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Diffstat (limited to 'fs/xfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/xfs_btree.h | 592 |
1 files changed, 592 insertions, 0 deletions
diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h new file mode 100644 index 000000000000..93872bba41f5 --- /dev/null +++ b/fs/xfs/xfs_btree.h @@ -0,0 +1,592 @@ +/* + * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it would be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. + * + * Further, this software is distributed without any warranty that it is + * free of the rightful claim of any third person regarding infringement + * or the like. Any license provided herein, whether implied or + * otherwise, applies only to this software file. Patent licenses, if + * any, provided herein do not apply to combinations of this program with + * other software, or any other product whatsoever. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write the Free Software Foundation, Inc., 59 + * Temple Place - Suite 330, Boston MA 02111-1307, USA. + * + * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, + * Mountain View, CA 94043, or: + * + * http://www.sgi.com + * + * For further information regarding this notice, see: + * + * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ + */ +#ifndef __XFS_BTREE_H__ +#define __XFS_BTREE_H__ + +struct xfs_buf; +struct xfs_bmap_free; +struct xfs_inode; +struct xfs_mount; +struct xfs_trans; + +/* + * This nonsense is to make -wlint happy. + */ +#define XFS_LOOKUP_EQ ((xfs_lookup_t)XFS_LOOKUP_EQi) +#define XFS_LOOKUP_LE ((xfs_lookup_t)XFS_LOOKUP_LEi) +#define XFS_LOOKUP_GE ((xfs_lookup_t)XFS_LOOKUP_GEi) + +#define XFS_BTNUM_BNO ((xfs_btnum_t)XFS_BTNUM_BNOi) +#define XFS_BTNUM_CNT ((xfs_btnum_t)XFS_BTNUM_CNTi) +#define XFS_BTNUM_BMAP ((xfs_btnum_t)XFS_BTNUM_BMAPi) +#define XFS_BTNUM_INO ((xfs_btnum_t)XFS_BTNUM_INOi) + +/* + * Short form header: space allocation btrees. + */ +typedef struct xfs_btree_sblock +{ + __uint32_t bb_magic; /* magic number for block type */ + __uint16_t bb_level; /* 0 is a leaf */ + __uint16_t bb_numrecs; /* current # of data records */ + xfs_agblock_t bb_leftsib; /* left sibling block or NULLAGBLOCK */ + xfs_agblock_t bb_rightsib; /* right sibling block or NULLAGBLOCK */ +} xfs_btree_sblock_t; + +/* + * Long form header: bmap btrees. + */ +typedef struct xfs_btree_lblock +{ + __uint32_t bb_magic; /* magic number for block type */ + __uint16_t bb_level; /* 0 is a leaf */ + __uint16_t bb_numrecs; /* current # of data records */ + xfs_dfsbno_t bb_leftsib; /* left sibling block or NULLDFSBNO */ + xfs_dfsbno_t bb_rightsib; /* right sibling block or NULLDFSBNO */ +} xfs_btree_lblock_t; + +/* + * Combined header and structure, used by common code. + */ +typedef struct xfs_btree_hdr +{ + __uint32_t bb_magic; /* magic number for block type */ + __uint16_t bb_level; /* 0 is a leaf */ + __uint16_t bb_numrecs; /* current # of data records */ +} xfs_btree_hdr_t; + +typedef struct xfs_btree_block +{ + xfs_btree_hdr_t bb_h; /* header */ + union { + struct { + xfs_agblock_t bb_leftsib; + xfs_agblock_t bb_rightsib; + } s; /* short form pointers */ + struct { + xfs_dfsbno_t bb_leftsib; + xfs_dfsbno_t bb_rightsib; + } l; /* long form pointers */ + } bb_u; /* rest */ +} xfs_btree_block_t; + +/* + * For logging record fields. + */ +#define XFS_BB_MAGIC 0x01 +#define XFS_BB_LEVEL 0x02 +#define XFS_BB_NUMRECS 0x04 +#define XFS_BB_LEFTSIB 0x08 +#define XFS_BB_RIGHTSIB 0x10 +#define XFS_BB_NUM_BITS 5 +#define XFS_BB_ALL_BITS ((1 << XFS_BB_NUM_BITS) - 1) + +/* + * Boolean to select which form of xfs_btree_block_t.bb_u to use. + */ +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BTREE_LONG_PTRS) +int xfs_btree_long_ptrs(xfs_btnum_t btnum); +#define XFS_BTREE_LONG_PTRS(btnum) ((btnum) == XFS_BTNUM_BMAP) +#else +#define XFS_BTREE_LONG_PTRS(btnum) ((btnum) == XFS_BTNUM_BMAP) +#endif + +/* + * Magic numbers for btree blocks. + */ +extern const __uint32_t xfs_magics[]; + +/* + * Maximum and minimum records in a btree block. + * Given block size, type prefix, and leaf flag (0 or 1). + * The divisor below is equivalent to lf ? (e1) : (e2) but that produces + * compiler warnings. + */ +#define XFS_BTREE_BLOCK_MAXRECS(bsz,t,lf) \ + ((int)(((bsz) - (uint)sizeof(t ## _block_t)) / \ + (((lf) * (uint)sizeof(t ## _rec_t)) + \ + ((1 - (lf)) * \ + ((uint)sizeof(t ## _key_t) + (uint)sizeof(t ## _ptr_t)))))) +#define XFS_BTREE_BLOCK_MINRECS(bsz,t,lf) \ + (XFS_BTREE_BLOCK_MAXRECS(bsz,t,lf) / 2) + +/* + * Record, key, and pointer address calculation macros. + * Given block size, type prefix, block pointer, and index of requested entry + * (first entry numbered 1). + */ +#define XFS_BTREE_REC_ADDR(bsz,t,bb,i,mxr) \ + ((t ## _rec_t *)((char *)(bb) + sizeof(t ## _block_t) + \ + ((i) - 1) * sizeof(t ## _rec_t))) +#define XFS_BTREE_KEY_ADDR(bsz,t,bb,i,mxr) \ + ((t ## _key_t *)((char *)(bb) + sizeof(t ## _block_t) + \ + ((i) - 1) * sizeof(t ## _key_t))) +#define XFS_BTREE_PTR_ADDR(bsz,t,bb,i,mxr) \ + ((t ## _ptr_t *)((char *)(bb) + sizeof(t ## _block_t) + \ + (mxr) * sizeof(t ## _key_t) + ((i) - 1) * sizeof(t ## _ptr_t))) + +#define XFS_BTREE_MAXLEVELS 8 /* max of all btrees */ + +/* + * Btree cursor structure. + * This collects all information needed by the btree code in one place. + */ +typedef struct xfs_btree_cur +{ + struct xfs_trans *bc_tp; /* transaction we're in, if any */ + struct xfs_mount *bc_mp; /* file system mount struct */ + union { + xfs_alloc_rec_t a; + xfs_bmbt_irec_t b; + xfs_inobt_rec_t i; + } bc_rec; /* current insert/search record value */ + struct xfs_buf *bc_bufs[XFS_BTREE_MAXLEVELS]; /* buf ptr per level */ + int bc_ptrs[XFS_BTREE_MAXLEVELS]; /* key/record # */ + __uint8_t bc_ra[XFS_BTREE_MAXLEVELS]; /* readahead bits */ +#define XFS_BTCUR_LEFTRA 1 /* left sibling has been read-ahead */ +#define XFS_BTCUR_RIGHTRA 2 /* right sibling has been read-ahead */ + __uint8_t bc_nlevels; /* number of levels in the tree */ + __uint8_t bc_blocklog; /* log2(blocksize) of btree blocks */ + xfs_btnum_t bc_btnum; /* identifies which btree type */ + union { + struct { /* needed for BNO, CNT */ + struct xfs_buf *agbp; /* agf buffer pointer */ + xfs_agnumber_t agno; /* ag number */ + } a; + struct { /* needed for BMAP */ + struct xfs_inode *ip; /* pointer to our inode */ + struct xfs_bmap_free *flist; /* list to free after */ + xfs_fsblock_t firstblock; /* 1st blk allocated */ + int allocated; /* count of alloced */ + short forksize; /* fork's inode space */ + char whichfork; /* data or attr fork */ + char flags; /* flags */ +#define XFS_BTCUR_BPRV_WASDEL 1 /* was delayed */ + } b; + struct { /* needed for INO */ + struct xfs_buf *agbp; /* agi buffer pointer */ + xfs_agnumber_t agno; /* ag number */ + } i; + } bc_private; /* per-btree type data */ +} xfs_btree_cur_t; + +#define XFS_BTREE_NOERROR 0 +#define XFS_BTREE_ERROR 1 + +/* + * Convert from buffer to btree block header. + */ +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_BLOCK) +xfs_btree_block_t *xfs_buf_to_block(struct xfs_buf *bp); +#define XFS_BUF_TO_BLOCK(bp) xfs_buf_to_block(bp) +#else +#define XFS_BUF_TO_BLOCK(bp) ((xfs_btree_block_t *)(XFS_BUF_PTR(bp))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_LBLOCK) +xfs_btree_lblock_t *xfs_buf_to_lblock(struct xfs_buf *bp); +#define XFS_BUF_TO_LBLOCK(bp) xfs_buf_to_lblock(bp) +#else +#define XFS_BUF_TO_LBLOCK(bp) ((xfs_btree_lblock_t *)(XFS_BUF_PTR(bp))) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_SBLOCK) +xfs_btree_sblock_t *xfs_buf_to_sblock(struct xfs_buf *bp); +#define XFS_BUF_TO_SBLOCK(bp) xfs_buf_to_sblock(bp) +#else +#define XFS_BUF_TO_SBLOCK(bp) ((xfs_btree_sblock_t *)(XFS_BUF_PTR(bp))) +#endif + +#ifdef __KERNEL__ + +#ifdef DEBUG +/* + * Debug routine: check that block header is ok. + */ +void +xfs_btree_check_block( + xfs_btree_cur_t *cur, /* btree cursor */ + xfs_btree_block_t *block, /* generic btree block pointer */ + int level, /* level of the btree block */ + struct xfs_buf *bp); /* buffer containing block, if any */ + +/* + * Debug routine: check that keys are in the right order. + */ +void +xfs_btree_check_key( + xfs_btnum_t btnum, /* btree identifier */ + void *ak1, /* pointer to left (lower) key */ + void *ak2); /* pointer to right (higher) key */ + +/* + * Debug routine: check that records are in the right order. + */ +void +xfs_btree_check_rec( + xfs_btnum_t btnum, /* btree identifier */ + void *ar1, /* pointer to left (lower) record */ + void *ar2); /* pointer to right (higher) record */ +#else +#define xfs_btree_check_block(a,b,c,d) +#define xfs_btree_check_key(a,b,c) +#define xfs_btree_check_rec(a,b,c) +#endif /* DEBUG */ + +/* + * Checking routine: check that long form block header is ok. + */ +int /* error (0 or EFSCORRUPTED) */ +xfs_btree_check_lblock( + xfs_btree_cur_t *cur, /* btree cursor */ + xfs_btree_lblock_t *block, /* btree long form block pointer */ + int level, /* level of the btree block */ + struct xfs_buf *bp); /* buffer containing block, if any */ + +/* + * Checking routine: check that (long) pointer is ok. + */ +int /* error (0 or EFSCORRUPTED) */ +xfs_btree_check_lptr( + xfs_btree_cur_t *cur, /* btree cursor */ + xfs_dfsbno_t ptr, /* btree block disk address */ + int level); /* btree block level */ + +/* + * Checking routine: check that short form block header is ok. + */ +int /* error (0 or EFSCORRUPTED) */ +xfs_btree_check_sblock( + xfs_btree_cur_t *cur, /* btree cursor */ + xfs_btree_sblock_t *block, /* btree short form block pointer */ + int level, /* level of the btree block */ + struct xfs_buf *bp); /* buffer containing block */ + +/* + * Checking routine: check that (short) pointer is ok. + */ +int /* error (0 or EFSCORRUPTED) */ +xfs_btree_check_sptr( + xfs_btree_cur_t *cur, /* btree cursor */ + xfs_agblock_t ptr, /* btree block disk address */ + int level); /* btree block level */ + +/* + * Delete the btree cursor. + */ +void +xfs_btree_del_cursor( + xfs_btree_cur_t *cur, /* btree cursor */ + int error); /* del because of error */ + +/* + * Duplicate the btree cursor. + * Allocate a new one, copy the record, re-get the buffers. + */ +int /* error */ +xfs_btree_dup_cursor( + xfs_btree_cur_t *cur, /* input cursor */ + xfs_btree_cur_t **ncur);/* output cursor */ + +/* + * Change the cursor to point to the first record in the current block + * at the given level. Other levels are unaffected. + */ +int /* success=1, failure=0 */ +xfs_btree_firstrec( + xfs_btree_cur_t *cur, /* btree cursor */ + int level); /* level to change */ + +/* + * Retrieve the block pointer from the cursor at the given level. + * This may be a bmap btree root or from a buffer. + */ +xfs_btree_block_t * /* generic btree block pointer */ +xfs_btree_get_block( + xfs_btree_cur_t *cur, /* btree cursor */ + int level, /* level in btree */ + struct xfs_buf **bpp); /* buffer containing the block */ + +/* + * Get a buffer for the block, return it with no data read. + * Long-form addressing. + */ +struct xfs_buf * /* buffer for fsbno */ +xfs_btree_get_bufl( + struct xfs_mount *mp, /* file system mount point */ + struct xfs_trans *tp, /* transaction pointer */ + xfs_fsblock_t fsbno, /* file system block number */ + uint lock); /* lock flags for get_buf */ + +/* + * Get a buffer for the block, return it with no data read. + * Short-form addressing. + */ +struct xfs_buf * /* buffer for agno/agbno */ +xfs_btree_get_bufs( + struct xfs_mount *mp, /* file system mount point */ + struct xfs_trans *tp, /* transaction pointer */ + xfs_agnumber_t agno, /* allocation group number */ + xfs_agblock_t agbno, /* allocation group block number */ + uint lock); /* lock flags for get_buf */ + +/* + * Allocate a new btree cursor. + * The cursor is either for allocation (A) or bmap (B). + */ +xfs_btree_cur_t * /* new btree cursor */ +xfs_btree_init_cursor( + struct xfs_mount *mp, /* file system mount point */ + struct xfs_trans *tp, /* transaction pointer */ + struct xfs_buf *agbp, /* (A only) buffer for agf structure */ + xfs_agnumber_t agno, /* (A only) allocation group number */ + xfs_btnum_t btnum, /* btree identifier */ + struct xfs_inode *ip, /* (B only) inode owning the btree */ + int whichfork); /* (B only) data/attr fork */ + +/* + * Check for the cursor referring to the last block at the given level. + */ +int /* 1=is last block, 0=not last block */ +xfs_btree_islastblock( + xfs_btree_cur_t *cur, /* btree cursor */ + int level); /* level to check */ + +/* + * Change the cursor to point to the last record in the current block + * at the given level. Other levels are unaffected. + */ +int /* success=1, failure=0 */ +xfs_btree_lastrec( + xfs_btree_cur_t *cur, /* btree cursor */ + int level); /* level to change */ + +/* + * Compute first and last byte offsets for the fields given. + * Interprets the offsets table, which contains struct field offsets. + */ +void +xfs_btree_offsets( + __int64_t fields, /* bitmask of fields */ + const short *offsets,/* table of field offsets */ + int nbits, /* number of bits to inspect */ + int *first, /* output: first byte offset */ + int *last); /* output: last byte offset */ + +/* + * Get a buffer for the block, return it read in. + * Long-form addressing. + */ +int /* error */ +xfs_btree_read_bufl( + struct xfs_mount *mp, /* file system mount point */ + struct xfs_trans *tp, /* transaction pointer */ + xfs_fsblock_t fsbno, /* file system block number */ + uint lock, /* lock flags for read_buf */ + struct xfs_buf **bpp, /* buffer for fsbno */ + int refval);/* ref count value for buffer */ + +/* + * Get a buffer for the block, return it read in. + * Short-form addressing. + */ +int /* error */ +xfs_btree_read_bufs( + struct xfs_mount *mp, /* file system mount point */ + struct xfs_trans *tp, /* transaction pointer */ + xfs_agnumber_t agno, /* allocation group number */ + xfs_agblock_t agbno, /* allocation group block number */ + uint lock, /* lock flags for read_buf */ + struct xfs_buf **bpp, /* buffer for agno/agbno */ + int refval);/* ref count value for buffer */ + +/* + * Read-ahead the block, don't wait for it, don't return a buffer. + * Long-form addressing. + */ +void /* error */ +xfs_btree_reada_bufl( + struct xfs_mount *mp, /* file system mount point */ + xfs_fsblock_t fsbno, /* file system block number */ + xfs_extlen_t count); /* count of filesystem blocks */ + +/* + * Read-ahead the block, don't wait for it, don't return a buffer. + * Short-form addressing. + */ +void /* error */ +xfs_btree_reada_bufs( + struct xfs_mount *mp, /* file system mount point */ + xfs_agnumber_t agno, /* allocation group number */ + xfs_agblock_t agbno, /* allocation group block number */ + xfs_extlen_t count); /* count of filesystem blocks */ + +/* + * Read-ahead btree blocks, at the given level. + * Bits in lr are set from XFS_BTCUR_{LEFT,RIGHT}RA. + */ +int /* readahead block count */ +xfs_btree_readahead_core( + xfs_btree_cur_t *cur, /* btree cursor */ + int lev, /* level in btree */ + int lr); /* left/right bits */ + +static inline int /* readahead block count */ +xfs_btree_readahead( + xfs_btree_cur_t *cur, /* btree cursor */ + int lev, /* level in btree */ + int lr) /* left/right bits */ +{ + if ((cur->bc_ra[lev] | lr) == cur->bc_ra[lev]) + return 0; + + return xfs_btree_readahead_core(cur, lev, lr); +} + + +/* + * Set the buffer for level "lev" in the cursor to bp, releasing + * any previous buffer. + */ +void +xfs_btree_setbuf( + xfs_btree_cur_t *cur, /* btree cursor */ + int lev, /* level in btree */ + struct xfs_buf *bp); /* new buffer to set */ + +#endif /* __KERNEL__ */ + + +/* + * Min and max functions for extlen, agblock, fileoff, and filblks types. + */ +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTLEN_MIN) +xfs_extlen_t xfs_extlen_min(xfs_extlen_t a, xfs_extlen_t b); +#define XFS_EXTLEN_MIN(a,b) xfs_extlen_min(a,b) +#else +#define XFS_EXTLEN_MIN(a,b) \ + ((xfs_extlen_t)(a) < (xfs_extlen_t)(b) ? \ + (xfs_extlen_t)(a) : (xfs_extlen_t)(b)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_EXTLEN_MAX) +xfs_extlen_t xfs_extlen_max(xfs_extlen_t a, xfs_extlen_t b); +#define XFS_EXTLEN_MAX(a,b) xfs_extlen_max(a,b) +#else +#define XFS_EXTLEN_MAX(a,b) \ + ((xfs_extlen_t)(a) > (xfs_extlen_t)(b) ? \ + (xfs_extlen_t)(a) : (xfs_extlen_t)(b)) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGBLOCK_MIN) +xfs_agblock_t xfs_agblock_min(xfs_agblock_t a, xfs_agblock_t b); +#define XFS_AGBLOCK_MIN(a,b) xfs_agblock_min(a,b) +#else +#define XFS_AGBLOCK_MIN(a,b) \ + ((xfs_agblock_t)(a) < (xfs_agblock_t)(b) ? \ + (xfs_agblock_t)(a) : (xfs_agblock_t)(b)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGBLOCK_MAX) +xfs_agblock_t xfs_agblock_max(xfs_agblock_t a, xfs_agblock_t b); +#define XFS_AGBLOCK_MAX(a,b) xfs_agblock_max(a,b) +#else +#define XFS_AGBLOCK_MAX(a,b) \ + ((xfs_agblock_t)(a) > (xfs_agblock_t)(b) ? \ + (xfs_agblock_t)(a) : (xfs_agblock_t)(b)) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILEOFF_MIN) +xfs_fileoff_t xfs_fileoff_min(xfs_fileoff_t a, xfs_fileoff_t b); +#define XFS_FILEOFF_MIN(a,b) xfs_fileoff_min(a,b) +#else +#define XFS_FILEOFF_MIN(a,b) \ + ((xfs_fileoff_t)(a) < (xfs_fileoff_t)(b) ? \ + (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILEOFF_MAX) +xfs_fileoff_t xfs_fileoff_max(xfs_fileoff_t a, xfs_fileoff_t b); +#define XFS_FILEOFF_MAX(a,b) xfs_fileoff_max(a,b) +#else +#define XFS_FILEOFF_MAX(a,b) \ + ((xfs_fileoff_t)(a) > (xfs_fileoff_t)(b) ? \ + (xfs_fileoff_t)(a) : (xfs_fileoff_t)(b)) +#endif + +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILBLKS_MIN) +xfs_filblks_t xfs_filblks_min(xfs_filblks_t a, xfs_filblks_t b); +#define XFS_FILBLKS_MIN(a,b) xfs_filblks_min(a,b) +#else +#define XFS_FILBLKS_MIN(a,b) \ + ((xfs_filblks_t)(a) < (xfs_filblks_t)(b) ? \ + (xfs_filblks_t)(a) : (xfs_filblks_t)(b)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FILBLKS_MAX) +xfs_filblks_t xfs_filblks_max(xfs_filblks_t a, xfs_filblks_t b); +#define XFS_FILBLKS_MAX(a,b) xfs_filblks_max(a,b) +#else +#define XFS_FILBLKS_MAX(a,b) \ + ((xfs_filblks_t)(a) > (xfs_filblks_t)(b) ? \ + (xfs_filblks_t)(a) : (xfs_filblks_t)(b)) +#endif +#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_SANITY_CHECK) +int xfs_fsb_sanity_check(struct xfs_mount *mp, xfs_fsblock_t fsb); +#define XFS_FSB_SANITY_CHECK(mp,fsb) xfs_fsb_sanity_check(mp,fsb) +#else +#define XFS_FSB_SANITY_CHECK(mp,fsb) \ + (XFS_FSB_TO_AGNO(mp, fsb) < mp->m_sb.sb_agcount && \ + XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks) +#endif + +/* + * Macros to set EFSCORRUPTED & return/branch. + */ +#define XFS_WANT_CORRUPTED_GOTO(x,l) \ + { \ + int fs_is_ok = (x); \ + ASSERT(fs_is_ok); \ + if (unlikely(!fs_is_ok)) { \ + XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_GOTO", \ + XFS_ERRLEVEL_LOW, NULL); \ + error = XFS_ERROR(EFSCORRUPTED); \ + goto l; \ + } \ + } + +#define XFS_WANT_CORRUPTED_RETURN(x) \ + { \ + int fs_is_ok = (x); \ + ASSERT(fs_is_ok); \ + if (unlikely(!fs_is_ok)) { \ + XFS_ERROR_REPORT("XFS_WANT_CORRUPTED_RETURN", \ + XFS_ERRLEVEL_LOW, NULL); \ + return XFS_ERROR(EFSCORRUPTED); \ + } \ + } + +#endif /* __XFS_BTREE_H__ */ |