10b61f8a4SDave Chinner // SPDX-License-Identifier: GPL-2.0 230f712c9SDave Chinner /* 330f712c9SDave Chinner * Copyright (c) 2000-2006 Silicon Graphics, Inc. 430f712c9SDave Chinner * All Rights Reserved. 530f712c9SDave Chinner */ 630f712c9SDave Chinner #include "xfs.h" 730f712c9SDave Chinner #include "xfs_fs.h" 830f712c9SDave Chinner #include "xfs_shared.h" 930f712c9SDave Chinner #include "xfs_format.h" 1030f712c9SDave Chinner #include "xfs_log_format.h" 1130f712c9SDave Chinner #include "xfs_trans_resv.h" 1230f712c9SDave Chinner #include "xfs_bit.h" 1330f712c9SDave Chinner #include "xfs_sb.h" 1430f712c9SDave Chinner #include "xfs_mount.h" 153ab78df2SDarrick J. Wong #include "xfs_defer.h" 1630f712c9SDave Chinner #include "xfs_da_format.h" 1730f712c9SDave Chinner #include "xfs_da_btree.h" 1830f712c9SDave Chinner #include "xfs_dir2.h" 1930f712c9SDave Chinner #include "xfs_inode.h" 2030f712c9SDave Chinner #include "xfs_btree.h" 2130f712c9SDave Chinner #include "xfs_trans.h" 2230f712c9SDave Chinner #include "xfs_inode_item.h" 2330f712c9SDave Chinner #include "xfs_extfree_item.h" 2430f712c9SDave Chinner #include "xfs_alloc.h" 2530f712c9SDave Chinner #include "xfs_bmap.h" 2630f712c9SDave Chinner #include "xfs_bmap_util.h" 2730f712c9SDave Chinner #include "xfs_bmap_btree.h" 2830f712c9SDave Chinner #include "xfs_rtalloc.h" 29e9e899a2SDarrick J. Wong #include "xfs_errortag.h" 3030f712c9SDave Chinner #include "xfs_error.h" 3130f712c9SDave Chinner #include "xfs_quota.h" 3230f712c9SDave Chinner #include "xfs_trans_space.h" 3330f712c9SDave Chinner #include "xfs_buf_item.h" 3430f712c9SDave Chinner #include "xfs_trace.h" 3530f712c9SDave Chinner #include "xfs_symlink.h" 3630f712c9SDave Chinner #include "xfs_attr_leaf.h" 3730f712c9SDave Chinner #include "xfs_filestream.h" 38340785ccSDarrick J. Wong #include "xfs_rmap.h" 393fd129b6SDarrick J. Wong #include "xfs_ag_resv.h" 4062aab20fSDarrick J. Wong #include "xfs_refcount.h" 41974ae922SBrian Foster #include "xfs_icache.h" 4230f712c9SDave Chinner 4330f712c9SDave Chinner 4430f712c9SDave Chinner kmem_zone_t *xfs_bmap_free_item_zone; 4530f712c9SDave Chinner 4630f712c9SDave Chinner /* 4730f712c9SDave Chinner * Miscellaneous helper functions 4830f712c9SDave Chinner */ 4930f712c9SDave Chinner 5030f712c9SDave Chinner /* 5130f712c9SDave Chinner * Compute and fill in the value of the maximum depth of a bmap btree 5230f712c9SDave Chinner * in this filesystem. Done once, during mount. 5330f712c9SDave Chinner */ 5430f712c9SDave Chinner void 5530f712c9SDave Chinner xfs_bmap_compute_maxlevels( 5630f712c9SDave Chinner xfs_mount_t *mp, /* file system mount structure */ 5730f712c9SDave Chinner int whichfork) /* data or attr fork */ 5830f712c9SDave Chinner { 5930f712c9SDave Chinner int level; /* btree level */ 6030f712c9SDave Chinner uint maxblocks; /* max blocks at this level */ 6130f712c9SDave Chinner uint maxleafents; /* max leaf entries possible */ 6230f712c9SDave Chinner int maxrootrecs; /* max records in root block */ 6330f712c9SDave Chinner int minleafrecs; /* min records in leaf block */ 6430f712c9SDave Chinner int minnoderecs; /* min records in node block */ 6530f712c9SDave Chinner int sz; /* root block size */ 6630f712c9SDave Chinner 6730f712c9SDave Chinner /* 6830f712c9SDave Chinner * The maximum number of extents in a file, hence the maximum 6930f712c9SDave Chinner * number of leaf entries, is controlled by the type of di_nextents 7030f712c9SDave Chinner * (a signed 32-bit number, xfs_extnum_t), or by di_anextents 7130f712c9SDave Chinner * (a signed 16-bit number, xfs_aextnum_t). 7230f712c9SDave Chinner * 7330f712c9SDave Chinner * Note that we can no longer assume that if we are in ATTR1 that 7430f712c9SDave Chinner * the fork offset of all the inodes will be 7530f712c9SDave Chinner * (xfs_default_attroffset(ip) >> 3) because we could have mounted 7630f712c9SDave Chinner * with ATTR2 and then mounted back with ATTR1, keeping the 7730f712c9SDave Chinner * di_forkoff's fixed but probably at various positions. Therefore, 7830f712c9SDave Chinner * for both ATTR1 and ATTR2 we have to assume the worst case scenario 7930f712c9SDave Chinner * of a minimum size available. 8030f712c9SDave Chinner */ 8130f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) { 8230f712c9SDave Chinner maxleafents = MAXEXTNUM; 8330f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINDBTPTRS); 8430f712c9SDave Chinner } else { 8530f712c9SDave Chinner maxleafents = MAXAEXTNUM; 8630f712c9SDave Chinner sz = XFS_BMDR_SPACE_CALC(MINABTPTRS); 8730f712c9SDave Chinner } 8830f712c9SDave Chinner maxrootrecs = xfs_bmdr_maxrecs(sz, 0); 8930f712c9SDave Chinner minleafrecs = mp->m_bmap_dmnr[0]; 9030f712c9SDave Chinner minnoderecs = mp->m_bmap_dmnr[1]; 9130f712c9SDave Chinner maxblocks = (maxleafents + minleafrecs - 1) / minleafrecs; 9230f712c9SDave Chinner for (level = 1; maxblocks > 1; level++) { 9330f712c9SDave Chinner if (maxblocks <= maxrootrecs) 9430f712c9SDave Chinner maxblocks = 1; 9530f712c9SDave Chinner else 9630f712c9SDave Chinner maxblocks = (maxblocks + minnoderecs - 1) / minnoderecs; 9730f712c9SDave Chinner } 9830f712c9SDave Chinner mp->m_bm_maxlevels[whichfork] = level; 9930f712c9SDave Chinner } 10030f712c9SDave Chinner 10130f712c9SDave Chinner STATIC int /* error */ 10230f712c9SDave Chinner xfs_bmbt_lookup_eq( 10330f712c9SDave Chinner struct xfs_btree_cur *cur, 104e16cf9b0SChristoph Hellwig struct xfs_bmbt_irec *irec, 10530f712c9SDave Chinner int *stat) /* success/failure */ 10630f712c9SDave Chinner { 107e16cf9b0SChristoph Hellwig cur->bc_rec.b = *irec; 10830f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_EQ, stat); 10930f712c9SDave Chinner } 11030f712c9SDave Chinner 11130f712c9SDave Chinner STATIC int /* error */ 112b5cfbc22SChristoph Hellwig xfs_bmbt_lookup_first( 11330f712c9SDave Chinner struct xfs_btree_cur *cur, 11430f712c9SDave Chinner int *stat) /* success/failure */ 11530f712c9SDave Chinner { 116b5cfbc22SChristoph Hellwig cur->bc_rec.b.br_startoff = 0; 117b5cfbc22SChristoph Hellwig cur->bc_rec.b.br_startblock = 0; 118b5cfbc22SChristoph Hellwig cur->bc_rec.b.br_blockcount = 0; 11930f712c9SDave Chinner return xfs_btree_lookup(cur, XFS_LOOKUP_GE, stat); 12030f712c9SDave Chinner } 12130f712c9SDave Chinner 12230f712c9SDave Chinner /* 12330f712c9SDave Chinner * Check if the inode needs to be converted to btree format. 12430f712c9SDave Chinner */ 12530f712c9SDave Chinner static inline bool xfs_bmap_needs_btree(struct xfs_inode *ip, int whichfork) 12630f712c9SDave Chinner { 12760b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 12860b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 12930f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 13030f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 13130f712c9SDave Chinner } 13230f712c9SDave Chinner 13330f712c9SDave Chinner /* 13430f712c9SDave Chinner * Check if the inode should be converted to extent format. 13530f712c9SDave Chinner */ 13630f712c9SDave Chinner static inline bool xfs_bmap_wants_extents(struct xfs_inode *ip, int whichfork) 13730f712c9SDave Chinner { 13860b4984fSDarrick J. Wong return whichfork != XFS_COW_FORK && 13960b4984fSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE && 14030f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) <= 14130f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork); 14230f712c9SDave Chinner } 14330f712c9SDave Chinner 14430f712c9SDave Chinner /* 145a67d00a5SChristoph Hellwig * Update the record referred to by cur to the value given by irec 14630f712c9SDave Chinner * This either works (return 0) or gets an EFSCORRUPTED error. 14730f712c9SDave Chinner */ 14830f712c9SDave Chinner STATIC int 14930f712c9SDave Chinner xfs_bmbt_update( 15030f712c9SDave Chinner struct xfs_btree_cur *cur, 151a67d00a5SChristoph Hellwig struct xfs_bmbt_irec *irec) 15230f712c9SDave Chinner { 15330f712c9SDave Chinner union xfs_btree_rec rec; 15430f712c9SDave Chinner 155a67d00a5SChristoph Hellwig xfs_bmbt_disk_set_all(&rec.bmbt, irec); 15630f712c9SDave Chinner return xfs_btree_update(cur, &rec); 15730f712c9SDave Chinner } 15830f712c9SDave Chinner 15930f712c9SDave Chinner /* 16030f712c9SDave Chinner * Compute the worst-case number of indirect blocks that will be used 16130f712c9SDave Chinner * for ip's delayed extent of length "len". 16230f712c9SDave Chinner */ 16330f712c9SDave Chinner STATIC xfs_filblks_t 16430f712c9SDave Chinner xfs_bmap_worst_indlen( 16530f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 16630f712c9SDave Chinner xfs_filblks_t len) /* delayed extent length */ 16730f712c9SDave Chinner { 16830f712c9SDave Chinner int level; /* btree level number */ 16930f712c9SDave Chinner int maxrecs; /* maximum record count at this level */ 17030f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 17130f712c9SDave Chinner xfs_filblks_t rval; /* return value */ 17230f712c9SDave Chinner 17330f712c9SDave Chinner mp = ip->i_mount; 17430f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[0]; 17530f712c9SDave Chinner for (level = 0, rval = 0; 17630f712c9SDave Chinner level < XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK); 17730f712c9SDave Chinner level++) { 17830f712c9SDave Chinner len += maxrecs - 1; 17930f712c9SDave Chinner do_div(len, maxrecs); 18030f712c9SDave Chinner rval += len; 1815e5c943cSDarrick J. Wong if (len == 1) 1825e5c943cSDarrick J. Wong return rval + XFS_BM_MAXLEVELS(mp, XFS_DATA_FORK) - 18330f712c9SDave Chinner level - 1; 18430f712c9SDave Chinner if (level == 0) 18530f712c9SDave Chinner maxrecs = mp->m_bmap_dmxr[1]; 18630f712c9SDave Chinner } 18730f712c9SDave Chinner return rval; 18830f712c9SDave Chinner } 18930f712c9SDave Chinner 19030f712c9SDave Chinner /* 19130f712c9SDave Chinner * Calculate the default attribute fork offset for newly created inodes. 19230f712c9SDave Chinner */ 19330f712c9SDave Chinner uint 19430f712c9SDave Chinner xfs_default_attroffset( 19530f712c9SDave Chinner struct xfs_inode *ip) 19630f712c9SDave Chinner { 19730f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 19830f712c9SDave Chinner uint offset; 19930f712c9SDave Chinner 20030f712c9SDave Chinner if (mp->m_sb.sb_inodesize == 256) { 20130f712c9SDave Chinner offset = XFS_LITINO(mp, ip->i_d.di_version) - 20230f712c9SDave Chinner XFS_BMDR_SPACE_CALC(MINABTPTRS); 20330f712c9SDave Chinner } else { 20430f712c9SDave Chinner offset = XFS_BMDR_SPACE_CALC(6 * MINABTPTRS); 20530f712c9SDave Chinner } 20630f712c9SDave Chinner 20730f712c9SDave Chinner ASSERT(offset < XFS_LITINO(mp, ip->i_d.di_version)); 20830f712c9SDave Chinner return offset; 20930f712c9SDave Chinner } 21030f712c9SDave Chinner 21130f712c9SDave Chinner /* 21230f712c9SDave Chinner * Helper routine to reset inode di_forkoff field when switching 21330f712c9SDave Chinner * attribute fork from local to extent format - we reset it where 21430f712c9SDave Chinner * possible to make space available for inline data fork extents. 21530f712c9SDave Chinner */ 21630f712c9SDave Chinner STATIC void 21730f712c9SDave Chinner xfs_bmap_forkoff_reset( 21830f712c9SDave Chinner xfs_inode_t *ip, 21930f712c9SDave Chinner int whichfork) 22030f712c9SDave Chinner { 22130f712c9SDave Chinner if (whichfork == XFS_ATTR_FORK && 22230f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_DEV && 22330f712c9SDave Chinner ip->i_d.di_format != XFS_DINODE_FMT_BTREE) { 22430f712c9SDave Chinner uint dfl_forkoff = xfs_default_attroffset(ip) >> 3; 22530f712c9SDave Chinner 22630f712c9SDave Chinner if (dfl_forkoff > ip->i_d.di_forkoff) 22730f712c9SDave Chinner ip->i_d.di_forkoff = dfl_forkoff; 22830f712c9SDave Chinner } 22930f712c9SDave Chinner } 23030f712c9SDave Chinner 23130f712c9SDave Chinner #ifdef DEBUG 23230f712c9SDave Chinner STATIC struct xfs_buf * 23330f712c9SDave Chinner xfs_bmap_get_bp( 23430f712c9SDave Chinner struct xfs_btree_cur *cur, 23530f712c9SDave Chinner xfs_fsblock_t bno) 23630f712c9SDave Chinner { 237e6631f85SDave Chinner struct xfs_log_item *lip; 23830f712c9SDave Chinner int i; 23930f712c9SDave Chinner 24030f712c9SDave Chinner if (!cur) 24130f712c9SDave Chinner return NULL; 24230f712c9SDave Chinner 24330f712c9SDave Chinner for (i = 0; i < XFS_BTREE_MAXLEVELS; i++) { 24430f712c9SDave Chinner if (!cur->bc_bufs[i]) 24530f712c9SDave Chinner break; 24630f712c9SDave Chinner if (XFS_BUF_ADDR(cur->bc_bufs[i]) == bno) 24730f712c9SDave Chinner return cur->bc_bufs[i]; 24830f712c9SDave Chinner } 24930f712c9SDave Chinner 25030f712c9SDave Chinner /* Chase down all the log items to see if the bp is there */ 251e6631f85SDave Chinner list_for_each_entry(lip, &cur->bc_tp->t_items, li_trans) { 252e6631f85SDave Chinner struct xfs_buf_log_item *bip = (struct xfs_buf_log_item *)lip; 253e6631f85SDave Chinner 25430f712c9SDave Chinner if (bip->bli_item.li_type == XFS_LI_BUF && 25530f712c9SDave Chinner XFS_BUF_ADDR(bip->bli_buf) == bno) 25630f712c9SDave Chinner return bip->bli_buf; 25730f712c9SDave Chinner } 25830f712c9SDave Chinner 25930f712c9SDave Chinner return NULL; 26030f712c9SDave Chinner } 26130f712c9SDave Chinner 26230f712c9SDave Chinner STATIC void 26330f712c9SDave Chinner xfs_check_block( 26430f712c9SDave Chinner struct xfs_btree_block *block, 26530f712c9SDave Chinner xfs_mount_t *mp, 26630f712c9SDave Chinner int root, 26730f712c9SDave Chinner short sz) 26830f712c9SDave Chinner { 26930f712c9SDave Chinner int i, j, dmxr; 27030f712c9SDave Chinner __be64 *pp, *thispa; /* pointer to block address */ 27130f712c9SDave Chinner xfs_bmbt_key_t *prevp, *keyp; 27230f712c9SDave Chinner 27330f712c9SDave Chinner ASSERT(be16_to_cpu(block->bb_level) > 0); 27430f712c9SDave Chinner 27530f712c9SDave Chinner prevp = NULL; 27630f712c9SDave Chinner for( i = 1; i <= xfs_btree_get_numrecs(block); i++) { 27730f712c9SDave Chinner dmxr = mp->m_bmap_dmxr[0]; 27830f712c9SDave Chinner keyp = XFS_BMBT_KEY_ADDR(mp, block, i); 27930f712c9SDave Chinner 28030f712c9SDave Chinner if (prevp) { 28130f712c9SDave Chinner ASSERT(be64_to_cpu(prevp->br_startoff) < 28230f712c9SDave Chinner be64_to_cpu(keyp->br_startoff)); 28330f712c9SDave Chinner } 28430f712c9SDave Chinner prevp = keyp; 28530f712c9SDave Chinner 28630f712c9SDave Chinner /* 28730f712c9SDave Chinner * Compare the block numbers to see if there are dups. 28830f712c9SDave Chinner */ 28930f712c9SDave Chinner if (root) 29030f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, i, sz); 29130f712c9SDave Chinner else 29230f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, i, dmxr); 29330f712c9SDave Chinner 29430f712c9SDave Chinner for (j = i+1; j <= be16_to_cpu(block->bb_numrecs); j++) { 29530f712c9SDave Chinner if (root) 29630f712c9SDave Chinner thispa = XFS_BMAP_BROOT_PTR_ADDR(mp, block, j, sz); 29730f712c9SDave Chinner else 29830f712c9SDave Chinner thispa = XFS_BMBT_PTR_ADDR(mp, block, j, dmxr); 29930f712c9SDave Chinner if (*thispa == *pp) { 30030f712c9SDave Chinner xfs_warn(mp, "%s: thispa(%d) == pp(%d) %Ld", 30130f712c9SDave Chinner __func__, j, i, 30230f712c9SDave Chinner (unsigned long long)be64_to_cpu(*thispa)); 303cec57256SDarrick J. Wong xfs_err(mp, "%s: ptrs are equal in node\n", 30430f712c9SDave Chinner __func__); 305cec57256SDarrick J. Wong xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); 30630f712c9SDave Chinner } 30730f712c9SDave Chinner } 30830f712c9SDave Chinner } 30930f712c9SDave Chinner } 31030f712c9SDave Chinner 31130f712c9SDave Chinner /* 31230f712c9SDave Chinner * Check that the extents for the inode ip are in the right order in all 313e3543819SDave Chinner * btree leaves. THis becomes prohibitively expensive for large extent count 314e3543819SDave Chinner * files, so don't bother with inodes that have more than 10,000 extents in 315e3543819SDave Chinner * them. The btree record ordering checks will still be done, so for such large 316e3543819SDave Chinner * bmapbt constructs that is going to catch most corruptions. 31730f712c9SDave Chinner */ 31830f712c9SDave Chinner STATIC void 31930f712c9SDave Chinner xfs_bmap_check_leaf_extents( 32030f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor or null */ 32130f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 32230f712c9SDave Chinner int whichfork) /* data or attr fork */ 32330f712c9SDave Chinner { 32430f712c9SDave Chinner struct xfs_btree_block *block; /* current btree block */ 32530f712c9SDave Chinner xfs_fsblock_t bno; /* block # of "block" */ 32630f712c9SDave Chinner xfs_buf_t *bp; /* buffer for "block" */ 32730f712c9SDave Chinner int error; /* error return value */ 32830f712c9SDave Chinner xfs_extnum_t i=0, j; /* index into the extents list */ 32930f712c9SDave Chinner xfs_ifork_t *ifp; /* fork structure */ 33030f712c9SDave Chinner int level; /* btree level, for checking */ 33130f712c9SDave Chinner xfs_mount_t *mp; /* file system mount structure */ 33230f712c9SDave Chinner __be64 *pp; /* pointer to block address */ 33330f712c9SDave Chinner xfs_bmbt_rec_t *ep; /* pointer to current extent */ 33430f712c9SDave Chinner xfs_bmbt_rec_t last = {0, 0}; /* last extent in prev block */ 33530f712c9SDave Chinner xfs_bmbt_rec_t *nextp; /* pointer to next extent */ 33630f712c9SDave Chinner int bp_release = 0; 33730f712c9SDave Chinner 33830f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) { 33930f712c9SDave Chinner return; 34030f712c9SDave Chinner } 34130f712c9SDave Chinner 342e3543819SDave Chinner /* skip large extent count inodes */ 343e3543819SDave Chinner if (ip->i_d.di_nextents > 10000) 344e3543819SDave Chinner return; 345e3543819SDave Chinner 34630f712c9SDave Chinner bno = NULLFSBLOCK; 34730f712c9SDave Chinner mp = ip->i_mount; 34830f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 34930f712c9SDave Chinner block = ifp->if_broot; 35030f712c9SDave Chinner /* 35130f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 35230f712c9SDave Chinner */ 35330f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 35430f712c9SDave Chinner ASSERT(level > 0); 35530f712c9SDave Chinner xfs_check_block(block, mp, 1, ifp->if_broot_bytes); 35630f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 35730f712c9SDave Chinner bno = be64_to_cpu(*pp); 35830f712c9SDave Chinner 359d5cf09baSChristoph Hellwig ASSERT(bno != NULLFSBLOCK); 36030f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGNO(mp, bno) < mp->m_sb.sb_agcount); 36130f712c9SDave Chinner ASSERT(XFS_FSB_TO_AGBNO(mp, bno) < mp->m_sb.sb_agblocks); 36230f712c9SDave Chinner 36330f712c9SDave Chinner /* 36430f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 36530f712c9SDave Chinner * pointer (leftmost) at each level. 36630f712c9SDave Chinner */ 36730f712c9SDave Chinner while (level-- > 0) { 36830f712c9SDave Chinner /* See if buf is in cur first */ 36930f712c9SDave Chinner bp_release = 0; 37030f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 37130f712c9SDave Chinner if (!bp) { 37230f712c9SDave Chinner bp_release = 1; 37330f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 37430f712c9SDave Chinner XFS_BMAP_BTREE_REF, 37530f712c9SDave Chinner &xfs_bmbt_buf_ops); 37630f712c9SDave Chinner if (error) 37730f712c9SDave Chinner goto error_norelse; 37830f712c9SDave Chinner } 37930f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 38030f712c9SDave Chinner if (level == 0) 38130f712c9SDave Chinner break; 38230f712c9SDave Chinner 38330f712c9SDave Chinner /* 38430f712c9SDave Chinner * Check this block for basic sanity (increasing keys and 38530f712c9SDave Chinner * no duplicate blocks). 38630f712c9SDave Chinner */ 38730f712c9SDave Chinner 38830f712c9SDave Chinner xfs_check_block(block, mp, 0, 0); 38930f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 39030f712c9SDave Chinner bno = be64_to_cpu(*pp); 391c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 39259f6fec3SDarrick J. Wong xfs_verify_fsbno(mp, bno), error0); 39330f712c9SDave Chinner if (bp_release) { 39430f712c9SDave Chinner bp_release = 0; 39530f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 39630f712c9SDave Chinner } 39730f712c9SDave Chinner } 39830f712c9SDave Chinner 39930f712c9SDave Chinner /* 40030f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 40130f712c9SDave Chinner */ 40230f712c9SDave Chinner i = 0; 40330f712c9SDave Chinner 40430f712c9SDave Chinner /* 40530f712c9SDave Chinner * Loop over all leaf nodes checking that all extents are in the right order. 40630f712c9SDave Chinner */ 40730f712c9SDave Chinner for (;;) { 40830f712c9SDave Chinner xfs_fsblock_t nextbno; 40930f712c9SDave Chinner xfs_extnum_t num_recs; 41030f712c9SDave Chinner 41130f712c9SDave Chinner 41230f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 41330f712c9SDave Chinner 41430f712c9SDave Chinner /* 41530f712c9SDave Chinner * Read-ahead the next leaf block, if any. 41630f712c9SDave Chinner */ 41730f712c9SDave Chinner 41830f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 41930f712c9SDave Chinner 42030f712c9SDave Chinner /* 42130f712c9SDave Chinner * Check all the extents to make sure they are OK. 42230f712c9SDave Chinner * If we had a previous block, the last entry should 42330f712c9SDave Chinner * conform with the first entry in this one. 42430f712c9SDave Chinner */ 42530f712c9SDave Chinner 42630f712c9SDave Chinner ep = XFS_BMBT_REC_ADDR(mp, block, 1); 42730f712c9SDave Chinner if (i) { 42830f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(&last) + 42930f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(&last) <= 43030f712c9SDave Chinner xfs_bmbt_disk_get_startoff(ep)); 43130f712c9SDave Chinner } 43230f712c9SDave Chinner for (j = 1; j < num_recs; j++) { 43330f712c9SDave Chinner nextp = XFS_BMBT_REC_ADDR(mp, block, j + 1); 43430f712c9SDave Chinner ASSERT(xfs_bmbt_disk_get_startoff(ep) + 43530f712c9SDave Chinner xfs_bmbt_disk_get_blockcount(ep) <= 43630f712c9SDave Chinner xfs_bmbt_disk_get_startoff(nextp)); 43730f712c9SDave Chinner ep = nextp; 43830f712c9SDave Chinner } 43930f712c9SDave Chinner 44030f712c9SDave Chinner last = *ep; 44130f712c9SDave Chinner i += num_recs; 44230f712c9SDave Chinner if (bp_release) { 44330f712c9SDave Chinner bp_release = 0; 44430f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 44530f712c9SDave Chinner } 44630f712c9SDave Chinner bno = nextbno; 44730f712c9SDave Chinner /* 44830f712c9SDave Chinner * If we've reached the end, stop. 44930f712c9SDave Chinner */ 45030f712c9SDave Chinner if (bno == NULLFSBLOCK) 45130f712c9SDave Chinner break; 45230f712c9SDave Chinner 45330f712c9SDave Chinner bp_release = 0; 45430f712c9SDave Chinner bp = xfs_bmap_get_bp(cur, XFS_FSB_TO_DADDR(mp, bno)); 45530f712c9SDave Chinner if (!bp) { 45630f712c9SDave Chinner bp_release = 1; 45730f712c9SDave Chinner error = xfs_btree_read_bufl(mp, NULL, bno, 0, &bp, 45830f712c9SDave Chinner XFS_BMAP_BTREE_REF, 45930f712c9SDave Chinner &xfs_bmbt_buf_ops); 46030f712c9SDave Chinner if (error) 46130f712c9SDave Chinner goto error_norelse; 46230f712c9SDave Chinner } 46330f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 46430f712c9SDave Chinner } 465a5fd276bSLuis de Bethencourt 46630f712c9SDave Chinner return; 46730f712c9SDave Chinner 46830f712c9SDave Chinner error0: 46930f712c9SDave Chinner xfs_warn(mp, "%s: at error0", __func__); 47030f712c9SDave Chinner if (bp_release) 47130f712c9SDave Chinner xfs_trans_brelse(NULL, bp); 47230f712c9SDave Chinner error_norelse: 47330f712c9SDave Chinner xfs_warn(mp, "%s: BAD after btree leaves for %d extents", 47430f712c9SDave Chinner __func__, i); 475cec57256SDarrick J. Wong xfs_err(mp, "%s: CORRUPTED BTREE OR SOMETHING", __func__); 476cec57256SDarrick J. Wong xfs_force_shutdown(mp, SHUTDOWN_CORRUPT_INCORE); 47730f712c9SDave Chinner return; 47830f712c9SDave Chinner } 47930f712c9SDave Chinner 48030f712c9SDave Chinner /* 48130f712c9SDave Chinner * Validate that the bmbt_irecs being returned from bmapi are valid 48230f712c9SDave Chinner * given the caller's original parameters. Specifically check the 48330f712c9SDave Chinner * ranges of the returned irecs to ensure that they only extend beyond 48430f712c9SDave Chinner * the given parameters if the XFS_BMAPI_ENTIRE flag was set. 48530f712c9SDave Chinner */ 48630f712c9SDave Chinner STATIC void 48730f712c9SDave Chinner xfs_bmap_validate_ret( 48830f712c9SDave Chinner xfs_fileoff_t bno, 48930f712c9SDave Chinner xfs_filblks_t len, 49030f712c9SDave Chinner int flags, 49130f712c9SDave Chinner xfs_bmbt_irec_t *mval, 49230f712c9SDave Chinner int nmap, 49330f712c9SDave Chinner int ret_nmap) 49430f712c9SDave Chinner { 49530f712c9SDave Chinner int i; /* index to map values */ 49630f712c9SDave Chinner 49730f712c9SDave Chinner ASSERT(ret_nmap <= nmap); 49830f712c9SDave Chinner 49930f712c9SDave Chinner for (i = 0; i < ret_nmap; i++) { 50030f712c9SDave Chinner ASSERT(mval[i].br_blockcount > 0); 50130f712c9SDave Chinner if (!(flags & XFS_BMAPI_ENTIRE)) { 50230f712c9SDave Chinner ASSERT(mval[i].br_startoff >= bno); 50330f712c9SDave Chinner ASSERT(mval[i].br_blockcount <= len); 50430f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount <= 50530f712c9SDave Chinner bno + len); 50630f712c9SDave Chinner } else { 50730f712c9SDave Chinner ASSERT(mval[i].br_startoff < bno + len); 50830f712c9SDave Chinner ASSERT(mval[i].br_startoff + mval[i].br_blockcount > 50930f712c9SDave Chinner bno); 51030f712c9SDave Chinner } 51130f712c9SDave Chinner ASSERT(i == 0 || 51230f712c9SDave Chinner mval[i - 1].br_startoff + mval[i - 1].br_blockcount == 51330f712c9SDave Chinner mval[i].br_startoff); 51430f712c9SDave Chinner ASSERT(mval[i].br_startblock != DELAYSTARTBLOCK && 51530f712c9SDave Chinner mval[i].br_startblock != HOLESTARTBLOCK); 51630f712c9SDave Chinner ASSERT(mval[i].br_state == XFS_EXT_NORM || 51730f712c9SDave Chinner mval[i].br_state == XFS_EXT_UNWRITTEN); 51830f712c9SDave Chinner } 51930f712c9SDave Chinner } 52030f712c9SDave Chinner 52130f712c9SDave Chinner #else 52230f712c9SDave Chinner #define xfs_bmap_check_leaf_extents(cur, ip, whichfork) do { } while (0) 5237bf7a193SDarrick J. Wong #define xfs_bmap_validate_ret(bno,len,flags,mval,onmap,nmap) do { } while (0) 52430f712c9SDave Chinner #endif /* DEBUG */ 52530f712c9SDave Chinner 52630f712c9SDave Chinner /* 52730f712c9SDave Chinner * bmap free list manipulation functions 52830f712c9SDave Chinner */ 52930f712c9SDave Chinner 53030f712c9SDave Chinner /* 53130f712c9SDave Chinner * Add the extent to the list of extents to be free at transaction end. 53230f712c9SDave Chinner * The list is maintained sorted (by block number). 53330f712c9SDave Chinner */ 53430f712c9SDave Chinner void 535fcb762f5SBrian Foster __xfs_bmap_add_free( 536340785ccSDarrick J. Wong struct xfs_mount *mp, 537340785ccSDarrick J. Wong struct xfs_defer_ops *dfops, 538340785ccSDarrick J. Wong xfs_fsblock_t bno, 539340785ccSDarrick J. Wong xfs_filblks_t len, 540fcb762f5SBrian Foster struct xfs_owner_info *oinfo, 541fcb762f5SBrian Foster bool skip_discard) 54230f712c9SDave Chinner { 543310a75a3SDarrick J. Wong struct xfs_extent_free_item *new; /* new element */ 54430f712c9SDave Chinner #ifdef DEBUG 54530f712c9SDave Chinner xfs_agnumber_t agno; 54630f712c9SDave Chinner xfs_agblock_t agbno; 54730f712c9SDave Chinner 54830f712c9SDave Chinner ASSERT(bno != NULLFSBLOCK); 54930f712c9SDave Chinner ASSERT(len > 0); 55030f712c9SDave Chinner ASSERT(len <= MAXEXTLEN); 55130f712c9SDave Chinner ASSERT(!isnullstartblock(bno)); 55230f712c9SDave Chinner agno = XFS_FSB_TO_AGNO(mp, bno); 55330f712c9SDave Chinner agbno = XFS_FSB_TO_AGBNO(mp, bno); 55430f712c9SDave Chinner ASSERT(agno < mp->m_sb.sb_agcount); 55530f712c9SDave Chinner ASSERT(agbno < mp->m_sb.sb_agblocks); 55630f712c9SDave Chinner ASSERT(len < mp->m_sb.sb_agblocks); 55730f712c9SDave Chinner ASSERT(agbno + len <= mp->m_sb.sb_agblocks); 55830f712c9SDave Chinner #endif 55930f712c9SDave Chinner ASSERT(xfs_bmap_free_item_zone != NULL); 560340785ccSDarrick J. Wong 56130f712c9SDave Chinner new = kmem_zone_alloc(xfs_bmap_free_item_zone, KM_SLEEP); 562310a75a3SDarrick J. Wong new->xefi_startblock = bno; 563310a75a3SDarrick J. Wong new->xefi_blockcount = (xfs_extlen_t)len; 564340785ccSDarrick J. Wong if (oinfo) 565340785ccSDarrick J. Wong new->xefi_oinfo = *oinfo; 566340785ccSDarrick J. Wong else 567340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&new->xefi_oinfo); 568fcb762f5SBrian Foster new->xefi_skip_discard = skip_discard; 569ba9e7802SDarrick J. Wong trace_xfs_bmap_free_defer(mp, XFS_FSB_TO_AGNO(mp, bno), 0, 570ba9e7802SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bno), len); 5712c3234d1SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_FREE, &new->xefi_list); 57230f712c9SDave Chinner } 57330f712c9SDave Chinner 57430f712c9SDave Chinner /* 57530f712c9SDave Chinner * Inode fork format manipulation functions 57630f712c9SDave Chinner */ 57730f712c9SDave Chinner 57830f712c9SDave Chinner /* 57930f712c9SDave Chinner * Transform a btree format file with only one leaf node, where the 58030f712c9SDave Chinner * extents list will fit in the inode, into an extents format file. 58130f712c9SDave Chinner * Since the file extents are already in-core, all we have to do is 58230f712c9SDave Chinner * give up the space for the btree root and pitch the leaf block. 58330f712c9SDave Chinner */ 58430f712c9SDave Chinner STATIC int /* error */ 58530f712c9SDave Chinner xfs_bmap_btree_to_extents( 58630f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 58730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 58830f712c9SDave Chinner xfs_btree_cur_t *cur, /* btree cursor */ 58930f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 59030f712c9SDave Chinner int whichfork) /* data or attr fork */ 59130f712c9SDave Chinner { 59230f712c9SDave Chinner /* REFERENCED */ 59330f712c9SDave Chinner struct xfs_btree_block *cblock;/* child btree block */ 59430f712c9SDave Chinner xfs_fsblock_t cbno; /* child block number */ 59530f712c9SDave Chinner xfs_buf_t *cbp; /* child block's buffer */ 59630f712c9SDave Chinner int error; /* error return value */ 59730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork data */ 59830f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 59930f712c9SDave Chinner __be64 *pp; /* ptr to block address */ 60030f712c9SDave Chinner struct xfs_btree_block *rblock;/* root btree block */ 601340785ccSDarrick J. Wong struct xfs_owner_info oinfo; 60230f712c9SDave Chinner 60330f712c9SDave Chinner mp = ip->i_mount; 60430f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 60560b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 60630f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 60730f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 60830f712c9SDave Chinner rblock = ifp->if_broot; 60930f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_level) == 1); 61030f712c9SDave Chinner ASSERT(be16_to_cpu(rblock->bb_numrecs) == 1); 61130f712c9SDave Chinner ASSERT(xfs_bmbt_maxrecs(mp, ifp->if_broot_bytes, 0) == 1); 61230f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, rblock, 1, ifp->if_broot_bytes); 61330f712c9SDave Chinner cbno = be64_to_cpu(*pp); 61430f712c9SDave Chinner *logflagsp = 0; 61530f712c9SDave Chinner #ifdef DEBUG 616f135761aSDarrick J. Wong XFS_WANT_CORRUPTED_RETURN(cur->bc_mp, 617f135761aSDarrick J. Wong xfs_btree_check_lptr(cur, cbno, 1)); 61830f712c9SDave Chinner #endif 61930f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, cbno, 0, &cbp, XFS_BMAP_BTREE_REF, 62030f712c9SDave Chinner &xfs_bmbt_buf_ops); 62130f712c9SDave Chinner if (error) 62230f712c9SDave Chinner return error; 62330f712c9SDave Chinner cblock = XFS_BUF_TO_BLOCK(cbp); 62430f712c9SDave Chinner if ((error = xfs_btree_check_block(cur, cblock, 0, cbp))) 62530f712c9SDave Chinner return error; 626340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&oinfo, ip->i_ino, whichfork); 62742b394a9SBrian Foster xfs_bmap_add_free(mp, cur->bc_tp->t_dfops, cbno, 1, &oinfo); 62830f712c9SDave Chinner ip->i_d.di_nblocks--; 62930f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, -1L); 63030f712c9SDave Chinner xfs_trans_binval(tp, cbp); 63130f712c9SDave Chinner if (cur->bc_bufs[0] == cbp) 63230f712c9SDave Chinner cur->bc_bufs[0] = NULL; 63330f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 63430f712c9SDave Chinner ASSERT(ifp->if_broot == NULL); 63530f712c9SDave Chinner ASSERT((ifp->if_flags & XFS_IFBROOT) == 0); 63630f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 63730f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 63830f712c9SDave Chinner return 0; 63930f712c9SDave Chinner } 64030f712c9SDave Chinner 64130f712c9SDave Chinner /* 64230f712c9SDave Chinner * Convert an extents-format file into a btree-format file. 64330f712c9SDave Chinner * The new file will have a root block (in the inode) and a single child block. 64430f712c9SDave Chinner */ 64530f712c9SDave Chinner STATIC int /* error */ 64630f712c9SDave Chinner xfs_bmap_extents_to_btree( 64781ba8f3eSBrian Foster struct xfs_trans *tp, /* transaction pointer */ 64881ba8f3eSBrian Foster struct xfs_inode *ip, /* incore inode pointer */ 64930f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first-block-allocated */ 65081ba8f3eSBrian Foster struct xfs_btree_cur **curp, /* cursor returned to caller */ 65130f712c9SDave Chinner int wasdel, /* converting a delayed alloc */ 65230f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 65330f712c9SDave Chinner int whichfork) /* data or attr fork */ 65430f712c9SDave Chinner { 65530f712c9SDave Chinner struct xfs_btree_block *ablock; /* allocated (child) bt block */ 65681ba8f3eSBrian Foster struct xfs_buf *abp; /* buffer for ablock */ 65781ba8f3eSBrian Foster struct xfs_alloc_arg args; /* allocation arguments */ 65881ba8f3eSBrian Foster struct xfs_bmbt_rec *arp; /* child record pointer */ 65930f712c9SDave Chinner struct xfs_btree_block *block; /* btree root block */ 66081ba8f3eSBrian Foster struct xfs_btree_cur *cur; /* bmap btree cursor */ 66130f712c9SDave Chinner int error; /* error return value */ 66281ba8f3eSBrian Foster struct xfs_ifork *ifp; /* inode fork pointer */ 66381ba8f3eSBrian Foster struct xfs_bmbt_key *kp; /* root block key pointer */ 66481ba8f3eSBrian Foster struct xfs_mount *mp; /* mount structure */ 66530f712c9SDave Chinner xfs_bmbt_ptr_t *pp; /* root block address pointer */ 666b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 667906abed5SChristoph Hellwig struct xfs_bmbt_irec rec; 668b2b1712aSChristoph Hellwig xfs_extnum_t cnt = 0; 66930f712c9SDave Chinner 67030f712c9SDave Chinner mp = ip->i_mount; 67160b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 67230f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 67330f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS); 67430f712c9SDave Chinner 67530f712c9SDave Chinner /* 67630f712c9SDave Chinner * Make space in the inode incore. 67730f712c9SDave Chinner */ 67830f712c9SDave Chinner xfs_iroot_realloc(ip, 1, whichfork); 67930f712c9SDave Chinner ifp->if_flags |= XFS_IFBROOT; 68030f712c9SDave Chinner 68130f712c9SDave Chinner /* 68230f712c9SDave Chinner * Fill in the root. 68330f712c9SDave Chinner */ 68430f712c9SDave Chinner block = ifp->if_broot; 68530f712c9SDave Chinner xfs_btree_init_block_int(mp, block, XFS_BUF_DADDR_NULL, 686b6f41e44SEric Sandeen XFS_BTNUM_BMAP, 1, 1, ip->i_ino, 687f88ae46bSEric Sandeen XFS_BTREE_LONG_PTRS); 68830f712c9SDave Chinner /* 68930f712c9SDave Chinner * Need a cursor. Can't allocate until bb_level is filled in. 69030f712c9SDave Chinner */ 69130f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 69230f712c9SDave Chinner cur->bc_private.b.firstblock = *firstblock; 69330f712c9SDave Chinner cur->bc_private.b.flags = wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 69430f712c9SDave Chinner /* 69530f712c9SDave Chinner * Convert to a btree with two levels, one record in root. 69630f712c9SDave Chinner */ 69730f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_BTREE); 69830f712c9SDave Chinner memset(&args, 0, sizeof(args)); 69930f712c9SDave Chinner args.tp = tp; 70030f712c9SDave Chinner args.mp = mp; 701340785ccSDarrick J. Wong xfs_rmap_ino_bmbt_owner(&args.oinfo, ip->i_ino, whichfork); 70230f712c9SDave Chinner args.firstblock = *firstblock; 70330f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 70430f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 70530f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(mp, ip->i_ino); 70681ba8f3eSBrian Foster } else if (tp->t_dfops->dop_low) { 70730f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 70830f712c9SDave Chinner args.fsbno = *firstblock; 70930f712c9SDave Chinner } else { 71030f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 71130f712c9SDave Chinner args.fsbno = *firstblock; 71230f712c9SDave Chinner } 71330f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 71430f712c9SDave Chinner args.wasdel = wasdel; 71530f712c9SDave Chinner *logflagsp = 0; 71630f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) { 71730f712c9SDave Chinner xfs_iroot_realloc(ip, -1, whichfork); 7182c4306f7SEric Sandeen ASSERT(ifp->if_broot == NULL); 7192c4306f7SEric Sandeen XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 72030f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 72130f712c9SDave Chinner return error; 72230f712c9SDave Chinner } 72390e2056dSDarrick J. Wong 7242fcc319dSChristoph Hellwig if (WARN_ON_ONCE(args.fsbno == NULLFSBLOCK)) { 7252fcc319dSChristoph Hellwig xfs_iroot_realloc(ip, -1, whichfork); 7262c4306f7SEric Sandeen ASSERT(ifp->if_broot == NULL); 7272c4306f7SEric Sandeen XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 7282fcc319dSChristoph Hellwig xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 7292fcc319dSChristoph Hellwig return -ENOSPC; 7302fcc319dSChristoph Hellwig } 73130f712c9SDave Chinner /* 73230f712c9SDave Chinner * Allocation can't fail, the space was reserved. 73330f712c9SDave Chinner */ 73430f712c9SDave Chinner ASSERT(*firstblock == NULLFSBLOCK || 735410d17f6SChristoph Hellwig args.agno >= XFS_FSB_TO_AGNO(mp, *firstblock)); 73630f712c9SDave Chinner *firstblock = cur->bc_private.b.firstblock = args.fsbno; 73730f712c9SDave Chinner cur->bc_private.b.allocated++; 73830f712c9SDave Chinner ip->i_d.di_nblocks++; 73930f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, XFS_TRANS_DQ_BCOUNT, 1L); 74030f712c9SDave Chinner abp = xfs_btree_get_bufl(mp, tp, args.fsbno, 0); 74130f712c9SDave Chinner /* 74230f712c9SDave Chinner * Fill in the child block. 74330f712c9SDave Chinner */ 74430f712c9SDave Chinner abp->b_ops = &xfs_bmbt_buf_ops; 74530f712c9SDave Chinner ablock = XFS_BUF_TO_BLOCK(abp); 74630f712c9SDave Chinner xfs_btree_init_block_int(mp, ablock, abp->b_bn, 747b6f41e44SEric Sandeen XFS_BTNUM_BMAP, 0, 0, ip->i_ino, 74830f712c9SDave Chinner XFS_BTREE_LONG_PTRS); 74930f712c9SDave Chinner 750b2b1712aSChristoph Hellwig for_each_xfs_iext(ifp, &icur, &rec) { 751906abed5SChristoph Hellwig if (isnullstartblock(rec.br_startblock)) 752906abed5SChristoph Hellwig continue; 753906abed5SChristoph Hellwig arp = XFS_BMBT_REC_ADDR(mp, ablock, 1 + cnt); 754906abed5SChristoph Hellwig xfs_bmbt_disk_set_all(arp, &rec); 755906abed5SChristoph Hellwig cnt++; 75630f712c9SDave Chinner } 75730f712c9SDave Chinner ASSERT(cnt == XFS_IFORK_NEXTENTS(ip, whichfork)); 75830f712c9SDave Chinner xfs_btree_set_numrecs(ablock, cnt); 75930f712c9SDave Chinner 76030f712c9SDave Chinner /* 76130f712c9SDave Chinner * Fill in the root key and pointer. 76230f712c9SDave Chinner */ 76330f712c9SDave Chinner kp = XFS_BMBT_KEY_ADDR(mp, block, 1); 76430f712c9SDave Chinner arp = XFS_BMBT_REC_ADDR(mp, ablock, 1); 76530f712c9SDave Chinner kp->br_startoff = cpu_to_be64(xfs_bmbt_disk_get_startoff(arp)); 76630f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, xfs_bmbt_get_maxrecs(cur, 76730f712c9SDave Chinner be16_to_cpu(block->bb_level))); 76830f712c9SDave Chinner *pp = cpu_to_be64(args.fsbno); 76930f712c9SDave Chinner 77030f712c9SDave Chinner /* 77130f712c9SDave Chinner * Do all this logging at the end so that 77230f712c9SDave Chinner * the root is at the right level. 77330f712c9SDave Chinner */ 77430f712c9SDave Chinner xfs_btree_log_block(cur, abp, XFS_BB_ALL_BITS); 77530f712c9SDave Chinner xfs_btree_log_recs(cur, abp, 1, be16_to_cpu(ablock->bb_numrecs)); 77630f712c9SDave Chinner ASSERT(*curp == NULL); 77730f712c9SDave Chinner *curp = cur; 77830f712c9SDave Chinner *logflagsp = XFS_ILOG_CORE | xfs_ilog_fbroot(whichfork); 77930f712c9SDave Chinner return 0; 78030f712c9SDave Chinner } 78130f712c9SDave Chinner 78230f712c9SDave Chinner /* 78330f712c9SDave Chinner * Convert a local file to an extents file. 78430f712c9SDave Chinner * This code is out of bounds for data forks of regular files, 78530f712c9SDave Chinner * since the file data needs to get logged so things will stay consistent. 78630f712c9SDave Chinner * (The bmap-level manipulations are ok, though). 78730f712c9SDave Chinner */ 78830f712c9SDave Chinner void 78930f712c9SDave Chinner xfs_bmap_local_to_extents_empty( 79030f712c9SDave Chinner struct xfs_inode *ip, 79130f712c9SDave Chinner int whichfork) 79230f712c9SDave Chinner { 79330f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 79430f712c9SDave Chinner 79560b4984fSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 79630f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 79730f712c9SDave Chinner ASSERT(ifp->if_bytes == 0); 79830f712c9SDave Chinner ASSERT(XFS_IFORK_NEXTENTS(ip, whichfork) == 0); 79930f712c9SDave Chinner 80030f712c9SDave Chinner xfs_bmap_forkoff_reset(ip, whichfork); 80130f712c9SDave Chinner ifp->if_flags &= ~XFS_IFINLINE; 80230f712c9SDave Chinner ifp->if_flags |= XFS_IFEXTENTS; 8036bdcf26aSChristoph Hellwig ifp->if_u1.if_root = NULL; 8046bdcf26aSChristoph Hellwig ifp->if_height = 0; 80530f712c9SDave Chinner XFS_IFORK_FMT_SET(ip, whichfork, XFS_DINODE_FMT_EXTENTS); 80630f712c9SDave Chinner } 80730f712c9SDave Chinner 80830f712c9SDave Chinner 80930f712c9SDave Chinner STATIC int /* error */ 81030f712c9SDave Chinner xfs_bmap_local_to_extents( 81130f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 81230f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 81330f712c9SDave Chinner xfs_fsblock_t *firstblock, /* first block allocated in xaction */ 81430f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed by transaction */ 81530f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 81630f712c9SDave Chinner int whichfork, 81730f712c9SDave Chinner void (*init_fn)(struct xfs_trans *tp, 81830f712c9SDave Chinner struct xfs_buf *bp, 81930f712c9SDave Chinner struct xfs_inode *ip, 82030f712c9SDave Chinner struct xfs_ifork *ifp)) 82130f712c9SDave Chinner { 82230f712c9SDave Chinner int error = 0; 82330f712c9SDave Chinner int flags; /* logging flags returned */ 82430f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 82530f712c9SDave Chinner xfs_alloc_arg_t args; /* allocation arguments */ 82630f712c9SDave Chinner xfs_buf_t *bp; /* buffer for extent block */ 82750bb44c2SChristoph Hellwig struct xfs_bmbt_irec rec; 828b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 82930f712c9SDave Chinner 83030f712c9SDave Chinner /* 83130f712c9SDave Chinner * We don't want to deal with the case of keeping inode data inline yet. 83230f712c9SDave Chinner * So sending the data fork of a regular inode is invalid. 83330f712c9SDave Chinner */ 834c19b3b05SDave Chinner ASSERT(!(S_ISREG(VFS_I(ip)->i_mode) && whichfork == XFS_DATA_FORK)); 83530f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 83630f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 83730f712c9SDave Chinner 83830f712c9SDave Chinner if (!ifp->if_bytes) { 83930f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 84030f712c9SDave Chinner flags = XFS_ILOG_CORE; 84130f712c9SDave Chinner goto done; 84230f712c9SDave Chinner } 84330f712c9SDave Chinner 84430f712c9SDave Chinner flags = 0; 84530f712c9SDave Chinner error = 0; 8466bdcf26aSChristoph Hellwig ASSERT((ifp->if_flags & (XFS_IFINLINE|XFS_IFEXTENTS)) == XFS_IFINLINE); 84730f712c9SDave Chinner memset(&args, 0, sizeof(args)); 84830f712c9SDave Chinner args.tp = tp; 84930f712c9SDave Chinner args.mp = ip->i_mount; 850340785ccSDarrick J. Wong xfs_rmap_ino_owner(&args.oinfo, ip->i_ino, whichfork, 0); 85130f712c9SDave Chinner args.firstblock = *firstblock; 85230f712c9SDave Chinner /* 85330f712c9SDave Chinner * Allocate a block. We know we need only one, since the 85430f712c9SDave Chinner * file currently fits in an inode. 85530f712c9SDave Chinner */ 85630f712c9SDave Chinner if (*firstblock == NULLFSBLOCK) { 85730f712c9SDave Chinner args.fsbno = XFS_INO_TO_FSB(args.mp, ip->i_ino); 85830f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 85930f712c9SDave Chinner } else { 86030f712c9SDave Chinner args.fsbno = *firstblock; 86130f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 86230f712c9SDave Chinner } 86330f712c9SDave Chinner args.total = total; 86430f712c9SDave Chinner args.minlen = args.maxlen = args.prod = 1; 86530f712c9SDave Chinner error = xfs_alloc_vextent(&args); 86630f712c9SDave Chinner if (error) 86730f712c9SDave Chinner goto done; 86830f712c9SDave Chinner 86930f712c9SDave Chinner /* Can't fail, the space was reserved. */ 87030f712c9SDave Chinner ASSERT(args.fsbno != NULLFSBLOCK); 87130f712c9SDave Chinner ASSERT(args.len == 1); 87230f712c9SDave Chinner *firstblock = args.fsbno; 87330f712c9SDave Chinner bp = xfs_btree_get_bufl(args.mp, tp, args.fsbno, 0); 87430f712c9SDave Chinner 875fe22d552SDave Chinner /* 876b7cdc66bSBrian Foster * Initialize the block, copy the data and log the remote buffer. 877fe22d552SDave Chinner * 878b7cdc66bSBrian Foster * The callout is responsible for logging because the remote format 879b7cdc66bSBrian Foster * might differ from the local format and thus we don't know how much to 880b7cdc66bSBrian Foster * log here. Note that init_fn must also set the buffer log item type 881b7cdc66bSBrian Foster * correctly. 882fe22d552SDave Chinner */ 88330f712c9SDave Chinner init_fn(tp, bp, ip, ifp); 88430f712c9SDave Chinner 885b7cdc66bSBrian Foster /* account for the change in fork size */ 88630f712c9SDave Chinner xfs_idata_realloc(ip, -ifp->if_bytes, whichfork); 88730f712c9SDave Chinner xfs_bmap_local_to_extents_empty(ip, whichfork); 88830f712c9SDave Chinner flags |= XFS_ILOG_CORE; 88930f712c9SDave Chinner 8906bdcf26aSChristoph Hellwig ifp->if_u1.if_root = NULL; 8916bdcf26aSChristoph Hellwig ifp->if_height = 0; 8926bdcf26aSChristoph Hellwig 89350bb44c2SChristoph Hellwig rec.br_startoff = 0; 89450bb44c2SChristoph Hellwig rec.br_startblock = args.fsbno; 89550bb44c2SChristoph Hellwig rec.br_blockcount = 1; 89650bb44c2SChristoph Hellwig rec.br_state = XFS_EXT_NORM; 897b2b1712aSChristoph Hellwig xfs_iext_first(ifp, &icur); 8980254c2f2SChristoph Hellwig xfs_iext_insert(ip, &icur, &rec, 0); 89950bb44c2SChristoph Hellwig 90030f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 1); 90130f712c9SDave Chinner ip->i_d.di_nblocks = 1; 90230f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, 90330f712c9SDave Chinner XFS_TRANS_DQ_BCOUNT, 1L); 90430f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 90530f712c9SDave Chinner 90630f712c9SDave Chinner done: 90730f712c9SDave Chinner *logflagsp = flags; 90830f712c9SDave Chinner return error; 90930f712c9SDave Chinner } 91030f712c9SDave Chinner 91130f712c9SDave Chinner /* 91230f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle btree format files. 91330f712c9SDave Chinner */ 91430f712c9SDave Chinner STATIC int /* error */ 91530f712c9SDave Chinner xfs_bmap_add_attrfork_btree( 91630f712c9SDave Chinner xfs_trans_t *tp, /* transaction pointer */ 91730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 91830f712c9SDave Chinner int *flags) /* inode logging flags */ 91930f712c9SDave Chinner { 92030f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 92130f712c9SDave Chinner int error; /* error return value */ 92230f712c9SDave Chinner xfs_mount_t *mp; /* file system mount struct */ 92330f712c9SDave Chinner int stat; /* newroot status */ 92430f712c9SDave Chinner 92530f712c9SDave Chinner mp = ip->i_mount; 92630f712c9SDave Chinner if (ip->i_df.if_broot_bytes <= XFS_IFORK_DSIZE(ip)) 92730f712c9SDave Chinner *flags |= XFS_ILOG_DBROOT; 92830f712c9SDave Chinner else { 92930f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, XFS_DATA_FORK); 930825d75cdSBrian Foster cur->bc_private.b.firstblock = tp->t_firstblock; 931b5cfbc22SChristoph Hellwig error = xfs_bmbt_lookup_first(cur, &stat); 932b5cfbc22SChristoph Hellwig if (error) 93330f712c9SDave Chinner goto error0; 93430f712c9SDave Chinner /* must be at least one entry */ 935c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, stat == 1, error0); 93630f712c9SDave Chinner if ((error = xfs_btree_new_iroot(cur, flags, &stat))) 93730f712c9SDave Chinner goto error0; 93830f712c9SDave Chinner if (stat == 0) { 93930f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 9402451337dSDave Chinner return -ENOSPC; 94130f712c9SDave Chinner } 942825d75cdSBrian Foster tp->t_firstblock = cur->bc_private.b.firstblock; 94330f712c9SDave Chinner cur->bc_private.b.allocated = 0; 94430f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_NOERROR); 94530f712c9SDave Chinner } 94630f712c9SDave Chinner return 0; 94730f712c9SDave Chinner error0: 94830f712c9SDave Chinner xfs_btree_del_cursor(cur, XFS_BTREE_ERROR); 94930f712c9SDave Chinner return error; 95030f712c9SDave Chinner } 95130f712c9SDave Chinner 95230f712c9SDave Chinner /* 95330f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle extents format files. 95430f712c9SDave Chinner */ 95530f712c9SDave Chinner STATIC int /* error */ 95630f712c9SDave Chinner xfs_bmap_add_attrfork_extents( 95781ba8f3eSBrian Foster struct xfs_trans *tp, /* transaction pointer */ 95881ba8f3eSBrian Foster struct xfs_inode *ip, /* incore inode pointer */ 95930f712c9SDave Chinner int *flags) /* inode logging flags */ 96030f712c9SDave Chinner { 96130f712c9SDave Chinner xfs_btree_cur_t *cur; /* bmap btree cursor */ 96230f712c9SDave Chinner int error; /* error return value */ 96330f712c9SDave Chinner 96430f712c9SDave Chinner if (ip->i_d.di_nextents * sizeof(xfs_bmbt_rec_t) <= XFS_IFORK_DSIZE(ip)) 96530f712c9SDave Chinner return 0; 96630f712c9SDave Chinner cur = NULL; 967825d75cdSBrian Foster error = xfs_bmap_extents_to_btree(tp, ip, &tp->t_firstblock, &cur, 0, 968825d75cdSBrian Foster flags, XFS_DATA_FORK); 96930f712c9SDave Chinner if (cur) { 97030f712c9SDave Chinner cur->bc_private.b.allocated = 0; 97130f712c9SDave Chinner xfs_btree_del_cursor(cur, 97230f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 97330f712c9SDave Chinner } 97430f712c9SDave Chinner return error; 97530f712c9SDave Chinner } 97630f712c9SDave Chinner 97730f712c9SDave Chinner /* 97830f712c9SDave Chinner * Called from xfs_bmap_add_attrfork to handle local format files. Each 97930f712c9SDave Chinner * different data fork content type needs a different callout to do the 98030f712c9SDave Chinner * conversion. Some are basic and only require special block initialisation 98130f712c9SDave Chinner * callouts for the data formating, others (directories) are so specialised they 98230f712c9SDave Chinner * handle everything themselves. 98330f712c9SDave Chinner * 98430f712c9SDave Chinner * XXX (dgc): investigate whether directory conversion can use the generic 98530f712c9SDave Chinner * formatting callout. It should be possible - it's just a very complex 98630f712c9SDave Chinner * formatter. 98730f712c9SDave Chinner */ 98830f712c9SDave Chinner STATIC int /* error */ 98930f712c9SDave Chinner xfs_bmap_add_attrfork_local( 990825d75cdSBrian Foster struct xfs_trans *tp, /* transaction pointer */ 991825d75cdSBrian Foster struct xfs_inode *ip, /* incore inode pointer */ 99230f712c9SDave Chinner int *flags) /* inode logging flags */ 99330f712c9SDave Chinner { 994825d75cdSBrian Foster struct xfs_da_args dargs; /* args for dir/attr code */ 99530f712c9SDave Chinner 99630f712c9SDave Chinner if (ip->i_df.if_bytes <= XFS_IFORK_DSIZE(ip)) 99730f712c9SDave Chinner return 0; 99830f712c9SDave Chinner 999c19b3b05SDave Chinner if (S_ISDIR(VFS_I(ip)->i_mode)) { 100030f712c9SDave Chinner memset(&dargs, 0, sizeof(dargs)); 100130f712c9SDave Chinner dargs.geo = ip->i_mount->m_dir_geo; 100230f712c9SDave Chinner dargs.dp = ip; 100330f712c9SDave Chinner dargs.total = dargs.geo->fsbcount; 100430f712c9SDave Chinner dargs.whichfork = XFS_DATA_FORK; 100530f712c9SDave Chinner dargs.trans = tp; 100630f712c9SDave Chinner return xfs_dir2_sf_to_block(&dargs); 100730f712c9SDave Chinner } 100830f712c9SDave Chinner 1009c19b3b05SDave Chinner if (S_ISLNK(VFS_I(ip)->i_mode)) 1010825d75cdSBrian Foster return xfs_bmap_local_to_extents(tp, ip, &tp->t_firstblock, 1, 101130f712c9SDave Chinner flags, XFS_DATA_FORK, 101230f712c9SDave Chinner xfs_symlink_local_to_remote); 101330f712c9SDave Chinner 101430f712c9SDave Chinner /* should only be called for types that support local format data */ 101530f712c9SDave Chinner ASSERT(0); 10162451337dSDave Chinner return -EFSCORRUPTED; 101730f712c9SDave Chinner } 101830f712c9SDave Chinner 101930f712c9SDave Chinner /* 102030f712c9SDave Chinner * Convert inode from non-attributed to attributed. 102130f712c9SDave Chinner * Must not be in a transaction, ip must not be locked. 102230f712c9SDave Chinner */ 102330f712c9SDave Chinner int /* error code */ 102430f712c9SDave Chinner xfs_bmap_add_attrfork( 102530f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 102630f712c9SDave Chinner int size, /* space new attribute needs */ 102730f712c9SDave Chinner int rsvd) /* xact may use reserved blks */ 102830f712c9SDave Chinner { 10292c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; /* freed extent records */ 103030f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 103130f712c9SDave Chinner xfs_trans_t *tp; /* transaction pointer */ 103230f712c9SDave Chinner int blks; /* space reservation */ 103330f712c9SDave Chinner int version = 1; /* superblock attr version */ 103430f712c9SDave Chinner int logflags; /* logging flags */ 103530f712c9SDave Chinner int error; /* error return value */ 103630f712c9SDave Chinner 103730f712c9SDave Chinner ASSERT(XFS_IFORK_Q(ip) == 0); 103830f712c9SDave Chinner 103930f712c9SDave Chinner mp = ip->i_mount; 104030f712c9SDave Chinner ASSERT(!XFS_NOT_DQATTACHED(mp, ip)); 1041253f4911SChristoph Hellwig 104230f712c9SDave Chinner blks = XFS_ADDAFORK_SPACE_RES(mp); 1043253f4911SChristoph Hellwig 1044253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_addafork, blks, 0, 1045253f4911SChristoph Hellwig rsvd ? XFS_TRANS_RESERVE : 0, &tp); 1046253f4911SChristoph Hellwig if (error) 104730f712c9SDave Chinner return error; 1048825d75cdSBrian Foster xfs_defer_init(tp, &dfops, &tp->t_firstblock); 1049253f4911SChristoph Hellwig 105030f712c9SDave Chinner xfs_ilock(ip, XFS_ILOCK_EXCL); 105130f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(tp, ip, blks, 0, rsvd ? 105230f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS | XFS_QMOPT_FORCE_RES : 105330f712c9SDave Chinner XFS_QMOPT_RES_REGBLKS); 105430f712c9SDave Chinner if (error) 105530f712c9SDave Chinner goto trans_cancel; 105630f712c9SDave Chinner if (XFS_IFORK_Q(ip)) 105730f712c9SDave Chinner goto trans_cancel; 10580f352f8eSDarrick J. Wong if (ip->i_d.di_anextents != 0) { 10590f352f8eSDarrick J. Wong error = -EFSCORRUPTED; 10600f352f8eSDarrick J. Wong goto trans_cancel; 10610f352f8eSDarrick J. Wong } 106230f712c9SDave Chinner if (ip->i_d.di_aformat != XFS_DINODE_FMT_EXTENTS) { 106330f712c9SDave Chinner /* 106430f712c9SDave Chinner * For inodes coming from pre-6.2 filesystems. 106530f712c9SDave Chinner */ 106630f712c9SDave Chinner ASSERT(ip->i_d.di_aformat == 0); 106730f712c9SDave Chinner ip->i_d.di_aformat = XFS_DINODE_FMT_EXTENTS; 106830f712c9SDave Chinner } 106930f712c9SDave Chinner 107030f712c9SDave Chinner xfs_trans_ijoin(tp, ip, 0); 107130f712c9SDave Chinner xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 107230f712c9SDave Chinner 107330f712c9SDave Chinner switch (ip->i_d.di_format) { 107430f712c9SDave Chinner case XFS_DINODE_FMT_DEV: 107530f712c9SDave Chinner ip->i_d.di_forkoff = roundup(sizeof(xfs_dev_t), 8) >> 3; 107630f712c9SDave Chinner break; 107730f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 107830f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 107930f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 108030f712c9SDave Chinner ip->i_d.di_forkoff = xfs_attr_shortform_bytesfit(ip, size); 108130f712c9SDave Chinner if (!ip->i_d.di_forkoff) 108230f712c9SDave Chinner ip->i_d.di_forkoff = xfs_default_attroffset(ip) >> 3; 108330f712c9SDave Chinner else if (mp->m_flags & XFS_MOUNT_ATTR2) 108430f712c9SDave Chinner version = 2; 108530f712c9SDave Chinner break; 108630f712c9SDave Chinner default: 108730f712c9SDave Chinner ASSERT(0); 10882451337dSDave Chinner error = -EINVAL; 108930f712c9SDave Chinner goto trans_cancel; 109030f712c9SDave Chinner } 109130f712c9SDave Chinner 109230f712c9SDave Chinner ASSERT(ip->i_afp == NULL); 109330f712c9SDave Chinner ip->i_afp = kmem_zone_zalloc(xfs_ifork_zone, KM_SLEEP); 109430f712c9SDave Chinner ip->i_afp->if_flags = XFS_IFEXTENTS; 109530f712c9SDave Chinner logflags = 0; 109630f712c9SDave Chinner switch (ip->i_d.di_format) { 109730f712c9SDave Chinner case XFS_DINODE_FMT_LOCAL: 1098825d75cdSBrian Foster error = xfs_bmap_add_attrfork_local(tp, ip, &logflags); 109930f712c9SDave Chinner break; 110030f712c9SDave Chinner case XFS_DINODE_FMT_EXTENTS: 1101825d75cdSBrian Foster error = xfs_bmap_add_attrfork_extents(tp, ip, &logflags); 110230f712c9SDave Chinner break; 110330f712c9SDave Chinner case XFS_DINODE_FMT_BTREE: 1104825d75cdSBrian Foster error = xfs_bmap_add_attrfork_btree(tp, ip, &logflags); 110530f712c9SDave Chinner break; 110630f712c9SDave Chinner default: 110730f712c9SDave Chinner error = 0; 110830f712c9SDave Chinner break; 110930f712c9SDave Chinner } 111030f712c9SDave Chinner if (logflags) 111130f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 111230f712c9SDave Chinner if (error) 111330f712c9SDave Chinner goto bmap_cancel; 111430f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb) || 111530f712c9SDave Chinner (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2)) { 111661e63ecbSDave Chinner bool log_sb = false; 111730f712c9SDave Chinner 111830f712c9SDave Chinner spin_lock(&mp->m_sb_lock); 111930f712c9SDave Chinner if (!xfs_sb_version_hasattr(&mp->m_sb)) { 112030f712c9SDave Chinner xfs_sb_version_addattr(&mp->m_sb); 112161e63ecbSDave Chinner log_sb = true; 112230f712c9SDave Chinner } 112330f712c9SDave Chinner if (!xfs_sb_version_hasattr2(&mp->m_sb) && version == 2) { 112430f712c9SDave Chinner xfs_sb_version_addattr2(&mp->m_sb); 112561e63ecbSDave Chinner log_sb = true; 112630f712c9SDave Chinner } 112730f712c9SDave Chinner spin_unlock(&mp->m_sb_lock); 112861e63ecbSDave Chinner if (log_sb) 112961e63ecbSDave Chinner xfs_log_sb(tp); 113030f712c9SDave Chinner } 113130f712c9SDave Chinner 11328ad7c629SChristoph Hellwig error = xfs_defer_finish(&tp, &dfops); 113330f712c9SDave Chinner if (error) 113430f712c9SDave Chinner goto bmap_cancel; 113570393313SChristoph Hellwig error = xfs_trans_commit(tp); 113630f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 113730f712c9SDave Chinner return error; 113830f712c9SDave Chinner 113930f712c9SDave Chinner bmap_cancel: 11402c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 114130f712c9SDave Chinner trans_cancel: 11424906e215SChristoph Hellwig xfs_trans_cancel(tp); 114330f712c9SDave Chinner xfs_iunlock(ip, XFS_ILOCK_EXCL); 114430f712c9SDave Chinner return error; 114530f712c9SDave Chinner } 114630f712c9SDave Chinner 114730f712c9SDave Chinner /* 114830f712c9SDave Chinner * Internal and external extent tree search functions. 114930f712c9SDave Chinner */ 115030f712c9SDave Chinner 115130f712c9SDave Chinner /* 1152211e95bbSChristoph Hellwig * Read in extents from a btree-format inode. 115330f712c9SDave Chinner */ 1154211e95bbSChristoph Hellwig int 1155211e95bbSChristoph Hellwig xfs_iread_extents( 1156211e95bbSChristoph Hellwig struct xfs_trans *tp, 1157211e95bbSChristoph Hellwig struct xfs_inode *ip, 1158211e95bbSChristoph Hellwig int whichfork) 115930f712c9SDave Chinner { 1160211e95bbSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 1161e8e0e170SChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 1162211e95bbSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 1163211e95bbSChristoph Hellwig xfs_extnum_t nextents = XFS_IFORK_NEXTENTS(ip, whichfork); 1164211e95bbSChristoph Hellwig struct xfs_btree_block *block = ifp->if_broot; 1165b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 11666bdcf26aSChristoph Hellwig struct xfs_bmbt_irec new; 1167211e95bbSChristoph Hellwig xfs_fsblock_t bno; 1168211e95bbSChristoph Hellwig struct xfs_buf *bp; 1169211e95bbSChristoph Hellwig xfs_extnum_t i, j; 1170211e95bbSChristoph Hellwig int level; 1171211e95bbSChristoph Hellwig __be64 *pp; 1172211e95bbSChristoph Hellwig int error; 117330f712c9SDave Chinner 1174211e95bbSChristoph Hellwig ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 1175211e95bbSChristoph Hellwig 1176211e95bbSChristoph Hellwig if (unlikely(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { 1177211e95bbSChristoph Hellwig XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp); 1178211e95bbSChristoph Hellwig return -EFSCORRUPTED; 1179211e95bbSChristoph Hellwig } 1180211e95bbSChristoph Hellwig 118130f712c9SDave Chinner /* 118230f712c9SDave Chinner * Root level must use BMAP_BROOT_PTR_ADDR macro to get ptr out. 118330f712c9SDave Chinner */ 118430f712c9SDave Chinner level = be16_to_cpu(block->bb_level); 118530f712c9SDave Chinner ASSERT(level > 0); 118630f712c9SDave Chinner pp = XFS_BMAP_BROOT_PTR_ADDR(mp, block, 1, ifp->if_broot_bytes); 118730f712c9SDave Chinner bno = be64_to_cpu(*pp); 1188d5a91baeSDarrick J. Wong 118930f712c9SDave Chinner /* 119030f712c9SDave Chinner * Go down the tree until leaf level is reached, following the first 119130f712c9SDave Chinner * pointer (leftmost) at each level. 119230f712c9SDave Chinner */ 119330f712c9SDave Chinner while (level-- > 0) { 119430f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 119530f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 119630f712c9SDave Chinner if (error) 1197211e95bbSChristoph Hellwig goto out; 119830f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 119930f712c9SDave Chinner if (level == 0) 120030f712c9SDave Chinner break; 120130f712c9SDave Chinner pp = XFS_BMBT_PTR_ADDR(mp, block, 1, mp->m_bmap_dmxr[1]); 120230f712c9SDave Chinner bno = be64_to_cpu(*pp); 1203c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, 120459f6fec3SDarrick J. Wong xfs_verify_fsbno(mp, bno), out_brelse); 120530f712c9SDave Chinner xfs_trans_brelse(tp, bp); 120630f712c9SDave Chinner } 1207211e95bbSChristoph Hellwig 120830f712c9SDave Chinner /* 120930f712c9SDave Chinner * Here with bp and block set to the leftmost leaf node in the tree. 121030f712c9SDave Chinner */ 121130f712c9SDave Chinner i = 0; 1212b2b1712aSChristoph Hellwig xfs_iext_first(ifp, &icur); 1213211e95bbSChristoph Hellwig 121430f712c9SDave Chinner /* 121530f712c9SDave Chinner * Loop over all leaf nodes. Copy information to the extent records. 121630f712c9SDave Chinner */ 121730f712c9SDave Chinner for (;;) { 121830f712c9SDave Chinner xfs_bmbt_rec_t *frp; 121930f712c9SDave Chinner xfs_fsblock_t nextbno; 122030f712c9SDave Chinner xfs_extnum_t num_recs; 122130f712c9SDave Chinner 122230f712c9SDave Chinner num_recs = xfs_btree_get_numrecs(block); 1223211e95bbSChristoph Hellwig if (unlikely(i + num_recs > nextents)) { 122430f712c9SDave Chinner xfs_warn(ip->i_mount, 122530f712c9SDave Chinner "corrupt dinode %Lu, (btree extents).", 122630f712c9SDave Chinner (unsigned long long) ip->i_ino); 122790a58f95SDarrick J. Wong xfs_inode_verifier_error(ip, -EFSCORRUPTED, 122890a58f95SDarrick J. Wong __func__, block, sizeof(*block), 122990a58f95SDarrick J. Wong __this_address); 1230211e95bbSChristoph Hellwig error = -EFSCORRUPTED; 1231211e95bbSChristoph Hellwig goto out_brelse; 123230f712c9SDave Chinner } 123330f712c9SDave Chinner /* 123430f712c9SDave Chinner * Read-ahead the next leaf block, if any. 123530f712c9SDave Chinner */ 123630f712c9SDave Chinner nextbno = be64_to_cpu(block->bb_u.l.bb_rightsib); 123730f712c9SDave Chinner if (nextbno != NULLFSBLOCK) 123830f712c9SDave Chinner xfs_btree_reada_bufl(mp, nextbno, 1, 123930f712c9SDave Chinner &xfs_bmbt_buf_ops); 124030f712c9SDave Chinner /* 124130f712c9SDave Chinner * Copy records into the extent records. 124230f712c9SDave Chinner */ 124330f712c9SDave Chinner frp = XFS_BMBT_REC_ADDR(mp, block, 1); 12446bdcf26aSChristoph Hellwig for (j = 0; j < num_recs; j++, frp++, i++) { 124530b0984dSDarrick J. Wong xfs_failaddr_t fa; 124630b0984dSDarrick J. Wong 1247dac9c9b1SChristoph Hellwig xfs_bmbt_disk_get_all(frp, &new); 124830b0984dSDarrick J. Wong fa = xfs_bmap_validate_extent(ip, whichfork, &new); 124930b0984dSDarrick J. Wong if (fa) { 1250211e95bbSChristoph Hellwig error = -EFSCORRUPTED; 125130b0984dSDarrick J. Wong xfs_inode_verifier_error(ip, error, 125230b0984dSDarrick J. Wong "xfs_iread_extents(2)", 125330b0984dSDarrick J. Wong frp, sizeof(*frp), fa); 1254211e95bbSChristoph Hellwig goto out_brelse; 125530f712c9SDave Chinner } 12560254c2f2SChristoph Hellwig xfs_iext_insert(ip, &icur, &new, state); 1257b2b1712aSChristoph Hellwig trace_xfs_read_extent(ip, &icur, state, _THIS_IP_); 1258b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &icur); 125930f712c9SDave Chinner } 126030f712c9SDave Chinner xfs_trans_brelse(tp, bp); 126130f712c9SDave Chinner bno = nextbno; 126230f712c9SDave Chinner /* 126330f712c9SDave Chinner * If we've reached the end, stop. 126430f712c9SDave Chinner */ 126530f712c9SDave Chinner if (bno == NULLFSBLOCK) 126630f712c9SDave Chinner break; 126730f712c9SDave Chinner error = xfs_btree_read_bufl(mp, tp, bno, 0, &bp, 126830f712c9SDave Chinner XFS_BMAP_BTREE_REF, &xfs_bmbt_buf_ops); 126930f712c9SDave Chinner if (error) 1270211e95bbSChristoph Hellwig goto out; 127130f712c9SDave Chinner block = XFS_BUF_TO_BLOCK(bp); 127230f712c9SDave Chinner } 1273211e95bbSChristoph Hellwig 1274211e95bbSChristoph Hellwig if (i != XFS_IFORK_NEXTENTS(ip, whichfork)) { 1275211e95bbSChristoph Hellwig error = -EFSCORRUPTED; 1276211e95bbSChristoph Hellwig goto out; 1277211e95bbSChristoph Hellwig } 12785d829300SEric Sandeen ASSERT(i == xfs_iext_count(ifp)); 1279211e95bbSChristoph Hellwig 1280211e95bbSChristoph Hellwig ifp->if_flags |= XFS_IFEXTENTS; 128130f712c9SDave Chinner return 0; 1282211e95bbSChristoph Hellwig 1283211e95bbSChristoph Hellwig out_brelse: 128430f712c9SDave Chinner xfs_trans_brelse(tp, bp); 1285211e95bbSChristoph Hellwig out: 1286211e95bbSChristoph Hellwig xfs_iext_destroy(ifp); 1287211e95bbSChristoph Hellwig return error; 128830f712c9SDave Chinner } 128930f712c9SDave Chinner 129030f712c9SDave Chinner /* 129129b3e94aSChristoph Hellwig * Returns the relative block number of the first unused block(s) in the given 129229b3e94aSChristoph Hellwig * fork with at least "len" logically contiguous blocks free. This is the 129329b3e94aSChristoph Hellwig * lowest-address hole if the fork has holes, else the first block past the end 129429b3e94aSChristoph Hellwig * of fork. Return 0 if the fork is currently local (in-inode). 129530f712c9SDave Chinner */ 129630f712c9SDave Chinner int /* error */ 129730f712c9SDave Chinner xfs_bmap_first_unused( 129829b3e94aSChristoph Hellwig struct xfs_trans *tp, /* transaction pointer */ 129929b3e94aSChristoph Hellwig struct xfs_inode *ip, /* incore inode */ 130030f712c9SDave Chinner xfs_extlen_t len, /* size of hole to find */ 130130f712c9SDave Chinner xfs_fileoff_t *first_unused, /* unused block */ 130230f712c9SDave Chinner int whichfork) /* data or attr fork */ 130330f712c9SDave Chinner { 130429b3e94aSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 130529b3e94aSChristoph Hellwig struct xfs_bmbt_irec got; 1306b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 130729b3e94aSChristoph Hellwig xfs_fileoff_t lastaddr = 0; 130829b3e94aSChristoph Hellwig xfs_fileoff_t lowest, max; 130929b3e94aSChristoph Hellwig int error; 131030f712c9SDave Chinner 131130f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE || 131230f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS || 131330f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL); 131429b3e94aSChristoph Hellwig 131530f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) { 131630f712c9SDave Chinner *first_unused = 0; 131730f712c9SDave Chinner return 0; 131830f712c9SDave Chinner } 131929b3e94aSChristoph Hellwig 132029b3e94aSChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 132129b3e94aSChristoph Hellwig error = xfs_iread_extents(tp, ip, whichfork); 132229b3e94aSChristoph Hellwig if (error) 132330f712c9SDave Chinner return error; 132429b3e94aSChristoph Hellwig } 1325f2285c14SChristoph Hellwig 132629b3e94aSChristoph Hellwig lowest = max = *first_unused; 1327b2b1712aSChristoph Hellwig for_each_xfs_iext(ifp, &icur, &got) { 132830f712c9SDave Chinner /* 132930f712c9SDave Chinner * See if the hole before this extent will work. 133030f712c9SDave Chinner */ 1331f2285c14SChristoph Hellwig if (got.br_startoff >= lowest + len && 133229b3e94aSChristoph Hellwig got.br_startoff - max >= len) 133329b3e94aSChristoph Hellwig break; 1334f2285c14SChristoph Hellwig lastaddr = got.br_startoff + got.br_blockcount; 133530f712c9SDave Chinner max = XFS_FILEOFF_MAX(lastaddr, lowest); 133630f712c9SDave Chinner } 133729b3e94aSChristoph Hellwig 133830f712c9SDave Chinner *first_unused = max; 133930f712c9SDave Chinner return 0; 134030f712c9SDave Chinner } 134130f712c9SDave Chinner 134230f712c9SDave Chinner /* 134330f712c9SDave Chinner * Returns the file-relative block number of the last block - 1 before 134430f712c9SDave Chinner * last_block (input value) in the file. 134530f712c9SDave Chinner * This is not based on i_size, it is based on the extent records. 134630f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 134730f712c9SDave Chinner */ 134830f712c9SDave Chinner int /* error */ 134930f712c9SDave Chinner xfs_bmap_last_before( 135086685f7bSChristoph Hellwig struct xfs_trans *tp, /* transaction pointer */ 135186685f7bSChristoph Hellwig struct xfs_inode *ip, /* incore inode */ 135230f712c9SDave Chinner xfs_fileoff_t *last_block, /* last block */ 135330f712c9SDave Chinner int whichfork) /* data or attr fork */ 135430f712c9SDave Chinner { 135586685f7bSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 135686685f7bSChristoph Hellwig struct xfs_bmbt_irec got; 1357b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 135886685f7bSChristoph Hellwig int error; 135930f712c9SDave Chinner 136086685f7bSChristoph Hellwig switch (XFS_IFORK_FORMAT(ip, whichfork)) { 136186685f7bSChristoph Hellwig case XFS_DINODE_FMT_LOCAL: 136230f712c9SDave Chinner *last_block = 0; 136330f712c9SDave Chinner return 0; 136486685f7bSChristoph Hellwig case XFS_DINODE_FMT_BTREE: 136586685f7bSChristoph Hellwig case XFS_DINODE_FMT_EXTENTS: 136686685f7bSChristoph Hellwig break; 136786685f7bSChristoph Hellwig default: 136886685f7bSChristoph Hellwig return -EIO; 136930f712c9SDave Chinner } 137086685f7bSChristoph Hellwig 137186685f7bSChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 137286685f7bSChristoph Hellwig error = xfs_iread_extents(tp, ip, whichfork); 137386685f7bSChristoph Hellwig if (error) 137430f712c9SDave Chinner return error; 137530f712c9SDave Chinner } 137686685f7bSChristoph Hellwig 1377b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent_before(ip, ifp, last_block, &icur, &got)) 137886685f7bSChristoph Hellwig *last_block = 0; 137930f712c9SDave Chinner return 0; 138030f712c9SDave Chinner } 138130f712c9SDave Chinner 138230f712c9SDave Chinner int 138330f712c9SDave Chinner xfs_bmap_last_extent( 138430f712c9SDave Chinner struct xfs_trans *tp, 138530f712c9SDave Chinner struct xfs_inode *ip, 138630f712c9SDave Chinner int whichfork, 138730f712c9SDave Chinner struct xfs_bmbt_irec *rec, 138830f712c9SDave Chinner int *is_empty) 138930f712c9SDave Chinner { 139030f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 1391b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 139230f712c9SDave Chinner int error; 139330f712c9SDave Chinner 139430f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 139530f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 139630f712c9SDave Chinner if (error) 139730f712c9SDave Chinner return error; 139830f712c9SDave Chinner } 139930f712c9SDave Chinner 1400b2b1712aSChristoph Hellwig xfs_iext_last(ifp, &icur); 1401b2b1712aSChristoph Hellwig if (!xfs_iext_get_extent(ifp, &icur, rec)) 140230f712c9SDave Chinner *is_empty = 1; 1403b2b1712aSChristoph Hellwig else 140430f712c9SDave Chinner *is_empty = 0; 140530f712c9SDave Chinner return 0; 140630f712c9SDave Chinner } 140730f712c9SDave Chinner 140830f712c9SDave Chinner /* 140930f712c9SDave Chinner * Check the last inode extent to determine whether this allocation will result 141030f712c9SDave Chinner * in blocks being allocated at the end of the file. When we allocate new data 141130f712c9SDave Chinner * blocks at the end of the file which do not start at the previous data block, 141230f712c9SDave Chinner * we will try to align the new blocks at stripe unit boundaries. 141330f712c9SDave Chinner * 141430f712c9SDave Chinner * Returns 1 in bma->aeof if the file (fork) is empty as any new write will be 141530f712c9SDave Chinner * at, or past the EOF. 141630f712c9SDave Chinner */ 141730f712c9SDave Chinner STATIC int 141830f712c9SDave Chinner xfs_bmap_isaeof( 141930f712c9SDave Chinner struct xfs_bmalloca *bma, 142030f712c9SDave Chinner int whichfork) 142130f712c9SDave Chinner { 142230f712c9SDave Chinner struct xfs_bmbt_irec rec; 142330f712c9SDave Chinner int is_empty; 142430f712c9SDave Chinner int error; 142530f712c9SDave Chinner 1426749f24f3SThomas Meyer bma->aeof = false; 142730f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, bma->ip, whichfork, &rec, 142830f712c9SDave Chinner &is_empty); 142930f712c9SDave Chinner if (error) 143030f712c9SDave Chinner return error; 143130f712c9SDave Chinner 143230f712c9SDave Chinner if (is_empty) { 1433749f24f3SThomas Meyer bma->aeof = true; 143430f712c9SDave Chinner return 0; 143530f712c9SDave Chinner } 143630f712c9SDave Chinner 143730f712c9SDave Chinner /* 143830f712c9SDave Chinner * Check if we are allocation or past the last extent, or at least into 143930f712c9SDave Chinner * the last delayed allocated extent. 144030f712c9SDave Chinner */ 144130f712c9SDave Chinner bma->aeof = bma->offset >= rec.br_startoff + rec.br_blockcount || 144230f712c9SDave Chinner (bma->offset >= rec.br_startoff && 144330f712c9SDave Chinner isnullstartblock(rec.br_startblock)); 144430f712c9SDave Chinner return 0; 144530f712c9SDave Chinner } 144630f712c9SDave Chinner 144730f712c9SDave Chinner /* 144830f712c9SDave Chinner * Returns the file-relative block number of the first block past eof in 144930f712c9SDave Chinner * the file. This is not based on i_size, it is based on the extent records. 145030f712c9SDave Chinner * Returns 0 for local files, as they do not have extent records. 145130f712c9SDave Chinner */ 145230f712c9SDave Chinner int 145330f712c9SDave Chinner xfs_bmap_last_offset( 145430f712c9SDave Chinner struct xfs_inode *ip, 145530f712c9SDave Chinner xfs_fileoff_t *last_block, 145630f712c9SDave Chinner int whichfork) 145730f712c9SDave Chinner { 145830f712c9SDave Chinner struct xfs_bmbt_irec rec; 145930f712c9SDave Chinner int is_empty; 146030f712c9SDave Chinner int error; 146130f712c9SDave Chinner 146230f712c9SDave Chinner *last_block = 0; 146330f712c9SDave Chinner 146430f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_LOCAL) 146530f712c9SDave Chinner return 0; 146630f712c9SDave Chinner 146730f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE && 146830f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 14692451337dSDave Chinner return -EIO; 147030f712c9SDave Chinner 147130f712c9SDave Chinner error = xfs_bmap_last_extent(NULL, ip, whichfork, &rec, &is_empty); 147230f712c9SDave Chinner if (error || is_empty) 147330f712c9SDave Chinner return error; 147430f712c9SDave Chinner 147530f712c9SDave Chinner *last_block = rec.br_startoff + rec.br_blockcount; 147630f712c9SDave Chinner return 0; 147730f712c9SDave Chinner } 147830f712c9SDave Chinner 147930f712c9SDave Chinner /* 148030f712c9SDave Chinner * Returns whether the selected fork of the inode has exactly one 148130f712c9SDave Chinner * block or not. For the data fork we check this matches di_size, 148230f712c9SDave Chinner * implying the file's range is 0..bsize-1. 148330f712c9SDave Chinner */ 148430f712c9SDave Chinner int /* 1=>1 block, 0=>otherwise */ 148530f712c9SDave Chinner xfs_bmap_one_block( 148630f712c9SDave Chinner xfs_inode_t *ip, /* incore inode */ 148730f712c9SDave Chinner int whichfork) /* data or attr fork */ 148830f712c9SDave Chinner { 148930f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 149030f712c9SDave Chinner int rval; /* return value */ 149130f712c9SDave Chinner xfs_bmbt_irec_t s; /* internal version of extent */ 1492b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 149330f712c9SDave Chinner 149430f712c9SDave Chinner #ifndef DEBUG 149530f712c9SDave Chinner if (whichfork == XFS_DATA_FORK) 149630f712c9SDave Chinner return XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize; 149730f712c9SDave Chinner #endif /* !DEBUG */ 149830f712c9SDave Chinner if (XFS_IFORK_NEXTENTS(ip, whichfork) != 1) 149930f712c9SDave Chinner return 0; 150030f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 150130f712c9SDave Chinner return 0; 150230f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 150330f712c9SDave Chinner ASSERT(ifp->if_flags & XFS_IFEXTENTS); 1504b2b1712aSChristoph Hellwig xfs_iext_first(ifp, &icur); 1505b2b1712aSChristoph Hellwig xfs_iext_get_extent(ifp, &icur, &s); 150630f712c9SDave Chinner rval = s.br_startoff == 0 && s.br_blockcount == 1; 150730f712c9SDave Chinner if (rval && whichfork == XFS_DATA_FORK) 150830f712c9SDave Chinner ASSERT(XFS_ISIZE(ip) == ip->i_mount->m_sb.sb_blocksize); 150930f712c9SDave Chinner return rval; 151030f712c9SDave Chinner } 151130f712c9SDave Chinner 151230f712c9SDave Chinner /* 151330f712c9SDave Chinner * Extent tree manipulation functions used during allocation. 151430f712c9SDave Chinner */ 151530f712c9SDave Chinner 151630f712c9SDave Chinner /* 151730f712c9SDave Chinner * Convert a delayed allocation to a real allocation. 151830f712c9SDave Chinner */ 151930f712c9SDave Chinner STATIC int /* error */ 152030f712c9SDave Chinner xfs_bmap_add_extent_delay_real( 152160b4984fSDarrick J. Wong struct xfs_bmalloca *bma, 152260b4984fSDarrick J. Wong int whichfork) 152330f712c9SDave Chinner { 152430f712c9SDave Chinner struct xfs_bmbt_irec *new = &bma->got; 152530f712c9SDave Chinner int error; /* error return value */ 152630f712c9SDave Chinner int i; /* temp state */ 152730f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 152830f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 152930f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 153030f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 153130f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 1532060ea65bSChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 153330f712c9SDave Chinner xfs_filblks_t da_new; /* new count del alloc blocks used */ 153430f712c9SDave Chinner xfs_filblks_t da_old; /* old count del alloc blocks used */ 153530f712c9SDave Chinner xfs_filblks_t temp=0; /* value for da_new calculations */ 153630f712c9SDave Chinner int tmp_rval; /* partial logging flags */ 1537c29aad41SEric Sandeen struct xfs_mount *mp; 153860b4984fSDarrick J. Wong xfs_extnum_t *nextents; 15394dcb8869SChristoph Hellwig struct xfs_bmbt_irec old; 154030f712c9SDave Chinner 1541f1f96c49SEric Sandeen mp = bma->ip->i_mount; 15426d3eb1ecSDarrick J. Wong ifp = XFS_IFORK_PTR(bma->ip, whichfork); 154360b4984fSDarrick J. Wong ASSERT(whichfork != XFS_ATTR_FORK); 154460b4984fSDarrick J. Wong nextents = (whichfork == XFS_COW_FORK ? &bma->ip->i_cnextents : 154560b4984fSDarrick J. Wong &bma->ip->i_d.di_nextents); 154630f712c9SDave Chinner 154730f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 154830f712c9SDave Chinner ASSERT(!bma->cur || 154930f712c9SDave Chinner (bma->cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 155030f712c9SDave Chinner 1551ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 155230f712c9SDave Chinner 155330f712c9SDave Chinner #define LEFT r[0] 155430f712c9SDave Chinner #define RIGHT r[1] 155530f712c9SDave Chinner #define PREV r[2] 155630f712c9SDave Chinner 155730f712c9SDave Chinner /* 155830f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 155930f712c9SDave Chinner */ 1560b2b1712aSChristoph Hellwig xfs_iext_get_extent(ifp, &bma->icur, &PREV); 156130f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 15624dcb8869SChristoph Hellwig ASSERT(isnullstartblock(PREV.br_startblock)); 156330f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 156430f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 156530f712c9SDave Chinner 156630f712c9SDave Chinner da_old = startblockval(PREV.br_startblock); 156730f712c9SDave Chinner da_new = 0; 156830f712c9SDave Chinner 156930f712c9SDave Chinner /* 157030f712c9SDave Chinner * Set flags determining what part of the previous delayed allocation 157130f712c9SDave Chinner * extent is being replaced by a real allocation. 157230f712c9SDave Chinner */ 157330f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 157430f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 157530f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 157630f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 157730f712c9SDave Chinner 157830f712c9SDave Chinner /* 157930f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 158030f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 158130f712c9SDave Chinner */ 1582b2b1712aSChristoph Hellwig if (xfs_iext_peek_prev_extent(ifp, &bma->icur, &LEFT)) { 158330f712c9SDave Chinner state |= BMAP_LEFT_VALID; 158430f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 158530f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 158630f712c9SDave Chinner } 158730f712c9SDave Chinner 158830f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 158930f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 159030f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 159130f712c9SDave Chinner LEFT.br_state == new->br_state && 159230f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 159330f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 159430f712c9SDave Chinner 159530f712c9SDave Chinner /* 159630f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 159730f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 159830f712c9SDave Chinner * Also check for all-three-contiguous being too large. 159930f712c9SDave Chinner */ 1600b2b1712aSChristoph Hellwig if (xfs_iext_peek_next_extent(ifp, &bma->icur, &RIGHT)) { 160130f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 160230f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 160330f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 160430f712c9SDave Chinner } 160530f712c9SDave Chinner 160630f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 160730f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 160830f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 160930f712c9SDave Chinner new->br_state == RIGHT.br_state && 161030f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 161130f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 161230f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 161330f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 161430f712c9SDave Chinner BMAP_RIGHT_FILLING) || 161530f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 161630f712c9SDave Chinner <= MAXEXTLEN)) 161730f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 161830f712c9SDave Chinner 161930f712c9SDave Chinner error = 0; 162030f712c9SDave Chinner /* 162130f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 162230f712c9SDave Chinner */ 162330f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 162430f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 162530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 162630f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 162730f712c9SDave Chinner /* 162830f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 162930f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 163030f712c9SDave Chinner */ 16314dcb8869SChristoph Hellwig LEFT.br_blockcount += PREV.br_blockcount + RIGHT.br_blockcount; 163230f712c9SDave Chinner 1633c38ccf59SChristoph Hellwig xfs_iext_remove(bma->ip, &bma->icur, state); 1634c38ccf59SChristoph Hellwig xfs_iext_remove(bma->ip, &bma->icur, state); 1635b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, &bma->icur); 1636b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &LEFT); 163760b4984fSDarrick J. Wong (*nextents)--; 16380d045540SChristoph Hellwig 163930f712c9SDave Chinner if (bma->cur == NULL) 164030f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 164130f712c9SDave Chinner else { 164230f712c9SDave Chinner rval = XFS_ILOG_CORE; 1643e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, &RIGHT, &i); 164430f712c9SDave Chinner if (error) 164530f712c9SDave Chinner goto done; 1646c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 164730f712c9SDave Chinner error = xfs_btree_delete(bma->cur, &i); 164830f712c9SDave Chinner if (error) 164930f712c9SDave Chinner goto done; 1650c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 165130f712c9SDave Chinner error = xfs_btree_decrement(bma->cur, 0, &i); 165230f712c9SDave Chinner if (error) 165330f712c9SDave Chinner goto done; 1654c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 1655a67d00a5SChristoph Hellwig error = xfs_bmbt_update(bma->cur, &LEFT); 165630f712c9SDave Chinner if (error) 165730f712c9SDave Chinner goto done; 165830f712c9SDave Chinner } 165930f712c9SDave Chinner break; 166030f712c9SDave Chinner 166130f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 166230f712c9SDave Chinner /* 166330f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 166430f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 166530f712c9SDave Chinner */ 16664dcb8869SChristoph Hellwig old = LEFT; 16674dcb8869SChristoph Hellwig LEFT.br_blockcount += PREV.br_blockcount; 16680d045540SChristoph Hellwig 1669c38ccf59SChristoph Hellwig xfs_iext_remove(bma->ip, &bma->icur, state); 1670b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, &bma->icur); 1671b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &LEFT); 167230f712c9SDave Chinner 167330f712c9SDave Chinner if (bma->cur == NULL) 167430f712c9SDave Chinner rval = XFS_ILOG_DEXT; 167530f712c9SDave Chinner else { 167630f712c9SDave Chinner rval = 0; 1677e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, &old, &i); 167830f712c9SDave Chinner if (error) 167930f712c9SDave Chinner goto done; 1680c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 1681a67d00a5SChristoph Hellwig error = xfs_bmbt_update(bma->cur, &LEFT); 168230f712c9SDave Chinner if (error) 168330f712c9SDave Chinner goto done; 168430f712c9SDave Chinner } 168530f712c9SDave Chinner break; 168630f712c9SDave Chinner 168730f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 168830f712c9SDave Chinner /* 168930f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 169030f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 169130f712c9SDave Chinner */ 16924dcb8869SChristoph Hellwig PREV.br_startblock = new->br_startblock; 16934dcb8869SChristoph Hellwig PREV.br_blockcount += RIGHT.br_blockcount; 16940d045540SChristoph Hellwig 1695b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &bma->icur); 1696c38ccf59SChristoph Hellwig xfs_iext_remove(bma->ip, &bma->icur, state); 1697b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, &bma->icur); 1698b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); 169930f712c9SDave Chinner 170030f712c9SDave Chinner if (bma->cur == NULL) 170130f712c9SDave Chinner rval = XFS_ILOG_DEXT; 170230f712c9SDave Chinner else { 170330f712c9SDave Chinner rval = 0; 1704e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, &RIGHT, &i); 170530f712c9SDave Chinner if (error) 170630f712c9SDave Chinner goto done; 1707c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 1708a67d00a5SChristoph Hellwig error = xfs_bmbt_update(bma->cur, &PREV); 170930f712c9SDave Chinner if (error) 171030f712c9SDave Chinner goto done; 171130f712c9SDave Chinner } 171230f712c9SDave Chinner break; 171330f712c9SDave Chinner 171430f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 171530f712c9SDave Chinner /* 171630f712c9SDave Chinner * Filling in all of a previously delayed allocation extent. 171730f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 171830f712c9SDave Chinner * the new one. 171930f712c9SDave Chinner */ 17204dcb8869SChristoph Hellwig PREV.br_startblock = new->br_startblock; 17214dcb8869SChristoph Hellwig PREV.br_state = new->br_state; 1722b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); 172330f712c9SDave Chinner 172460b4984fSDarrick J. Wong (*nextents)++; 172530f712c9SDave Chinner if (bma->cur == NULL) 172630f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 172730f712c9SDave Chinner else { 172830f712c9SDave Chinner rval = XFS_ILOG_CORE; 1729e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, new, &i); 173030f712c9SDave Chinner if (error) 173130f712c9SDave Chinner goto done; 1732c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 173330f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 173430f712c9SDave Chinner if (error) 173530f712c9SDave Chinner goto done; 1736c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 173730f712c9SDave Chinner } 173830f712c9SDave Chinner break; 173930f712c9SDave Chinner 174030f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 174130f712c9SDave Chinner /* 174230f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 174330f712c9SDave Chinner * The left neighbor is contiguous. 174430f712c9SDave Chinner */ 17454dcb8869SChristoph Hellwig old = LEFT; 17464dcb8869SChristoph Hellwig temp = PREV.br_blockcount - new->br_blockcount; 17474dcb8869SChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 17484dcb8869SChristoph Hellwig startblockval(PREV.br_startblock)); 17494dcb8869SChristoph Hellwig 17504dcb8869SChristoph Hellwig LEFT.br_blockcount += new->br_blockcount; 175130f712c9SDave Chinner 1752bf99971cSChristoph Hellwig PREV.br_blockcount = temp; 17534dcb8869SChristoph Hellwig PREV.br_startoff += new->br_blockcount; 17544dcb8869SChristoph Hellwig PREV.br_startblock = nullstartblock(da_new); 17550d045540SChristoph Hellwig 1756b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); 1757b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, &bma->icur); 1758b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &LEFT); 17594dcb8869SChristoph Hellwig 176030f712c9SDave Chinner if (bma->cur == NULL) 176130f712c9SDave Chinner rval = XFS_ILOG_DEXT; 176230f712c9SDave Chinner else { 176330f712c9SDave Chinner rval = 0; 1764e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, &old, &i); 176530f712c9SDave Chinner if (error) 176630f712c9SDave Chinner goto done; 1767c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 1768a67d00a5SChristoph Hellwig error = xfs_bmbt_update(bma->cur, &LEFT); 176930f712c9SDave Chinner if (error) 177030f712c9SDave Chinner goto done; 177130f712c9SDave Chinner } 177230f712c9SDave Chinner break; 177330f712c9SDave Chinner 177430f712c9SDave Chinner case BMAP_LEFT_FILLING: 177530f712c9SDave Chinner /* 177630f712c9SDave Chinner * Filling in the first part of a previous delayed allocation. 177730f712c9SDave Chinner * The left neighbor is not contiguous. 177830f712c9SDave Chinner */ 1779b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, new); 178060b4984fSDarrick J. Wong (*nextents)++; 178130f712c9SDave Chinner if (bma->cur == NULL) 178230f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 178330f712c9SDave Chinner else { 178430f712c9SDave Chinner rval = XFS_ILOG_CORE; 1785e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, new, &i); 178630f712c9SDave Chinner if (error) 178730f712c9SDave Chinner goto done; 1788c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 178930f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 179030f712c9SDave Chinner if (error) 179130f712c9SDave Chinner goto done; 1792c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 179330f712c9SDave Chinner } 179430f712c9SDave Chinner 17956d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 179630f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 179781ba8f3eSBrian Foster bma->firstblock, &bma->cur, 1, 179881ba8f3eSBrian Foster &tmp_rval, whichfork); 179930f712c9SDave Chinner rval |= tmp_rval; 180030f712c9SDave Chinner if (error) 180130f712c9SDave Chinner goto done; 180230f712c9SDave Chinner } 18034dcb8869SChristoph Hellwig 18044dcb8869SChristoph Hellwig temp = PREV.br_blockcount - new->br_blockcount; 180530f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 180630f712c9SDave Chinner startblockval(PREV.br_startblock) - 180730f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 18084dcb8869SChristoph Hellwig 18094dcb8869SChristoph Hellwig PREV.br_startoff = new_endoff; 18104dcb8869SChristoph Hellwig PREV.br_blockcount = temp; 18114dcb8869SChristoph Hellwig PREV.br_startblock = nullstartblock(da_new); 1812b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &bma->icur); 18130254c2f2SChristoph Hellwig xfs_iext_insert(bma->ip, &bma->icur, &PREV, state); 1814b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, &bma->icur); 181530f712c9SDave Chinner break; 181630f712c9SDave Chinner 181730f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 181830f712c9SDave Chinner /* 181930f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 182030f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 182130f712c9SDave Chinner */ 18224dcb8869SChristoph Hellwig old = RIGHT; 18234dcb8869SChristoph Hellwig RIGHT.br_startoff = new->br_startoff; 18244dcb8869SChristoph Hellwig RIGHT.br_startblock = new->br_startblock; 18254dcb8869SChristoph Hellwig RIGHT.br_blockcount += new->br_blockcount; 18264dcb8869SChristoph Hellwig 182730f712c9SDave Chinner if (bma->cur == NULL) 182830f712c9SDave Chinner rval = XFS_ILOG_DEXT; 182930f712c9SDave Chinner else { 183030f712c9SDave Chinner rval = 0; 1831e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, &old, &i); 183230f712c9SDave Chinner if (error) 183330f712c9SDave Chinner goto done; 1834c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 1835a67d00a5SChristoph Hellwig error = xfs_bmbt_update(bma->cur, &RIGHT); 183630f712c9SDave Chinner if (error) 183730f712c9SDave Chinner goto done; 183830f712c9SDave Chinner } 183930f712c9SDave Chinner 18404dcb8869SChristoph Hellwig temp = PREV.br_blockcount - new->br_blockcount; 184130f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 184230f712c9SDave Chinner startblockval(PREV.br_startblock)); 18434dcb8869SChristoph Hellwig 18444dcb8869SChristoph Hellwig PREV.br_blockcount = temp; 18454dcb8869SChristoph Hellwig PREV.br_startblock = nullstartblock(da_new); 184630f712c9SDave Chinner 1847b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); 1848b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &bma->icur); 1849b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &RIGHT); 185030f712c9SDave Chinner break; 185130f712c9SDave Chinner 185230f712c9SDave Chinner case BMAP_RIGHT_FILLING: 185330f712c9SDave Chinner /* 185430f712c9SDave Chinner * Filling in the last part of a previous delayed allocation. 185530f712c9SDave Chinner * The right neighbor is not contiguous. 185630f712c9SDave Chinner */ 1857b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, new); 185860b4984fSDarrick J. Wong (*nextents)++; 185930f712c9SDave Chinner if (bma->cur == NULL) 186030f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 186130f712c9SDave Chinner else { 186230f712c9SDave Chinner rval = XFS_ILOG_CORE; 1863e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, new, &i); 186430f712c9SDave Chinner if (error) 186530f712c9SDave Chinner goto done; 1866c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 186730f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 186830f712c9SDave Chinner if (error) 186930f712c9SDave Chinner goto done; 1870c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 187130f712c9SDave Chinner } 187230f712c9SDave Chinner 18736d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 187430f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 187581ba8f3eSBrian Foster bma->firstblock, &bma->cur, 1, &tmp_rval, 187681ba8f3eSBrian Foster whichfork); 187730f712c9SDave Chinner rval |= tmp_rval; 187830f712c9SDave Chinner if (error) 187930f712c9SDave Chinner goto done; 188030f712c9SDave Chinner } 18814dcb8869SChristoph Hellwig 18824dcb8869SChristoph Hellwig temp = PREV.br_blockcount - new->br_blockcount; 188330f712c9SDave Chinner da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(bma->ip, temp), 188430f712c9SDave Chinner startblockval(PREV.br_startblock) - 188530f712c9SDave Chinner (bma->cur ? bma->cur->bc_private.b.allocated : 0)); 18864dcb8869SChristoph Hellwig 18874dcb8869SChristoph Hellwig PREV.br_startblock = nullstartblock(da_new); 18884dcb8869SChristoph Hellwig PREV.br_blockcount = temp; 18890254c2f2SChristoph Hellwig xfs_iext_insert(bma->ip, &bma->icur, &PREV, state); 1890b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &bma->icur); 189130f712c9SDave Chinner break; 189230f712c9SDave Chinner 189330f712c9SDave Chinner case 0: 189430f712c9SDave Chinner /* 189530f712c9SDave Chinner * Filling in the middle part of a previous delayed allocation. 189630f712c9SDave Chinner * Contiguity is impossible here. 189730f712c9SDave Chinner * This case is avoided almost all the time. 189830f712c9SDave Chinner * 189930f712c9SDave Chinner * We start with a delayed allocation: 190030f712c9SDave Chinner * 190130f712c9SDave Chinner * +ddddddddddddddddddddddddddddddddddddddddddddddddddddddd+ 190230f712c9SDave Chinner * PREV @ idx 190330f712c9SDave Chinner * 190430f712c9SDave Chinner * and we are allocating: 190530f712c9SDave Chinner * +rrrrrrrrrrrrrrrrr+ 190630f712c9SDave Chinner * new 190730f712c9SDave Chinner * 190830f712c9SDave Chinner * and we set it up for insertion as: 190930f712c9SDave Chinner * +ddddddddddddddddddd+rrrrrrrrrrrrrrrrr+ddddddddddddddddd+ 191030f712c9SDave Chinner * new 191130f712c9SDave Chinner * PREV @ idx LEFT RIGHT 191230f712c9SDave Chinner * inserted at idx + 1 191330f712c9SDave Chinner */ 19144dcb8869SChristoph Hellwig old = PREV; 19154dcb8869SChristoph Hellwig 19164dcb8869SChristoph Hellwig /* LEFT is the new middle */ 191730f712c9SDave Chinner LEFT = *new; 19184dcb8869SChristoph Hellwig 19194dcb8869SChristoph Hellwig /* RIGHT is the new right */ 192030f712c9SDave Chinner RIGHT.br_state = PREV.br_state; 192130f712c9SDave Chinner RIGHT.br_startoff = new_endoff; 19224dcb8869SChristoph Hellwig RIGHT.br_blockcount = 19234dcb8869SChristoph Hellwig PREV.br_startoff + PREV.br_blockcount - new_endoff; 19244dcb8869SChristoph Hellwig RIGHT.br_startblock = 19254dcb8869SChristoph Hellwig nullstartblock(xfs_bmap_worst_indlen(bma->ip, 19264dcb8869SChristoph Hellwig RIGHT.br_blockcount)); 19274dcb8869SChristoph Hellwig 19284dcb8869SChristoph Hellwig /* truncate PREV */ 19294dcb8869SChristoph Hellwig PREV.br_blockcount = new->br_startoff - PREV.br_startoff; 19304dcb8869SChristoph Hellwig PREV.br_startblock = 19314dcb8869SChristoph Hellwig nullstartblock(xfs_bmap_worst_indlen(bma->ip, 19324dcb8869SChristoph Hellwig PREV.br_blockcount)); 1933b2b1712aSChristoph Hellwig xfs_iext_update_extent(bma->ip, state, &bma->icur, &PREV); 19344dcb8869SChristoph Hellwig 1935b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &bma->icur); 19360254c2f2SChristoph Hellwig xfs_iext_insert(bma->ip, &bma->icur, &RIGHT, state); 19370254c2f2SChristoph Hellwig xfs_iext_insert(bma->ip, &bma->icur, &LEFT, state); 193860b4984fSDarrick J. Wong (*nextents)++; 19394dcb8869SChristoph Hellwig 194030f712c9SDave Chinner if (bma->cur == NULL) 194130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 194230f712c9SDave Chinner else { 194330f712c9SDave Chinner rval = XFS_ILOG_CORE; 1944e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(bma->cur, new, &i); 194530f712c9SDave Chinner if (error) 194630f712c9SDave Chinner goto done; 1947c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 194830f712c9SDave Chinner error = xfs_btree_insert(bma->cur, &i); 194930f712c9SDave Chinner if (error) 195030f712c9SDave Chinner goto done; 1951c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 195230f712c9SDave Chinner } 195330f712c9SDave Chinner 19546d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 195530f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 195681ba8f3eSBrian Foster bma->firstblock, &bma->cur, 1, 195781ba8f3eSBrian Foster &tmp_rval, whichfork); 195830f712c9SDave Chinner rval |= tmp_rval; 195930f712c9SDave Chinner if (error) 196030f712c9SDave Chinner goto done; 196130f712c9SDave Chinner } 19624dcb8869SChristoph Hellwig 19634dcb8869SChristoph Hellwig da_new = startblockval(PREV.br_startblock) + 19644dcb8869SChristoph Hellwig startblockval(RIGHT.br_startblock); 196530f712c9SDave Chinner break; 196630f712c9SDave Chinner 196730f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 196830f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 196930f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 197030f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 197130f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 197230f712c9SDave Chinner case BMAP_LEFT_CONTIG: 197330f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 197430f712c9SDave Chinner /* 197530f712c9SDave Chinner * These cases are all impossible. 197630f712c9SDave Chinner */ 197730f712c9SDave Chinner ASSERT(0); 197830f712c9SDave Chinner } 197930f712c9SDave Chinner 198095eb308cSDarrick J. Wong /* add reverse mapping unless caller opted out */ 198195eb308cSDarrick J. Wong if (!(bma->flags & XFS_BMAPI_NORMAP)) { 19823e3673e3SBrian Foster error = xfs_rmap_map_extent(mp, bma->tp->t_dfops, bma->ip, 198395eb308cSDarrick J. Wong whichfork, new); 19849c194644SDarrick J. Wong if (error) 19859c194644SDarrick J. Wong goto done; 198695eb308cSDarrick J. Wong } 19879c194644SDarrick J. Wong 198830f712c9SDave Chinner /* convert to a btree if necessary */ 19896d3eb1ecSDarrick J. Wong if (xfs_bmap_needs_btree(bma->ip, whichfork)) { 199030f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 199130f712c9SDave Chinner 199230f712c9SDave Chinner ASSERT(bma->cur == NULL); 199330f712c9SDave Chinner error = xfs_bmap_extents_to_btree(bma->tp, bma->ip, 199481ba8f3eSBrian Foster bma->firstblock, &bma->cur, da_old > 0, 199581ba8f3eSBrian Foster &tmp_logflags, whichfork); 199630f712c9SDave Chinner bma->logflags |= tmp_logflags; 199730f712c9SDave Chinner if (error) 199830f712c9SDave Chinner goto done; 199930f712c9SDave Chinner } 200030f712c9SDave Chinner 2001ca1862b0SChristoph Hellwig if (bma->cur) { 2002ca1862b0SChristoph Hellwig da_new += bma->cur->bc_private.b.allocated; 2003ca1862b0SChristoph Hellwig bma->cur->bc_private.b.allocated = 0; 200430f712c9SDave Chinner } 200530f712c9SDave Chinner 2006ca1862b0SChristoph Hellwig /* adjust for changes in reserved delayed indirect blocks */ 2007ca1862b0SChristoph Hellwig if (da_new != da_old) { 2008ca1862b0SChristoph Hellwig ASSERT(state == 0 || da_new < da_old); 2009ca1862b0SChristoph Hellwig error = xfs_mod_fdblocks(mp, (int64_t)(da_old - da_new), 2010ca1862b0SChristoph Hellwig false); 2011ca1862b0SChristoph Hellwig } 201230f712c9SDave Chinner 20136d3eb1ecSDarrick J. Wong xfs_bmap_check_leaf_extents(bma->cur, bma->ip, whichfork); 201430f712c9SDave Chinner done: 201560b4984fSDarrick J. Wong if (whichfork != XFS_COW_FORK) 201630f712c9SDave Chinner bma->logflags |= rval; 201730f712c9SDave Chinner return error; 201830f712c9SDave Chinner #undef LEFT 201930f712c9SDave Chinner #undef RIGHT 202030f712c9SDave Chinner #undef PREV 202130f712c9SDave Chinner } 202230f712c9SDave Chinner 202330f712c9SDave Chinner /* 202430f712c9SDave Chinner * Convert an unwritten allocation to a real allocation or vice versa. 202530f712c9SDave Chinner */ 202630f712c9SDave Chinner STATIC int /* error */ 202730f712c9SDave Chinner xfs_bmap_add_extent_unwritten_real( 202830f712c9SDave Chinner struct xfs_trans *tp, 202930f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 203005a630d7SDarrick J. Wong int whichfork, 2031b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 203230f712c9SDave Chinner xfs_btree_cur_t **curp, /* if *curp is null, not a btree */ 203330f712c9SDave Chinner xfs_bmbt_irec_t *new, /* new data to add to file extents */ 203430f712c9SDave Chinner xfs_fsblock_t *first, /* pointer to firstblock variable */ 203530f712c9SDave Chinner int *logflagsp) /* inode logging flags */ 203630f712c9SDave Chinner { 203730f712c9SDave Chinner xfs_btree_cur_t *cur; /* btree cursor */ 203830f712c9SDave Chinner int error; /* error return value */ 203930f712c9SDave Chinner int i; /* temp state */ 204030f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 204130f712c9SDave Chinner xfs_fileoff_t new_endoff; /* end offset of new entry */ 204230f712c9SDave Chinner xfs_bmbt_irec_t r[3]; /* neighbor extent entries */ 204330f712c9SDave Chinner /* left is 0, right is 1, prev is 2 */ 204430f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 2045060ea65bSChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 204605a630d7SDarrick J. Wong struct xfs_mount *mp = ip->i_mount; 204779fa6143SChristoph Hellwig struct xfs_bmbt_irec old; 204881ba8f3eSBrian Foster struct xfs_defer_ops *dfops = tp ? tp->t_dfops : NULL; 204930f712c9SDave Chinner 205030f712c9SDave Chinner *logflagsp = 0; 205130f712c9SDave Chinner 205230f712c9SDave Chinner cur = *curp; 205305a630d7SDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 205430f712c9SDave Chinner 205530f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 205630f712c9SDave Chinner 2057ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 205830f712c9SDave Chinner 205930f712c9SDave Chinner #define LEFT r[0] 206030f712c9SDave Chinner #define RIGHT r[1] 206130f712c9SDave Chinner #define PREV r[2] 206230f712c9SDave Chinner 206330f712c9SDave Chinner /* 206430f712c9SDave Chinner * Set up a bunch of variables to make the tests simpler. 206530f712c9SDave Chinner */ 206630f712c9SDave Chinner error = 0; 2067b2b1712aSChristoph Hellwig xfs_iext_get_extent(ifp, icur, &PREV); 206879fa6143SChristoph Hellwig ASSERT(new->br_state != PREV.br_state); 206930f712c9SDave Chinner new_endoff = new->br_startoff + new->br_blockcount; 207030f712c9SDave Chinner ASSERT(PREV.br_startoff <= new->br_startoff); 207130f712c9SDave Chinner ASSERT(PREV.br_startoff + PREV.br_blockcount >= new_endoff); 207230f712c9SDave Chinner 207330f712c9SDave Chinner /* 207430f712c9SDave Chinner * Set flags determining what part of the previous oldext allocation 207530f712c9SDave Chinner * extent is being replaced by a newext allocation. 207630f712c9SDave Chinner */ 207730f712c9SDave Chinner if (PREV.br_startoff == new->br_startoff) 207830f712c9SDave Chinner state |= BMAP_LEFT_FILLING; 207930f712c9SDave Chinner if (PREV.br_startoff + PREV.br_blockcount == new_endoff) 208030f712c9SDave Chinner state |= BMAP_RIGHT_FILLING; 208130f712c9SDave Chinner 208230f712c9SDave Chinner /* 208330f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 208430f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 208530f712c9SDave Chinner */ 2086b2b1712aSChristoph Hellwig if (xfs_iext_peek_prev_extent(ifp, icur, &LEFT)) { 208730f712c9SDave Chinner state |= BMAP_LEFT_VALID; 208830f712c9SDave Chinner if (isnullstartblock(LEFT.br_startblock)) 208930f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 209030f712c9SDave Chinner } 209130f712c9SDave Chinner 209230f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 209330f712c9SDave Chinner LEFT.br_startoff + LEFT.br_blockcount == new->br_startoff && 209430f712c9SDave Chinner LEFT.br_startblock + LEFT.br_blockcount == new->br_startblock && 209579fa6143SChristoph Hellwig LEFT.br_state == new->br_state && 209630f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount <= MAXEXTLEN) 209730f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 209830f712c9SDave Chinner 209930f712c9SDave Chinner /* 210030f712c9SDave Chinner * Check and set flags if this segment has a right neighbor. 210130f712c9SDave Chinner * Don't set contiguous if the combined extent would be too large. 210230f712c9SDave Chinner * Also check for all-three-contiguous being too large. 210330f712c9SDave Chinner */ 2104b2b1712aSChristoph Hellwig if (xfs_iext_peek_next_extent(ifp, icur, &RIGHT)) { 210530f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 210630f712c9SDave Chinner if (isnullstartblock(RIGHT.br_startblock)) 210730f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 210830f712c9SDave Chinner } 210930f712c9SDave Chinner 211030f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 211130f712c9SDave Chinner new_endoff == RIGHT.br_startoff && 211230f712c9SDave Chinner new->br_startblock + new->br_blockcount == RIGHT.br_startblock && 211379fa6143SChristoph Hellwig new->br_state == RIGHT.br_state && 211430f712c9SDave Chinner new->br_blockcount + RIGHT.br_blockcount <= MAXEXTLEN && 211530f712c9SDave Chinner ((state & (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 211630f712c9SDave Chinner BMAP_RIGHT_FILLING)) != 211730f712c9SDave Chinner (BMAP_LEFT_CONTIG | BMAP_LEFT_FILLING | 211830f712c9SDave Chinner BMAP_RIGHT_FILLING) || 211930f712c9SDave Chinner LEFT.br_blockcount + new->br_blockcount + RIGHT.br_blockcount 212030f712c9SDave Chinner <= MAXEXTLEN)) 212130f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 212230f712c9SDave Chinner 212330f712c9SDave Chinner /* 212430f712c9SDave Chinner * Switch out based on the FILLING and CONTIG state bits. 212530f712c9SDave Chinner */ 212630f712c9SDave Chinner switch (state & (BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 212730f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG)) { 212830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | 212930f712c9SDave Chinner BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 213030f712c9SDave Chinner /* 213130f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 213230f712c9SDave Chinner * The left and right neighbors are both contiguous with new. 213330f712c9SDave Chinner */ 213479fa6143SChristoph Hellwig LEFT.br_blockcount += PREV.br_blockcount + RIGHT.br_blockcount; 213530f712c9SDave Chinner 2136c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 2137c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 2138b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2139b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &LEFT); 214005a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 214105a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) - 2); 214230f712c9SDave Chinner if (cur == NULL) 214330f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 214430f712c9SDave Chinner else { 214530f712c9SDave Chinner rval = XFS_ILOG_CORE; 2146e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &RIGHT, &i); 2147e16cf9b0SChristoph Hellwig if (error) 214830f712c9SDave Chinner goto done; 2149c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 215030f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 215130f712c9SDave Chinner goto done; 2152c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 215330f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 215430f712c9SDave Chinner goto done; 2155c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 215630f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 215730f712c9SDave Chinner goto done; 2158c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 215930f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 216030f712c9SDave Chinner goto done; 2161c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2162a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &LEFT); 216379fa6143SChristoph Hellwig if (error) 216430f712c9SDave Chinner goto done; 216530f712c9SDave Chinner } 216630f712c9SDave Chinner break; 216730f712c9SDave Chinner 216830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 216930f712c9SDave Chinner /* 217030f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 217130f712c9SDave Chinner * The left neighbor is contiguous, the right is not. 217230f712c9SDave Chinner */ 217379fa6143SChristoph Hellwig LEFT.br_blockcount += PREV.br_blockcount; 217430f712c9SDave Chinner 2175c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 2176b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2177b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &LEFT); 217805a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 217905a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 218030f712c9SDave Chinner if (cur == NULL) 218130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 218230f712c9SDave Chinner else { 218330f712c9SDave Chinner rval = XFS_ILOG_CORE; 2184e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &PREV, &i); 2185e16cf9b0SChristoph Hellwig if (error) 218630f712c9SDave Chinner goto done; 2187c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 218830f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 218930f712c9SDave Chinner goto done; 2190c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 219130f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 219230f712c9SDave Chinner goto done; 2193c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2194a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &LEFT); 219579fa6143SChristoph Hellwig if (error) 219630f712c9SDave Chinner goto done; 219730f712c9SDave Chinner } 219830f712c9SDave Chinner break; 219930f712c9SDave Chinner 220030f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 220130f712c9SDave Chinner /* 220230f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 220330f712c9SDave Chinner * The right neighbor is contiguous, the left is not. 220430f712c9SDave Chinner */ 220579fa6143SChristoph Hellwig PREV.br_blockcount += RIGHT.br_blockcount; 220679fa6143SChristoph Hellwig PREV.br_state = new->br_state; 2207a6818477SChristoph Hellwig 2208b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 2209c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 2210b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2211b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 221279fa6143SChristoph Hellwig 221305a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 221405a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 221530f712c9SDave Chinner if (cur == NULL) 221630f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 221730f712c9SDave Chinner else { 221830f712c9SDave Chinner rval = XFS_ILOG_CORE; 2219e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &RIGHT, &i); 2220e16cf9b0SChristoph Hellwig if (error) 222130f712c9SDave Chinner goto done; 2222c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 222330f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 222430f712c9SDave Chinner goto done; 2225c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 222630f712c9SDave Chinner if ((error = xfs_btree_decrement(cur, 0, &i))) 222730f712c9SDave Chinner goto done; 2228c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2229a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &PREV); 223079fa6143SChristoph Hellwig if (error) 223130f712c9SDave Chinner goto done; 223230f712c9SDave Chinner } 223330f712c9SDave Chinner break; 223430f712c9SDave Chinner 223530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 223630f712c9SDave Chinner /* 223730f712c9SDave Chinner * Setting all of a previous oldext extent to newext. 223830f712c9SDave Chinner * Neither the left nor right neighbors are contiguous with 223930f712c9SDave Chinner * the new one. 224030f712c9SDave Chinner */ 224179fa6143SChristoph Hellwig PREV.br_state = new->br_state; 2242b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 224330f712c9SDave Chinner 224430f712c9SDave Chinner if (cur == NULL) 224530f712c9SDave Chinner rval = XFS_ILOG_DEXT; 224630f712c9SDave Chinner else { 224730f712c9SDave Chinner rval = 0; 2248e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, new, &i); 2249e16cf9b0SChristoph Hellwig if (error) 225030f712c9SDave Chinner goto done; 2251c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2252a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &PREV); 225379fa6143SChristoph Hellwig if (error) 225430f712c9SDave Chinner goto done; 225530f712c9SDave Chinner } 225630f712c9SDave Chinner break; 225730f712c9SDave Chinner 225830f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG: 225930f712c9SDave Chinner /* 226030f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 226130f712c9SDave Chinner * The left neighbor is contiguous. 226230f712c9SDave Chinner */ 226379fa6143SChristoph Hellwig LEFT.br_blockcount += new->br_blockcount; 226430f712c9SDave Chinner 226579fa6143SChristoph Hellwig old = PREV; 226679fa6143SChristoph Hellwig PREV.br_startoff += new->br_blockcount; 226779fa6143SChristoph Hellwig PREV.br_startblock += new->br_blockcount; 226879fa6143SChristoph Hellwig PREV.br_blockcount -= new->br_blockcount; 226930f712c9SDave Chinner 2270b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 2271b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2272b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &LEFT); 227330f712c9SDave Chinner 227430f712c9SDave Chinner if (cur == NULL) 227530f712c9SDave Chinner rval = XFS_ILOG_DEXT; 227630f712c9SDave Chinner else { 227730f712c9SDave Chinner rval = 0; 2278e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 227979fa6143SChristoph Hellwig if (error) 228030f712c9SDave Chinner goto done; 2281c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2282a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &PREV); 228379fa6143SChristoph Hellwig if (error) 228430f712c9SDave Chinner goto done; 228579fa6143SChristoph Hellwig error = xfs_btree_decrement(cur, 0, &i); 228679fa6143SChristoph Hellwig if (error) 228730f712c9SDave Chinner goto done; 2288a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &LEFT); 228930f712c9SDave Chinner if (error) 229030f712c9SDave Chinner goto done; 229130f712c9SDave Chinner } 229230f712c9SDave Chinner break; 229330f712c9SDave Chinner 229430f712c9SDave Chinner case BMAP_LEFT_FILLING: 229530f712c9SDave Chinner /* 229630f712c9SDave Chinner * Setting the first part of a previous oldext extent to newext. 229730f712c9SDave Chinner * The left neighbor is not contiguous. 229830f712c9SDave Chinner */ 229979fa6143SChristoph Hellwig old = PREV; 230079fa6143SChristoph Hellwig PREV.br_startoff += new->br_blockcount; 230179fa6143SChristoph Hellwig PREV.br_startblock += new->br_blockcount; 230279fa6143SChristoph Hellwig PREV.br_blockcount -= new->br_blockcount; 230330f712c9SDave Chinner 2304b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 23050254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, new, state); 230605a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 230705a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 230830f712c9SDave Chinner if (cur == NULL) 230930f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 231030f712c9SDave Chinner else { 231130f712c9SDave Chinner rval = XFS_ILOG_CORE; 2312e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 231379fa6143SChristoph Hellwig if (error) 231430f712c9SDave Chinner goto done; 2315c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2316a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &PREV); 231779fa6143SChristoph Hellwig if (error) 231830f712c9SDave Chinner goto done; 231930f712c9SDave Chinner cur->bc_rec.b = *new; 232030f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 232130f712c9SDave Chinner goto done; 2322c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 232330f712c9SDave Chinner } 232430f712c9SDave Chinner break; 232530f712c9SDave Chinner 232630f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_RIGHT_CONTIG: 232730f712c9SDave Chinner /* 232830f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 232930f712c9SDave Chinner * The right neighbor is contiguous with the new allocation. 233030f712c9SDave Chinner */ 233179fa6143SChristoph Hellwig old = PREV; 233279fa6143SChristoph Hellwig PREV.br_blockcount -= new->br_blockcount; 233330f712c9SDave Chinner 233479fa6143SChristoph Hellwig RIGHT.br_startoff = new->br_startoff; 233579fa6143SChristoph Hellwig RIGHT.br_startblock = new->br_startblock; 233679fa6143SChristoph Hellwig RIGHT.br_blockcount += new->br_blockcount; 2337a6818477SChristoph Hellwig 2338b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 2339b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 2340b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &RIGHT); 234130f712c9SDave Chinner 234230f712c9SDave Chinner if (cur == NULL) 234330f712c9SDave Chinner rval = XFS_ILOG_DEXT; 234430f712c9SDave Chinner else { 234530f712c9SDave Chinner rval = 0; 2346e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 234779fa6143SChristoph Hellwig if (error) 234830f712c9SDave Chinner goto done; 2349c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2350a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &PREV); 235179fa6143SChristoph Hellwig if (error) 235230f712c9SDave Chinner goto done; 235379fa6143SChristoph Hellwig error = xfs_btree_increment(cur, 0, &i); 235479fa6143SChristoph Hellwig if (error) 235530f712c9SDave Chinner goto done; 2356a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &RIGHT); 235779fa6143SChristoph Hellwig if (error) 235830f712c9SDave Chinner goto done; 235930f712c9SDave Chinner } 236030f712c9SDave Chinner break; 236130f712c9SDave Chinner 236230f712c9SDave Chinner case BMAP_RIGHT_FILLING: 236330f712c9SDave Chinner /* 236430f712c9SDave Chinner * Setting the last part of a previous oldext extent to newext. 236530f712c9SDave Chinner * The right neighbor is not contiguous. 236630f712c9SDave Chinner */ 236779fa6143SChristoph Hellwig old = PREV; 236879fa6143SChristoph Hellwig PREV.br_blockcount -= new->br_blockcount; 236930f712c9SDave Chinner 2370b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 2371b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 23720254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, new, state); 237330f712c9SDave Chinner 237405a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 237505a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 237630f712c9SDave Chinner if (cur == NULL) 237730f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 237830f712c9SDave Chinner else { 237930f712c9SDave Chinner rval = XFS_ILOG_CORE; 2380e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 238179fa6143SChristoph Hellwig if (error) 238230f712c9SDave Chinner goto done; 2383c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2384a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &PREV); 238579fa6143SChristoph Hellwig if (error) 238630f712c9SDave Chinner goto done; 2387e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, new, &i); 2388e16cf9b0SChristoph Hellwig if (error) 238930f712c9SDave Chinner goto done; 2390c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 239130f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 239230f712c9SDave Chinner goto done; 2393c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 239430f712c9SDave Chinner } 239530f712c9SDave Chinner break; 239630f712c9SDave Chinner 239730f712c9SDave Chinner case 0: 239830f712c9SDave Chinner /* 239930f712c9SDave Chinner * Setting the middle part of a previous oldext extent to 240030f712c9SDave Chinner * newext. Contiguity is impossible here. 240130f712c9SDave Chinner * One extent becomes three extents. 240230f712c9SDave Chinner */ 240379fa6143SChristoph Hellwig old = PREV; 240479fa6143SChristoph Hellwig PREV.br_blockcount = new->br_startoff - PREV.br_startoff; 240530f712c9SDave Chinner 240630f712c9SDave Chinner r[0] = *new; 240730f712c9SDave Chinner r[1].br_startoff = new_endoff; 240830f712c9SDave Chinner r[1].br_blockcount = 240979fa6143SChristoph Hellwig old.br_startoff + old.br_blockcount - new_endoff; 241030f712c9SDave Chinner r[1].br_startblock = new->br_startblock + new->br_blockcount; 241179fa6143SChristoph Hellwig r[1].br_state = PREV.br_state; 241230f712c9SDave Chinner 2413b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &PREV); 2414b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 24150254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, &r[1], state); 24160254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, &r[0], state); 241730f712c9SDave Chinner 241805a630d7SDarrick J. Wong XFS_IFORK_NEXT_SET(ip, whichfork, 241905a630d7SDarrick J. Wong XFS_IFORK_NEXTENTS(ip, whichfork) + 2); 242030f712c9SDave Chinner if (cur == NULL) 242130f712c9SDave Chinner rval = XFS_ILOG_CORE | XFS_ILOG_DEXT; 242230f712c9SDave Chinner else { 242330f712c9SDave Chinner rval = XFS_ILOG_CORE; 2424e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 242579fa6143SChristoph Hellwig if (error) 242630f712c9SDave Chinner goto done; 2427c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 242830f712c9SDave Chinner /* new right extent - oldext */ 2429a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &r[1]); 2430a67d00a5SChristoph Hellwig if (error) 243130f712c9SDave Chinner goto done; 243230f712c9SDave Chinner /* new left extent - oldext */ 243330f712c9SDave Chinner cur->bc_rec.b = PREV; 243430f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 243530f712c9SDave Chinner goto done; 2436c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 243730f712c9SDave Chinner /* 243830f712c9SDave Chinner * Reset the cursor to the position of the new extent 243930f712c9SDave Chinner * we are about to insert as we can't trust it after 244030f712c9SDave Chinner * the previous insert. 244130f712c9SDave Chinner */ 2442e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, new, &i); 2443e16cf9b0SChristoph Hellwig if (error) 244430f712c9SDave Chinner goto done; 2445c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 244630f712c9SDave Chinner /* new middle extent - newext */ 244730f712c9SDave Chinner if ((error = xfs_btree_insert(cur, &i))) 244830f712c9SDave Chinner goto done; 2449c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 245030f712c9SDave Chinner } 245130f712c9SDave Chinner break; 245230f712c9SDave Chinner 245330f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 245430f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 245530f712c9SDave Chinner case BMAP_LEFT_FILLING | BMAP_RIGHT_CONTIG: 245630f712c9SDave Chinner case BMAP_RIGHT_FILLING | BMAP_LEFT_CONTIG: 245730f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 245830f712c9SDave Chinner case BMAP_LEFT_CONTIG: 245930f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 246030f712c9SDave Chinner /* 246130f712c9SDave Chinner * These cases are all impossible. 246230f712c9SDave Chinner */ 246330f712c9SDave Chinner ASSERT(0); 246430f712c9SDave Chinner } 246530f712c9SDave Chinner 24669c194644SDarrick J. Wong /* update reverse mappings */ 246705a630d7SDarrick J. Wong error = xfs_rmap_convert_extent(mp, dfops, ip, whichfork, new); 24689c194644SDarrick J. Wong if (error) 24699c194644SDarrick J. Wong goto done; 24709c194644SDarrick J. Wong 247130f712c9SDave Chinner /* convert to a btree if necessary */ 247205a630d7SDarrick J. Wong if (xfs_bmap_needs_btree(ip, whichfork)) { 247330f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 247430f712c9SDave Chinner 247530f712c9SDave Chinner ASSERT(cur == NULL); 247681ba8f3eSBrian Foster error = xfs_bmap_extents_to_btree(tp, ip, first, &cur, 0, 247781ba8f3eSBrian Foster &tmp_logflags, whichfork); 247830f712c9SDave Chinner *logflagsp |= tmp_logflags; 247930f712c9SDave Chinner if (error) 248030f712c9SDave Chinner goto done; 248130f712c9SDave Chinner } 248230f712c9SDave Chinner 248330f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 248430f712c9SDave Chinner if (cur) { 248530f712c9SDave Chinner cur->bc_private.b.allocated = 0; 248630f712c9SDave Chinner *curp = cur; 248730f712c9SDave Chinner } 248830f712c9SDave Chinner 248905a630d7SDarrick J. Wong xfs_bmap_check_leaf_extents(*curp, ip, whichfork); 249030f712c9SDave Chinner done: 249130f712c9SDave Chinner *logflagsp |= rval; 249230f712c9SDave Chinner return error; 249330f712c9SDave Chinner #undef LEFT 249430f712c9SDave Chinner #undef RIGHT 249530f712c9SDave Chinner #undef PREV 249630f712c9SDave Chinner } 249730f712c9SDave Chinner 249830f712c9SDave Chinner /* 249930f712c9SDave Chinner * Convert a hole to a delayed allocation. 250030f712c9SDave Chinner */ 250130f712c9SDave Chinner STATIC void 250230f712c9SDave Chinner xfs_bmap_add_extent_hole_delay( 250330f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 2504be51f811SDarrick J. Wong int whichfork, 2505b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 250630f712c9SDave Chinner xfs_bmbt_irec_t *new) /* new data to add to file extents */ 250730f712c9SDave Chinner { 250830f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 250930f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 251030f712c9SDave Chinner xfs_filblks_t newlen=0; /* new indirect size */ 251130f712c9SDave Chinner xfs_filblks_t oldlen=0; /* old indirect size */ 251230f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 2513060ea65bSChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 25143ffc18ecSChristoph Hellwig xfs_filblks_t temp; /* temp for indirect calculations */ 251530f712c9SDave Chinner 2516be51f811SDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 251730f712c9SDave Chinner ASSERT(isnullstartblock(new->br_startblock)); 251830f712c9SDave Chinner 251930f712c9SDave Chinner /* 252030f712c9SDave Chinner * Check and set flags if this segment has a left neighbor 252130f712c9SDave Chinner */ 2522b2b1712aSChristoph Hellwig if (xfs_iext_peek_prev_extent(ifp, icur, &left)) { 252330f712c9SDave Chinner state |= BMAP_LEFT_VALID; 252430f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 252530f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 252630f712c9SDave Chinner } 252730f712c9SDave Chinner 252830f712c9SDave Chinner /* 252930f712c9SDave Chinner * Check and set flags if the current (right) segment exists. 253030f712c9SDave Chinner * If it doesn't exist, we're converting the hole at end-of-file. 253130f712c9SDave Chinner */ 2532b2b1712aSChristoph Hellwig if (xfs_iext_get_extent(ifp, icur, &right)) { 253330f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 253430f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 253530f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 253630f712c9SDave Chinner } 253730f712c9SDave Chinner 253830f712c9SDave Chinner /* 253930f712c9SDave Chinner * Set contiguity flags on the left and right neighbors. 254030f712c9SDave Chinner * Don't let extents get too large, even if the pieces are contiguous. 254130f712c9SDave Chinner */ 254230f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && (state & BMAP_LEFT_DELAY) && 254330f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 254430f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 254530f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 254630f712c9SDave Chinner 254730f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && (state & BMAP_RIGHT_DELAY) && 254830f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 254930f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 255030f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 255130f712c9SDave Chinner (left.br_blockcount + new->br_blockcount + 255230f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN))) 255330f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 255430f712c9SDave Chinner 255530f712c9SDave Chinner /* 255630f712c9SDave Chinner * Switch out based on the contiguity flags. 255730f712c9SDave Chinner */ 255830f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 255930f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 256030f712c9SDave Chinner /* 256130f712c9SDave Chinner * New allocation is contiguous with delayed allocations 256230f712c9SDave Chinner * on the left and on the right. 256330f712c9SDave Chinner * Merge all three into a single extent record. 256430f712c9SDave Chinner */ 256530f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount + 256630f712c9SDave Chinner right.br_blockcount; 256730f712c9SDave Chinner 256830f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 256930f712c9SDave Chinner startblockval(new->br_startblock) + 257030f712c9SDave Chinner startblockval(right.br_startblock); 25710e339ef8SBrian Foster newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 25720e339ef8SBrian Foster oldlen); 25733ffc18ecSChristoph Hellwig left.br_startblock = nullstartblock(newlen); 25743ffc18ecSChristoph Hellwig left.br_blockcount = temp; 257530f712c9SDave Chinner 2576c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 2577b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2578b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &left); 257930f712c9SDave Chinner break; 258030f712c9SDave Chinner 258130f712c9SDave Chinner case BMAP_LEFT_CONTIG: 258230f712c9SDave Chinner /* 258330f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 258430f712c9SDave Chinner * on the left. 258530f712c9SDave Chinner * Merge the new allocation with the left neighbor. 258630f712c9SDave Chinner */ 258730f712c9SDave Chinner temp = left.br_blockcount + new->br_blockcount; 258830f712c9SDave Chinner 258930f712c9SDave Chinner oldlen = startblockval(left.br_startblock) + 259030f712c9SDave Chinner startblockval(new->br_startblock); 25910e339ef8SBrian Foster newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 25920e339ef8SBrian Foster oldlen); 25933ffc18ecSChristoph Hellwig left.br_blockcount = temp; 25943ffc18ecSChristoph Hellwig left.br_startblock = nullstartblock(newlen); 259541d196f4SChristoph Hellwig 2596b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2597b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &left); 259830f712c9SDave Chinner break; 259930f712c9SDave Chinner 260030f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 260130f712c9SDave Chinner /* 260230f712c9SDave Chinner * New allocation is contiguous with a delayed allocation 260330f712c9SDave Chinner * on the right. 260430f712c9SDave Chinner * Merge the new allocation with the right neighbor. 260530f712c9SDave Chinner */ 260630f712c9SDave Chinner temp = new->br_blockcount + right.br_blockcount; 260730f712c9SDave Chinner oldlen = startblockval(new->br_startblock) + 260830f712c9SDave Chinner startblockval(right.br_startblock); 26090e339ef8SBrian Foster newlen = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, temp), 26100e339ef8SBrian Foster oldlen); 26113ffc18ecSChristoph Hellwig right.br_startoff = new->br_startoff; 26123ffc18ecSChristoph Hellwig right.br_startblock = nullstartblock(newlen); 26133ffc18ecSChristoph Hellwig right.br_blockcount = temp; 2614b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &right); 261530f712c9SDave Chinner break; 261630f712c9SDave Chinner 261730f712c9SDave Chinner case 0: 261830f712c9SDave Chinner /* 261930f712c9SDave Chinner * New allocation is not contiguous with another 262030f712c9SDave Chinner * delayed allocation. 262130f712c9SDave Chinner * Insert a new entry. 262230f712c9SDave Chinner */ 262330f712c9SDave Chinner oldlen = newlen = 0; 26240254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, new, state); 262530f712c9SDave Chinner break; 262630f712c9SDave Chinner } 262730f712c9SDave Chinner if (oldlen != newlen) { 262830f712c9SDave Chinner ASSERT(oldlen > newlen); 26290d485adaSDave Chinner xfs_mod_fdblocks(ip->i_mount, (int64_t)(oldlen - newlen), 26300d485adaSDave Chinner false); 263130f712c9SDave Chinner /* 263230f712c9SDave Chinner * Nothing to do for disk quota accounting here. 263330f712c9SDave Chinner */ 263430f712c9SDave Chinner } 263530f712c9SDave Chinner } 263630f712c9SDave Chinner 263730f712c9SDave Chinner /* 263830f712c9SDave Chinner * Convert a hole to a real allocation. 263930f712c9SDave Chinner */ 264030f712c9SDave Chinner STATIC int /* error */ 264130f712c9SDave Chinner xfs_bmap_add_extent_hole_real( 26426d04558fSChristoph Hellwig struct xfs_trans *tp, 26436d04558fSChristoph Hellwig struct xfs_inode *ip, 26446d04558fSChristoph Hellwig int whichfork, 2645b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 26466d04558fSChristoph Hellwig struct xfs_btree_cur **curp, 26476d04558fSChristoph Hellwig struct xfs_bmbt_irec *new, 26486d04558fSChristoph Hellwig xfs_fsblock_t *first, 264995eb308cSDarrick J. Wong int *logflagsp, 265095eb308cSDarrick J. Wong int flags) 265130f712c9SDave Chinner { 26526d04558fSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 26536d04558fSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 26546d04558fSChristoph Hellwig struct xfs_btree_cur *cur = *curp; 265530f712c9SDave Chinner int error; /* error return value */ 265630f712c9SDave Chinner int i; /* temp state */ 265730f712c9SDave Chinner xfs_bmbt_irec_t left; /* left neighbor extent entry */ 265830f712c9SDave Chinner xfs_bmbt_irec_t right; /* right neighbor extent entry */ 265930f712c9SDave Chinner int rval=0; /* return value (logging flags) */ 2660060ea65bSChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 26611abb9e55SChristoph Hellwig struct xfs_bmbt_irec old; 266230f712c9SDave Chinner 266330f712c9SDave Chinner ASSERT(!isnullstartblock(new->br_startblock)); 26646d04558fSChristoph Hellwig ASSERT(!cur || !(cur->bc_private.b.flags & XFS_BTCUR_BPRV_WASDEL)); 266530f712c9SDave Chinner 2666ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_add_exlist); 266730f712c9SDave Chinner 266830f712c9SDave Chinner /* 266930f712c9SDave Chinner * Check and set flags if this segment has a left neighbor. 267030f712c9SDave Chinner */ 2671b2b1712aSChristoph Hellwig if (xfs_iext_peek_prev_extent(ifp, icur, &left)) { 267230f712c9SDave Chinner state |= BMAP_LEFT_VALID; 267330f712c9SDave Chinner if (isnullstartblock(left.br_startblock)) 267430f712c9SDave Chinner state |= BMAP_LEFT_DELAY; 267530f712c9SDave Chinner } 267630f712c9SDave Chinner 267730f712c9SDave Chinner /* 267830f712c9SDave Chinner * Check and set flags if this segment has a current value. 267930f712c9SDave Chinner * Not true if we're inserting into the "hole" at eof. 268030f712c9SDave Chinner */ 2681b2b1712aSChristoph Hellwig if (xfs_iext_get_extent(ifp, icur, &right)) { 268230f712c9SDave Chinner state |= BMAP_RIGHT_VALID; 268330f712c9SDave Chinner if (isnullstartblock(right.br_startblock)) 268430f712c9SDave Chinner state |= BMAP_RIGHT_DELAY; 268530f712c9SDave Chinner } 268630f712c9SDave Chinner 268730f712c9SDave Chinner /* 268830f712c9SDave Chinner * We're inserting a real allocation between "left" and "right". 268930f712c9SDave Chinner * Set the contiguity flags. Don't let extents get too large. 269030f712c9SDave Chinner */ 269130f712c9SDave Chinner if ((state & BMAP_LEFT_VALID) && !(state & BMAP_LEFT_DELAY) && 269230f712c9SDave Chinner left.br_startoff + left.br_blockcount == new->br_startoff && 269330f712c9SDave Chinner left.br_startblock + left.br_blockcount == new->br_startblock && 269430f712c9SDave Chinner left.br_state == new->br_state && 269530f712c9SDave Chinner left.br_blockcount + new->br_blockcount <= MAXEXTLEN) 269630f712c9SDave Chinner state |= BMAP_LEFT_CONTIG; 269730f712c9SDave Chinner 269830f712c9SDave Chinner if ((state & BMAP_RIGHT_VALID) && !(state & BMAP_RIGHT_DELAY) && 269930f712c9SDave Chinner new->br_startoff + new->br_blockcount == right.br_startoff && 270030f712c9SDave Chinner new->br_startblock + new->br_blockcount == right.br_startblock && 270130f712c9SDave Chinner new->br_state == right.br_state && 270230f712c9SDave Chinner new->br_blockcount + right.br_blockcount <= MAXEXTLEN && 270330f712c9SDave Chinner (!(state & BMAP_LEFT_CONTIG) || 270430f712c9SDave Chinner left.br_blockcount + new->br_blockcount + 270530f712c9SDave Chinner right.br_blockcount <= MAXEXTLEN)) 270630f712c9SDave Chinner state |= BMAP_RIGHT_CONTIG; 270730f712c9SDave Chinner 270830f712c9SDave Chinner error = 0; 270930f712c9SDave Chinner /* 271030f712c9SDave Chinner * Select which case we're in here, and implement it. 271130f712c9SDave Chinner */ 271230f712c9SDave Chinner switch (state & (BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG)) { 271330f712c9SDave Chinner case BMAP_LEFT_CONTIG | BMAP_RIGHT_CONTIG: 271430f712c9SDave Chinner /* 271530f712c9SDave Chinner * New allocation is contiguous with real allocations on the 271630f712c9SDave Chinner * left and on the right. 271730f712c9SDave Chinner * Merge all three into a single extent record. 271830f712c9SDave Chinner */ 27191abb9e55SChristoph Hellwig left.br_blockcount += new->br_blockcount + right.br_blockcount; 272030f712c9SDave Chinner 2721c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 2722b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2723b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &left); 272430f712c9SDave Chinner 27256d04558fSChristoph Hellwig XFS_IFORK_NEXT_SET(ip, whichfork, 27266d04558fSChristoph Hellwig XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 27276d04558fSChristoph Hellwig if (cur == NULL) { 272830f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 272930f712c9SDave Chinner } else { 273030f712c9SDave Chinner rval = XFS_ILOG_CORE; 2731e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &right, &i); 273230f712c9SDave Chinner if (error) 273330f712c9SDave Chinner goto done; 2734c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 27356d04558fSChristoph Hellwig error = xfs_btree_delete(cur, &i); 273630f712c9SDave Chinner if (error) 273730f712c9SDave Chinner goto done; 2738c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 27396d04558fSChristoph Hellwig error = xfs_btree_decrement(cur, 0, &i); 274030f712c9SDave Chinner if (error) 274130f712c9SDave Chinner goto done; 2742c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2743a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &left); 274430f712c9SDave Chinner if (error) 274530f712c9SDave Chinner goto done; 274630f712c9SDave Chinner } 274730f712c9SDave Chinner break; 274830f712c9SDave Chinner 274930f712c9SDave Chinner case BMAP_LEFT_CONTIG: 275030f712c9SDave Chinner /* 275130f712c9SDave Chinner * New allocation is contiguous with a real allocation 275230f712c9SDave Chinner * on the left. 275330f712c9SDave Chinner * Merge the new allocation with the left neighbor. 275430f712c9SDave Chinner */ 27551abb9e55SChristoph Hellwig old = left; 27561abb9e55SChristoph Hellwig left.br_blockcount += new->br_blockcount; 27571d2e0089SChristoph Hellwig 2758b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 2759b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &left); 276030f712c9SDave Chinner 27616d04558fSChristoph Hellwig if (cur == NULL) { 276230f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 276330f712c9SDave Chinner } else { 276430f712c9SDave Chinner rval = 0; 2765e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 276630f712c9SDave Chinner if (error) 276730f712c9SDave Chinner goto done; 2768c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2769a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &left); 277030f712c9SDave Chinner if (error) 277130f712c9SDave Chinner goto done; 277230f712c9SDave Chinner } 277330f712c9SDave Chinner break; 277430f712c9SDave Chinner 277530f712c9SDave Chinner case BMAP_RIGHT_CONTIG: 277630f712c9SDave Chinner /* 277730f712c9SDave Chinner * New allocation is contiguous with a real allocation 277830f712c9SDave Chinner * on the right. 277930f712c9SDave Chinner * Merge the new allocation with the right neighbor. 278030f712c9SDave Chinner */ 27811abb9e55SChristoph Hellwig old = right; 2782ca5d8e5bSChristoph Hellwig 27831abb9e55SChristoph Hellwig right.br_startoff = new->br_startoff; 27841abb9e55SChristoph Hellwig right.br_startblock = new->br_startblock; 27851abb9e55SChristoph Hellwig right.br_blockcount += new->br_blockcount; 2786b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &right); 278730f712c9SDave Chinner 27886d04558fSChristoph Hellwig if (cur == NULL) { 278930f712c9SDave Chinner rval = xfs_ilog_fext(whichfork); 279030f712c9SDave Chinner } else { 279130f712c9SDave Chinner rval = 0; 2792e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &old, &i); 279330f712c9SDave Chinner if (error) 279430f712c9SDave Chinner goto done; 2795c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 2796a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &right); 279730f712c9SDave Chinner if (error) 279830f712c9SDave Chinner goto done; 279930f712c9SDave Chinner } 280030f712c9SDave Chinner break; 280130f712c9SDave Chinner 280230f712c9SDave Chinner case 0: 280330f712c9SDave Chinner /* 280430f712c9SDave Chinner * New allocation is not contiguous with another 280530f712c9SDave Chinner * real allocation. 280630f712c9SDave Chinner * Insert a new entry. 280730f712c9SDave Chinner */ 28080254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, new, state); 28096d04558fSChristoph Hellwig XFS_IFORK_NEXT_SET(ip, whichfork, 28106d04558fSChristoph Hellwig XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 28116d04558fSChristoph Hellwig if (cur == NULL) { 281230f712c9SDave Chinner rval = XFS_ILOG_CORE | xfs_ilog_fext(whichfork); 281330f712c9SDave Chinner } else { 281430f712c9SDave Chinner rval = XFS_ILOG_CORE; 2815e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, new, &i); 281630f712c9SDave Chinner if (error) 281730f712c9SDave Chinner goto done; 2818c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 0, done); 28196d04558fSChristoph Hellwig error = xfs_btree_insert(cur, &i); 282030f712c9SDave Chinner if (error) 282130f712c9SDave Chinner goto done; 2822c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 282330f712c9SDave Chinner } 282430f712c9SDave Chinner break; 282530f712c9SDave Chinner } 282630f712c9SDave Chinner 282795eb308cSDarrick J. Wong /* add reverse mapping unless caller opted out */ 282895eb308cSDarrick J. Wong if (!(flags & XFS_BMAPI_NORMAP)) { 282981ba8f3eSBrian Foster error = xfs_rmap_map_extent(mp, tp->t_dfops, ip, whichfork, 283081ba8f3eSBrian Foster new); 28319c194644SDarrick J. Wong if (error) 28329c194644SDarrick J. Wong goto done; 283395eb308cSDarrick J. Wong } 28349c194644SDarrick J. Wong 283530f712c9SDave Chinner /* convert to a btree if necessary */ 28366d04558fSChristoph Hellwig if (xfs_bmap_needs_btree(ip, whichfork)) { 283730f712c9SDave Chinner int tmp_logflags; /* partial log flag return val */ 283830f712c9SDave Chinner 28396d04558fSChristoph Hellwig ASSERT(cur == NULL); 284081ba8f3eSBrian Foster error = xfs_bmap_extents_to_btree(tp, ip, first, curp, 0, 284181ba8f3eSBrian Foster &tmp_logflags, whichfork); 28426d04558fSChristoph Hellwig *logflagsp |= tmp_logflags; 28436d04558fSChristoph Hellwig cur = *curp; 284430f712c9SDave Chinner if (error) 284530f712c9SDave Chinner goto done; 284630f712c9SDave Chinner } 284730f712c9SDave Chinner 284830f712c9SDave Chinner /* clear out the allocated field, done with it now in any case. */ 28496d04558fSChristoph Hellwig if (cur) 28506d04558fSChristoph Hellwig cur->bc_private.b.allocated = 0; 285130f712c9SDave Chinner 28526d04558fSChristoph Hellwig xfs_bmap_check_leaf_extents(cur, ip, whichfork); 285330f712c9SDave Chinner done: 28546d04558fSChristoph Hellwig *logflagsp |= rval; 285530f712c9SDave Chinner return error; 285630f712c9SDave Chinner } 285730f712c9SDave Chinner 285830f712c9SDave Chinner /* 285930f712c9SDave Chinner * Functions used in the extent read, allocate and remove paths 286030f712c9SDave Chinner */ 286130f712c9SDave Chinner 286230f712c9SDave Chinner /* 286330f712c9SDave Chinner * Adjust the size of the new extent based on di_extsize and rt extsize. 286430f712c9SDave Chinner */ 286530f712c9SDave Chinner int 286630f712c9SDave Chinner xfs_bmap_extsize_align( 286730f712c9SDave Chinner xfs_mount_t *mp, 286830f712c9SDave Chinner xfs_bmbt_irec_t *gotp, /* next extent pointer */ 286930f712c9SDave Chinner xfs_bmbt_irec_t *prevp, /* previous extent pointer */ 287030f712c9SDave Chinner xfs_extlen_t extsz, /* align to this extent size */ 287130f712c9SDave Chinner int rt, /* is this a realtime inode? */ 287230f712c9SDave Chinner int eof, /* is extent at end-of-file? */ 287330f712c9SDave Chinner int delay, /* creating delalloc extent? */ 287430f712c9SDave Chinner int convert, /* overwriting unwritten extent? */ 287530f712c9SDave Chinner xfs_fileoff_t *offp, /* in/out: aligned offset */ 287630f712c9SDave Chinner xfs_extlen_t *lenp) /* in/out: aligned length */ 287730f712c9SDave Chinner { 287830f712c9SDave Chinner xfs_fileoff_t orig_off; /* original offset */ 287930f712c9SDave Chinner xfs_extlen_t orig_alen; /* original length */ 288030f712c9SDave Chinner xfs_fileoff_t orig_end; /* original off+len */ 288130f712c9SDave Chinner xfs_fileoff_t nexto; /* next file offset */ 288230f712c9SDave Chinner xfs_fileoff_t prevo; /* previous file offset */ 288330f712c9SDave Chinner xfs_fileoff_t align_off; /* temp for offset */ 288430f712c9SDave Chinner xfs_extlen_t align_alen; /* temp for length */ 288530f712c9SDave Chinner xfs_extlen_t temp; /* temp for calculations */ 288630f712c9SDave Chinner 288730f712c9SDave Chinner if (convert) 288830f712c9SDave Chinner return 0; 288930f712c9SDave Chinner 289030f712c9SDave Chinner orig_off = align_off = *offp; 289130f712c9SDave Chinner orig_alen = align_alen = *lenp; 289230f712c9SDave Chinner orig_end = orig_off + orig_alen; 289330f712c9SDave Chinner 289430f712c9SDave Chinner /* 289530f712c9SDave Chinner * If this request overlaps an existing extent, then don't 289630f712c9SDave Chinner * attempt to perform any additional alignment. 289730f712c9SDave Chinner */ 289830f712c9SDave Chinner if (!delay && !eof && 289930f712c9SDave Chinner (orig_off >= gotp->br_startoff) && 290030f712c9SDave Chinner (orig_end <= gotp->br_startoff + gotp->br_blockcount)) { 290130f712c9SDave Chinner return 0; 290230f712c9SDave Chinner } 290330f712c9SDave Chinner 290430f712c9SDave Chinner /* 290530f712c9SDave Chinner * If the file offset is unaligned vs. the extent size 290630f712c9SDave Chinner * we need to align it. This will be possible unless 290730f712c9SDave Chinner * the file was previously written with a kernel that didn't 290830f712c9SDave Chinner * perform this alignment, or if a truncate shot us in the 290930f712c9SDave Chinner * foot. 291030f712c9SDave Chinner */ 29110703a8e1SDave Chinner div_u64_rem(orig_off, extsz, &temp); 291230f712c9SDave Chinner if (temp) { 291330f712c9SDave Chinner align_alen += temp; 291430f712c9SDave Chinner align_off -= temp; 291530f712c9SDave Chinner } 29166dea405eSDave Chinner 29176dea405eSDave Chinner /* Same adjustment for the end of the requested area. */ 29186dea405eSDave Chinner temp = (align_alen % extsz); 29196dea405eSDave Chinner if (temp) 292030f712c9SDave Chinner align_alen += extsz - temp; 29216dea405eSDave Chinner 29226dea405eSDave Chinner /* 29236dea405eSDave Chinner * For large extent hint sizes, the aligned extent might be larger than 29246dea405eSDave Chinner * MAXEXTLEN. In that case, reduce the size by an extsz so that it pulls 29256dea405eSDave Chinner * the length back under MAXEXTLEN. The outer allocation loops handle 29266dea405eSDave Chinner * short allocation just fine, so it is safe to do this. We only want to 29276dea405eSDave Chinner * do it when we are forced to, though, because it means more allocation 29286dea405eSDave Chinner * operations are required. 29296dea405eSDave Chinner */ 29306dea405eSDave Chinner while (align_alen > MAXEXTLEN) 29316dea405eSDave Chinner align_alen -= extsz; 29326dea405eSDave Chinner ASSERT(align_alen <= MAXEXTLEN); 29336dea405eSDave Chinner 293430f712c9SDave Chinner /* 293530f712c9SDave Chinner * If the previous block overlaps with this proposed allocation 293630f712c9SDave Chinner * then move the start forward without adjusting the length. 293730f712c9SDave Chinner */ 293830f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) { 293930f712c9SDave Chinner if (prevp->br_startblock == HOLESTARTBLOCK) 294030f712c9SDave Chinner prevo = prevp->br_startoff; 294130f712c9SDave Chinner else 294230f712c9SDave Chinner prevo = prevp->br_startoff + prevp->br_blockcount; 294330f712c9SDave Chinner } else 294430f712c9SDave Chinner prevo = 0; 294530f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 294630f712c9SDave Chinner align_off = prevo; 294730f712c9SDave Chinner /* 294830f712c9SDave Chinner * If the next block overlaps with this proposed allocation 294930f712c9SDave Chinner * then move the start back without adjusting the length, 295030f712c9SDave Chinner * but not before offset 0. 295130f712c9SDave Chinner * This may of course make the start overlap previous block, 295230f712c9SDave Chinner * and if we hit the offset 0 limit then the next block 295330f712c9SDave Chinner * can still overlap too. 295430f712c9SDave Chinner */ 295530f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) { 295630f712c9SDave Chinner if ((delay && gotp->br_startblock == HOLESTARTBLOCK) || 295730f712c9SDave Chinner (!delay && gotp->br_startblock == DELAYSTARTBLOCK)) 295830f712c9SDave Chinner nexto = gotp->br_startoff + gotp->br_blockcount; 295930f712c9SDave Chinner else 296030f712c9SDave Chinner nexto = gotp->br_startoff; 296130f712c9SDave Chinner } else 296230f712c9SDave Chinner nexto = NULLFILEOFF; 296330f712c9SDave Chinner if (!eof && 296430f712c9SDave Chinner align_off + align_alen != orig_end && 296530f712c9SDave Chinner align_off + align_alen > nexto) 296630f712c9SDave Chinner align_off = nexto > align_alen ? nexto - align_alen : 0; 296730f712c9SDave Chinner /* 296830f712c9SDave Chinner * If we're now overlapping the next or previous extent that 296930f712c9SDave Chinner * means we can't fit an extsz piece in this hole. Just move 297030f712c9SDave Chinner * the start forward to the first valid spot and set 297130f712c9SDave Chinner * the length so we hit the end. 297230f712c9SDave Chinner */ 297330f712c9SDave Chinner if (align_off != orig_off && align_off < prevo) 297430f712c9SDave Chinner align_off = prevo; 297530f712c9SDave Chinner if (align_off + align_alen != orig_end && 297630f712c9SDave Chinner align_off + align_alen > nexto && 297730f712c9SDave Chinner nexto != NULLFILEOFF) { 297830f712c9SDave Chinner ASSERT(nexto > prevo); 297930f712c9SDave Chinner align_alen = nexto - align_off; 298030f712c9SDave Chinner } 298130f712c9SDave Chinner 298230f712c9SDave Chinner /* 298330f712c9SDave Chinner * If realtime, and the result isn't a multiple of the realtime 298430f712c9SDave Chinner * extent size we need to remove blocks until it is. 298530f712c9SDave Chinner */ 298630f712c9SDave Chinner if (rt && (temp = (align_alen % mp->m_sb.sb_rextsize))) { 298730f712c9SDave Chinner /* 298830f712c9SDave Chinner * We're not covering the original request, or 298930f712c9SDave Chinner * we won't be able to once we fix the length. 299030f712c9SDave Chinner */ 299130f712c9SDave Chinner if (orig_off < align_off || 299230f712c9SDave Chinner orig_end > align_off + align_alen || 299330f712c9SDave Chinner align_alen - temp < orig_alen) 29942451337dSDave Chinner return -EINVAL; 299530f712c9SDave Chinner /* 299630f712c9SDave Chinner * Try to fix it by moving the start up. 299730f712c9SDave Chinner */ 299830f712c9SDave Chinner if (align_off + temp <= orig_off) { 299930f712c9SDave Chinner align_alen -= temp; 300030f712c9SDave Chinner align_off += temp; 300130f712c9SDave Chinner } 300230f712c9SDave Chinner /* 300330f712c9SDave Chinner * Try to fix it by moving the end in. 300430f712c9SDave Chinner */ 300530f712c9SDave Chinner else if (align_off + align_alen - temp >= orig_end) 300630f712c9SDave Chinner align_alen -= temp; 300730f712c9SDave Chinner /* 300830f712c9SDave Chinner * Set the start to the minimum then trim the length. 300930f712c9SDave Chinner */ 301030f712c9SDave Chinner else { 301130f712c9SDave Chinner align_alen -= orig_off - align_off; 301230f712c9SDave Chinner align_off = orig_off; 301330f712c9SDave Chinner align_alen -= align_alen % mp->m_sb.sb_rextsize; 301430f712c9SDave Chinner } 301530f712c9SDave Chinner /* 301630f712c9SDave Chinner * Result doesn't cover the request, fail it. 301730f712c9SDave Chinner */ 301830f712c9SDave Chinner if (orig_off < align_off || orig_end > align_off + align_alen) 30192451337dSDave Chinner return -EINVAL; 302030f712c9SDave Chinner } else { 302130f712c9SDave Chinner ASSERT(orig_off >= align_off); 30226dea405eSDave Chinner /* see MAXEXTLEN handling above */ 30236dea405eSDave Chinner ASSERT(orig_end <= align_off + align_alen || 30246dea405eSDave Chinner align_alen + extsz > MAXEXTLEN); 302530f712c9SDave Chinner } 302630f712c9SDave Chinner 302730f712c9SDave Chinner #ifdef DEBUG 302830f712c9SDave Chinner if (!eof && gotp->br_startoff != NULLFILEOFF) 302930f712c9SDave Chinner ASSERT(align_off + align_alen <= gotp->br_startoff); 303030f712c9SDave Chinner if (prevp->br_startoff != NULLFILEOFF) 303130f712c9SDave Chinner ASSERT(align_off >= prevp->br_startoff + prevp->br_blockcount); 303230f712c9SDave Chinner #endif 303330f712c9SDave Chinner 303430f712c9SDave Chinner *lenp = align_alen; 303530f712c9SDave Chinner *offp = align_off; 303630f712c9SDave Chinner return 0; 303730f712c9SDave Chinner } 303830f712c9SDave Chinner 303930f712c9SDave Chinner #define XFS_ALLOC_GAP_UNITS 4 304030f712c9SDave Chinner 304130f712c9SDave Chinner void 304230f712c9SDave Chinner xfs_bmap_adjacent( 304330f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 304430f712c9SDave Chinner { 304530f712c9SDave Chinner xfs_fsblock_t adjust; /* adjustment to block numbers */ 304630f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 304730f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 304830f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 304930f712c9SDave Chinner int rt; /* true if inode is realtime */ 305030f712c9SDave Chinner 305130f712c9SDave Chinner #define ISVALID(x,y) \ 305230f712c9SDave Chinner (rt ? \ 305330f712c9SDave Chinner (x) < mp->m_sb.sb_rblocks : \ 305430f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) == XFS_FSB_TO_AGNO(mp, y) && \ 305530f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, x) < mp->m_sb.sb_agcount && \ 305630f712c9SDave Chinner XFS_FSB_TO_AGBNO(mp, x) < mp->m_sb.sb_agblocks) 305730f712c9SDave Chinner 305830f712c9SDave Chinner mp = ap->ip->i_mount; 305930f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 3060292378edSDave Chinner rt = XFS_IS_REALTIME_INODE(ap->ip) && 3061292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype); 306230f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 306330f712c9SDave Chinner /* 306430f712c9SDave Chinner * If allocating at eof, and there's a previous real block, 306530f712c9SDave Chinner * try to use its last block as our starting point. 306630f712c9SDave Chinner */ 306730f712c9SDave Chinner if (ap->eof && ap->prev.br_startoff != NULLFILEOFF && 306830f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 306930f712c9SDave Chinner ISVALID(ap->prev.br_startblock + ap->prev.br_blockcount, 307030f712c9SDave Chinner ap->prev.br_startblock)) { 307130f712c9SDave Chinner ap->blkno = ap->prev.br_startblock + ap->prev.br_blockcount; 307230f712c9SDave Chinner /* 307330f712c9SDave Chinner * Adjust for the gap between prevp and us. 307430f712c9SDave Chinner */ 307530f712c9SDave Chinner adjust = ap->offset - 307630f712c9SDave Chinner (ap->prev.br_startoff + ap->prev.br_blockcount); 307730f712c9SDave Chinner if (adjust && 307830f712c9SDave Chinner ISVALID(ap->blkno + adjust, ap->prev.br_startblock)) 307930f712c9SDave Chinner ap->blkno += adjust; 308030f712c9SDave Chinner } 308130f712c9SDave Chinner /* 308230f712c9SDave Chinner * If not at eof, then compare the two neighbor blocks. 308330f712c9SDave Chinner * Figure out whether either one gives us a good starting point, 308430f712c9SDave Chinner * and pick the better one. 308530f712c9SDave Chinner */ 308630f712c9SDave Chinner else if (!ap->eof) { 308730f712c9SDave Chinner xfs_fsblock_t gotbno; /* right side block number */ 308830f712c9SDave Chinner xfs_fsblock_t gotdiff=0; /* right side difference */ 308930f712c9SDave Chinner xfs_fsblock_t prevbno; /* left side block number */ 309030f712c9SDave Chinner xfs_fsblock_t prevdiff=0; /* left side difference */ 309130f712c9SDave Chinner 309230f712c9SDave Chinner /* 309330f712c9SDave Chinner * If there's a previous (left) block, select a requested 309430f712c9SDave Chinner * start block based on it. 309530f712c9SDave Chinner */ 309630f712c9SDave Chinner if (ap->prev.br_startoff != NULLFILEOFF && 309730f712c9SDave Chinner !isnullstartblock(ap->prev.br_startblock) && 309830f712c9SDave Chinner (prevbno = ap->prev.br_startblock + 309930f712c9SDave Chinner ap->prev.br_blockcount) && 310030f712c9SDave Chinner ISVALID(prevbno, ap->prev.br_startblock)) { 310130f712c9SDave Chinner /* 310230f712c9SDave Chinner * Calculate gap to end of previous block. 310330f712c9SDave Chinner */ 310430f712c9SDave Chinner adjust = prevdiff = ap->offset - 310530f712c9SDave Chinner (ap->prev.br_startoff + 310630f712c9SDave Chinner ap->prev.br_blockcount); 310730f712c9SDave Chinner /* 310830f712c9SDave Chinner * Figure the startblock based on the previous block's 310930f712c9SDave Chinner * end and the gap size. 311030f712c9SDave Chinner * Heuristic! 311130f712c9SDave Chinner * If the gap is large relative to the piece we're 311230f712c9SDave Chinner * allocating, or using it gives us an invalid block 311330f712c9SDave Chinner * number, then just use the end of the previous block. 311430f712c9SDave Chinner */ 311530f712c9SDave Chinner if (prevdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 311630f712c9SDave Chinner ISVALID(prevbno + prevdiff, 311730f712c9SDave Chinner ap->prev.br_startblock)) 311830f712c9SDave Chinner prevbno += adjust; 311930f712c9SDave Chinner else 312030f712c9SDave Chinner prevdiff += adjust; 312130f712c9SDave Chinner /* 312230f712c9SDave Chinner * If the firstblock forbids it, can't use it, 312330f712c9SDave Chinner * must use default. 312430f712c9SDave Chinner */ 312530f712c9SDave Chinner if (!rt && !nullfb && 312630f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, prevbno) != fb_agno) 312730f712c9SDave Chinner prevbno = NULLFSBLOCK; 312830f712c9SDave Chinner } 312930f712c9SDave Chinner /* 313030f712c9SDave Chinner * No previous block or can't follow it, just default. 313130f712c9SDave Chinner */ 313230f712c9SDave Chinner else 313330f712c9SDave Chinner prevbno = NULLFSBLOCK; 313430f712c9SDave Chinner /* 313530f712c9SDave Chinner * If there's a following (right) block, select a requested 313630f712c9SDave Chinner * start block based on it. 313730f712c9SDave Chinner */ 313830f712c9SDave Chinner if (!isnullstartblock(ap->got.br_startblock)) { 313930f712c9SDave Chinner /* 314030f712c9SDave Chinner * Calculate gap to start of next block. 314130f712c9SDave Chinner */ 314230f712c9SDave Chinner adjust = gotdiff = ap->got.br_startoff - ap->offset; 314330f712c9SDave Chinner /* 314430f712c9SDave Chinner * Figure the startblock based on the next block's 314530f712c9SDave Chinner * start and the gap size. 314630f712c9SDave Chinner */ 314730f712c9SDave Chinner gotbno = ap->got.br_startblock; 314830f712c9SDave Chinner /* 314930f712c9SDave Chinner * Heuristic! 315030f712c9SDave Chinner * If the gap is large relative to the piece we're 315130f712c9SDave Chinner * allocating, or using it gives us an invalid block 315230f712c9SDave Chinner * number, then just use the start of the next block 315330f712c9SDave Chinner * offset by our length. 315430f712c9SDave Chinner */ 315530f712c9SDave Chinner if (gotdiff <= XFS_ALLOC_GAP_UNITS * ap->length && 315630f712c9SDave Chinner ISVALID(gotbno - gotdiff, gotbno)) 315730f712c9SDave Chinner gotbno -= adjust; 315830f712c9SDave Chinner else if (ISVALID(gotbno - ap->length, gotbno)) { 315930f712c9SDave Chinner gotbno -= ap->length; 316030f712c9SDave Chinner gotdiff += adjust - ap->length; 316130f712c9SDave Chinner } else 316230f712c9SDave Chinner gotdiff += adjust; 316330f712c9SDave Chinner /* 316430f712c9SDave Chinner * If the firstblock forbids it, can't use it, 316530f712c9SDave Chinner * must use default. 316630f712c9SDave Chinner */ 316730f712c9SDave Chinner if (!rt && !nullfb && 316830f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, gotbno) != fb_agno) 316930f712c9SDave Chinner gotbno = NULLFSBLOCK; 317030f712c9SDave Chinner } 317130f712c9SDave Chinner /* 317230f712c9SDave Chinner * No next block, just default. 317330f712c9SDave Chinner */ 317430f712c9SDave Chinner else 317530f712c9SDave Chinner gotbno = NULLFSBLOCK; 317630f712c9SDave Chinner /* 317730f712c9SDave Chinner * If both valid, pick the better one, else the only good 317830f712c9SDave Chinner * one, else ap->blkno is already set (to 0 or the inode block). 317930f712c9SDave Chinner */ 318030f712c9SDave Chinner if (prevbno != NULLFSBLOCK && gotbno != NULLFSBLOCK) 318130f712c9SDave Chinner ap->blkno = prevdiff <= gotdiff ? prevbno : gotbno; 318230f712c9SDave Chinner else if (prevbno != NULLFSBLOCK) 318330f712c9SDave Chinner ap->blkno = prevbno; 318430f712c9SDave Chinner else if (gotbno != NULLFSBLOCK) 318530f712c9SDave Chinner ap->blkno = gotbno; 318630f712c9SDave Chinner } 318730f712c9SDave Chinner #undef ISVALID 318830f712c9SDave Chinner } 318930f712c9SDave Chinner 319030f712c9SDave Chinner static int 319130f712c9SDave Chinner xfs_bmap_longest_free_extent( 319230f712c9SDave Chinner struct xfs_trans *tp, 319330f712c9SDave Chinner xfs_agnumber_t ag, 319430f712c9SDave Chinner xfs_extlen_t *blen, 319530f712c9SDave Chinner int *notinit) 319630f712c9SDave Chinner { 319730f712c9SDave Chinner struct xfs_mount *mp = tp->t_mountp; 319830f712c9SDave Chinner struct xfs_perag *pag; 319930f712c9SDave Chinner xfs_extlen_t longest; 320030f712c9SDave Chinner int error = 0; 320130f712c9SDave Chinner 320230f712c9SDave Chinner pag = xfs_perag_get(mp, ag); 320330f712c9SDave Chinner if (!pag->pagf_init) { 320430f712c9SDave Chinner error = xfs_alloc_pagf_init(mp, tp, ag, XFS_ALLOC_FLAG_TRYLOCK); 320530f712c9SDave Chinner if (error) 320630f712c9SDave Chinner goto out; 320730f712c9SDave Chinner 320830f712c9SDave Chinner if (!pag->pagf_init) { 320930f712c9SDave Chinner *notinit = 1; 321030f712c9SDave Chinner goto out; 321130f712c9SDave Chinner } 321230f712c9SDave Chinner } 321330f712c9SDave Chinner 3214a1f69417SEric Sandeen longest = xfs_alloc_longest_free_extent(pag, 32153fd129b6SDarrick J. Wong xfs_alloc_min_freelist(mp, pag), 32163fd129b6SDarrick J. Wong xfs_ag_resv_needed(pag, XFS_AG_RESV_NONE)); 321730f712c9SDave Chinner if (*blen < longest) 321830f712c9SDave Chinner *blen = longest; 321930f712c9SDave Chinner 322030f712c9SDave Chinner out: 322130f712c9SDave Chinner xfs_perag_put(pag); 322230f712c9SDave Chinner return error; 322330f712c9SDave Chinner } 322430f712c9SDave Chinner 322530f712c9SDave Chinner static void 322630f712c9SDave Chinner xfs_bmap_select_minlen( 322730f712c9SDave Chinner struct xfs_bmalloca *ap, 322830f712c9SDave Chinner struct xfs_alloc_arg *args, 322930f712c9SDave Chinner xfs_extlen_t *blen, 323030f712c9SDave Chinner int notinit) 323130f712c9SDave Chinner { 323230f712c9SDave Chinner if (notinit || *blen < ap->minlen) { 323330f712c9SDave Chinner /* 323430f712c9SDave Chinner * Since we did a BUF_TRYLOCK above, it is possible that 323530f712c9SDave Chinner * there is space for this request. 323630f712c9SDave Chinner */ 323730f712c9SDave Chinner args->minlen = ap->minlen; 323830f712c9SDave Chinner } else if (*blen < args->maxlen) { 323930f712c9SDave Chinner /* 324030f712c9SDave Chinner * If the best seen length is less than the request length, 324130f712c9SDave Chinner * use the best as the minimum. 324230f712c9SDave Chinner */ 324330f712c9SDave Chinner args->minlen = *blen; 324430f712c9SDave Chinner } else { 324530f712c9SDave Chinner /* 324630f712c9SDave Chinner * Otherwise we've seen an extent as big as maxlen, use that 324730f712c9SDave Chinner * as the minimum. 324830f712c9SDave Chinner */ 324930f712c9SDave Chinner args->minlen = args->maxlen; 325030f712c9SDave Chinner } 325130f712c9SDave Chinner } 325230f712c9SDave Chinner 325330f712c9SDave Chinner STATIC int 325430f712c9SDave Chinner xfs_bmap_btalloc_nullfb( 325530f712c9SDave Chinner struct xfs_bmalloca *ap, 325630f712c9SDave Chinner struct xfs_alloc_arg *args, 325730f712c9SDave Chinner xfs_extlen_t *blen) 325830f712c9SDave Chinner { 325930f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 326030f712c9SDave Chinner xfs_agnumber_t ag, startag; 326130f712c9SDave Chinner int notinit = 0; 326230f712c9SDave Chinner int error; 326330f712c9SDave Chinner 326430f712c9SDave Chinner args->type = XFS_ALLOCTYPE_START_BNO; 326530f712c9SDave Chinner args->total = ap->total; 326630f712c9SDave Chinner 326730f712c9SDave Chinner startag = ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 326830f712c9SDave Chinner if (startag == NULLAGNUMBER) 326930f712c9SDave Chinner startag = ag = 0; 327030f712c9SDave Chinner 327130f712c9SDave Chinner while (*blen < args->maxlen) { 327230f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 327330f712c9SDave Chinner ¬init); 327430f712c9SDave Chinner if (error) 327530f712c9SDave Chinner return error; 327630f712c9SDave Chinner 327730f712c9SDave Chinner if (++ag == mp->m_sb.sb_agcount) 327830f712c9SDave Chinner ag = 0; 327930f712c9SDave Chinner if (ag == startag) 328030f712c9SDave Chinner break; 328130f712c9SDave Chinner } 328230f712c9SDave Chinner 328330f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 328430f712c9SDave Chinner return 0; 328530f712c9SDave Chinner } 328630f712c9SDave Chinner 328730f712c9SDave Chinner STATIC int 328830f712c9SDave Chinner xfs_bmap_btalloc_filestreams( 328930f712c9SDave Chinner struct xfs_bmalloca *ap, 329030f712c9SDave Chinner struct xfs_alloc_arg *args, 329130f712c9SDave Chinner xfs_extlen_t *blen) 329230f712c9SDave Chinner { 329330f712c9SDave Chinner struct xfs_mount *mp = ap->ip->i_mount; 329430f712c9SDave Chinner xfs_agnumber_t ag; 329530f712c9SDave Chinner int notinit = 0; 329630f712c9SDave Chinner int error; 329730f712c9SDave Chinner 329830f712c9SDave Chinner args->type = XFS_ALLOCTYPE_NEAR_BNO; 329930f712c9SDave Chinner args->total = ap->total; 330030f712c9SDave Chinner 330130f712c9SDave Chinner ag = XFS_FSB_TO_AGNO(mp, args->fsbno); 330230f712c9SDave Chinner if (ag == NULLAGNUMBER) 330330f712c9SDave Chinner ag = 0; 330430f712c9SDave Chinner 330530f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, ¬init); 330630f712c9SDave Chinner if (error) 330730f712c9SDave Chinner return error; 330830f712c9SDave Chinner 330930f712c9SDave Chinner if (*blen < args->maxlen) { 331030f712c9SDave Chinner error = xfs_filestream_new_ag(ap, &ag); 331130f712c9SDave Chinner if (error) 331230f712c9SDave Chinner return error; 331330f712c9SDave Chinner 331430f712c9SDave Chinner error = xfs_bmap_longest_free_extent(args->tp, ag, blen, 331530f712c9SDave Chinner ¬init); 331630f712c9SDave Chinner if (error) 331730f712c9SDave Chinner return error; 331830f712c9SDave Chinner 331930f712c9SDave Chinner } 332030f712c9SDave Chinner 332130f712c9SDave Chinner xfs_bmap_select_minlen(ap, args, blen, notinit); 332230f712c9SDave Chinner 332330f712c9SDave Chinner /* 332430f712c9SDave Chinner * Set the failure fallback case to look in the selected AG as stream 332530f712c9SDave Chinner * may have moved. 332630f712c9SDave Chinner */ 332730f712c9SDave Chinner ap->blkno = args->fsbno = XFS_AGB_TO_FSB(mp, ag, 0); 332830f712c9SDave Chinner return 0; 332930f712c9SDave Chinner } 333030f712c9SDave Chinner 3331751f3767SDarrick J. Wong /* Update all inode and quota accounting for the allocation we just did. */ 3332751f3767SDarrick J. Wong static void 3333751f3767SDarrick J. Wong xfs_bmap_btalloc_accounting( 3334751f3767SDarrick J. Wong struct xfs_bmalloca *ap, 3335751f3767SDarrick J. Wong struct xfs_alloc_arg *args) 3336751f3767SDarrick J. Wong { 33374b4c1326SDarrick J. Wong if (ap->flags & XFS_BMAPI_COWFORK) { 33384b4c1326SDarrick J. Wong /* 33394b4c1326SDarrick J. Wong * COW fork blocks are in-core only and thus are treated as 33404b4c1326SDarrick J. Wong * in-core quota reservation (like delalloc blocks) even when 33414b4c1326SDarrick J. Wong * converted to real blocks. The quota reservation is not 33424b4c1326SDarrick J. Wong * accounted to disk until blocks are remapped to the data 33434b4c1326SDarrick J. Wong * fork. So if these blocks were previously delalloc, we 33444b4c1326SDarrick J. Wong * already have quota reservation and there's nothing to do 33454b4c1326SDarrick J. Wong * yet. 33464b4c1326SDarrick J. Wong */ 33474b4c1326SDarrick J. Wong if (ap->wasdel) 33484b4c1326SDarrick J. Wong return; 33494b4c1326SDarrick J. Wong 33504b4c1326SDarrick J. Wong /* 33514b4c1326SDarrick J. Wong * Otherwise, we've allocated blocks in a hole. The transaction 33524b4c1326SDarrick J. Wong * has acquired in-core quota reservation for this extent. 33534b4c1326SDarrick J. Wong * Rather than account these as real blocks, however, we reduce 33544b4c1326SDarrick J. Wong * the transaction quota reservation based on the allocation. 33554b4c1326SDarrick J. Wong * This essentially transfers the transaction quota reservation 33564b4c1326SDarrick J. Wong * to that of a delalloc extent. 33574b4c1326SDarrick J. Wong */ 33584b4c1326SDarrick J. Wong ap->ip->i_delayed_blks += args->len; 33594b4c1326SDarrick J. Wong xfs_trans_mod_dquot_byino(ap->tp, ap->ip, XFS_TRANS_DQ_RES_BLKS, 33604b4c1326SDarrick J. Wong -(long)args->len); 33614b4c1326SDarrick J. Wong return; 33624b4c1326SDarrick J. Wong } 33634b4c1326SDarrick J. Wong 33644b4c1326SDarrick J. Wong /* data/attr fork only */ 3365751f3767SDarrick J. Wong ap->ip->i_d.di_nblocks += args->len; 3366751f3767SDarrick J. Wong xfs_trans_log_inode(ap->tp, ap->ip, XFS_ILOG_CORE); 3367751f3767SDarrick J. Wong if (ap->wasdel) 3368751f3767SDarrick J. Wong ap->ip->i_delayed_blks -= args->len; 3369751f3767SDarrick J. Wong xfs_trans_mod_dquot_byino(ap->tp, ap->ip, 3370751f3767SDarrick J. Wong ap->wasdel ? XFS_TRANS_DQ_DELBCOUNT : XFS_TRANS_DQ_BCOUNT, 3371751f3767SDarrick J. Wong args->len); 3372751f3767SDarrick J. Wong } 3373751f3767SDarrick J. Wong 337430f712c9SDave Chinner STATIC int 337530f712c9SDave Chinner xfs_bmap_btalloc( 337630f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 337730f712c9SDave Chinner { 337830f712c9SDave Chinner xfs_mount_t *mp; /* mount point structure */ 337930f712c9SDave Chinner xfs_alloctype_t atype = 0; /* type for allocation routines */ 3380292378edSDave Chinner xfs_extlen_t align = 0; /* minimum allocation alignment */ 338130f712c9SDave Chinner xfs_agnumber_t fb_agno; /* ag number of ap->firstblock */ 338230f712c9SDave Chinner xfs_agnumber_t ag; 338330f712c9SDave Chinner xfs_alloc_arg_t args; 33846d8a45ceSDarrick J. Wong xfs_fileoff_t orig_offset; 33856d8a45ceSDarrick J. Wong xfs_extlen_t orig_length; 338630f712c9SDave Chinner xfs_extlen_t blen; 338730f712c9SDave Chinner xfs_extlen_t nextminlen = 0; 338830f712c9SDave Chinner int nullfb; /* true if ap->firstblock isn't set */ 338930f712c9SDave Chinner int isaligned; 339030f712c9SDave Chinner int tryagain; 339130f712c9SDave Chinner int error; 339230f712c9SDave Chinner int stripe_align; 339330f712c9SDave Chinner 339430f712c9SDave Chinner ASSERT(ap->length); 33956d8a45ceSDarrick J. Wong orig_offset = ap->offset; 33966d8a45ceSDarrick J. Wong orig_length = ap->length; 339730f712c9SDave Chinner 339830f712c9SDave Chinner mp = ap->ip->i_mount; 339930f712c9SDave Chinner 340030f712c9SDave Chinner /* stripe alignment for allocation is determined by mount parameters */ 340130f712c9SDave Chinner stripe_align = 0; 340230f712c9SDave Chinner if (mp->m_swidth && (mp->m_flags & XFS_MOUNT_SWALLOC)) 340330f712c9SDave Chinner stripe_align = mp->m_swidth; 340430f712c9SDave Chinner else if (mp->m_dalign) 340530f712c9SDave Chinner stripe_align = mp->m_dalign; 340630f712c9SDave Chinner 3407f7ca3522SDarrick J. Wong if (ap->flags & XFS_BMAPI_COWFORK) 3408f7ca3522SDarrick J. Wong align = xfs_get_cowextsz_hint(ap->ip); 3409f7ca3522SDarrick J. Wong else if (xfs_alloc_is_userdata(ap->datatype)) 3410292378edSDave Chinner align = xfs_get_extsz_hint(ap->ip); 3411493611ebSChristoph Hellwig if (align) { 341230f712c9SDave Chinner error = xfs_bmap_extsize_align(mp, &ap->got, &ap->prev, 341330f712c9SDave Chinner align, 0, ap->eof, 0, ap->conv, 341430f712c9SDave Chinner &ap->offset, &ap->length); 341530f712c9SDave Chinner ASSERT(!error); 341630f712c9SDave Chinner ASSERT(ap->length); 341730f712c9SDave Chinner } 341830f712c9SDave Chinner 341930f712c9SDave Chinner 342030f712c9SDave Chinner nullfb = *ap->firstblock == NULLFSBLOCK; 342130f712c9SDave Chinner fb_agno = nullfb ? NULLAGNUMBER : XFS_FSB_TO_AGNO(mp, *ap->firstblock); 342230f712c9SDave Chinner if (nullfb) { 3423292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3424292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) { 342530f712c9SDave Chinner ag = xfs_filestream_lookup_ag(ap->ip); 342630f712c9SDave Chinner ag = (ag != NULLAGNUMBER) ? ag : 0; 342730f712c9SDave Chinner ap->blkno = XFS_AGB_TO_FSB(mp, ag, 0); 342830f712c9SDave Chinner } else { 342930f712c9SDave Chinner ap->blkno = XFS_INO_TO_FSB(mp, ap->ip->i_ino); 343030f712c9SDave Chinner } 343130f712c9SDave Chinner } else 343230f712c9SDave Chinner ap->blkno = *ap->firstblock; 343330f712c9SDave Chinner 343430f712c9SDave Chinner xfs_bmap_adjacent(ap); 343530f712c9SDave Chinner 343630f712c9SDave Chinner /* 343730f712c9SDave Chinner * If allowed, use ap->blkno; otherwise must use firstblock since 343830f712c9SDave Chinner * it's in the right allocation group. 343930f712c9SDave Chinner */ 344030f712c9SDave Chinner if (nullfb || XFS_FSB_TO_AGNO(mp, ap->blkno) == fb_agno) 344130f712c9SDave Chinner ; 344230f712c9SDave Chinner else 344330f712c9SDave Chinner ap->blkno = *ap->firstblock; 344430f712c9SDave Chinner /* 344530f712c9SDave Chinner * Normal allocation, done through xfs_alloc_vextent. 344630f712c9SDave Chinner */ 344730f712c9SDave Chinner tryagain = isaligned = 0; 344830f712c9SDave Chinner memset(&args, 0, sizeof(args)); 344930f712c9SDave Chinner args.tp = ap->tp; 345030f712c9SDave Chinner args.mp = mp; 345130f712c9SDave Chinner args.fsbno = ap->blkno; 3452340785ccSDarrick J. Wong xfs_rmap_skip_owner_update(&args.oinfo); 345330f712c9SDave Chinner 345430f712c9SDave Chinner /* Trim the allocation back to the maximum an AG can fit. */ 34559bb54cb5SDave Chinner args.maxlen = min(ap->length, mp->m_ag_max_usable); 345630f712c9SDave Chinner args.firstblock = *ap->firstblock; 345730f712c9SDave Chinner blen = 0; 345830f712c9SDave Chinner if (nullfb) { 345930f712c9SDave Chinner /* 346030f712c9SDave Chinner * Search for an allocation group with a single extent large 346130f712c9SDave Chinner * enough for the request. If one isn't found, then adjust 346230f712c9SDave Chinner * the minimum allocation size to the largest space found. 346330f712c9SDave Chinner */ 3464292378edSDave Chinner if (xfs_alloc_is_userdata(ap->datatype) && 3465292378edSDave Chinner xfs_inode_is_filestream(ap->ip)) 346630f712c9SDave Chinner error = xfs_bmap_btalloc_filestreams(ap, &args, &blen); 346730f712c9SDave Chinner else 346830f712c9SDave Chinner error = xfs_bmap_btalloc_nullfb(ap, &args, &blen); 346930f712c9SDave Chinner if (error) 347030f712c9SDave Chinner return error; 34713e3673e3SBrian Foster } else if (ap->tp->t_dfops->dop_low) { 347230f712c9SDave Chinner if (xfs_inode_is_filestream(ap->ip)) 347330f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 347430f712c9SDave Chinner else 347530f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 347630f712c9SDave Chinner args.total = args.minlen = ap->minlen; 347730f712c9SDave Chinner } else { 347830f712c9SDave Chinner args.type = XFS_ALLOCTYPE_NEAR_BNO; 347930f712c9SDave Chinner args.total = ap->total; 348030f712c9SDave Chinner args.minlen = ap->minlen; 348130f712c9SDave Chinner } 348230f712c9SDave Chinner /* apply extent size hints if obtained earlier */ 3483493611ebSChristoph Hellwig if (align) { 348430f712c9SDave Chinner args.prod = align; 34850703a8e1SDave Chinner div_u64_rem(ap->offset, args.prod, &args.mod); 34860703a8e1SDave Chinner if (args.mod) 34870703a8e1SDave Chinner args.mod = args.prod - args.mod; 348809cbfeafSKirill A. Shutemov } else if (mp->m_sb.sb_blocksize >= PAGE_SIZE) { 348930f712c9SDave Chinner args.prod = 1; 349030f712c9SDave Chinner args.mod = 0; 349130f712c9SDave Chinner } else { 349209cbfeafSKirill A. Shutemov args.prod = PAGE_SIZE >> mp->m_sb.sb_blocklog; 34930703a8e1SDave Chinner div_u64_rem(ap->offset, args.prod, &args.mod); 34940703a8e1SDave Chinner if (args.mod) 34950703a8e1SDave Chinner args.mod = args.prod - args.mod; 349630f712c9SDave Chinner } 349730f712c9SDave Chinner /* 349830f712c9SDave Chinner * If we are not low on available data blocks, and the 349930f712c9SDave Chinner * underlying logical volume manager is a stripe, and 350030f712c9SDave Chinner * the file offset is zero then try to allocate data 350130f712c9SDave Chinner * blocks on stripe unit boundary. 350230f712c9SDave Chinner * NOTE: ap->aeof is only set if the allocation length 350330f712c9SDave Chinner * is >= the stripe unit and the allocation offset is 350430f712c9SDave Chinner * at the end of file. 350530f712c9SDave Chinner */ 35063e3673e3SBrian Foster if (!ap->tp->t_dfops->dop_low && ap->aeof) { 350730f712c9SDave Chinner if (!ap->offset) { 350830f712c9SDave Chinner args.alignment = stripe_align; 350930f712c9SDave Chinner atype = args.type; 351030f712c9SDave Chinner isaligned = 1; 351130f712c9SDave Chinner /* 351230f712c9SDave Chinner * Adjust for alignment 351330f712c9SDave Chinner */ 351430f712c9SDave Chinner if (blen > args.alignment && blen <= args.maxlen) 351530f712c9SDave Chinner args.minlen = blen - args.alignment; 351630f712c9SDave Chinner args.minalignslop = 0; 351730f712c9SDave Chinner } else { 351830f712c9SDave Chinner /* 351930f712c9SDave Chinner * First try an exact bno allocation. 352030f712c9SDave Chinner * If it fails then do a near or start bno 352130f712c9SDave Chinner * allocation with alignment turned on. 352230f712c9SDave Chinner */ 352330f712c9SDave Chinner atype = args.type; 352430f712c9SDave Chinner tryagain = 1; 352530f712c9SDave Chinner args.type = XFS_ALLOCTYPE_THIS_BNO; 352630f712c9SDave Chinner args.alignment = 1; 352730f712c9SDave Chinner /* 352830f712c9SDave Chinner * Compute the minlen+alignment for the 352930f712c9SDave Chinner * next case. Set slop so that the value 353030f712c9SDave Chinner * of minlen+alignment+slop doesn't go up 353130f712c9SDave Chinner * between the calls. 353230f712c9SDave Chinner */ 353330f712c9SDave Chinner if (blen > stripe_align && blen <= args.maxlen) 353430f712c9SDave Chinner nextminlen = blen - stripe_align; 353530f712c9SDave Chinner else 353630f712c9SDave Chinner nextminlen = args.minlen; 353730f712c9SDave Chinner if (nextminlen + stripe_align > args.minlen + 1) 353830f712c9SDave Chinner args.minalignslop = 353930f712c9SDave Chinner nextminlen + stripe_align - 354030f712c9SDave Chinner args.minlen - 1; 354130f712c9SDave Chinner else 354230f712c9SDave Chinner args.minalignslop = 0; 354330f712c9SDave Chinner } 354430f712c9SDave Chinner } else { 354530f712c9SDave Chinner args.alignment = 1; 354630f712c9SDave Chinner args.minalignslop = 0; 354730f712c9SDave Chinner } 354830f712c9SDave Chinner args.minleft = ap->minleft; 354930f712c9SDave Chinner args.wasdel = ap->wasdel; 35503fd129b6SDarrick J. Wong args.resv = XFS_AG_RESV_NONE; 3551292378edSDave Chinner args.datatype = ap->datatype; 3552292378edSDave Chinner if (ap->datatype & XFS_ALLOC_USERDATA_ZERO) 35533fbbbea3SDave Chinner args.ip = ap->ip; 35543fbbbea3SDave Chinner 35553fbbbea3SDave Chinner error = xfs_alloc_vextent(&args); 35563fbbbea3SDave Chinner if (error) 355730f712c9SDave Chinner return error; 35583fbbbea3SDave Chinner 355930f712c9SDave Chinner if (tryagain && args.fsbno == NULLFSBLOCK) { 356030f712c9SDave Chinner /* 356130f712c9SDave Chinner * Exact allocation failed. Now try with alignment 356230f712c9SDave Chinner * turned on. 356330f712c9SDave Chinner */ 356430f712c9SDave Chinner args.type = atype; 356530f712c9SDave Chinner args.fsbno = ap->blkno; 356630f712c9SDave Chinner args.alignment = stripe_align; 356730f712c9SDave Chinner args.minlen = nextminlen; 356830f712c9SDave Chinner args.minalignslop = 0; 356930f712c9SDave Chinner isaligned = 1; 357030f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 357130f712c9SDave Chinner return error; 357230f712c9SDave Chinner } 357330f712c9SDave Chinner if (isaligned && args.fsbno == NULLFSBLOCK) { 357430f712c9SDave Chinner /* 357530f712c9SDave Chinner * allocation failed, so turn off alignment and 357630f712c9SDave Chinner * try again. 357730f712c9SDave Chinner */ 357830f712c9SDave Chinner args.type = atype; 357930f712c9SDave Chinner args.fsbno = ap->blkno; 358030f712c9SDave Chinner args.alignment = 0; 358130f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 358230f712c9SDave Chinner return error; 358330f712c9SDave Chinner } 358430f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb && 358530f712c9SDave Chinner args.minlen > ap->minlen) { 358630f712c9SDave Chinner args.minlen = ap->minlen; 358730f712c9SDave Chinner args.type = XFS_ALLOCTYPE_START_BNO; 358830f712c9SDave Chinner args.fsbno = ap->blkno; 358930f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 359030f712c9SDave Chinner return error; 359130f712c9SDave Chinner } 359230f712c9SDave Chinner if (args.fsbno == NULLFSBLOCK && nullfb) { 359330f712c9SDave Chinner args.fsbno = 0; 359430f712c9SDave Chinner args.type = XFS_ALLOCTYPE_FIRST_AG; 359530f712c9SDave Chinner args.total = ap->minlen; 359630f712c9SDave Chinner if ((error = xfs_alloc_vextent(&args))) 359730f712c9SDave Chinner return error; 35983e3673e3SBrian Foster ap->tp->t_dfops->dop_low = true; 359930f712c9SDave Chinner } 360030f712c9SDave Chinner if (args.fsbno != NULLFSBLOCK) { 360130f712c9SDave Chinner /* 360230f712c9SDave Chinner * check the allocation happened at the same or higher AG than 360330f712c9SDave Chinner * the first block that was allocated. 360430f712c9SDave Chinner */ 360530f712c9SDave Chinner ASSERT(*ap->firstblock == NULLFSBLOCK || 3606410d17f6SChristoph Hellwig XFS_FSB_TO_AGNO(mp, *ap->firstblock) <= 3607410d17f6SChristoph Hellwig XFS_FSB_TO_AGNO(mp, args.fsbno)); 360830f712c9SDave Chinner 360930f712c9SDave Chinner ap->blkno = args.fsbno; 361030f712c9SDave Chinner if (*ap->firstblock == NULLFSBLOCK) 361130f712c9SDave Chinner *ap->firstblock = args.fsbno; 3612410d17f6SChristoph Hellwig ASSERT(nullfb || fb_agno <= args.agno); 361330f712c9SDave Chinner ap->length = args.len; 36146d8a45ceSDarrick J. Wong /* 36156d8a45ceSDarrick J. Wong * If the extent size hint is active, we tried to round the 36166d8a45ceSDarrick J. Wong * caller's allocation request offset down to extsz and the 36176d8a45ceSDarrick J. Wong * length up to another extsz boundary. If we found a free 36186d8a45ceSDarrick J. Wong * extent we mapped it in starting at this new offset. If the 36196d8a45ceSDarrick J. Wong * newly mapped space isn't long enough to cover any of the 36206d8a45ceSDarrick J. Wong * range of offsets that was originally requested, move the 36216d8a45ceSDarrick J. Wong * mapping up so that we can fill as much of the caller's 36226d8a45ceSDarrick J. Wong * original request as possible. Free space is apparently 36236d8a45ceSDarrick J. Wong * very fragmented so we're unlikely to be able to satisfy the 36246d8a45ceSDarrick J. Wong * hints anyway. 36256d8a45ceSDarrick J. Wong */ 36266d8a45ceSDarrick J. Wong if (ap->length <= orig_length) 36276d8a45ceSDarrick J. Wong ap->offset = orig_offset; 36286d8a45ceSDarrick J. Wong else if (ap->offset + ap->length < orig_offset + orig_length) 36296d8a45ceSDarrick J. Wong ap->offset = orig_offset + orig_length - ap->length; 3630751f3767SDarrick J. Wong xfs_bmap_btalloc_accounting(ap, &args); 363130f712c9SDave Chinner } else { 363230f712c9SDave Chinner ap->blkno = NULLFSBLOCK; 363330f712c9SDave Chinner ap->length = 0; 363430f712c9SDave Chinner } 363530f712c9SDave Chinner return 0; 363630f712c9SDave Chinner } 363730f712c9SDave Chinner 363830f712c9SDave Chinner /* 363930f712c9SDave Chinner * xfs_bmap_alloc is called by xfs_bmapi to allocate an extent for a file. 364030f712c9SDave Chinner * It figures out where to ask the underlying allocator to put the new extent. 364130f712c9SDave Chinner */ 364230f712c9SDave Chinner STATIC int 364330f712c9SDave Chinner xfs_bmap_alloc( 364430f712c9SDave Chinner struct xfs_bmalloca *ap) /* bmap alloc argument struct */ 364530f712c9SDave Chinner { 3646292378edSDave Chinner if (XFS_IS_REALTIME_INODE(ap->ip) && 3647292378edSDave Chinner xfs_alloc_is_userdata(ap->datatype)) 364830f712c9SDave Chinner return xfs_bmap_rtalloc(ap); 364930f712c9SDave Chinner return xfs_bmap_btalloc(ap); 365030f712c9SDave Chinner } 365130f712c9SDave Chinner 36520a0af28cSDarrick J. Wong /* Trim extent to fit a logical block range. */ 36530a0af28cSDarrick J. Wong void 36540a0af28cSDarrick J. Wong xfs_trim_extent( 36550a0af28cSDarrick J. Wong struct xfs_bmbt_irec *irec, 36560a0af28cSDarrick J. Wong xfs_fileoff_t bno, 36570a0af28cSDarrick J. Wong xfs_filblks_t len) 36580a0af28cSDarrick J. Wong { 36590a0af28cSDarrick J. Wong xfs_fileoff_t distance; 36600a0af28cSDarrick J. Wong xfs_fileoff_t end = bno + len; 36610a0af28cSDarrick J. Wong 36620a0af28cSDarrick J. Wong if (irec->br_startoff + irec->br_blockcount <= bno || 36630a0af28cSDarrick J. Wong irec->br_startoff >= end) { 36640a0af28cSDarrick J. Wong irec->br_blockcount = 0; 36650a0af28cSDarrick J. Wong return; 36660a0af28cSDarrick J. Wong } 36670a0af28cSDarrick J. Wong 36680a0af28cSDarrick J. Wong if (irec->br_startoff < bno) { 36690a0af28cSDarrick J. Wong distance = bno - irec->br_startoff; 36700a0af28cSDarrick J. Wong if (isnullstartblock(irec->br_startblock)) 36710a0af28cSDarrick J. Wong irec->br_startblock = DELAYSTARTBLOCK; 36720a0af28cSDarrick J. Wong if (irec->br_startblock != DELAYSTARTBLOCK && 36730a0af28cSDarrick J. Wong irec->br_startblock != HOLESTARTBLOCK) 36740a0af28cSDarrick J. Wong irec->br_startblock += distance; 36750a0af28cSDarrick J. Wong irec->br_startoff += distance; 36760a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 36770a0af28cSDarrick J. Wong } 36780a0af28cSDarrick J. Wong 36790a0af28cSDarrick J. Wong if (end < irec->br_startoff + irec->br_blockcount) { 36800a0af28cSDarrick J. Wong distance = irec->br_startoff + irec->br_blockcount - end; 36810a0af28cSDarrick J. Wong irec->br_blockcount -= distance; 36820a0af28cSDarrick J. Wong } 36830a0af28cSDarrick J. Wong } 36840a0af28cSDarrick J. Wong 368540214d12SBrian Foster /* trim extent to within eof */ 368640214d12SBrian Foster void 368740214d12SBrian Foster xfs_trim_extent_eof( 368840214d12SBrian Foster struct xfs_bmbt_irec *irec, 368940214d12SBrian Foster struct xfs_inode *ip) 369040214d12SBrian Foster 369140214d12SBrian Foster { 369240214d12SBrian Foster xfs_trim_extent(irec, 0, XFS_B_TO_FSB(ip->i_mount, 369340214d12SBrian Foster i_size_read(VFS_I(ip)))); 369440214d12SBrian Foster } 369540214d12SBrian Foster 369630f712c9SDave Chinner /* 369730f712c9SDave Chinner * Trim the returned map to the required bounds 369830f712c9SDave Chinner */ 369930f712c9SDave Chinner STATIC void 370030f712c9SDave Chinner xfs_bmapi_trim_map( 370130f712c9SDave Chinner struct xfs_bmbt_irec *mval, 370230f712c9SDave Chinner struct xfs_bmbt_irec *got, 370330f712c9SDave Chinner xfs_fileoff_t *bno, 370430f712c9SDave Chinner xfs_filblks_t len, 370530f712c9SDave Chinner xfs_fileoff_t obno, 370630f712c9SDave Chinner xfs_fileoff_t end, 370730f712c9SDave Chinner int n, 370830f712c9SDave Chinner int flags) 370930f712c9SDave Chinner { 371030f712c9SDave Chinner if ((flags & XFS_BMAPI_ENTIRE) || 371130f712c9SDave Chinner got->br_startoff + got->br_blockcount <= obno) { 371230f712c9SDave Chinner *mval = *got; 371330f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 371430f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 371530f712c9SDave Chinner return; 371630f712c9SDave Chinner } 371730f712c9SDave Chinner 371830f712c9SDave Chinner if (obno > *bno) 371930f712c9SDave Chinner *bno = obno; 372030f712c9SDave Chinner ASSERT((*bno >= obno) || (n == 0)); 372130f712c9SDave Chinner ASSERT(*bno < end); 372230f712c9SDave Chinner mval->br_startoff = *bno; 372330f712c9SDave Chinner if (isnullstartblock(got->br_startblock)) 372430f712c9SDave Chinner mval->br_startblock = DELAYSTARTBLOCK; 372530f712c9SDave Chinner else 372630f712c9SDave Chinner mval->br_startblock = got->br_startblock + 372730f712c9SDave Chinner (*bno - got->br_startoff); 372830f712c9SDave Chinner /* 372930f712c9SDave Chinner * Return the minimum of what we got and what we asked for for 373030f712c9SDave Chinner * the length. We can use the len variable here because it is 373130f712c9SDave Chinner * modified below and we could have been there before coming 373230f712c9SDave Chinner * here if the first part of the allocation didn't overlap what 373330f712c9SDave Chinner * was asked for. 373430f712c9SDave Chinner */ 373530f712c9SDave Chinner mval->br_blockcount = XFS_FILBLKS_MIN(end - *bno, 373630f712c9SDave Chinner got->br_blockcount - (*bno - got->br_startoff)); 373730f712c9SDave Chinner mval->br_state = got->br_state; 373830f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 373930f712c9SDave Chinner return; 374030f712c9SDave Chinner } 374130f712c9SDave Chinner 374230f712c9SDave Chinner /* 374330f712c9SDave Chinner * Update and validate the extent map to return 374430f712c9SDave Chinner */ 374530f712c9SDave Chinner STATIC void 374630f712c9SDave Chinner xfs_bmapi_update_map( 374730f712c9SDave Chinner struct xfs_bmbt_irec **map, 374830f712c9SDave Chinner xfs_fileoff_t *bno, 374930f712c9SDave Chinner xfs_filblks_t *len, 375030f712c9SDave Chinner xfs_fileoff_t obno, 375130f712c9SDave Chinner xfs_fileoff_t end, 375230f712c9SDave Chinner int *n, 375330f712c9SDave Chinner int flags) 375430f712c9SDave Chinner { 375530f712c9SDave Chinner xfs_bmbt_irec_t *mval = *map; 375630f712c9SDave Chinner 375730f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || 375830f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= end)); 375930f712c9SDave Chinner ASSERT((flags & XFS_BMAPI_ENTIRE) || (mval->br_blockcount <= *len) || 376030f712c9SDave Chinner (mval->br_startoff < obno)); 376130f712c9SDave Chinner 376230f712c9SDave Chinner *bno = mval->br_startoff + mval->br_blockcount; 376330f712c9SDave Chinner *len = end - *bno; 376430f712c9SDave Chinner if (*n > 0 && mval->br_startoff == mval[-1].br_startoff) { 376530f712c9SDave Chinner /* update previous map with new information */ 376630f712c9SDave Chinner ASSERT(mval->br_startblock == mval[-1].br_startblock); 376730f712c9SDave Chinner ASSERT(mval->br_blockcount > mval[-1].br_blockcount); 376830f712c9SDave Chinner ASSERT(mval->br_state == mval[-1].br_state); 376930f712c9SDave Chinner mval[-1].br_blockcount = mval->br_blockcount; 377030f712c9SDave Chinner mval[-1].br_state = mval->br_state; 377130f712c9SDave Chinner } else if (*n > 0 && mval->br_startblock != DELAYSTARTBLOCK && 377230f712c9SDave Chinner mval[-1].br_startblock != DELAYSTARTBLOCK && 377330f712c9SDave Chinner mval[-1].br_startblock != HOLESTARTBLOCK && 377430f712c9SDave Chinner mval->br_startblock == mval[-1].br_startblock + 377530f712c9SDave Chinner mval[-1].br_blockcount && 3776c3a2f9ffSChristoph Hellwig mval[-1].br_state == mval->br_state) { 377730f712c9SDave Chinner ASSERT(mval->br_startoff == 377830f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount); 377930f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 378030f712c9SDave Chinner } else if (*n > 0 && 378130f712c9SDave Chinner mval->br_startblock == DELAYSTARTBLOCK && 378230f712c9SDave Chinner mval[-1].br_startblock == DELAYSTARTBLOCK && 378330f712c9SDave Chinner mval->br_startoff == 378430f712c9SDave Chinner mval[-1].br_startoff + mval[-1].br_blockcount) { 378530f712c9SDave Chinner mval[-1].br_blockcount += mval->br_blockcount; 378630f712c9SDave Chinner mval[-1].br_state = mval->br_state; 378730f712c9SDave Chinner } else if (!((*n == 0) && 378830f712c9SDave Chinner ((mval->br_startoff + mval->br_blockcount) <= 378930f712c9SDave Chinner obno))) { 379030f712c9SDave Chinner mval++; 379130f712c9SDave Chinner (*n)++; 379230f712c9SDave Chinner } 379330f712c9SDave Chinner *map = mval; 379430f712c9SDave Chinner } 379530f712c9SDave Chinner 379630f712c9SDave Chinner /* 379730f712c9SDave Chinner * Map file blocks to filesystem blocks without allocation. 379830f712c9SDave Chinner */ 379930f712c9SDave Chinner int 380030f712c9SDave Chinner xfs_bmapi_read( 380130f712c9SDave Chinner struct xfs_inode *ip, 380230f712c9SDave Chinner xfs_fileoff_t bno, 380330f712c9SDave Chinner xfs_filblks_t len, 380430f712c9SDave Chinner struct xfs_bmbt_irec *mval, 380530f712c9SDave Chinner int *nmap, 380630f712c9SDave Chinner int flags) 380730f712c9SDave Chinner { 380830f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 380930f712c9SDave Chinner struct xfs_ifork *ifp; 381030f712c9SDave Chinner struct xfs_bmbt_irec got; 381130f712c9SDave Chinner xfs_fileoff_t obno; 381230f712c9SDave Chinner xfs_fileoff_t end; 3813b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 381430f712c9SDave Chinner int error; 3815334f3423SChristoph Hellwig bool eof = false; 381630f712c9SDave Chinner int n = 0; 38173993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 381830f712c9SDave Chinner 381930f712c9SDave Chinner ASSERT(*nmap >= 1); 382030f712c9SDave Chinner ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK|XFS_BMAPI_ENTIRE| 3821c3a2f9ffSChristoph Hellwig XFS_BMAPI_COWFORK))); 382230f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_SHARED|XFS_ILOCK_EXCL)); 382330f712c9SDave Chinner 382430f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 382530f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 382630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 38279e24cfd0SDarrick J. Wong mp, XFS_ERRTAG_BMAPIFORMAT))) { 382830f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_read", XFS_ERRLEVEL_LOW, mp); 38292451337dSDave Chinner return -EFSCORRUPTED; 383030f712c9SDave Chinner } 383130f712c9SDave Chinner 383230f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 38332451337dSDave Chinner return -EIO; 383430f712c9SDave Chinner 3835ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapr); 383630f712c9SDave Chinner 383730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 383830f712c9SDave Chinner 38393993baebSDarrick J. Wong /* No CoW fork? Return a hole. */ 38403993baebSDarrick J. Wong if (whichfork == XFS_COW_FORK && !ifp) { 38413993baebSDarrick J. Wong mval->br_startoff = bno; 38423993baebSDarrick J. Wong mval->br_startblock = HOLESTARTBLOCK; 38433993baebSDarrick J. Wong mval->br_blockcount = len; 38443993baebSDarrick J. Wong mval->br_state = XFS_EXT_NORM; 38453993baebSDarrick J. Wong *nmap = 1; 38463993baebSDarrick J. Wong return 0; 38473993baebSDarrick J. Wong } 38483993baebSDarrick J. Wong 384930f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 385030f712c9SDave Chinner error = xfs_iread_extents(NULL, ip, whichfork); 385130f712c9SDave Chinner if (error) 385230f712c9SDave Chinner return error; 385330f712c9SDave Chinner } 385430f712c9SDave Chinner 3855b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) 3856334f3423SChristoph Hellwig eof = true; 385730f712c9SDave Chinner end = bno + len; 385830f712c9SDave Chinner obno = bno; 385930f712c9SDave Chinner 386030f712c9SDave Chinner while (bno < end && n < *nmap) { 386130f712c9SDave Chinner /* Reading past eof, act as though there's a hole up to end. */ 386230f712c9SDave Chinner if (eof) 386330f712c9SDave Chinner got.br_startoff = end; 386430f712c9SDave Chinner if (got.br_startoff > bno) { 386530f712c9SDave Chinner /* Reading in a hole. */ 386630f712c9SDave Chinner mval->br_startoff = bno; 386730f712c9SDave Chinner mval->br_startblock = HOLESTARTBLOCK; 386830f712c9SDave Chinner mval->br_blockcount = 386930f712c9SDave Chinner XFS_FILBLKS_MIN(len, got.br_startoff - bno); 387030f712c9SDave Chinner mval->br_state = XFS_EXT_NORM; 387130f712c9SDave Chinner bno += mval->br_blockcount; 387230f712c9SDave Chinner len -= mval->br_blockcount; 387330f712c9SDave Chinner mval++; 387430f712c9SDave Chinner n++; 387530f712c9SDave Chinner continue; 387630f712c9SDave Chinner } 387730f712c9SDave Chinner 387830f712c9SDave Chinner /* set up the extent map to return. */ 387930f712c9SDave Chinner xfs_bmapi_trim_map(mval, &got, &bno, len, obno, end, n, flags); 388030f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 388130f712c9SDave Chinner 388230f712c9SDave Chinner /* If we're done, stop now. */ 388330f712c9SDave Chinner if (bno >= end || n >= *nmap) 388430f712c9SDave Chinner break; 388530f712c9SDave Chinner 388630f712c9SDave Chinner /* Else go on to the next record. */ 3887b2b1712aSChristoph Hellwig if (!xfs_iext_next_extent(ifp, &icur, &got)) 3888334f3423SChristoph Hellwig eof = true; 388930f712c9SDave Chinner } 389030f712c9SDave Chinner *nmap = n; 389130f712c9SDave Chinner return 0; 389230f712c9SDave Chinner } 389330f712c9SDave Chinner 3894f65e6fadSBrian Foster /* 3895f65e6fadSBrian Foster * Add a delayed allocation extent to an inode. Blocks are reserved from the 3896f65e6fadSBrian Foster * global pool and the extent inserted into the inode in-core extent tree. 3897f65e6fadSBrian Foster * 3898f65e6fadSBrian Foster * On entry, got refers to the first extent beyond the offset of the extent to 3899f65e6fadSBrian Foster * allocate or eof is specified if no such extent exists. On return, got refers 3900f65e6fadSBrian Foster * to the extent record that was inserted to the inode fork. 3901f65e6fadSBrian Foster * 3902f65e6fadSBrian Foster * Note that the allocated extent may have been merged with contiguous extents 3903f65e6fadSBrian Foster * during insertion into the inode fork. Thus, got does not reflect the current 3904f65e6fadSBrian Foster * state of the inode fork on return. If necessary, the caller can use lastx to 3905f65e6fadSBrian Foster * look up the updated record in the inode fork. 3906f65e6fadSBrian Foster */ 390751446f5bSChristoph Hellwig int 390830f712c9SDave Chinner xfs_bmapi_reserve_delalloc( 390930f712c9SDave Chinner struct xfs_inode *ip, 3910be51f811SDarrick J. Wong int whichfork, 3911974ae922SBrian Foster xfs_fileoff_t off, 391230f712c9SDave Chinner xfs_filblks_t len, 3913974ae922SBrian Foster xfs_filblks_t prealloc, 391430f712c9SDave Chinner struct xfs_bmbt_irec *got, 3915b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 391630f712c9SDave Chinner int eof) 391730f712c9SDave Chinner { 391830f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 3919be51f811SDarrick J. Wong struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 392030f712c9SDave Chinner xfs_extlen_t alen; 392130f712c9SDave Chinner xfs_extlen_t indlen; 392230f712c9SDave Chinner int error; 3923974ae922SBrian Foster xfs_fileoff_t aoff = off; 392430f712c9SDave Chinner 3925974ae922SBrian Foster /* 3926974ae922SBrian Foster * Cap the alloc length. Keep track of prealloc so we know whether to 3927974ae922SBrian Foster * tag the inode before we return. 3928974ae922SBrian Foster */ 3929974ae922SBrian Foster alen = XFS_FILBLKS_MIN(len + prealloc, MAXEXTLEN); 393030f712c9SDave Chinner if (!eof) 393130f712c9SDave Chinner alen = XFS_FILBLKS_MIN(alen, got->br_startoff - aoff); 3932974ae922SBrian Foster if (prealloc && alen >= len) 3933974ae922SBrian Foster prealloc = alen - len; 393430f712c9SDave Chinner 393530f712c9SDave Chinner /* Figure out the extent size, adjust alen */ 39366ca30729SShan Hai if (whichfork == XFS_COW_FORK) { 393765c5f419SChristoph Hellwig struct xfs_bmbt_irec prev; 39386ca30729SShan Hai xfs_extlen_t extsz = xfs_get_cowextsz_hint(ip); 393965c5f419SChristoph Hellwig 3940b2b1712aSChristoph Hellwig if (!xfs_iext_peek_prev_extent(ifp, icur, &prev)) 394165c5f419SChristoph Hellwig prev.br_startoff = NULLFILEOFF; 394265c5f419SChristoph Hellwig 39436ca30729SShan Hai error = xfs_bmap_extsize_align(mp, got, &prev, extsz, 0, eof, 394430f712c9SDave Chinner 1, 0, &aoff, &alen); 394530f712c9SDave Chinner ASSERT(!error); 394630f712c9SDave Chinner } 394730f712c9SDave Chinner 394830f712c9SDave Chinner /* 394930f712c9SDave Chinner * Make a transaction-less quota reservation for delayed allocation 395030f712c9SDave Chinner * blocks. This number gets adjusted later. We return if we haven't 395130f712c9SDave Chinner * allocated blocks already inside this loop. 395230f712c9SDave Chinner */ 395330f712c9SDave Chinner error = xfs_trans_reserve_quota_nblks(NULL, ip, (long)alen, 0, 39546ca30729SShan Hai XFS_QMOPT_RES_REGBLKS); 395530f712c9SDave Chinner if (error) 395630f712c9SDave Chinner return error; 395730f712c9SDave Chinner 395830f712c9SDave Chinner /* 395930f712c9SDave Chinner * Split changing sb for alen and indlen since they could be coming 396030f712c9SDave Chinner * from different places. 396130f712c9SDave Chinner */ 396230f712c9SDave Chinner indlen = (xfs_extlen_t)xfs_bmap_worst_indlen(ip, alen); 396330f712c9SDave Chinner ASSERT(indlen > 0); 396430f712c9SDave Chinner 39650d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)alen), false); 396630f712c9SDave Chinner if (error) 396730f712c9SDave Chinner goto out_unreserve_quota; 396830f712c9SDave Chinner 39690d485adaSDave Chinner error = xfs_mod_fdblocks(mp, -((int64_t)indlen), false); 397030f712c9SDave Chinner if (error) 397130f712c9SDave Chinner goto out_unreserve_blocks; 397230f712c9SDave Chinner 397330f712c9SDave Chinner 397430f712c9SDave Chinner ip->i_delayed_blks += alen; 397530f712c9SDave Chinner 397630f712c9SDave Chinner got->br_startoff = aoff; 397730f712c9SDave Chinner got->br_startblock = nullstartblock(indlen); 397830f712c9SDave Chinner got->br_blockcount = alen; 397930f712c9SDave Chinner got->br_state = XFS_EXT_NORM; 398030f712c9SDave Chinner 3981b2b1712aSChristoph Hellwig xfs_bmap_add_extent_hole_delay(ip, whichfork, icur, got); 398230f712c9SDave Chinner 3983974ae922SBrian Foster /* 3984974ae922SBrian Foster * Tag the inode if blocks were preallocated. Note that COW fork 3985974ae922SBrian Foster * preallocation can occur at the start or end of the extent, even when 3986974ae922SBrian Foster * prealloc == 0, so we must also check the aligned offset and length. 3987974ae922SBrian Foster */ 3988974ae922SBrian Foster if (whichfork == XFS_DATA_FORK && prealloc) 3989974ae922SBrian Foster xfs_inode_set_eofblocks_tag(ip); 3990974ae922SBrian Foster if (whichfork == XFS_COW_FORK && (prealloc || aoff < off || alen > len)) 3991974ae922SBrian Foster xfs_inode_set_cowblocks_tag(ip); 3992974ae922SBrian Foster 399330f712c9SDave Chinner return 0; 399430f712c9SDave Chinner 399530f712c9SDave Chinner out_unreserve_blocks: 39960d485adaSDave Chinner xfs_mod_fdblocks(mp, alen, false); 399730f712c9SDave Chinner out_unreserve_quota: 399830f712c9SDave Chinner if (XFS_IS_QUOTA_ON(mp)) 39996ca30729SShan Hai xfs_trans_unreserve_quota_nblks(NULL, ip, (long)alen, 0, 40006ca30729SShan Hai XFS_QMOPT_RES_REGBLKS); 400130f712c9SDave Chinner return error; 400230f712c9SDave Chinner } 400330f712c9SDave Chinner 40047f8a058fSDave Chinner static int 40057f8a058fSDave Chinner xfs_bmapi_allocate( 400630f712c9SDave Chinner struct xfs_bmalloca *bma) 400730f712c9SDave Chinner { 400830f712c9SDave Chinner struct xfs_mount *mp = bma->ip->i_mount; 400960b4984fSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(bma->flags); 401030f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 401130f712c9SDave Chinner int tmp_logflags = 0; 401230f712c9SDave Chinner int error; 401330f712c9SDave Chinner 401430f712c9SDave Chinner ASSERT(bma->length > 0); 401530f712c9SDave Chinner 401630f712c9SDave Chinner /* 401730f712c9SDave Chinner * For the wasdelay case, we could also just allocate the stuff asked 401830f712c9SDave Chinner * for in this bmap call but that wouldn't be as good. 401930f712c9SDave Chinner */ 402030f712c9SDave Chinner if (bma->wasdel) { 402130f712c9SDave Chinner bma->length = (xfs_extlen_t)bma->got.br_blockcount; 402230f712c9SDave Chinner bma->offset = bma->got.br_startoff; 4023b2b1712aSChristoph Hellwig xfs_iext_peek_prev_extent(ifp, &bma->icur, &bma->prev); 402430f712c9SDave Chinner } else { 402530f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, MAXEXTLEN); 402630f712c9SDave Chinner if (!bma->eof) 402730f712c9SDave Chinner bma->length = XFS_FILBLKS_MIN(bma->length, 402830f712c9SDave Chinner bma->got.br_startoff - bma->offset); 402930f712c9SDave Chinner } 403030f712c9SDave Chinner 403130f712c9SDave Chinner /* 4032292378edSDave Chinner * Set the data type being allocated. For the data fork, the first data 4033292378edSDave Chinner * in the file is treated differently to all other allocations. For the 4034292378edSDave Chinner * attribute fork, we only need to ensure the allocated range is not on 4035292378edSDave Chinner * the busy list. 403630f712c9SDave Chinner */ 403730f712c9SDave Chinner if (!(bma->flags & XFS_BMAPI_METADATA)) { 4038292378edSDave Chinner bma->datatype = XFS_ALLOC_NOBUSY; 4039292378edSDave Chinner if (whichfork == XFS_DATA_FORK) { 4040292378edSDave Chinner if (bma->offset == 0) 4041292378edSDave Chinner bma->datatype |= XFS_ALLOC_INITIAL_USER_DATA; 4042292378edSDave Chinner else 4043292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA; 4044292378edSDave Chinner } 40453fbbbea3SDave Chinner if (bma->flags & XFS_BMAPI_ZERO) 4046292378edSDave Chinner bma->datatype |= XFS_ALLOC_USERDATA_ZERO; 404730f712c9SDave Chinner } 404830f712c9SDave Chinner 404930f712c9SDave Chinner bma->minlen = (bma->flags & XFS_BMAPI_CONTIG) ? bma->length : 1; 405030f712c9SDave Chinner 405130f712c9SDave Chinner /* 405230f712c9SDave Chinner * Only want to do the alignment at the eof if it is userdata and 405330f712c9SDave Chinner * allocation length is larger than a stripe unit. 405430f712c9SDave Chinner */ 405530f712c9SDave Chinner if (mp->m_dalign && bma->length >= mp->m_dalign && 405630f712c9SDave Chinner !(bma->flags & XFS_BMAPI_METADATA) && whichfork == XFS_DATA_FORK) { 405730f712c9SDave Chinner error = xfs_bmap_isaeof(bma, whichfork); 405830f712c9SDave Chinner if (error) 405930f712c9SDave Chinner return error; 406030f712c9SDave Chinner } 406130f712c9SDave Chinner 406230f712c9SDave Chinner error = xfs_bmap_alloc(bma); 406330f712c9SDave Chinner if (error) 406430f712c9SDave Chinner return error; 406530f712c9SDave Chinner 406630f712c9SDave Chinner if (bma->cur) 406730f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 406830f712c9SDave Chinner if (bma->blkno == NULLFSBLOCK) 406930f712c9SDave Chinner return 0; 407030f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 407130f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(mp, bma->tp, bma->ip, whichfork); 407230f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 407330f712c9SDave Chinner } 407430f712c9SDave Chinner /* 407530f712c9SDave Chinner * Bump the number of extents we've allocated 407630f712c9SDave Chinner * in this call. 407730f712c9SDave Chinner */ 407830f712c9SDave Chinner bma->nallocs++; 407930f712c9SDave Chinner 408030f712c9SDave Chinner if (bma->cur) 408130f712c9SDave Chinner bma->cur->bc_private.b.flags = 408230f712c9SDave Chinner bma->wasdel ? XFS_BTCUR_BPRV_WASDEL : 0; 408330f712c9SDave Chinner 408430f712c9SDave Chinner bma->got.br_startoff = bma->offset; 408530f712c9SDave Chinner bma->got.br_startblock = bma->blkno; 408630f712c9SDave Chinner bma->got.br_blockcount = bma->length; 408730f712c9SDave Chinner bma->got.br_state = XFS_EXT_NORM; 408830f712c9SDave Chinner 408930f712c9SDave Chinner /* 409005a630d7SDarrick J. Wong * In the data fork, a wasdelay extent has been initialized, so 409105a630d7SDarrick J. Wong * shouldn't be flagged as unwritten. 409205a630d7SDarrick J. Wong * 409305a630d7SDarrick J. Wong * For the cow fork, however, we convert delalloc reservations 409405a630d7SDarrick J. Wong * (extents allocated for speculative preallocation) to 409505a630d7SDarrick J. Wong * allocated unwritten extents, and only convert the unwritten 409605a630d7SDarrick J. Wong * extents to real extents when we're about to write the data. 409730f712c9SDave Chinner */ 409805a630d7SDarrick J. Wong if ((!bma->wasdel || (bma->flags & XFS_BMAPI_COWFORK)) && 409905a630d7SDarrick J. Wong (bma->flags & XFS_BMAPI_PREALLOC) && 410030f712c9SDave Chinner xfs_sb_version_hasextflgbit(&mp->m_sb)) 410130f712c9SDave Chinner bma->got.br_state = XFS_EXT_UNWRITTEN; 410230f712c9SDave Chinner 410330f712c9SDave Chinner if (bma->wasdel) 410460b4984fSDarrick J. Wong error = xfs_bmap_add_extent_delay_real(bma, whichfork); 410530f712c9SDave Chinner else 41066d04558fSChristoph Hellwig error = xfs_bmap_add_extent_hole_real(bma->tp, bma->ip, 4107b2b1712aSChristoph Hellwig whichfork, &bma->icur, &bma->cur, &bma->got, 410881ba8f3eSBrian Foster bma->firstblock, &bma->logflags, bma->flags); 410930f712c9SDave Chinner 411030f712c9SDave Chinner bma->logflags |= tmp_logflags; 411130f712c9SDave Chinner if (error) 411230f712c9SDave Chinner return error; 411330f712c9SDave Chinner 411430f712c9SDave Chinner /* 411530f712c9SDave Chinner * Update our extent pointer, given that xfs_bmap_add_extent_delay_real 411630f712c9SDave Chinner * or xfs_bmap_add_extent_hole_real might have merged it into one of 411730f712c9SDave Chinner * the neighbouring ones. 411830f712c9SDave Chinner */ 4119b2b1712aSChristoph Hellwig xfs_iext_get_extent(ifp, &bma->icur, &bma->got); 412030f712c9SDave Chinner 412130f712c9SDave Chinner ASSERT(bma->got.br_startoff <= bma->offset); 412230f712c9SDave Chinner ASSERT(bma->got.br_startoff + bma->got.br_blockcount >= 412330f712c9SDave Chinner bma->offset + bma->length); 412430f712c9SDave Chinner ASSERT(bma->got.br_state == XFS_EXT_NORM || 412530f712c9SDave Chinner bma->got.br_state == XFS_EXT_UNWRITTEN); 412630f712c9SDave Chinner return 0; 412730f712c9SDave Chinner } 412830f712c9SDave Chinner 412930f712c9SDave Chinner STATIC int 413030f712c9SDave Chinner xfs_bmapi_convert_unwritten( 413130f712c9SDave Chinner struct xfs_bmalloca *bma, 413230f712c9SDave Chinner struct xfs_bmbt_irec *mval, 413330f712c9SDave Chinner xfs_filblks_t len, 413430f712c9SDave Chinner int flags) 413530f712c9SDave Chinner { 41363993baebSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 413730f712c9SDave Chinner struct xfs_ifork *ifp = XFS_IFORK_PTR(bma->ip, whichfork); 413830f712c9SDave Chinner int tmp_logflags = 0; 413930f712c9SDave Chinner int error; 414030f712c9SDave Chinner 414130f712c9SDave Chinner /* check if we need to do unwritten->real conversion */ 414230f712c9SDave Chinner if (mval->br_state == XFS_EXT_UNWRITTEN && 414330f712c9SDave Chinner (flags & XFS_BMAPI_PREALLOC)) 414430f712c9SDave Chinner return 0; 414530f712c9SDave Chinner 414630f712c9SDave Chinner /* check if we need to do real->unwritten conversion */ 414730f712c9SDave Chinner if (mval->br_state == XFS_EXT_NORM && 414830f712c9SDave Chinner (flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) != 414930f712c9SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_CONVERT)) 415030f712c9SDave Chinner return 0; 415130f712c9SDave Chinner 415230f712c9SDave Chinner /* 415330f712c9SDave Chinner * Modify (by adding) the state flag, if writing. 415430f712c9SDave Chinner */ 415530f712c9SDave Chinner ASSERT(mval->br_blockcount <= len); 415630f712c9SDave Chinner if ((ifp->if_flags & XFS_IFBROOT) && !bma->cur) { 415730f712c9SDave Chinner bma->cur = xfs_bmbt_init_cursor(bma->ip->i_mount, bma->tp, 415830f712c9SDave Chinner bma->ip, whichfork); 415930f712c9SDave Chinner bma->cur->bc_private.b.firstblock = *bma->firstblock; 416030f712c9SDave Chinner } 416130f712c9SDave Chinner mval->br_state = (mval->br_state == XFS_EXT_UNWRITTEN) 416230f712c9SDave Chinner ? XFS_EXT_NORM : XFS_EXT_UNWRITTEN; 416330f712c9SDave Chinner 41643fbbbea3SDave Chinner /* 41653fbbbea3SDave Chinner * Before insertion into the bmbt, zero the range being converted 41663fbbbea3SDave Chinner * if required. 41673fbbbea3SDave Chinner */ 41683fbbbea3SDave Chinner if (flags & XFS_BMAPI_ZERO) { 41693fbbbea3SDave Chinner error = xfs_zero_extent(bma->ip, mval->br_startblock, 41703fbbbea3SDave Chinner mval->br_blockcount); 41713fbbbea3SDave Chinner if (error) 41723fbbbea3SDave Chinner return error; 41733fbbbea3SDave Chinner } 41743fbbbea3SDave Chinner 417505a630d7SDarrick J. Wong error = xfs_bmap_add_extent_unwritten_real(bma->tp, bma->ip, whichfork, 4176b2b1712aSChristoph Hellwig &bma->icur, &bma->cur, mval, bma->firstblock, 417781ba8f3eSBrian Foster &tmp_logflags); 41782e588a46SBrian Foster /* 41792e588a46SBrian Foster * Log the inode core unconditionally in the unwritten extent conversion 41802e588a46SBrian Foster * path because the conversion might not have done so (e.g., if the 41812e588a46SBrian Foster * extent count hasn't changed). We need to make sure the inode is dirty 41822e588a46SBrian Foster * in the transaction for the sake of fsync(), even if nothing has 41832e588a46SBrian Foster * changed, because fsync() will not force the log for this transaction 41842e588a46SBrian Foster * unless it sees the inode pinned. 418505a630d7SDarrick J. Wong * 418605a630d7SDarrick J. Wong * Note: If we're only converting cow fork extents, there aren't 418705a630d7SDarrick J. Wong * any on-disk updates to make, so we don't need to log anything. 41882e588a46SBrian Foster */ 418905a630d7SDarrick J. Wong if (whichfork != XFS_COW_FORK) 41902e588a46SBrian Foster bma->logflags |= tmp_logflags | XFS_ILOG_CORE; 419130f712c9SDave Chinner if (error) 419230f712c9SDave Chinner return error; 419330f712c9SDave Chinner 419430f712c9SDave Chinner /* 419530f712c9SDave Chinner * Update our extent pointer, given that 419630f712c9SDave Chinner * xfs_bmap_add_extent_unwritten_real might have merged it into one 419730f712c9SDave Chinner * of the neighbouring ones. 419830f712c9SDave Chinner */ 4199b2b1712aSChristoph Hellwig xfs_iext_get_extent(ifp, &bma->icur, &bma->got); 420030f712c9SDave Chinner 420130f712c9SDave Chinner /* 420230f712c9SDave Chinner * We may have combined previously unwritten space with written space, 420330f712c9SDave Chinner * so generate another request. 420430f712c9SDave Chinner */ 420530f712c9SDave Chinner if (mval->br_blockcount < len) 42062451337dSDave Chinner return -EAGAIN; 420730f712c9SDave Chinner return 0; 420830f712c9SDave Chinner } 420930f712c9SDave Chinner 421030f712c9SDave Chinner /* 421130f712c9SDave Chinner * Map file blocks to filesystem blocks, and allocate blocks or convert the 421230f712c9SDave Chinner * extent state if necessary. Details behaviour is controlled by the flags 421330f712c9SDave Chinner * parameter. Only allocates blocks from a single allocation group, to avoid 421430f712c9SDave Chinner * locking problems. 421530f712c9SDave Chinner */ 421630f712c9SDave Chinner int 421730f712c9SDave Chinner xfs_bmapi_write( 421830f712c9SDave Chinner struct xfs_trans *tp, /* transaction pointer */ 421930f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 422030f712c9SDave Chinner xfs_fileoff_t bno, /* starting file offs. mapped */ 422130f712c9SDave Chinner xfs_filblks_t len, /* length to map in file */ 422230f712c9SDave Chinner int flags, /* XFS_BMAPI_... */ 422330f712c9SDave Chinner xfs_extlen_t total, /* total blocks needed */ 422430f712c9SDave Chinner struct xfs_bmbt_irec *mval, /* output: map values */ 42256e702a5dSBrian Foster int *nmap) /* i/o: mval size/count */ 422630f712c9SDave Chinner { 422730f712c9SDave Chinner struct xfs_mount *mp = ip->i_mount; 422830f712c9SDave Chinner struct xfs_ifork *ifp; 422930f712c9SDave Chinner struct xfs_bmalloca bma = { NULL }; /* args for xfs_bmap_alloc */ 423030f712c9SDave Chinner xfs_fileoff_t end; /* end of mapped file region */ 42312d58f6efSChristoph Hellwig bool eof = false; /* after the end of extents */ 423230f712c9SDave Chinner int error; /* error return */ 423330f712c9SDave Chinner int n; /* current extent index */ 423430f712c9SDave Chinner xfs_fileoff_t obno; /* old block number (offset) */ 423530f712c9SDave Chinner int whichfork; /* data or attr fork */ 423630f712c9SDave Chinner 423730f712c9SDave Chinner #ifdef DEBUG 423830f712c9SDave Chinner xfs_fileoff_t orig_bno; /* original block number value */ 423930f712c9SDave Chinner int orig_flags; /* original flags arg value */ 424030f712c9SDave Chinner xfs_filblks_t orig_len; /* original value of len arg */ 424130f712c9SDave Chinner struct xfs_bmbt_irec *orig_mval; /* original value of mval */ 424230f712c9SDave Chinner int orig_nmap; /* original value of *nmap */ 424330f712c9SDave Chinner 424430f712c9SDave Chinner orig_bno = bno; 424530f712c9SDave Chinner orig_len = len; 424630f712c9SDave Chinner orig_flags = flags; 424730f712c9SDave Chinner orig_mval = mval; 424830f712c9SDave Chinner orig_nmap = *nmap; 424930f712c9SDave Chinner #endif 425060b4984fSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 425130f712c9SDave Chinner 425230f712c9SDave Chinner ASSERT(*nmap >= 1); 425330f712c9SDave Chinner ASSERT(*nmap <= XFS_BMAP_MAX_NMAP); 425405a630d7SDarrick J. Wong ASSERT(tp != NULL || 425505a630d7SDarrick J. Wong (flags & (XFS_BMAPI_CONVERT | XFS_BMAPI_COWFORK)) == 425605a630d7SDarrick J. Wong (XFS_BMAPI_CONVERT | XFS_BMAPI_COWFORK)); 425730f712c9SDave Chinner ASSERT(len > 0); 425830f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_LOCAL); 425930f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 42606ebd5a44SChristoph Hellwig ASSERT(!(flags & XFS_BMAPI_REMAP)); 426130f712c9SDave Chinner 42623fbbbea3SDave Chinner /* zeroing is for currently only for data extents, not metadata */ 42633fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)) != 42643fbbbea3SDave Chinner (XFS_BMAPI_METADATA | XFS_BMAPI_ZERO)); 42653fbbbea3SDave Chinner /* 42663fbbbea3SDave Chinner * we can allocate unwritten extents or pre-zero allocated blocks, 42673fbbbea3SDave Chinner * but it makes no sense to do both at once. This would result in 42683fbbbea3SDave Chinner * zeroing the unwritten extent twice, but it still being an 42693fbbbea3SDave Chinner * unwritten extent.... 42703fbbbea3SDave Chinner */ 42713fbbbea3SDave Chinner ASSERT((flags & (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)) != 42723fbbbea3SDave Chinner (XFS_BMAPI_PREALLOC | XFS_BMAPI_ZERO)); 42733fbbbea3SDave Chinner 427430f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 427530f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 427630f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 42779e24cfd0SDarrick J. Wong mp, XFS_ERRTAG_BMAPIFORMAT))) { 427830f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bmapi_write", XFS_ERRLEVEL_LOW, mp); 42792451337dSDave Chinner return -EFSCORRUPTED; 428030f712c9SDave Chinner } 428130f712c9SDave Chinner 428230f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 42832451337dSDave Chinner return -EIO; 428430f712c9SDave Chinner 428530f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 428630f712c9SDave Chinner 4287ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_mapw); 428830f712c9SDave Chinner 4289a7beabeaSBrian Foster if (!tp || tp->t_firstblock == NULLFSBLOCK) { 429030f712c9SDave Chinner if (XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE) 429130f712c9SDave Chinner bma.minleft = be16_to_cpu(ifp->if_broot->bb_level) + 1; 429230f712c9SDave Chinner else 429330f712c9SDave Chinner bma.minleft = 1; 429430f712c9SDave Chinner } else { 429530f712c9SDave Chinner bma.minleft = 0; 429630f712c9SDave Chinner } 429730f712c9SDave Chinner 429830f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 429930f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 430030f712c9SDave Chinner if (error) 430130f712c9SDave Chinner goto error0; 430230f712c9SDave Chinner } 430330f712c9SDave Chinner 430430f712c9SDave Chinner n = 0; 430530f712c9SDave Chinner end = bno + len; 430630f712c9SDave Chinner obno = bno; 430730f712c9SDave Chinner 4308b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, bno, &bma.icur, &bma.got)) 43092d58f6efSChristoph Hellwig eof = true; 4310b2b1712aSChristoph Hellwig if (!xfs_iext_peek_prev_extent(ifp, &bma.icur, &bma.prev)) 43112d58f6efSChristoph Hellwig bma.prev.br_startoff = NULLFILEOFF; 431230f712c9SDave Chinner bma.tp = tp; 431330f712c9SDave Chinner bma.ip = ip; 431430f712c9SDave Chinner bma.total = total; 4315292378edSDave Chinner bma.datatype = 0; 4316a7beabeaSBrian Foster bma.firstblock = &tp->t_firstblock; 43173e3673e3SBrian Foster ASSERT(!tp || tp->t_dfops); 431830f712c9SDave Chinner 431930f712c9SDave Chinner while (bno < end && n < *nmap) { 4320d2b3964aSChristoph Hellwig bool need_alloc = false, wasdelay = false; 432130f712c9SDave Chinner 4322be78ff0eSDarrick J. Wong /* in hole or beyond EOF? */ 4323d2b3964aSChristoph Hellwig if (eof || bma.got.br_startoff > bno) { 4324be78ff0eSDarrick J. Wong /* 4325be78ff0eSDarrick J. Wong * CoW fork conversions should /never/ hit EOF or 4326be78ff0eSDarrick J. Wong * holes. There should always be something for us 4327be78ff0eSDarrick J. Wong * to work on. 4328be78ff0eSDarrick J. Wong */ 4329be78ff0eSDarrick J. Wong ASSERT(!((flags & XFS_BMAPI_CONVERT) && 4330be78ff0eSDarrick J. Wong (flags & XFS_BMAPI_COWFORK))); 4331be78ff0eSDarrick J. Wong 4332d2b3964aSChristoph Hellwig if (flags & XFS_BMAPI_DELALLOC) { 4333d2b3964aSChristoph Hellwig /* 4334d2b3964aSChristoph Hellwig * For the COW fork we can reasonably get a 4335d2b3964aSChristoph Hellwig * request for converting an extent that races 4336d2b3964aSChristoph Hellwig * with other threads already having converted 4337d2b3964aSChristoph Hellwig * part of it, as there converting COW to 4338d2b3964aSChristoph Hellwig * regular blocks is not protected using the 4339d2b3964aSChristoph Hellwig * IOLOCK. 4340d2b3964aSChristoph Hellwig */ 4341d2b3964aSChristoph Hellwig ASSERT(flags & XFS_BMAPI_COWFORK); 4342d2b3964aSChristoph Hellwig if (!(flags & XFS_BMAPI_COWFORK)) { 4343d2b3964aSChristoph Hellwig error = -EIO; 4344d2b3964aSChristoph Hellwig goto error0; 4345d2b3964aSChristoph Hellwig } 4346d2b3964aSChristoph Hellwig 4347d2b3964aSChristoph Hellwig if (eof || bno >= end) 4348d2b3964aSChristoph Hellwig break; 4349d2b3964aSChristoph Hellwig } else { 4350d2b3964aSChristoph Hellwig need_alloc = true; 4351d2b3964aSChristoph Hellwig } 43526ebd5a44SChristoph Hellwig } else if (isnullstartblock(bma.got.br_startblock)) { 4353d2b3964aSChristoph Hellwig wasdelay = true; 4354d2b3964aSChristoph Hellwig } 4355f65306eaSDarrick J. Wong 4356f65306eaSDarrick J. Wong /* 435730f712c9SDave Chinner * First, deal with the hole before the allocated space 435830f712c9SDave Chinner * that we found, if any. 435930f712c9SDave Chinner */ 4360b121459cSChristoph Hellwig if ((need_alloc || wasdelay) && 4361b121459cSChristoph Hellwig !(flags & XFS_BMAPI_CONVERT_ONLY)) { 436230f712c9SDave Chinner bma.eof = eof; 436330f712c9SDave Chinner bma.conv = !!(flags & XFS_BMAPI_CONVERT); 436430f712c9SDave Chinner bma.wasdel = wasdelay; 436530f712c9SDave Chinner bma.offset = bno; 436630f712c9SDave Chinner bma.flags = flags; 436730f712c9SDave Chinner 436830f712c9SDave Chinner /* 436930f712c9SDave Chinner * There's a 32/64 bit type mismatch between the 437030f712c9SDave Chinner * allocation length request (which can be 64 bits in 437130f712c9SDave Chinner * length) and the bma length request, which is 437230f712c9SDave Chinner * xfs_extlen_t and therefore 32 bits. Hence we have to 437330f712c9SDave Chinner * check for 32-bit overflows and handle them here. 437430f712c9SDave Chinner */ 437530f712c9SDave Chinner if (len > (xfs_filblks_t)MAXEXTLEN) 437630f712c9SDave Chinner bma.length = MAXEXTLEN; 437730f712c9SDave Chinner else 437830f712c9SDave Chinner bma.length = len; 437930f712c9SDave Chinner 438030f712c9SDave Chinner ASSERT(len > 0); 438130f712c9SDave Chinner ASSERT(bma.length > 0); 438230f712c9SDave Chinner error = xfs_bmapi_allocate(&bma); 438330f712c9SDave Chinner if (error) 438430f712c9SDave Chinner goto error0; 438530f712c9SDave Chinner if (bma.blkno == NULLFSBLOCK) 438630f712c9SDave Chinner break; 4387174edb0eSDarrick J. Wong 4388174edb0eSDarrick J. Wong /* 4389174edb0eSDarrick J. Wong * If this is a CoW allocation, record the data in 4390174edb0eSDarrick J. Wong * the refcount btree for orphan recovery. 4391174edb0eSDarrick J. Wong */ 4392174edb0eSDarrick J. Wong if (whichfork == XFS_COW_FORK) { 43936e702a5dSBrian Foster error = xfs_refcount_alloc_cow_extent(mp, 43946e702a5dSBrian Foster tp->t_dfops, bma.blkno, 43956e702a5dSBrian Foster bma.length); 4396174edb0eSDarrick J. Wong if (error) 4397174edb0eSDarrick J. Wong goto error0; 4398174edb0eSDarrick J. Wong } 439930f712c9SDave Chinner } 440030f712c9SDave Chinner 440130f712c9SDave Chinner /* Deal with the allocated space we found. */ 440230f712c9SDave Chinner xfs_bmapi_trim_map(mval, &bma.got, &bno, len, obno, 440330f712c9SDave Chinner end, n, flags); 440430f712c9SDave Chinner 440530f712c9SDave Chinner /* Execute unwritten extent conversion if necessary */ 440630f712c9SDave Chinner error = xfs_bmapi_convert_unwritten(&bma, mval, len, flags); 44072451337dSDave Chinner if (error == -EAGAIN) 440830f712c9SDave Chinner continue; 440930f712c9SDave Chinner if (error) 441030f712c9SDave Chinner goto error0; 441130f712c9SDave Chinner 441230f712c9SDave Chinner /* update the extent map to return */ 441330f712c9SDave Chinner xfs_bmapi_update_map(&mval, &bno, &len, obno, end, &n, flags); 441430f712c9SDave Chinner 441530f712c9SDave Chinner /* 441630f712c9SDave Chinner * If we're done, stop now. Stop when we've allocated 441730f712c9SDave Chinner * XFS_BMAP_MAX_NMAP extents no matter what. Otherwise 441830f712c9SDave Chinner * the transaction may get too big. 441930f712c9SDave Chinner */ 442030f712c9SDave Chinner if (bno >= end || n >= *nmap || bma.nallocs >= *nmap) 442130f712c9SDave Chinner break; 442230f712c9SDave Chinner 442330f712c9SDave Chinner /* Else go on to the next record. */ 442430f712c9SDave Chinner bma.prev = bma.got; 4425b2b1712aSChristoph Hellwig if (!xfs_iext_next_extent(ifp, &bma.icur, &bma.got)) 44262d58f6efSChristoph Hellwig eof = true; 442730f712c9SDave Chinner } 442830f712c9SDave Chinner *nmap = n; 442930f712c9SDave Chinner 443030f712c9SDave Chinner /* 443130f712c9SDave Chinner * Transform from btree to extents, give it cur. 443230f712c9SDave Chinner */ 443330f712c9SDave Chinner if (xfs_bmap_wants_extents(ip, whichfork)) { 443430f712c9SDave Chinner int tmp_logflags = 0; 443530f712c9SDave Chinner 443630f712c9SDave Chinner ASSERT(bma.cur); 443730f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, bma.cur, 443830f712c9SDave Chinner &tmp_logflags, whichfork); 443930f712c9SDave Chinner bma.logflags |= tmp_logflags; 444030f712c9SDave Chinner if (error) 444130f712c9SDave Chinner goto error0; 444230f712c9SDave Chinner } 444330f712c9SDave Chinner 444430f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE || 444530f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) > 444630f712c9SDave Chinner XFS_IFORK_MAXEXT(ip, whichfork)); 444730f712c9SDave Chinner error = 0; 444830f712c9SDave Chinner error0: 444930f712c9SDave Chinner /* 445030f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 445130f712c9SDave Chinner * logging the extent records if we've converted to btree format. 445230f712c9SDave Chinner */ 445330f712c9SDave Chinner if ((bma.logflags & xfs_ilog_fext(whichfork)) && 445430f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 445530f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fext(whichfork); 445630f712c9SDave Chinner else if ((bma.logflags & xfs_ilog_fbroot(whichfork)) && 445730f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 445830f712c9SDave Chinner bma.logflags &= ~xfs_ilog_fbroot(whichfork); 445930f712c9SDave Chinner /* 446030f712c9SDave Chinner * Log whatever the flags say, even if error. Otherwise we might miss 446130f712c9SDave Chinner * detecting a case where the data is changed, there's an error, 446230f712c9SDave Chinner * and it's not logged so we don't shutdown when we should. 446330f712c9SDave Chinner */ 446430f712c9SDave Chinner if (bma.logflags) 446530f712c9SDave Chinner xfs_trans_log_inode(tp, ip, bma.logflags); 446630f712c9SDave Chinner 446730f712c9SDave Chinner if (bma.cur) { 446830f712c9SDave Chinner if (!error) { 4469a7beabeaSBrian Foster ASSERT(tp->t_firstblock == NULLFSBLOCK || 4470a7beabeaSBrian Foster XFS_FSB_TO_AGNO(mp, tp->t_firstblock) <= 447130f712c9SDave Chinner XFS_FSB_TO_AGNO(mp, 4472410d17f6SChristoph Hellwig bma.cur->bc_private.b.firstblock)); 4473a7beabeaSBrian Foster tp->t_firstblock = bma.cur->bc_private.b.firstblock; 447430f712c9SDave Chinner } 447530f712c9SDave Chinner xfs_btree_del_cursor(bma.cur, 447630f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 447730f712c9SDave Chinner } 447830f712c9SDave Chinner if (!error) 447930f712c9SDave Chinner xfs_bmap_validate_ret(orig_bno, orig_len, orig_flags, orig_mval, 448030f712c9SDave Chinner orig_nmap, *nmap); 448130f712c9SDave Chinner return error; 448230f712c9SDave Chinner } 448330f712c9SDave Chinner 44847cf199baSDarrick J. Wong int 44856ebd5a44SChristoph Hellwig xfs_bmapi_remap( 44866ebd5a44SChristoph Hellwig struct xfs_trans *tp, 44876ebd5a44SChristoph Hellwig struct xfs_inode *ip, 44886ebd5a44SChristoph Hellwig xfs_fileoff_t bno, 44896ebd5a44SChristoph Hellwig xfs_filblks_t len, 44906ebd5a44SChristoph Hellwig xfs_fsblock_t startblock, 44917cf199baSDarrick J. Wong int flags) 44926ebd5a44SChristoph Hellwig { 44936ebd5a44SChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 44947cf199baSDarrick J. Wong struct xfs_ifork *ifp; 44956ebd5a44SChristoph Hellwig struct xfs_btree_cur *cur = NULL; 44966ebd5a44SChristoph Hellwig struct xfs_bmbt_irec got; 4497b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 44987cf199baSDarrick J. Wong int whichfork = xfs_bmapi_whichfork(flags); 44996ebd5a44SChristoph Hellwig int logflags = 0, error; 45006ebd5a44SChristoph Hellwig 45017cf199baSDarrick J. Wong ifp = XFS_IFORK_PTR(ip, whichfork); 45026ebd5a44SChristoph Hellwig ASSERT(len > 0); 45036ebd5a44SChristoph Hellwig ASSERT(len <= (xfs_filblks_t)MAXEXTLEN); 45046ebd5a44SChristoph Hellwig ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 45057644bd98SDarrick J. Wong ASSERT(!(flags & ~(XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC | 45067644bd98SDarrick J. Wong XFS_BMAPI_NORMAP))); 45077644bd98SDarrick J. Wong ASSERT((flags & (XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC)) != 45087644bd98SDarrick J. Wong (XFS_BMAPI_ATTRFORK | XFS_BMAPI_PREALLOC)); 45096ebd5a44SChristoph Hellwig 45106ebd5a44SChristoph Hellwig if (unlikely(XFS_TEST_ERROR( 45117cf199baSDarrick J. Wong (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 45127cf199baSDarrick J. Wong XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 45139e24cfd0SDarrick J. Wong mp, XFS_ERRTAG_BMAPIFORMAT))) { 45146ebd5a44SChristoph Hellwig XFS_ERROR_REPORT("xfs_bmapi_remap", XFS_ERRLEVEL_LOW, mp); 45156ebd5a44SChristoph Hellwig return -EFSCORRUPTED; 45166ebd5a44SChristoph Hellwig } 45176ebd5a44SChristoph Hellwig 45186ebd5a44SChristoph Hellwig if (XFS_FORCED_SHUTDOWN(mp)) 45196ebd5a44SChristoph Hellwig return -EIO; 45206ebd5a44SChristoph Hellwig 45216ebd5a44SChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 45227cf199baSDarrick J. Wong error = xfs_iread_extents(tp, ip, whichfork); 45236ebd5a44SChristoph Hellwig if (error) 45246ebd5a44SChristoph Hellwig return error; 45256ebd5a44SChristoph Hellwig } 45266ebd5a44SChristoph Hellwig 4527b2b1712aSChristoph Hellwig if (xfs_iext_lookup_extent(ip, ifp, bno, &icur, &got)) { 45286ebd5a44SChristoph Hellwig /* make sure we only reflink into a hole. */ 45296ebd5a44SChristoph Hellwig ASSERT(got.br_startoff > bno); 45306ebd5a44SChristoph Hellwig ASSERT(got.br_startoff - bno >= len); 45316ebd5a44SChristoph Hellwig } 45326ebd5a44SChristoph Hellwig 4533bf8eadbaSChristoph Hellwig ip->i_d.di_nblocks += len; 4534bf8eadbaSChristoph Hellwig xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE); 45356ebd5a44SChristoph Hellwig 45366ebd5a44SChristoph Hellwig if (ifp->if_flags & XFS_IFBROOT) { 45377cf199baSDarrick J. Wong cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 4538580c4ff9SBrian Foster cur->bc_private.b.firstblock = tp->t_firstblock; 45396ebd5a44SChristoph Hellwig cur->bc_private.b.flags = 0; 45406ebd5a44SChristoph Hellwig } 45416ebd5a44SChristoph Hellwig 45426ebd5a44SChristoph Hellwig got.br_startoff = bno; 45436ebd5a44SChristoph Hellwig got.br_startblock = startblock; 45446ebd5a44SChristoph Hellwig got.br_blockcount = len; 45457644bd98SDarrick J. Wong if (flags & XFS_BMAPI_PREALLOC) 45467644bd98SDarrick J. Wong got.br_state = XFS_EXT_UNWRITTEN; 45477644bd98SDarrick J. Wong else 45486ebd5a44SChristoph Hellwig got.br_state = XFS_EXT_NORM; 45496ebd5a44SChristoph Hellwig 45507cf199baSDarrick J. Wong error = xfs_bmap_add_extent_hole_real(tp, ip, whichfork, &icur, 4551580c4ff9SBrian Foster &cur, &got, &tp->t_firstblock, &logflags, flags); 45526ebd5a44SChristoph Hellwig if (error) 45536ebd5a44SChristoph Hellwig goto error0; 45546ebd5a44SChristoph Hellwig 45557cf199baSDarrick J. Wong if (xfs_bmap_wants_extents(ip, whichfork)) { 45566ebd5a44SChristoph Hellwig int tmp_logflags = 0; 45576ebd5a44SChristoph Hellwig 45586ebd5a44SChristoph Hellwig error = xfs_bmap_btree_to_extents(tp, ip, cur, 45597cf199baSDarrick J. Wong &tmp_logflags, whichfork); 45606ebd5a44SChristoph Hellwig logflags |= tmp_logflags; 45616ebd5a44SChristoph Hellwig } 45626ebd5a44SChristoph Hellwig 45636ebd5a44SChristoph Hellwig error0: 45646ebd5a44SChristoph Hellwig if (ip->i_d.di_format != XFS_DINODE_FMT_EXTENTS) 45656ebd5a44SChristoph Hellwig logflags &= ~XFS_ILOG_DEXT; 45666ebd5a44SChristoph Hellwig else if (ip->i_d.di_format != XFS_DINODE_FMT_BTREE) 45676ebd5a44SChristoph Hellwig logflags &= ~XFS_ILOG_DBROOT; 45686ebd5a44SChristoph Hellwig 45696ebd5a44SChristoph Hellwig if (logflags) 45706ebd5a44SChristoph Hellwig xfs_trans_log_inode(tp, ip, logflags); 45716ebd5a44SChristoph Hellwig if (cur) { 45726ebd5a44SChristoph Hellwig xfs_btree_del_cursor(cur, 45736ebd5a44SChristoph Hellwig error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 45746ebd5a44SChristoph Hellwig } 45756ebd5a44SChristoph Hellwig return error; 45766ebd5a44SChristoph Hellwig } 45776ebd5a44SChristoph Hellwig 457830f712c9SDave Chinner /* 4579a9bd24acSBrian Foster * When a delalloc extent is split (e.g., due to a hole punch), the original 4580a9bd24acSBrian Foster * indlen reservation must be shared across the two new extents that are left 4581a9bd24acSBrian Foster * behind. 4582a9bd24acSBrian Foster * 4583a9bd24acSBrian Foster * Given the original reservation and the worst case indlen for the two new 4584a9bd24acSBrian Foster * extents (as calculated by xfs_bmap_worst_indlen()), split the original 4585d34999c9SBrian Foster * reservation fairly across the two new extents. If necessary, steal available 4586d34999c9SBrian Foster * blocks from a deleted extent to make up a reservation deficiency (e.g., if 4587d34999c9SBrian Foster * ores == 1). The number of stolen blocks is returned. The availability and 4588d34999c9SBrian Foster * subsequent accounting of stolen blocks is the responsibility of the caller. 4589a9bd24acSBrian Foster */ 4590d34999c9SBrian Foster static xfs_filblks_t 4591a9bd24acSBrian Foster xfs_bmap_split_indlen( 4592a9bd24acSBrian Foster xfs_filblks_t ores, /* original res. */ 4593a9bd24acSBrian Foster xfs_filblks_t *indlen1, /* ext1 worst indlen */ 4594d34999c9SBrian Foster xfs_filblks_t *indlen2, /* ext2 worst indlen */ 4595d34999c9SBrian Foster xfs_filblks_t avail) /* stealable blocks */ 4596a9bd24acSBrian Foster { 4597a9bd24acSBrian Foster xfs_filblks_t len1 = *indlen1; 4598a9bd24acSBrian Foster xfs_filblks_t len2 = *indlen2; 4599a9bd24acSBrian Foster xfs_filblks_t nres = len1 + len2; /* new total res. */ 4600d34999c9SBrian Foster xfs_filblks_t stolen = 0; 460175d65361SBrian Foster xfs_filblks_t resfactor; 4602a9bd24acSBrian Foster 4603a9bd24acSBrian Foster /* 4604d34999c9SBrian Foster * Steal as many blocks as we can to try and satisfy the worst case 4605d34999c9SBrian Foster * indlen for both new extents. 4606d34999c9SBrian Foster */ 460775d65361SBrian Foster if (ores < nres && avail) 460875d65361SBrian Foster stolen = XFS_FILBLKS_MIN(nres - ores, avail); 460975d65361SBrian Foster ores += stolen; 461075d65361SBrian Foster 461175d65361SBrian Foster /* nothing else to do if we've satisfied the new reservation */ 461275d65361SBrian Foster if (ores >= nres) 461375d65361SBrian Foster return stolen; 4614d34999c9SBrian Foster 4615d34999c9SBrian Foster /* 461675d65361SBrian Foster * We can't meet the total required reservation for the two extents. 461775d65361SBrian Foster * Calculate the percent of the overall shortage between both extents 461875d65361SBrian Foster * and apply this percentage to each of the requested indlen values. 461975d65361SBrian Foster * This distributes the shortage fairly and reduces the chances that one 462075d65361SBrian Foster * of the two extents is left with nothing when extents are repeatedly 462175d65361SBrian Foster * split. 4622a9bd24acSBrian Foster */ 462375d65361SBrian Foster resfactor = (ores * 100); 462475d65361SBrian Foster do_div(resfactor, nres); 462575d65361SBrian Foster len1 *= resfactor; 462675d65361SBrian Foster do_div(len1, 100); 462775d65361SBrian Foster len2 *= resfactor; 462875d65361SBrian Foster do_div(len2, 100); 462975d65361SBrian Foster ASSERT(len1 + len2 <= ores); 463075d65361SBrian Foster ASSERT(len1 < *indlen1 && len2 < *indlen2); 463175d65361SBrian Foster 463275d65361SBrian Foster /* 463375d65361SBrian Foster * Hand out the remainder to each extent. If one of the two reservations 463475d65361SBrian Foster * is zero, we want to make sure that one gets a block first. The loop 463575d65361SBrian Foster * below starts with len1, so hand len2 a block right off the bat if it 463675d65361SBrian Foster * is zero. 463775d65361SBrian Foster */ 463875d65361SBrian Foster ores -= (len1 + len2); 463975d65361SBrian Foster ASSERT((*indlen1 - len1) + (*indlen2 - len2) >= ores); 464075d65361SBrian Foster if (ores && !len2 && *indlen2) { 464175d65361SBrian Foster len2++; 464275d65361SBrian Foster ores--; 4643a9bd24acSBrian Foster } 464475d65361SBrian Foster while (ores) { 464575d65361SBrian Foster if (len1 < *indlen1) { 464675d65361SBrian Foster len1++; 464775d65361SBrian Foster ores--; 464875d65361SBrian Foster } 464975d65361SBrian Foster if (!ores) 4650a9bd24acSBrian Foster break; 465175d65361SBrian Foster if (len2 < *indlen2) { 465275d65361SBrian Foster len2++; 465375d65361SBrian Foster ores--; 4654a9bd24acSBrian Foster } 4655a9bd24acSBrian Foster } 4656a9bd24acSBrian Foster 4657a9bd24acSBrian Foster *indlen1 = len1; 4658a9bd24acSBrian Foster *indlen2 = len2; 4659d34999c9SBrian Foster 4660d34999c9SBrian Foster return stolen; 4661a9bd24acSBrian Foster } 4662a9bd24acSBrian Foster 4663fa5c836cSChristoph Hellwig int 4664fa5c836cSChristoph Hellwig xfs_bmap_del_extent_delay( 4665fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4666fa5c836cSChristoph Hellwig int whichfork, 4667b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 4668fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4669fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4670fa5c836cSChristoph Hellwig { 4671fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4672fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 4673fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4674fa5c836cSChristoph Hellwig int64_t da_old, da_new, da_diff = 0; 4675fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4676fa5c836cSChristoph Hellwig xfs_filblks_t got_indlen, new_indlen, stolen; 4677060ea65bSChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 4678060ea65bSChristoph Hellwig int error = 0; 4679fa5c836cSChristoph Hellwig bool isrt; 4680fa5c836cSChristoph Hellwig 4681fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4682fa5c836cSChristoph Hellwig 4683fa5c836cSChristoph Hellwig isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 4684fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4685fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4686fa5c836cSChristoph Hellwig da_old = startblockval(got->br_startblock); 4687fa5c836cSChristoph Hellwig da_new = 0; 4688fa5c836cSChristoph Hellwig 4689fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4690fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4691fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4692fa5c836cSChristoph Hellwig 4693fa5c836cSChristoph Hellwig if (isrt) { 46944f1adf33SEric Sandeen uint64_t rtexts = XFS_FSB_TO_B(mp, del->br_blockcount); 4695fa5c836cSChristoph Hellwig 4696fa5c836cSChristoph Hellwig do_div(rtexts, mp->m_sb.sb_rextsize); 4697fa5c836cSChristoph Hellwig xfs_mod_frextents(mp, rtexts); 4698fa5c836cSChristoph Hellwig } 4699fa5c836cSChristoph Hellwig 4700fa5c836cSChristoph Hellwig /* 4701fa5c836cSChristoph Hellwig * Update the inode delalloc counter now and wait to update the 4702fa5c836cSChristoph Hellwig * sb counters as we might have to borrow some blocks for the 4703fa5c836cSChristoph Hellwig * indirect block accounting. 4704fa5c836cSChristoph Hellwig */ 47054fd29ec4SDarrick J. Wong error = xfs_trans_reserve_quota_nblks(NULL, ip, 47064fd29ec4SDarrick J. Wong -((long)del->br_blockcount), 0, 4707fa5c836cSChristoph Hellwig isrt ? XFS_QMOPT_RES_RTBLKS : XFS_QMOPT_RES_REGBLKS); 47084fd29ec4SDarrick J. Wong if (error) 47094fd29ec4SDarrick J. Wong return error; 4710fa5c836cSChristoph Hellwig ip->i_delayed_blks -= del->br_blockcount; 4711fa5c836cSChristoph Hellwig 4712fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 47130173c689SChristoph Hellwig state |= BMAP_LEFT_FILLING; 4714fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 47150173c689SChristoph Hellwig state |= BMAP_RIGHT_FILLING; 4716fa5c836cSChristoph Hellwig 47170173c689SChristoph Hellwig switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) { 47180173c689SChristoph Hellwig case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 4719fa5c836cSChristoph Hellwig /* 4720fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4721fa5c836cSChristoph Hellwig */ 4722c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 4723b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 4724fa5c836cSChristoph Hellwig break; 47250173c689SChristoph Hellwig case BMAP_LEFT_FILLING: 4726fa5c836cSChristoph Hellwig /* 4727fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4728fa5c836cSChristoph Hellwig */ 4729fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4730fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4731fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4732fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4733fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4734b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, got); 4735fa5c836cSChristoph Hellwig break; 47360173c689SChristoph Hellwig case BMAP_RIGHT_FILLING: 4737fa5c836cSChristoph Hellwig /* 4738fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4739fa5c836cSChristoph Hellwig */ 4740fa5c836cSChristoph Hellwig got->br_blockcount = got->br_blockcount - del->br_blockcount; 4741fa5c836cSChristoph Hellwig da_new = XFS_FILBLKS_MIN(xfs_bmap_worst_indlen(ip, 4742fa5c836cSChristoph Hellwig got->br_blockcount), da_old); 4743fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)da_new); 4744b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, got); 4745fa5c836cSChristoph Hellwig break; 4746fa5c836cSChristoph Hellwig case 0: 4747fa5c836cSChristoph Hellwig /* 4748fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4749fa5c836cSChristoph Hellwig * 4750fa5c836cSChristoph Hellwig * Distribute the original indlen reservation across the two new 4751fa5c836cSChristoph Hellwig * extents. Steal blocks from the deleted extent if necessary. 4752fa5c836cSChristoph Hellwig * Stealing blocks simply fudges the fdblocks accounting below. 4753fa5c836cSChristoph Hellwig * Warn if either of the new indlen reservations is zero as this 4754fa5c836cSChristoph Hellwig * can lead to delalloc problems. 4755fa5c836cSChristoph Hellwig */ 4756fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4757fa5c836cSChristoph Hellwig got_indlen = xfs_bmap_worst_indlen(ip, got->br_blockcount); 4758fa5c836cSChristoph Hellwig 4759fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4760fa5c836cSChristoph Hellwig new_indlen = xfs_bmap_worst_indlen(ip, new.br_blockcount); 4761fa5c836cSChristoph Hellwig 4762fa5c836cSChristoph Hellwig WARN_ON_ONCE(!got_indlen || !new_indlen); 4763fa5c836cSChristoph Hellwig stolen = xfs_bmap_split_indlen(da_old, &got_indlen, &new_indlen, 4764fa5c836cSChristoph Hellwig del->br_blockcount); 4765fa5c836cSChristoph Hellwig 4766fa5c836cSChristoph Hellwig got->br_startblock = nullstartblock((int)got_indlen); 4767fa5c836cSChristoph Hellwig 4768fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4769fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4770fa5c836cSChristoph Hellwig new.br_startblock = nullstartblock((int)new_indlen); 4771fa5c836cSChristoph Hellwig 4772b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, got); 4773b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 47740254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, &new, state); 4775fa5c836cSChristoph Hellwig 4776fa5c836cSChristoph Hellwig da_new = got_indlen + new_indlen - stolen; 4777fa5c836cSChristoph Hellwig del->br_blockcount -= stolen; 4778fa5c836cSChristoph Hellwig break; 4779fa5c836cSChristoph Hellwig } 4780fa5c836cSChristoph Hellwig 4781fa5c836cSChristoph Hellwig ASSERT(da_old >= da_new); 4782fa5c836cSChristoph Hellwig da_diff = da_old - da_new; 4783fa5c836cSChristoph Hellwig if (!isrt) 4784fa5c836cSChristoph Hellwig da_diff += del->br_blockcount; 4785fa5c836cSChristoph Hellwig if (da_diff) 4786fa5c836cSChristoph Hellwig xfs_mod_fdblocks(mp, da_diff, false); 4787fa5c836cSChristoph Hellwig return error; 4788fa5c836cSChristoph Hellwig } 4789fa5c836cSChristoph Hellwig 4790fa5c836cSChristoph Hellwig void 4791fa5c836cSChristoph Hellwig xfs_bmap_del_extent_cow( 4792fa5c836cSChristoph Hellwig struct xfs_inode *ip, 4793b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 4794fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *got, 4795fa5c836cSChristoph Hellwig struct xfs_bmbt_irec *del) 4796fa5c836cSChristoph Hellwig { 4797fa5c836cSChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 4798fa5c836cSChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, XFS_COW_FORK); 4799fa5c836cSChristoph Hellwig struct xfs_bmbt_irec new; 4800fa5c836cSChristoph Hellwig xfs_fileoff_t del_endoff, got_endoff; 4801fa5c836cSChristoph Hellwig int state = BMAP_COWFORK; 4802fa5c836cSChristoph Hellwig 4803fa5c836cSChristoph Hellwig XFS_STATS_INC(mp, xs_del_exlist); 4804fa5c836cSChristoph Hellwig 4805fa5c836cSChristoph Hellwig del_endoff = del->br_startoff + del->br_blockcount; 4806fa5c836cSChristoph Hellwig got_endoff = got->br_startoff + got->br_blockcount; 4807fa5c836cSChristoph Hellwig 4808fa5c836cSChristoph Hellwig ASSERT(del->br_blockcount > 0); 4809fa5c836cSChristoph Hellwig ASSERT(got->br_startoff <= del->br_startoff); 4810fa5c836cSChristoph Hellwig ASSERT(got_endoff >= del_endoff); 4811fa5c836cSChristoph Hellwig ASSERT(!isnullstartblock(got->br_startblock)); 4812fa5c836cSChristoph Hellwig 4813fa5c836cSChristoph Hellwig if (got->br_startoff == del->br_startoff) 48140173c689SChristoph Hellwig state |= BMAP_LEFT_FILLING; 4815fa5c836cSChristoph Hellwig if (got_endoff == del_endoff) 48160173c689SChristoph Hellwig state |= BMAP_RIGHT_FILLING; 4817fa5c836cSChristoph Hellwig 48180173c689SChristoph Hellwig switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) { 48190173c689SChristoph Hellwig case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 4820fa5c836cSChristoph Hellwig /* 4821fa5c836cSChristoph Hellwig * Matches the whole extent. Delete the entry. 4822fa5c836cSChristoph Hellwig */ 4823c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 4824b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 4825fa5c836cSChristoph Hellwig break; 48260173c689SChristoph Hellwig case BMAP_LEFT_FILLING: 4827fa5c836cSChristoph Hellwig /* 4828fa5c836cSChristoph Hellwig * Deleting the first part of the extent. 4829fa5c836cSChristoph Hellwig */ 4830fa5c836cSChristoph Hellwig got->br_startoff = del_endoff; 4831fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4832fa5c836cSChristoph Hellwig got->br_startblock = del->br_startblock + del->br_blockcount; 4833b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, got); 4834fa5c836cSChristoph Hellwig break; 48350173c689SChristoph Hellwig case BMAP_RIGHT_FILLING: 4836fa5c836cSChristoph Hellwig /* 4837fa5c836cSChristoph Hellwig * Deleting the last part of the extent. 4838fa5c836cSChristoph Hellwig */ 4839fa5c836cSChristoph Hellwig got->br_blockcount -= del->br_blockcount; 4840b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, got); 4841fa5c836cSChristoph Hellwig break; 4842fa5c836cSChristoph Hellwig case 0: 4843fa5c836cSChristoph Hellwig /* 4844fa5c836cSChristoph Hellwig * Deleting the middle of the extent. 4845fa5c836cSChristoph Hellwig */ 4846fa5c836cSChristoph Hellwig got->br_blockcount = del->br_startoff - got->br_startoff; 4847fa5c836cSChristoph Hellwig 4848fa5c836cSChristoph Hellwig new.br_startoff = del_endoff; 4849fa5c836cSChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 4850fa5c836cSChristoph Hellwig new.br_state = got->br_state; 4851fa5c836cSChristoph Hellwig new.br_startblock = del->br_startblock + del->br_blockcount; 4852fa5c836cSChristoph Hellwig 4853b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, got); 4854b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 48550254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, &new, state); 4856fa5c836cSChristoph Hellwig break; 4857fa5c836cSChristoph Hellwig } 48584b4c1326SDarrick J. Wong ip->i_delayed_blks -= del->br_blockcount; 4859fa5c836cSChristoph Hellwig } 4860fa5c836cSChristoph Hellwig 4861a9bd24acSBrian Foster /* 486230f712c9SDave Chinner * Called by xfs_bmapi to update file extent records and the btree 4863e1d7553fSChristoph Hellwig * after removing space. 486430f712c9SDave Chinner */ 486530f712c9SDave Chinner STATIC int /* error */ 4866e1d7553fSChristoph Hellwig xfs_bmap_del_extent_real( 486730f712c9SDave Chinner xfs_inode_t *ip, /* incore inode pointer */ 486830f712c9SDave Chinner xfs_trans_t *tp, /* current transaction pointer */ 4869b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 487030f712c9SDave Chinner xfs_btree_cur_t *cur, /* if null, not a btree */ 487130f712c9SDave Chinner xfs_bmbt_irec_t *del, /* data to remove from extents */ 487230f712c9SDave Chinner int *logflagsp, /* inode logging flags */ 48734847acf8SDarrick J. Wong int whichfork, /* data or attr fork */ 48744847acf8SDarrick J. Wong int bflags) /* bmapi flags */ 487530f712c9SDave Chinner { 487630f712c9SDave Chinner xfs_fsblock_t del_endblock=0; /* first block past del */ 487730f712c9SDave Chinner xfs_fileoff_t del_endoff; /* first offset past del */ 487830f712c9SDave Chinner int do_fx; /* free extent at end of routine */ 487930f712c9SDave Chinner int error; /* error return value */ 48801b24b633SChristoph Hellwig int flags = 0;/* inode logging flags */ 488148fd52b1SChristoph Hellwig struct xfs_bmbt_irec got; /* current extent entry */ 488230f712c9SDave Chinner xfs_fileoff_t got_endoff; /* first offset past got */ 488330f712c9SDave Chinner int i; /* temp state */ 488430f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 488530f712c9SDave Chinner xfs_mount_t *mp; /* mount structure */ 488630f712c9SDave Chinner xfs_filblks_t nblks; /* quota/sb block count */ 488730f712c9SDave Chinner xfs_bmbt_irec_t new; /* new record to be inserted */ 488830f712c9SDave Chinner /* REFERENCED */ 488930f712c9SDave Chinner uint qfield; /* quota field to update */ 4890060ea65bSChristoph Hellwig int state = xfs_bmap_fork_to_state(whichfork); 489148fd52b1SChristoph Hellwig struct xfs_bmbt_irec old; 489281ba8f3eSBrian Foster struct xfs_defer_ops *dfops = tp ? tp->t_dfops : NULL; 489330f712c9SDave Chinner 4894ff6d6af2SBill O'Donnell mp = ip->i_mount; 4895ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_del_exlist); 489630f712c9SDave Chinner 489730f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 489830f712c9SDave Chinner ASSERT(del->br_blockcount > 0); 4899b2b1712aSChristoph Hellwig xfs_iext_get_extent(ifp, icur, &got); 490030f712c9SDave Chinner ASSERT(got.br_startoff <= del->br_startoff); 490130f712c9SDave Chinner del_endoff = del->br_startoff + del->br_blockcount; 490230f712c9SDave Chinner got_endoff = got.br_startoff + got.br_blockcount; 490330f712c9SDave Chinner ASSERT(got_endoff >= del_endoff); 4904e1d7553fSChristoph Hellwig ASSERT(!isnullstartblock(got.br_startblock)); 490530f712c9SDave Chinner qfield = 0; 490630f712c9SDave Chinner error = 0; 4907e1d7553fSChristoph Hellwig 49081b24b633SChristoph Hellwig /* 49091b24b633SChristoph Hellwig * If it's the case where the directory code is running with no block 49101b24b633SChristoph Hellwig * reservation, and the deleted block is in the middle of its extent, 49111b24b633SChristoph Hellwig * and the resulting insert of an extent would cause transformation to 49121b24b633SChristoph Hellwig * btree format, then reject it. The calling code will then swap blocks 49131b24b633SChristoph Hellwig * around instead. We have to do this now, rather than waiting for the 49141b24b633SChristoph Hellwig * conversion to btree format, since the transaction will be dirty then. 49151b24b633SChristoph Hellwig */ 49161b24b633SChristoph Hellwig if (tp->t_blk_res == 0 && 49171b24b633SChristoph Hellwig XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_EXTENTS && 49181b24b633SChristoph Hellwig XFS_IFORK_NEXTENTS(ip, whichfork) >= 49191b24b633SChristoph Hellwig XFS_IFORK_MAXEXT(ip, whichfork) && 49201b24b633SChristoph Hellwig del->br_startoff > got.br_startoff && del_endoff < got_endoff) 49211b24b633SChristoph Hellwig return -ENOSPC; 49221b24b633SChristoph Hellwig 49231b24b633SChristoph Hellwig flags = XFS_ILOG_CORE; 492430f712c9SDave Chinner if (whichfork == XFS_DATA_FORK && XFS_IS_REALTIME_INODE(ip)) { 492530f712c9SDave Chinner xfs_fsblock_t bno; 492630f712c9SDave Chinner xfs_filblks_t len; 49270703a8e1SDave Chinner xfs_extlen_t mod; 492830f712c9SDave Chinner 49290703a8e1SDave Chinner bno = div_u64_rem(del->br_startblock, mp->m_sb.sb_rextsize, 49300703a8e1SDave Chinner &mod); 49310703a8e1SDave Chinner ASSERT(mod == 0); 49320703a8e1SDave Chinner len = div_u64_rem(del->br_blockcount, mp->m_sb.sb_rextsize, 49330703a8e1SDave Chinner &mod); 49340703a8e1SDave Chinner ASSERT(mod == 0); 49350703a8e1SDave Chinner 493630f712c9SDave Chinner error = xfs_rtfree_extent(tp, bno, (xfs_extlen_t)len); 493730f712c9SDave Chinner if (error) 493830f712c9SDave Chinner goto done; 493930f712c9SDave Chinner do_fx = 0; 494030f712c9SDave Chinner nblks = len * mp->m_sb.sb_rextsize; 494130f712c9SDave Chinner qfield = XFS_TRANS_DQ_RTBCOUNT; 4942e1d7553fSChristoph Hellwig } else { 494330f712c9SDave Chinner do_fx = 1; 494430f712c9SDave Chinner nblks = del->br_blockcount; 494530f712c9SDave Chinner qfield = XFS_TRANS_DQ_BCOUNT; 494630f712c9SDave Chinner } 4947e1d7553fSChristoph Hellwig 494830f712c9SDave Chinner del_endblock = del->br_startblock + del->br_blockcount; 494930f712c9SDave Chinner if (cur) { 4950e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &got, &i); 4951e1d7553fSChristoph Hellwig if (error) 495230f712c9SDave Chinner goto done; 4953c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 495430f712c9SDave Chinner } 4955340785ccSDarrick J. Wong 4956491f6f8aSChristoph Hellwig if (got.br_startoff == del->br_startoff) 4957491f6f8aSChristoph Hellwig state |= BMAP_LEFT_FILLING; 4958491f6f8aSChristoph Hellwig if (got_endoff == del_endoff) 4959491f6f8aSChristoph Hellwig state |= BMAP_RIGHT_FILLING; 4960491f6f8aSChristoph Hellwig 4961491f6f8aSChristoph Hellwig switch (state & (BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING)) { 4962491f6f8aSChristoph Hellwig case BMAP_LEFT_FILLING | BMAP_RIGHT_FILLING: 496330f712c9SDave Chinner /* 496430f712c9SDave Chinner * Matches the whole extent. Delete the entry. 496530f712c9SDave Chinner */ 4966c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, state); 4967b2b1712aSChristoph Hellwig xfs_iext_prev(ifp, icur); 496830f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 496930f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 497030f712c9SDave Chinner flags |= XFS_ILOG_CORE; 497130f712c9SDave Chinner if (!cur) { 497230f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 497330f712c9SDave Chinner break; 497430f712c9SDave Chinner } 497530f712c9SDave Chinner if ((error = xfs_btree_delete(cur, &i))) 497630f712c9SDave Chinner goto done; 4977c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 497830f712c9SDave Chinner break; 4979491f6f8aSChristoph Hellwig case BMAP_LEFT_FILLING: 498030f712c9SDave Chinner /* 498130f712c9SDave Chinner * Deleting the first part of the extent. 498230f712c9SDave Chinner */ 498348fd52b1SChristoph Hellwig got.br_startoff = del_endoff; 498448fd52b1SChristoph Hellwig got.br_startblock = del_endblock; 498548fd52b1SChristoph Hellwig got.br_blockcount -= del->br_blockcount; 4986b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &got); 498730f712c9SDave Chinner if (!cur) { 498830f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 498930f712c9SDave Chinner break; 499030f712c9SDave Chinner } 4991a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &got); 499248fd52b1SChristoph Hellwig if (error) 499330f712c9SDave Chinner goto done; 499430f712c9SDave Chinner break; 4995491f6f8aSChristoph Hellwig case BMAP_RIGHT_FILLING: 499630f712c9SDave Chinner /* 499730f712c9SDave Chinner * Deleting the last part of the extent. 499830f712c9SDave Chinner */ 499948fd52b1SChristoph Hellwig got.br_blockcount -= del->br_blockcount; 5000b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &got); 500130f712c9SDave Chinner if (!cur) { 500230f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 500330f712c9SDave Chinner break; 500430f712c9SDave Chinner } 5005a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &got); 500648fd52b1SChristoph Hellwig if (error) 500730f712c9SDave Chinner goto done; 500830f712c9SDave Chinner break; 500930f712c9SDave Chinner case 0: 501030f712c9SDave Chinner /* 501130f712c9SDave Chinner * Deleting the middle of the extent. 501230f712c9SDave Chinner */ 501348fd52b1SChristoph Hellwig old = got; 5014ca5d8e5bSChristoph Hellwig 501548fd52b1SChristoph Hellwig got.br_blockcount = del->br_startoff - got.br_startoff; 5016b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &got); 501748fd52b1SChristoph Hellwig 501830f712c9SDave Chinner new.br_startoff = del_endoff; 501948fd52b1SChristoph Hellwig new.br_blockcount = got_endoff - del_endoff; 502030f712c9SDave Chinner new.br_state = got.br_state; 502130f712c9SDave Chinner new.br_startblock = del_endblock; 502248fd52b1SChristoph Hellwig 502330f712c9SDave Chinner flags |= XFS_ILOG_CORE; 502430f712c9SDave Chinner if (cur) { 5025a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &got); 5026e1d7553fSChristoph Hellwig if (error) 502730f712c9SDave Chinner goto done; 5028e1d7553fSChristoph Hellwig error = xfs_btree_increment(cur, 0, &i); 5029e1d7553fSChristoph Hellwig if (error) 503030f712c9SDave Chinner goto done; 503130f712c9SDave Chinner cur->bc_rec.b = new; 503230f712c9SDave Chinner error = xfs_btree_insert(cur, &i); 50332451337dSDave Chinner if (error && error != -ENOSPC) 503430f712c9SDave Chinner goto done; 503530f712c9SDave Chinner /* 5036e1d7553fSChristoph Hellwig * If get no-space back from btree insert, it tried a 5037e1d7553fSChristoph Hellwig * split, and we have a zero block reservation. Fix up 5038e1d7553fSChristoph Hellwig * our state and return the error. 503930f712c9SDave Chinner */ 50402451337dSDave Chinner if (error == -ENOSPC) { 504130f712c9SDave Chinner /* 5042e1d7553fSChristoph Hellwig * Reset the cursor, don't trust it after any 5043e1d7553fSChristoph Hellwig * insert operation. 504430f712c9SDave Chinner */ 5045e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &got, &i); 5046e1d7553fSChristoph Hellwig if (error) 504730f712c9SDave Chinner goto done; 5048e1d7553fSChristoph Hellwig XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 504930f712c9SDave Chinner /* 505030f712c9SDave Chinner * Update the btree record back 505130f712c9SDave Chinner * to the original value. 505230f712c9SDave Chinner */ 5053a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &old); 5054e1d7553fSChristoph Hellwig if (error) 505530f712c9SDave Chinner goto done; 505630f712c9SDave Chinner /* 505730f712c9SDave Chinner * Reset the extent record back 505830f712c9SDave Chinner * to the original value. 505930f712c9SDave Chinner */ 5060b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, state, icur, &old); 506130f712c9SDave Chinner flags = 0; 50622451337dSDave Chinner error = -ENOSPC; 506330f712c9SDave Chinner goto done; 506430f712c9SDave Chinner } 5065c29aad41SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, i == 1, done); 506630f712c9SDave Chinner } else 506730f712c9SDave Chinner flags |= xfs_ilog_fext(whichfork); 506830f712c9SDave Chinner XFS_IFORK_NEXT_SET(ip, whichfork, 506930f712c9SDave Chinner XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 5070b2b1712aSChristoph Hellwig xfs_iext_next(ifp, icur); 50710254c2f2SChristoph Hellwig xfs_iext_insert(ip, icur, &new, state); 507230f712c9SDave Chinner break; 507330f712c9SDave Chinner } 50749c194644SDarrick J. Wong 50759c194644SDarrick J. Wong /* remove reverse mapping */ 50769c194644SDarrick J. Wong error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, del); 50779c194644SDarrick J. Wong if (error) 50789c194644SDarrick J. Wong goto done; 50799c194644SDarrick J. Wong 508030f712c9SDave Chinner /* 508130f712c9SDave Chinner * If we need to, add to list of extents to delete. 508230f712c9SDave Chinner */ 50834847acf8SDarrick J. Wong if (do_fx && !(bflags & XFS_BMAPI_REMAP)) { 508462aab20fSDarrick J. Wong if (xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) { 508562aab20fSDarrick J. Wong error = xfs_refcount_decrease_extent(mp, dfops, del); 508662aab20fSDarrick J. Wong if (error) 508762aab20fSDarrick J. Wong goto done; 5088fcb762f5SBrian Foster } else { 50894e529339SBrian Foster __xfs_bmap_add_free(mp, dfops, del->br_startblock, 50904e529339SBrian Foster del->br_blockcount, NULL, 50914e529339SBrian Foster (bflags & XFS_BMAPI_NODISCARD) || 50924e529339SBrian Foster del->br_state == XFS_EXT_UNWRITTEN); 5093fcb762f5SBrian Foster } 5094fcb762f5SBrian Foster } 509562aab20fSDarrick J. Wong 509630f712c9SDave Chinner /* 509730f712c9SDave Chinner * Adjust inode # blocks in the file. 509830f712c9SDave Chinner */ 509930f712c9SDave Chinner if (nblks) 510030f712c9SDave Chinner ip->i_d.di_nblocks -= nblks; 510130f712c9SDave Chinner /* 510230f712c9SDave Chinner * Adjust quota data. 510330f712c9SDave Chinner */ 51044847acf8SDarrick J. Wong if (qfield && !(bflags & XFS_BMAPI_REMAP)) 510530f712c9SDave Chinner xfs_trans_mod_dquot_byino(tp, ip, qfield, (long)-nblks); 510630f712c9SDave Chinner 510730f712c9SDave Chinner done: 510830f712c9SDave Chinner *logflagsp = flags; 510930f712c9SDave Chinner return error; 511030f712c9SDave Chinner } 511130f712c9SDave Chinner 511230f712c9SDave Chinner /* 511330f712c9SDave Chinner * Unmap (remove) blocks from a file. 511430f712c9SDave Chinner * If nexts is nonzero then the number of extents to remove is limited to 511530f712c9SDave Chinner * that value. If not all extents in the block range can be removed then 511630f712c9SDave Chinner * *done is set. 511730f712c9SDave Chinner */ 511830f712c9SDave Chinner int /* error */ 51194453593bSDarrick J. Wong __xfs_bunmapi( 5120ccd9d911SBrian Foster struct xfs_trans *tp, /* transaction pointer */ 512130f712c9SDave Chinner struct xfs_inode *ip, /* incore inode */ 51228280f6edSChristoph Hellwig xfs_fileoff_t start, /* first file offset deleted */ 51234453593bSDarrick J. Wong xfs_filblks_t *rlen, /* i/o: amount remaining */ 512430f712c9SDave Chinner int flags, /* misc flags */ 51252af52842SBrian Foster xfs_extnum_t nexts) /* number of extents max */ 512630f712c9SDave Chinner { 5127ccd9d911SBrian Foster struct xfs_btree_cur *cur; /* bmap btree cursor */ 5128ccd9d911SBrian Foster struct xfs_bmbt_irec del; /* extent being deleted */ 512930f712c9SDave Chinner int error; /* error return value */ 513030f712c9SDave Chinner xfs_extnum_t extno; /* extent number in list */ 5131ccd9d911SBrian Foster struct xfs_bmbt_irec got; /* current extent record */ 513230f712c9SDave Chinner xfs_ifork_t *ifp; /* inode fork pointer */ 513330f712c9SDave Chinner int isrt; /* freeing in rt area */ 513430f712c9SDave Chinner int logflags; /* transaction logging flags */ 513530f712c9SDave Chinner xfs_extlen_t mod; /* rt extent offset */ 5136ccd9d911SBrian Foster struct xfs_mount *mp; /* mount structure */ 513730f712c9SDave Chinner int tmp_logflags; /* partial logging flags */ 513830f712c9SDave Chinner int wasdel; /* was a delayed alloc extent */ 513930f712c9SDave Chinner int whichfork; /* data or attribute fork */ 514030f712c9SDave Chinner xfs_fsblock_t sum; 51414453593bSDarrick J. Wong xfs_filblks_t len = *rlen; /* length to unmap in file */ 5142e1a4e37cSDarrick J. Wong xfs_fileoff_t max_len; 51435b094d6dSChristoph Hellwig xfs_agnumber_t prev_agno = NULLAGNUMBER, agno; 51448280f6edSChristoph Hellwig xfs_fileoff_t end; 5145b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 5146b2b1712aSChristoph Hellwig bool done = false; 514730f712c9SDave Chinner 51488280f6edSChristoph Hellwig trace_xfs_bunmap(ip, start, len, flags, _RET_IP_); 514930f712c9SDave Chinner 51503993baebSDarrick J. Wong whichfork = xfs_bmapi_whichfork(flags); 51513993baebSDarrick J. Wong ASSERT(whichfork != XFS_COW_FORK); 515230f712c9SDave Chinner ifp = XFS_IFORK_PTR(ip, whichfork); 515330f712c9SDave Chinner if (unlikely( 515430f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 515530f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE)) { 515630f712c9SDave Chinner XFS_ERROR_REPORT("xfs_bunmapi", XFS_ERRLEVEL_LOW, 515730f712c9SDave Chinner ip->i_mount); 51582451337dSDave Chinner return -EFSCORRUPTED; 515930f712c9SDave Chinner } 516030f712c9SDave Chinner mp = ip->i_mount; 516130f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 51622451337dSDave Chinner return -EIO; 516330f712c9SDave Chinner 516430f712c9SDave Chinner ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 516530f712c9SDave Chinner ASSERT(len > 0); 516630f712c9SDave Chinner ASSERT(nexts >= 0); 516730f712c9SDave Chinner 5168e1a4e37cSDarrick J. Wong /* 5169e1a4e37cSDarrick J. Wong * Guesstimate how many blocks we can unmap without running the risk of 5170e1a4e37cSDarrick J. Wong * blowing out the transaction with a mix of EFIs and reflink 5171e1a4e37cSDarrick J. Wong * adjustments. 5172e1a4e37cSDarrick J. Wong */ 51738c57b886SDarrick J. Wong if (tp && xfs_is_reflink_inode(ip) && whichfork == XFS_DATA_FORK) 5174e1a4e37cSDarrick J. Wong max_len = min(len, xfs_refcount_max_unmap(tp->t_log_res)); 5175e1a4e37cSDarrick J. Wong else 5176e1a4e37cSDarrick J. Wong max_len = len; 5177e1a4e37cSDarrick J. Wong 517830f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS) && 517930f712c9SDave Chinner (error = xfs_iread_extents(tp, ip, whichfork))) 518030f712c9SDave Chinner return error; 51815d829300SEric Sandeen if (xfs_iext_count(ifp) == 0) { 51824453593bSDarrick J. Wong *rlen = 0; 518330f712c9SDave Chinner return 0; 518430f712c9SDave Chinner } 5185ff6d6af2SBill O'Donnell XFS_STATS_INC(mp, xs_blk_unmap); 518630f712c9SDave Chinner isrt = (whichfork == XFS_DATA_FORK) && XFS_IS_REALTIME_INODE(ip); 5187dc56015fSChristoph Hellwig end = start + len; 518830f712c9SDave Chinner 5189b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent_before(ip, ifp, &end, &icur, &got)) { 5190dc56015fSChristoph Hellwig *rlen = 0; 5191dc56015fSChristoph Hellwig return 0; 519230f712c9SDave Chinner } 5193dc56015fSChristoph Hellwig end--; 51947efc7945SChristoph Hellwig 519530f712c9SDave Chinner logflags = 0; 519630f712c9SDave Chinner if (ifp->if_flags & XFS_IFBROOT) { 519730f712c9SDave Chinner ASSERT(XFS_IFORK_FORMAT(ip, whichfork) == XFS_DINODE_FMT_BTREE); 519830f712c9SDave Chinner cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 51992af52842SBrian Foster cur->bc_private.b.firstblock = tp->t_firstblock; 520030f712c9SDave Chinner cur->bc_private.b.flags = 0; 520130f712c9SDave Chinner } else 520230f712c9SDave Chinner cur = NULL; 520330f712c9SDave Chinner 520430f712c9SDave Chinner if (isrt) { 520530f712c9SDave Chinner /* 520630f712c9SDave Chinner * Synchronize by locking the bitmap inode. 520730f712c9SDave Chinner */ 5208f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rbmip, XFS_ILOCK_EXCL|XFS_ILOCK_RTBITMAP); 520930f712c9SDave Chinner xfs_trans_ijoin(tp, mp->m_rbmip, XFS_ILOCK_EXCL); 5210f4a0660dSDarrick J. Wong xfs_ilock(mp->m_rsumip, XFS_ILOCK_EXCL|XFS_ILOCK_RTSUM); 5211f4a0660dSDarrick J. Wong xfs_trans_ijoin(tp, mp->m_rsumip, XFS_ILOCK_EXCL); 521230f712c9SDave Chinner } 521330f712c9SDave Chinner 521430f712c9SDave Chinner extno = 0; 5215b2b1712aSChristoph Hellwig while (end != (xfs_fileoff_t)-1 && end >= start && 5216e1a4e37cSDarrick J. Wong (nexts == 0 || extno < nexts) && max_len > 0) { 521730f712c9SDave Chinner /* 52188280f6edSChristoph Hellwig * Is the found extent after a hole in which end lives? 521930f712c9SDave Chinner * Just back up to the previous extent, if so. 522030f712c9SDave Chinner */ 5221b2b1712aSChristoph Hellwig if (got.br_startoff > end && 5222b2b1712aSChristoph Hellwig !xfs_iext_prev_extent(ifp, &icur, &got)) { 5223b2b1712aSChristoph Hellwig done = true; 522430f712c9SDave Chinner break; 522530f712c9SDave Chinner } 522630f712c9SDave Chinner /* 522730f712c9SDave Chinner * Is the last block of this extent before the range 522830f712c9SDave Chinner * we're supposed to delete? If so, we're done. 522930f712c9SDave Chinner */ 52308280f6edSChristoph Hellwig end = XFS_FILEOFF_MIN(end, 523130f712c9SDave Chinner got.br_startoff + got.br_blockcount - 1); 52328280f6edSChristoph Hellwig if (end < start) 523330f712c9SDave Chinner break; 523430f712c9SDave Chinner /* 523530f712c9SDave Chinner * Then deal with the (possibly delayed) allocated space 523630f712c9SDave Chinner * we found. 523730f712c9SDave Chinner */ 523830f712c9SDave Chinner del = got; 523930f712c9SDave Chinner wasdel = isnullstartblock(del.br_startblock); 52405b094d6dSChristoph Hellwig 52415b094d6dSChristoph Hellwig /* 52425b094d6dSChristoph Hellwig * Make sure we don't touch multiple AGF headers out of order 52435b094d6dSChristoph Hellwig * in a single transaction, as that could cause AB-BA deadlocks. 52445b094d6dSChristoph Hellwig */ 52455b094d6dSChristoph Hellwig if (!wasdel) { 52465b094d6dSChristoph Hellwig agno = XFS_FSB_TO_AGNO(mp, del.br_startblock); 52475b094d6dSChristoph Hellwig if (prev_agno != NULLAGNUMBER && prev_agno > agno) 52485b094d6dSChristoph Hellwig break; 52495b094d6dSChristoph Hellwig prev_agno = agno; 52505b094d6dSChristoph Hellwig } 525130f712c9SDave Chinner if (got.br_startoff < start) { 525230f712c9SDave Chinner del.br_startoff = start; 525330f712c9SDave Chinner del.br_blockcount -= start - got.br_startoff; 525430f712c9SDave Chinner if (!wasdel) 525530f712c9SDave Chinner del.br_startblock += start - got.br_startoff; 525630f712c9SDave Chinner } 52578280f6edSChristoph Hellwig if (del.br_startoff + del.br_blockcount > end + 1) 52588280f6edSChristoph Hellwig del.br_blockcount = end + 1 - del.br_startoff; 5259e1a4e37cSDarrick J. Wong 5260e1a4e37cSDarrick J. Wong /* How much can we safely unmap? */ 5261e1a4e37cSDarrick J. Wong if (max_len < del.br_blockcount) { 5262e1a4e37cSDarrick J. Wong del.br_startoff += del.br_blockcount - max_len; 5263e1a4e37cSDarrick J. Wong if (!wasdel) 5264e1a4e37cSDarrick J. Wong del.br_startblock += del.br_blockcount - max_len; 5265e1a4e37cSDarrick J. Wong del.br_blockcount = max_len; 5266e1a4e37cSDarrick J. Wong } 5267e1a4e37cSDarrick J. Wong 52680703a8e1SDave Chinner if (!isrt) 52690703a8e1SDave Chinner goto delete; 52700703a8e1SDave Chinner 527130f712c9SDave Chinner sum = del.br_startblock + del.br_blockcount; 52720703a8e1SDave Chinner div_u64_rem(sum, mp->m_sb.sb_rextsize, &mod); 52730703a8e1SDave Chinner if (mod) { 527430f712c9SDave Chinner /* 527530f712c9SDave Chinner * Realtime extent not lined up at the end. 527630f712c9SDave Chinner * The extent could have been split into written 527730f712c9SDave Chinner * and unwritten pieces, or we could just be 527830f712c9SDave Chinner * unmapping part of it. But we can't really 527930f712c9SDave Chinner * get rid of part of a realtime extent. 528030f712c9SDave Chinner */ 528130f712c9SDave Chinner if (del.br_state == XFS_EXT_UNWRITTEN || 528230f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 528330f712c9SDave Chinner /* 528430f712c9SDave Chinner * This piece is unwritten, or we're not 528530f712c9SDave Chinner * using unwritten extents. Skip over it. 528630f712c9SDave Chinner */ 52878280f6edSChristoph Hellwig ASSERT(end >= mod); 52888280f6edSChristoph Hellwig end -= mod > del.br_blockcount ? 528930f712c9SDave Chinner del.br_blockcount : mod; 5290b2b1712aSChristoph Hellwig if (end < got.br_startoff && 5291b2b1712aSChristoph Hellwig !xfs_iext_prev_extent(ifp, &icur, &got)) { 5292b2b1712aSChristoph Hellwig done = true; 5293b2b1712aSChristoph Hellwig break; 529430f712c9SDave Chinner } 529530f712c9SDave Chinner continue; 529630f712c9SDave Chinner } 529730f712c9SDave Chinner /* 529830f712c9SDave Chinner * It's written, turn it unwritten. 529930f712c9SDave Chinner * This is better than zeroing it. 530030f712c9SDave Chinner */ 530130f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 5302a7e5d03bSChristoph Hellwig ASSERT(tp->t_blk_res > 0); 530330f712c9SDave Chinner /* 530430f712c9SDave Chinner * If this spans a realtime extent boundary, 530530f712c9SDave Chinner * chop it back to the start of the one we end at. 530630f712c9SDave Chinner */ 530730f712c9SDave Chinner if (del.br_blockcount > mod) { 530830f712c9SDave Chinner del.br_startoff += del.br_blockcount - mod; 530930f712c9SDave Chinner del.br_startblock += del.br_blockcount - mod; 531030f712c9SDave Chinner del.br_blockcount = mod; 531130f712c9SDave Chinner } 531230f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 531330f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, ip, 5314b2b1712aSChristoph Hellwig whichfork, &icur, &cur, &del, 53152af52842SBrian Foster &tp->t_firstblock, &logflags); 531630f712c9SDave Chinner if (error) 531730f712c9SDave Chinner goto error0; 531830f712c9SDave Chinner goto nodelete; 531930f712c9SDave Chinner } 53200703a8e1SDave Chinner div_u64_rem(del.br_startblock, mp->m_sb.sb_rextsize, &mod); 53210703a8e1SDave Chinner if (mod) { 532230f712c9SDave Chinner /* 532330f712c9SDave Chinner * Realtime extent is lined up at the end but not 532430f712c9SDave Chinner * at the front. We'll get rid of full extents if 532530f712c9SDave Chinner * we can. 532630f712c9SDave Chinner */ 532730f712c9SDave Chinner mod = mp->m_sb.sb_rextsize - mod; 532830f712c9SDave Chinner if (del.br_blockcount > mod) { 532930f712c9SDave Chinner del.br_blockcount -= mod; 533030f712c9SDave Chinner del.br_startoff += mod; 533130f712c9SDave Chinner del.br_startblock += mod; 533230f712c9SDave Chinner } else if ((del.br_startoff == start && 533330f712c9SDave Chinner (del.br_state == XFS_EXT_UNWRITTEN || 5334a7e5d03bSChristoph Hellwig tp->t_blk_res == 0)) || 533530f712c9SDave Chinner !xfs_sb_version_hasextflgbit(&mp->m_sb)) { 533630f712c9SDave Chinner /* 533730f712c9SDave Chinner * Can't make it unwritten. There isn't 533830f712c9SDave Chinner * a full extent here so just skip it. 533930f712c9SDave Chinner */ 53408280f6edSChristoph Hellwig ASSERT(end >= del.br_blockcount); 53418280f6edSChristoph Hellwig end -= del.br_blockcount; 5342b2b1712aSChristoph Hellwig if (got.br_startoff > end && 5343b2b1712aSChristoph Hellwig !xfs_iext_prev_extent(ifp, &icur, &got)) { 5344b2b1712aSChristoph Hellwig done = true; 5345b2b1712aSChristoph Hellwig break; 5346b2b1712aSChristoph Hellwig } 534730f712c9SDave Chinner continue; 534830f712c9SDave Chinner } else if (del.br_state == XFS_EXT_UNWRITTEN) { 53497efc7945SChristoph Hellwig struct xfs_bmbt_irec prev; 53507efc7945SChristoph Hellwig 535130f712c9SDave Chinner /* 535230f712c9SDave Chinner * This one is already unwritten. 535330f712c9SDave Chinner * It must have a written left neighbor. 535430f712c9SDave Chinner * Unwrite the killed part of that one and 535530f712c9SDave Chinner * try again. 535630f712c9SDave Chinner */ 5357b2b1712aSChristoph Hellwig if (!xfs_iext_prev_extent(ifp, &icur, &prev)) 5358b2b1712aSChristoph Hellwig ASSERT(0); 535930f712c9SDave Chinner ASSERT(prev.br_state == XFS_EXT_NORM); 536030f712c9SDave Chinner ASSERT(!isnullstartblock(prev.br_startblock)); 536130f712c9SDave Chinner ASSERT(del.br_startblock == 536230f712c9SDave Chinner prev.br_startblock + prev.br_blockcount); 536330f712c9SDave Chinner if (prev.br_startoff < start) { 536430f712c9SDave Chinner mod = start - prev.br_startoff; 536530f712c9SDave Chinner prev.br_blockcount -= mod; 536630f712c9SDave Chinner prev.br_startblock += mod; 536730f712c9SDave Chinner prev.br_startoff = start; 536830f712c9SDave Chinner } 536930f712c9SDave Chinner prev.br_state = XFS_EXT_UNWRITTEN; 537030f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 5371b2b1712aSChristoph Hellwig ip, whichfork, &icur, &cur, 53722af52842SBrian Foster &prev, &tp->t_firstblock, 53732af52842SBrian Foster &logflags); 537430f712c9SDave Chinner if (error) 537530f712c9SDave Chinner goto error0; 537630f712c9SDave Chinner goto nodelete; 537730f712c9SDave Chinner } else { 537830f712c9SDave Chinner ASSERT(del.br_state == XFS_EXT_NORM); 537930f712c9SDave Chinner del.br_state = XFS_EXT_UNWRITTEN; 538030f712c9SDave Chinner error = xfs_bmap_add_extent_unwritten_real(tp, 5381b2b1712aSChristoph Hellwig ip, whichfork, &icur, &cur, 53822af52842SBrian Foster &del, &tp->t_firstblock, 53832af52842SBrian Foster &logflags); 538430f712c9SDave Chinner if (error) 538530f712c9SDave Chinner goto error0; 538630f712c9SDave Chinner goto nodelete; 538730f712c9SDave Chinner } 538830f712c9SDave Chinner } 538930f712c9SDave Chinner 53900703a8e1SDave Chinner delete: 5391e1d7553fSChristoph Hellwig if (wasdel) { 5392b2b1712aSChristoph Hellwig error = xfs_bmap_del_extent_delay(ip, whichfork, &icur, 5393e1d7553fSChristoph Hellwig &got, &del); 5394e1d7553fSChristoph Hellwig } else { 539581ba8f3eSBrian Foster error = xfs_bmap_del_extent_real(ip, tp, &icur, cur, 539681ba8f3eSBrian Foster &del, &tmp_logflags, whichfork, 5397e1d7553fSChristoph Hellwig flags); 539830f712c9SDave Chinner logflags |= tmp_logflags; 5399e1d7553fSChristoph Hellwig } 5400e1d7553fSChristoph Hellwig 540130f712c9SDave Chinner if (error) 540230f712c9SDave Chinner goto error0; 5403b2706a05SBrian Foster 5404e1a4e37cSDarrick J. Wong max_len -= del.br_blockcount; 54058280f6edSChristoph Hellwig end = del.br_startoff - 1; 540630f712c9SDave Chinner nodelete: 540730f712c9SDave Chinner /* 540830f712c9SDave Chinner * If not done go on to the next (previous) record. 540930f712c9SDave Chinner */ 54108280f6edSChristoph Hellwig if (end != (xfs_fileoff_t)-1 && end >= start) { 5411b2b1712aSChristoph Hellwig if (!xfs_iext_get_extent(ifp, &icur, &got) || 5412b2b1712aSChristoph Hellwig (got.br_startoff > end && 5413b2b1712aSChristoph Hellwig !xfs_iext_prev_extent(ifp, &icur, &got))) { 5414b2b1712aSChristoph Hellwig done = true; 5415b2b1712aSChristoph Hellwig break; 541630f712c9SDave Chinner } 541730f712c9SDave Chinner extno++; 541830f712c9SDave Chinner } 541930f712c9SDave Chinner } 5420b2b1712aSChristoph Hellwig if (done || end == (xfs_fileoff_t)-1 || end < start) 54214453593bSDarrick J. Wong *rlen = 0; 54224453593bSDarrick J. Wong else 54238280f6edSChristoph Hellwig *rlen = end - start + 1; 542430f712c9SDave Chinner 542530f712c9SDave Chinner /* 542630f712c9SDave Chinner * Convert to a btree if necessary. 542730f712c9SDave Chinner */ 542830f712c9SDave Chinner if (xfs_bmap_needs_btree(ip, whichfork)) { 542930f712c9SDave Chinner ASSERT(cur == NULL); 54302af52842SBrian Foster error = xfs_bmap_extents_to_btree(tp, ip, &tp->t_firstblock, 54312af52842SBrian Foster &cur, 0, &tmp_logflags, whichfork); 543230f712c9SDave Chinner logflags |= tmp_logflags; 543330f712c9SDave Chinner if (error) 543430f712c9SDave Chinner goto error0; 543530f712c9SDave Chinner } 543630f712c9SDave Chinner /* 543730f712c9SDave Chinner * transform from btree to extents, give it cur 543830f712c9SDave Chinner */ 543930f712c9SDave Chinner else if (xfs_bmap_wants_extents(ip, whichfork)) { 544030f712c9SDave Chinner ASSERT(cur != NULL); 544130f712c9SDave Chinner error = xfs_bmap_btree_to_extents(tp, ip, cur, &tmp_logflags, 544230f712c9SDave Chinner whichfork); 544330f712c9SDave Chinner logflags |= tmp_logflags; 544430f712c9SDave Chinner if (error) 544530f712c9SDave Chinner goto error0; 544630f712c9SDave Chinner } 544730f712c9SDave Chinner /* 544830f712c9SDave Chinner * transform from extents to local? 544930f712c9SDave Chinner */ 545030f712c9SDave Chinner error = 0; 545130f712c9SDave Chinner error0: 545230f712c9SDave Chinner /* 545330f712c9SDave Chinner * Log everything. Do this after conversion, there's no point in 545430f712c9SDave Chinner * logging the extent records if we've converted to btree format. 545530f712c9SDave Chinner */ 545630f712c9SDave Chinner if ((logflags & xfs_ilog_fext(whichfork)) && 545730f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS) 545830f712c9SDave Chinner logflags &= ~xfs_ilog_fext(whichfork); 545930f712c9SDave Chinner else if ((logflags & xfs_ilog_fbroot(whichfork)) && 546030f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE) 546130f712c9SDave Chinner logflags &= ~xfs_ilog_fbroot(whichfork); 546230f712c9SDave Chinner /* 546330f712c9SDave Chinner * Log inode even in the error case, if the transaction 546430f712c9SDave Chinner * is dirty we'll need to shut down the filesystem. 546530f712c9SDave Chinner */ 546630f712c9SDave Chinner if (logflags) 546730f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 546830f712c9SDave Chinner if (cur) { 546930f712c9SDave Chinner if (!error) { 54702af52842SBrian Foster tp->t_firstblock = cur->bc_private.b.firstblock; 547130f712c9SDave Chinner cur->bc_private.b.allocated = 0; 547230f712c9SDave Chinner } 547330f712c9SDave Chinner xfs_btree_del_cursor(cur, 547430f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 547530f712c9SDave Chinner } 547630f712c9SDave Chinner return error; 547730f712c9SDave Chinner } 547830f712c9SDave Chinner 54794453593bSDarrick J. Wong /* Unmap a range of a file. */ 54804453593bSDarrick J. Wong int 54814453593bSDarrick J. Wong xfs_bunmapi( 54824453593bSDarrick J. Wong xfs_trans_t *tp, 54834453593bSDarrick J. Wong struct xfs_inode *ip, 54844453593bSDarrick J. Wong xfs_fileoff_t bno, 54854453593bSDarrick J. Wong xfs_filblks_t len, 54864453593bSDarrick J. Wong int flags, 54874453593bSDarrick J. Wong xfs_extnum_t nexts, 54884453593bSDarrick J. Wong int *done) 54894453593bSDarrick J. Wong { 54904453593bSDarrick J. Wong int error; 54914453593bSDarrick J. Wong 54922af52842SBrian Foster error = __xfs_bunmapi(tp, ip, bno, &len, flags, nexts); 54934453593bSDarrick J. Wong *done = (len == 0); 54944453593bSDarrick J. Wong return error; 54954453593bSDarrick J. Wong } 54964453593bSDarrick J. Wong 549730f712c9SDave Chinner /* 5498ddb19e31SBrian Foster * Determine whether an extent shift can be accomplished by a merge with the 5499ddb19e31SBrian Foster * extent that precedes the target hole of the shift. 5500ddb19e31SBrian Foster */ 5501ddb19e31SBrian Foster STATIC bool 5502ddb19e31SBrian Foster xfs_bmse_can_merge( 5503ddb19e31SBrian Foster struct xfs_bmbt_irec *left, /* preceding extent */ 5504ddb19e31SBrian Foster struct xfs_bmbt_irec *got, /* current extent to shift */ 5505ddb19e31SBrian Foster xfs_fileoff_t shift) /* shift fsb */ 5506ddb19e31SBrian Foster { 5507ddb19e31SBrian Foster xfs_fileoff_t startoff; 5508ddb19e31SBrian Foster 5509ddb19e31SBrian Foster startoff = got->br_startoff - shift; 5510ddb19e31SBrian Foster 5511ddb19e31SBrian Foster /* 5512ddb19e31SBrian Foster * The extent, once shifted, must be adjacent in-file and on-disk with 5513ddb19e31SBrian Foster * the preceding extent. 5514ddb19e31SBrian Foster */ 5515ddb19e31SBrian Foster if ((left->br_startoff + left->br_blockcount != startoff) || 5516ddb19e31SBrian Foster (left->br_startblock + left->br_blockcount != got->br_startblock) || 5517ddb19e31SBrian Foster (left->br_state != got->br_state) || 5518ddb19e31SBrian Foster (left->br_blockcount + got->br_blockcount > MAXEXTLEN)) 5519ddb19e31SBrian Foster return false; 5520ddb19e31SBrian Foster 5521ddb19e31SBrian Foster return true; 5522ddb19e31SBrian Foster } 5523ddb19e31SBrian Foster 5524ddb19e31SBrian Foster /* 5525ddb19e31SBrian Foster * A bmap extent shift adjusts the file offset of an extent to fill a preceding 5526ddb19e31SBrian Foster * hole in the file. If an extent shift would result in the extent being fully 5527ddb19e31SBrian Foster * adjacent to the extent that currently precedes the hole, we can merge with 5528ddb19e31SBrian Foster * the preceding extent rather than do the shift. 5529ddb19e31SBrian Foster * 5530ddb19e31SBrian Foster * This function assumes the caller has verified a shift-by-merge is possible 5531ddb19e31SBrian Foster * with the provided extents via xfs_bmse_can_merge(). 5532ddb19e31SBrian Foster */ 5533ddb19e31SBrian Foster STATIC int 5534ddb19e31SBrian Foster xfs_bmse_merge( 5535ddb19e31SBrian Foster struct xfs_inode *ip, 5536ddb19e31SBrian Foster int whichfork, 5537ddb19e31SBrian Foster xfs_fileoff_t shift, /* shift fsb */ 5538b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 55394da6b514SChristoph Hellwig struct xfs_bmbt_irec *got, /* extent to shift */ 55404da6b514SChristoph Hellwig struct xfs_bmbt_irec *left, /* preceding extent */ 5541ddb19e31SBrian Foster struct xfs_btree_cur *cur, 55424da6b514SChristoph Hellwig int *logflags, /* output */ 55434da6b514SChristoph Hellwig struct xfs_defer_ops *dfops) 5544ddb19e31SBrian Foster { 55454da6b514SChristoph Hellwig struct xfs_bmbt_irec new; 5546ddb19e31SBrian Foster xfs_filblks_t blockcount; 5547ddb19e31SBrian Foster int error, i; 55485fb5aeeeSEric Sandeen struct xfs_mount *mp = ip->i_mount; 5549ddb19e31SBrian Foster 55504da6b514SChristoph Hellwig blockcount = left->br_blockcount + got->br_blockcount; 5551ddb19e31SBrian Foster 5552ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 5553ddb19e31SBrian Foster ASSERT(xfs_isilocked(ip, XFS_ILOCK_EXCL)); 55544da6b514SChristoph Hellwig ASSERT(xfs_bmse_can_merge(left, got, shift)); 5555ddb19e31SBrian Foster 55564da6b514SChristoph Hellwig new = *left; 55574da6b514SChristoph Hellwig new.br_blockcount = blockcount; 5558ddb19e31SBrian Foster 5559ddb19e31SBrian Foster /* 5560ddb19e31SBrian Foster * Update the on-disk extent count, the btree if necessary and log the 5561ddb19e31SBrian Foster * inode. 5562ddb19e31SBrian Foster */ 5563ddb19e31SBrian Foster XFS_IFORK_NEXT_SET(ip, whichfork, 5564ddb19e31SBrian Foster XFS_IFORK_NEXTENTS(ip, whichfork) - 1); 5565ddb19e31SBrian Foster *logflags |= XFS_ILOG_CORE; 5566ddb19e31SBrian Foster if (!cur) { 5567ddb19e31SBrian Foster *logflags |= XFS_ILOG_DEXT; 55684da6b514SChristoph Hellwig goto done; 5569ddb19e31SBrian Foster } 5570ddb19e31SBrian Foster 5571ddb19e31SBrian Foster /* lookup and remove the extent to merge */ 5572e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, got, &i); 5573ddb19e31SBrian Foster if (error) 55744db431f5SDave Chinner return error; 55755fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5576ddb19e31SBrian Foster 5577ddb19e31SBrian Foster error = xfs_btree_delete(cur, &i); 5578ddb19e31SBrian Foster if (error) 55794db431f5SDave Chinner return error; 55805fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5581ddb19e31SBrian Foster 5582ddb19e31SBrian Foster /* lookup and update size of the previous extent */ 5583e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, left, &i); 5584ddb19e31SBrian Foster if (error) 55854db431f5SDave Chinner return error; 55865fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5587ddb19e31SBrian Foster 5588a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &new); 55894da6b514SChristoph Hellwig if (error) 55904da6b514SChristoph Hellwig return error; 5591ddb19e31SBrian Foster 55924da6b514SChristoph Hellwig done: 5593c38ccf59SChristoph Hellwig xfs_iext_remove(ip, icur, 0); 5594b2b1712aSChristoph Hellwig xfs_iext_prev(XFS_IFORK_PTR(ip, whichfork), icur); 5595b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), icur, 5596b2b1712aSChristoph Hellwig &new); 55974da6b514SChristoph Hellwig 55984cc1ee5eSDarrick J. Wong /* update reverse mapping. rmap functions merge the rmaps for us */ 55994da6b514SChristoph Hellwig error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, got); 56004da6b514SChristoph Hellwig if (error) 56014da6b514SChristoph Hellwig return error; 56024cc1ee5eSDarrick J. Wong memcpy(&new, got, sizeof(new)); 56034cc1ee5eSDarrick J. Wong new.br_startoff = left->br_startoff + left->br_blockcount; 56044da6b514SChristoph Hellwig return xfs_rmap_map_extent(mp, dfops, ip, whichfork, &new); 5605ddb19e31SBrian Foster } 5606ddb19e31SBrian Foster 5607bf806280SChristoph Hellwig static int 5608bf806280SChristoph Hellwig xfs_bmap_shift_update_extent( 5609a979bdfeSBrian Foster struct xfs_inode *ip, 5610a979bdfeSBrian Foster int whichfork, 5611b2b1712aSChristoph Hellwig struct xfs_iext_cursor *icur, 56124da6b514SChristoph Hellwig struct xfs_bmbt_irec *got, 5613a979bdfeSBrian Foster struct xfs_btree_cur *cur, 5614a904b1caSNamjae Jeon int *logflags, 5615bf806280SChristoph Hellwig struct xfs_defer_ops *dfops, 5616bf806280SChristoph Hellwig xfs_fileoff_t startoff) 5617a979bdfeSBrian Foster { 5618bf806280SChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 561911f75b3bSChristoph Hellwig struct xfs_bmbt_irec prev = *got; 5620bf806280SChristoph Hellwig int error, i; 5621a979bdfeSBrian Foster 5622a979bdfeSBrian Foster *logflags |= XFS_ILOG_CORE; 5623a979bdfeSBrian Foster 562411f75b3bSChristoph Hellwig got->br_startoff = startoff; 56254da6b514SChristoph Hellwig 56264da6b514SChristoph Hellwig if (cur) { 562711f75b3bSChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &prev, &i); 5628a979bdfeSBrian Foster if (error) 5629a979bdfeSBrian Foster return error; 56305fb5aeeeSEric Sandeen XFS_WANT_CORRUPTED_RETURN(mp, i == 1); 5631a979bdfeSBrian Foster 563211f75b3bSChristoph Hellwig error = xfs_bmbt_update(cur, got); 56339c194644SDarrick J. Wong if (error) 56349c194644SDarrick J. Wong return error; 56354da6b514SChristoph Hellwig } else { 56364da6b514SChristoph Hellwig *logflags |= XFS_ILOG_DEXT; 56374da6b514SChristoph Hellwig } 56389c194644SDarrick J. Wong 5639b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), icur, 5640b2b1712aSChristoph Hellwig got); 56414da6b514SChristoph Hellwig 56429c194644SDarrick J. Wong /* update reverse mapping */ 564311f75b3bSChristoph Hellwig error = xfs_rmap_unmap_extent(mp, dfops, ip, whichfork, &prev); 56449c194644SDarrick J. Wong if (error) 56459c194644SDarrick J. Wong return error; 564611f75b3bSChristoph Hellwig return xfs_rmap_map_extent(mp, dfops, ip, whichfork, got); 5647a979bdfeSBrian Foster } 5648a979bdfeSBrian Foster 564930f712c9SDave Chinner int 5650ecfea3f0SChristoph Hellwig xfs_bmap_collapse_extents( 565130f712c9SDave Chinner struct xfs_trans *tp, 565230f712c9SDave Chinner struct xfs_inode *ip, 5653a904b1caSNamjae Jeon xfs_fileoff_t *next_fsb, 565430f712c9SDave Chinner xfs_fileoff_t offset_shift_fsb, 5655ecfea3f0SChristoph Hellwig bool *done, 5656f4a9cf97SBrian Foster xfs_fsblock_t *firstblock) 565730f712c9SDave Chinner { 5658ecfea3f0SChristoph Hellwig int whichfork = XFS_DATA_FORK; 5659ecfea3f0SChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 5660ecfea3f0SChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 5661ca446d88SBrian Foster struct xfs_btree_cur *cur = NULL; 5662bf806280SChristoph Hellwig struct xfs_bmbt_irec got, prev; 5663b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 5664bf806280SChristoph Hellwig xfs_fileoff_t new_startoff; 566530f712c9SDave Chinner int error = 0; 5666ca446d88SBrian Foster int logflags = 0; 566730f712c9SDave Chinner 566830f712c9SDave Chinner if (unlikely(XFS_TEST_ERROR( 566930f712c9SDave Chinner (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 567030f712c9SDave Chinner XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 56719e24cfd0SDarrick J. Wong mp, XFS_ERRTAG_BMAPIFORMAT))) { 5672ecfea3f0SChristoph Hellwig XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp); 56732451337dSDave Chinner return -EFSCORRUPTED; 567430f712c9SDave Chinner } 567530f712c9SDave Chinner 567630f712c9SDave Chinner if (XFS_FORCED_SHUTDOWN(mp)) 56772451337dSDave Chinner return -EIO; 567830f712c9SDave Chinner 5679ecfea3f0SChristoph Hellwig ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL)); 568030f712c9SDave Chinner 568130f712c9SDave Chinner if (!(ifp->if_flags & XFS_IFEXTENTS)) { 568230f712c9SDave Chinner error = xfs_iread_extents(tp, ip, whichfork); 568330f712c9SDave Chinner if (error) 568430f712c9SDave Chinner return error; 568530f712c9SDave Chinner } 568630f712c9SDave Chinner 5687ddb19e31SBrian Foster if (ifp->if_flags & XFS_IFBROOT) { 5688ddb19e31SBrian Foster cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 5689ddb19e31SBrian Foster cur->bc_private.b.firstblock = *firstblock; 5690ddb19e31SBrian Foster cur->bc_private.b.flags = 0; 5691ddb19e31SBrian Foster } 5692ddb19e31SBrian Foster 5693b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, *next_fsb, &icur, &got)) { 5694ecfea3f0SChristoph Hellwig *done = true; 5695ecfea3f0SChristoph Hellwig goto del_cursor; 5696ecfea3f0SChristoph Hellwig } 5697d41c6172SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, !isnullstartblock(got.br_startblock), 5698d41c6172SEric Sandeen del_cursor); 5699ecfea3f0SChristoph Hellwig 5700bf806280SChristoph Hellwig new_startoff = got.br_startoff - offset_shift_fsb; 5701b2b1712aSChristoph Hellwig if (xfs_iext_peek_prev_extent(ifp, &icur, &prev)) { 5702bf806280SChristoph Hellwig if (new_startoff < prev.br_startoff + prev.br_blockcount) { 5703bf806280SChristoph Hellwig error = -EINVAL; 5704bf806280SChristoph Hellwig goto del_cursor; 5705bf806280SChristoph Hellwig } 5706bf806280SChristoph Hellwig 5707bf806280SChristoph Hellwig if (xfs_bmse_can_merge(&prev, &got, offset_shift_fsb)) { 5708bf806280SChristoph Hellwig error = xfs_bmse_merge(ip, whichfork, offset_shift_fsb, 5709b2b1712aSChristoph Hellwig &icur, &got, &prev, cur, &logflags, 5710f4a9cf97SBrian Foster tp->t_dfops); 5711ecfea3f0SChristoph Hellwig if (error) 5712ecfea3f0SChristoph Hellwig goto del_cursor; 5713bf806280SChristoph Hellwig goto done; 5714bf806280SChristoph Hellwig } 5715bf806280SChristoph Hellwig } else { 5716bf806280SChristoph Hellwig if (got.br_startoff < offset_shift_fsb) { 5717bf806280SChristoph Hellwig error = -EINVAL; 5718bf806280SChristoph Hellwig goto del_cursor; 5719bf806280SChristoph Hellwig } 5720bf806280SChristoph Hellwig } 5721bf806280SChristoph Hellwig 5722b2b1712aSChristoph Hellwig error = xfs_bmap_shift_update_extent(ip, whichfork, &icur, &got, cur, 5723f4a9cf97SBrian Foster &logflags, tp->t_dfops, new_startoff); 5724bf806280SChristoph Hellwig if (error) 5725bf806280SChristoph Hellwig goto del_cursor; 572640591bdbSChristoph Hellwig 572742630361SChristoph Hellwig done: 5728b2b1712aSChristoph Hellwig if (!xfs_iext_next_extent(ifp, &icur, &got)) { 5729ecfea3f0SChristoph Hellwig *done = true; 5730ecfea3f0SChristoph Hellwig goto del_cursor; 5731ecfea3f0SChristoph Hellwig } 5732ecfea3f0SChristoph Hellwig 5733ecfea3f0SChristoph Hellwig *next_fsb = got.br_startoff; 5734ecfea3f0SChristoph Hellwig del_cursor: 5735ecfea3f0SChristoph Hellwig if (cur) 5736ecfea3f0SChristoph Hellwig xfs_btree_del_cursor(cur, 5737ecfea3f0SChristoph Hellwig error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 5738ecfea3f0SChristoph Hellwig if (logflags) 5739ecfea3f0SChristoph Hellwig xfs_trans_log_inode(tp, ip, logflags); 5740ecfea3f0SChristoph Hellwig return error; 5741ecfea3f0SChristoph Hellwig } 5742ecfea3f0SChristoph Hellwig 5743f62cb48eSDarrick J. Wong /* Make sure we won't be right-shifting an extent past the maximum bound. */ 5744f62cb48eSDarrick J. Wong int 5745f62cb48eSDarrick J. Wong xfs_bmap_can_insert_extents( 5746f62cb48eSDarrick J. Wong struct xfs_inode *ip, 5747f62cb48eSDarrick J. Wong xfs_fileoff_t off, 5748f62cb48eSDarrick J. Wong xfs_fileoff_t shift) 5749f62cb48eSDarrick J. Wong { 5750f62cb48eSDarrick J. Wong struct xfs_bmbt_irec got; 5751f62cb48eSDarrick J. Wong int is_empty; 5752f62cb48eSDarrick J. Wong int error = 0; 5753f62cb48eSDarrick J. Wong 5754f62cb48eSDarrick J. Wong ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL)); 5755f62cb48eSDarrick J. Wong 5756f62cb48eSDarrick J. Wong if (XFS_FORCED_SHUTDOWN(ip->i_mount)) 5757f62cb48eSDarrick J. Wong return -EIO; 5758f62cb48eSDarrick J. Wong 5759f62cb48eSDarrick J. Wong xfs_ilock(ip, XFS_ILOCK_EXCL); 5760f62cb48eSDarrick J. Wong error = xfs_bmap_last_extent(NULL, ip, XFS_DATA_FORK, &got, &is_empty); 5761f62cb48eSDarrick J. Wong if (!error && !is_empty && got.br_startoff >= off && 5762f62cb48eSDarrick J. Wong ((got.br_startoff + shift) & BMBT_STARTOFF_MASK) < got.br_startoff) 5763f62cb48eSDarrick J. Wong error = -EINVAL; 5764f62cb48eSDarrick J. Wong xfs_iunlock(ip, XFS_ILOCK_EXCL); 5765f62cb48eSDarrick J. Wong 5766f62cb48eSDarrick J. Wong return error; 5767f62cb48eSDarrick J. Wong } 5768f62cb48eSDarrick J. Wong 5769ecfea3f0SChristoph Hellwig int 5770ecfea3f0SChristoph Hellwig xfs_bmap_insert_extents( 5771ecfea3f0SChristoph Hellwig struct xfs_trans *tp, 5772ecfea3f0SChristoph Hellwig struct xfs_inode *ip, 5773ecfea3f0SChristoph Hellwig xfs_fileoff_t *next_fsb, 5774ecfea3f0SChristoph Hellwig xfs_fileoff_t offset_shift_fsb, 5775ecfea3f0SChristoph Hellwig bool *done, 5776ecfea3f0SChristoph Hellwig xfs_fileoff_t stop_fsb, 5777f4a9cf97SBrian Foster xfs_fsblock_t *firstblock) 5778ecfea3f0SChristoph Hellwig { 5779ecfea3f0SChristoph Hellwig int whichfork = XFS_DATA_FORK; 5780ecfea3f0SChristoph Hellwig struct xfs_mount *mp = ip->i_mount; 5781ecfea3f0SChristoph Hellwig struct xfs_ifork *ifp = XFS_IFORK_PTR(ip, whichfork); 5782ecfea3f0SChristoph Hellwig struct xfs_btree_cur *cur = NULL; 57835936dc54SChristoph Hellwig struct xfs_bmbt_irec got, next; 5784b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 5785bf806280SChristoph Hellwig xfs_fileoff_t new_startoff; 5786ecfea3f0SChristoph Hellwig int error = 0; 5787ecfea3f0SChristoph Hellwig int logflags = 0; 5788ecfea3f0SChristoph Hellwig 5789ecfea3f0SChristoph Hellwig if (unlikely(XFS_TEST_ERROR( 5790ecfea3f0SChristoph Hellwig (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 5791ecfea3f0SChristoph Hellwig XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 5792ecfea3f0SChristoph Hellwig mp, XFS_ERRTAG_BMAPIFORMAT))) { 5793ecfea3f0SChristoph Hellwig XFS_ERROR_REPORT(__func__, XFS_ERRLEVEL_LOW, mp); 5794ecfea3f0SChristoph Hellwig return -EFSCORRUPTED; 5795ecfea3f0SChristoph Hellwig } 5796ecfea3f0SChristoph Hellwig 5797ecfea3f0SChristoph Hellwig if (XFS_FORCED_SHUTDOWN(mp)) 5798ecfea3f0SChristoph Hellwig return -EIO; 5799ecfea3f0SChristoph Hellwig 5800ecfea3f0SChristoph Hellwig ASSERT(xfs_isilocked(ip, XFS_IOLOCK_EXCL | XFS_ILOCK_EXCL)); 5801ecfea3f0SChristoph Hellwig 5802ecfea3f0SChristoph Hellwig if (!(ifp->if_flags & XFS_IFEXTENTS)) { 5803ecfea3f0SChristoph Hellwig error = xfs_iread_extents(tp, ip, whichfork); 5804ecfea3f0SChristoph Hellwig if (error) 5805ecfea3f0SChristoph Hellwig return error; 5806ecfea3f0SChristoph Hellwig } 5807ecfea3f0SChristoph Hellwig 5808ecfea3f0SChristoph Hellwig if (ifp->if_flags & XFS_IFBROOT) { 5809ecfea3f0SChristoph Hellwig cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 5810ecfea3f0SChristoph Hellwig cur->bc_private.b.firstblock = *firstblock; 5811ecfea3f0SChristoph Hellwig cur->bc_private.b.flags = 0; 5812ecfea3f0SChristoph Hellwig } 5813ecfea3f0SChristoph Hellwig 5814a904b1caSNamjae Jeon if (*next_fsb == NULLFSBLOCK) { 5815b2b1712aSChristoph Hellwig xfs_iext_last(ifp, &icur); 5816b2b1712aSChristoph Hellwig if (!xfs_iext_get_extent(ifp, &icur, &got) || 58175936dc54SChristoph Hellwig stop_fsb > got.br_startoff) { 5818ecfea3f0SChristoph Hellwig *done = true; 5819a904b1caSNamjae Jeon goto del_cursor; 5820a904b1caSNamjae Jeon } 582105b7c8abSChristoph Hellwig } else { 5822b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, *next_fsb, &icur, &got)) { 5823ecfea3f0SChristoph Hellwig *done = true; 5824a904b1caSNamjae Jeon goto del_cursor; 5825a904b1caSNamjae Jeon } 582605b7c8abSChristoph Hellwig } 5827d41c6172SEric Sandeen XFS_WANT_CORRUPTED_GOTO(mp, !isnullstartblock(got.br_startblock), 5828d41c6172SEric Sandeen del_cursor); 5829a904b1caSNamjae Jeon 58305936dc54SChristoph Hellwig if (stop_fsb >= got.br_startoff + got.br_blockcount) { 5831a904b1caSNamjae Jeon error = -EIO; 5832a904b1caSNamjae Jeon goto del_cursor; 5833a904b1caSNamjae Jeon } 5834a904b1caSNamjae Jeon 5835bf806280SChristoph Hellwig new_startoff = got.br_startoff + offset_shift_fsb; 5836b2b1712aSChristoph Hellwig if (xfs_iext_peek_next_extent(ifp, &icur, &next)) { 5837bf806280SChristoph Hellwig if (new_startoff + got.br_blockcount > next.br_startoff) { 5838bf806280SChristoph Hellwig error = -EINVAL; 5839bf806280SChristoph Hellwig goto del_cursor; 5840bf806280SChristoph Hellwig } 5841bf806280SChristoph Hellwig 5842bf806280SChristoph Hellwig /* 5843bf806280SChristoph Hellwig * Unlike a left shift (which involves a hole punch), a right 5844bf806280SChristoph Hellwig * shift does not modify extent neighbors in any way. We should 5845bf806280SChristoph Hellwig * never find mergeable extents in this scenario. Check anyways 5846bf806280SChristoph Hellwig * and warn if we encounter two extents that could be one. 5847bf806280SChristoph Hellwig */ 5848bf806280SChristoph Hellwig if (xfs_bmse_can_merge(&got, &next, offset_shift_fsb)) 5849bf806280SChristoph Hellwig WARN_ON_ONCE(1); 5850bf806280SChristoph Hellwig } 5851bf806280SChristoph Hellwig 5852b2b1712aSChristoph Hellwig error = xfs_bmap_shift_update_extent(ip, whichfork, &icur, &got, cur, 5853f4a9cf97SBrian Foster &logflags, tp->t_dfops, new_startoff); 5854ddb19e31SBrian Foster if (error) 5855ddb19e31SBrian Foster goto del_cursor; 58565936dc54SChristoph Hellwig 5857b2b1712aSChristoph Hellwig if (!xfs_iext_prev_extent(ifp, &icur, &got) || 58585936dc54SChristoph Hellwig stop_fsb >= got.br_startoff + got.br_blockcount) { 5859ecfea3f0SChristoph Hellwig *done = true; 58606b18af0dSChristoph Hellwig goto del_cursor; 5861a904b1caSNamjae Jeon } 586230f712c9SDave Chinner 58632c845f5aSBrian Foster *next_fsb = got.br_startoff; 586430f712c9SDave Chinner del_cursor: 586530f712c9SDave Chinner if (cur) 586630f712c9SDave Chinner xfs_btree_del_cursor(cur, 586730f712c9SDave Chinner error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 5868ca446d88SBrian Foster if (logflags) 586930f712c9SDave Chinner xfs_trans_log_inode(tp, ip, logflags); 587030f712c9SDave Chinner return error; 587130f712c9SDave Chinner } 5872a904b1caSNamjae Jeon 5873a904b1caSNamjae Jeon /* 5874b2b1712aSChristoph Hellwig * Splits an extent into two extents at split_fsb block such that it is the 5875b2b1712aSChristoph Hellwig * first block of the current_ext. @ext is a target extent to be split. 5876b2b1712aSChristoph Hellwig * @split_fsb is a block where the extents is split. If split_fsb lies in a 5877b2b1712aSChristoph Hellwig * hole or the first block of extents, just return 0. 5878a904b1caSNamjae Jeon */ 5879a904b1caSNamjae Jeon STATIC int 5880a904b1caSNamjae Jeon xfs_bmap_split_extent_at( 5881a904b1caSNamjae Jeon struct xfs_trans *tp, 5882a904b1caSNamjae Jeon struct xfs_inode *ip, 5883a904b1caSNamjae Jeon xfs_fileoff_t split_fsb, 5884d76e6ce8SBrian Foster xfs_fsblock_t *firstfsb) 5885a904b1caSNamjae Jeon { 5886a904b1caSNamjae Jeon int whichfork = XFS_DATA_FORK; 5887a904b1caSNamjae Jeon struct xfs_btree_cur *cur = NULL; 5888a904b1caSNamjae Jeon struct xfs_bmbt_irec got; 5889a904b1caSNamjae Jeon struct xfs_bmbt_irec new; /* split extent */ 5890a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 5891a904b1caSNamjae Jeon struct xfs_ifork *ifp; 5892a904b1caSNamjae Jeon xfs_fsblock_t gotblkcnt; /* new block count for got */ 5893b2b1712aSChristoph Hellwig struct xfs_iext_cursor icur; 5894a904b1caSNamjae Jeon int error = 0; 5895a904b1caSNamjae Jeon int logflags = 0; 5896a904b1caSNamjae Jeon int i = 0; 5897a904b1caSNamjae Jeon 5898a904b1caSNamjae Jeon if (unlikely(XFS_TEST_ERROR( 5899a904b1caSNamjae Jeon (XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_EXTENTS && 5900a904b1caSNamjae Jeon XFS_IFORK_FORMAT(ip, whichfork) != XFS_DINODE_FMT_BTREE), 59019e24cfd0SDarrick J. Wong mp, XFS_ERRTAG_BMAPIFORMAT))) { 5902a904b1caSNamjae Jeon XFS_ERROR_REPORT("xfs_bmap_split_extent_at", 5903a904b1caSNamjae Jeon XFS_ERRLEVEL_LOW, mp); 5904a904b1caSNamjae Jeon return -EFSCORRUPTED; 5905a904b1caSNamjae Jeon } 5906a904b1caSNamjae Jeon 5907a904b1caSNamjae Jeon if (XFS_FORCED_SHUTDOWN(mp)) 5908a904b1caSNamjae Jeon return -EIO; 5909a904b1caSNamjae Jeon 5910a904b1caSNamjae Jeon ifp = XFS_IFORK_PTR(ip, whichfork); 5911a904b1caSNamjae Jeon if (!(ifp->if_flags & XFS_IFEXTENTS)) { 5912a904b1caSNamjae Jeon /* Read in all the extents */ 5913a904b1caSNamjae Jeon error = xfs_iread_extents(tp, ip, whichfork); 5914a904b1caSNamjae Jeon if (error) 5915a904b1caSNamjae Jeon return error; 5916a904b1caSNamjae Jeon } 5917a904b1caSNamjae Jeon 5918a904b1caSNamjae Jeon /* 59194c35445bSChristoph Hellwig * If there are not extents, or split_fsb lies in a hole we are done. 5920a904b1caSNamjae Jeon */ 5921b2b1712aSChristoph Hellwig if (!xfs_iext_lookup_extent(ip, ifp, split_fsb, &icur, &got) || 59224c35445bSChristoph Hellwig got.br_startoff >= split_fsb) 5923a904b1caSNamjae Jeon return 0; 5924a904b1caSNamjae Jeon 5925a904b1caSNamjae Jeon gotblkcnt = split_fsb - got.br_startoff; 5926a904b1caSNamjae Jeon new.br_startoff = split_fsb; 5927a904b1caSNamjae Jeon new.br_startblock = got.br_startblock + gotblkcnt; 5928a904b1caSNamjae Jeon new.br_blockcount = got.br_blockcount - gotblkcnt; 5929a904b1caSNamjae Jeon new.br_state = got.br_state; 5930a904b1caSNamjae Jeon 5931a904b1caSNamjae Jeon if (ifp->if_flags & XFS_IFBROOT) { 5932a904b1caSNamjae Jeon cur = xfs_bmbt_init_cursor(mp, tp, ip, whichfork); 5933a904b1caSNamjae Jeon cur->bc_private.b.firstblock = *firstfsb; 5934a904b1caSNamjae Jeon cur->bc_private.b.flags = 0; 5935e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &got, &i); 5936a904b1caSNamjae Jeon if (error) 5937a904b1caSNamjae Jeon goto del_cursor; 5938a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 5939a904b1caSNamjae Jeon } 5940a904b1caSNamjae Jeon 5941a904b1caSNamjae Jeon got.br_blockcount = gotblkcnt; 5942b2b1712aSChristoph Hellwig xfs_iext_update_extent(ip, xfs_bmap_fork_to_state(whichfork), &icur, 5943b2b1712aSChristoph Hellwig &got); 5944a904b1caSNamjae Jeon 5945a904b1caSNamjae Jeon logflags = XFS_ILOG_CORE; 5946a904b1caSNamjae Jeon if (cur) { 5947a67d00a5SChristoph Hellwig error = xfs_bmbt_update(cur, &got); 5948a904b1caSNamjae Jeon if (error) 5949a904b1caSNamjae Jeon goto del_cursor; 5950a904b1caSNamjae Jeon } else 5951a904b1caSNamjae Jeon logflags |= XFS_ILOG_DEXT; 5952a904b1caSNamjae Jeon 5953a904b1caSNamjae Jeon /* Add new extent */ 5954b2b1712aSChristoph Hellwig xfs_iext_next(ifp, &icur); 59550254c2f2SChristoph Hellwig xfs_iext_insert(ip, &icur, &new, 0); 5956a904b1caSNamjae Jeon XFS_IFORK_NEXT_SET(ip, whichfork, 5957a904b1caSNamjae Jeon XFS_IFORK_NEXTENTS(ip, whichfork) + 1); 5958a904b1caSNamjae Jeon 5959a904b1caSNamjae Jeon if (cur) { 5960e16cf9b0SChristoph Hellwig error = xfs_bmbt_lookup_eq(cur, &new, &i); 5961a904b1caSNamjae Jeon if (error) 5962a904b1caSNamjae Jeon goto del_cursor; 5963a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 0, del_cursor); 5964a904b1caSNamjae Jeon error = xfs_btree_insert(cur, &i); 5965a904b1caSNamjae Jeon if (error) 5966a904b1caSNamjae Jeon goto del_cursor; 5967a904b1caSNamjae Jeon XFS_WANT_CORRUPTED_GOTO(mp, i == 1, del_cursor); 5968a904b1caSNamjae Jeon } 5969a904b1caSNamjae Jeon 5970a904b1caSNamjae Jeon /* 5971a904b1caSNamjae Jeon * Convert to a btree if necessary. 5972a904b1caSNamjae Jeon */ 5973a904b1caSNamjae Jeon if (xfs_bmap_needs_btree(ip, whichfork)) { 5974a904b1caSNamjae Jeon int tmp_logflags; /* partial log flag return val */ 5975a904b1caSNamjae Jeon 5976a904b1caSNamjae Jeon ASSERT(cur == NULL); 597781ba8f3eSBrian Foster error = xfs_bmap_extents_to_btree(tp, ip, firstfsb, &cur, 0, 597881ba8f3eSBrian Foster &tmp_logflags, whichfork); 5979a904b1caSNamjae Jeon logflags |= tmp_logflags; 5980a904b1caSNamjae Jeon } 5981a904b1caSNamjae Jeon 5982a904b1caSNamjae Jeon del_cursor: 5983a904b1caSNamjae Jeon if (cur) { 5984a904b1caSNamjae Jeon cur->bc_private.b.allocated = 0; 5985a904b1caSNamjae Jeon xfs_btree_del_cursor(cur, 5986a904b1caSNamjae Jeon error ? XFS_BTREE_ERROR : XFS_BTREE_NOERROR); 5987a904b1caSNamjae Jeon } 5988a904b1caSNamjae Jeon 5989a904b1caSNamjae Jeon if (logflags) 5990a904b1caSNamjae Jeon xfs_trans_log_inode(tp, ip, logflags); 5991a904b1caSNamjae Jeon return error; 5992a904b1caSNamjae Jeon } 5993a904b1caSNamjae Jeon 5994a904b1caSNamjae Jeon int 5995a904b1caSNamjae Jeon xfs_bmap_split_extent( 5996a904b1caSNamjae Jeon struct xfs_inode *ip, 5997a904b1caSNamjae Jeon xfs_fileoff_t split_fsb) 5998a904b1caSNamjae Jeon { 5999a904b1caSNamjae Jeon struct xfs_mount *mp = ip->i_mount; 6000a904b1caSNamjae Jeon struct xfs_trans *tp; 60012c3234d1SDarrick J. Wong struct xfs_defer_ops dfops; 6002a904b1caSNamjae Jeon xfs_fsblock_t firstfsb; 6003a904b1caSNamjae Jeon int error; 6004a904b1caSNamjae Jeon 6005253f4911SChristoph Hellwig error = xfs_trans_alloc(mp, &M_RES(mp)->tr_write, 6006253f4911SChristoph Hellwig XFS_DIOSTRAT_SPACE_RES(mp, 0), 0, 0, &tp); 6007253f4911SChristoph Hellwig if (error) 6008a904b1caSNamjae Jeon return error; 6009bcd2c9f3SBrian Foster xfs_defer_init(tp, &dfops, &firstfsb); 6010a904b1caSNamjae Jeon 6011a904b1caSNamjae Jeon xfs_ilock(ip, XFS_ILOCK_EXCL); 6012a904b1caSNamjae Jeon xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL); 6013a904b1caSNamjae Jeon 6014a904b1caSNamjae Jeon error = xfs_bmap_split_extent_at(tp, ip, split_fsb, 6015d76e6ce8SBrian Foster &firstfsb); 6016a904b1caSNamjae Jeon if (error) 6017a904b1caSNamjae Jeon goto out; 6018a904b1caSNamjae Jeon 60198ad7c629SChristoph Hellwig error = xfs_defer_finish(&tp, &dfops); 6020a904b1caSNamjae Jeon if (error) 6021a904b1caSNamjae Jeon goto out; 6022a904b1caSNamjae Jeon 602370393313SChristoph Hellwig return xfs_trans_commit(tp); 6024a904b1caSNamjae Jeon 6025a904b1caSNamjae Jeon out: 60262c3234d1SDarrick J. Wong xfs_defer_cancel(&dfops); 60274906e215SChristoph Hellwig xfs_trans_cancel(tp); 6028a904b1caSNamjae Jeon return error; 6029a904b1caSNamjae Jeon } 60309f3afb57SDarrick J. Wong 60319f3afb57SDarrick J. Wong /* Deferred mapping is only for real extents in the data fork. */ 60329f3afb57SDarrick J. Wong static bool 60339f3afb57SDarrick J. Wong xfs_bmap_is_update_needed( 60349f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 60359f3afb57SDarrick J. Wong { 60369f3afb57SDarrick J. Wong return bmap->br_startblock != HOLESTARTBLOCK && 60379f3afb57SDarrick J. Wong bmap->br_startblock != DELAYSTARTBLOCK; 60389f3afb57SDarrick J. Wong } 60399f3afb57SDarrick J. Wong 60409f3afb57SDarrick J. Wong /* Record a bmap intent. */ 60419f3afb57SDarrick J. Wong static int 60429f3afb57SDarrick J. Wong __xfs_bmap_add( 60439f3afb57SDarrick J. Wong struct xfs_mount *mp, 60449f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 60459f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 60469f3afb57SDarrick J. Wong struct xfs_inode *ip, 60479f3afb57SDarrick J. Wong int whichfork, 60489f3afb57SDarrick J. Wong struct xfs_bmbt_irec *bmap) 60499f3afb57SDarrick J. Wong { 60509f3afb57SDarrick J. Wong int error; 60519f3afb57SDarrick J. Wong struct xfs_bmap_intent *bi; 60529f3afb57SDarrick J. Wong 60539f3afb57SDarrick J. Wong trace_xfs_bmap_defer(mp, 60549f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(mp, bmap->br_startblock), 60559f3afb57SDarrick J. Wong type, 60569f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(mp, bmap->br_startblock), 60579f3afb57SDarrick J. Wong ip->i_ino, whichfork, 60589f3afb57SDarrick J. Wong bmap->br_startoff, 60599f3afb57SDarrick J. Wong bmap->br_blockcount, 60609f3afb57SDarrick J. Wong bmap->br_state); 60619f3afb57SDarrick J. Wong 60629f3afb57SDarrick J. Wong bi = kmem_alloc(sizeof(struct xfs_bmap_intent), KM_SLEEP | KM_NOFS); 60639f3afb57SDarrick J. Wong INIT_LIST_HEAD(&bi->bi_list); 60649f3afb57SDarrick J. Wong bi->bi_type = type; 60659f3afb57SDarrick J. Wong bi->bi_owner = ip; 60669f3afb57SDarrick J. Wong bi->bi_whichfork = whichfork; 60679f3afb57SDarrick J. Wong bi->bi_bmap = *bmap; 60689f3afb57SDarrick J. Wong 6069882d8785SChristoph Hellwig error = xfs_defer_ijoin(dfops, bi->bi_owner); 60709f3afb57SDarrick J. Wong if (error) { 60719f3afb57SDarrick J. Wong kmem_free(bi); 60729f3afb57SDarrick J. Wong return error; 60739f3afb57SDarrick J. Wong } 60749f3afb57SDarrick J. Wong 60759f3afb57SDarrick J. Wong xfs_defer_add(dfops, XFS_DEFER_OPS_TYPE_BMAP, &bi->bi_list); 60769f3afb57SDarrick J. Wong return 0; 60779f3afb57SDarrick J. Wong } 60789f3afb57SDarrick J. Wong 60799f3afb57SDarrick J. Wong /* Map an extent into a file. */ 60809f3afb57SDarrick J. Wong int 60819f3afb57SDarrick J. Wong xfs_bmap_map_extent( 60829f3afb57SDarrick J. Wong struct xfs_mount *mp, 60839f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 60849f3afb57SDarrick J. Wong struct xfs_inode *ip, 60859f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 60869f3afb57SDarrick J. Wong { 60879f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 60889f3afb57SDarrick J. Wong return 0; 60899f3afb57SDarrick J. Wong 60909f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_MAP, ip, 60919f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 60929f3afb57SDarrick J. Wong } 60939f3afb57SDarrick J. Wong 60949f3afb57SDarrick J. Wong /* Unmap an extent out of a file. */ 60959f3afb57SDarrick J. Wong int 60969f3afb57SDarrick J. Wong xfs_bmap_unmap_extent( 60979f3afb57SDarrick J. Wong struct xfs_mount *mp, 60989f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 60999f3afb57SDarrick J. Wong struct xfs_inode *ip, 61009f3afb57SDarrick J. Wong struct xfs_bmbt_irec *PREV) 61019f3afb57SDarrick J. Wong { 61029f3afb57SDarrick J. Wong if (!xfs_bmap_is_update_needed(PREV)) 61039f3afb57SDarrick J. Wong return 0; 61049f3afb57SDarrick J. Wong 61059f3afb57SDarrick J. Wong return __xfs_bmap_add(mp, dfops, XFS_BMAP_UNMAP, ip, 61069f3afb57SDarrick J. Wong XFS_DATA_FORK, PREV); 61079f3afb57SDarrick J. Wong } 61089f3afb57SDarrick J. Wong 61099f3afb57SDarrick J. Wong /* 61109f3afb57SDarrick J. Wong * Process one of the deferred bmap operations. We pass back the 61119f3afb57SDarrick J. Wong * btree cursor to maintain our lock on the bmapbt between calls. 61129f3afb57SDarrick J. Wong */ 61139f3afb57SDarrick J. Wong int 61149f3afb57SDarrick J. Wong xfs_bmap_finish_one( 61159f3afb57SDarrick J. Wong struct xfs_trans *tp, 61169f3afb57SDarrick J. Wong struct xfs_defer_ops *dfops, 61179f3afb57SDarrick J. Wong struct xfs_inode *ip, 61189f3afb57SDarrick J. Wong enum xfs_bmap_intent_type type, 61199f3afb57SDarrick J. Wong int whichfork, 61209f3afb57SDarrick J. Wong xfs_fileoff_t startoff, 61219f3afb57SDarrick J. Wong xfs_fsblock_t startblock, 6122e1a4e37cSDarrick J. Wong xfs_filblks_t *blockcount, 61239f3afb57SDarrick J. Wong xfs_exntst_t state) 61249f3afb57SDarrick J. Wong { 6125e1a4e37cSDarrick J. Wong int error = 0; 61269f3afb57SDarrick J. Wong 612737283797SBrian Foster ASSERT(tp->t_firstblock == NULLFSBLOCK); 61284c1a67bdSDarrick J. Wong 61299f3afb57SDarrick J. Wong trace_xfs_bmap_deferred(tp->t_mountp, 61309f3afb57SDarrick J. Wong XFS_FSB_TO_AGNO(tp->t_mountp, startblock), type, 61319f3afb57SDarrick J. Wong XFS_FSB_TO_AGBNO(tp->t_mountp, startblock), 6132e1a4e37cSDarrick J. Wong ip->i_ino, whichfork, startoff, *blockcount, state); 61339f3afb57SDarrick J. Wong 613439e07daaSChristoph Hellwig if (WARN_ON_ONCE(whichfork != XFS_DATA_FORK)) 61359f3afb57SDarrick J. Wong return -EFSCORRUPTED; 61369f3afb57SDarrick J. Wong 61379f3afb57SDarrick J. Wong if (XFS_TEST_ERROR(false, tp->t_mountp, 61389e24cfd0SDarrick J. Wong XFS_ERRTAG_BMAP_FINISH_ONE)) 61399f3afb57SDarrick J. Wong return -EIO; 61409f3afb57SDarrick J. Wong 61419f3afb57SDarrick J. Wong switch (type) { 61429f3afb57SDarrick J. Wong case XFS_BMAP_MAP: 6143ff3edf25SBrian Foster ASSERT(dfops == tp->t_dfops); 6144e1a4e37cSDarrick J. Wong error = xfs_bmapi_remap(tp, ip, startoff, *blockcount, 6145ff3edf25SBrian Foster startblock, 0); 6146e1a4e37cSDarrick J. Wong *blockcount = 0; 61479f3afb57SDarrick J. Wong break; 61489f3afb57SDarrick J. Wong case XFS_BMAP_UNMAP: 6149e1a4e37cSDarrick J. Wong error = __xfs_bunmapi(tp, ip, startoff, blockcount, 61502af52842SBrian Foster XFS_BMAPI_REMAP, 1); 61519f3afb57SDarrick J. Wong break; 61529f3afb57SDarrick J. Wong default: 61539f3afb57SDarrick J. Wong ASSERT(0); 61549f3afb57SDarrick J. Wong error = -EFSCORRUPTED; 61559f3afb57SDarrick J. Wong } 61569f3afb57SDarrick J. Wong 61579f3afb57SDarrick J. Wong return error; 61589f3afb57SDarrick J. Wong } 615930b0984dSDarrick J. Wong 616030b0984dSDarrick J. Wong /* Check that an inode's extent does not have invalid flags or bad ranges. */ 616130b0984dSDarrick J. Wong xfs_failaddr_t 616230b0984dSDarrick J. Wong xfs_bmap_validate_extent( 616330b0984dSDarrick J. Wong struct xfs_inode *ip, 616430b0984dSDarrick J. Wong int whichfork, 616530b0984dSDarrick J. Wong struct xfs_bmbt_irec *irec) 616630b0984dSDarrick J. Wong { 616730b0984dSDarrick J. Wong struct xfs_mount *mp = ip->i_mount; 616830b0984dSDarrick J. Wong xfs_fsblock_t endfsb; 616930b0984dSDarrick J. Wong bool isrt; 617030b0984dSDarrick J. Wong 617130b0984dSDarrick J. Wong isrt = XFS_IS_REALTIME_INODE(ip); 617230b0984dSDarrick J. Wong endfsb = irec->br_startblock + irec->br_blockcount - 1; 617330b0984dSDarrick J. Wong if (isrt) { 617430b0984dSDarrick J. Wong if (!xfs_verify_rtbno(mp, irec->br_startblock)) 617530b0984dSDarrick J. Wong return __this_address; 617630b0984dSDarrick J. Wong if (!xfs_verify_rtbno(mp, endfsb)) 617730b0984dSDarrick J. Wong return __this_address; 617830b0984dSDarrick J. Wong } else { 617930b0984dSDarrick J. Wong if (!xfs_verify_fsbno(mp, irec->br_startblock)) 618030b0984dSDarrick J. Wong return __this_address; 618130b0984dSDarrick J. Wong if (!xfs_verify_fsbno(mp, endfsb)) 618230b0984dSDarrick J. Wong return __this_address; 618330b0984dSDarrick J. Wong if (XFS_FSB_TO_AGNO(mp, irec->br_startblock) != 618430b0984dSDarrick J. Wong XFS_FSB_TO_AGNO(mp, endfsb)) 618530b0984dSDarrick J. Wong return __this_address; 618630b0984dSDarrick J. Wong } 618730b0984dSDarrick J. Wong if (irec->br_state != XFS_EXT_NORM) { 618830b0984dSDarrick J. Wong if (whichfork != XFS_DATA_FORK) 618930b0984dSDarrick J. Wong return __this_address; 619030b0984dSDarrick J. Wong if (!xfs_sb_version_hasextflgbit(&mp->m_sb)) 619130b0984dSDarrick J. Wong return __this_address; 619230b0984dSDarrick J. Wong } 619330b0984dSDarrick J. Wong return NULL; 619430b0984dSDarrick J. Wong } 6195