chinner xfs_filblks_t *len, 399530f712c9SDave Chinner xfs_fileoff_t obno, 399630f712c9SDave Chinner xfs_fileoff_t end, 399730f712c9SDave Chinner int *n, 399830f712c9SDave Chinner int flags) 399930f712c9SDave Chinner { 400030f712c9SDave Chinner xfs_bmbt_irec_t *mval = *map; 400130f712c9SDave Chinner 400230f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || 400330f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= end)); 400430f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= *len) || 400530f712c9SDave Chinner (mval->br_startoff < obno)); 400630f712c9SDave Chinner 400730f712c9SDave Chinner *bno = mval->br_startoff + mval->br_blockcount; 400830f712c9SDave Chinner *len = end - *bno; 400930f712c9SDave Chinner if (*n > 0 && mval->br_startoff == mval[-1].br_startoff) { 401030f712c9SDave Chinner /* update previous map with new information */ 401130f712c9SDave Chinner ASSERT(mval->br_startblock == mval[-1].br_startblock); 401230f712c9SDave Chinner ASSERT(mval->br_blockcount > mval[-1].br_blockcount); 401330f712c9SDave Chinner ASSERT(mval->br_state == mval[-1].br_state); 401430f712c9SDave Chinner mval[-1].br_blockcount = mval->br_blockcount; 401530f712c9SDave Chinner mval[-1].br_state = mval->br_state; 401630f712c9SDave Chinner } else if (*n > 0 && mval->br_startblock != DELAYSTARTBLOCK && 401730f712c9SDave Chinner mval[-1].br_startblock != DELAYSTARTBLOCK && 401830f712c9SDave Chinner mval[-1].br_startblock != HOLESTARTBLOCK && 401930f712c9SDave Chinner mval->br_startblock == mval[-1].br_startblock + 402030f712c9SDave Chinner mval[-1].br_blockcount && 402130f712c9SDave Chinner ((flags & XFS_BMAPI_IGSTATE) || 402230f712c9SDave Chinner mval[-1].br_state == mval->br_state)) { 402330f712c9SDave Chinner ASSERT(mval->br_startoff == 402430f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount); 402530f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 402630f712c9SDave Chinner } else if (*n > 0 && 402730f712c9SDave Chinner mval->br_startblock == DELAYSTARTBLOCK && 402830f712c9SDave Chinner mval[-1].br_startblock == DELAYSTARTBLOCK && 402930f712c9SDave Chinner mval->br_startoff == 403030f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount) { 403130f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 403230f712c9SDave Chinner mval[-1].br_state = mval->br_state; 403330f712c9SDave Chinner } else if (!((*n == 0) && 403430f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= 403530f712c9SDave Chinner obno))) { 403630f712c9SDave Chinner mval++; 403730f712c9SDave Chinner (*n)++; 403830f712c9SDave Chinner } 403930f712c9SDave Chinner *map = mval; 404030f712c9SDave Chinner } 404130f712c9SDave Chinner 404230f712c9SDave Chinner /* 404330f712c9SDave Chinner * Map file blocks to filesystem blocks without allocation. 404430f712c9SDave Chinner */ 404530f712c9SDave Chinner int 404630f712c9SDave Chinner xfs_bmapi_read( 404730f712c9SDave Chinner struct xfs_inode *ip, 404830f712c9SDave Chinner xfs_fileoff_t bno, 404930f712c9SDave Chinner xfs_filblks_t len, 405030f712c9SDave Chinner struct xfs_bmbt_irec *mval, 405130f712c9SDave Chinner int *nmap, 405230f712c9SDave Chinner int flags) 405330f712c9SDave Chinner { 405430f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 405530f712c9SDave Chinner struct xfs_ifork *ifp; 405630f712c9SDave Chinner struct xfs_bmbt_irec got; 405730f712c9SDave Chinner xfs_fileoff_t obno; 405830f712c9SDave Chinner xfs_fileoff_t end; 4059334f3423SChristoph Hellwig xfs_extnum_t idx; 406030f712c9SDave Chinner int error; 4061334f3423SChristoph Hellwig bool eof = false; 406230f712c9SDave Chinner int n = 0; 40633993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 406430f712c9SDave Chinner 406530f712c9SDave Chinner ASSERT(*nmap >= 1); 406630f712c9SDave Chinner ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE| 40673993baebSDarrick J. Wong XFS_BMAPI_IGSTATE|XFS_BMAPI_COWFORK))); 406830f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)); 406930f712c9SDave Chinner 407030f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 407130f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 407230f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 407330f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 407430f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_read", XFS_ERRLEVEL_LOW, mp); 40752451337dSDave Chinner return -EFSCORRUPTED; 407630f712c9SDave Chinner } 407730f712c9SDave Chinner 407830f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 40792451337dSDave Chinner return -EIO; 408030f712c9SDave Chinner 4081ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapr); 408230f712c9SDave Chinner 408330f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 408430f712c9SDave Chinner 40853993baebSDarrick J. Wong /* No CoW fork? Return a hole. */ 40863993baebSDarrick J. Wong if (whichfork == XFS_COW_FORK && !ifp) { 40873993baebSDarrick J. Wong mval->br_startoff = bno; 40883993baebSDarrick J. Wong mval->br_startblock = HOLESTARTBLOCK; 40893993baebSDarrick J. Wong mval->br_blockcount = len; 40903993baebSDarrick J. Wong mval->br_state = XFS_EXT_NORM; 40913993baebSDarrick J. Wong *nmap = 1; 40923993baebSDarrick J. Wong return 0; 40933993baebSDarrick J. Wong } 40943993baebSDarrick J. Wong 409530f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 409630f712c9SDave Chinner error = xfs_iread_extents(NULL, ip, whichfork); 409730f712c9SDave Chinner if (error) 409830f712c9SDave Chinner return error; 409930f712c9SDave Chinner } 410030f712c9SDave Chinner 4101334f3423SChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &idx, &got)) 4102334f3423SChristoph Hellwig eof = true; 410330f712c9SDave Chinner end = bno + len; 410430f712c9SDave Chinner obno = bno; 410530f712c9SDave Chinner 410630f712c9SDave Chinner while (bno < end && n < *nmap) { 410730f712c9SDave Chinner /* Reading past eof, act as though there's a hole up to end. */ 410830f712c9SDave Chinner if (eof) 410930f712c9SDave Chinner got.br_startoff = end; 411030f712c9SDave Chinner if (got.br_startoff > bno) { 411130f712c9SDave Chinner /* Reading in a hole. */ 411230f712c9SDave Chinner mval->br_startoff = bno; 411330f712c9SDave Chinner mval->br_startblock = HOLESTARTBLOCK; 411430f712c9SDave Chinner mval->br_blockcount = 411530f712c9SDave Chinner XFS_FILBLKS_MIN(len, got.br_startoff - bno); 411630f712c9SDave Chinner mval->br_state = XFS_EXT_NORM; 411730f712c9SDave Chinner bno += mval->br_blockcount; 411830f712c9SDave Chinner len -= mval->br_blockcount; 411930f712c9SDave Chinner mval++; 412030f712c9SDave Chinner n++; 412130f712c9SDave Chinner continue; 412230f712c9SDave Chinner } 412330f712c9SDave Chinner 412430f712c9SDave Chinner /* set up the extent map to return. */ 412530f712c9SDave Chinner xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags); 412630f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 412730f712c9SDave Chinner 412830f712c9SDave Chinner /* If we're done, stop now. */ 412930f712c9SDave Chinner if (bno >= end || n >= *nmap) 413030f712c9SDave Chinner break; 413130f712c9SDave Chinner 413230f712c9SDave Chinner /* Else go on to the next record. */ 4133334f3423SChristoph Hellwig if (!xfs_iext_get_extent(ifp, ++idx, &got)) 4134334f3423SChristoph Hellwig eof = true; 413530f712c9SDave Chinner } 413630f712c9SDave Chinner *nmap = n; 413730f712c9SDave Chinner return 0; 413830f712c9SDave Chinner } 413930f712c9SDave Chinner 414051446f5bSChristoph Hellwig int 414130f712c9SDave Chinner xfs_bmapi_reserve_delalloc( 414230f712c9SDave Chinner struct xfs_inode *ip, 4143be51f811SDarrick J. Wong int whichfork, 414430f712c9SDave Chinner xfs_fileoff_t aoff, 414530f712c9SDave Chinner xfs_filblks_t len, 414630f712c9SDave Chinner struct xfs_bmbt_irec *got, 414730f712c9SDave Chinner xfs_extnum_t *lastx, 414830f712c9SDave Chinner int eof) 414930f712c9SDave Chinner { 415030f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 4151be51f811SDarrick J. Wong struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 415230f712c9SDave Chinner xfs_extlen_t alen; 415330f712c9SDave Chinner xfs_extlen_t indlen; 415430f712c9SDave Chinner char rt = XFS_IS_REALTIME_INODE(ip); 415530f712c9SDave Chinner xfs_extlen_t extsz; 415630f712c9SDave Chinner int error; 415730f712c9SDave Chinner 415830f712c9SDave Chinner alen = XFS_FILBLKS_MIN(len, MAXEXTLEN); 415930f712c9SDave Chinner if (!eof) 416030f712c9SDave Chinner alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff); 416130f712c9SDave Chinner 416230f712c9SDave Chinner /* Figure out the extent size, adjust alen */ 4163f7ca3522SDarrick J. Wong if (whichfork == XFS_COW_FORK) 4164f7ca3522SDarrick J. Wong extsz = xfs_get_cowextsz_hint(ip); 4165f7ca3522SDarrick J. Wong else 416630f712c9SDave Chinner extsz = xfs_get_extsz_hint(ip); 416730f712c9SDave Chinner if (extsz) { 416865c5f419SChristoph Hellwig struct xfs_bmbt_irec prev; 416965c5f419SChristoph Hellwig 417065c5f419SChristoph Hellwig if (!xfs_iext_get_extent(ifp, *lastx - 1, &prev)) 417165c5f419SChristoph Hellwig prev.br_startoff = NULLFILEOFF; 417265c5f419SChristoph Hellwig 417365c5f419SChristoph Hellwig error = xfs_bmap_extsize_align(mp, got, &prev, extsz, rt, eof, 417430f712c9SDave Chinner 1, 0, &aoff, &alen); 417530f712c9SDave Chinner ASSERT(!error); 417630f712c9SDave Chinner } 417730f712c9SDave Chinner 417830f712c9SDave Chinner if (rt) 417930f712c9SDave Chinner extsz = alen / mp->m_sb.sb_rextsize; 418030f712c9SDave Chinner 418130f712c9SDave Chinner /* 418230f712c9SDave Chinner * Make a transaction-less quota reservation for delayed allocation 418330f712c9SDave Chinner * blocks. This number gets adjusted later. We return if we haven't 418430f712c9SDave Chinner * allocated blocks already inside this loop. 418530f712c9SDave Chinner */ 418630f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(NULL, ip, (long)alen, 0, 418730f712c9SDave Chinner rt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 418830f712c9SDave Chinner if (error) 418930f712c9SDave Chinner return error; 419030f712c9SDave Chinner 419130f712c9SDave Chinner /* 419230f712c9SDave Chinner * Split changing sb for alen and indlen since they could be coming 419330f712c9SDave Chinner * from different places. 419430f712c9SDave Chinner */ 419530f712c9SDave Chinner indlen = (xfs_extlen_t)xfs_bmap_worst_indlen(ip, alen); 419630f712c9SDave Chinner ASSERT(indlen > 0); 419730f712c9SDave Chinner 419830f712c9SDave Chinner if (rt) { 4199bab98bbeSDave Chinner error = xfs_mod_frextents(mp, -((int64_t)extsz)); 420030f712c9SDave Chinner } else { 42010d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)alen), false); 420230f712c9SDave Chinner } 420330f712c9SDave Chinner 420430f712c9SDave Chinner if (error) 420530f712c9SDave Chinner goto out_unreserve_quota; 420630f712c9SDave Chinner 42070d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)indlen), false); 420830f712c9SDave Chinner if (error) 420930f712c9SDave Chinner goto out_unreserve_blocks; 421030f712c9SDave Chinner 421130f712c9SDave Chinner 421230f712c9SDave Chinner ip->i_delayed_blks += alen; 421330f712c9SDave Chinner 421430f712c9SDave Chinner got->br_startoff = aoff; 421530f712c9SDave Chinner got->br_startblock = nullstartblock(indlen); 421630f712c9SDave Chinner got->br_blockcount = alen; 421730f712c9SDave Chinner got->br_state = XFS_EXT_NORM; 4218be51f811SDarrick J. Wong xfs_bmap_add_extent_hole_delay(ip, whichfork, lastx, got); 421930f712c9SDave Chinner 422030f712c9SDave Chinner /* 422130f712c9SDave Chinner * Update our extent pointer, given that xfs_bmap_add_extent_hole_delay 422230f712c9SDave Chinner * might have merged it into one of the neighbouring ones. 422330f712c9SDave Chinner */ 422430f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, *lastx), got); 422530f712c9SDave Chinner 422630f712c9SDave Chinner ASSERT(got->br_startoff <= aoff); 422730f712c9SDave Chinner ASSERT(got->br_startoff + got->br_blockcount >= aoff + alen); 422830f712c9SDave Chinner ASSERT(isnullstartblock(got->br_startblock)); 422930f712c9SDave Chinner ASSERT(got->br_state == XFS_EXT_NORM); 423030f712c9SDave Chinner return 0; 423130f712c9SDave Chinner 423230f712c9SDave Chinner out_unreserve_blocks: 423330f712c9SDave Chinner if (rt) 4234bab98bbeSDave Chinner xfs_mod_frextents(mp, extsz); 423530f712c9SDave Chinner else 42360d485adaSDave Chinner xfs_mod_fdblocks(mp, alen, false); 423730f712c9SDave Chinner out_unreserve_quota: 423830f712c9SDave Chinner if (XFS_IS_QUOTA_ON(mp)) 423930f712c9SDave Chinner xfs_trans_unreserve_quota_nblks(NULL, ip, (long)alen, 0, rt ? 424030f712c9SDave Chinner XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 424130f712c9SDave Chinner return error; 424230f712c9SDave Chinner } 424330f712c9SDave Chinner 42447f8a058fSDave Chinner static int 42457f8a058fSDave Chinner xfs_bmapi_allocate( 424630f712c9SDave Chinner struct xfs_bmalloca *bma) 424730f712c9SDave Chinner { 424830f712c9SDave Chinner struct xfs_mount *mp = bma->ip->i_mount; 424960b4984fSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(bma->flags); 425030f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 425130f712c9SDave Chinner int tmp_logflags = 0; 425230f712c9SDave Chinner int error; 425330f712c9SDave Chinner 425430f712c9SDave Chinner ASSERT(bma->length > 0); 425530f712c9SDave Chinner 425630f712c9SDave Chinner /* 425730f712c9SDave Chinner * For the wasdelay case, we could also just allocate the stuff asked 425830f712c9SDave Chinner * for in this bmap call but that wouldn't be as good. 425930f712c9SDave Chinner */ 426030f712c9SDave Chinner if (bma->wasdel) { 426130f712c9SDave Chinner bma->length = (xfs_extlen_t)bma->got.br_blockcount; 426230f712c9SDave Chinner bma->offset = bma->got.br_startoff; 42630e8d630bSChristoph Hellwig if (bma->idx) { 426430f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx - 1), 426530f712c9SDave Chinner &bma->prev); 426630f712c9SDave Chinner } 426730f712c9SDave Chinner } else { 426830f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN); 426930f712c9SDave Chinner if (!bma->eof) 427030f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, 427130f712c9SDave Chinner bma->got.br_startoff - bma->offset); 427230f712c9SDave Chinner } 427330f712c9SDave Chinner 427430f712c9SDave Chinner /* 4275292378edSDave Chinner * Set the data type being allocated. For the data fork, the first data 4276292378edSDave Chinner * in the file is treated differently to all other allocations. For the 4277292378edSDave Chinner * attribute fork, we only need to ensure the allocated range is not on 4278292378edSDave Chinner * the busy list. 427930f712c9SDave Chinner */ 428030f712c9SDave Chinner if (!(bma->flags & XFS_BMAPI_METADATA)) { 4281292378edSDave Chinner bma->datatype = XFS_ALLOC_NOBUSY; 4282292378edSDave Chinner if (whichfork == XFS_DATA_FORK) { 4283292378edSDave Chinner if (bma->offset == 0) 4284292378edSDave Chinner bma->datatype |= XFS_ALLOC_INITIAL_USER_DATA; 4285292378edSDave Chinner else 4286292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA; 4287292378edSDave Chinner } 42883fbbbea3SDave Chinner if (bma->flags & XFS_BMAPI_ZERO) 4289292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA_ZERO; 429030f712c9SDave Chinner } 429130f712c9SDave Chinner 429230f712c9SDave Chinner bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1; 429330f712c9SDave Chinner 429430f712c9SDave Chinner /* 429530f712c9SDave Chinner * Only want to do the alignment at the eof if it is userdata and 429630f712c9SDave Chinner * allocation length is larger than a stripe unit. 429730f712c9SDave Chinner */ 429830f712c9SDave Chinner if (mp->m_dalign && bma->length >= mp->m_dalign && 429930f712c9SDave Chinner !(bma->flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) { 430030f712c9SDave Chinner error = xfs_bmap_isaeof(bma, whichfork); 430130f712c9SDave Chinner if (error) 430230f712c9SDave Chinner return error; 430330f712c9SDave Chinner } 430430f712c9SDave Chinner 430530f712c9SDave Chinner error = xfs_bmap_alloc(bma); 430630f712c9SDave Chinner if (error) 430730f712c9SDave Chinner return error; 430830f712c9SDave Chinner 43092c3234d1SDarrick J. Wong if (bma->dfops->dop_low) 431030f712c9SDave Chinner bma->minleft = 0; 431130f712c9SDave Chinner if (bma->cur) 431230f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 431330f712c9SDave Chinner if (bma->blkno == NULLFSBLOCK) 431430f712c9SDave Chinner return 0; 431530f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 431630f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork); 431730f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 43182c3234d1SDarrick J. Wong bma->cur->bc_private.b.dfops = bma->dfops; 431930f712c9SDave Chinner } 432030f712c9SDave Chinner /* 432130f712c9SDave Chinner * Bump the number of extents we've allocated 432230f712c9SDave Chinner * in this call. 432330f712c9SDave Chinner */ 432430f712c9SDave Chinner bma->nallocs++; 432530f712c9SDave Chinner 432630f712c9SDave Chinner if (bma->cur) 432730f712c9SDave Chinner bma->cur->bc_private.b.flags = 432830f712c9SDave Chinner bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 432930f712c9SDave Chinner 433030f712c9SDave Chinner bma->got.br_startoff = bma->offset; 433130f712c9SDave Chinner bma->got.br_startblock = bma->blkno; 433230f712c9SDave Chinner bma->got.br_blockcount = bma->length; 433330f712c9SDave Chinner bma->got.br_state = XFS_EXT_NORM; 433430f712c9SDave Chinner 433530f712c9SDave Chinner /* 433630f712c9SDave Chinner * A wasdelay extent has been initialized, so shouldn't be flagged 433730f712c9SDave Chinner * as unwritten. 433830f712c9SDave Chinner */ 433930f712c9SDave Chinner if (!bma->wasdel && (bma->flags & XFS_BMAPI_PREALLOC) && 434030f712c9SDave Chinner xfs_sb_version_hasextflgbit(&mp->m_sb)) 434130f712c9SDave Chinner bma->got.br_state = XFS_EXT_UNWRITTEN; 434230f712c9SDave Chinner 434330f712c9SDave Chinner if (bma->wasdel) 434460b4984fSDarrick J. Wong error = xfs_bmap_add_extent_delay_real(bma, whichfork); 434530f712c9SDave Chinner else 434630f712c9SDave Chinner error = xfs_bmap_add_extent_hole_real(bma, whichfork); 434730f712c9SDave Chinner 434830f712c9SDave Chinner bma->logflags |= tmp_logflags; 434930f712c9SDave Chinner if (error) 435030f712c9SDave Chinner return error; 435130f712c9SDave Chinner 435230f712c9SDave Chinner /* 435330f712c9SDave Chinner * Update our extent pointer, given that xfs_bmap_add_extent_delay_real 435430f712c9SDave Chinner * or xfs_bmap_add_extent_hole_real might have merged it into one of 435530f712c9SDave Chinner * the neighbouring ones. 435630f712c9SDave Chinner */ 435730f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got); 435830f712c9SDave Chinner 435930f712c9SDave Chinner ASSERT(bma->got.br_startoff <= bma->offset); 436030f712c9SDave Chinner ASSERT(bma->got.br_startoff + bma->got.br_blockcount >= 436130f712c9SDave Chinner bma->offset + bma->length); 436230f712c9SDave Chinner ASSERT(bma->got.br_state == XFS_EXT_NORM || 436330f712c9SDave Chinner bma->got.br_state == XFS_EXT_UNWRITTEN); 436430f712c9SDave Chinner return 0; 436530f712c9SDave Chinner } 436630f712c9SDave Chinner 436730f712c9SDave Chinner STATIC int 436830f712c9SDave Chinner xfs_bmapi_convert_unwritten( 436930f712c9SDave Chinner struct xfs_bmalloca *bma, 437030f712c9SDave Chinner struct xfs_bmbt_irec *mval, 437130f712c9SDave Chinner xfs_filblks_t len, 437230f712c9SDave Chinner int flags) 437330f712c9SDave Chinner { 43743993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 437530f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 437630f712c9SDave Chinner int tmp_logflags = 0; 437730f712c9SDave Chinner int error; 437830f712c9SDave Chinner 437930f712c9SDave Chinner /* check if we need to do unwritten->real conversion */ 438030f712c9SDave Chinner if (mval->br_state == XFS_EXT_UNWRITTEN && 438130f712c9SDave Chinner (flags & XFS_BMAPI_PREALLOC)) 438230f712c9SDave Chinner return 0; 438330f712c9SDave Chinner 438430f712c9SDave Chinner /* check if we need to do real->unwritten conversion */ 438530f712c9SDave Chinner if (mval->br_state == XFS_EXT_NORM && 438630f712c9SDave Chinner (flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) != 438730f712c9SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) 438830f712c9SDave Chinner return 0; 438930f712c9SDave Chinner 43903993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 43913993baebSDarrick J. Wong 439230f712c9SDave Chinner /* 439330f712c9SDave Chinner * Modify (by adding) the state flag, if writing. 439430f712c9SDave Chinner */ 439530f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 439630f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 439730f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp, 439830f712c9SDave Chinner bma->ip, whichfork); 439930f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 44002c3234d1SDarrick J. Wong bma->cur->bc_private.b.dfops = bma->dfops; 440130f712c9SDave Chinner } 440230f712c9SDave Chinner mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN) 440330f712c9SDave Chinner ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 440430f712c9SDave Chinner 44053fbbbea3SDave Chinner /* 44063fbbbea3SDave Chinner * Before insertion into the bmbt, zero the range being converted 44073fbbbea3SDave Chinner * if required. 44083fbbbea3SDave Chinner */ 44093fbbbea3SDave Chinner if (flags & XFS_BMAPI_ZERO) { 44103fbbbea3SDave Chinner error = xfs_zero_extent(bma->ip, mval->br_startblock, 44113fbbbea3SDave Chinner mval->br_blockcount); 44123fbbbea3SDave Chinner if (error) 44133fbbbea3SDave Chinner return error; 44143fbbbea3SDave Chinner } 44153fbbbea3SDave Chinner 441630f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, &bma->idx, 44172c3234d1SDarrick J. Wong &bma->cur, mval, bma->firstblock, bma->dfops, 441830f712c9SDave Chinner &tmp_logflags); 44192e588a46SBrian Foster /* 44202e588a46SBrian Foster * Log the inode core unconditionally in the unwritten extent conversion 44212e588a46SBrian Foster * path because the conversion might not have done so (e.g., if the 44222e588a46SBrian Foster * extent count hasn't changed). We need to make sure the inode is dirty 44232e588a46SBrian Foster * in the transaction for the sake of fsync(), even if nothing has 44242e588a46SBrian Foster * changed, because fsync() will not force the log for this transaction 44252e588a46SBrian Foster * unless it sees the inode pinned. 44262e588a46SBrian Foster */ 44272e588a46SBrian Foster bma->logflags |= tmp_logflags | XFS_ILOG_CORE; 442830f712c9SDave Chinner if (error) 442930f712c9SDave Chinner return error; 443030f712c9SDave Chinner 443130f712c9SDave Chinner /* 443230f712c9SDave Chinner * Update our extent pointer, given that 443330f712c9SDave Chinner * xfs_bmap_add_extent_unwritten_real might have merged it into one 443430f712c9SDave Chinner * of the neighbouring ones. 443530f712c9SDave Chinner */ 443630f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext(ifp, bma->idx), &bma->got); 443730f712c9SDave Chinner 443830f712c9SDave Chinner /* 443930f712c9SDave Chinner * We may have combined previously unwritten space with written space, 444030f712c9SDave Chinner * so generate another request. 444130f712c9SDave Chinner */ 444230f712c9SDave Chinner if (mval->br_blockcount < len) 44432451337dSDave Chinner return -EAGAIN; 444430f712c9SDave Chinner return 0; 444530f712c9SDave Chinner } 444630f712c9SDave Chinner 444730f712c9SDave Chinner /* 444830f712c9SDave Chinner * Map file blocks to filesystem blocks, and allocate blocks or convert the 444930f712c9SDave Chinner * extent state if necessary. Details behaviour is controlled by the flags 445030f712c9SDave Chinner * parameter. Only allocates blocks from a single allocation group, to avoid 445130f712c9SDave Chinner * locking problems. 445230f712c9SDave Chinner * 445330f712c9SDave Chinner * The returned value in "firstblock" from the first call in a transaction 445430f712c9SDave Chinner * must be remembered and presented to subsequent calls in "firstblock". 445530f712c9SDave Chinner * An upper bound for the number of blocks to be allocated is supplied to 445630f712c9SDave Chinner * the first call in "total"; if no allocation group has that many free 445730f712c9SDave Chinner * blocks then the call will fail (return NULLFSBLOCK in "firstblock"). 445830f712c9SDave Chinner */ 445930f712c9SDave Chinner int 446030f712c9SDave Chinner xfs_bmapi_write( 446130f712c9SDave Chinner struct xfs_trans *tp, /* transaction pointer */ 446230f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 446330f712c9SDave Chinner xfs_fileoff_t bno, /* starting file offs. mapped */ 446430f712c9SDave Chinner xfs_filblks_t len, /* length to map in file */ 446530f712c9SDave Chinner int flags, /* XFS_BMAPI_... */ 446630f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first allocated block 446730f712c9SDave Chinner controls a.g. for allocs */ 446830f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed */ 446930f712c9SDave Chinner struct xfs_bmbt_irec *mval, /* output: map values */ 447030f712c9SDave Chinner int *nmap, /* i/o: mval size/count */ 44712c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops) /* i/o: list extents to free */ 447230f712c9SDave Chinner { 447330f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 447430f712c9SDave Chinner struct xfs_ifork *ifp; 447530f712c9SDave Chinner struct xfs_bmalloca bma = { NULL }; /* args for xfs_bmap_alloc */ 447630f712c9SDave Chinner xfs_fileoff_t end; /* end of mapped file region */ 44772d58f6efSChristoph Hellwig bool eof = false; /* after the end of extents */ 447830f712c9SDave Chinner int error; /* error return */ 447930f712c9SDave Chinner int n; /* current extent index */ 448030f712c9SDave Chinner xfs_fileoff_t obno; /* old block number (offset) */ 448130f712c9SDave Chinner int whichfork; /* data or attr fork */ 448230f712c9SDave Chinner char inhole; /* current location is hole in file */ 448330f712c9SDave Chinner char wasdelay; /* old extent was delayed */ 448430f712c9SDave Chinner 448530f712c9SDave Chinner #ifdef DEBUG 448630f712c9SDave Chinner xfs_fileoff_t orig_bno; /* original block number value */ 448730f712c9SDave Chinner int orig_flags; /* original flags arg value */ 448830f712c9SDave Chinner xfs_filblks_t orig_len; /* original value of len arg */ 448930f712c9SDave Chinner struct xfs_bmbt_irec *orig_mval; /* original value of mval */ 449030f712c9SDave Chinner int orig_nmap; /* original value of *nmap */ 449130f712c9SDave Chinner 449230f712c9SDave Chinner orig_bno = bno; 449330f712c9SDave Chinner orig_len = len; 449430f712c9SDave Chinner orig_flags = flags; 449530f712c9SDave Chinner orig_mval = mval; 449630f712c9SDave Chinner orig_nmap = *nmap; 449730f712c9SDave Chinner #endif 449860b4984fSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 449930f712c9SDave Chinner 450030f712c9SDave Chinner ASSERT(*nmap >= 1); 450130f712c9SDave Chinner ASSERT(*nmap <= XFS_BMAP_MAX_NMAP); 450230f712c9SDave Chinner ASSERT(!(flags & XFS_BMAPI_IGSTATE)); 450330f712c9SDave Chinner ASSERT(tp != NULL); 450430f712c9SDave Chinner ASSERT(len > 0); 450530f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL); 450630f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 4507f65306eaSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_REMAP) || whichfork == XFS_DATA_FORK); 4508f65306eaSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_PREALLOC) || !(flags & XFS_BMAPI_REMAP)); 4509f65306eaSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_CONVERT) || !(flags & XFS_BMAPI_REMAP)); 451060b4984fSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_PREALLOC) || whichfork != XFS_COW_FORK); 451160b4984fSDarrick J. Wong ASSERT(!(flags & XFS_BMAPI_CONVERT) || whichfork != XFS_COW_FORK); 451230f712c9SDave Chinner 45133fbbbea3SDave Chinner /* zeroing is for currently only for data extents, not metadata */ 45143fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) != 45153fbbbea3SDave Chinner (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)); 45163fbbbea3SDave Chinner /* 45173fbbbea3SDave Chinner * we can allocate unwritten extents or pre-zero allocated blocks, 45183fbbbea3SDave Chinner * but it makes no sense to do both at once. This would result in 45193fbbbea3SDave Chinner * zeroing the unwritten extent twice, but it still being an 45203fbbbea3SDave Chinner * unwritten extent.... 45213fbbbea3SDave Chinner */ 45223fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) != 45233fbbbea3SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)); 45243fbbbea3SDave Chinner 452530f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 452630f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 452730f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 452830f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 452930f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_write", XFS_ERRLEVEL_LOW, mp); 45302451337dSDave Chinner return -EFSCORRUPTED; 453130f712c9SDave Chinner } 453230f712c9SDave Chinner 453330f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 45342451337dSDave Chinner return -EIO; 453530f712c9SDave Chinner 453630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 453730f712c9SDave Chinner 4538ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapw); 453930f712c9SDave Chinner 454030f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 454130f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE) 454230f712c9SDave Chinner bma.minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1; 454330f712c9SDave Chinner else 454430f712c9SDave Chinner bma.minleft = 1; 454530f712c9SDave Chinner } else { 454630f712c9SDave Chinner bma.minleft = 0; 454730f712c9SDave Chinner } 454830f712c9SDave Chinner 454930f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 455030f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 455130f712c9SDave Chinner if (error) 455230f712c9SDave Chinner goto error0; 455330f712c9SDave Chinner } 455430f712c9SDave Chinner 455530f712c9SDave Chinner n = 0; 455630f712c9SDave Chinner end = bno + len; 455730f712c9SDave Chinner obno = bno; 455830f712c9SDave Chinner 45592d58f6efSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &bma.idx, &bma.got)) 45602d58f6efSChristoph Hellwig eof = true; 45612d58f6efSChristoph Hellwig if (!xfs_iext_get_extent(ifp, bma.idx - 1, &bma.prev)) 45622d58f6efSChristoph Hellwig bma.prev.br_startoff = NULLFILEOFF; 456330f712c9SDave Chinner bma.tp = tp; 456430f712c9SDave Chinner bma.ip = ip; 456530f712c9SDave Chinner bma.total = total; 4566292378edSDave Chinner bma.datatype = 0; 45672c3234d1SDarrick J. Wong bma.dfops = dfops; 456830f712c9SDave Chinner bma.firstblock = firstblock; 456930f712c9SDave Chinner 457030f712c9SDave Chinner while (bno < end && n < *nmap) { 457130f712c9SDave Chinner inhole = eof || bma.got.br_startoff > bno; 457230f712c9SDave Chinner wasdelay = !inhole && isnullstartblock(bma.got.br_startblock); 457330f712c9SDave Chinner 457430f712c9SDave Chinner /* 4575f65306eaSDarrick J. Wong * Make sure we only reflink into a hole. 4576f65306eaSDarrick J. Wong */ 4577f65306eaSDarrick J. Wong if (flags & XFS_BMAPI_REMAP) 4578f65306eaSDarrick J. Wong ASSERT(inhole); 457960b4984fSDarrick J. Wong if (flags & XFS_BMAPI_COWFORK) 458060b4984fSDarrick J. Wong ASSERT(!inhole); 4581f65306eaSDarrick J. Wong 4582f65306eaSDarrick J. Wong /* 458330f712c9SDave Chinner * First, deal with the hole before the allocated space 458430f712c9SDave Chinner * that we found, if any. 458530f712c9SDave Chinner */ 458630f712c9SDave Chinner if (inhole || wasdelay) { 458730f712c9SDave Chinner bma.eof = eof; 458830f712c9SDave Chinner bma.conv = !!(flags & XFS_BMAPI_CONVERT); 458930f712c9SDave Chinner bma.wasdel = wasdelay; 459030f712c9SDave Chinner bma.offset = bno; 459130f712c9SDave Chinner bma.flags = flags; 459230f712c9SDave Chinner 459330f712c9SDave Chinner /* 459430f712c9SDave Chinner * There's a 32/64 bit type mismatch between the 459530f712c9SDave Chinner * allocation length request (which can be 64 bits in 459630f712c9SDave Chinner * length) and the bma length request, which is 459730f712c9SDave Chinner * xfs_extlen_t and therefore 32 bits. Hence we have to 459830f712c9SDave Chinner * check for 32-bit overflows and handle them here. 459930f712c9SDave Chinner */ 460030f712c9SDave Chinner if (len > (xfs_filblks_t)MAXEXTLEN) 460130f712c9SDave Chinner bma.length = MAXEXTLEN; 460230f712c9SDave Chinner else 460330f712c9SDave Chinner bma.length = len; 460430f712c9SDave Chinner 460530f712c9SDave Chinner ASSERT(len > 0); 460630f712c9SDave Chinner ASSERT(bma.length > 0); 460730f712c9SDave Chinner error = xfs_bmapi_allocate(&bma); 460830f712c9SDave Chinner if (error) 460930f712c9SDave Chinner goto error0; 461030f712c9SDave Chinner if (bma.blkno == NULLFSBLOCK) 461130f712c9SDave Chinner break; 4612174edb0eSDarrick J. Wong 4613174edb0eSDarrick J. Wong /* 4614174edb0eSDarrick J. Wong * If this is a CoW allocation, record the data in 4615174edb0eSDarrick J. Wong * the refcount btree for orphan recovery. 4616174edb0eSDarrick J. Wong */ 4617174edb0eSDarrick J. Wong if (whichfork == XFS_COW_FORK) { 4618174edb0eSDarrick J. Wong error = xfs_refcount_alloc_cow_extent(mp, dfops, 4619174edb0eSDarrick J. Wong bma.blkno, bma.length); 4620174edb0eSDarrick J. Wong if (error) 4621174edb0eSDarrick J. Wong goto error0; 4622174edb0eSDarrick J. Wong } 462330f712c9SDave Chinner } 462430f712c9SDave Chinner 462530f712c9SDave Chinner /* Deal with the allocated space we found. */ 462630f712c9SDave Chinner xfs_bmapi_trim_map(mval, &bma.got, &bno, len, obno, 462730f712c9SDave Chinner end, n, flags); 462830f712c9SDave Chinner 462930f712c9SDave Chinner /* Execute unwritten extent conversion if necessary */ 463030f712c9SDave Chinner error = xfs_bmapi_convert_unwritten(&bma, mval, len, flags); 46312451337dSDave Chinner if (error == -EAGAIN) 463230f712c9SDave Chinner continue; 463330f712c9SDave Chinner if (error) 463430f712c9SDave Chinner goto error0; 463530f712c9SDave Chinner 463630f712c9SDave Chinner /* update the extent map to return */ 463730f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 463830f712c9SDave Chinner 463930f712c9SDave Chinner /* 464030f712c9SDave Chinner * If we're done, stop now. Stop when we've allocated 464130f712c9SDave Chinner * XFS_BMAP_MAX_NMAP extents no matter what. Otherwise 464230f712c9SDave Chinner * the transaction may get too big. 464330f712c9SDave Chinner */ 464430f712c9SDave Chinner if (bno >= end || n >= *nmap || bma.nallocs >= *nmap) 464530f712c9SDave Chinner break; 464630f712c9SDave Chinner 464730f712c9SDave Chinner /* Else go on to the next record. */ 464830f712c9SDave Chinner bma.prev = bma.got; 46492d58f6efSChristoph Hellwig if (!xfs_iext_get_extent(ifp, ++bma.idx, &bma.got)) 46502d58f6efSChristoph Hellwig eof = true; 465130f712c9SDave Chinner } 465230f712c9SDave Chinner *nmap = n; 465330f712c9SDave Chinner 465430f712c9SDave Chinner /* 465530f712c9SDave Chinner * Transform from btree to extents, give it cur. 465630f712c9SDave Chinner */ 465730f712c9SDave Chinner if (xfs_bmap_wants_extents(ip, whichfork)) { 465830f712c9SDave Chinner int tmp_logflags = 0; 465930f712c9SDave Chinner 466030f712c9SDave Chinner ASSERT(bma.cur); 466130f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, bma.cur, 466230f712c9SDave Chinner &tmp_logflags, whichfork); 466330f712c9SDave Chinner bma.logflags |= tmp_logflags; 466430f712c9SDave Chinner if (error) 466530f712c9SDave Chinner goto error0; 466630f712c9SDave Chinner } 466730f712c9SDave Chinner 466830f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE || 466930f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 467030f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork)); 467130f712c9SDave Chinner error = 0; 467230f712c9SDave Chinner error0: 467330f712c9SDave Chinner /* 467430f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 467530f712c9SDave Chinner * logging the extent records if we've converted to btree format. 467630f712c9SDave Chinner */ 467730f712c9SDave Chinner if ((bma.logflags & xfs_ilog_fext(whichfork)) && 467830f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 467930f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fext(whichfork); 468030f712c9SDave Chinner else if ((bma.logflags & xfs_ilog_fbroot(whichfork)) && 468130f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 468230f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fbroot(whichfork); 468330f712c9SDave Chinner /* 468430f712c9SDave Chinner * Log whatever the flags say, even if error. Otherwise we might miss 468530f712c9SDave Chinner * detecting a case where the data is changed, there's an error, 468630f712c9SDave Chinner * and it's not logged so we don't shutdown when we should. 468730f712c9SDave Chinner */ 468830f712c9SDave Chinner if (bma.logflags) 468930f712c9SDave Chinner xfs_trans_log_inode(tp, ip, bma.logflags); 469030f712c9SDave Chinner 469130f712c9SDave Chinner if (bma.cur) { 469230f712c9SDave Chinner if (!error) { 469330f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 469430f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *firstblock) == 469530f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, 469630f712c9SDave Chinner bma.cur->bc_private.b.firstblock) || 46972c3234d1SDarrick J. Wong (dfops->dop_low && 469830f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, *firstblock) < 469930f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, 470030f712c9SDave Chinner bma.cur->bc_private.b.firstblock))); 470130f712c9SDave Chinner *firstblock = bma.cur->bc_private.b.firstblock; 470230f712c9SDave Chinner } 470330f712c9SDave Chinner xfs_btree_del_cursor(bma.cur, 470430f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 470530f712c9SDave Chinner } 470630f712c9SDave Chinner if (!error) 470730f712c9SDave Chinner xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval, 470830f712c9SDave Chinner orig_nmap, *nmap); 470930f712c9SDave Chinner return error; 471030f712c9SDave Chinner } 471130f712c9SDave Chinner 471230f712c9SDave Chinner /* 4713a9bd24acSBrian Foster * When a delalloc extent is split (e.g., due to a hole punch), the original 4714a9bd24acSBrian Foster * indlen reservation must be shared across the two new extents that are left 4715a9bd24acSBrian Foster * behind. 4716a9bd24acSBrian Foster * 4717a9bd24acSBrian Foster * Given the original reservation and the worst case indlen for the two new 4718a9bd24acSBrian Foster * extents (as calculated by xfs_bmap_worst_indlen()), split the original 4719d34999c9SBrian Foster * reservation fairly across the two new extents. If necessary, steal available 4720d34999c9SBrian Foster * blocks from a deleted extent to make up a reservation deficiency (e.g., if 4721d34999c9SBrian Foster * ores == 1). The number of stolen blocks is returned. The availability and 4722d34999c9SBrian Foster * subsequent accounting of stolen blocks is the responsibility of the caller. 4723a9bd24acSBrian Foster */ 4724d34999c9SBrian Foster static xfs_filblks_t 4725a9bd24acSBrian Foster xfs_bmap_split_indlen( 4726a9bd24acSBrian Foster xfs_filblks_t ores, /* original res. */ 4727a9bd24acSBrian Foster xfs_filblks_t *indlen1, /* ext1 worst indlen */ 4728d34999c9SBrian Foster xfs_filblks_t *indlen2, /* ext2 worst indlen */ 4729d34999c9SBrian Foster xfs_filblks_t avail) /* stealable blocks */ 4730a9bd24acSBrian Foster { 4731a9bd24acSBrian Foster xfs_filblks_t len1 = *indlen1; 4732a9bd24acSBrian Foster xfs_filblks_t len2 = *indlen2; 4733a9bd24acSBrian Foster xfs_filblks_t nres = len1 + len2; /* new total res. */ 4734d34999c9SBrian Foster xfs_filblks_t stolen = 0; 4735a9bd24acSBrian Foster 4736a9bd24acSBrian Foster /* 4737d34999c9SBrian Foster * Steal as many blocks as we can to try and satisfy the worst case 4738d34999c9SBrian Foster * indlen for both new extents. 4739d34999c9SBrian Foster */ 4740d34999c9SBrian Foster while (nres > ores && avail) { 4741d34999c9SBrian Foster nres--; 4742d34999c9SBrian Foster avail--; 4743d34999c9SBrian Foster stolen++; 4744d34999c9SBrian Foster } 4745d34999c9SBrian Foster 4746d34999c9SBrian Foster /* 4747d34999c9SBrian Foster * The only blocks available are those reserved for the original 4748d34999c9SBrian Foster * extent and what we can steal from the extent being removed. 4749d34999c9SBrian Foster * If this still isn't enough to satisfy the combined 4750d34999c9SBrian Foster * requirements for the two new extents, skim blocks off of each 4751d34999c9SBrian Foster * of the new reservations until they match what is available. 4752a9bd24acSBrian Foster */ 4753a9bd24acSBrian Foster while (nres > ores) { 4754a9bd24acSBrian Foster if (len1) { 4755a9bd24acSBrian Foster len1--; 4756a9bd24acSBrian Foster nres--; 4757a9bd24acSBrian Foster } 4758a9bd24acSBrian Foster if (nres == ores) 4759a9bd24acSBrian Foster break; 4760a9bd24acSBrian Foster if (len2) { 4761a9bd24acSBrian Foster len2--; 4762a9bd24acSBrian Foster nres--; 4763a9bd24acSBrian Foster } 4764a9bd24acSBrian Foster } 4765a9bd24acSBrian Foster 4766a9bd24acSBrian Foster *indlen1 = len1; 4767a9bd24acSBrian Foster *indlen2 = len2; 4768d34999c9SBrian Foster 4769d34999c9SBrian Foster return stolen; 4770a9bd24acSBrian Foster } 4771a9bd24acSBrian Foster 4772fa5c836cSChristoph Hellwig int 4773fa5c836cSChristoph Hellwig xfs_bmap_del_extent_delay( 4774fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4775fa5c836cSChristoph Hellwig int whichfork, 4776fa5c836cSChristoph Hellwig xfs_extnum_t *idx, 4777fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4778fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4779fa5c836cSChristoph Hellwig { 4780fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4781fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 4782fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4783fa5c836cSChristoph Hellwig int64_t da_old, da_new, da_diff = 0; 4784fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4785fa5c836cSChristoph Hellwig xfs_filblks_t got_indlen, new_indlen, stolen; 4786fa5c836cSChristoph Hellwig int error = 0, state = 0; 4787fa5c836cSChristoph Hellwig bool isrt; 4788fa5c836cSChristoph Hellwig 4789fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4790fa5c836cSChristoph Hellwig 4791fa5c836cSChristoph Hellwig isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 4792fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4793fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4794fa5c836cSChristoph Hellwig da_old = startblockval(got->br_startblock); 4795fa5c836cSChristoph Hellwig da_new = 0; 4796fa5c836cSChristoph Hellwig 4797fa5c836cSChristoph Hellwig ASSERT(*idx >= 0); 47985d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 4799fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4800fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4801fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4802fa5c836cSChristoph Hellwig 4803fa5c836cSChristoph Hellwig if (isrt) { 4804fa5c836cSChristoph Hellwig int64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount); 4805fa5c836cSChristoph Hellwig 4806fa5c836cSChristoph Hellwig do_div(rtexts, mp->m_sb.sb_rextsize); 4807fa5c836cSChristoph Hellwig xfs_mod_frextents(mp, rtexts); 4808fa5c836cSChristoph Hellwig } 4809fa5c836cSChristoph Hellwig 4810fa5c836cSChristoph Hellwig /* 4811fa5c836cSChristoph Hellwig * Update the inode delalloc counter now and wait to update the 4812fa5c836cSChristoph Hellwig * sb counters as we might have to borrow some blocks for the 4813fa5c836cSChristoph Hellwig * indirect block accounting. 4814fa5c836cSChristoph Hellwig */ 4815fa5c836cSChristoph Hellwig xfs_trans_reserve_quota_nblks(NULL, ip, -((long)del->br_blockcount), 0, 4816fa5c836cSChristoph Hellwig isrt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 4817fa5c836cSChristoph Hellwig ip->i_delayed_blks -= del->br_blockcount; 4818fa5c836cSChristoph Hellwig 4819fa5c836cSChristoph Hellwig if (whichfork == XFS_COW_FORK) 4820fa5c836cSChristoph Hellwig state |= BMAP_COWFORK; 4821fa5c836cSChristoph Hellwig 4822fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 4823fa5c836cSChristoph Hellwig state |= BMAP_LEFT_CONTIG; 4824fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 4825fa5c836cSChristoph Hellwig state |= BMAP_RIGHT_CONTIG; 4826fa5c836cSChristoph Hellwig 4827fa5c836cSChristoph Hellwig switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 4828fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 4829fa5c836cSChristoph Hellwig /* 4830fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4831fa5c836cSChristoph Hellwig */ 4832fa5c836cSChristoph Hellwig xfs_iext_remove(ip, *idx, 1, state); 4833fa5c836cSChristoph Hellwig --*idx; 4834fa5c836cSChristoph Hellwig break; 4835fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG: 4836fa5c836cSChristoph Hellwig /* 4837fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4838fa5c836cSChristoph Hellwig */ 4839fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4840fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4841fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4842fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4843fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4844fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4845fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4846fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4847fa5c836cSChristoph Hellwig break; 4848fa5c836cSChristoph Hellwig case BMAP_RIGHT_CONTIG: 4849fa5c836cSChristoph Hellwig /* 4850fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4851fa5c836cSChristoph Hellwig */ 4852fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4853fa5c836cSChristoph Hellwig got->br_blockcount = got->br_blockcount - del->br_blockcount; 4854fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4855fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4856fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4857fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4858fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4859fa5c836cSChristoph Hellwig break; 4860fa5c836cSChristoph Hellwig case 0: 4861fa5c836cSChristoph Hellwig /* 4862fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4863fa5c836cSChristoph Hellwig * 4864fa5c836cSChristoph Hellwig * Distribute the original indlen reservation across the two new 4865fa5c836cSChristoph Hellwig * extents. Steal blocks from the deleted extent if necessary. 4866fa5c836cSChristoph Hellwig * Stealing blocks simply fudges the fdblocks accounting below. 4867fa5c836cSChristoph Hellwig * Warn if either of the new indlen reservations is zero as this 4868fa5c836cSChristoph Hellwig * can lead to delalloc problems. 4869fa5c836cSChristoph Hellwig */ 4870fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4871fa5c836cSChristoph Hellwig 4872fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4873fa5c836cSChristoph Hellwig got_indlen = xfs_bmap_worst_indlen(ip, got->br_blockcount); 4874fa5c836cSChristoph Hellwig 4875fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4876fa5c836cSChristoph Hellwig new_indlen = xfs_bmap_worst_indlen(ip, new.br_blockcount); 4877fa5c836cSChristoph Hellwig 4878fa5c836cSChristoph Hellwig WARN_ON_ONCE(!got_indlen || !new_indlen); 4879fa5c836cSChristoph Hellwig stolen = xfs_bmap_split_indlen(da_old, &got_indlen, &new_indlen, 4880fa5c836cSChristoph Hellwig del->br_blockcount); 4881fa5c836cSChristoph Hellwig 4882fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)got_indlen); 4883fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4884fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, 0, _THIS_IP_); 4885fa5c836cSChristoph Hellwig 4886fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4887fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4888fa5c836cSChristoph Hellwig new.br_startblock = nullstartblock((int)new_indlen); 4889fa5c836cSChristoph Hellwig 4890fa5c836cSChristoph Hellwig ++*idx; 4891fa5c836cSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, &new, state); 4892fa5c836cSChristoph Hellwig 4893fa5c836cSChristoph Hellwig da_new = got_indlen + new_indlen - stolen; 4894fa5c836cSChristoph Hellwig del->br_blockcount -= stolen; 4895fa5c836cSChristoph Hellwig break; 4896fa5c836cSChristoph Hellwig } 4897fa5c836cSChristoph Hellwig 4898fa5c836cSChristoph Hellwig ASSERT(da_old >= da_new); 4899fa5c836cSChristoph Hellwig da_diff = da_old - da_new; 4900fa5c836cSChristoph Hellwig if (!isrt) 4901fa5c836cSChristoph Hellwig da_diff += del->br_blockcount; 4902fa5c836cSChristoph Hellwig if (da_diff) 4903fa5c836cSChristoph Hellwig xfs_mod_fdblocks(mp, da_diff, false); 4904fa5c836cSChristoph Hellwig return error; 4905fa5c836cSChristoph Hellwig } 4906fa5c836cSChristoph Hellwig 4907fa5c836cSChristoph Hellwig void 4908fa5c836cSChristoph Hellwig xfs_bmap_del_extent_cow( 4909fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4910fa5c836cSChristoph Hellwig xfs_extnum_t *idx, 4911fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4912fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4913fa5c836cSChristoph Hellwig { 4914fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4915fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK); 4916fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4917fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4918fa5c836cSChristoph Hellwig int state = BMAP_COWFORK; 4919fa5c836cSChristoph Hellwig 4920fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4921fa5c836cSChristoph Hellwig 4922fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4923fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4924fa5c836cSChristoph Hellwig 4925fa5c836cSChristoph Hellwig ASSERT(*idx >= 0); 49265d829300SEric Sandeen ASSERT(*idx <= xfs_iext_count(ifp)); 4927fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4928fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4929fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4930fa5c836cSChristoph Hellwig ASSERT(!isnullstartblock(got->br_startblock)); 4931fa5c836cSChristoph Hellwig 4932fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 4933fa5c836cSChristoph Hellwig state |= BMAP_LEFT_CONTIG; 4934fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 4935fa5c836cSChristoph Hellwig state |= BMAP_RIGHT_CONTIG; 4936fa5c836cSChristoph Hellwig 4937fa5c836cSChristoph Hellwig switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 4938fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 4939fa5c836cSChristoph Hellwig /* 4940fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4941fa5c836cSChristoph Hellwig */ 4942fa5c836cSChristoph Hellwig xfs_iext_remove(ip, *idx, 1, state); 4943fa5c836cSChristoph Hellwig --*idx; 4944fa5c836cSChristoph Hellwig break; 4945fa5c836cSChristoph Hellwig case BMAP_LEFT_CONTIG: 4946fa5c836cSChristoph Hellwig /* 4947fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4948fa5c836cSChristoph Hellwig */ 4949fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4950fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4951fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4952fa5c836cSChristoph Hellwig got->br_startblock = del->br_startblock + del->br_blockcount; 4953fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4954fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4955fa5c836cSChristoph Hellwig break; 4956fa5c836cSChristoph Hellwig case BMAP_RIGHT_CONTIG: 4957fa5c836cSChristoph Hellwig /* 4958fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4959fa5c836cSChristoph Hellwig */ 4960fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4961fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4962fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4963fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4964fa5c836cSChristoph Hellwig break; 4965fa5c836cSChristoph Hellwig case 0: 4966fa5c836cSChristoph Hellwig /* 4967fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4968fa5c836cSChristoph Hellwig */ 4969fa5c836cSChristoph Hellwig trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 4970fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4971fa5c836cSChristoph Hellwig xfs_bmbt_set_all(xfs_iext_get_ext(ifp, *idx), got); 4972fa5c836cSChristoph Hellwig trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 4973fa5c836cSChristoph Hellwig 4974fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4975fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4976fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4977fa5c836cSChristoph Hellwig new.br_startblock = del->br_startblock + del->br_blockcount; 4978fa5c836cSChristoph Hellwig 4979fa5c836cSChristoph Hellwig ++*idx; 4980fa5c836cSChristoph Hellwig xfs_iext_insert(ip, *idx, 1, &new, state); 4981fa5c836cSChristoph Hellwig break; 4982fa5c836cSChristoph Hellwig } 4983fa5c836cSChristoph Hellwig } 4984fa5c836cSChristoph Hellwig 4985a9bd24acSBrian Foster /* 498630f712c9SDave Chinner * Called by xfs_bmapi to update file extent records and the btree 498730f712c9SDave Chinner * after removing space (or undoing a delayed allocation). 498830f712c9SDave Chinner */ 498930f712c9SDave Chinner STATIC int /* error */ 499030f712c9SDave Chinner xfs_bmap_del_extent( 499130f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 499230f712c9SDave Chinner xfs_trans_t *tp, /* current transaction pointer */ 499330f712c9SDave Chinner xfs_extnum_t *idx, /* extent number to update/delete */ 49942c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, /* list of extents to be freed */ 499530f712c9SDave Chinner xfs_btree_cur_t *cur, /* if null, not a btree */ 499630f712c9SDave Chinner xfs_bmbt_irec_t *del, /* data to remove from extents */ 499730f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 49984847acf8SDarrick J. Wong int whichfork, /* data or attr fork */ 49994847acf8SDarrick J. Wong int bflags) /* bmapi flags */ 500030f712c9SDave Chinner { 500130f712c9SDave Chinner xfs_filblks_t da_new; /* new delay-alloc indirect blocks */ 500230f712c9SDave Chinner xfs_filblks_t da_old; /* old delay-alloc indirect blocks */ 500330f712c9SDave Chinner xfs_fsblock_t del_endblock=0; /* first block past del */ 500430f712c9SDave Chinner xfs_fileoff_t del_endoff; /* first offset past del */ 500530f712c9SDave Chinner int delay; /* current block is delayed allocated */ 500630f712c9SDave Chinner int do_fx; /* free extent at end of routine */ 500730f712c9SDave Chinner xfs_bmbt_rec_host_t *ep; /* current extent entry pointer */ 500830f712c9SDave Chinner int error; /* error return value */ 500930f712c9SDave Chinner int flags; /* inode logging flags */ 501030f712c9SDave Chinner xfs_bmbt_irec_t got; /* current extent entry */ 501130f712c9SDave Chinner xfs_fileoff_t got_endoff; /* first offset past got */ 501230f712c9SDave Chinner int i; /* temp state */ 501330f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 501430f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 501530f712c9SDave Chinner xfs_filblks_t nblks; /* quota/sb block count */ 501630f712c9SDave Chinner xfs_bmbt_irec_t new; /* new record to be inserted */ 501730f712c9SDave Chinner /* REFERENCED */ 501830f712c9SDave Chinner uint qfield; /* quota field to update */ 501930f712c9SDave Chinner xfs_filblks_t temp; /* for indirect length calculations */ 502030f712c9SDave Chinner xfs_filblks_t temp2; /* for indirect length calculations */ 502130f712c9SDave Chinner int state = 0; 502230f712c9SDave Chinner 5023ff6d6af2SBill O'Donnell mp = ip->i_mount; 5024ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_del_exlist); 502530f712c9SDave Chinner 502630f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK) 502730f712c9SDave Chinner state |= BMAP_ATTRFORK; 50283993baebSDarrick J. Wong else if (whichfork == XFS_COW_FORK) 50293993baebSDarrick J. Wong state |= BMAP_COWFORK; 503030f712c9SDave Chinner 503130f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 50325d829300SEric Sandeen ASSERT((*idx >= 0) && (*idx < xfs_iext_count(ifp))); 503330f712c9SDave Chinner ASSERT(del->br_blockcount > 0); 503430f712c9SDave Chinner ep = xfs_iext_get_ext(ifp, *idx); 503530f712c9SDave Chinner xfs_bmbt_get_all(ep, &got); 503630f712c9SDave Chinner ASSERT(got.br_startoff <= del->br_startoff); 503730f712c9SDave Chinner del_endoff = del->br_startoff + del->br_blockcount; 503830f712c9SDave Chinner got_endoff = got.br_startoff + got.br_blockcount; 503930f712c9SDave Chinner ASSERT(got_endoff >= del_endoff); 504030f712c9SDave Chinner delay = isnullstartblock(got.br_startblock); 504130f712c9SDave Chinner ASSERT(isnullstartblock(del->br_startblock) == delay); 504230f712c9SDave Chinner flags = 0; 504330f712c9SDave Chinner qfield = 0; 504430f712c9SDave Chinner error = 0; 504530f712c9SDave Chinner /* 504630f712c9SDave Chinner * If deleting a real allocation, must free up the disk space. 504730f712c9SDave Chinner */ 504830f712c9SDave Chinner if (!delay) { 504930f712c9SDave Chinner flags = XFS_ILOG_CORE; 505030f712c9SDave Chinner /* 505130f712c9SDave Chinner * Realtime allocation. Free it and record di_nblocks update. 505230f712c9SDave Chinner */ 505330f712c9SDave Chinner if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) { 505430f712c9SDave Chinner xfs_fsblock_t bno; 505530f712c9SDave Chinner xfs_filblks_t len; 505630f712c9SDave Chinner 505730f712c9SDave Chinner ASSERT(do_mod(del->br_blockcount, 505830f712c9SDave Chinner mp->m_sb.sb_rextsize) == 0); 505930f712c9SDave Chinner ASSERT(do_mod(del->br_startblock, 506030f712c9SDave Chinner mp->m_sb.sb_rextsize) == 0); 506130f712c9SDave Chinner bno = del->br_startblock; 506230f712c9SDave Chinner len = del->br_blockcount; 506330f712c9SDave Chinner do_div(bno, mp->m_sb.sb_rextsize); 506430f712c9SDave Chinner do_div(len, mp->m_sb.sb_rextsize); 506530f712c9SDave Chinner error = xfs_rtfree_extent(tp, bno, (xfs_extlen_t)len); 506630f712c9SDave Chinner if (error) 506730f712c9SDave Chinner goto done; 506830f712c9SDave Chinner do_fx = 0; 506930f712c9SDave Chinner nblks = len * mp->m_sb.sb_rextsize; 507030f712c9SDave Chinner qfield = XFS_TRANS_DQ_RTBCOUNT; 507130f712c9SDave Chinner } 507230f712c9SDave Chinner /* 507330f712c9SDave Chinner * Ordinary allocation. 507430f712c9SDave Chinner */ 507530f712c9SDave Chinner else { 507630f712c9SDave Chinner do_fx = 1; 507730f712c9SDave Chinner nblks = del->br_blockcount; 507830f712c9SDave Chinner qfield = XFS_TRANS_DQ_BCOUNT; 507930f712c9SDave Chinner } 508030f712c9SDave Chinner /* 508130f712c9SDave Chinner * Set up del_endblock and cur for later. 508230f712c9SDave Chinner */ 508330f712c9SDave Chinner del_endblock = del->br_startblock + del->br_blockcount; 508430f712c9SDave Chinner if (cur) { 508530f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, got.br_startoff, 508630f712c9SDave Chinner got.br_startblock, got.br_blockcount, 508730f712c9SDave Chinner &i))) 508830f712c9SDave Chinner goto done; 5089c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 509030f712c9SDave Chinner } 509130f712c9SDave Chinner da_old = da_new = 0; 509230f712c9SDave Chinner } else { 509330f712c9SDave Chinner da_old = startblockval(got.br_startblock); 509430f712c9SDave Chinner da_new = 0; 509530f712c9SDave Chinner nblks = 0; 509630f712c9SDave Chinner do_fx = 0; 509730f712c9SDave Chinner } 5098340785ccSDarrick J. Wong 509930f712c9SDave Chinner /* 510030f712c9SDave Chinner * Set flag value to use in switch statement. 510130f712c9SDave Chinner * Left-contig is 2, right-contig is 1. 510230f712c9SDave Chinner */ 510330f712c9SDave Chinner switch (((got.br_startoff == del->br_startoff) << 1) | 510430f712c9SDave Chinner (got_endoff == del_endoff)) { 510530f712c9SDave Chinner case 3: 510630f712c9SDave Chinner /* 510730f712c9SDave Chinner * Matches the whole extent. Delete the entry. 510830f712c9SDave Chinner */ 51094862cfe8SDarrick J. Wong trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 511030f712c9SDave Chinner xfs_iext_remove(ip, *idx, 1, 511130f712c9SDave Chinner whichfork == XFS_ATTR_FORK ? BMAP_ATTRFORK : 0); 511230f712c9SDave Chinner --*idx; 511330f712c9SDave Chinner if (delay) 511430f712c9SDave Chinner break; 511530f712c9SDave Chinner 511630f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 511730f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 511830f712c9SDave Chinner flags |= XFS_ILOG_CORE; 511930f712c9SDave Chinner if (!cur) { 512030f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 512130f712c9SDave Chinner break; 512230f712c9SDave Chinner } 512330f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 512430f712c9SDave Chinner goto done; 5125c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 512630f712c9SDave Chinner break; 512730f712c9SDave Chinner 512830f712c9SDave Chinner case 2: 512930f712c9SDave Chinner /* 513030f712c9SDave Chinner * Deleting the first part of the extent. 513130f712c9SDave Chinner */ 513230f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 513330f712c9SDave Chinner xfs_bmbt_set_startoff(ep, del_endoff); 513430f712c9SDave Chinner temp = got.br_blockcount - del->br_blockcount; 513530f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 513630f712c9SDave Chinner if (delay) { 513730f712c9SDave Chinner temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 513830f712c9SDave Chinner da_old); 513930f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 514030f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 514130f712c9SDave Chinner da_new = temp; 514230f712c9SDave Chinner break; 514330f712c9SDave Chinner } 514430f712c9SDave Chinner xfs_bmbt_set_startblock(ep, del_endblock); 514530f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 514630f712c9SDave Chinner if (!cur) { 514730f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 514830f712c9SDave Chinner break; 514930f712c9SDave Chinner } 515030f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, del_endoff, del_endblock, 515130f712c9SDave Chinner got.br_blockcount - del->br_blockcount, 515230f712c9SDave Chinner got.br_state))) 515330f712c9SDave Chinner goto done; 515430f712c9SDave Chinner break; 515530f712c9SDave Chinner 515630f712c9SDave Chinner case 1: 515730f712c9SDave Chinner /* 515830f712c9SDave Chinner * Deleting the last part of the extent. 515930f712c9SDave Chinner */ 516030f712c9SDave Chinner temp = got.br_blockcount - del->br_blockcount; 516130f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 516230f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 516330f712c9SDave Chinner if (delay) { 516430f712c9SDave Chinner temp = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 516530f712c9SDave Chinner da_old); 516630f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 516730f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 516830f712c9SDave Chinner da_new = temp; 516930f712c9SDave Chinner break; 517030f712c9SDave Chinner } 517130f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 517230f712c9SDave Chinner if (!cur) { 517330f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 517430f712c9SDave Chinner break; 517530f712c9SDave Chinner } 517630f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, got.br_startoff, 517730f712c9SDave Chinner got.br_startblock, 517830f712c9SDave Chinner got.br_blockcount - del->br_blockcount, 517930f712c9SDave Chinner got.br_state))) 518030f712c9SDave Chinner goto done; 518130f712c9SDave Chinner break; 518230f712c9SDave Chinner 518330f712c9SDave Chinner case 0: 518430f712c9SDave Chinner /* 518530f712c9SDave Chinner * Deleting the middle of the extent. 518630f712c9SDave Chinner */ 518730f712c9SDave Chinner temp = del->br_startoff - got.br_startoff; 518830f712c9SDave Chinner trace_xfs_bmap_pre_update(ip, *idx, state, _THIS_IP_); 518930f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, temp); 519030f712c9SDave Chinner new.br_startoff = del_endoff; 519130f712c9SDave Chinner temp2 = got_endoff - del_endoff; 519230f712c9SDave Chinner new.br_blockcount = temp2; 519330f712c9SDave Chinner new.br_state = got.br_state; 519430f712c9SDave Chinner if (!delay) { 519530f712c9SDave Chinner new.br_startblock = del_endblock; 519630f712c9SDave Chinner flags |= XFS_ILOG_CORE; 519730f712c9SDave Chinner if (cur) { 519830f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 519930f712c9SDave Chinner got.br_startoff, 520030f712c9SDave Chinner got.br_startblock, temp, 520130f712c9SDave Chinner got.br_state))) 520230f712c9SDave Chinner goto done; 520330f712c9SDave Chinner if ((error = xfs_btree_increment(cur, 0, &i))) 520430f712c9SDave Chinner goto done; 520530f712c9SDave Chinner cur->bc_rec.b = new; 520630f712c9SDave Chinner error = xfs_btree_insert(cur, &i); 52072451337dSDave Chinner if (error && error != -ENOSPC) 520830f712c9SDave Chinner goto done; 520930f712c9SDave Chinner /* 521030f712c9SDave Chinner * If get no-space back from btree insert, 521130f712c9SDave Chinner * it tried a split, and we have a zero 521230f712c9SDave Chinner * block reservation. 521330f712c9SDave Chinner * Fix up our state and return the error. 521430f712c9SDave Chinner */ 52152451337dSDave Chinner if (error == -ENOSPC) { 521630f712c9SDave Chinner /* 521730f712c9SDave Chinner * Reset the cursor, don't trust 521830f712c9SDave Chinner * it after any insert operation. 521930f712c9SDave Chinner */ 522030f712c9SDave Chinner if ((error = xfs_bmbt_lookup_eq(cur, 522130f712c9SDave Chinner got.br_startoff, 522230f712c9SDave Chinner got.br_startblock, 522330f712c9SDave Chinner temp, &i))) 522430f712c9SDave Chinner goto done; 5225c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 5226c29aad41SEric Sandeen i == 1, done); 522730f712c9SDave Chinner /* 522830f712c9SDave Chinner * Update the btree record back 522930f712c9SDave Chinner * to the original value. 523030f712c9SDave Chinner */ 523130f712c9SDave Chinner if ((error = xfs_bmbt_update(cur, 523230f712c9SDave Chinner got.br_startoff, 523330f712c9SDave Chinner got.br_startblock, 523430f712c9SDave Chinner got.br_blockcount, 523530f712c9SDave Chinner got.br_state))) 523630f712c9SDave Chinner goto done; 523730f712c9SDave Chinner /* 523830f712c9SDave Chinner * Reset the extent record back 523930f712c9SDave Chinner * to the original value. 524030f712c9SDave Chinner */ 524130f712c9SDave Chinner xfs_bmbt_set_blockcount(ep, 524230f712c9SDave Chinner got.br_blockcount); 524330f712c9SDave Chinner flags = 0; 52442451337dSDave Chinner error = -ENOSPC; 524530f712c9SDave Chinner goto done; 524630f712c9SDave Chinner } 5247c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 524830f712c9SDave Chinner } else 524930f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 525030f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 525130f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 525230f712c9SDave Chinner } else { 5253d34999c9SBrian Foster xfs_filblks_t stolen; 525430f712c9SDave Chinner ASSERT(whichfork == XFS_DATA_FORK); 5255a9bd24acSBrian Foster 5256a9bd24acSBrian Foster /* 5257a9bd24acSBrian Foster * Distribute the original indlen reservation across the 5258d34999c9SBrian Foster * two new extents. Steal blocks from the deleted extent 5259d34999c9SBrian Foster * if necessary. Stealing blocks simply fudges the 5260d34999c9SBrian Foster * fdblocks accounting in xfs_bunmapi(). 5261a9bd24acSBrian Foster */ 5262a9bd24acSBrian Foster temp = xfs_bmap_worst_indlen(ip, got.br_blockcount); 5263a9bd24acSBrian Foster temp2 = xfs_bmap_worst_indlen(ip, new.br_blockcount); 5264d34999c9SBrian Foster stolen = xfs_bmap_split_indlen(da_old, &temp, &temp2, 5265d34999c9SBrian Foster del->br_blockcount); 5266d34999c9SBrian Foster da_new = temp + temp2 - stolen; 5267d34999c9SBrian Foster del->br_blockcount -= stolen; 5268a9bd24acSBrian Foster 5269a9bd24acSBrian Foster /* 5270d34999c9SBrian Foster * Set the reservation for each extent. Warn if either 5271d34999c9SBrian Foster * is zero as this can lead to delalloc problems. 5272a9bd24acSBrian Foster */ 5273d34999c9SBrian Foster WARN_ON_ONCE(!temp || !temp2); 527430f712c9SDave Chinner xfs_bmbt_set_startblock(ep, nullstartblock((int)temp)); 527530f712c9SDave Chinner new.br_startblock = nullstartblock((int)temp2); 527630f712c9SDave Chinner } 527730f712c9SDave Chinner trace_xfs_bmap_post_update(ip, *idx, state, _THIS_IP_); 527830f712c9SDave Chinner xfs_iext_insert(ip, *idx + 1, 1, &new, state); 527930f712c9SDave Chinner ++*idx; 528030f712c9SDave Chinner break; 528130f712c9SDave Chinner } 52829c194644SDarrick J. Wong 52839c194644SDarrick J. Wong /* remove reverse mapping */ 52849c194644SDarrick J. Wong if (!delay) { 52859c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, del); 52869c194644SDarrick J. Wong if (error) 52879c194644SDarrick J. Wong goto done; 52889c194644SDarrick J. Wong } 52899c194644SDarrick J. Wong 529030f712c9SDave Chinner /* 529130f712c9SDave Chinner * If we need to, add to list of extents to delete. 529230f712c9SDave Chinner */ 52934847acf8SDarrick J. Wong if (do_fx && !(bflags & XFS_BMAPI_REMAP)) { 529462aab20fSDarrick J. Wong if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) { 529562aab20fSDarrick J. Wong error = xfs_refcount_decrease_extent(mp, dfops, del); 529662aab20fSDarrick J. Wong if (error) 529762aab20fSDarrick J. Wong goto done; 529862aab20fSDarrick J. Wong } else 52992c3234d1SDarrick J. Wong xfs_bmap_add_free(mp, dfops, del->br_startblock, 5300340785ccSDarrick J. Wong del->br_blockcount, NULL); 530162aab20fSDarrick J. Wong } 530262aab20fSDarrick J. Wong 530330f712c9SDave Chinner /* 530430f712c9SDave Chinner * Adjust inode # blocks in the file. 530530f712c9SDave Chinner */ 530630f712c9SDave Chinner if (nblks) 530730f712c9SDave Chinner ip->i_d.di_nblocks -= nblks; 530830f712c9SDave Chinner /* 530930f712c9SDave Chinner * Adjust quota data. 531030f712c9SDave Chinner */ 53114847acf8SDarrick J. Wong if (qfield && !(bflags & XFS_BMAPI_REMAP)) 531230f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks); 531330f712c9SDave Chinner 531430f712c9SDave Chinner /* 531530f712c9SDave Chinner * Account for change in delayed indirect blocks. 531630f712c9SDave Chinner * Nothing to do for disk quota accounting here. 531730f712c9SDave Chinner */ 531830f712c9SDave Chinner ASSERT(da_old >= da_new); 53190d485adaSDave Chinner if (da_old > da_new) 53200d485adaSDave Chinner xfs_mod_fdblocks(mp, (int64_t)(da_old - da_new), false); 532130f712c9SDave Chinner done: 532230f712c9SDave Chinner *logflagsp = flags; 532330f712c9SDave Chinner return error; 532430f712c9SDave Chinner } 532530f712c9SDave Chinner 532630f712c9SDave Chinner /* 532730f712c9SDave Chinner * Unmap (remove) blocks from a file. 532830f712c9SDave Chinner * If nexts is nonzero then the number of extents to remove is limited to 532930f712c9SDave Chinner * that value. If not all extents in the block range can be removed then 533030f712c9SDave Chinner * *done is set. 533130f712c9SDave Chinner */ 533230f712c9SDave Chinner int /* error */ 53334453593bSDarrick J. Wong __xfs_bunmapi( 533430f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 533530f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 533630f712c9SDave Chinner xfs_fileoff_t bno, /* starting offset to unmap */ 53374453593bSDarrick J. Wong xfs_filblks_t *rlen, /* i/o: amount remaining */ 533830f712c9SDave Chinner int flags, /* misc flags */ 533930f712c9SDave Chinner xfs_extnum_t nexts, /* number of extents max */ 534030f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first allocated block 534130f712c9SDave Chinner controls a.g. for allocs */ 53424453593bSDarrick J. Wong struct xfs_defer_ops *dfops) /* i/o: deferred updates */ 534330f712c9SDave Chinner { 534430f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 534530f712c9SDave Chinner xfs_bmbt_irec_t del; /* extent being deleted */ 534630f712c9SDave Chinner int error; /* error return value */ 534730f712c9SDave Chinner xfs_extnum_t extno; /* extent number in list */ 534830f712c9SDave Chinner xfs_bmbt_irec_t got; /* current extent record */ 534930f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 535030f712c9SDave Chinner int isrt; /* freeing in rt area */ 535130f712c9SDave Chinner xfs_extnum_t lastx; /* last extent index used */ 535230f712c9SDave Chinner int logflags; /* transaction logging flags */ 535330f712c9SDave Chinner xfs_extlen_t mod; /* rt extent offset */ 535430f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 535530f712c9SDave Chinner xfs_fileoff_t start; /* first file offset deleted */ 535630f712c9SDave Chinner int tmp_logflags; /* partial logging flags */ 535730f712c9SDave Chinner int wasdel; /* was a delayed alloc extent */ 535830f712c9SDave Chinner int whichfork; /* data or attribute fork */ 535930f712c9SDave Chinner xfs_fsblock_t sum; 53604453593bSDarrick J. Wong xfs_filblks_t len = *rlen; /* length to unmap in file */ 536130f712c9SDave Chinner 536230f712c9SDave Chinner trace_xfs_bunmap(ip, bno, len, flags, _RET_IP_); 536330f712c9SDave Chinner 53643993baebSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 53653993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 536630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 536730f712c9SDave Chinner if (unlikely( 536830f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 536930f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { 537030f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bunmapi", XFS_ERRLEVEL_LOW, 537130f712c9SDave Chinner ip->i_mount); 53722451337dSDave Chinner return -EFSCORRUPTED; 537330f712c9SDave Chinner } 537430f712c9SDave Chinner mp = ip->i_mount; 537530f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 53762451337dSDave Chinner return -EIO; 537730f712c9SDave Chinner 537830f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 537930f712c9SDave Chinner ASSERT(len > 0); 538030f712c9SDave Chinner ASSERT(nexts >= 0); 538130f712c9SDave Chinner 538230f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 538330f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 538430f712c9SDave Chinner return error; 53855d829300SEric Sandeen if (xfs_iext_count(ifp) == 0) { 53864453593bSDarrick J. Wong *rlen = 0; 538730f712c9SDave Chinner return 0; 538830f712c9SDave Chinner } 5389ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_unmap); 539030f712c9SDave Chinner isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 539130f712c9SDave Chinner start = bno; 539230f712c9SDave Chinner bno = start + len - 1; 539330f712c9SDave Chinner 539430f712c9SDave Chinner /* 539530f712c9SDave Chinner * Check to see if the given block number is past the end of the 539630f712c9SDave Chinner * file, back up to the last block if so... 539730f712c9SDave Chinner */ 53987efc7945SChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &lastx, &got)) { 53997efc7945SChristoph Hellwig ASSERT(lastx > 0); 54007efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, --lastx, &got); 540130f712c9SDave Chinner bno = got.br_startoff + got.br_blockcount - 1; 540230f712c9SDave Chinner } 54037efc7945SChristoph Hellwig 540430f712c9SDave Chinner logflags = 0; 540530f712c9SDave Chinner if (ifp->if_flags & XFS_IFBROOT) { 540630f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 540730f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 540830f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 54092c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 541030f712c9SDave Chinner cur->bc_private.b.flags = 0; 541130f712c9SDave Chinner } else 541230f712c9SDave Chinner cur = NULL; 541330f712c9SDave Chinner 541430f712c9SDave Chinner if (isrt) { 541530f712c9SDave Chinner /* 541630f712c9SDave Chinner * Synchronize by locking the bitmap inode. 541730f712c9SDave Chinner */ 5418f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL|XFS_ILOCK_RTBITMAP); 541930f712c9SDave Chinner xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL); 5420f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL|XFS_ILOCK_RTSUM); 5421f4a0660dSDarrick J. Wong xfs_trans_ijoin(tp, mp->m_rsumip, XFS_ILOCK_EXCL); 542230f712c9SDave Chinner } 542330f712c9SDave Chinner 542430f712c9SDave Chinner extno = 0; 542530f712c9SDave Chinner while (bno != (xfs_fileoff_t)-1 && bno >= start && lastx >= 0 && 542630f712c9SDave Chinner (nexts == 0 || extno < nexts)) { 542730f712c9SDave Chinner /* 542830f712c9SDave Chinner * Is the found extent after a hole in which bno lives? 542930f712c9SDave Chinner * Just back up to the previous extent, if so. 543030f712c9SDave Chinner */ 543130f712c9SDave Chinner if (got.br_startoff > bno) { 543230f712c9SDave Chinner if (--lastx < 0) 543330f712c9SDave Chinner break; 54347efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 543530f712c9SDave Chinner } 543630f712c9SDave Chinner /* 543730f712c9SDave Chinner * Is the last block of this extent before the range 543830f712c9SDave Chinner * we're supposed to delete? If so, we're done. 543930f712c9SDave Chinner */ 544030f712c9SDave Chinner bno = XFS_FILEOFF_MIN(bno, 544130f712c9SDave Chinner got.br_startoff + got.br_blockcount - 1); 544230f712c9SDave Chinner if (bno < start) 544330f712c9SDave Chinner break; 544430f712c9SDave Chinner /* 544530f712c9SDave Chinner * Then deal with the (possibly delayed) allocated space 544630f712c9SDave Chinner * we found. 544730f712c9SDave Chinner */ 544830f712c9SDave Chinner del = got; 544930f712c9SDave Chinner wasdel = isnullstartblock(del.br_startblock); 545030f712c9SDave Chinner if (got.br_startoff < start) { 545130f712c9SDave Chinner del.br_startoff = start; 545230f712c9SDave Chinner del.br_blockcount -= start - got.br_startoff; 545330f712c9SDave Chinner if (!wasdel) 545430f712c9SDave Chinner del.br_startblock += start - got.br_startoff; 545530f712c9SDave Chinner } 545630f712c9SDave Chinner if (del.br_startoff + del.br_blockcount > bno + 1) 545730f712c9SDave Chinner del.br_blockcount = bno + 1 - del.br_startoff; 545830f712c9SDave Chinner sum = del.br_startblock + del.br_blockcount; 545930f712c9SDave Chinner if (isrt && 546030f712c9SDave Chinner (mod = do_mod(sum, mp->m_sb.sb_rextsize))) { 546130f712c9SDave Chinner /* 546230f712c9SDave Chinner * Realtime extent not lined up at the end. 546330f712c9SDave Chinner * The extent could have been split into written 546430f712c9SDave Chinner * and unwritten pieces, or we could just be 546530f712c9SDave Chinner * unmapping part of it. But we can't really 546630f712c9SDave Chinner * get rid of part of a realtime extent. 546730f712c9SDave Chinner */ 546830f712c9SDave Chinner if (del.br_state == XFS_EXT_UNWRITTEN || 546930f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 547030f712c9SDave Chinner /* 547130f712c9SDave Chinner * This piece is unwritten, or we're not 547230f712c9SDave Chinner * using unwritten extents. Skip over it. 547330f712c9SDave Chinner */ 547430f712c9SDave Chinner ASSERT(bno >= mod); 547530f712c9SDave Chinner bno -= mod > del.br_blockcount ? 547630f712c9SDave Chinner del.br_blockcount : mod; 547730f712c9SDave Chinner if (bno < got.br_startoff) { 547830f712c9SDave Chinner if (--lastx >= 0) 547930f712c9SDave Chinner xfs_bmbt_get_all(xfs_iext_get_ext( 548030f712c9SDave Chinner ifp, lastx), &got); 548130f712c9SDave Chinner } 548230f712c9SDave Chinner continue; 548330f712c9SDave Chinner } 548430f712c9SDave Chinner /* 548530f712c9SDave Chinner * It's written, turn it unwritten. 548630f712c9SDave Chinner * This is better than zeroing it. 548730f712c9SDave Chinner */ 548830f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 5489a7e5d03bSChristoph Hellwig ASSERT(tp->t_blk_res > 0); 549030f712c9SDave Chinner /* 549130f712c9SDave Chinner * If this spans a realtime extent boundary, 549230f712c9SDave Chinner * chop it back to the start of the one we end at. 549330f712c9SDave Chinner */ 549430f712c9SDave Chinner if (del.br_blockcount > mod) { 549530f712c9SDave Chinner del.br_startoff += del.br_blockcount - mod; 549630f712c9SDave Chinner del.br_startblock += del.br_blockcount - mod; 549730f712c9SDave Chinner del.br_blockcount = mod; 549830f712c9SDave Chinner } 549930f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 550030f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, ip, 55012c3234d1SDarrick J. Wong &lastx, &cur, &del, firstblock, dfops, 550230f712c9SDave Chinner &logflags); 550330f712c9SDave Chinner if (error) 550430f712c9SDave Chinner goto error0; 550530f712c9SDave Chinner goto nodelete; 550630f712c9SDave Chinner } 550730f712c9SDave Chinner if (isrt && (mod = do_mod(del.br_startblock, mp->m_sb.sb_rextsize))) { 550830f712c9SDave Chinner /* 550930f712c9SDave Chinner * Realtime extent is lined up at the end but not 551030f712c9SDave Chinner * at the front. We'll get rid of full extents if 551130f712c9SDave Chinner * we can. 551230f712c9SDave Chinner */ 551330f712c9SDave Chinner mod = mp->m_sb.sb_rextsize - mod; 551430f712c9SDave Chinner if (del.br_blockcount > mod) { 551530f712c9SDave Chinner del.br_blockcount -= mod; 551630f712c9SDave Chinner del.br_startoff += mod; 551730f712c9SDave Chinner del.br_startblock += mod; 551830f712c9SDave Chinner } else if ((del.br_startoff == start && 551930f712c9SDave Chinner (del.br_state == XFS_EXT_UNWRITTEN || 5520a7e5d03bSChristoph Hellwig tp->t_blk_res == 0)) || 552130f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 552230f712c9SDave Chinner /* 552330f712c9SDave Chinner * Can't make it unwritten. There isn't 552430f712c9SDave Chinner * a full extent here so just skip it. 552530f712c9SDave Chinner */ 552630f712c9SDave Chinner ASSERT(bno >= del.br_blockcount); 552730f712c9SDave Chinner bno -= del.br_blockcount; 55287efc7945SChristoph Hellwig if (got.br_startoff > bno && --lastx >= 0) 55297efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 553030f712c9SDave Chinner continue; 553130f712c9SDave Chinner } else if (del.br_state == XFS_EXT_UNWRITTEN) { 55327efc7945SChristoph Hellwig struct xfs_bmbt_irec prev; 55337efc7945SChristoph Hellwig 553430f712c9SDave Chinner /* 553530f712c9SDave Chinner * This one is already unwritten. 553630f712c9SDave Chinner * It must have a written left neighbor. 553730f712c9SDave Chinner * Unwrite the killed part of that one and 553830f712c9SDave Chinner * try again. 553930f712c9SDave Chinner */ 554030f712c9SDave Chinner ASSERT(lastx > 0); 55417efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx - 1, &prev); 554230f712c9SDave Chinner ASSERT(prev.br_state == XFS_EXT_NORM); 554330f712c9SDave Chinner ASSERT(!isnullstartblock(prev.br_startblock)); 554430f712c9SDave Chinner ASSERT(del.br_startblock == 554530f712c9SDave Chinner prev.br_startblock + prev.br_blockcount); 554630f712c9SDave Chinner if (prev.br_startoff < start) { 554730f712c9SDave Chinner mod = start - prev.br_startoff; 554830f712c9SDave Chinner prev.br_blockcount -= mod; 554930f712c9SDave Chinner prev.br_startblock += mod; 555030f712c9SDave Chinner prev.br_startoff = start; 555130f712c9SDave Chinner } 555230f712c9SDave Chinner prev.br_state = XFS_EXT_UNWRITTEN; 555330f712c9SDave Chinner lastx--; 555430f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 555530f712c9SDave Chinner ip, &lastx, &cur, &prev, 55562c3234d1SDarrick J. Wong firstblock, dfops, &logflags); 555730f712c9SDave Chinner if (error) 555830f712c9SDave Chinner goto error0; 555930f712c9SDave Chinner goto nodelete; 556030f712c9SDave Chinner } else { 556130f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 556230f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 556330f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 556430f712c9SDave Chinner ip, &lastx, &cur, &del, 55652c3234d1SDarrick J. Wong firstblock, dfops, &logflags); 556630f712c9SDave Chinner if (error) 556730f712c9SDave Chinner goto error0; 556830f712c9SDave Chinner goto nodelete; 556930f712c9SDave Chinner } 557030f712c9SDave Chinner } 557130f712c9SDave Chinner 557230f712c9SDave Chinner /* 557330f712c9SDave Chinner * If it's the case where the directory code is running 557430f712c9SDave Chinner * with no block reservation, and the deleted block is in 557530f712c9SDave Chinner * the middle of its extent, and the resulting insert 557630f712c9SDave Chinner * of an extent would cause transformation to btree format, 557730f712c9SDave Chinner * then reject it. The calling code will then swap 557830f712c9SDave Chinner * blocks around instead. 557930f712c9SDave Chinner * We have to do this now, rather than waiting for the 558030f712c9SDave Chinner * conversion to btree format, since the transaction 558130f712c9SDave Chinner * will be dirty. 558230f712c9SDave Chinner */ 5583a7e5d03bSChristoph Hellwig if (!wasdel && tp->t_blk_res == 0 && 558430f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 558530f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) >= /* Note the >= */ 558630f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork) && 558730f712c9SDave Chinner del.br_startoff > got.br_startoff && 558830f712c9SDave Chinner del.br_startoff + del.br_blockcount < 558930f712c9SDave Chinner got.br_startoff + got.br_blockcount) { 55902451337dSDave Chinner error = -ENOSPC; 559130f712c9SDave Chinner goto error0; 559230f712c9SDave Chinner } 5593b2706a05SBrian Foster 5594b2706a05SBrian Foster /* 5595b2706a05SBrian Foster * Unreserve quota and update realtime free space, if 5596b2706a05SBrian Foster * appropriate. If delayed allocation, update the inode delalloc 5597b2706a05SBrian Foster * counter now and wait to update the sb counters as 5598b2706a05SBrian Foster * xfs_bmap_del_extent() might need to borrow some blocks. 5599b2706a05SBrian Foster */ 5600b2706a05SBrian Foster if (wasdel) { 5601b2706a05SBrian Foster ASSERT(startblockval(del.br_startblock) > 0); 5602b2706a05SBrian Foster if (isrt) { 5603b2706a05SBrian Foster xfs_filblks_t rtexts; 5604b2706a05SBrian Foster 5605b2706a05SBrian Foster rtexts = XFS_FSB_TO_B(mp, del.br_blockcount); 5606b2706a05SBrian Foster do_div(rtexts, mp->m_sb.sb_rextsize); 5607b2706a05SBrian Foster xfs_mod_frextents(mp, (int64_t)rtexts); 5608b2706a05SBrian Foster (void)xfs_trans_reserve_quota_nblks(NULL, 5609b2706a05SBrian Foster ip, -((long)del.br_blockcount), 0, 5610b2706a05SBrian Foster XFS_QMOPT_RES_RTBLKS); 5611b2706a05SBrian Foster } else { 5612b2706a05SBrian Foster (void)xfs_trans_reserve_quota_nblks(NULL, 5613b2706a05SBrian Foster ip, -((long)del.br_blockcount), 0, 5614b2706a05SBrian Foster XFS_QMOPT_RES_REGBLKS); 5615b2706a05SBrian Foster } 5616b2706a05SBrian Foster ip->i_delayed_blks -= del.br_blockcount; 5617b2706a05SBrian Foster if (cur) 5618b2706a05SBrian Foster cur->bc_private.b.flags |= 5619b2706a05SBrian Foster XFS_BTCUR_BPRV_WASDEL; 5620b2706a05SBrian Foster } else if (cur) 5621b2706a05SBrian Foster cur->bc_private.b.flags &= ~XFS_BTCUR_BPRV_WASDEL; 5622b2706a05SBrian Foster 56232c3234d1SDarrick J. Wong error = xfs_bmap_del_extent(ip, tp, &lastx, dfops, cur, &del, 56244847acf8SDarrick J. Wong &tmp_logflags, whichfork, flags); 562530f712c9SDave Chinner logflags |= tmp_logflags; 562630f712c9SDave Chinner if (error) 562730f712c9SDave Chinner goto error0; 5628b2706a05SBrian Foster 5629b2706a05SBrian Foster if (!isrt && wasdel) 5630b2706a05SBrian Foster xfs_mod_fdblocks(mp, (int64_t)del.br_blockcount, false); 5631b2706a05SBrian Foster 563230f712c9SDave Chinner bno = del.br_startoff - 1; 563330f712c9SDave Chinner nodelete: 563430f712c9SDave Chinner /* 563530f712c9SDave Chinner * If not done go on to the next (previous) record. 563630f712c9SDave Chinner */ 563730f712c9SDave Chinner if (bno != (xfs_fileoff_t)-1 && bno >= start) { 563830f712c9SDave Chinner if (lastx >= 0) { 56397efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 56407efc7945SChristoph Hellwig if (got.br_startoff > bno && --lastx >= 0) 56417efc7945SChristoph Hellwig xfs_iext_get_extent(ifp, lastx, &got); 564230f712c9SDave Chinner } 564330f712c9SDave Chinner extno++; 564430f712c9SDave Chinner } 564530f712c9SDave Chinner } 56464453593bSDarrick J. Wong if (bno == (xfs_fileoff_t)-1 || bno < start || lastx < 0) 56474453593bSDarrick J. Wong *rlen = 0; 56484453593bSDarrick J. Wong else 56494453593bSDarrick J. Wong *rlen = bno - start + 1; 565030f712c9SDave Chinner 565130f712c9SDave Chinner /* 565230f712c9SDave Chinner * Convert to a btree if necessary. 565330f712c9SDave Chinner */ 565430f712c9SDave Chinner if (xfs_bmap_needs_btree(ip, whichfork)) { 565530f712c9SDave Chinner ASSERT(cur == NULL); 56562c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstblock, dfops, 565730f712c9SDave Chinner &cur, 0, &tmp_logflags, whichfork); 565830f712c9SDave Chinner logflags |= tmp_logflags; 565930f712c9SDave Chinner if (error) 566030f712c9SDave Chinner goto error0; 566130f712c9SDave Chinner } 566230f712c9SDave Chinner /* 566330f712c9SDave Chinner * transform from btree to extents, give it cur 566430f712c9SDave Chinner */ 566530f712c9SDave Chinner else if (xfs_bmap_wants_extents(ip, whichfork)) { 566630f712c9SDave Chinner ASSERT(cur != NULL); 566730f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags, 566830f712c9SDave Chinner whichfork); 566930f712c9SDave Chinner logflags |= tmp_logflags; 567030f712c9SDave Chinner if (error) 567130f712c9SDave Chinner goto error0; 567230f712c9SDave Chinner } 567330f712c9SDave Chinner /* 567430f712c9SDave Chinner * transform from extents to local? 567530f712c9SDave Chinner */ 567630f712c9SDave Chinner error = 0; 567730f712c9SDave Chinner error0: 567830f712c9SDave Chinner /* 567930f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 568030f712c9SDave Chinner * logging the extent records if we've converted to btree format. 568130f712c9SDave Chinner */ 568230f712c9SDave Chinner if ((logflags & xfs_ilog_fext(whichfork)) && 568330f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 568430f712c9SDave Chinner logflags &= ~xfs_ilog_fext(whichfork); 568530f712c9SDave Chinner else if ((logflags & xfs_ilog_fbroot(whichfork)) && 568630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 568730f712c9SDave Chinner logflags &= ~xfs_ilog_fbroot(whichfork); 568830f712c9SDave Chinner /* 568930f712c9SDave Chinner * Log inode even in the error case, if the transaction 569030f712c9SDave Chinner * is dirty we'll need to shut down the filesystem. 569130f712c9SDave Chinner */ 569230f712c9SDave Chinner if (logflags) 569330f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 569430f712c9SDave Chinner if (cur) { 569530f712c9SDave Chinner if (!error) { 569630f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock; 569730f712c9SDave Chinner cur->bc_private.b.allocated = 0; 569830f712c9SDave Chinner } 569930f712c9SDave Chinner xfs_btree_del_cursor(cur, 570030f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 570130f712c9SDave Chinner } 570230f712c9SDave Chinner return error; 570330f712c9SDave Chinner } 570430f712c9SDave Chinner 57054453593bSDarrick J. Wong /* Unmap a range of a file. */ 57064453593bSDarrick J. Wong int 57074453593bSDarrick J. Wong xfs_bunmapi( 57084453593bSDarrick J. Wong xfs_trans_t *tp, 57094453593bSDarrick J. Wong struct xfs_inode *ip, 57104453593bSDarrick J. Wong xfs_fileoff_t bno, 57114453593bSDarrick J. Wong xfs_filblks_t len, 57124453593bSDarrick J. Wong int flags, 57134453593bSDarrick J. Wong xfs_extnum_t nexts, 57144453593bSDarrick J. Wong xfs_fsblock_t *firstblock, 57154453593bSDarrick J. Wong struct xfs_defer_ops *dfops, 57164453593bSDarrick J. Wong int *done) 57174453593bSDarrick J. Wong { 57184453593bSDarrick J. Wong int error; 57194453593bSDarrick J. Wong 57204453593bSDarrick J. Wong error = __xfs_bunmapi(tp, ip, bno, &len, flags, nexts, firstblock, 57214453593bSDarrick J. Wong dfops); 57224453593bSDarrick J. Wong *done = (len == 0); 57234453593bSDarrick J. Wong return error; 57244453593bSDarrick J. Wong } 57254453593bSDarrick J. Wong 572630f712c9SDave Chinner /* 5727ddb19e31SBrian Foster * Determine whether an extent shift can be accomplished by a merge with the 5728ddb19e31SBrian Foster * extent that precedes the target hole of the shift. 5729ddb19e31SBrian Foster */ 5730ddb19e31SBrian Foster STATIC bool 5731ddb19e31SBrian Foster xfs_bmse_can_merge( 5732ddb19e31SBrian Foster struct xfs_bmbt_irec *left, /* preceding extent */ 5733ddb19e31SBrian Foster struct xfs_bmbt_irec *got, /* current extent to shift */ 5734ddb19e31SBrian Foster xfs_fileoff_t shift) /* shift fsb */ 5735ddb19e31SBrian Foster { 5736ddb19e31SBrian Foster xfs_fileoff_t startoff; 5737ddb19e31SBrian Foster 5738ddb19e31SBrian Foster startoff = got->br_startoff - shift; 5739ddb19e31SBrian Foster 5740ddb19e31SBrian Foster /* 5741ddb19e31SBrian Foster * The extent, once shifted, must be adjacent in-file and on-disk with 5742ddb19e31SBrian Foster * the preceding extent. 5743ddb19e31SBrian Foster */ 5744ddb19e31SBrian Foster if ((left->br_startoff + left->br_blockcount != startoff) || 5745ddb19e31SBrian Foster (left->br_startblock + left->br_blockcount != got->br_startblock) || 5746ddb19e31SBrian Foster (left->br_state != got->br_state) || 5747ddb19e31SBrian Foster (left->br_blockcount + got->br_blockcount > MAXEXTLEN)) 5748ddb19e31SBrian Foster return false; 5749ddb19e31SBrian Foster 5750ddb19e31SBrian Foster return true; 5751ddb19e31SBrian Foster } 5752ddb19e31SBrian Foster 5753ddb19e31SBrian Foster /* 5754ddb19e31SBrian Foster * A bmap extent shift adjusts the file offset of an extent to fill a preceding 5755ddb19e31SBrian Foster * hole in the file. If an extent shift would result in the extent being fully 5756ddb19e31SBrian Foster * adjacent to the extent that currently precedes the hole, we can merge with 5757ddb19e31SBrian Foster * the preceding extent rather than do the shift. 5758ddb19e31SBrian Foster * 5759ddb19e31SBrian Foster * This function assumes the caller has verified a shift-by-merge is possible 5760ddb19e31SBrian Foster * with the provided extents via xfs_bmse_can_merge(). 5761ddb19e31SBrian Foster */ 5762ddb19e31SBrian Foster STATIC int 5763ddb19e31SBrian Foster xfs_bmse_merge( 5764ddb19e31SBrian Foster struct xfs_inode *ip, 5765ddb19e31SBrian Foster int whichfork, 5766ddb19e31SBrian Foster xfs_fileoff_t shift, /* shift fsb */ 5767ddb19e31SBrian Foster int current_ext, /* idx of gotp */ 5768ddb19e31SBrian Foster struct xfs_bmbt_rec_host *gotp, /* extent to shift */ 5769ddb19e31SBrian Foster struct xfs_bmbt_rec_host *leftp, /* preceding extent */ 5770ddb19e31SBrian Foster struct xfs_btree_cur *cur, 5771ddb19e31SBrian Foster int *logflags) /* output */ 5772ddb19e31SBrian Foster { 5773ddb19e31SBrian Foster struct xfs_bmbt_irec got; 5774ddb19e31SBrian Foster struct xfs_bmbt_irec left; 5775ddb19e31SBrian Foster xfs_filblks_t blockcount; 5776ddb19e31SBrian Foster int error, i; 57775fb5aeeeSEric Sandeen struct xfs_mount *mp = ip->i_mount; 5778ddb19e31SBrian Foster 5779ddb19e31SBrian Foster xfs_bmbt_get_all(gotp, &got); 5780ddb19e31SBrian Foster xfs_bmbt_get_all(leftp, &left); 5781ddb19e31SBrian Foster blockcount = left.br_blockcount + got.br_blockcount; 5782ddb19e31SBrian Foster 5783ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 5784ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 5785ddb19e31SBrian Foster ASSERT(xfs_bmse_can_merge(&left, &got, shift)); 5786ddb19e31SBrian Foster 5787ddb19e31SBrian Foster /* 5788ddb19e31SBrian Foster * Merge the in-core extents. Note that the host record pointers and 5789ddb19e31SBrian Foster * current_ext index are invalid once the extent has been removed via 5790ddb19e31SBrian Foster * xfs_iext_remove(). 5791ddb19e31SBrian Foster */ 5792ddb19e31SBrian Foster xfs_bmbt_set_blockcount(leftp, blockcount); 5793ddb19e31SBrian Foster xfs_iext_remove(ip, current_ext, 1, 0); 5794ddb19e31SBrian Foster 5795ddb19e31SBrian Foster /* 5796ddb19e31SBrian Foster * Update the on-disk extent count, the btree if necessary and log the 5797ddb19e31SBrian Foster * inode. 5798ddb19e31SBrian Foster */ 5799ddb19e31SBrian Foster XFS_IFORK_NEXT_SET(ip, whichfork, 5800ddb19e31SBrian Foster XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 5801ddb19e31SBrian Foster *logflags |= XFS_ILOG_CORE; 5802ddb19e31SBrian Foster if (!cur) { 5803ddb19e31SBrian Foster *logflags |= XFS_ILOG_DEXT; 5804ddb19e31SBrian Foster return 0; 5805ddb19e31SBrian Foster } 5806ddb19e31SBrian Foster 5807ddb19e31SBrian Foster /* lookup and remove the extent to merge */ 5808ddb19e31SBrian Foster error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, 5809ddb19e31SBrian Foster got.br_blockcount, &i); 5810ddb19e31SBrian Foster if (error) 58114db431f5SDave Chinner return error; 58125fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5813ddb19e31SBrian Foster 5814ddb19e31SBrian Foster error = xfs_btree_delete(cur, &i); 5815ddb19e31SBrian Foster if (error) 58164db431f5SDave Chinner return error; 58175fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5818ddb19e31SBrian Foster 5819ddb19e31SBrian Foster /* lookup and update size of the previous extent */ 5820ddb19e31SBrian Foster error = xfs_bmbt_lookup_eq(cur, left.br_startoff, left.br_startblock, 5821ddb19e31SBrian Foster left.br_blockcount, &i); 5822ddb19e31SBrian Foster if (error) 58234db431f5SDave Chinner return error; 58245fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5825ddb19e31SBrian Foster 5826ddb19e31SBrian Foster left.br_blockcount = blockcount; 5827ddb19e31SBrian Foster 58284db431f5SDave Chinner return xfs_bmbt_update(cur, left.br_startoff, left.br_startblock, 5829ddb19e31SBrian Foster left.br_blockcount, left.br_state); 5830ddb19e31SBrian Foster } 5831ddb19e31SBrian Foster 5832ddb19e31SBrian Foster /* 5833a979bdfeSBrian Foster * Shift a single extent. 5834a979bdfeSBrian Foster */ 5835a979bdfeSBrian Foster STATIC int 5836a979bdfeSBrian Foster xfs_bmse_shift_one( 5837a979bdfeSBrian Foster struct xfs_inode *ip, 5838a979bdfeSBrian Foster int whichfork, 5839a979bdfeSBrian Foster xfs_fileoff_t offset_shift_fsb, 5840a979bdfeSBrian Foster int *current_ext, 5841a979bdfeSBrian Foster struct xfs_bmbt_rec_host *gotp, 5842a979bdfeSBrian Foster struct xfs_btree_cur *cur, 5843a904b1caSNamjae Jeon int *logflags, 58449c194644SDarrick J. Wong enum shift_direction direction, 58459c194644SDarrick J. Wong struct xfs_defer_ops *dfops) 5846a979bdfeSBrian Foster { 5847a979bdfeSBrian Foster struct xfs_ifork *ifp; 58485fb5aeeeSEric Sandeen struct xfs_mount *mp; 5849a979bdfeSBrian Foster xfs_fileoff_t startoff; 5850a904b1caSNamjae Jeon struct xfs_bmbt_rec_host *adj_irecp; 5851a979bdfeSBrian Foster struct xfs_bmbt_irec got; 5852a904b1caSNamjae Jeon struct xfs_bmbt_irec adj_irec; 5853a979bdfeSBrian Foster int error; 5854a979bdfeSBrian Foster int i; 5855a904b1caSNamjae Jeon int total_extents; 5856a979bdfeSBrian Foster 58575fb5aeeeSEric Sandeen mp = ip->i_mount; 5858a979bdfeSBrian Foster ifp = XFS_IFORK_PTR(ip, whichfork); 58595d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 5860a979bdfeSBrian Foster 5861a979bdfeSBrian Foster xfs_bmbt_get_all(gotp, &got); 5862a979bdfeSBrian Foster 5863f71721d0SBrian Foster /* delalloc extents should be prevented by caller */ 58645fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, !isnullstartblock(got.br_startblock)); 5865f71721d0SBrian Foster 5866a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) { 5867a904b1caSNamjae Jeon startoff = got.br_startoff - offset_shift_fsb; 5868a979bdfeSBrian Foster 5869a904b1caSNamjae Jeon /* 5870a904b1caSNamjae Jeon * Check for merge if we've got an extent to the left, 5871a904b1caSNamjae Jeon * otherwise make sure there's enough room at the start 5872a904b1caSNamjae Jeon * of the file for the shift. 5873a904b1caSNamjae Jeon */ 5874a904b1caSNamjae Jeon if (!*current_ext) { 5875a904b1caSNamjae Jeon if (got.br_startoff < offset_shift_fsb) 5876a904b1caSNamjae Jeon return -EINVAL; 5877a904b1caSNamjae Jeon goto update_current_ext; 5878a904b1caSNamjae Jeon } 5879a904b1caSNamjae Jeon /* 5880a904b1caSNamjae Jeon * grab the left extent and check for a large 5881a904b1caSNamjae Jeon * enough hole. 5882a904b1caSNamjae Jeon */ 5883a904b1caSNamjae Jeon adj_irecp = xfs_iext_get_ext(ifp, *current_ext - 1); 5884a904b1caSNamjae Jeon xfs_bmbt_get_all(adj_irecp, &adj_irec); 5885a904b1caSNamjae Jeon 5886a904b1caSNamjae Jeon if (startoff < 5887a904b1caSNamjae Jeon adj_irec.br_startoff + adj_irec.br_blockcount) 5888a979bdfeSBrian Foster return -EINVAL; 5889a979bdfeSBrian Foster 5890a979bdfeSBrian Foster /* check whether to merge the extent or shift it down */ 5891a904b1caSNamjae Jeon if (xfs_bmse_can_merge(&adj_irec, &got, 5892a904b1caSNamjae Jeon offset_shift_fsb)) { 58939c194644SDarrick J. Wong error = xfs_bmse_merge(ip, whichfork, offset_shift_fsb, 5894a904b1caSNamjae Jeon *current_ext, gotp, adj_irecp, 5895a904b1caSNamjae Jeon cur, logflags); 58969c194644SDarrick J. Wong if (error) 58979c194644SDarrick J. Wong return error; 58989c194644SDarrick J. Wong adj_irec = got; 58999c194644SDarrick J. Wong goto update_rmap; 5900b11bd671SDave Chinner } 5901a904b1caSNamjae Jeon } else { 5902a904b1caSNamjae Jeon startoff = got.br_startoff + offset_shift_fsb; 5903a904b1caSNamjae Jeon /* nothing to move if this is the last extent */ 5904a904b1caSNamjae Jeon if (*current_ext >= (total_extents - 1)) 5905a904b1caSNamjae Jeon goto update_current_ext; 5906a904b1caSNamjae Jeon /* 5907a904b1caSNamjae Jeon * If this is not the last extent in the file, make sure there 5908a904b1caSNamjae Jeon * is enough room between current extent and next extent for 5909a904b1caSNamjae Jeon * accommodating the shift. 5910a904b1caSNamjae Jeon */ 5911a904b1caSNamjae Jeon adj_irecp = xfs_iext_get_ext(ifp, *current_ext + 1); 5912a904b1caSNamjae Jeon xfs_bmbt_get_all(adj_irecp, &adj_irec); 5913a904b1caSNamjae Jeon if (startoff + got.br_blockcount > adj_irec.br_startoff) 5914b11bd671SDave Chinner return -EINVAL; 5915a904b1caSNamjae Jeon /* 5916a904b1caSNamjae Jeon * Unlike a left shift (which involves a hole punch), 5917a904b1caSNamjae Jeon * a right shift does not modify extent neighbors 5918a904b1caSNamjae Jeon * in any way. We should never find mergeable extents 5919a904b1caSNamjae Jeon * in this scenario. Check anyways and warn if we 5920a904b1caSNamjae Jeon * encounter two extents that could be one. 5921a904b1caSNamjae Jeon */ 5922a904b1caSNamjae Jeon if (xfs_bmse_can_merge(&got, &adj_irec, offset_shift_fsb)) 5923a904b1caSNamjae Jeon WARN_ON_ONCE(1); 5924a904b1caSNamjae Jeon } 5925a979bdfeSBrian Foster /* 5926a979bdfeSBrian Foster * Increment the extent index for the next iteration, update the start 5927a979bdfeSBrian Foster * offset of the in-core extent and update the btree if applicable. 5928a979bdfeSBrian Foster */ 5929a904b1caSNamjae Jeon update_current_ext: 5930a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) 5931a979bdfeSBrian Foster (*current_ext)++; 5932a904b1caSNamjae Jeon else 5933a904b1caSNamjae Jeon (*current_ext)--; 5934a979bdfeSBrian Foster xfs_bmbt_set_startoff(gotp, startoff); 5935a979bdfeSBrian Foster *logflags |= XFS_ILOG_CORE; 59369c194644SDarrick J. Wong adj_irec = got; 5937a979bdfeSBrian Foster if (!cur) { 5938a979bdfeSBrian Foster *logflags |= XFS_ILOG_DEXT; 59399c194644SDarrick J. Wong goto update_rmap; 5940a979bdfeSBrian Foster } 5941a979bdfeSBrian Foster 5942a979bdfeSBrian Foster error = xfs_bmbt_lookup_eq(cur, got.br_startoff, got.br_startblock, 5943a979bdfeSBrian Foster got.br_blockcount, &i); 5944a979bdfeSBrian Foster if (error) 5945a979bdfeSBrian Foster return error; 59465fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5947a979bdfeSBrian Foster 5948a979bdfeSBrian Foster got.br_startoff = startoff; 59499c194644SDarrick J. Wong error = xfs_bmbt_update(cur, got.br_startoff, got.br_startblock, 5950a979bdfeSBrian Foster got.br_blockcount, got.br_state); 59519c194644SDarrick J. Wong if (error) 59529c194644SDarrick J. Wong return error; 59539c194644SDarrick J. Wong 59549c194644SDarrick J. Wong update_rmap: 59559c194644SDarrick J. Wong /* update reverse mapping */ 59569c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &adj_irec); 59579c194644SDarrick J. Wong if (error) 59589c194644SDarrick J. Wong return error; 59599c194644SDarrick J. Wong adj_irec.br_startoff = startoff; 59609c194644SDarrick J. Wong return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &adj_irec); 5961a979bdfeSBrian Foster } 5962a979bdfeSBrian Foster 5963a979bdfeSBrian Foster /* 5964a904b1caSNamjae Jeon * Shift extent records to the left/right to cover/create a hole. 596530f712c9SDave Chinner * 59662c845f5aSBrian Foster * The maximum number of extents to be shifted in a single operation is 5967a904b1caSNamjae Jeon * @num_exts. @stop_fsb specifies the file offset at which to stop shift and the 59682c845f5aSBrian Foster * file offset where we've left off is returned in @next_fsb. @offset_shift_fsb 59692c845f5aSBrian Foster * is the length by which each extent is shifted. If there is no hole to shift 59702c845f5aSBrian Foster * the extents into, this will be considered invalid operation and we abort 59712c845f5aSBrian Foster * immediately. 597230f712c9SDave Chinner */ 597330f712c9SDave Chinner int 597430f712c9SDave Chinner xfs_bmap_shift_extents( 597530f712c9SDave Chinner struct xfs_trans *tp, 597630f712c9SDave Chinner struct xfs_inode *ip, 5977a904b1caSNamjae Jeon xfs_fileoff_t *next_fsb, 597830f712c9SDave Chinner xfs_fileoff_t offset_shift_fsb, 59792c845f5aSBrian Foster int *done, 5980a904b1caSNamjae Jeon xfs_fileoff_t stop_fsb, 598130f712c9SDave Chinner xfs_fsblock_t *firstblock, 59822c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops, 5983a904b1caSNamjae Jeon enum shift_direction direction, 598430f712c9SDave Chinner int num_exts) 598530f712c9SDave Chinner { 5986ca446d88SBrian Foster struct xfs_btree_cur *cur = NULL; 598730f712c9SDave Chinner struct xfs_bmbt_rec_host *gotp; 598830f712c9SDave Chinner struct xfs_bmbt_irec got; 598930f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 599030f712c9SDave Chinner struct xfs_ifork *ifp; 599130f712c9SDave Chinner xfs_extnum_t nexts = 0; 59922c845f5aSBrian Foster xfs_extnum_t current_ext; 5993a904b1caSNamjae Jeon xfs_extnum_t total_extents; 5994a904b1caSNamjae Jeon xfs_extnum_t stop_extent; 599530f712c9SDave Chinner int error = 0; 599630f712c9SDave Chinner int whichfork = XFS_DATA_FORK; 5997ca446d88SBrian Foster int logflags = 0; 599830f712c9SDave Chinner 599930f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 600030f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 600130f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 600230f712c9SDave Chinner mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 600330f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmap_shift_extents", 600430f712c9SDave Chinner XFS_ERRLEVEL_LOW, mp); 60052451337dSDave Chinner return -EFSCORRUPTED; 600630f712c9SDave Chinner } 600730f712c9SDave Chinner 600830f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 60092451337dSDave Chinner return -EIO; 601030f712c9SDave Chinner 60112c845f5aSBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 60122c845f5aSBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 6013a904b1caSNamjae Jeon ASSERT(direction == SHIFT_LEFT || direction == SHIFT_RIGHT); 6014a904b1caSNamjae Jeon ASSERT(*next_fsb != NULLFSBLOCK || direction == SHIFT_RIGHT); 601530f712c9SDave Chinner 601630f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 601730f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 601830f712c9SDave Chinner /* Read in all the extents */ 601930f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 602030f712c9SDave Chinner if (error) 602130f712c9SDave Chinner return error; 602230f712c9SDave Chinner } 602330f712c9SDave Chinner 6024ddb19e31SBrian Foster if (ifp->if_flags & XFS_IFBROOT) { 6025ddb19e31SBrian Foster cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 6026ddb19e31SBrian Foster cur->bc_private.b.firstblock = *firstblock; 60272c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 6028ddb19e31SBrian Foster cur->bc_private.b.flags = 0; 6029ddb19e31SBrian Foster } 6030ddb19e31SBrian Foster 603130f712c9SDave Chinner /* 603230f712c9SDave Chinner * There may be delalloc extents in the data fork before the range we 60332c845f5aSBrian Foster * are collapsing out, so we cannot use the count of real extents here. 60342c845f5aSBrian Foster * Instead we have to calculate it from the incore fork. 603530f712c9SDave Chinner */ 60365d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 6037a904b1caSNamjae Jeon if (total_extents == 0) { 6038a904b1caSNamjae Jeon *done = 1; 6039a904b1caSNamjae Jeon goto del_cursor; 6040a904b1caSNamjae Jeon } 6041a904b1caSNamjae Jeon 6042a904b1caSNamjae Jeon /* 6043a904b1caSNamjae Jeon * In case of first right shift, we need to initialize next_fsb 6044a904b1caSNamjae Jeon */ 6045a904b1caSNamjae Jeon if (*next_fsb == NULLFSBLOCK) { 6046a904b1caSNamjae Jeon gotp = xfs_iext_get_ext(ifp, total_extents - 1); 6047a904b1caSNamjae Jeon xfs_bmbt_get_all(gotp, &got); 6048a904b1caSNamjae Jeon *next_fsb = got.br_startoff; 6049a904b1caSNamjae Jeon if (stop_fsb > *next_fsb) { 6050a904b1caSNamjae Jeon *done = 1; 6051a904b1caSNamjae Jeon goto del_cursor; 6052a904b1caSNamjae Jeon } 6053a904b1caSNamjae Jeon } 6054a904b1caSNamjae Jeon 6055a904b1caSNamjae Jeon /* Lookup the extent index at which we have to stop */ 6056a904b1caSNamjae Jeon if (direction == SHIFT_RIGHT) { 6057a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, stop_fsb, &stop_extent); 6058a904b1caSNamjae Jeon /* Make stop_extent exclusive of shift range */ 6059a904b1caSNamjae Jeon stop_extent--; 6060a904b1caSNamjae Jeon } else 6061a904b1caSNamjae Jeon stop_extent = total_extents; 6062a904b1caSNamjae Jeon 6063a904b1caSNamjae Jeon /* 6064a904b1caSNamjae Jeon * Look up the extent index for the fsb where we start shifting. We can 6065a904b1caSNamjae Jeon * henceforth iterate with current_ext as extent list changes are locked 6066a904b1caSNamjae Jeon * out via ilock. 6067a904b1caSNamjae Jeon * 6068a904b1caSNamjae Jeon * gotp can be null in 2 cases: 1) if there are no extents or 2) 6069a904b1caSNamjae Jeon * *next_fsb lies in a hole beyond which there are no extents. Either 6070a904b1caSNamjae Jeon * way, we are done. 6071a904b1caSNamjae Jeon */ 6072a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, *next_fsb, ¤t_ext); 6073a904b1caSNamjae Jeon if (!gotp) { 6074a904b1caSNamjae Jeon *done = 1; 6075a904b1caSNamjae Jeon goto del_cursor; 6076a904b1caSNamjae Jeon } 6077a904b1caSNamjae Jeon 6078a904b1caSNamjae Jeon /* some sanity checking before we finally start shifting extents */ 6079a904b1caSNamjae Jeon if ((direction == SHIFT_LEFT && current_ext >= stop_extent) || 6080a904b1caSNamjae Jeon (direction == SHIFT_RIGHT && current_ext <= stop_extent)) { 6081a904b1caSNamjae Jeon error = -EIO; 6082a904b1caSNamjae Jeon goto del_cursor; 6083a904b1caSNamjae Jeon } 6084a904b1caSNamjae Jeon 6085a904b1caSNamjae Jeon while (nexts++ < num_exts) { 6086a979bdfeSBrian Foster error = xfs_bmse_shift_one(ip, whichfork, offset_shift_fsb, 6087a904b1caSNamjae Jeon ¤t_ext, gotp, cur, &logflags, 60889c194644SDarrick J. Wong direction, dfops); 6089ddb19e31SBrian Foster if (error) 6090ddb19e31SBrian Foster goto del_cursor; 6091a904b1caSNamjae Jeon /* 6092a904b1caSNamjae Jeon * If there was an extent merge during the shift, the extent 6093a904b1caSNamjae Jeon * count can change. Update the total and grade the next record. 6094a904b1caSNamjae Jeon */ 6095a904b1caSNamjae Jeon if (direction == SHIFT_LEFT) { 60965d829300SEric Sandeen total_extents = xfs_iext_count(ifp); 6097a904b1caSNamjae Jeon stop_extent = total_extents; 6098a904b1caSNamjae Jeon } 6099a904b1caSNamjae Jeon 6100a904b1caSNamjae Jeon if (current_ext == stop_extent) { 6101a904b1caSNamjae Jeon *done = 1; 6102a904b1caSNamjae Jeon *next_fsb = NULLFSBLOCK; 6103ddb19e31SBrian Foster break; 6104a904b1caSNamjae Jeon } 6105ddb19e31SBrian Foster gotp = xfs_iext_get_ext(ifp, current_ext); 610630f712c9SDave Chinner } 610730f712c9SDave Chinner 6108a904b1caSNamjae Jeon if (!*done) { 6109a979bdfeSBrian Foster xfs_bmbt_get_all(gotp, &got); 61102c845f5aSBrian Foster *next_fsb = got.br_startoff; 6111a979bdfeSBrian Foster } 611230f712c9SDave Chinner 611330f712c9SDave Chinner del_cursor: 611430f712c9SDave Chinner if (cur) 611530f712c9SDave Chinner xfs_btree_del_cursor(cur, 611630f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 611730f712c9SDave Chinner 6118ca446d88SBrian Foster if (logflags) 611930f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 61202c845f5aSBrian Foster 612130f712c9SDave Chinner return error; 612230f712c9SDave Chinner } 6123a904b1caSNamjae Jeon 6124a904b1caSNamjae Jeon /* 6125a904b1caSNamjae Jeon * Splits an extent into two extents at split_fsb block such that it is 6126a904b1caSNamjae Jeon * the first block of the current_ext. @current_ext is a target extent 6127a904b1caSNamjae Jeon * to be split. @split_fsb is a block where the extents is split. 6128a904b1caSNamjae Jeon * If split_fsb lies in a hole or the first block of extents, just return 0. 6129a904b1caSNamjae Jeon */ 6130a904b1caSNamjae Jeon STATIC int 6131a904b1caSNamjae Jeon xfs_bmap_split_extent_at( 6132a904b1caSNamjae Jeon struct xfs_trans *tp, 6133a904b1caSNamjae Jeon struct xfs_inode *ip, 6134a904b1caSNamjae Jeon xfs_fileoff_t split_fsb, 6135a904b1caSNamjae Jeon xfs_fsblock_t *firstfsb, 61362c3234d1SDarrick J. Wong struct xfs_defer_ops *dfops) 6137a904b1caSNamjae Jeon { 6138a904b1caSNamjae Jeon int whichfork = XFS_DATA_FORK; 6139a904b1caSNamjae Jeon struct xfs_btree_cur *cur = NULL; 6140a904b1caSNamjae Jeon struct xfs_bmbt_rec_host *gotp; 6141a904b1caSNamjae Jeon struct xfs_bmbt_irec got; 6142a904b1caSNamjae Jeon struct xfs_bmbt_irec new; /* split extent */ 6143a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6144a904b1caSNamjae Jeon struct xfs_ifork *ifp; 6145a904b1caSNamjae Jeon xfs_fsblock_t gotblkcnt; /* new block count for got */ 6146a904b1caSNamjae Jeon xfs_extnum_t current_ext; 6147a904b1caSNamjae Jeon int error = 0; 6148a904b1caSNamjae Jeon int logflags = 0; 6149a904b1caSNamjae Jeon int i = 0; 6150a904b1caSNamjae Jeon 6151a904b1caSNamjae Jeon if (unlikely(XFS_TEST_ERROR( 6152a904b1caSNamjae Jeon (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 6153a904b1caSNamjae Jeon XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 6154a904b1caSNamjae Jeon mp, XFS_ERRTAG_BMAPIFORMAT, XFS_RANDOM_BMAPIFORMAT))) { 6155a904b1caSNamjae Jeon XFS_ERROR_REPORT("xfs_bmap_split_extent_at", 6156a904b1caSNamjae Jeon XFS_ERRLEVEL_LOW, mp); 6157a904b1caSNamjae Jeon return -EFSCORRUPTED; 6158a904b1caSNamjae Jeon } 6159a904b1caSNamjae Jeon 6160a904b1caSNamjae Jeon if (XFS_FORCED_SHUTDOWN(mp)) 6161a904b1caSNamjae Jeon return -EIO; 6162a904b1caSNamjae Jeon 6163a904b1caSNamjae Jeon ifp = XFS_IFORK_PTR(ip, whichfork); 6164a904b1caSNamjae Jeon if (!(ifp->if_flags & XFS_IFEXTENTS)) { 6165a904b1caSNamjae Jeon /* Read in all the extents */ 6166a904b1caSNamjae Jeon error = xfs_iread_extents(tp, ip, whichfork); 6167a904b1caSNamjae Jeon if (error) 6168a904b1caSNamjae Jeon return error; 6169a904b1caSNamjae Jeon } 6170a904b1caSNamjae Jeon 6171a904b1caSNamjae Jeon /* 6172a904b1caSNamjae Jeon * gotp can be null in 2 cases: 1) if there are no extents 6173a904b1caSNamjae Jeon * or 2) split_fsb lies in a hole beyond which there are 6174a904b1caSNamjae Jeon * no extents. Either way, we are done. 6175a904b1caSNamjae Jeon */ 6176a904b1caSNamjae Jeon gotp = xfs_iext_bno_to_ext(ifp, split_fsb, ¤t_ext); 6177a904b1caSNamjae Jeon if (!gotp) 6178a904b1caSNamjae Jeon return 0; 6179a904b1caSNamjae Jeon 6180a904b1caSNamjae Jeon xfs_bmbt_get_all(gotp, &got); 6181a904b1caSNamjae Jeon 6182a904b1caSNamjae Jeon /* 6183a904b1caSNamjae Jeon * Check split_fsb lies in a hole or the start boundary offset 6184a904b1caSNamjae Jeon * of the extent. 6185a904b1caSNamjae Jeon */ 6186a904b1caSNamjae Jeon if (got.br_startoff >= split_fsb) 6187a904b1caSNamjae Jeon return 0; 6188a904b1caSNamjae Jeon 6189a904b1caSNamjae Jeon gotblkcnt = split_fsb - got.br_startoff; 6190a904b1caSNamjae Jeon new.br_startoff = split_fsb; 6191a904b1caSNamjae Jeon new.br_startblock = got.br_startblock + gotblkcnt; 6192a904b1caSNamjae Jeon new.br_blockcount = got.br_blockcount - gotblkcnt; 6193a904b1caSNamjae Jeon new.br_state = got.br_state; 6194a904b1caSNamjae Jeon 6195a904b1caSNamjae Jeon if (ifp->if_flags & XFS_IFBROOT) { 6196a904b1caSNamjae Jeon cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 6197a904b1caSNamjae Jeon cur->bc_private.b.firstblock = *firstfsb; 61982c3234d1SDarrick J. Wong cur->bc_private.b.dfops = dfops; 6199a904b1caSNamjae Jeon cur->bc_private.b.flags = 0; 6200a904b1caSNamjae Jeon error = xfs_bmbt_lookup_eq(cur, got.br_startoff, 6201a904b1caSNamjae Jeon got.br_startblock, 6202a904b1caSNamjae Jeon got.br_blockcount, 6203a904b1caSNamjae Jeon &i); 6204a904b1caSNamjae Jeon if (error) 6205a904b1caSNamjae Jeon goto del_cursor; 6206a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 6207a904b1caSNamjae Jeon } 6208a904b1caSNamjae Jeon 6209a904b1caSNamjae Jeon xfs_bmbt_set_blockcount(gotp, gotblkcnt); 6210a904b1caSNamjae Jeon got.br_blockcount = gotblkcnt; 6211a904b1caSNamjae Jeon 6212a904b1caSNamjae Jeon logflags = XFS_ILOG_CORE; 6213a904b1caSNamjae Jeon if (cur) { 6214a904b1caSNamjae Jeon error = xfs_bmbt_update(cur, got.br_startoff, 6215a904b1caSNamjae Jeon got.br_startblock, 6216a904b1caSNamjae Jeon got.br_blockcount, 6217a904b1caSNamjae Jeon got.br_state); 6218a904b1caSNamjae Jeon if (error) 6219a904b1caSNamjae Jeon goto del_cursor; 6220a904b1caSNamjae Jeon } else 6221a904b1caSNamjae Jeon logflags |= XFS_ILOG_DEXT; 6222a904b1caSNamjae Jeon 6223a904b1caSNamjae Jeon /* Add new extent */ 6224a904b1caSNamjae Jeon current_ext++; 6225a904b1caSNamjae Jeon xfs_iext_insert(ip, current_ext, 1, &new, 0); 6226a904b1caSNamjae Jeon XFS_IFORK_NEXT_SET(ip, whichfork, 6227a904b1caSNamjae Jeon XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 6228a904b1caSNamjae Jeon 6229a904b1caSNamjae Jeon if (cur) { 6230a904b1caSNamjae Jeon error = xfs_bmbt_lookup_eq(cur, new.br_startoff, 6231a904b1caSNamjae Jeon new.br_startblock, new.br_blockcount, 6232a904b1caSNamjae Jeon &i); 6233a904b1caSNamjae Jeon if (error) 6234a904b1caSNamjae Jeon goto del_cursor; 6235a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 0, del_cursor); 6236a904b1caSNamjae Jeon cur->bc_rec.b.br_state = new.br_state; 6237a904b1caSNamjae Jeon 6238a904b1caSNamjae Jeon error = xfs_btree_insert(cur, &i); 6239a904b1caSNamjae Jeon if (error) 6240a904b1caSNamjae Jeon goto del_cursor; 6241a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 6242a904b1caSNamjae Jeon } 6243a904b1caSNamjae Jeon 6244a904b1caSNamjae Jeon /* 6245a904b1caSNamjae Jeon * Convert to a btree if necessary. 6246a904b1caSNamjae Jeon */ 6247a904b1caSNamjae Jeon if (xfs_bmap_needs_btree(ip, whichfork)) { 6248a904b1caSNamjae Jeon int tmp_logflags; /* partial log flag return val */ 6249a904b1caSNamjae Jeon 6250a904b1caSNamjae Jeon ASSERT(cur == NULL); 62512c3234d1SDarrick J. Wong error = xfs_bmap_extents_to_btree(tp, ip, firstfsb, dfops, 6252a904b1caSNamjae Jeon &cur, 0, &tmp_logflags, whichfork); 6253a904b1caSNamjae Jeon logflags |= tmp_logflags; 6254a904b1caSNamjae Jeon } 6255a904b1caSNamjae Jeon 6256a904b1caSNamjae Jeon del_cursor: 6257a904b1caSNamjae Jeon if (cur) { 6258a904b1caSNamjae Jeon cur->bc_private.b.allocated = 0; 6259a904b1caSNamjae Jeon xfs_btree_del_cursor(cur, 6260a904b1caSNamjae Jeon error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 6261a904b1caSNamjae Jeon } 6262a904b1caSNamjae Jeon 6263a904b1caSNamjae Jeon if (logflags) 6264a904b1caSNamjae Jeon xfs_trans_log_inode(tp, ip, logflags); 6265a904b1caSNamjae Jeon return error; 6266a904b1caSNamjae Jeon } 6267a904b1caSNamjae Jeon 6268a904b1caSNamjae Jeon int 6269a904b1caSNamjae Jeon xfs_bmap_split_extent( 6270a904b1caSNamjae Jeon struct xfs_inode *ip, 6271a904b1caSNamjae Jeon xfs_fileoff_t split_fsb) 6272a904b1caSNamjae Jeon { 6273a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6274a904b1caSNamjae Jeon struct xfs_trans *tp; 62752c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; 6276a904b1caSNamjae Jeon xfs_fsblock_t firstfsb; 6277a904b1caSNamjae Jeon int error; 6278a904b1caSNamjae Jeon 6279253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 6280253f4911SChristoph Hellwig XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp); 6281253f4911SChristoph Hellwig if (error) 6282a904b1caSNamjae Jeon return error; 6283a904b1caSNamjae Jeon 6284a904b1caSNamjae Jeon xfs_ilock(ip, XFS_ILOCK_EXCL); 6285a904b1caSNamjae Jeon xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); 6286a904b1caSNamjae Jeon 62872c3234d1SDarrick J. Wong xfs_defer_init(&dfops, &firstfsb); 6288a904b1caSNamjae Jeon 6289a904b1caSNamjae Jeon error = xfs_bmap_split_extent_at(tp, ip, split_fsb, 62902c3234d1SDarrick J. Wong &firstfsb, &dfops); 6291a904b1caSNamjae Jeon if (error) 6292a904b1caSNamjae Jeon goto out; 6293a904b1caSNamjae Jeon 62942c3234d1SDarrick J. Wong error = xfs_defer_finish(&tp, &dfops, NULL); 6295a904b1caSNamjae Jeon if (error) 6296a904b1caSNamjae Jeon goto out; 6297a904b1caSNamjae Jeon 629870393313SChristoph Hellwig return xfs_trans_commit(tp); 6299a904b1caSNamjae Jeon 6300a904b1caSNamjae Jeon out: 63012c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 63024906e215SChristoph Hellwig xfs_trans_cancel(tp); 6303a904b1caSNamjae Jeon return error; 6304a904b1caSNamjae Jeon } 63059f3afb57SDarrick J. Wong 63069f3afb57SDarrick J. Wong /* Deferred mapping is only for real extents in the data fork. */ 63079f3afb57SDarrick J. Wong static bool 63089f3afb57SDarrick J. Wong xfs_bmap_is_update_needed( 63099f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 63109f3afb57SDarrick J. Wong { 63119f3afb57SDarrick J. Wong return bmap->br_startblock != HOLESTARTBLOCK && 63129f3afb57SDarrick J. Wong bmap->br_startblock != DELAYSTARTBLOCK; 63139f3afb57SDarrick J. Wong } 63149f3afb57SDarrick J. Wong 63159f3afb57SDarrick J. Wong /* Record a bmap intent. */ 63169f3afb57SDarrick J. Wong static int 63179f3afb57SDarrick J. Wong __xfs_bmap_add( 63189f3afb57SDarrick J. Wong struct xfs_mount *mp, 63199f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63209f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 63219f3afb57SDarrick J. Wong struct xfs_inode *ip, 63229f3afb57SDarrick J. Wong int whichfork, 63239f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 63249f3afb57SDarrick J. Wong { 63259f3afb57SDarrick J. Wong int error; 63269f3afb57SDarrick J. Wong struct xfs_bmap_intent *bi; 63279f3afb57SDarrick J. Wong 63289f3afb57SDarrick J. Wong trace_xfs_bmap_defer(mp, 63299f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(mp, bmap->br_startblock), 63309f3afb57SDarrick J. Wong type, 63319f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bmap->br_startblock), 63329f3afb57SDarrick J. Wong ip->i_ino, whichfork, 63339f3afb57SDarrick J. Wong bmap->br_startoff, 63349f3afb57SDarrick J. Wong bmap->br_blockcount, 63359f3afb57SDarrick J. Wong bmap->br_state); 63369f3afb57SDarrick J. Wong 63379f3afb57SDarrick J. Wong bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_SLEEP | KM_NOFS); 63389f3afb57SDarrick J. Wong INIT_LIST_HEAD(&bi->bi_list); 63399f3afb57SDarrick J. Wong bi->bi_type = type; 63409f3afb57SDarrick J. Wong bi->bi_owner = ip; 63419f3afb57SDarrick J. Wong bi->bi_whichfork = whichfork; 63429f3afb57SDarrick J. Wong bi->bi_bmap = *bmap; 63439f3afb57SDarrick J. Wong 63449f3afb57SDarrick J. Wong error = xfs_defer_join(dfops, bi->bi_owner); 63459f3afb57SDarrick J. Wong if (error) { 63469f3afb57SDarrick J. Wong kmem_free(bi); 63479f3afb57SDarrick J. Wong return error; 63489f3afb57SDarrick J. Wong } 63499f3afb57SDarrick J. Wong 63509f3afb57SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_BMAP, &bi->bi_list); 63519f3afb57SDarrick J. Wong return 0; 63529f3afb57SDarrick J. Wong } 63539f3afb57SDarrick J. Wong 63549f3afb57SDarrick J. Wong /* Map an extent into a file. */ 63559f3afb57SDarrick J. Wong int 63569f3afb57SDarrick J. Wong xfs_bmap_map_extent( 63579f3afb57SDarrick J. Wong struct xfs_mount *mp, 63589f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63599f3afb57SDarrick J. Wong struct xfs_inode *ip, 63609f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 63619f3afb57SDarrick J. Wong { 63629f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 63639f3afb57SDarrick J. Wong return 0; 63649f3afb57SDarrick J. Wong 63659f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_MAP, ip, 63669f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 63679f3afb57SDarrick J. Wong } 63689f3afb57SDarrick J. Wong 63699f3afb57SDarrick J. Wong /* Unmap an extent out of a file. */ 63709f3afb57SDarrick J. Wong int 63719f3afb57SDarrick J. Wong xfs_bmap_unmap_extent( 63729f3afb57SDarrick J. Wong struct xfs_mount *mp, 63739f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63749f3afb57SDarrick J. Wong struct xfs_inode *ip, 63759f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 63769f3afb57SDarrick J. Wong { 63779f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 63789f3afb57SDarrick J. Wong return 0; 63799f3afb57SDarrick J. Wong 63809f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_UNMAP, ip, 63819f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 63829f3afb57SDarrick J. Wong } 63839f3afb57SDarrick J. Wong 63849f3afb57SDarrick J. Wong /* 63859f3afb57SDarrick J. Wong * Process one of the deferred bmap operations. We pass back the 63869f3afb57SDarrick J. Wong * btree cursor to maintain our lock on the bmapbt between calls. 63879f3afb57SDarrick J. Wong */ 63889f3afb57SDarrick J. Wong int 63899f3afb57SDarrick J. Wong xfs_bmap_finish_one( 63909f3afb57SDarrick J. Wong struct xfs_trans *tp, 63919f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 63929f3afb57SDarrick J. Wong struct xfs_inode *ip, 63939f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 63949f3afb57SDarrick J. Wong int whichfork, 63959f3afb57SDarrick J. Wong xfs_fileoff_t startoff, 63969f3afb57SDarrick J. Wong xfs_fsblock_t startblock, 63979f3afb57SDarrick J. Wong xfs_filblks_t blockcount, 63989f3afb57SDarrick J. Wong xfs_exntst_t state) 63999f3afb57SDarrick J. Wong { 64009f3afb57SDarrick J. Wong struct xfs_bmbt_irec bmap; 64019f3afb57SDarrick J. Wong int nimaps = 1; 64029f3afb57SDarrick J. Wong xfs_fsblock_t firstfsb; 64039f3afb57SDarrick J. Wong int flags = XFS_BMAPI_REMAP; 64049f3afb57SDarrick J. Wong int done; 64059f3afb57SDarrick J. Wong int error = 0; 64069f3afb57SDarrick J. Wong 64079f3afb57SDarrick J. Wong bmap.br_startblock = startblock; 64089f3afb57SDarrick J. Wong bmap.br_startoff = startoff; 64099f3afb57SDarrick J. Wong bmap.br_blockcount = blockcount; 64109f3afb57SDarrick J. Wong bmap.br_state = state; 64119f3afb57SDarrick J. Wong 64129f3afb57SDarrick J. Wong trace_xfs_bmap_deferred(tp->t_mountp, 64139f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(tp->t_mountp, startblock), type, 64149f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), 64159f3afb57SDarrick J. Wong ip->i_ino, whichfork, startoff, blockcount, state); 64169f3afb57SDarrick J. Wong 64179f3afb57SDarrick J. Wong if (whichfork != XFS_DATA_FORK && whichfork != XFS_ATTR_FORK) 64189f3afb57SDarrick J. Wong return -EFSCORRUPTED; 64199f3afb57SDarrick J. Wong if (whichfork == XFS_ATTR_FORK) 64209f3afb57SDarrick J. Wong flags |= XFS_BMAPI_ATTRFORK; 64219f3afb57SDarrick J. Wong 64229f3afb57SDarrick J. Wong if (XFS_TEST_ERROR(false, tp->t_mountp, 64239f3afb57SDarrick J. Wong XFS_ERRTAG_BMAP_FINISH_ONE, 64249f3afb57SDarrick J. Wong XFS_RANDOM_BMAP_FINISH_ONE)) 64259f3afb57SDarrick J. Wong return -EIO; 64269f3afb57SDarrick J. Wong 64279f3afb57SDarrick J. Wong switch (type) { 64289f3afb57SDarrick J. Wong case XFS_BMAP_MAP: 64299f3afb57SDarrick J. Wong firstfsb = bmap.br_startblock; 64309f3afb57SDarrick J. Wong error = xfs_bmapi_write(tp, ip, bmap.br_startoff, 64319f3afb57SDarrick J. Wong bmap.br_blockcount, flags, &firstfsb, 64329f3afb57SDarrick J. Wong bmap.br_blockcount, &bmap, &nimaps, 64339f3afb57SDarrick J. Wong dfops); 64349f3afb57SDarrick J. Wong break; 64359f3afb57SDarrick J. Wong case XFS_BMAP_UNMAP: 64369f3afb57SDarrick J. Wong error = xfs_bunmapi(tp, ip, bmap.br_startoff, 64379f3afb57SDarrick J. Wong bmap.br_blockcount, flags, 1, &firstfsb, 64389f3afb57SDarrick J. Wong dfops, &done); 64399f3afb57SDarrick J. Wong ASSERT(done); 64409f3afb57SDarrick J. Wong break; 64419f3afb57SDarrick J. Wong default: 64429f3afb57SDarrick J. Wong ASSERT(0); 64439f3afb57SDarrick J. Wong error = -EFSCORRUPTED; 64449f3afb57SDarrick J. Wong } 64459f3afb57SDarrick J. Wong 64469f3afb57SDarrick J. Wong return error; 64479f3afb57SDarrick J. Wong } 6448