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 union { 71 xfs_bmbt_rec_host_t *if_extents;/* linear map file exts */ 72 xfs_ext_irec_t *if_ext_irec; /* irec map file exts */ 73 char *if_data; /* inline file data */ 74 } if_u1; 75 union { 76 xfs_bmbt_rec_host_t if_inline_ext[XFS_INLINE_EXTS]; 77 /* very small file extents */ 78 char if_inline_data[XFS_INLINE_DATA]; 79 /* very small file data */ 80 xfs_dev_t if_rdev; /* dev number if special */ 81 uuid_t if_uuid; /* mount point value */ 82 } if_u2; 83 } xfs_ifork_t; 84 85 /* 86 * Inode location information. Stored in the inode and passed to 87 * xfs_imap_to_bp() to get a buffer and dinode for a given inode. 88 */ 89 struct xfs_imap { 90 xfs_daddr_t im_blkno; /* starting BB of inode chunk */ 91 ushort im_len; /* length in BBs of inode chunk */ 92 ushort im_boffset; /* inode offset in block in bytes */ 93 }; 94 95 /* 96 * This is the xfs in-core inode structure. 97 * Most of the on-disk inode is embedded in the i_d field. 98 * 99 * The extent pointers/inline file space, however, are managed 100 * separately. The memory for this information is pointed to by 101 * the if_u1 unions depending on the type of the data. 102 * This is used to linearize the array of extents for fast in-core 103 * access. This is used until the file's number of extents 104 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers 105 * are accessed through the buffer cache. 106 * 107 * Other state kept in the in-core inode is used for identification, 108 * locking, transactional updating, etc of the inode. 109 * 110 * Generally, we do not want to hold the i_rlock while holding the 111 * i_ilock. Hierarchy is i_iolock followed by i_rlock. 112 * 113 * xfs_iptr_t contains all the inode fields up to and including the 114 * i_mnext and i_mprev fields, it is used as a marker in the inode 115 * chain off the mount structure by xfs_sync calls. 116 */ 117 118 typedef struct xfs_ictimestamp { 119 __int32_t t_sec; /* timestamp seconds */ 120 __int32_t t_nsec; /* timestamp nanoseconds */ 121 } xfs_ictimestamp_t; 122 123 /* 124 * NOTE: This structure must be kept identical to struct xfs_dinode 125 * in xfs_dinode.h except for the endianness annotations. 126 */ 127 typedef struct xfs_icdinode { 128 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 129 __uint16_t di_mode; /* mode and type of file */ 130 __int8_t di_version; /* inode version */ 131 __int8_t di_format; /* format of di_c data */ 132 __uint16_t di_onlink; /* old number of links to file */ 133 __uint32_t di_uid; /* owner's user id */ 134 __uint32_t di_gid; /* owner's group id */ 135 __uint32_t di_nlink; /* number of links to file */ 136 __uint16_t di_projid_lo; /* lower part of owner's project id */ 137 __uint16_t di_projid_hi; /* higher part of owner's project id */ 138 __uint8_t di_pad[6]; /* 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 */ 154 } xfs_icdinode_t; 155 156 /* 157 * Flags for xfs_ichgtime(). 158 */ 159 #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ 160 #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ 161 162 /* 163 * Per-fork incore inode flags. 164 */ 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 */ 169 170 /* 171 * Fork handling. 172 */ 173 174 #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) 175 #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) 176 177 #define XFS_IFORK_PTR(ip,w) \ 178 ((w) == XFS_DATA_FORK ? \ 179 &(ip)->i_df : \ 180 (ip)->i_afp) 181 #define XFS_IFORK_DSIZE(ip) \ 182 (XFS_IFORK_Q(ip) ? \ 183 XFS_IFORK_BOFF(ip) : \ 184 XFS_LITINO((ip)->i_mount)) 185 #define XFS_IFORK_ASIZE(ip) \ 186 (XFS_IFORK_Q(ip) ? \ 187 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ 188 0) 189 #define XFS_IFORK_SIZE(ip,w) \ 190 ((w) == XFS_DATA_FORK ? \ 191 XFS_IFORK_DSIZE(ip) : \ 192 XFS_IFORK_ASIZE(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))) 209 210 211 212 #ifdef __KERNEL__ 213 214 struct bhv_desc; 215 struct xfs_buf; 216 struct xfs_bmap_free; 217 struct xfs_bmbt_irec; 218 struct xfs_inode_log_item; 219 struct xfs_mount; 220 struct xfs_trans; 221 struct xfs_dquot; 222 223 typedef struct dm_attrs_s { 224 __uint32_t da_dmevmask; /* DMIG event mask */ 225 __uint16_t da_dmstate; /* DMIG state info */ 226 __uint16_t da_pad; /* DMIG extra padding */ 227 } dm_attrs_t; 228 229 typedef struct xfs_inode { 230 /* Inode linking and identification information. */ 231 struct xfs_mount *i_mount; /* fs mount struct ptr */ 232 struct xfs_dquot *i_udquot; /* user dquot */ 233 struct xfs_dquot *i_gdquot; /* group dquot */ 234 235 /* Inode location stuff */ 236 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 237 struct xfs_imap i_imap; /* location for xfs_imap() */ 238 239 /* Extent information. */ 240 xfs_ifork_t *i_afp; /* attribute fork pointer */ 241 xfs_ifork_t i_df; /* data fork */ 242 243 /* Transaction and locking information. */ 244 struct xfs_inode_log_item *i_itemp; /* logging information */ 245 mrlock_t i_lock; /* inode lock */ 246 mrlock_t i_iolock; /* inode IO lock */ 247 struct completion i_flush; /* inode flush completion q */ 248 atomic_t i_pincount; /* inode pin count */ 249 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ 250 spinlock_t i_flags_lock; /* inode i_flags lock */ 251 /* Miscellaneous state. */ 252 unsigned short i_flags; /* see defined flags below */ 253 unsigned char i_update_core; /* timestamps/size is dirty */ 254 unsigned int i_delayed_blks; /* count of delay alloc blks */ 255 256 xfs_icdinode_t i_d; /* most of ondisk inode */ 257 258 xfs_fsize_t i_size; /* in-memory size */ 259 xfs_fsize_t i_new_size; /* size when write completes */ 260 atomic_t i_iocount; /* outstanding I/O count */ 261 262 /* VFS inode */ 263 struct inode i_vnode; /* embedded VFS inode */ 264 } xfs_inode_t; 265 266 #define XFS_ISIZE(ip) S_ISREG((ip)->i_d.di_mode) ? \ 267 (ip)->i_size : (ip)->i_d.di_size; 268 269 /* Convert from vfs inode to xfs inode */ 270 static inline struct xfs_inode *XFS_I(struct inode *inode) 271 { 272 return container_of(inode, struct xfs_inode, i_vnode); 273 } 274 275 /* convert from xfs inode to vfs inode */ 276 static inline struct inode *VFS_I(struct xfs_inode *ip) 277 { 278 return &ip->i_vnode; 279 } 280 281 /* 282 * i_flags helper functions 283 */ 284 static inline void 285 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 286 { 287 ip->i_flags |= flags; 288 } 289 290 static inline void 291 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 292 { 293 spin_lock(&ip->i_flags_lock); 294 __xfs_iflags_set(ip, flags); 295 spin_unlock(&ip->i_flags_lock); 296 } 297 298 static inline void 299 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 300 { 301 spin_lock(&ip->i_flags_lock); 302 ip->i_flags &= ~flags; 303 spin_unlock(&ip->i_flags_lock); 304 } 305 306 static inline int 307 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 308 { 309 return (ip->i_flags & flags); 310 } 311 312 static inline int 313 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 314 { 315 int ret; 316 spin_lock(&ip->i_flags_lock); 317 ret = __xfs_iflags_test(ip, flags); 318 spin_unlock(&ip->i_flags_lock); 319 return ret; 320 } 321 322 static inline int 323 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) 324 { 325 int ret; 326 327 spin_lock(&ip->i_flags_lock); 328 ret = ip->i_flags & flags; 329 if (ret) 330 ip->i_flags &= ~flags; 331 spin_unlock(&ip->i_flags_lock); 332 return ret; 333 } 334 335 /* 336 * Project quota id helpers (previously projid was 16bit only 337 * and using two 16bit values to hold new 32bit projid was chosen 338 * to retain compatibility with "old" filesystems). 339 */ 340 static inline prid_t 341 xfs_get_projid(struct xfs_inode *ip) 342 { 343 return (prid_t)ip->i_d.di_projid_hi << 16 | ip->i_d.di_projid_lo; 344 } 345 346 static inline void 347 xfs_set_projid(struct xfs_inode *ip, 348 prid_t projid) 349 { 350 ip->i_d.di_projid_hi = (__uint16_t) (projid >> 16); 351 ip->i_d.di_projid_lo = (__uint16_t) (projid & 0xffff); 352 } 353 354 /* 355 * Manage the i_flush queue embedded in the inode. This completion 356 * queue synchronizes processes attempting to flush the in-core 357 * inode back to disk. 358 */ 359 static inline void xfs_iflock(xfs_inode_t *ip) 360 { 361 wait_for_completion(&ip->i_flush); 362 } 363 364 static inline int xfs_iflock_nowait(xfs_inode_t *ip) 365 { 366 return try_wait_for_completion(&ip->i_flush); 367 } 368 369 static inline void xfs_ifunlock(xfs_inode_t *ip) 370 { 371 complete(&ip->i_flush); 372 } 373 374 /* 375 * In-core inode flags. 376 */ 377 #define XFS_IRECLAIM 0x0001 /* started reclaiming this inode */ 378 #define XFS_ISTALE 0x0002 /* inode has been staled */ 379 #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */ 380 #define XFS_INEW 0x0008 /* inode has just been allocated */ 381 #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */ 382 #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */ 383 #define XFS_IDIRTY_RELEASE 0x0040 /* dirty release already seen */ 384 385 /* 386 * Per-lifetime flags need to be reset when re-using a reclaimable inode during 387 * inode lookup. Thi prevents unintended behaviour on the new inode from 388 * ocurring. 389 */ 390 #define XFS_IRECLAIM_RESET_FLAGS \ 391 (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ 392 XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | \ 393 XFS_IFILESTREAM); 394 395 /* 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) 399 */ 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) 405 406 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 407 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) 408 409 #define XFS_LOCK_FLAGS \ 410 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ 411 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ 412 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ 413 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ 414 { XFS_IUNLOCK_NONOTIFY, "IUNLOCK_NONOTIFY" } 415 416 417 /* 418 * Flags for lockdep annotations. 419 * 420 * XFS_LOCK_PARENT - for directory operations that require locking a 421 * parent directory inode and a child entry inode. The parent gets locked 422 * with this flag so it gets a lockdep subclass of 1 and the child entry 423 * lock will have a lockdep subclass of 0. 424 * 425 * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary 426 * inodes do not participate in the normal lock order, and thus have their 427 * own subclasses. 428 * 429 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 430 * with xfs_lock_inodes(). This flag is used as the starting subclass 431 * and each subsequent lock acquired will increment the subclass by one. 432 * So the first lock acquired will have a lockdep subclass of 4, the 433 * second lock will have a lockdep subclass of 5, and so on. It is 434 * the responsibility of the class builder to shift this to the correct 435 * portion of the lock_mode lockdep mask. 436 */ 437 #define XFS_LOCK_PARENT 1 438 #define XFS_LOCK_RTBITMAP 2 439 #define XFS_LOCK_RTSUM 3 440 #define XFS_LOCK_INUMORDER 4 441 442 #define XFS_IOLOCK_SHIFT 16 443 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) 444 445 #define XFS_ILOCK_SHIFT 24 446 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) 447 #define XFS_ILOCK_RTBITMAP (XFS_LOCK_RTBITMAP << XFS_ILOCK_SHIFT) 448 #define XFS_ILOCK_RTSUM (XFS_LOCK_RTSUM << XFS_ILOCK_SHIFT) 449 450 #define XFS_IOLOCK_DEP_MASK 0x00ff0000 451 #define XFS_ILOCK_DEP_MASK 0xff000000 452 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) 453 454 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) 455 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) 456 457 extern struct lock_class_key xfs_iolock_reclaimable; 458 459 /* 460 * For multiple groups support: if S_ISGID bit is set in the parent 461 * directory, group of new file is set to that of the parent, and 462 * new subdirectory gets S_ISGID bit from parent. 463 */ 464 #define XFS_INHERIT_GID(pip) \ 465 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ 466 ((pip)->i_d.di_mode & S_ISGID)) 467 468 /* 469 * xfs_iget.c prototypes. 470 */ 471 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 472 uint, uint, xfs_inode_t **); 473 void xfs_ilock(xfs_inode_t *, uint); 474 int xfs_ilock_nowait(xfs_inode_t *, uint); 475 void xfs_iunlock(xfs_inode_t *, uint); 476 void xfs_ilock_demote(xfs_inode_t *, uint); 477 int xfs_isilocked(xfs_inode_t *, uint); 478 uint xfs_ilock_map_shared(xfs_inode_t *); 479 void xfs_iunlock_map_shared(xfs_inode_t *, uint); 480 void xfs_inode_free(struct xfs_inode *ip); 481 482 /* 483 * xfs_inode.c prototypes. 484 */ 485 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, 486 xfs_nlink_t, xfs_dev_t, prid_t, int, 487 struct xfs_buf **, boolean_t *, xfs_inode_t **); 488 489 uint xfs_ip2xflags(struct xfs_inode *); 490 uint xfs_dic2xflags(struct xfs_dinode *); 491 int xfs_ifree(struct xfs_trans *, xfs_inode_t *, 492 struct xfs_bmap_free *); 493 int xfs_itruncate_extents(struct xfs_trans **, struct xfs_inode *, 494 int, xfs_fsize_t); 495 int xfs_itruncate_data(struct xfs_trans **, struct xfs_inode *, 496 xfs_fsize_t); 497 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); 498 499 void xfs_iext_realloc(xfs_inode_t *, int, int); 500 void xfs_iunpin_wait(xfs_inode_t *); 501 int xfs_iflush(xfs_inode_t *, uint); 502 void xfs_lock_inodes(xfs_inode_t **, int, uint); 503 void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); 504 505 void xfs_synchronize_times(xfs_inode_t *); 506 void xfs_mark_inode_dirty(xfs_inode_t *); 507 void xfs_mark_inode_dirty_sync(xfs_inode_t *); 508 509 #define IHOLD(ip) \ 510 do { \ 511 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ 512 ihold(VFS_I(ip)); \ 513 trace_xfs_ihold(ip, _THIS_IP_); \ 514 } while (0) 515 516 #define IRELE(ip) \ 517 do { \ 518 trace_xfs_irele(ip, _THIS_IP_); \ 519 iput(VFS_I(ip)); \ 520 } while (0) 521 522 #endif /* __KERNEL__ */ 523 524 /* 525 * Flags for xfs_iget() 526 */ 527 #define XFS_IGET_CREATE 0x1 528 #define XFS_IGET_UNTRUSTED 0x2 529 530 int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, 531 xfs_ino_t, struct xfs_dinode **, 532 struct xfs_buf **, int *, uint); 533 int xfs_itobp(struct xfs_mount *, struct xfs_trans *, 534 struct xfs_inode *, struct xfs_dinode **, 535 struct xfs_buf **, uint); 536 int xfs_iread(struct xfs_mount *, struct xfs_trans *, 537 struct xfs_inode *, uint); 538 void xfs_dinode_to_disk(struct xfs_dinode *, 539 struct xfs_icdinode *); 540 void xfs_idestroy_fork(struct xfs_inode *, int); 541 void xfs_idata_realloc(struct xfs_inode *, int, int); 542 void xfs_iroot_realloc(struct xfs_inode *, int, int); 543 int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); 544 int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); 545 546 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); 547 void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t, 548 xfs_bmbt_irec_t *, int); 549 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); 550 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); 551 void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int); 552 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); 553 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); 554 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); 555 void xfs_iext_realloc_direct(xfs_ifork_t *, int); 556 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); 557 void xfs_iext_inline_to_direct(xfs_ifork_t *, int); 558 void xfs_iext_destroy(xfs_ifork_t *); 559 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); 560 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); 561 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); 562 void xfs_iext_irec_init(xfs_ifork_t *); 563 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); 564 void xfs_iext_irec_remove(xfs_ifork_t *, int); 565 void xfs_iext_irec_compact(xfs_ifork_t *); 566 void xfs_iext_irec_compact_pages(xfs_ifork_t *); 567 void xfs_iext_irec_compact_full(xfs_ifork_t *); 568 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); 569 570 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 571 572 #if defined(DEBUG) 573 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); 574 #else 575 #define xfs_inobp_check(mp, bp) 576 #endif /* DEBUG */ 577 578 extern struct kmem_zone *xfs_ifork_zone; 579 extern struct kmem_zone *xfs_inode_zone; 580 extern struct kmem_zone *xfs_ili_zone; 581 582 #endif /* __XFS_INODE_H__ */ 583