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. /*
  21. * Fork identifiers.
  22. */
  23. #define XFS_DATA_FORK 0
  24. #define XFS_ATTR_FORK 1
  25. /*
  26. * The following xfs_ext_irec_t struct introduces a second (top) level
  27. * to the in-core extent allocation scheme. These structs are allocated
  28. * in a contiguous block, creating an indirection array where each entry
  29. * (irec) contains a pointer to a buffer of in-core extent records which
  30. * it manages. Each extent buffer is 4k in size, since 4k is the system
  31. * page size on Linux i386 and systems with larger page sizes don't seem
  32. * to gain much, if anything, by using their native page size as the
  33. * extent buffer size. Also, using 4k extent buffers everywhere provides
  34. * a consistent interface for CXFS across different platforms.
  35. *
  36. * There is currently no limit on the number of irec's (extent lists)
  37. * allowed, so heavily fragmented files may require an indirection array
  38. * which spans multiple system pages of memory. The number of extents
  39. * which would require this amount of contiguous memory is very large
  40. * and should not cause problems in the foreseeable future. However,
  41. * if the memory needed for the contiguous array ever becomes a problem,
  42. * it is possible that a third level of indirection may be required.
  43. */
  44. typedef struct xfs_ext_irec {
  45. xfs_bmbt_rec_t *er_extbuf; /* block of extent records */
  46. xfs_extnum_t er_extoff; /* extent offset in file */
  47. xfs_extnum_t er_extcount; /* number of extents in page/block */
  48. } xfs_ext_irec_t;
  49. /*
  50. * File incore extent information, present for each of data & attr forks.
  51. */
  52. #define XFS_IEXT_BUFSZ 4096
  53. #define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t))
  54. #define XFS_INLINE_EXTS 2
  55. #define XFS_INLINE_DATA 32
  56. typedef struct xfs_ifork {
  57. int if_bytes; /* bytes in if_u1 */
  58. int if_real_bytes; /* bytes allocated in if_u1 */
  59. xfs_bmbt_block_t *if_broot; /* file's incore btree root */
  60. short if_broot_bytes; /* bytes allocated for root */
  61. unsigned char if_flags; /* per-fork flags */
  62. unsigned char if_ext_max; /* max # of extent records */
  63. xfs_extnum_t if_lastex; /* last if_extents used */
  64. union {
  65. xfs_bmbt_rec_t *if_extents; /* linear map file exts */
  66. xfs_ext_irec_t *if_ext_irec; /* irec map file exts */
  67. char *if_data; /* inline file data */
  68. } if_u1;
  69. union {
  70. xfs_bmbt_rec_t if_inline_ext[XFS_INLINE_EXTS];
  71. /* very small file extents */
  72. char if_inline_data[XFS_INLINE_DATA];
  73. /* very small file data */
  74. xfs_dev_t if_rdev; /* dev number if special */
  75. uuid_t if_uuid; /* mount point value */
  76. } if_u2;
  77. } xfs_ifork_t;
  78. /*
  79. * Flags for xfs_ichgtime().
  80. */
  81. #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */
  82. #define XFS_ICHGTIME_ACC 0x2 /* data fork access timestamp */
  83. #define XFS_ICHGTIME_CHG 0x4 /* inode field change timestamp */
  84. /*
  85. * Per-fork incore inode flags.
  86. */
  87. #define XFS_IFINLINE 0x01 /* Inline data is read in */
  88. #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */
  89. #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */
  90. #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */
  91. /*
  92. * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate().
  93. */
  94. #define XFS_IMAP_LOOKUP 0x1
  95. #define XFS_IMAP_BULKSTAT 0x2
  96. #ifdef __KERNEL__
  97. struct bhv_desc;
  98. struct bhv_vnode;
  99. struct cred;
  100. struct ktrace;
  101. struct xfs_buf;
  102. struct xfs_bmap_free;
  103. struct xfs_bmbt_irec;
  104. struct xfs_bmbt_block;
  105. struct xfs_inode;
  106. struct xfs_inode_log_item;
  107. struct xfs_mount;
  108. struct xfs_trans;
  109. struct xfs_dquot;
  110. #if defined(XFS_ILOCK_TRACE)
  111. #define XFS_ILOCK_KTRACE_SIZE 32
  112. extern ktrace_t *xfs_ilock_trace_buf;
  113. extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *);
  114. #else
  115. #define xfs_ilock_trace(i,n,f,ra)
  116. #endif
  117. typedef struct dm_attrs_s {
  118. __uint32_t da_dmevmask; /* DMIG event mask */
  119. __uint16_t da_dmstate; /* DMIG state info */
  120. __uint16_t da_pad; /* DMIG extra padding */
  121. } dm_attrs_t;
  122. typedef struct xfs_iocore {
  123. void *io_obj; /* pointer to container
  124. * inode or dcxvn structure */
  125. struct xfs_mount *io_mount; /* fs mount struct ptr */
  126. #ifdef DEBUG
  127. mrlock_t *io_lock; /* inode IO lock */
  128. mrlock_t *io_iolock; /* inode IO lock */
  129. #endif
  130. /* I/O state */
  131. xfs_fsize_t io_new_size; /* sz when write completes */
  132. /* Miscellaneous state. */
  133. unsigned int io_flags; /* IO related flags */
  134. /* DMAPI state */
  135. dm_attrs_t io_dmattrs;
  136. } xfs_iocore_t;
  137. #define io_dmevmask io_dmattrs.da_dmevmask
  138. #define io_dmstate io_dmattrs.da_dmstate
  139. #define XFS_IO_INODE(io) ((xfs_inode_t *) ((io)->io_obj))
  140. #define XFS_IO_DCXVN(io) ((dcxvn_t *) ((io)->io_obj))
  141. /*
  142. * Flags in the flags field
  143. */
  144. #define XFS_IOCORE_RT 0x1
  145. /*
  146. * xfs_iocore prototypes
  147. */
  148. extern void xfs_iocore_inode_init(struct xfs_inode *);
  149. extern void xfs_iocore_inode_reinit(struct xfs_inode *);
  150. /*
  151. * This is the type used in the xfs inode hash table.
  152. * An array of these is allocated for each mounted
  153. * file system to hash the inodes for that file system.
  154. */
  155. typedef struct xfs_ihash {
  156. struct xfs_inode *ih_next;
  157. rwlock_t ih_lock;
  158. uint ih_version;
  159. } xfs_ihash_t;
  160. #define XFS_IHASH(mp,ino) ((mp)->m_ihash + (((uint)(ino)) % (mp)->m_ihsize))
  161. /*
  162. * This is the xfs inode cluster hash. This hash is used by xfs_iflush to
  163. * find inodes that share a cluster and can be flushed to disk at the same
  164. * time.
  165. */
  166. typedef struct xfs_chashlist {
  167. struct xfs_chashlist *chl_next;
  168. struct xfs_chashlist *chl_prev;
  169. struct xfs_inode *chl_ip;
  170. xfs_daddr_t chl_blkno; /* starting block number of
  171. * the cluster */
  172. struct xfs_buf *chl_buf; /* the inode buffer */
  173. } xfs_chashlist_t;
  174. typedef struct xfs_chash {
  175. xfs_chashlist_t *ch_list;
  176. lock_t ch_lock;
  177. } xfs_chash_t;
  178. #define XFS_CHASH(mp,blk) ((mp)->m_chash + (((uint)blk) % (mp)->m_chsize))
  179. /*
  180. * This is the xfs in-core inode structure.
  181. * Most of the on-disk inode is embedded in the i_d field.
  182. *
  183. * The extent pointers/inline file space, however, are managed
  184. * separately. The memory for this information is pointed to by
  185. * the if_u1 unions depending on the type of the data.
  186. * This is used to linearize the array of extents for fast in-core
  187. * access. This is used until the file's number of extents
  188. * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers
  189. * are accessed through the buffer cache.
  190. *
  191. * Other state kept in the in-core inode is used for identification,
  192. * locking, transactional updating, etc of the inode.
  193. *
  194. * Generally, we do not want to hold the i_rlock while holding the
  195. * i_ilock. Hierarchy is i_iolock followed by i_rlock.
  196. *
  197. * xfs_iptr_t contains all the inode fields upto and including the
  198. * i_mnext and i_mprev fields, it is used as a marker in the inode
  199. * chain off the mount structure by xfs_sync calls.
  200. */
  201. typedef struct {
  202. struct xfs_ihash *ip_hash; /* pointer to hash header */
  203. struct xfs_inode *ip_next; /* inode hash link forw */
  204. struct xfs_inode *ip_mnext; /* next inode in mount list */
  205. struct xfs_inode *ip_mprev; /* ptr to prev inode */
  206. struct xfs_inode **ip_prevp; /* ptr to prev i_next */
  207. struct xfs_mount *ip_mount; /* fs mount struct ptr */
  208. } xfs_iptr_t;
  209. typedef struct xfs_inode {
  210. /* Inode linking and identification information. */
  211. struct xfs_ihash *i_hash; /* pointer to hash header */
  212. struct xfs_inode *i_next; /* inode hash link forw */
  213. struct xfs_inode *i_mnext; /* next inode in mount list */
  214. struct xfs_inode *i_mprev; /* ptr to prev inode */
  215. struct xfs_inode **i_prevp; /* ptr to prev i_next */
  216. struct xfs_mount *i_mount; /* fs mount struct ptr */
  217. struct list_head i_reclaim; /* reclaim list */
  218. struct bhv_desc i_bhv_desc; /* inode behavior descriptor*/
  219. struct xfs_dquot *i_udquot; /* user dquot */
  220. struct xfs_dquot *i_gdquot; /* group dquot */
  221. /* Inode location stuff */
  222. xfs_ino_t i_ino; /* inode number (agno/agino)*/
  223. xfs_daddr_t i_blkno; /* blkno of inode buffer */
  224. ushort i_len; /* len of inode buffer */
  225. ushort i_boffset; /* off of inode in buffer */
  226. /* Extent information. */
  227. xfs_ifork_t *i_afp; /* attribute fork pointer */
  228. xfs_ifork_t i_df; /* data fork */
  229. /* Transaction and locking information. */
  230. struct xfs_trans *i_transp; /* ptr to owning transaction*/
  231. struct xfs_inode_log_item *i_itemp; /* logging information */
  232. mrlock_t i_lock; /* inode lock */
  233. mrlock_t i_iolock; /* inode IO lock */
  234. sema_t i_flock; /* inode flush lock */
  235. atomic_t i_pincount; /* inode pin count */
  236. wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */
  237. spinlock_t i_flags_lock; /* inode i_flags lock */
  238. #ifdef HAVE_REFCACHE
  239. struct xfs_inode **i_refcache; /* ptr to entry in ref cache */
  240. struct xfs_inode *i_release; /* inode to unref */
  241. #endif
  242. /* I/O state */
  243. xfs_iocore_t i_iocore; /* I/O core */
  244. /* Miscellaneous state. */
  245. unsigned short i_flags; /* see defined flags below */
  246. unsigned char i_update_core; /* timestamps/size is dirty */
  247. unsigned char i_update_size; /* di_size field is dirty */
  248. unsigned int i_gen; /* generation count */
  249. unsigned int i_delayed_blks; /* count of delay alloc blks */
  250. xfs_dinode_core_t i_d; /* most of ondisk inode */
  251. xfs_chashlist_t *i_chash; /* cluster hash list header */
  252. struct xfs_inode *i_cnext; /* cluster hash link forward */
  253. struct xfs_inode *i_cprev; /* cluster hash link backward */
  254. /* Trace buffers per inode. */
  255. #ifdef XFS_BMAP_TRACE
  256. struct ktrace *i_xtrace; /* inode extent list trace */
  257. #endif
  258. #ifdef XFS_BMBT_TRACE
  259. struct ktrace *i_btrace; /* inode bmap btree trace */
  260. #endif
  261. #ifdef XFS_RW_TRACE
  262. struct ktrace *i_rwtrace; /* inode read/write trace */
  263. #endif
  264. #ifdef XFS_ILOCK_TRACE
  265. struct ktrace *i_lock_trace; /* inode lock/unlock trace */
  266. #endif
  267. #ifdef XFS_DIR2_TRACE
  268. struct ktrace *i_dir_trace; /* inode directory trace */
  269. #endif
  270. } xfs_inode_t;
  271. /*
  272. * i_flags helper functions
  273. */
  274. static inline void
  275. __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
  276. {
  277. ip->i_flags |= flags;
  278. }
  279. static inline void
  280. xfs_iflags_set(xfs_inode_t *ip, unsigned short flags)
  281. {
  282. spin_lock(&ip->i_flags_lock);
  283. __xfs_iflags_set(ip, flags);
  284. spin_unlock(&ip->i_flags_lock);
  285. }
  286. static inline void
  287. xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags)
  288. {
  289. spin_lock(&ip->i_flags_lock);
  290. ip->i_flags &= ~flags;
  291. spin_unlock(&ip->i_flags_lock);
  292. }
  293. static inline int
  294. __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
  295. {
  296. return (ip->i_flags & flags);
  297. }
  298. static inline int
  299. xfs_iflags_test(xfs_inode_t *ip, unsigned short flags)
  300. {
  301. int ret;
  302. spin_lock(&ip->i_flags_lock);
  303. ret = __xfs_iflags_test(ip, flags);
  304. spin_unlock(&ip->i_flags_lock);
  305. return ret;
  306. }
  307. #endif /* __KERNEL__ */
  308. /*
  309. * Fork handling.
  310. */
  311. #define XFS_IFORK_PTR(ip,w) \
  312. ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp)
  313. #define XFS_IFORK_Q(ip) XFS_CFORK_Q(&(ip)->i_d)
  314. #define XFS_IFORK_DSIZE(ip) XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount)
  315. #define XFS_IFORK_ASIZE(ip) XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount)
  316. #define XFS_IFORK_SIZE(ip,w) XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w)
  317. #define XFS_IFORK_FORMAT(ip,w) XFS_CFORK_FORMAT(&ip->i_d, w)
  318. #define XFS_IFORK_FMT_SET(ip,w,n) XFS_CFORK_FMT_SET(&ip->i_d, w, n)
  319. #define XFS_IFORK_NEXTENTS(ip,w) XFS_CFORK_NEXTENTS(&ip->i_d, w)
  320. #define XFS_IFORK_NEXT_SET(ip,w,n) XFS_CFORK_NEXT_SET(&ip->i_d, w, n)
  321. #ifdef __KERNEL__
  322. /*
  323. * In-core inode flags.
  324. */
  325. #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */
  326. #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */
  327. #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */
  328. #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */
  329. #define XFS_ISTALE 0x0010 /* inode has been staled */
  330. #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */
  331. #define XFS_INEW 0x0040
  332. /*
  333. * Flags for inode locking.
  334. */
  335. #define XFS_IOLOCK_EXCL 0x001
  336. #define XFS_IOLOCK_SHARED 0x002
  337. #define XFS_ILOCK_EXCL 0x004
  338. #define XFS_ILOCK_SHARED 0x008
  339. #define XFS_IUNLOCK_NONOTIFY 0x010
  340. /* XFS_IOLOCK_NESTED 0x020 */
  341. #define XFS_EXTENT_TOKEN_RD 0x040
  342. #define XFS_SIZE_TOKEN_RD 0x080
  343. #define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD)
  344. #define XFS_WILLLEND 0x100 /* Always acquire tokens for lending */
  345. #define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND)
  346. #define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND)
  347. #define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND)
  348. /* XFS_SIZE_TOKEN_WANT 0x200 */
  349. #define XFS_LOCK_MASK \
  350. (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED | XFS_ILOCK_EXCL | \
  351. XFS_ILOCK_SHARED | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD | \
  352. XFS_WILLLEND)
  353. /*
  354. * Flags for xfs_iflush()
  355. */
  356. #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1
  357. #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2
  358. #define XFS_IFLUSH_SYNC 3
  359. #define XFS_IFLUSH_ASYNC 4
  360. #define XFS_IFLUSH_DELWRI 5
  361. /*
  362. * Flags for xfs_itruncate_start().
  363. */
  364. #define XFS_ITRUNC_DEFINITE 0x1
  365. #define XFS_ITRUNC_MAYBE 0x2
  366. #define XFS_ITOV(ip) BHV_TO_VNODE(XFS_ITOBHV(ip))
  367. #define XFS_ITOV_NULL(ip) BHV_TO_VNODE_NULL(XFS_ITOBHV(ip))
  368. #define XFS_ITOBHV(ip) ((struct bhv_desc *)(&((ip)->i_bhv_desc)))
  369. #define XFS_BHVTOI(bhvp) ((xfs_inode_t *)((char *)(bhvp) - \
  370. (char *)&(((xfs_inode_t *)0)->i_bhv_desc)))
  371. #define BHV_IS_XFS(bdp) (BHV_OPS(bdp) == &xfs_vnodeops)
  372. /*
  373. * For multiple groups support: if S_ISGID bit is set in the parent
  374. * directory, group of new file is set to that of the parent, and
  375. * new subdirectory gets S_ISGID bit from parent.
  376. */
  377. #define XFS_INHERIT_GID(pip, vfsp) \
  378. (((vfsp)->vfs_flag & VFS_GRPID) || ((pip)->i_d.di_mode & S_ISGID))
  379. /*
  380. * Flags for xfs_iget()
  381. */
  382. #define XFS_IGET_CREATE 0x1
  383. #define XFS_IGET_BULKSTAT 0x2
  384. /*
  385. * xfs_iget.c prototypes.
  386. */
  387. void xfs_ihash_init(struct xfs_mount *);
  388. void xfs_ihash_free(struct xfs_mount *);
  389. void xfs_chash_init(struct xfs_mount *);
  390. void xfs_chash_free(struct xfs_mount *);
  391. xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t,
  392. struct xfs_trans *);
  393. void xfs_inode_lock_init(xfs_inode_t *, struct bhv_vnode *);
  394. int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
  395. uint, uint, xfs_inode_t **, xfs_daddr_t);
  396. void xfs_iput(xfs_inode_t *, uint);
  397. void xfs_iput_new(xfs_inode_t *, uint);
  398. void xfs_ilock(xfs_inode_t *, uint);
  399. int xfs_ilock_nowait(xfs_inode_t *, uint);
  400. void xfs_iunlock(xfs_inode_t *, uint);
  401. void xfs_ilock_demote(xfs_inode_t *, uint);
  402. void xfs_iflock(xfs_inode_t *);
  403. int xfs_iflock_nowait(xfs_inode_t *);
  404. uint xfs_ilock_map_shared(xfs_inode_t *);
  405. void xfs_iunlock_map_shared(xfs_inode_t *, uint);
  406. void xfs_ifunlock(xfs_inode_t *);
  407. void xfs_ireclaim(xfs_inode_t *);
  408. int xfs_finish_reclaim(xfs_inode_t *, int, int);
  409. int xfs_finish_reclaim_all(struct xfs_mount *, int);
  410. /*
  411. * xfs_inode.c prototypes.
  412. */
  413. int xfs_itobp(struct xfs_mount *, struct xfs_trans *,
  414. xfs_inode_t *, xfs_dinode_t **, struct xfs_buf **,
  415. xfs_daddr_t, uint);
  416. int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t,
  417. xfs_inode_t **, xfs_daddr_t, uint);
  418. int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int);
  419. int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t,
  420. xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t,
  421. int, struct xfs_buf **, boolean_t *, xfs_inode_t **);
  422. void xfs_xlate_dinode_core(xfs_caddr_t, struct xfs_dinode_core *,
  423. int);
  424. uint xfs_ip2xflags(struct xfs_inode *);
  425. uint xfs_dic2xflags(struct xfs_dinode_core *);
  426. int xfs_ifree(struct xfs_trans *, xfs_inode_t *,
  427. struct xfs_bmap_free *);
  428. void xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t);
  429. int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *,
  430. xfs_fsize_t, int, int);
  431. int xfs_iunlink(struct xfs_trans *, xfs_inode_t *);
  432. int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *);
  433. void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *,
  434. xfs_fsize_t, int);
  435. void xfs_idestroy_fork(xfs_inode_t *, int);
  436. void xfs_idestroy(xfs_inode_t *);
  437. void xfs_idata_realloc(xfs_inode_t *, int, int);
  438. void xfs_iextract(xfs_inode_t *);
  439. void xfs_iext_realloc(xfs_inode_t *, int, int);
  440. void xfs_iroot_realloc(xfs_inode_t *, int, int);
  441. void xfs_ipin(xfs_inode_t *);
  442. void xfs_iunpin(xfs_inode_t *);
  443. int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int);
  444. int xfs_iflush(xfs_inode_t *, uint);
  445. void xfs_iflush_all(struct xfs_mount *);
  446. int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *);
  447. uint xfs_iroundup(uint);
  448. void xfs_ichgtime(xfs_inode_t *, int);
  449. xfs_fsize_t xfs_file_last_byte(xfs_inode_t *);
  450. void xfs_lock_inodes(xfs_inode_t **, int, int, uint);
  451. xfs_inode_t *xfs_vtoi(struct bhv_vnode *vp);
  452. void xfs_synchronize_atime(xfs_inode_t *);
  453. xfs_bmbt_rec_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t);
  454. void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t,
  455. xfs_bmbt_irec_t *);
  456. void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int);
  457. void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int);
  458. void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int);
  459. void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int);
  460. void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int);
  461. void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int);
  462. void xfs_iext_realloc_direct(xfs_ifork_t *, int);
  463. void xfs_iext_realloc_indirect(xfs_ifork_t *, int);
  464. void xfs_iext_indirect_to_direct(xfs_ifork_t *);
  465. void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t);
  466. void xfs_iext_inline_to_direct(xfs_ifork_t *, int);
  467. void xfs_iext_destroy(xfs_ifork_t *);
  468. xfs_bmbt_rec_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *);
  469. xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *);
  470. xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int);
  471. void xfs_iext_irec_init(xfs_ifork_t *);
  472. xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int);
  473. void xfs_iext_irec_remove(xfs_ifork_t *, int);
  474. void xfs_iext_irec_compact(xfs_ifork_t *);
  475. void xfs_iext_irec_compact_pages(xfs_ifork_t *);
  476. void xfs_iext_irec_compact_full(xfs_ifork_t *);
  477. void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int);
  478. #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount))
  479. #ifdef DEBUG
  480. void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t);
  481. #else /* DEBUG */
  482. #define xfs_isize_check(mp, ip, isize)
  483. #endif /* DEBUG */
  484. #if defined(DEBUG)
  485. void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *);
  486. #else
  487. #define xfs_inobp_check(mp, bp)
  488. #endif /* DEBUG */
  489. extern struct kmem_zone *xfs_chashlist_zone;
  490. extern struct kmem_zone *xfs_ifork_zone;
  491. extern struct kmem_zone *xfs_inode_zone;
  492. extern struct kmem_zone *xfs_ili_zone;
  493. #endif /* __KERNEL__ */
  494. #endif /* __XFS_INODE_H__ */