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 xfs_dinode; 22 struct xfs_dinode_core; 23 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 xfs_bmbt_block_t *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 * Flags for xfs_ichgtime(). 88 */ 89 #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ 90 #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ 91 92 /* 93 * Per-fork incore inode flags. 94 */ 95 #define XFS_IFINLINE 0x01 /* Inline data is read in */ 96 #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ 97 #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ 98 #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ 99 100 /* 101 * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate(). 102 */ 103 #define XFS_IMAP_LOOKUP 0x1 104 #define XFS_IMAP_BULKSTAT 0x2 105 106 #ifdef __KERNEL__ 107 struct bhv_desc; 108 struct cred; 109 struct ktrace; 110 struct xfs_buf; 111 struct xfs_bmap_free; 112 struct xfs_bmbt_irec; 113 struct xfs_bmbt_block; 114 struct xfs_inode; 115 struct xfs_inode_log_item; 116 struct xfs_mount; 117 struct xfs_trans; 118 struct xfs_dquot; 119 120 #if defined(XFS_ILOCK_TRACE) 121 #define XFS_ILOCK_KTRACE_SIZE 32 122 extern ktrace_t *xfs_ilock_trace_buf; 123 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); 124 #else 125 #define xfs_ilock_trace(i,n,f,ra) 126 #endif 127 128 typedef struct dm_attrs_s { 129 __uint32_t da_dmevmask; /* DMIG event mask */ 130 __uint16_t da_dmstate; /* DMIG state info */ 131 __uint16_t da_pad; /* DMIG extra padding */ 132 } dm_attrs_t; 133 134 /* 135 * This is the xfs in-core inode structure. 136 * Most of the on-disk inode is embedded in the i_d field. 137 * 138 * The extent pointers/inline file space, however, are managed 139 * separately. The memory for this information is pointed to by 140 * the if_u1 unions depending on the type of the data. 141 * This is used to linearize the array of extents for fast in-core 142 * access. This is used until the file's number of extents 143 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers 144 * are accessed through the buffer cache. 145 * 146 * Other state kept in the in-core inode is used for identification, 147 * locking, transactional updating, etc of the inode. 148 * 149 * Generally, we do not want to hold the i_rlock while holding the 150 * i_ilock. Hierarchy is i_iolock followed by i_rlock. 151 * 152 * xfs_iptr_t contains all the inode fields upto and including the 153 * i_mnext and i_mprev fields, it is used as a marker in the inode 154 * chain off the mount structure by xfs_sync calls. 155 */ 156 157 typedef struct xfs_ictimestamp { 158 __int32_t t_sec; /* timestamp seconds */ 159 __int32_t t_nsec; /* timestamp nanoseconds */ 160 } xfs_ictimestamp_t; 161 162 /* 163 * NOTE: This structure must be kept identical to struct xfs_dinode_core 164 * in xfs_dinode.h except for the endianess annotations. 165 */ 166 typedef struct xfs_icdinode { 167 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 168 __uint16_t di_mode; /* mode and type of file */ 169 __int8_t di_version; /* inode version */ 170 __int8_t di_format; /* format of di_c data */ 171 __uint16_t di_onlink; /* old number of links to file */ 172 __uint32_t di_uid; /* owner's user id */ 173 __uint32_t di_gid; /* owner's group id */ 174 __uint32_t di_nlink; /* number of links to file */ 175 __uint16_t di_projid; /* owner's project id */ 176 __uint8_t di_pad[8]; /* unused, zeroed space */ 177 __uint16_t di_flushiter; /* incremented on flush */ 178 xfs_ictimestamp_t di_atime; /* time last accessed */ 179 xfs_ictimestamp_t di_mtime; /* time last modified */ 180 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 181 xfs_fsize_t di_size; /* number of bytes in file */ 182 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ 183 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 184 xfs_extnum_t di_nextents; /* number of extents in data fork */ 185 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 186 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 187 __int8_t di_aformat; /* format of attr fork's data */ 188 __uint32_t di_dmevmask; /* DMIG event mask */ 189 __uint16_t di_dmstate; /* DMIG state info */ 190 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 191 __uint32_t di_gen; /* generation number */ 192 } xfs_icdinode_t; 193 194 typedef struct { 195 struct xfs_inode *ip_mnext; /* next inode in mount list */ 196 struct xfs_inode *ip_mprev; /* ptr to prev inode */ 197 struct xfs_mount *ip_mount; /* fs mount struct ptr */ 198 } xfs_iptr_t; 199 200 typedef struct xfs_inode { 201 /* Inode linking and identification information. */ 202 struct xfs_inode *i_mnext; /* next inode in mount list */ 203 struct xfs_inode *i_mprev; /* ptr to prev inode */ 204 struct xfs_mount *i_mount; /* fs mount struct ptr */ 205 struct list_head i_reclaim; /* reclaim list */ 206 struct inode *i_vnode; /* vnode backpointer */ 207 struct xfs_dquot *i_udquot; /* user dquot */ 208 struct xfs_dquot *i_gdquot; /* group dquot */ 209 210 /* Inode location stuff */ 211 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 212 xfs_daddr_t i_blkno; /* blkno of inode buffer */ 213 ushort i_len; /* len of inode buffer */ 214 ushort i_boffset; /* off of inode in buffer */ 215 216 /* Extent information. */ 217 xfs_ifork_t *i_afp; /* attribute fork pointer */ 218 xfs_ifork_t i_df; /* data fork */ 219 220 /* Transaction and locking information. */ 221 struct xfs_trans *i_transp; /* ptr to owning transaction*/ 222 struct xfs_inode_log_item *i_itemp; /* logging information */ 223 mrlock_t i_lock; /* inode lock */ 224 mrlock_t i_iolock; /* inode IO lock */ 225 struct completion i_flush; /* inode flush completion q */ 226 atomic_t i_pincount; /* inode pin count */ 227 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ 228 spinlock_t i_flags_lock; /* inode i_flags lock */ 229 /* Miscellaneous state. */ 230 unsigned short i_flags; /* see defined flags below */ 231 unsigned char i_update_core; /* timestamps/size is dirty */ 232 unsigned char i_update_size; /* di_size field is dirty */ 233 unsigned int i_gen; /* generation count */ 234 unsigned int i_delayed_blks; /* count of delay alloc blks */ 235 236 xfs_icdinode_t i_d; /* most of ondisk inode */ 237 238 xfs_fsize_t i_size; /* in-memory size */ 239 xfs_fsize_t i_new_size; /* size when write completes */ 240 atomic_t i_iocount; /* outstanding I/O count */ 241 /* Trace buffers per inode. */ 242 #ifdef XFS_INODE_TRACE 243 struct ktrace *i_trace; /* general inode trace */ 244 #endif 245 #ifdef XFS_BMAP_TRACE 246 struct ktrace *i_xtrace; /* inode extent list trace */ 247 #endif 248 #ifdef XFS_BMBT_TRACE 249 struct ktrace *i_btrace; /* inode bmap btree trace */ 250 #endif 251 #ifdef XFS_RW_TRACE 252 struct ktrace *i_rwtrace; /* inode read/write trace */ 253 #endif 254 #ifdef XFS_ILOCK_TRACE 255 struct ktrace *i_lock_trace; /* inode lock/unlock trace */ 256 #endif 257 #ifdef XFS_DIR2_TRACE 258 struct ktrace *i_dir_trace; /* inode directory trace */ 259 #endif 260 } xfs_inode_t; 261 262 #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ 263 (ip)->i_size : (ip)->i_d.di_size; 264 265 /* Convert from vfs inode to xfs inode */ 266 static inline struct xfs_inode *XFS_I(struct inode *inode) 267 { 268 return (struct xfs_inode *)inode->i_private; 269 } 270 271 /* convert from xfs inode to vfs inode */ 272 static inline struct inode *VFS_I(struct xfs_inode *ip) 273 { 274 return (struct inode *)ip->i_vnode; 275 } 276 277 /* 278 * i_flags helper functions 279 */ 280 static inline void 281 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 282 { 283 ip->i_flags |= flags; 284 } 285 286 static inline void 287 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 288 { 289 spin_lock(&ip->i_flags_lock); 290 __xfs_iflags_set(ip, flags); 291 spin_unlock(&ip->i_flags_lock); 292 } 293 294 static inline void 295 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 296 { 297 spin_lock(&ip->i_flags_lock); 298 ip->i_flags &= ~flags; 299 spin_unlock(&ip->i_flags_lock); 300 } 301 302 static inline int 303 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 304 { 305 return (ip->i_flags & flags); 306 } 307 308 static inline int 309 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 310 { 311 int ret; 312 spin_lock(&ip->i_flags_lock); 313 ret = __xfs_iflags_test(ip, flags); 314 spin_unlock(&ip->i_flags_lock); 315 return ret; 316 } 317 318 static inline int 319 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) 320 { 321 int ret; 322 323 spin_lock(&ip->i_flags_lock); 324 ret = ip->i_flags & flags; 325 if (ret) 326 ip->i_flags &= ~flags; 327 spin_unlock(&ip->i_flags_lock); 328 return ret; 329 } 330 #endif /* __KERNEL__ */ 331 332 333 /* 334 * Fork handling. 335 */ 336 337 #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) 338 #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) 339 340 #define XFS_IFORK_PTR(ip,w) \ 341 ((w) == XFS_DATA_FORK ? \ 342 &(ip)->i_df : \ 343 (ip)->i_afp) 344 #define XFS_IFORK_DSIZE(ip) \ 345 (XFS_IFORK_Q(ip) ? \ 346 XFS_IFORK_BOFF(ip) : \ 347 XFS_LITINO((ip)->i_mount)) 348 #define XFS_IFORK_ASIZE(ip) \ 349 (XFS_IFORK_Q(ip) ? \ 350 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ 351 0) 352 #define XFS_IFORK_SIZE(ip,w) \ 353 ((w) == XFS_DATA_FORK ? \ 354 XFS_IFORK_DSIZE(ip) : \ 355 XFS_IFORK_ASIZE(ip)) 356 #define XFS_IFORK_FORMAT(ip,w) \ 357 ((w) == XFS_DATA_FORK ? \ 358 (ip)->i_d.di_format : \ 359 (ip)->i_d.di_aformat) 360 #define XFS_IFORK_FMT_SET(ip,w,n) \ 361 ((w) == XFS_DATA_FORK ? \ 362 ((ip)->i_d.di_format = (n)) : \ 363 ((ip)->i_d.di_aformat = (n))) 364 #define XFS_IFORK_NEXTENTS(ip,w) \ 365 ((w) == XFS_DATA_FORK ? \ 366 (ip)->i_d.di_nextents : \ 367 (ip)->i_d.di_anextents) 368 #define XFS_IFORK_NEXT_SET(ip,w,n) \ 369 ((w) == XFS_DATA_FORK ? \ 370 ((ip)->i_d.di_nextents = (n)) : \ 371 ((ip)->i_d.di_anextents = (n))) 372 373 #ifdef __KERNEL__ 374 375 /* 376 * In-core inode flags. 377 */ 378 #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ 379 #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ 380 #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ 381 #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ 382 #define XFS_ISTALE 0x0010 /* inode has been staled */ 383 #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ 384 #define XFS_INEW 0x0040 385 #define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */ 386 #define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */ 387 /* to the Linux inode state. */ 388 #define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */ 389 390 /* 391 * Flags for inode locking. 392 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 393 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 394 */ 395 #define XFS_IOLOCK_EXCL (1<<0) 396 #define XFS_IOLOCK_SHARED (1<<1) 397 #define XFS_ILOCK_EXCL (1<<2) 398 #define XFS_ILOCK_SHARED (1<<3) 399 #define XFS_IUNLOCK_NONOTIFY (1<<4) 400 401 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 402 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) 403 404 /* 405 * Flags for lockdep annotations. 406 * 407 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes 408 * (ie directory operations that require locking a directory inode and 409 * an entry inode). The first inode gets locked with this flag so it 410 * gets a lockdep subclass of 1 and the second lock will have a lockdep 411 * subclass of 0. 412 * 413 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 414 * with xfs_lock_inodes(). This flag is used as the starting subclass 415 * and each subsequent lock acquired will increment the subclass by one. 416 * So the first lock acquired will have a lockdep subclass of 2, the 417 * second lock will have a lockdep subclass of 3, and so on. It is 418 * the responsibility of the class builder to shift this to the correct 419 * portion of the lock_mode lockdep mask. 420 */ 421 #define XFS_LOCK_PARENT 1 422 #define XFS_LOCK_INUMORDER 2 423 424 #define XFS_IOLOCK_SHIFT 16 425 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) 426 427 #define XFS_ILOCK_SHIFT 24 428 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) 429 430 #define XFS_IOLOCK_DEP_MASK 0x00ff0000 431 #define XFS_ILOCK_DEP_MASK 0xff000000 432 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) 433 434 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) 435 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) 436 437 /* 438 * Flags for xfs_iflush() 439 */ 440 #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 441 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 442 #define XFS_IFLUSH_SYNC 3 443 #define XFS_IFLUSH_ASYNC 4 444 #define XFS_IFLUSH_DELWRI 5 445 #define XFS_IFLUSH_ASYNC_NOBLOCK 6 446 447 /* 448 * Flags for xfs_itruncate_start(). 449 */ 450 #define XFS_ITRUNC_DEFINITE 0x1 451 #define XFS_ITRUNC_MAYBE 0x2 452 453 /* 454 * For multiple groups support: if S_ISGID bit is set in the parent 455 * directory, group of new file is set to that of the parent, and 456 * new subdirectory gets S_ISGID bit from parent. 457 */ 458 #define XFS_INHERIT_GID(pip) \ 459 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ 460 ((pip)->i_d.di_mode & S_ISGID)) 461 462 /* 463 * Flags for xfs_iget() 464 */ 465 #define XFS_IGET_CREATE 0x1 466 #define XFS_IGET_BULKSTAT 0x2 467 468 /* 469 * xfs_iget.c prototypes. 470 */ 471 void xfs_ihash_init(struct xfs_mount *); 472 void xfs_ihash_free(struct xfs_mount *); 473 xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, 474 struct xfs_trans *); 475 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 476 uint, uint, xfs_inode_t **, xfs_daddr_t); 477 void xfs_iput(xfs_inode_t *, uint); 478 void xfs_iput_new(xfs_inode_t *, uint); 479 void xfs_ilock(xfs_inode_t *, uint); 480 int xfs_ilock_nowait(xfs_inode_t *, uint); 481 void xfs_iunlock(xfs_inode_t *, uint); 482 void xfs_ilock_demote(xfs_inode_t *, uint); 483 int xfs_isilocked(xfs_inode_t *, uint); 484 uint xfs_ilock_map_shared(xfs_inode_t *); 485 void xfs_iunlock_map_shared(xfs_inode_t *, uint); 486 void xfs_ireclaim(xfs_inode_t *); 487 int xfs_finish_reclaim(xfs_inode_t *, int, int); 488 int xfs_finish_reclaim_all(struct xfs_mount *, int); 489 490 /* 491 * xfs_inode.c prototypes. 492 */ 493 int xfs_itobp(struct xfs_mount *, struct xfs_trans *, 494 xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **, 495 xfs_daddr_t, uint, uint); 496 int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 497 xfs_inode_t **, xfs_daddr_t, uint); 498 int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); 499 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, 500 xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, 501 int, struct xfs_buf **, boolean_t *, xfs_inode_t **); 502 void xfs_dinode_from_disk(struct xfs_icdinode *, 503 struct xfs_dinode_core *); 504 void xfs_dinode_to_disk(struct xfs_dinode_core *, 505 struct xfs_icdinode *); 506 507 uint xfs_ip2xflags(struct xfs_inode *); 508 uint xfs_dic2xflags(struct xfs_dinode *); 509 int xfs_ifree(struct xfs_trans *, xfs_inode_t *, 510 struct xfs_bmap_free *); 511 int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); 512 int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, 513 xfs_fsize_t, int, int); 514 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); 515 516 void xfs_idestroy_fork(xfs_inode_t *, int); 517 void xfs_idestroy(xfs_inode_t *); 518 void xfs_idata_realloc(xfs_inode_t *, int, int); 519 void xfs_iextract(xfs_inode_t *); 520 void xfs_iext_realloc(xfs_inode_t *, int, int); 521 void xfs_iroot_realloc(xfs_inode_t *, int, int); 522 void xfs_ipin(xfs_inode_t *); 523 void xfs_iunpin(xfs_inode_t *); 524 int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); 525 int xfs_iflush(xfs_inode_t *, uint); 526 void xfs_iflush_all(struct xfs_mount *); 527 void xfs_ichgtime(xfs_inode_t *, int); 528 xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); 529 void xfs_lock_inodes(xfs_inode_t **, int, uint); 530 void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); 531 532 void xfs_synchronize_atime(xfs_inode_t *); 533 void xfs_mark_inode_dirty_sync(xfs_inode_t *); 534 535 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); 536 void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, 537 xfs_bmbt_irec_t *); 538 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); 539 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); 540 void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); 541 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); 542 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); 543 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); 544 void xfs_iext_realloc_direct(xfs_ifork_t *, int); 545 void xfs_iext_realloc_indirect(xfs_ifork_t *, int); 546 void xfs_iext_indirect_to_direct(xfs_ifork_t *); 547 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); 548 void xfs_iext_inline_to_direct(xfs_ifork_t *, int); 549 void xfs_iext_destroy(xfs_ifork_t *); 550 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); 551 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); 552 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); 553 void xfs_iext_irec_init(xfs_ifork_t *); 554 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); 555 void xfs_iext_irec_remove(xfs_ifork_t *, int); 556 void xfs_iext_irec_compact(xfs_ifork_t *); 557 void xfs_iext_irec_compact_pages(xfs_ifork_t *); 558 void xfs_iext_irec_compact_full(xfs_ifork_t *); 559 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); 560 561 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 562 563 #ifdef DEBUG 564 void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t); 565 #else /* DEBUG */ 566 #define xfs_isize_check(mp, ip, isize) 567 #endif /* DEBUG */ 568 569 #if defined(DEBUG) 570 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); 571 #else 572 #define xfs_inobp_check(mp, bp) 573 #endif /* DEBUG */ 574 575 extern struct kmem_zone *xfs_ifork_zone; 576 extern struct kmem_zone *xfs_inode_zone; 577 extern struct kmem_zone *xfs_ili_zone; 578 579 /* 580 * Manage the i_flush queue embedded in the inode. This completion 581 * queue synchronizes processes attempting to flush the in-core 582 * inode back to disk. 583 */ 584 static inline void xfs_iflock(xfs_inode_t *ip) 585 { 586 wait_for_completion(&ip->i_flush); 587 } 588 589 static inline int xfs_iflock_nowait(xfs_inode_t *ip) 590 { 591 return try_wait_for_completion(&ip->i_flush); 592 } 593 594 static inline void xfs_ifunlock(xfs_inode_t *ip) 595 { 596 complete(&ip->i_flush); 597 } 598 599 #endif /* __KERNEL__ */ 600 601 #endif /* __XFS_INODE_H__ */ 602