diff options
author | Christoph Hellwig <hch@infradead.org> | 2008-10-30 16:55:58 +1100 |
---|---|---|
committer | Lachlan McIlroy <lachlan@sgi.com> | 2008-10-30 16:55:58 +1100 |
commit | 8df4da4a0a642d3a016028c0d922bcb4d5a4a6d7 (patch) | |
tree | 29b07230f8269ef12a10665d757a6e935c4e2e49 /fs/xfs/xfs_bmap_btree.c | |
parent | 637aa50f461b8ea6b1e8bf9877b0d13d00085043 (diff) | |
download | linux-3.10-8df4da4a0a642d3a016028c0d922bcb4d5a4a6d7.tar.gz linux-3.10-8df4da4a0a642d3a016028c0d922bcb4d5a4a6d7.tar.bz2 linux-3.10-8df4da4a0a642d3a016028c0d922bcb4d5a4a6d7.zip |
[XFS] implement generic xfs_btree_decrement
From: Dave Chinner <dgc@sgi.com>
[hch: split out from bigger patch and minor adaptions]
SGI-PV: 985583
SGI-Modid: xfs-linux-melb:xfs-kern:32191a
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Lachlan McIlroy <lachlan@sgi.com>
Signed-off-by: Bill O'Donnell <billodo@sgi.com>
Signed-off-by: David Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_bmap_btree.c')
-rw-r--r-- | fs/xfs/xfs_bmap_btree.c | 90 |
1 files changed, 8 insertions, 82 deletions
diff --git a/fs/xfs/xfs_bmap_btree.c b/fs/xfs/xfs_bmap_btree.c index 2d29a4980cf..7b5181d34a5 100644 --- a/fs/xfs/xfs_bmap_btree.c +++ b/fs/xfs/xfs_bmap_btree.c @@ -203,7 +203,7 @@ xfs_bmbt_delrec( XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } - if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &j))) { + if (level > 0 && (error = xfs_btree_decrement(cur, level, &j))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } @@ -216,7 +216,7 @@ xfs_bmbt_delrec( goto error0; } if (numrecs >= XFS_BMAP_BLOCK_IMINRECS(level, cur)) { - if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &j))) { + if (level > 0 && (error = xfs_btree_decrement(cur, level, &j))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } @@ -237,7 +237,7 @@ xfs_bmbt_delrec( XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } - if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &i))) { + if (level > 0 && (error = xfs_btree_decrement(cur, level, &i))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } @@ -282,7 +282,7 @@ xfs_bmbt_delrec( xfs_btree_del_cursor(tcur, XFS_BTREE_NOERROR); tcur = NULL; if (level > 0) { - if ((error = xfs_bmbt_decrement(cur, + if ((error = xfs_btree_decrement(cur, level, &i))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); @@ -298,7 +298,7 @@ xfs_bmbt_delrec( if (lbno != NULLFSBLOCK) { i = xfs_btree_firstrec(tcur, level); XFS_WANT_CORRUPTED_GOTO(i == 1, error0); - if ((error = xfs_bmbt_decrement(tcur, level, &i))) { + if ((error = xfs_btree_decrement(tcur, level, &i))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } @@ -311,7 +311,7 @@ xfs_bmbt_delrec( /* * decrement to last in block */ - if ((error = xfs_bmbt_decrement(tcur, level, &i))) { + if ((error = xfs_btree_decrement(tcur, level, &i))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } @@ -383,7 +383,7 @@ xfs_bmbt_delrec( } lrecs = be16_to_cpu(left->bb_numrecs); } else { - if (level > 0 && (error = xfs_bmbt_decrement(cur, level, &i))) { + if (level > 0 && (error = xfs_btree_decrement(cur, level, &i))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); goto error0; } @@ -1487,80 +1487,6 @@ xfs_bmdr_to_bmbt( } /* - * Decrement cursor by one record at the level. - * For nonzero levels the leaf-ward information is untouched. - */ -int /* error */ -xfs_bmbt_decrement( - xfs_btree_cur_t *cur, - int level, - int *stat) /* success/failure */ -{ - xfs_bmbt_block_t *block; - xfs_buf_t *bp; - int error; /* error return value */ - xfs_fsblock_t fsbno; - int lev; - xfs_mount_t *mp; - xfs_trans_t *tp; - - XFS_BMBT_TRACE_CURSOR(cur, ENTRY); - XFS_BMBT_TRACE_ARGI(cur, level); - ASSERT(level < cur->bc_nlevels); - - xfs_btree_readahead(cur, level, XFS_BTCUR_LEFTRA); - - if (--cur->bc_ptrs[level] > 0) { - XFS_BMBT_TRACE_CURSOR(cur, EXIT); - *stat = 1; - return 0; - } - block = xfs_bmbt_get_block(cur, level, &bp); -#ifdef DEBUG - if ((error = xfs_btree_check_lblock(cur, block, level, bp))) { - XFS_BMBT_TRACE_CURSOR(cur, ERROR); - return error; - } -#endif - if (be64_to_cpu(block->bb_leftsib) == NULLDFSBNO) { - XFS_BMBT_TRACE_CURSOR(cur, EXIT); - *stat = 0; - return 0; - } - for (lev = level + 1; lev < cur->bc_nlevels; lev++) { - if (--cur->bc_ptrs[lev] > 0) - break; - xfs_btree_readahead(cur, lev, XFS_BTCUR_LEFTRA); - } - if (lev == cur->bc_nlevels) { - XFS_BMBT_TRACE_CURSOR(cur, EXIT); - *stat = 0; - return 0; - } - tp = cur->bc_tp; - mp = cur->bc_mp; - for (block = xfs_bmbt_get_block(cur, lev, &bp); lev > level; ) { - fsbno = be64_to_cpu(*XFS_BMAP_PTR_IADDR(block, cur->bc_ptrs[lev], cur)); - if ((error = xfs_btree_read_bufl(mp, tp, fsbno, 0, &bp, - XFS_BMAP_BTREE_REF))) { - XFS_BMBT_TRACE_CURSOR(cur, ERROR); - return error; - } - lev--; - xfs_btree_setbuf(cur, lev, bp); - block = XFS_BUF_TO_BMBT_BLOCK(bp); - if ((error = xfs_btree_check_lblock(cur, block, lev, bp))) { - XFS_BMBT_TRACE_CURSOR(cur, ERROR); - return error; - } - cur->bc_ptrs[lev] = be16_to_cpu(block->bb_numrecs); - } - XFS_BMBT_TRACE_CURSOR(cur, EXIT); - *stat = 1; - return 0; -} - -/* * Delete the record pointed to by cur. */ int /* error */ @@ -1582,7 +1508,7 @@ xfs_bmbt_delete( if (i == 0) { for (level = 1; level < cur->bc_nlevels; level++) { if (cur->bc_ptrs[level] == 0) { - if ((error = xfs_bmbt_decrement(cur, level, + if ((error = xfs_btree_decrement(cur, level, &i))) { XFS_BMBT_TRACE_CURSOR(cur, ERROR); return error; |