diff options
Diffstat (limited to 'fs/xfs/xfs_ag.h')
| -rw-r--r-- | fs/xfs/xfs_ag.h | 242 |
1 files changed, 64 insertions, 178 deletions
diff --git a/fs/xfs/xfs_ag.h b/fs/xfs/xfs_ag.h index 96b70f7fba397..a96e2ffce0cce 100644 --- a/fs/xfs/xfs_ag.h +++ b/fs/xfs/xfs_ag.h @@ -1,33 +1,19 @@ /* - * Copyright (c) 2000-2003 Silicon Graphics, Inc. All Rights Reserved. + * Copyright (c) 2000-2003,2005 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_AG_H__ #define __XFS_AG_H__ @@ -46,18 +32,9 @@ struct xfs_trans; #define XFS_AGI_MAGIC 0x58414749 /* 'XAGI' */ #define XFS_AGF_VERSION 1 #define XFS_AGI_VERSION 1 -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGF_GOOD_VERSION) -int xfs_agf_good_version(unsigned v); -#define XFS_AGF_GOOD_VERSION(v) xfs_agf_good_version(v) -#else -#define XFS_AGF_GOOD_VERSION(v) ((v) == XFS_AGF_VERSION) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGI_GOOD_VERSION) -int xfs_agi_good_version(unsigned v); -#define XFS_AGI_GOOD_VERSION(v) xfs_agi_good_version(v) -#else -#define XFS_AGI_GOOD_VERSION(v) ((v) == XFS_AGI_VERSION) -#endif + +#define XFS_AGF_GOOD_VERSION(v) ((v) == XFS_AGF_VERSION) +#define XFS_AGI_GOOD_VERSION(v) ((v) == XFS_AGI_VERSION) /* * Btree number 0 is bno, 1 is cnt. This value gives the size of the @@ -71,27 +48,26 @@ int xfs_agi_good_version(unsigned v); * are > 64k, our value cannot be confused for an EFS superblock's. */ -typedef struct xfs_agf -{ +typedef struct xfs_agf { /* * Common allocation group header information */ - __uint32_t agf_magicnum; /* magic number == XFS_AGF_MAGIC */ - __uint32_t agf_versionnum; /* header version == XFS_AGF_VERSION */ - xfs_agnumber_t agf_seqno; /* sequence # starting from 0 */ - xfs_agblock_t agf_length; /* size in blocks of a.g. */ + __be32 agf_magicnum; /* magic number == XFS_AGF_MAGIC */ + __be32 agf_versionnum; /* header version == XFS_AGF_VERSION */ + __be32 agf_seqno; /* sequence # starting from 0 */ + __be32 agf_length; /* size in blocks of a.g. */ /* * Freespace information */ - xfs_agblock_t agf_roots[XFS_BTNUM_AGF]; /* root blocks */ - __uint32_t agf_spare0; /* spare field */ - __uint32_t agf_levels[XFS_BTNUM_AGF]; /* btree levels */ - __uint32_t agf_spare1; /* spare field */ - __uint32_t agf_flfirst; /* first freelist block's index */ - __uint32_t agf_fllast; /* last freelist block's index */ - __uint32_t agf_flcount; /* count of blocks in freelist */ - xfs_extlen_t agf_freeblks; /* total free blocks */ - xfs_extlen_t agf_longest; /* longest free space */ + __be32 agf_roots[XFS_BTNUM_AGF]; /* root blocks */ + __be32 agf_spare0; /* spare field */ + __be32 agf_levels[XFS_BTNUM_AGF]; /* btree levels */ + __be32 agf_spare1; /* spare field */ + __be32 agf_flfirst; /* first freelist block's index */ + __be32 agf_fllast; /* last freelist block's index */ + __be32 agf_flcount; /* count of blocks in freelist */ + __be32 agf_freeblks; /* total free blocks */ + __be32 agf_longest; /* longest free space */ } xfs_agf_t; #define XFS_AGF_MAGICNUM 0x00000001 @@ -110,43 +86,39 @@ typedef struct xfs_agf /* disk block (xfs_daddr_t) in the AG */ #define XFS_AGF_DADDR(mp) ((xfs_daddr_t)(1 << (mp)->m_sectbb_log)) -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGF_BLOCK) -xfs_agblock_t xfs_agf_block(struct xfs_mount *mp); -#define XFS_AGF_BLOCK(mp) xfs_agf_block(mp) -#else -#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp)) -#endif +#define XFS_AGF_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGF_DADDR(mp)) +#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)XFS_BUF_PTR(bp)) + /* * Size of the unlinked inode hash table in the agi. */ #define XFS_AGI_UNLINKED_BUCKETS 64 -typedef struct xfs_agi -{ +typedef struct xfs_agi { /* * Common allocation group header information */ - __uint32_t agi_magicnum; /* magic number == XFS_AGI_MAGIC */ - __uint32_t agi_versionnum; /* header version == XFS_AGI_VERSION */ - xfs_agnumber_t agi_seqno; /* sequence # starting from 0 */ - xfs_agblock_t agi_length; /* size in blocks of a.g. */ + __be32 agi_magicnum; /* magic number == XFS_AGI_MAGIC */ + __be32 agi_versionnum; /* header version == XFS_AGI_VERSION */ + __be32 agi_seqno; /* sequence # starting from 0 */ + __be32 agi_length; /* size in blocks of a.g. */ /* * Inode information * Inodes are mapped by interpreting the inode number, so no * mapping data is needed here. */ - xfs_agino_t agi_count; /* count of allocated inodes */ - xfs_agblock_t agi_root; /* root of inode btree */ - __uint32_t agi_level; /* levels in inode btree */ - xfs_agino_t agi_freecount; /* number of free inodes */ - xfs_agino_t agi_newino; /* new inode just allocated */ - xfs_agino_t agi_dirino; /* last directory inode chunk */ + __be32 agi_count; /* count of allocated inodes */ + __be32 agi_root; /* root of inode btree */ + __be32 agi_level; /* levels in inode btree */ + __be32 agi_freecount; /* number of free inodes */ + __be32 agi_newino; /* new inode just allocated */ + __be32 agi_dirino; /* last directory inode chunk */ /* * Hash table of inodes which have been unlinked but are * still being referenced. */ - xfs_agino_t agi_unlinked[XFS_AGI_UNLINKED_BUCKETS]; + __be32 agi_unlinked[XFS_AGI_UNLINKED_BUCKETS]; } xfs_agi_t; #define XFS_AGI_MAGICNUM 0x00000001 @@ -165,25 +137,17 @@ typedef struct xfs_agi /* disk block (xfs_daddr_t) in the AG */ #define XFS_AGI_DADDR(mp) ((xfs_daddr_t)(2 << (mp)->m_sectbb_log)) -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGI_BLOCK) -xfs_agblock_t xfs_agi_block(struct xfs_mount *mp); -#define XFS_AGI_BLOCK(mp) xfs_agi_block(mp) -#else -#define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp)) -#endif +#define XFS_AGI_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGI_DADDR(mp)) +#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)XFS_BUF_PTR(bp)) /* * The third a.g. block contains the a.g. freelist, an array * of block pointers to blocks owned by the allocation btree code. */ #define XFS_AGFL_DADDR(mp) ((xfs_daddr_t)(3 << (mp)->m_sectbb_log)) -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGFL_BLOCK) -xfs_agblock_t xfs_agfl_block(struct xfs_mount *mp); -#define XFS_AGFL_BLOCK(mp) xfs_agfl_block(mp) -#else -#define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp)) -#endif +#define XFS_AGFL_BLOCK(mp) XFS_HDR_BLOCK(mp, XFS_AGFL_DADDR(mp)) #define XFS_AGFL_SIZE(mp) ((mp)->m_sb.sb_sectsize / sizeof(xfs_agblock_t)) +#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)XFS_BUF_PTR(bp)) typedef struct xfs_agfl { xfs_agblock_t agfl_bno[1]; /* actually XFS_AGFL_SIZE(mp) */ @@ -230,116 +194,38 @@ typedef struct xfs_perag xfs_perag_busy_t *pagb_list; /* unstable blocks */ } xfs_perag_t; -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AG_MAXLEVELS) -int xfs_ag_maxlevels(struct xfs_mount *mp); -#define XFS_AG_MAXLEVELS(mp) xfs_ag_maxlevels(mp) -#else -#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MIN_FREELIST) -int xfs_min_freelist(xfs_agf_t *a, struct xfs_mount *mp); -#define XFS_MIN_FREELIST(a,mp) xfs_min_freelist(a,mp) -#else -#define XFS_MIN_FREELIST(a,mp) \ - XFS_MIN_FREELIST_RAW( \ - INT_GET((a)->agf_levels[XFS_BTNUM_BNOi], ARCH_CONVERT), \ - INT_GET((a)->agf_levels[XFS_BTNUM_CNTi], ARCH_CONVERT), mp) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MIN_FREELIST_PAG) -int xfs_min_freelist_pag(xfs_perag_t *pag, struct xfs_mount *mp); -#define XFS_MIN_FREELIST_PAG(pag,mp) xfs_min_freelist_pag(pag,mp) -#else -#define XFS_MIN_FREELIST_PAG(pag,mp) \ - XFS_MIN_FREELIST_RAW((uint_t)(pag)->pagf_levels[XFS_BTNUM_BNOi], \ - (uint_t)(pag)->pagf_levels[XFS_BTNUM_CNTi], mp) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_MIN_FREELIST_RAW) -int xfs_min_freelist_raw(int bl, int cl, struct xfs_mount *mp); -#define XFS_MIN_FREELIST_RAW(bl,cl,mp) xfs_min_freelist_raw(bl,cl,mp) -#else +#define XFS_AG_MAXLEVELS(mp) ((mp)->m_ag_maxlevels) #define XFS_MIN_FREELIST_RAW(bl,cl,mp) \ - (MIN(bl + 1, XFS_AG_MAXLEVELS(mp)) + \ - MIN(cl + 1, XFS_AG_MAXLEVELS(mp))) -#endif + (MIN(bl + 1, XFS_AG_MAXLEVELS(mp)) + MIN(cl + 1, XFS_AG_MAXLEVELS(mp))) +#define XFS_MIN_FREELIST(a,mp) \ + (XFS_MIN_FREELIST_RAW( \ + be32_to_cpu((a)->agf_levels[XFS_BTNUM_BNOi]), \ + be32_to_cpu((a)->agf_levels[XFS_BTNUM_CNTi]), mp)) +#define XFS_MIN_FREELIST_PAG(pag,mp) \ + (XFS_MIN_FREELIST_RAW( \ + (uint_t)(pag)->pagf_levels[XFS_BTNUM_BNOi], \ + (uint_t)(pag)->pagf_levels[XFS_BTNUM_CNTi], mp)) -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGB_TO_FSB) -xfs_fsblock_t xfs_agb_to_fsb(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno); -#define XFS_AGB_TO_FSB(mp,agno,agbno) xfs_agb_to_fsb(mp,agno,agbno) -#else -#define XFS_AGB_TO_FSB(mp,agno,agbno) \ +#define XFS_AGB_TO_FSB(mp,agno,agbno) \ (((xfs_fsblock_t)(agno) << (mp)->m_sb.sb_agblklog) | (agbno)) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_AGNO) -xfs_agnumber_t xfs_fsb_to_agno(struct xfs_mount *mp, xfs_fsblock_t fsbno); -#define XFS_FSB_TO_AGNO(mp,fsbno) xfs_fsb_to_agno(mp,fsbno) -#else -#define XFS_FSB_TO_AGNO(mp,fsbno) \ +#define XFS_FSB_TO_AGNO(mp,fsbno) \ ((xfs_agnumber_t)((fsbno) >> (mp)->m_sb.sb_agblklog)) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_FSB_TO_AGBNO) -xfs_agblock_t xfs_fsb_to_agbno(struct xfs_mount *mp, xfs_fsblock_t fsbno); -#define XFS_FSB_TO_AGBNO(mp,fsbno) xfs_fsb_to_agbno(mp,fsbno) -#else -#define XFS_FSB_TO_AGBNO(mp,fsbno) \ +#define XFS_FSB_TO_AGBNO(mp,fsbno) \ ((xfs_agblock_t)((fsbno) & XFS_MASK32LO((mp)->m_sb.sb_agblklog))) -#endif - -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AGB_TO_DADDR) -xfs_daddr_t xfs_agb_to_daddr(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_agblock_t agbno); -#define XFS_AGB_TO_DADDR(mp,agno,agbno) xfs_agb_to_daddr(mp,agno,agbno) -#else -#define XFS_AGB_TO_DADDR(mp,agno,agbno) \ - ((xfs_daddr_t)(XFS_FSB_TO_BB(mp, \ - (xfs_fsblock_t)(agno) * (mp)->m_sb.sb_agblocks + (agbno)))) -#endif -/* - * XFS_DADDR_TO_AGNO and XFS_DADDR_TO_AGBNO moved to xfs_mount.h - * to avoid header file ordering change - */ - -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AG_DADDR) -xfs_daddr_t xfs_ag_daddr(struct xfs_mount *mp, xfs_agnumber_t agno, - xfs_daddr_t d); -#define XFS_AG_DADDR(mp,agno,d) xfs_ag_daddr(mp,agno,d) -#else -#define XFS_AG_DADDR(mp,agno,d) (XFS_AGB_TO_DADDR(mp, agno, 0) + (d)) -#endif - -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_AGF) -xfs_agf_t *xfs_buf_to_agf(struct xfs_buf *bp); -#define XFS_BUF_TO_AGF(bp) xfs_buf_to_agf(bp) -#else -#define XFS_BUF_TO_AGF(bp) ((xfs_agf_t *)XFS_BUF_PTR(bp)) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_AGI) -xfs_agi_t *xfs_buf_to_agi(struct xfs_buf *bp); -#define XFS_BUF_TO_AGI(bp) xfs_buf_to_agi(bp) -#else -#define XFS_BUF_TO_AGI(bp) ((xfs_agi_t *)XFS_BUF_PTR(bp)) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BUF_TO_AGFL) -xfs_agfl_t *xfs_buf_to_agfl(struct xfs_buf *bp); -#define XFS_BUF_TO_AGFL(bp) xfs_buf_to_agfl(bp) -#else -#define XFS_BUF_TO_AGFL(bp) ((xfs_agfl_t *)XFS_BUF_PTR(bp)) -#endif +#define XFS_AGB_TO_DADDR(mp,agno,agbno) \ + ((xfs_daddr_t)XFS_FSB_TO_BB(mp, \ + (xfs_fsblock_t)(agno) * (mp)->m_sb.sb_agblocks + (agbno))) +#define XFS_AG_DADDR(mp,agno,d) (XFS_AGB_TO_DADDR(mp, agno, 0) + (d)) /* * For checking for bad ranges of xfs_daddr_t's, covering multiple * allocation groups or a single xfs_daddr_t that's a superblock copy. */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_AG_CHECK_DADDR) -void xfs_ag_check_daddr(struct xfs_mount *mp, xfs_daddr_t d, xfs_extlen_t len); -#define XFS_AG_CHECK_DADDR(mp,d,len) xfs_ag_check_daddr(mp,d,len) -#else #define XFS_AG_CHECK_DADDR(mp,d,len) \ ((len) == 1 ? \ ASSERT((d) == XFS_SB_DADDR || \ XFS_DADDR_TO_AGBNO(mp, d) != XFS_SB_DADDR) : \ ASSERT(XFS_DADDR_TO_AGNO(mp, d) == \ XFS_DADDR_TO_AGNO(mp, (d) + (len) - 1))) -#endif #endif /* __XFS_AG_H__ */ |