xfs_inode.h 19 KB

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  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. struct posix_acl;
  21. struct xfs_dinode;
  22. struct xfs_inode;
  23. /*
  24. * Fork identifiers.
  25. */
  26. #define XFS_DATA_FORK 0
  27. #define XFS_ATTR_FORK 1
  28. /*
  29. * The following xfs_ext_irec_t struct introduces a second (top) level
  30. * to the in-core extent allocation scheme. These structs are allocated
  31. * in a contiguous block, creating an indirection array where each entry
  32. * (irec) contains a pointer to a buffer of in-core extent records which
  33. * it manages. Each extent buffer is 4k in size, since 4k is the system
  34. * page size on Linux i386 and systems with larger page sizes don't seem
  35. * to gain much, if anything, by using their native page size as the
  36. * extent buffer size. Also, using 4k extent buffers everywhere provides
  37. * a consistent interface for CXFS across different platforms.
  38. *
  39. * There is currently no limit on the number of irec's (extent lists)
  40. * allowed, so heavily fragmented files may require an indirection array
  41. * which spans multiple system pages of memory. The number of extents
  42. * which would require this amount of contiguous memory is very large
  43. * and should not cause problems in the foreseeable future. However,
  44. * if the memory needed for the contiguous array ever becomes a problem,
  45. * it is possible that a third level of indirection may be required.
  46. */
  47. typedef struct xfs_ext_irec {
  48. xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */
  49. xfs_extnum_t er_extoff; /* extent offset in file */
  50. xfs_extnum_t er_extcount; /* number of extents in page/block */
  51. } xfs_ext_irec_t;
  52. /*
  53. * File incore extent information, present for each of data & attr forks.
  54. */
  55. #define XFS_IEXT_BUFSZ 4096
  56. #define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
  57. #define XFS_INLINE_EXTS 2
  58. #define XFS_INLINE_DATA 32
  59. typedef struct xfs_ifork {
  60. int if_bytes; /* bytes in if_u1 */
  61. int if_real_bytes; /* bytes allocated in if_u1 */
  62. struct xfs_btree_block *if_broot; /* file's incore btree root */
  63. short if_broot_bytes; /* bytes allocated for root */
  64. unsigned char if_flags; /* per-fork flags */
  65. unsigned char if_ext_max; /* max # of extent records */
  66. xfs_extnum_t if_lastex; /* last if_extents used */
  67. union {
  68. xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */
  69. xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
  70. char *if_data; /* inline file data */
  71. } if_u1;
  72. union {
  73. xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS];
  74. /* very small file extents */
  75. char if_inline_data[XFS_INLINE_DATA];
  76. /* very small file data */
  77. xfs_dev_t if_rdev; /* dev number if special */
  78. uuid_t if_uuid; /* mount point value */
  79. } if_u2;
  80. } xfs_ifork_t;
  81. /*
  82. * Inode location information. Stored in the inode and passed to
  83. * xfs_imap_to_bp() to get a buffer and dinode for a given inode.
  84. */
  85. struct xfs_imap {
  86. xfs_daddr_t im_blkno; /* starting BB of inode chunk */
  87. ushort im_len; /* length in BBs of inode chunk */
  88. ushort im_boffset; /* inode offset in block in bytes */
  89. };
  90. /*
  91. * This is the xfs in-core inode structure.
  92. * Most of the on-disk inode is embedded in the i_d field.
  93. *
  94. * The extent pointers/inline file space, however, are managed
  95. * separately. The memory for this information is pointed to by
  96. * the if_u1 unions depending on the type of the data.
  97. * This is used to linearize the array of extents for fast in-core
  98. * access. This is used until the file's number of extents
  99. * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
  100. * are accessed through the buffer cache.
  101. *
  102. * Other state kept in the in-core inode is used for identification,
  103. * locking, transactional updating, etc of the inode.
  104. *
  105. * Generally, we do not want to hold the i_rlock while holding the
  106. * i_ilock. Hierarchy is i_iolock followed by i_rlock.
  107. *
  108. * xfs_iptr_t contains all the inode fields upto and including the
  109. * i_mnext and i_mprev fields, it is used as a marker in the inode
  110. * chain off the mount structure by xfs_sync calls.
  111. */
  112. typedef struct xfs_ictimestamp {
  113. __int32_t t_sec; /* timestamp seconds */
  114. __int32_t t_nsec; /* timestamp nanoseconds */
  115. } xfs_ictimestamp_t;
  116. /*
  117. * NOTE: This structure must be kept identical to struct xfs_dinode
  118. * in xfs_dinode.h except for the endianness annotations.
  119. */
  120. typedef struct xfs_icdinode {
  121. __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */
  122. __uint16_t di_mode; /* mode and type of file */
  123. __int8_t di_version; /* inode version */
  124. __int8_t di_format; /* format of di_c data */
  125. __uint16_t di_onlink; /* old number of links to file */
  126. __uint32_t di_uid; /* owner's user id */
  127. __uint32_t di_gid; /* owner's group id */
  128. __uint32_t di_nlink; /* number of links to file */
  129. __uint16_t di_projid; /* owner's project id */
  130. __uint8_t di_pad[8]; /* unused, zeroed space */
  131. __uint16_t di_flushiter; /* incremented on flush */
  132. xfs_ictimestamp_t di_atime; /* time last accessed */
  133. xfs_ictimestamp_t di_mtime; /* time last modified */
  134. xfs_ictimestamp_t di_ctime; /* time created/inode modified */
  135. xfs_fsize_t di_size; /* number of bytes in file */
  136. xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */
  137. xfs_extlen_t di_extsize; /* basic/minimum extent size for file */
  138. xfs_extnum_t di_nextents; /* number of extents in data fork */
  139. xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/
  140. __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */
  141. __int8_t di_aformat; /* format of attr fork's data */
  142. __uint32_t di_dmevmask; /* DMIG event mask */
  143. __uint16_t di_dmstate; /* DMIG state info */
  144. __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */
  145. __uint32_t di_gen; /* generation number */
  146. } xfs_icdinode_t;
  147. /*
  148. * Flags for xfs_ichgtime().
  149. */
  150. #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
  151. #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */
  152. /*
  153. * Per-fork incore inode flags.
  154. */
  155. #define XFS_IFINLINE 0x01 /* Inline data is read in */
  156. #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
  157. #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
  158. #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
  159. /*
  160. * Fork handling.
  161. */
  162. #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0)
  163. #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3))
  164. #define XFS_IFORK_PTR(ip,w) \
  165. ((w) == XFS_DATA_FORK ? \
  166. &(ip)->i_df : \
  167. (ip)->i_afp)
  168. #define XFS_IFORK_DSIZE(ip) \
  169. (XFS_IFORK_Q(ip) ? \
  170. XFS_IFORK_BOFF(ip) : \
  171. XFS_LITINO((ip)->i_mount))
  172. #define XFS_IFORK_ASIZE(ip) \
  173. (XFS_IFORK_Q(ip) ? \
  174. XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \
  175. 0)
  176. #define XFS_IFORK_SIZE(ip,w) \
  177. ((w) == XFS_DATA_FORK ? \
  178. XFS_IFORK_DSIZE(ip) : \
  179. XFS_IFORK_ASIZE(ip))
  180. #define XFS_IFORK_FORMAT(ip,w) \
  181. ((w) == XFS_DATA_FORK ? \
  182. (ip)->i_d.di_format : \
  183. (ip)->i_d.di_aformat)
  184. #define XFS_IFORK_FMT_SET(ip,w,n) \
  185. ((w) == XFS_DATA_FORK ? \
  186. ((ip)->i_d.di_format = (n)) : \
  187. ((ip)->i_d.di_aformat = (n)))
  188. #define XFS_IFORK_NEXTENTS(ip,w) \
  189. ((w) == XFS_DATA_FORK ? \
  190. (ip)->i_d.di_nextents : \
  191. (ip)->i_d.di_anextents)
  192. #define XFS_IFORK_NEXT_SET(ip,w,n) \
  193. ((w) == XFS_DATA_FORK ? \
  194. ((ip)->i_d.di_nextents = (n)) : \
  195. ((ip)->i_d.di_anextents = (n)))
  196. #ifdef __KERNEL__
  197. struct bhv_desc;
  198. struct cred;
  199. struct xfs_buf;
  200. struct xfs_bmap_free;
  201. struct xfs_bmbt_irec;
  202. struct xfs_inode_log_item;
  203. struct xfs_mount;
  204. struct xfs_trans;
  205. struct xfs_dquot;
  206. typedef struct dm_attrs_s {
  207. __uint32_t da_dmevmask; /* DMIG event mask */
  208. __uint16_t da_dmstate; /* DMIG state info */
  209. __uint16_t da_pad; /* DMIG extra padding */
  210. } dm_attrs_t;
  211. typedef struct xfs_inode {
  212. /* Inode linking and identification information. */
  213. struct xfs_mount *i_mount; /* fs mount struct ptr */
  214. struct xfs_dquot *i_udquot; /* user dquot */
  215. struct xfs_dquot *i_gdquot; /* group dquot */
  216. /* Inode location stuff */
  217. xfs_ino_t i_ino; /* inode number (agno/agino)*/
  218. struct xfs_imap i_imap; /* location for xfs_imap() */
  219. /* Extent information. */
  220. xfs_ifork_t *i_afp; /* attribute fork pointer */
  221. xfs_ifork_t i_df; /* data fork */
  222. /* Transaction and locking information. */
  223. struct xfs_trans *i_transp; /* ptr to owning transaction*/
  224. struct xfs_inode_log_item *i_itemp; /* logging information */
  225. mrlock_t i_lock; /* inode lock */
  226. mrlock_t i_iolock; /* inode IO lock */
  227. struct completion i_flush; /* inode flush completion q */
  228. atomic_t i_pincount; /* inode pin count */
  229. wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
  230. spinlock_t i_flags_lock; /* inode i_flags lock */
  231. /* Miscellaneous state. */
  232. unsigned short i_flags; /* see defined flags below */
  233. unsigned char i_update_core; /* timestamps/size is dirty */
  234. unsigned int i_delayed_blks; /* count of delay alloc blks */
  235. xfs_icdinode_t i_d; /* most of ondisk inode */
  236. xfs_fsize_t i_size; /* in-memory size */
  237. xfs_fsize_t i_new_size; /* size when write completes */
  238. atomic_t i_iocount; /* outstanding I/O count */
  239. /* VFS inode */
  240. struct inode i_vnode; /* embedded VFS inode */
  241. } xfs_inode_t;
  242. #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \
  243. (ip)->i_size : (ip)->i_d.di_size;
  244. /* Convert from vfs inode to xfs inode */
  245. static inline struct xfs_inode *XFS_I(struct inode *inode)
  246. {
  247. return container_of(inode, struct xfs_inode, i_vnode);
  248. }
  249. /* convert from xfs inode to vfs inode */
  250. static inline struct inode *VFS_I(struct xfs_inode *ip)
  251. {
  252. return &ip->i_vnode;
  253. }
  254. /*
  255. * i_flags helper functions
  256. */
  257. static inline void
  258. __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
  259. {
  260. ip->i_flags |= flags;
  261. }
  262. static inline void
  263. xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
  264. {
  265. spin_lock(&ip->i_flags_lock);
  266. __xfs_iflags_set(ip, flags);
  267. spin_unlock(&ip->i_flags_lock);
  268. }
  269. static inline void
  270. xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
  271. {
  272. spin_lock(&ip->i_flags_lock);
  273. ip->i_flags &= ~flags;
  274. spin_unlock(&ip->i_flags_lock);
  275. }
  276. static inline int
  277. __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
  278. {
  279. return (ip->i_flags & flags);
  280. }
  281. static inline int
  282. xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
  283. {
  284. int ret;
  285. spin_lock(&ip->i_flags_lock);
  286. ret = __xfs_iflags_test(ip, flags);
  287. spin_unlock(&ip->i_flags_lock);
  288. return ret;
  289. }
  290. static inline int
  291. xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags)
  292. {
  293. int ret;
  294. spin_lock(&ip->i_flags_lock);
  295. ret = ip->i_flags & flags;
  296. if (ret)
  297. ip->i_flags &= ~flags;
  298. spin_unlock(&ip->i_flags_lock);
  299. return ret;
  300. }
  301. /*
  302. * Manage the i_flush queue embedded in the inode. This completion
  303. * queue synchronizes processes attempting to flush the in-core
  304. * inode back to disk.
  305. */
  306. static inline void xfs_iflock(xfs_inode_t *ip)
  307. {
  308. wait_for_completion(&ip->i_flush);
  309. }
  310. static inline int xfs_iflock_nowait(xfs_inode_t *ip)
  311. {
  312. return try_wait_for_completion(&ip->i_flush);
  313. }
  314. static inline void xfs_ifunlock(xfs_inode_t *ip)
  315. {
  316. complete(&ip->i_flush);
  317. }
  318. /*
  319. * In-core inode flags.
  320. */
  321. #define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */
  322. #define XFS_ISTALE 0x0002 /* inode has been staled */
  323. #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */
  324. #define XFS_INEW 0x0008 /* inode has just been allocated */
  325. #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */
  326. #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */
  327. /*
  328. * Flags for inode locking.
  329. * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield)
  330. * 1<<16 - 1<<32-1 -- lockdep annotation (integers)
  331. */
  332. #define XFS_IOLOCK_EXCL (1<<0)
  333. #define XFS_IOLOCK_SHARED (1<<1)
  334. #define XFS_ILOCK_EXCL (1<<2)
  335. #define XFS_ILOCK_SHARED (1<<3)
  336. #define XFS_IUNLOCK_NONOTIFY (1<<4)
  337. #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \
  338. | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED)
  339. #define XFS_LOCK_FLAGS \
  340. { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \
  341. { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \
  342. { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \
  343. { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \
  344. { XFS_IUNLOCK_NONOTIFY, "IUNLOCK_NONOTIFY" }
  345. /*
  346. * Flags for lockdep annotations.
  347. *
  348. * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes
  349. * (ie directory operations that require locking a directory inode and
  350. * an entry inode). The first inode gets locked with this flag so it
  351. * gets a lockdep subclass of 1 and the second lock will have a lockdep
  352. * subclass of 0.
  353. *
  354. * XFS_LOCK_INUMORDER - for locking several inodes at the some time
  355. * with xfs_lock_inodes(). This flag is used as the starting subclass
  356. * and each subsequent lock acquired will increment the subclass by one.
  357. * So the first lock acquired will have a lockdep subclass of 2, the
  358. * second lock will have a lockdep subclass of 3, and so on. It is
  359. * the responsibility of the class builder to shift this to the correct
  360. * portion of the lock_mode lockdep mask.
  361. */
  362. #define XFS_LOCK_PARENT 1
  363. #define XFS_LOCK_INUMORDER 2
  364. #define XFS_IOLOCK_SHIFT 16
  365. #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT)
  366. #define XFS_ILOCK_SHIFT 24
  367. #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT)
  368. #define XFS_IOLOCK_DEP_MASK 0x00ff0000
  369. #define XFS_ILOCK_DEP_MASK 0xff000000
  370. #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK)
  371. #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT)
  372. #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT)
  373. /*
  374. * Flags for xfs_itruncate_start().
  375. */
  376. #define XFS_ITRUNC_DEFINITE 0x1
  377. #define XFS_ITRUNC_MAYBE 0x2
  378. #define XFS_ITRUNC_FLAGS \
  379. { XFS_ITRUNC_DEFINITE, "DEFINITE" }, \
  380. { XFS_ITRUNC_MAYBE, "MAYBE" }
  381. /*
  382. * For multiple groups support: if S_ISGID bit is set in the parent
  383. * directory, group of new file is set to that of the parent, and
  384. * new subdirectory gets S_ISGID bit from parent.
  385. */
  386. #define XFS_INHERIT_GID(pip) \
  387. (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \
  388. ((pip)->i_d.di_mode & S_ISGID))
  389. /*
  390. * xfs_iget.c prototypes.
  391. */
  392. int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
  393. uint, uint, xfs_inode_t **);
  394. void xfs_ilock(xfs_inode_t *, uint);
  395. int xfs_ilock_nowait(xfs_inode_t *, uint);
  396. void xfs_iunlock(xfs_inode_t *, uint);
  397. void xfs_ilock_demote(xfs_inode_t *, uint);
  398. int xfs_isilocked(xfs_inode_t *, uint);
  399. uint xfs_ilock_map_shared(xfs_inode_t *);
  400. void xfs_iunlock_map_shared(xfs_inode_t *, uint);
  401. void xfs_inode_free(struct xfs_inode *ip);
  402. /*
  403. * xfs_inode.c prototypes.
  404. */
  405. int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
  406. xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t,
  407. int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
  408. uint xfs_ip2xflags(struct xfs_inode *);
  409. uint xfs_dic2xflags(struct xfs_dinode *);
  410. int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
  411. struct xfs_bmap_free *);
  412. int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
  413. int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
  414. xfs_fsize_t, int, int);
  415. int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
  416. void xfs_iext_realloc(xfs_inode_t *, int, int);
  417. void xfs_iunpin_wait(xfs_inode_t *);
  418. int xfs_iflush(xfs_inode_t *, uint);
  419. void xfs_ichgtime(xfs_inode_t *, int);
  420. void xfs_lock_inodes(xfs_inode_t **, int, uint);
  421. void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint);
  422. void xfs_synchronize_times(xfs_inode_t *);
  423. void xfs_mark_inode_dirty(xfs_inode_t *);
  424. void xfs_mark_inode_dirty_sync(xfs_inode_t *);
  425. #define IHOLD(ip) \
  426. do { \
  427. ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
  428. atomic_inc(&(VFS_I(ip)->i_count)); \
  429. trace_xfs_ihold(ip, _THIS_IP_); \
  430. } while (0)
  431. #define IRELE(ip) \
  432. do { \
  433. trace_xfs_irele(ip, _THIS_IP_); \
  434. iput(VFS_I(ip)); \
  435. } while (0)
  436. #endif /* __KERNEL__ */
  437. /*
  438. * Flags for xfs_iget()
  439. */
  440. #define XFS_IGET_CREATE 0x1
  441. #define XFS_IGET_UNTRUSTED 0x2
  442. int xfs_inotobp(struct xfs_mount *, struct xfs_trans *,
  443. xfs_ino_t, struct xfs_dinode **,
  444. struct xfs_buf **, int *, uint);
  445. int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
  446. struct xfs_inode *, struct xfs_dinode **,
  447. struct xfs_buf **, uint);
  448. int xfs_iread(struct xfs_mount *, struct xfs_trans *,
  449. struct xfs_inode *, uint);
  450. void xfs_dinode_to_disk(struct xfs_dinode *,
  451. struct xfs_icdinode *);
  452. void xfs_idestroy_fork(struct xfs_inode *, int);
  453. void xfs_idata_realloc(struct xfs_inode *, int, int);
  454. void xfs_iroot_realloc(struct xfs_inode *, int, int);
  455. int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int);
  456. int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int);
  457. xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
  458. void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t,
  459. xfs_bmbt_irec_t *, int);
  460. void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
  461. void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
  462. void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int);
  463. void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
  464. void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
  465. void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
  466. void xfs_iext_realloc_direct(xfs_ifork_t *, int);
  467. void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
  468. void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
  469. void xfs_iext_destroy(xfs_ifork_t *);
  470. xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
  471. xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
  472. xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
  473. void xfs_iext_irec_init(xfs_ifork_t *);
  474. xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
  475. void xfs_iext_irec_remove(xfs_ifork_t *, int);
  476. void xfs_iext_irec_compact(xfs_ifork_t *);
  477. void xfs_iext_irec_compact_pages(xfs_ifork_t *);
  478. void xfs_iext_irec_compact_full(xfs_ifork_t *);
  479. void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
  480. #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
  481. #ifdef DEBUG
  482. void xfs_isize_check(struct xfs_mount *, struct xfs_inode *,
  483. xfs_fsize_t);
  484. #else /* DEBUG */
  485. #define xfs_isize_check(mp, ip, isize)
  486. #endif /* DEBUG */
  487. #if defined(DEBUG)
  488. void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
  489. #else
  490. #define xfs_inobp_check(mp, bp)
  491. #endif /* DEBUG */
  492. extern struct kmem_zone *xfs_ifork_zone;
  493. extern struct kmem_zone *xfs_inode_zone;
  494. extern struct kmem_zone *xfs_ili_zone;
  495. #endif /* __XFS_INODE_H__ */