1 /*
2 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc.
3 * All Rights Reserved.
4 *
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.
8 *
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.
13 *
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
17 */
18 #ifndef __XFS_INODE_H__
19 #define __XFS_INODE_H__
20
21 struct posix_acl;
22 struct xfs_dinode;
23 struct xfs_inode;
24
25 /*
26 * Fork identifiers.
27 */
28 #define XFS_DATA_FORK 0
29 #define XFS_ATTR_FORK 1
30
31 /*
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.
41 *
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.
49 */
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 */
54 } xfs_ext_irec_t;
55
56 /*
57 * File incore extent information, present for each of data & attr forks.
58 */
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 */
71 union {
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 */
75 } if_u1;
76 union {
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 */
83 } if_u2;
84 } xfs_ifork_t;
85
86 /*
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.
89 */
90 struct xfs_imap {
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 */
94 };
95
96 /*
97 * This is the xfs in-core inode structure.
98 * Most of the on-disk inode is embedded in the i_d field.
99 *
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.
107 *
108 * Other state kept in the in-core inode is used for identification,
109 * locking, transactional updating, etc of the inode.
110 *
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.
113 *
114 * xfs_iptr_t contains all the inode fields up to 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.
117 */
118
119 typedef struct xfs_ictimestamp {
120 __int32_t t_sec; /* timestamp seconds */
121 __int32_t t_nsec; /* timestamp nanoseconds */
122 } xfs_ictimestamp_t;
123
124 /*
125 * NOTE: This structure must be kept identical to struct xfs_dinode
126 * in xfs_dinode.h except for the endianness annotations.
127 */
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_lo; /* lower part of owner's project id */
138 __uint16_t di_projid_hi; /* higher part of owner's project id */
139 __uint8_t di_pad[6]; /* unused, zeroed space */
140 __uint16_t di_flushiter; /* incremented on flush */
141 xfs_ictimestamp_t di_atime; /* time last accessed */
142 xfs_ictimestamp_t di_mtime; /* time last modified */
143 xfs_ictimestamp_t di_ctime; /* time created/inode modified */
144 xfs_fsize_t di_size; /* number of bytes in file */
145 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
146 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
147 xfs_extnum_t di_nextents; /* number of extents in data fork */
148 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
149 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
150 __int8_t di_aformat; /* format of attr fork's data */
151 __uint32_t di_dmevmask; /* DMIG event mask */
152 __uint16_t di_dmstate; /* DMIG state info */
153 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
154 __uint32_t di_gen; /* generation number */
155 } xfs_icdinode_t;
156
157 /*
158 * Flags for xfs_ichgtime().
159 */
160 #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
161 #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
162
163 /*
164 * Per-fork incore inode flags.
165 */
166 #define XFS_IFINLINE 0x01 /* Inline data is read in */
167 #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
168 #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
169 #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
170
171 /*
172 * Fork handling.
173 */
174
175 #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
176 #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
177
178 #define XFS_IFORK_PTR(ip,w) \
179 ((w) == XFS_DATA_FORK ? \
180 &(ip)->i_df : \
181 (ip)->i_afp)
182 #define XFS_IFORK_DSIZE(ip) \
183 (XFS_IFORK_Q(ip) ? \
184 XFS_IFORK_BOFF(ip) : \
185 XFS_LITINO((ip)->i_mount))
186 #define XFS_IFORK_ASIZE(ip) \
187 (XFS_IFORK_Q(ip) ? \
188 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
189 0)
190 #define XFS_IFORK_SIZE(ip,w) \
191 ((w) == XFS_DATA_FORK ? \
192 XFS_IFORK_DSIZE(ip) : \
193 XFS_IFORK_ASIZE(ip))
194 #define XFS_IFORK_FORMAT(ip,w) \
195 ((w) == XFS_DATA_FORK ? \
196 (ip)->i_d.di_format : \
197 (ip)->i_d.di_aformat)
198 #define XFS_IFORK_FMT_SET(ip,w,n) \
199 ((w) == XFS_DATA_FORK ? \
200 ((ip)->i_d.di_format = (n)) : \
201 ((ip)->i_d.di_aformat = (n)))
202 #define XFS_IFORK_NEXTENTS(ip,w) \
203 ((w) == XFS_DATA_FORK ? \
204 (ip)->i_d.di_nextents : \
205 (ip)->i_d.di_anextents)
206 #define XFS_IFORK_NEXT_SET(ip,w,n) \
207 ((w) == XFS_DATA_FORK ? \
208 ((ip)->i_d.di_nextents = (n)) : \
209 ((ip)->i_d.di_anextents = (n)))
210
211
212
213 #ifdef __KERNEL__
214
215 struct bhv_desc;
216 struct xfs_buf;
217 struct xfs_bmap_free;
218 struct xfs_bmbt_irec;
219 struct xfs_inode_log_item;
220 struct xfs_mount;
221 struct xfs_trans;
222 struct xfs_dquot;
223
224 typedef struct dm_attrs_s {
225 __uint32_t da_dmevmask; /* DMIG event mask */
226 __uint16_t da_dmstate; /* DMIG state info */
227 __uint16_t da_pad; /* DMIG extra padding */
228 } dm_attrs_t;
229
230 typedef struct xfs_inode {
231 /* Inode linking and identification information. */
232 struct xfs_mount *i_mount; /* fs mount struct ptr */
233 struct xfs_dquot *i_udquot; /* user dquot */
234 struct xfs_dquot *i_gdquot; /* group dquot */
235
236 /* Inode location stuff */
237 xfs_ino_t i_ino; /* inode number (agno/agino)*/
238 struct xfs_imap i_imap; /* location for xfs_imap() */
239
240 /* Extent information. */
241 xfs_ifork_t *i_afp; /* attribute fork pointer */
242 xfs_ifork_t i_df; /* data fork */
243
244 /* Transaction and locking information. */
245 struct xfs_trans *i_transp; /* ptr to owning transaction*/
246 struct xfs_inode_log_item *i_itemp; /* logging information */
247 mrlock_t i_lock; /* inode lock */
248 mrlock_t i_iolock; /* inode IO lock */
249 struct completion i_flush; /* inode flush completion q */
250 atomic_t i_pincount; /* inode pin count */
251 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
252 spinlock_t i_flags_lock; /* inode i_flags lock */
253 /* Miscellaneous state. */
254 unsigned short i_flags; /* see defined flags below */
255 unsigned char i_update_core; /* timestamps/size is dirty */
256 unsigned int i_delayed_blks; /* count of delay alloc blks */
257
258 xfs_icdinode_t i_d; /* most of ondisk inode */
259
260 xfs_fsize_t i_size; /* in-memory size */
261 xfs_fsize_t i_new_size; /* size when write completes */
262 atomic_t i_iocount; /* outstanding I/O count */
263
264 /* VFS inode */
265 struct inode i_vnode; /* embedded VFS inode */
266 } xfs_inode_t;
267
268 #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
269 (ip)->i_size : (ip)->i_d.di_size;
270
271 /* Convert from vfs inode to xfs inode */
XFS_I(struct inode * inode)272 static inline struct xfs_inode *XFS_I(struct inode *inode)
273 {
274 return container_of(inode, struct xfs_inode, i_vnode);
275 }
276
277 /* convert from xfs inode to vfs inode */
VFS_I(struct xfs_inode * ip)278 static inline struct inode *VFS_I(struct xfs_inode *ip)
279 {
280 return &ip->i_vnode;
281 }
282
283 /*
284 * i_flags helper functions
285 */
286 static inline void
__xfs_iflags_set(xfs_inode_t * ip,unsigned short flags)287 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
288 {
289 ip->i_flags |= flags;
290 }
291
292 static inline void
xfs_iflags_set(xfs_inode_t * ip,unsigned short flags)293 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
294 {
295 spin_lock(&ip->i_flags_lock);
296 __xfs_iflags_set(ip, flags);
297 spin_unlock(&ip->i_flags_lock);
298 }
299
300 static inline void
xfs_iflags_clear(xfs_inode_t * ip,unsigned short flags)301 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
302 {
303 spin_lock(&ip->i_flags_lock);
304 ip->i_flags &= ~flags;
305 spin_unlock(&ip->i_flags_lock);
306 }
307
308 static inline int
__xfs_iflags_test(xfs_inode_t * ip,unsigned short flags)309 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
310 {
311 return (ip->i_flags & flags);
312 }
313
314 static inline int
xfs_iflags_test(xfs_inode_t * ip,unsigned short flags)315 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
316 {
317 int ret;
318 spin_lock(&ip->i_flags_lock);
319 ret = __xfs_iflags_test(ip, flags);
320 spin_unlock(&ip->i_flags_lock);
321 return ret;
322 }
323
324 static inline int
xfs_iflags_test_and_clear(xfs_inode_t * ip,unsigned short flags)325 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
326 {
327 int ret;
328
329 spin_lock(&ip->i_flags_lock);
330 ret = ip->i_flags & flags;
331 if (ret)
332 ip->i_flags &= ~flags;
333 spin_unlock(&ip->i_flags_lock);
334 return ret;
335 }
336
337 /*
338 * Project quota id helpers (previously projid was 16bit only
339 * and using two 16bit values to hold new 32bit projid was chosen
340 * to retain compatibility with "old" filesystems).
341 */
342 static inline prid_t
xfs_get_projid(struct xfs_inode * ip)343 xfs_get_projid(struct xfs_inode *ip)
344 {
345 return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo;
346 }
347
348 static inline void
xfs_set_projid(struct xfs_inode * ip,prid_t projid)349 xfs_set_projid(struct xfs_inode *ip,
350 prid_t projid)
351 {
352 ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16);
353 ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff);
354 }
355
356 /*
357 * Manage the i_flush queue embedded in the inode. This completion
358 * queue synchronizes processes attempting to flush the in-core
359 * inode back to disk.
360 */
xfs_iflock(xfs_inode_t * ip)361 static inline void xfs_iflock(xfs_inode_t *ip)
362 {
363 wait_for_completion(&ip->i_flush);
364 }
365
xfs_iflock_nowait(xfs_inode_t * ip)366 static inline int xfs_iflock_nowait(xfs_inode_t *ip)
367 {
368 return try_wait_for_completion(&ip->i_flush);
369 }
370
xfs_ifunlock(xfs_inode_t * ip)371 static inline void xfs_ifunlock(xfs_inode_t *ip)
372 {
373 complete(&ip->i_flush);
374 }
375
376 /*
377 * In-core inode flags.
378 */
379 #define XFS_IRECLAIM 0x0001 /* started reclaiming this inode */
380 #define XFS_ISTALE 0x0002 /* inode has been staled */
381 #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */
382 #define XFS_INEW 0x0008 /* inode has just been allocated */
383 #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */
384 #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */
385 #define XFS_IDIRTY_RELEASE 0x0040 /* dirty release already seen */
386
387 /*
388 * Flags for inode locking.
389 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
390 * 1<<16 - 1<<32-1 -- lockdep annotation (integers)
391 */
392 #define XFS_IOLOCK_EXCL (1<<0)
393 #define XFS_IOLOCK_SHARED (1<<1)
394 #define XFS_ILOCK_EXCL (1<<2)
395 #define XFS_ILOCK_SHARED (1<<3)
396 #define XFS_IUNLOCK_NONOTIFY (1<<4)
397
398 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
399 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
400
401 #define XFS_LOCK_FLAGS \
402 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \
403 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \
404 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \
405 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \
406 { XFS_IUNLOCK_NONOTIFY, "IUNLOCK_NONOTIFY" }
407
408
409 /*
410 * Flags for lockdep annotations.
411 *
412 * XFS_LOCK_PARENT - for directory operations that require locking a
413 * parent directory inode and a child entry inode. The parent gets locked
414 * with this flag so it gets a lockdep subclass of 1 and the child entry
415 * lock will have a lockdep subclass of 0.
416 *
417 * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary
418 * inodes do not participate in the normal lock order, and thus have their
419 * own subclasses.
420 *
421 * XFS_LOCK_INUMORDER - for locking several inodes at the some time
422 * with xfs_lock_inodes(). This flag is used as the starting subclass
423 * and each subsequent lock acquired will increment the subclass by one.
424 * So the first lock acquired will have a lockdep subclass of 4, the
425 * second lock will have a lockdep subclass of 5, and so on. It is
426 * the responsibility of the class builder to shift this to the correct
427 * portion of the lock_mode lockdep mask.
428 */
429 #define XFS_LOCK_PARENT 1
430 #define XFS_LOCK_RTBITMAP 2
431 #define XFS_LOCK_RTSUM 3
432 #define XFS_LOCK_INUMORDER 4
433
434 #define XFS_IOLOCK_SHIFT 16
435 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
436
437 #define XFS_ILOCK_SHIFT 24
438 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
439 #define XFS_ILOCK_RTBITMAP (XFS_LOCK_RTBITMAP << XFS_ILOCK_SHIFT)
440 #define XFS_ILOCK_RTSUM (XFS_LOCK_RTSUM << XFS_ILOCK_SHIFT)
441
442 #define XFS_IOLOCK_DEP_MASK 0x00ff0000
443 #define XFS_ILOCK_DEP_MASK 0xff000000
444 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
445
446 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
447 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
448
449 extern struct lock_class_key xfs_iolock_reclaimable;
450
451 /*
452 * Flags for xfs_itruncate_start().
453 */
454 #define XFS_ITRUNC_DEFINITE 0x1
455 #define XFS_ITRUNC_MAYBE 0x2
456
457 #define XFS_ITRUNC_FLAGS \
458 { XFS_ITRUNC_DEFINITE, "DEFINITE" }, \
459 { XFS_ITRUNC_MAYBE, "MAYBE" }
460
461 /*
462 * For multiple groups support: if S_ISGID bit is set in the parent
463 * directory, group of new file is set to that of the parent, and
464 * new subdirectory gets S_ISGID bit from parent.
465 */
466 #define XFS_INHERIT_GID(pip) \
467 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
468 ((pip)->i_d.di_mode & S_ISGID))
469
470 /*
471 * xfs_iget.c prototypes.
472 */
473 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
474 uint, uint, xfs_inode_t **);
475 void xfs_ilock(xfs_inode_t *, uint);
476 int xfs_ilock_nowait(xfs_inode_t *, uint);
477 void xfs_iunlock(xfs_inode_t *, uint);
478 void xfs_ilock_demote(xfs_inode_t *, uint);
479 int xfs_isilocked(xfs_inode_t *, uint);
480 uint xfs_ilock_map_shared(xfs_inode_t *);
481 void xfs_iunlock_map_shared(xfs_inode_t *, uint);
482 void xfs_inode_free(struct xfs_inode *ip);
483
484 /*
485 * xfs_inode.c prototypes.
486 */
487 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
488 xfs_nlink_t, xfs_dev_t, prid_t, int,
489 struct xfs_buf **, boolean_t *, xfs_inode_t **);
490
491 uint xfs_ip2xflags(struct xfs_inode *);
492 uint xfs_dic2xflags(struct xfs_dinode *);
493 int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
494 struct xfs_bmap_free *);
495 int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
496 int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
497 xfs_fsize_t, int, int);
498 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
499
500 void xfs_iext_realloc(xfs_inode_t *, int, int);
501 void xfs_iunpin_wait(xfs_inode_t *);
502 int xfs_iflush(xfs_inode_t *, uint);
503 void xfs_lock_inodes(xfs_inode_t **, int, uint);
504 void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
505
506 void xfs_synchronize_times(xfs_inode_t *);
507 void xfs_mark_inode_dirty(xfs_inode_t *);
508 void xfs_mark_inode_dirty_sync(xfs_inode_t *);
509
510 #define IHOLD(ip) \
511 do { \
512 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
513 ihold(VFS_I(ip)); \
514 trace_xfs_ihold(ip, _THIS_IP_); \
515 } while (0)
516
517 #define IRELE(ip) \
518 do { \
519 trace_xfs_irele(ip, _THIS_IP_); \
520 iput(VFS_I(ip)); \
521 } while (0)
522
523 #endif /* __KERNEL__ */
524
525 /*
526 * Flags for xfs_iget()
527 */
528 #define XFS_IGET_CREATE 0x1
529 #define XFS_IGET_UNTRUSTED 0x2
530
531 int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
532 xfs_ino_t, struct xfs_dinode **,
533 struct xfs_buf **, int *, uint);
534 int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
535 struct xfs_inode *, struct xfs_dinode **,
536 struct xfs_buf **, uint);
537 int xfs_iread(struct xfs_mount *, struct xfs_trans *,
538 struct xfs_inode *, uint);
539 void xfs_dinode_to_disk(struct xfs_dinode *,
540 struct xfs_icdinode *);
541 void xfs_idestroy_fork(struct xfs_inode *, int);
542 void xfs_idata_realloc(struct xfs_inode *, int, int);
543 void xfs_iroot_realloc(struct xfs_inode *, int, int);
544 int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
545 int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
546
547 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
548 void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t,
549 xfs_bmbt_irec_t *, int);
550 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
551 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
552 void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int);
553 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
554 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
555 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
556 void xfs_iext_realloc_direct(xfs_ifork_t *, int);
557 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
558 void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
559 void xfs_iext_destroy(xfs_ifork_t *);
560 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
561 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
562 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
563 void xfs_iext_irec_init(xfs_ifork_t *);
564 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
565 void xfs_iext_irec_remove(xfs_ifork_t *, int);
566 void xfs_iext_irec_compact(xfs_ifork_t *);
567 void xfs_iext_irec_compact_pages(xfs_ifork_t *);
568 void xfs_iext_irec_compact_full(xfs_ifork_t *);
569 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
570
571 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
572
573 #ifdef DEBUG
574 void xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
575 xfs_fsize_t);
576 #else /* DEBUG */
577 #define xfs_isize_check(mp, ip, isize)
578 #endif /* DEBUG */
579
580 #if defined(DEBUG)
581 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
582 #else
583 #define xfs_inobp_check(mp, bp)
584 #endif /* DEBUG */
585
586 extern struct kmem_zone *xfs_ifork_zone;
587 extern struct kmem_zone *xfs_inode_zone;
588 extern struct kmem_zone *xfs_ili_zone;
589
590 #endif /* __XFS_INODE_H__ */
591