X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_btree.h;h=1f528a2a37545d858d40577a948e56ee7699d479;hb=9e88ba4e45ecad2425c4cc4e0861a26f4e36c6da;hp=09b4e1532a351da8e00a1c372b01380ff82687a5;hpb=3357d4c75f1fb67e7304998c4ad4e9a9fed66fa4;p=linux-2.6 diff --git a/fs/xfs/xfs_btree.h b/fs/xfs/xfs_btree.h index 09b4e1532a..1f528a2a37 100644 --- a/fs/xfs/xfs_btree.h +++ b/fs/xfs/xfs_btree.h @@ -1,33 +1,19 @@ /* - * Copyright (c) 2000-2001 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000-2001,2005 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 + * This program is free software; you can redistribute it and/or + * modify it under the terms 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. + * 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. See the + * GNU General Public License for more details. * - * 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/ + * You should have received a copy of the GNU General Public License + * along with this program; if not, write the Free Software Foundation, + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __XFS_BTREE_H__ #define __XFS_BTREE_H__ @@ -38,6 +24,8 @@ struct xfs_inode; struct xfs_mount; struct xfs_trans; +extern kmem_zone_t *xfs_btree_cur_zone; + /* * This nonsense is to make -wlint happy. */ @@ -53,25 +41,23 @@ struct xfs_trans; /* * 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 */ +typedef struct xfs_btree_sblock { + __be32 bb_magic; /* magic number for block type */ + __be16 bb_level; /* 0 is a leaf */ + __be16 bb_numrecs; /* current # of data records */ + __be32 bb_leftsib; /* left sibling block or NULLAGBLOCK */ + __be32 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 */ +typedef struct xfs_btree_lblock { + __be32 bb_magic; /* magic number for block type */ + __be16 bb_level; /* 0 is a leaf */ + __be16 bb_numrecs; /* current # of data records */ + __be64 bb_leftsib; /* left sibling block or NULLDFSBNO */ + __be64 bb_rightsib; /* right sibling block or NULLDFSBNO */ } xfs_btree_lblock_t; /* @@ -79,24 +65,23 @@ typedef struct xfs_btree_lblock */ 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 */ + __be32 bb_magic; /* magic number for block type */ + __be16 bb_level; /* 0 is a leaf */ + __be16 bb_numrecs; /* current # of data records */ } xfs_btree_hdr_t; -typedef struct xfs_btree_block -{ +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 */ + union { + struct { + __be32 bb_leftsib; + __be32 bb_rightsib; + } s; /* short form pointers */ struct { - xfs_dfsbno_t bb_leftsib; - xfs_dfsbno_t bb_rightsib; - } l; /* long form pointers */ - } bb_u; /* rest */ + __be64 bb_leftsib; + __be64 bb_rightsib; + } l; /* long form pointers */ + } bb_u; /* rest */ } xfs_btree_block_t; /* @@ -113,12 +98,7 @@ typedef struct xfs_btree_block /* * 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. @@ -144,13 +124,13 @@ extern const __uint32_t xfs_magics[]; * 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) \ +#define XFS_BTREE_REC_ADDR(t,bb,i) \ ((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) \ +#define XFS_BTREE_KEY_ADDR(t,bb,i) \ ((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) \ +#define XFS_BTREE_PTR_ADDR(t,bb,i,mxr) \ ((t ## _ptr_t *)((char *)(bb) + sizeof(t ## _block_t) + \ (mxr) * sizeof(t ## _key_t) + ((i) - 1) * sizeof(t ## _ptr_t))) @@ -165,9 +145,9 @@ 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_alloc_rec_incore_t a; xfs_bmbt_irec_t b; - xfs_inobt_rec_t i; + xfs_inobt_rec_incore_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 # */ @@ -178,8 +158,8 @@ typedef struct xfs_btree_cur __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 */ + struct { /* needed for BNO, CNT, INO */ + struct xfs_buf *agbp; /* agf/agi buffer pointer */ xfs_agnumber_t agno; /* ag number */ } a; struct { /* needed for BMAP */ @@ -192,10 +172,6 @@ typedef struct xfs_btree_cur 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; @@ -205,24 +181,10 @@ typedef struct xfs_btree_cur /* * 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 +#define XFS_BUF_TO_BLOCK(bp) ((xfs_btree_block_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_LBLOCK(bp) ((xfs_btree_lblock_t *)XFS_BUF_PTR(bp)) +#define XFS_BUF_TO_SBLOCK(bp) ((xfs_btree_sblock_t *)XFS_BUF_PTR(bp)) + #ifdef __KERNEL__ @@ -279,6 +241,9 @@ xfs_btree_check_lptr( xfs_dfsbno_t ptr, /* btree block disk address */ int level); /* btree block level */ +#define xfs_btree_check_lptr_disk(cur, ptr, level) \ + xfs_btree_check_lptr(cur, be64_to_cpu(ptr), level) + /* * Checking routine: check that short form block header is ok. */ @@ -477,106 +442,17 @@ xfs_btree_setbuf( /* * 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_EXTLEN_MIN(a,b) min_t(xfs_extlen_t, (a), (b)) +#define XFS_EXTLEN_MAX(a,b) max_t(xfs_extlen_t, (a), (b)) +#define XFS_AGBLOCK_MIN(a,b) min_t(xfs_agblock_t, (a), (b)) +#define XFS_AGBLOCK_MAX(a,b) max_t(xfs_agblock_t, (a), (b)) +#define XFS_FILEOFF_MIN(a,b) min_t(xfs_fileoff_t, (a), (b)) +#define XFS_FILEOFF_MAX(a,b) max_t(xfs_fileoff_t, (a), (b)) +#define XFS_FILBLKS_MIN(a,b) min_t(xfs_filblks_t, (a), (b)) +#define XFS_FILBLKS_MAX(a,b) max_t(xfs_filblks_t, (a), (b)) + #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); \ - } \ - } + XFS_FSB_TO_AGBNO(mp, fsb) < mp->m_sb.sb_agblocks) #endif /* __XFS_BTREE_H__ */