X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=fs%2Fxfs%2Fxfs_inode.h;h=d10b76ed1e5bd0c6f99689998f5a342a12939bad;hb=16c70f8c1b54b61c3b951b6fb220df250fe09b32;hp=3d427c2b065c9b907dae89b4b01337c06a3143c9;hpb=6a77f38946aaee1cd85eeec6cf4229b204c15071;p=linux-2.6.git diff --git a/fs/xfs/xfs_inode.h b/fs/xfs/xfs_inode.h index 3d427c2b0..d10b76ed1 100644 --- a/fs/xfs/xfs_inode.h +++ b/fs/xfs/xfs_inode.h @@ -1,42 +1,61 @@ /* - * 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_INODE_H__ #define __XFS_INODE_H__ +/* + * Fork identifiers. + */ +#define XFS_DATA_FORK 0 +#define XFS_ATTR_FORK 1 + +/* + * The following xfs_ext_irec_t struct introduces a second (top) level + * to the in-core extent allocation scheme. These structs are allocated + * in a contiguous block, creating an indirection array where each entry + * (irec) contains a pointer to a buffer of in-core extent records which + * it manages. Each extent buffer is 4k in size, since 4k is the system + * page size on Linux i386 and systems with larger page sizes don't seem + * to gain much, if anything, by using their native page size as the + * extent buffer size. Also, using 4k extent buffers everywhere provides + * a consistent interface for CXFS across different platforms. + * + * There is currently no limit on the number of irec's (extent lists) + * allowed, so heavily fragmented files may require an indirection array + * which spans multiple system pages of memory. The number of extents + * which would require this amount of contiguous memory is very large + * and should not cause problems in the foreseeable future. However, + * if the memory needed for the contiguous array ever becomes a problem, + * it is possible that a third level of indirection may be required. + */ +typedef struct xfs_ext_irec { + xfs_bmbt_rec_t *er_extbuf; /* block of extent records */ + xfs_extnum_t er_extoff; /* extent offset in file */ + xfs_extnum_t er_extcount; /* number of extents in page/block */ +} xfs_ext_irec_t; + /* * File incore extent information, present for each of data & attr forks. */ -#define XFS_INLINE_EXTS 2 -#define XFS_INLINE_DATA 32 +#define XFS_IEXT_BUFSZ 4096 +#define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) +#define XFS_INLINE_EXTS 2 +#define XFS_INLINE_DATA 32 typedef struct xfs_ifork { int if_bytes; /* bytes in if_u1 */ int if_real_bytes; /* bytes allocated in if_u1 */ @@ -47,6 +66,7 @@ typedef struct xfs_ifork { xfs_extnum_t if_lastex; /* last if_extents used */ union { xfs_bmbt_rec_t *if_extents; /* linear map file exts */ + xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ char *if_data; /* inline file data */ } if_u1; union { @@ -69,26 +89,22 @@ typedef struct xfs_ifork { /* * Per-fork incore inode flags. */ -#define XFS_IFINLINE 0x0001 /* Inline data is read in */ -#define XFS_IFEXTENTS 0x0002 /* All extent pointers are read in */ -#define XFS_IFBROOT 0x0004 /* i_broot points to the bmap b-tree root */ +#define XFS_IFINLINE 0x01 /* Inline data is read in */ +#define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ +#define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ +#define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ /* - * Flags for xfs_imap() and xfs_dilocate(). + * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate(). */ -#define XFS_IMAP_LOOKUP 0x1 - -/* - * Maximum number of extent pointers in if_u1.if_extents. - */ -#define XFS_MAX_INCORE_EXTENTS 32768 - +#define XFS_IMAP_LOOKUP 0x1 +#define XFS_IMAP_BULKSTAT 0x2 #ifdef __KERNEL__ struct bhv_desc; +struct bhv_vnode; struct cred; struct ktrace; -struct vnode; struct xfs_buf; struct xfs_bmap_free; struct xfs_bmbt_irec; @@ -107,24 +123,6 @@ extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); #define xfs_ilock_trace(i,n,f,ra) #endif -/* - * This structure is used to communicate which extents of a file - * were holes when a write started from xfs_write_file() to - * xfs_strat_read(). This is necessary so that we can know which - * blocks need to be zeroed when they are read in in xfs_strat_read() - * if they weren\'t allocated when the buffer given to xfs_strat_read() - * was mapped. - * - * We keep a list of these attached to the inode. The list is - * protected by the inode lock and the fact that the io lock is - * held exclusively by writers. - */ -typedef struct xfs_gap { - struct xfs_gap *xg_next; - xfs_fileoff_t xg_offset_fsb; - xfs_extlen_t xg_count_fsb; -} xfs_gap_t; - typedef struct dm_attrs_s { __uint32_t da_dmevmask; /* DMIG event mask */ __uint16_t da_dmstate; /* DMIG state info */ @@ -191,6 +189,7 @@ typedef struct xfs_ihash { */ typedef struct xfs_chashlist { struct xfs_chashlist *chl_next; + struct xfs_chashlist *chl_prev; struct xfs_inode *chl_ip; xfs_daddr_t chl_blkno; /* starting block number of * the cluster */ @@ -311,60 +310,16 @@ typedef struct xfs_inode { /* * Fork handling. */ -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_PTR) -xfs_ifork_t *xfs_ifork_ptr(xfs_inode_t *ip, int w); -#define XFS_IFORK_PTR(ip,w) xfs_ifork_ptr(ip,w) -#else -#define XFS_IFORK_PTR(ip,w) ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_Q) -int xfs_ifork_q(xfs_inode_t *ip); -#define XFS_IFORK_Q(ip) xfs_ifork_q(ip) -#else +#define XFS_IFORK_PTR(ip,w) \ + ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp) #define XFS_IFORK_Q(ip) XFS_CFORK_Q(&(ip)->i_d) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_DSIZE) -int xfs_ifork_dsize(xfs_inode_t *ip); -#define XFS_IFORK_DSIZE(ip) xfs_ifork_dsize(ip) -#else #define XFS_IFORK_DSIZE(ip) XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_ASIZE) -int xfs_ifork_asize(xfs_inode_t *ip); -#define XFS_IFORK_ASIZE(ip) xfs_ifork_asize(ip) -#else #define XFS_IFORK_ASIZE(ip) XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_SIZE) -int xfs_ifork_size(xfs_inode_t *ip, int w); -#define XFS_IFORK_SIZE(ip,w) xfs_ifork_size(ip,w) -#else #define XFS_IFORK_SIZE(ip,w) XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_FORMAT) -int xfs_ifork_format(xfs_inode_t *ip, int w); -#define XFS_IFORK_FORMAT(ip,w) xfs_ifork_format(ip,w) -#else #define XFS_IFORK_FORMAT(ip,w) XFS_CFORK_FORMAT(&ip->i_d, w) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_FMT_SET) -void xfs_ifork_fmt_set(xfs_inode_t *ip, int w, int n); -#define XFS_IFORK_FMT_SET(ip,w,n) xfs_ifork_fmt_set(ip,w,n) -#else #define XFS_IFORK_FMT_SET(ip,w,n) XFS_CFORK_FMT_SET(&ip->i_d, w, n) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_NEXTENTS) -int xfs_ifork_nextents(xfs_inode_t *ip, int w); -#define XFS_IFORK_NEXTENTS(ip,w) xfs_ifork_nextents(ip,w) -#else #define XFS_IFORK_NEXTENTS(ip,w) XFS_CFORK_NEXTENTS(&ip->i_d, w) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_IFORK_NEXT_SET) -void xfs_ifork_next_set(xfs_inode_t *ip, int w, int n); -#define XFS_IFORK_NEXT_SET(ip,w,n) xfs_ifork_next_set(ip,w,n) -#else #define XFS_IFORK_NEXT_SET(ip,w,n) XFS_CFORK_NEXT_SET(&ip->i_d, w, n) -#endif #ifdef __KERNEL__ @@ -388,6 +343,7 @@ void xfs_ifork_next_set(xfs_inode_t *ip, int w, int n); #define XFS_ILOCK_EXCL 0x004 #define XFS_ILOCK_SHARED 0x008 #define XFS_IUNLOCK_NONOTIFY 0x010 +/* XFS_IOLOCK_NESTED 0x020 */ #define XFS_EXTENT_TOKEN_RD 0x040 #define XFS_SIZE_TOKEN_RD 0x080 #define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) @@ -395,7 +351,7 @@ void xfs_ifork_next_set(xfs_inode_t *ip, int w, int n); #define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND) #define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND) #define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND) - +/* XFS_SIZE_TOKEN_WANT 0x200 */ #define XFS_LOCK_MASK \ (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL | \ @@ -411,39 +367,17 @@ void xfs_ifork_next_set(xfs_inode_t *ip, int w, int n); #define XFS_IFLUSH_ASYNC 4 #define XFS_IFLUSH_DELWRI 5 -/* - * Flags for xfs_iflush_all. - */ -#define XFS_FLUSH_ALL 0x1 - /* * Flags for xfs_itruncate_start(). */ #define XFS_ITRUNC_DEFINITE 0x1 #define XFS_ITRUNC_MAYBE 0x2 -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ITOV) -struct vnode *xfs_itov(xfs_inode_t *ip); -#define XFS_ITOV(ip) xfs_itov(ip) -#else #define XFS_ITOV(ip) BHV_TO_VNODE(XFS_ITOBHV(ip)) -#endif #define XFS_ITOV_NULL(ip) BHV_TO_VNODE_NULL(XFS_ITOBHV(ip)) -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_ITOBHV) -struct bhv_desc *xfs_itobhv(xfs_inode_t *ip); -#define XFS_ITOBHV(ip) xfs_itobhv(ip) -#else #define XFS_ITOBHV(ip) ((struct bhv_desc *)(&((ip)->i_bhv_desc))) -#endif -#if XFS_WANT_FUNCS || (XFS_WANT_SPACE && XFSSO_XFS_BHVTOI) -xfs_inode_t *xfs_bhvtoi(struct bhv_desc *bhvp); -#define XFS_BHVTOI(bhvp) xfs_bhvtoi(bhvp) -#else -#define XFS_BHVTOI(bhvp) \ - ((xfs_inode_t *)((char *)(bhvp) - \ - (char *)&(((xfs_inode_t *)0)->i_bhv_desc))) -#endif - +#define XFS_BHVTOI(bhvp) ((xfs_inode_t *)((char *)(bhvp) - \ + (char *)&(((xfs_inode_t *)0)->i_bhv_desc))) #define BHV_IS_XFS(bdp) (BHV_OPS(bdp) == &xfs_vnodeops) /* @@ -466,7 +400,7 @@ void xfs_chash_init(struct xfs_mount *); void xfs_chash_free(struct xfs_mount *); xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, struct xfs_trans *); -void xfs_inode_lock_init(xfs_inode_t *, struct vnode *); +void xfs_inode_lock_init(xfs_inode_t *, struct bhv_vnode *); int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, uint, uint, xfs_inode_t **, xfs_daddr_t); void xfs_iput(xfs_inode_t *, uint); @@ -487,20 +421,19 @@ int xfs_finish_reclaim_all(struct xfs_mount *, int); /* * xfs_inode.c prototypes. */ -int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, - xfs_dinode_t **, struct xfs_buf **, int *); int xfs_itobp(struct xfs_mount *, struct xfs_trans *, xfs_inode_t *, xfs_dinode_t **, struct xfs_buf **, - xfs_daddr_t); + xfs_daddr_t, uint); int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, xfs_inode_t **, xfs_daddr_t); int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); -int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, nlink_t, - xfs_dev_t, struct cred *, xfs_prid_t, int, - struct xfs_buf **, boolean_t *, xfs_inode_t **); +int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, + xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, + int, struct xfs_buf **, boolean_t *, xfs_inode_t **); void xfs_xlate_dinode_core(xfs_caddr_t, struct xfs_dinode_core *, - int, xfs_arch_t); -uint xfs_dic2xflags(struct xfs_dinode_core *, xfs_arch_t); + int); +uint xfs_ip2xflags(struct xfs_inode *); +uint xfs_dic2xflags(struct xfs_dinode_core *); int xfs_ifree(struct xfs_trans *, xfs_inode_t *, struct xfs_bmap_free *); void xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); @@ -521,13 +454,43 @@ void xfs_ipin(xfs_inode_t *); void xfs_iunpin(xfs_inode_t *); int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); int xfs_iflush(xfs_inode_t *, uint); -int xfs_iflush_all(struct xfs_mount *, int); +void xfs_iflush_all(struct xfs_mount *); int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *); uint xfs_iroundup(uint); void xfs_ichgtime(xfs_inode_t *, int); xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); void xfs_lock_inodes(xfs_inode_t **, int, int, uint); +xfs_inode_t *xfs_vtoi(struct bhv_vnode *vp); + +void xfs_synchronize_atime(xfs_inode_t *); + +xfs_bmbt_rec_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); +void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, + xfs_bmbt_irec_t *); +void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); +void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); +void xfs_iext_realloc_direct(xfs_ifork_t *, int); +void xfs_iext_realloc_indirect(xfs_ifork_t *, int); +void xfs_iext_indirect_to_direct(xfs_ifork_t *); +void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); +void xfs_iext_inline_to_direct(xfs_ifork_t *, int); +void xfs_iext_destroy(xfs_ifork_t *); +xfs_bmbt_rec_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); +xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); +xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); +void xfs_iext_irec_init(xfs_ifork_t *); +xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); +void xfs_iext_irec_remove(xfs_ifork_t *, int); +void xfs_iext_irec_compact(xfs_ifork_t *); +void xfs_iext_irec_compact_pages(xfs_ifork_t *); +void xfs_iext_irec_compact_full(xfs_ifork_t *); +void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); + #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) #ifdef DEBUG @@ -546,7 +509,6 @@ extern struct kmem_zone *xfs_chashlist_zone; extern struct kmem_zone *xfs_ifork_zone; extern struct kmem_zone *xfs_inode_zone; extern struct kmem_zone *xfs_ili_zone; -extern struct vnodeops xfs_vnodeops; #endif /* __KERNEL__ */