2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18 #ifndef __XFS_INODE_H__
19 #define __XFS_INODE_H__
28 #define XFS_DATA_FORK 0
29 #define XFS_ATTR_FORK 1
32 * The following xfs_ext_irec_t struct introduces a second (top) level
33 * to the in-core extent allocation scheme. These structs are allocated
34 * in a contiguous block, creating an indirection array where each entry
35 * (irec) contains a pointer to a buffer of in-core extent records which
36 * it manages. Each extent buffer is 4k in size, since 4k is the system
37 * page size on Linux i386 and systems with larger page sizes don't seem
38 * to gain much, if anything, by using their native page size as the
39 * extent buffer size. Also, using 4k extent buffers everywhere provides
40 * a consistent interface for CXFS across different platforms.
42 * There is currently no limit on the number of irec's (extent lists)
43 * allowed, so heavily fragmented files may require an indirection array
44 * which spans multiple system pages of memory. The number of extents
45 * which would require this amount of contiguous memory is very large
46 * and should not cause problems in the foreseeable future. However,
47 * if the memory needed for the contiguous array ever becomes a problem,
48 * it is possible that a third level of indirection may be required.
50 typedef struct xfs_ext_irec {
51 xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
52 xfs_extnum_t er_extoff; /* extent offset in file */
53 xfs_extnum_t er_extcount; /* number of extents in page/block */
57 * File incore extent information, present for each of data & attr forks.
59 #define XFS_IEXT_BUFSZ 4096
60 #define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
61 #define XFS_INLINE_EXTS 2
62 #define XFS_INLINE_DATA 32
63 typedef struct xfs_ifork {
64 int if_bytes; /* bytes in if_u1 */
65 int if_real_bytes; /* bytes allocated in if_u1 */
66 struct xfs_btree_block *if_broot; /* file's incore btree root */
67 short if_broot_bytes; /* bytes allocated for root */
68 unsigned char if_flags; /* per-fork flags */
69 unsigned char if_ext_max; /* max # of extent records */
70 xfs_extnum_t if_lastex; /* last if_extents used */
72 xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
73 xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
74 char *if_data; /* inline file data */
77 xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
78 /* very small file extents */
79 char if_inline_data[XFS_INLINE_DATA];
80 /* very small file data */
81 xfs_dev_t if_rdev; /* dev number if special */
82 uuid_t if_uuid; /* mount point value */
87 * Inode location information. Stored in the inode and passed to
88 * xfs_imap_to_bp() to get a buffer and dinode for a given inode.
91 xfs_daddr_t im_blkno; /* starting BB of inode chunk */
92 ushort im_len; /* length in BBs of inode chunk */
93 ushort im_boffset; /* inode offset in block in bytes */
97 * This is the xfs in-core inode structure.
98 * Most of the on-disk inode is embedded in the i_d field.
100 * The extent pointers/inline file space, however, are managed
101 * separately. The memory for this information is pointed to by
102 * the if_u1 unions depending on the type of the data.
103 * This is used to linearize the array of extents for fast in-core
104 * access. This is used until the file's number of extents
105 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
106 * are accessed through the buffer cache.
108 * Other state kept in the in-core inode is used for identification,
109 * locking, transactional updating, etc of the inode.
111 * Generally, we do not want to hold the i_rlock while holding the
112 * i_ilock. Hierarchy is i_iolock followed by i_rlock.
114 * xfs_iptr_t contains all the inode fields upto and including the
115 * i_mnext and i_mprev fields, it is used as a marker in the inode
116 * chain off the mount structure by xfs_sync calls.
119 typedef struct xfs_ictimestamp {
120 __int32_t t_sec; /* timestamp seconds */
121 __int32_t t_nsec; /* timestamp nanoseconds */
125 * NOTE: This structure must be kept identical to struct xfs_dinode
126 * in xfs_dinode.h except for the endianness annotations.
128 typedef struct xfs_icdinode {
129 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
130 __uint16_t di_mode; /* mode and type of file */
131 __int8_t di_version; /* inode version */
132 __int8_t di_format; /* format of di_c data */
133 __uint16_t di_onlink; /* old number of links to file */
134 __uint32_t di_uid; /* owner's user id */
135 __uint32_t di_gid; /* owner's group id */
136 __uint32_t di_nlink; /* number of links to file */
137 __uint16_t di_projid; /* owner's project id */
138 __uint8_t di_pad[8]; /* unused, zeroed space */
139 __uint16_t di_flushiter; /* incremented on flush */
140 xfs_ictimestamp_t di_atime; /* time last accessed */
141 xfs_ictimestamp_t di_mtime; /* time last modified */
142 xfs_ictimestamp_t di_ctime; /* time created/inode modified */
143 xfs_fsize_t di_size; /* number of bytes in file */
144 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
145 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
146 xfs_extnum_t di_nextents; /* number of extents in data fork */
147 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
148 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
149 __int8_t di_aformat; /* format of attr fork's data */
150 __uint32_t di_dmevmask; /* DMIG event mask */
151 __uint16_t di_dmstate; /* DMIG state info */
152 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
153 __uint32_t di_gen; /* generation number */
157 * Flags for xfs_ichgtime().
159 #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
160 #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
163 * Per-fork incore inode flags.
165 #define XFS_IFINLINE 0x01 /* Inline data is read in */
166 #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
167 #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
168 #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
174 #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
175 #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
177 #define XFS_IFORK_PTR(ip,w) \
178 ((w) == XFS_DATA_FORK ? \
181 #define XFS_IFORK_DSIZE(ip) \
183 XFS_IFORK_BOFF(ip) : \
184 XFS_LITINO((ip)->i_mount))
185 #define XFS_IFORK_ASIZE(ip) \
187 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
189 #define XFS_IFORK_SIZE(ip,w) \
190 ((w) == XFS_DATA_FORK ? \
191 XFS_IFORK_DSIZE(ip) : \
193 #define XFS_IFORK_FORMAT(ip,w) \
194 ((w) == XFS_DATA_FORK ? \
195 (ip)->i_d.di_format : \
196 (ip)->i_d.di_aformat)
197 #define XFS_IFORK_FMT_SET(ip,w,n) \
198 ((w) == XFS_DATA_FORK ? \
199 ((ip)->i_d.di_format = (n)) : \
200 ((ip)->i_d.di_aformat = (n)))
201 #define XFS_IFORK_NEXTENTS(ip,w) \
202 ((w) == XFS_DATA_FORK ? \
203 (ip)->i_d.di_nextents : \
204 (ip)->i_d.di_anextents)
205 #define XFS_IFORK_NEXT_SET(ip,w,n) \
206 ((w) == XFS_DATA_FORK ? \
207 ((ip)->i_d.di_nextents = (n)) : \
208 ((ip)->i_d.di_anextents = (n)))
218 struct xfs_bmap_free;
219 struct xfs_bmbt_irec;
220 struct xfs_inode_log_item;
225 #if defined(XFS_ILOCK_TRACE)
226 #define XFS_ILOCK_KTRACE_SIZE 32
227 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
229 #define xfs_ilock_trace(i,n,f,ra)
232 typedef struct dm_attrs_s {
233 __uint32_t da_dmevmask; /* DMIG event mask */
234 __uint16_t da_dmstate; /* DMIG state info */
235 __uint16_t da_pad; /* DMIG extra padding */
238 typedef struct xfs_inode {
239 /* Inode linking and identification information. */
240 struct xfs_mount *i_mount; /* fs mount struct ptr */
241 struct xfs_dquot *i_udquot; /* user dquot */
242 struct xfs_dquot *i_gdquot; /* group dquot */
244 /* Inode location stuff */
245 xfs_ino_t i_ino; /* inode number (agno/agino)*/
246 struct xfs_imap i_imap; /* location for xfs_imap() */
248 /* Extent information. */
249 xfs_ifork_t *i_afp; /* attribute fork pointer */
250 xfs_ifork_t i_df; /* data fork */
252 /* Transaction and locking information. */
253 struct xfs_trans *i_transp; /* ptr to owning transaction*/
254 struct xfs_inode_log_item *i_itemp; /* logging information */
255 mrlock_t i_lock; /* inode lock */
256 mrlock_t i_iolock; /* inode IO lock */
257 struct completion i_flush; /* inode flush completion q */
258 atomic_t i_pincount; /* inode pin count */
259 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
260 spinlock_t i_flags_lock; /* inode i_flags lock */
261 /* Miscellaneous state. */
262 unsigned short i_flags; /* see defined flags below */
263 unsigned char i_update_core; /* timestamps/size is dirty */
264 unsigned int i_delayed_blks; /* count of delay alloc blks */
266 xfs_icdinode_t i_d; /* most of ondisk inode */
268 xfs_fsize_t i_size; /* in-memory size */
269 xfs_fsize_t i_new_size; /* size when write completes */
270 atomic_t i_iocount; /* outstanding I/O count */
273 struct inode i_vnode; /* embedded VFS inode */
275 /* Trace buffers per inode. */
276 #ifdef XFS_INODE_TRACE
277 struct ktrace *i_trace; /* general inode trace */
279 #ifdef XFS_BMAP_TRACE
280 struct ktrace *i_xtrace; /* inode extent list trace */
282 #ifdef XFS_BTREE_TRACE
283 struct ktrace *i_btrace; /* inode bmap btree trace */
286 struct ktrace *i_rwtrace; /* inode read/write trace */
288 #ifdef XFS_ILOCK_TRACE
289 struct ktrace *i_lock_trace; /* inode lock/unlock trace */
291 #ifdef XFS_DIR2_TRACE
292 struct ktrace *i_dir_trace; /* inode directory trace */
296 #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
297 (ip)->i_size : (ip)->i_d.di_size;
299 /* Convert from vfs inode to xfs inode */
300 static inline struct xfs_inode *XFS_I(struct inode *inode)
302 return container_of(inode, struct xfs_inode, i_vnode);
305 /* convert from xfs inode to vfs inode */
306 static inline struct inode *VFS_I(struct xfs_inode *ip)
312 * i_flags helper functions
315 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
317 ip->i_flags |= flags;
321 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
323 spin_lock(&ip->i_flags_lock);
324 __xfs_iflags_set(ip, flags);
325 spin_unlock(&ip->i_flags_lock);
329 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
331 spin_lock(&ip->i_flags_lock);
332 ip->i_flags &= ~flags;
333 spin_unlock(&ip->i_flags_lock);
337 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
339 return (ip->i_flags & flags);
343 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
346 spin_lock(&ip->i_flags_lock);
347 ret = __xfs_iflags_test(ip, flags);
348 spin_unlock(&ip->i_flags_lock);
353 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
357 spin_lock(&ip->i_flags_lock);
358 ret = ip->i_flags & flags;
360 ip->i_flags &= ~flags;
361 spin_unlock(&ip->i_flags_lock);
366 * Manage the i_flush queue embedded in the inode. This completion
367 * queue synchronizes processes attempting to flush the in-core
368 * inode back to disk.
370 static inline void xfs_iflock(xfs_inode_t *ip)
372 wait_for_completion(&ip->i_flush);
375 static inline int xfs_iflock_nowait(xfs_inode_t *ip)
377 return try_wait_for_completion(&ip->i_flush);
380 static inline void xfs_ifunlock(xfs_inode_t *ip)
382 complete(&ip->i_flush);
386 * In-core inode flags.
388 #define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */
389 #define XFS_ISTALE 0x0002 /* inode has been staled */
390 #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */
391 #define XFS_INEW 0x0008 /* inode has just been allocated */
392 #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */
393 #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */
396 * Flags for inode locking.
397 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
398 * 1<<16 - 1<<32-1 -- lockdep annotation (integers)
400 #define XFS_IOLOCK_EXCL (1<<0)
401 #define XFS_IOLOCK_SHARED (1<<1)
402 #define XFS_ILOCK_EXCL (1<<2)
403 #define XFS_ILOCK_SHARED (1<<3)
404 #define XFS_IUNLOCK_NONOTIFY (1<<4)
406 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
407 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
410 * Flags for lockdep annotations.
412 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
413 * (ie directory operations that require locking a directory inode and
414 * an entry inode). The first inode gets locked with this flag so it
415 * gets a lockdep subclass of 1 and the second lock will have a lockdep
418 * XFS_LOCK_INUMORDER - for locking several inodes at the some time
419 * with xfs_lock_inodes(). This flag is used as the starting subclass
420 * and each subsequent lock acquired will increment the subclass by one.
421 * So the first lock acquired will have a lockdep subclass of 2, the
422 * second lock will have a lockdep subclass of 3, and so on. It is
423 * the responsibility of the class builder to shift this to the correct
424 * portion of the lock_mode lockdep mask.
426 #define XFS_LOCK_PARENT 1
427 #define XFS_LOCK_INUMORDER 2
429 #define XFS_IOLOCK_SHIFT 16
430 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
432 #define XFS_ILOCK_SHIFT 24
433 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
435 #define XFS_IOLOCK_DEP_MASK 0x00ff0000
436 #define XFS_ILOCK_DEP_MASK 0xff000000
437 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
439 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
440 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
443 * Flags for xfs_iflush()
445 #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1
446 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2
447 #define XFS_IFLUSH_SYNC 3
448 #define XFS_IFLUSH_ASYNC 4
449 #define XFS_IFLUSH_DELWRI 5
450 #define XFS_IFLUSH_ASYNC_NOBLOCK 6
453 * Flags for xfs_itruncate_start().
455 #define XFS_ITRUNC_DEFINITE 0x1
456 #define XFS_ITRUNC_MAYBE 0x2
459 * For multiple groups support: if S_ISGID bit is set in the parent
460 * directory, group of new file is set to that of the parent, and
461 * new subdirectory gets S_ISGID bit from parent.
463 #define XFS_INHERIT_GID(pip) \
464 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
465 ((pip)->i_d.di_mode & S_ISGID))
468 * xfs_iget.c prototypes.
470 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
471 uint, uint, xfs_inode_t **);
472 void xfs_iput(xfs_inode_t *, uint);
473 void xfs_iput_new(xfs_inode_t *, uint);
474 void xfs_ilock(xfs_inode_t *, uint);
475 int xfs_ilock_nowait(xfs_inode_t *, uint);
476 void xfs_iunlock(xfs_inode_t *, uint);
477 void xfs_ilock_demote(xfs_inode_t *, uint);
478 int xfs_isilocked(xfs_inode_t *, uint);
479 uint xfs_ilock_map_shared(xfs_inode_t *);
480 void xfs_iunlock_map_shared(xfs_inode_t *, uint);
481 void xfs_ireclaim(xfs_inode_t *);
484 * xfs_inode.c prototypes.
486 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
487 xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t,
488 int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
490 uint xfs_ip2xflags(struct xfs_inode *);
491 uint xfs_dic2xflags(struct xfs_dinode *);
492 int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
493 struct xfs_bmap_free *);
494 int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
495 int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
496 xfs_fsize_t, int, int);
497 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
499 void xfs_iext_realloc(xfs_inode_t *, int, int);
500 void xfs_ipin(xfs_inode_t *);
501 void xfs_iunpin(xfs_inode_t *);
502 int xfs_iflush(xfs_inode_t *, uint);
503 void xfs_ichgtime(xfs_inode_t *, int);
504 void xfs_lock_inodes(xfs_inode_t **, int, uint);
505 void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
507 void xfs_synchronize_times(xfs_inode_t *);
508 void xfs_mark_inode_dirty_sync(xfs_inode_t *);
510 #if defined(XFS_INODE_TRACE)
512 #define INODE_TRACE_SIZE 16 /* number of trace entries */
513 #define INODE_KTRACE_ENTRY 1
514 #define INODE_KTRACE_EXIT 2
515 #define INODE_KTRACE_HOLD 3
516 #define INODE_KTRACE_REF 4
517 #define INODE_KTRACE_RELE 5
519 extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *);
520 extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *);
521 extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *);
522 extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *);
523 extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *);
524 #define xfs_itrace_entry(ip) \
525 _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address)
526 #define xfs_itrace_exit(ip) \
527 _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address)
528 #define xfs_itrace_exit_tag(ip, tag) \
529 _xfs_itrace_exit(ip, tag, (inst_t *)__return_address)
530 #define xfs_itrace_ref(ip) \
531 _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address)
534 #define xfs_itrace_entry(a)
535 #define xfs_itrace_exit(a)
536 #define xfs_itrace_exit_tag(a, b)
537 #define xfs_itrace_hold(a, b, c, d)
538 #define xfs_itrace_ref(a)
539 #define xfs_itrace_rele(a, b, c, d)
544 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
545 atomic_inc(&(VFS_I(ip)->i_count)); \
546 xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \
551 xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \
555 #endif /* __KERNEL__ */
558 * Flags for xfs_iget()
560 #define XFS_IGET_CREATE 0x1
561 #define XFS_IGET_UNTRUSTED 0x2
563 int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
564 xfs_ino_t, struct xfs_dinode **,
565 struct xfs_buf **, int *, uint);
566 int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
567 struct xfs_inode *, struct xfs_dinode **,
568 struct xfs_buf **, uint);
569 int xfs_iread(struct xfs_mount *, struct xfs_trans *,
570 struct xfs_inode *, uint);
571 void xfs_dinode_to_disk(struct xfs_dinode *,
572 struct xfs_icdinode *);
573 void xfs_idestroy_fork(struct xfs_inode *, int);
574 void xfs_idata_realloc(struct xfs_inode *, int, int);
575 void xfs_iroot_realloc(struct xfs_inode *, int, int);
576 int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
577 int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
579 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
580 void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
582 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
583 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
584 void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
585 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
586 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
587 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
588 void xfs_iext_realloc_direct(xfs_ifork_t *, int);
589 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
590 void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
591 void xfs_iext_destroy(xfs_ifork_t *);
592 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
593 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
594 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
595 void xfs_iext_irec_init(xfs_ifork_t *);
596 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
597 void xfs_iext_irec_remove(xfs_ifork_t *, int);
598 void xfs_iext_irec_compact(xfs_ifork_t *);
599 void xfs_iext_irec_compact_pages(xfs_ifork_t *);
600 void xfs_iext_irec_compact_full(xfs_ifork_t *);
601 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
603 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
606 void xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
609 #define xfs_isize_check(mp, ip, isize)
613 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
615 #define xfs_inobp_check(mp, bp)
618 extern struct kmem_zone *xfs_ifork_zone;
619 extern struct kmem_zone *xfs_inode_zone;
620 extern struct kmem_zone *xfs_ili_zone;
622 #endif /* __XFS_INODE_H__ */