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_ACC 0x2 /* data fork access timestamp */ 91 #define XFS_ICHGTIME_CHG 0x4 /* inode field change timestamp */ 92 93 /* 94 * Per-fork incore inode flags. 95 */ 96 #define XFS_IFINLINE 0x01 /* Inline data is read in */ 97 #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ 98 #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ 99 #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ 100 101 /* 102 * Flags for xfs_itobp(), xfs_imap() and xfs_dilocate(). 103 */ 104 #define XFS_IMAP_LOOKUP 0x1 105 #define XFS_IMAP_BULKSTAT 0x2 106 107 #ifdef __KERNEL__ 108 struct bhv_desc; 109 struct cred; 110 struct ktrace; 111 struct xfs_buf; 112 struct xfs_bmap_free; 113 struct xfs_bmbt_irec; 114 struct xfs_bmbt_block; 115 struct xfs_inode; 116 struct xfs_inode_log_item; 117 struct xfs_mount; 118 struct xfs_trans; 119 struct xfs_dquot; 120 121 #if defined(XFS_ILOCK_TRACE) 122 #define XFS_ILOCK_KTRACE_SIZE 32 123 extern ktrace_t *xfs_ilock_trace_buf; 124 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); 125 #else 126 #define xfs_ilock_trace(i,n,f,ra) 127 #endif 128 129 typedef struct dm_attrs_s { 130 __uint32_t da_dmevmask; /* DMIG event mask */ 131 __uint16_t da_dmstate; /* DMIG state info */ 132 __uint16_t da_pad; /* DMIG extra padding */ 133 } dm_attrs_t; 134 135 typedef struct xfs_iocore { 136 void *io_obj; /* pointer to container 137 * inode or dcxvn structure */ 138 struct xfs_mount *io_mount; /* fs mount struct ptr */ 139 #ifdef DEBUG 140 mrlock_t *io_lock; /* inode IO lock */ 141 mrlock_t *io_iolock; /* inode IO lock */ 142 #endif 143 144 /* I/O state */ 145 xfs_fsize_t io_new_size; /* sz when write completes */ 146 147 /* Miscellaneous state. */ 148 unsigned int io_flags; /* IO related flags */ 149 150 /* DMAPI state */ 151 dm_attrs_t io_dmattrs; 152 153 } xfs_iocore_t; 154 155 #define io_dmevmask io_dmattrs.da_dmevmask 156 #define io_dmstate io_dmattrs.da_dmstate 157 158 #define XFS_IO_INODE(io) ((xfs_inode_t *) ((io)->io_obj)) 159 #define XFS_IO_DCXVN(io) ((dcxvn_t *) ((io)->io_obj)) 160 161 /* 162 * Flags in the flags field 163 */ 164 165 #define XFS_IOCORE_RT 0x1 166 167 /* 168 * xfs_iocore prototypes 169 */ 170 171 extern void xfs_iocore_inode_init(struct xfs_inode *); 172 extern void xfs_iocore_inode_reinit(struct xfs_inode *); 173 174 /* 175 * This is the xfs inode cluster structure. This structure is used by 176 * xfs_iflush to find inodes that share a cluster and can be flushed to disk at 177 * the same time. 178 */ 179 typedef struct xfs_icluster { 180 struct hlist_head icl_inodes; /* list of inodes on cluster */ 181 xfs_daddr_t icl_blkno; /* starting block number of 182 * the cluster */ 183 struct xfs_buf *icl_buf; /* the inode buffer */ 184 lock_t icl_lock; /* inode list lock */ 185 } xfs_icluster_t; 186 187 /* 188 * This is the xfs in-core inode structure. 189 * Most of the on-disk inode is embedded in the i_d field. 190 * 191 * The extent pointers/inline file space, however, are managed 192 * separately. The memory for this information is pointed to by 193 * the if_u1 unions depending on the type of the data. 194 * This is used to linearize the array of extents for fast in-core 195 * access. This is used until the file's number of extents 196 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers 197 * are accessed through the buffer cache. 198 * 199 * Other state kept in the in-core inode is used for identification, 200 * locking, transactional updating, etc of the inode. 201 * 202 * Generally, we do not want to hold the i_rlock while holding the 203 * i_ilock. Hierarchy is i_iolock followed by i_rlock. 204 * 205 * xfs_iptr_t contains all the inode fields upto and including the 206 * i_mnext and i_mprev fields, it is used as a marker in the inode 207 * chain off the mount structure by xfs_sync calls. 208 */ 209 210 typedef struct xfs_ictimestamp { 211 __int32_t t_sec; /* timestamp seconds */ 212 __int32_t t_nsec; /* timestamp nanoseconds */ 213 } xfs_ictimestamp_t; 214 215 /* 216 * NOTE: This structure must be kept identical to struct xfs_dinode_core 217 * in xfs_dinode.h except for the endianess annotations. 218 */ 219 typedef struct xfs_icdinode { 220 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 221 __uint16_t di_mode; /* mode and type of file */ 222 __int8_t di_version; /* inode version */ 223 __int8_t di_format; /* format of di_c data */ 224 __uint16_t di_onlink; /* old number of links to file */ 225 __uint32_t di_uid; /* owner's user id */ 226 __uint32_t di_gid; /* owner's group id */ 227 __uint32_t di_nlink; /* number of links to file */ 228 __uint16_t di_projid; /* owner's project id */ 229 __uint8_t di_pad[8]; /* unused, zeroed space */ 230 __uint16_t di_flushiter; /* incremented on flush */ 231 xfs_ictimestamp_t di_atime; /* time last accessed */ 232 xfs_ictimestamp_t di_mtime; /* time last modified */ 233 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 234 xfs_fsize_t di_size; /* number of bytes in file */ 235 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ 236 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 237 xfs_extnum_t di_nextents; /* number of extents in data fork */ 238 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 239 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 240 __int8_t di_aformat; /* format of attr fork's data */ 241 __uint32_t di_dmevmask; /* DMIG event mask */ 242 __uint16_t di_dmstate; /* DMIG state info */ 243 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 244 __uint32_t di_gen; /* generation number */ 245 } xfs_icdinode_t; 246 247 typedef struct { 248 struct xfs_inode *ip_mnext; /* next inode in mount list */ 249 struct xfs_inode *ip_mprev; /* ptr to prev inode */ 250 struct xfs_mount *ip_mount; /* fs mount struct ptr */ 251 } xfs_iptr_t; 252 253 typedef struct xfs_inode { 254 /* Inode linking and identification information. */ 255 struct xfs_inode *i_mnext; /* next inode in mount list */ 256 struct xfs_inode *i_mprev; /* ptr to prev inode */ 257 struct xfs_mount *i_mount; /* fs mount struct ptr */ 258 struct list_head i_reclaim; /* reclaim list */ 259 bhv_vnode_t *i_vnode; /* vnode backpointer */ 260 struct xfs_dquot *i_udquot; /* user dquot */ 261 struct xfs_dquot *i_gdquot; /* group dquot */ 262 263 /* Inode location stuff */ 264 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 265 xfs_daddr_t i_blkno; /* blkno of inode buffer */ 266 ushort i_len; /* len of inode buffer */ 267 ushort i_boffset; /* off of inode in buffer */ 268 269 /* Extent information. */ 270 xfs_ifork_t *i_afp; /* attribute fork pointer */ 271 xfs_ifork_t i_df; /* data fork */ 272 273 /* Transaction and locking information. */ 274 struct xfs_trans *i_transp; /* ptr to owning transaction*/ 275 struct xfs_inode_log_item *i_itemp; /* logging information */ 276 mrlock_t i_lock; /* inode lock */ 277 mrlock_t i_iolock; /* inode IO lock */ 278 sema_t i_flock; /* inode flush lock */ 279 atomic_t i_pincount; /* inode pin count */ 280 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ 281 spinlock_t i_flags_lock; /* inode i_flags lock */ 282 #ifdef HAVE_REFCACHE 283 struct xfs_inode **i_refcache; /* ptr to entry in ref cache */ 284 struct xfs_inode *i_release; /* inode to unref */ 285 #endif 286 /* I/O state */ 287 xfs_iocore_t i_iocore; /* I/O core */ 288 289 /* Miscellaneous state. */ 290 unsigned short i_flags; /* see defined flags below */ 291 unsigned char i_update_core; /* timestamps/size is dirty */ 292 unsigned char i_update_size; /* di_size field is dirty */ 293 unsigned int i_gen; /* generation count */ 294 unsigned int i_delayed_blks; /* count of delay alloc blks */ 295 296 xfs_icdinode_t i_d; /* most of ondisk inode */ 297 xfs_icluster_t *i_cluster; /* cluster list header */ 298 struct hlist_node i_cnode; /* cluster link node */ 299 300 xfs_fsize_t i_size; /* in-memory size */ 301 atomic_t i_iocount; /* outstanding I/O count */ 302 /* Trace buffers per inode. */ 303 #ifdef XFS_VNODE_TRACE 304 struct ktrace *i_trace; /* general inode trace */ 305 #endif 306 #ifdef XFS_BMAP_TRACE 307 struct ktrace *i_xtrace; /* inode extent list trace */ 308 #endif 309 #ifdef XFS_BMBT_TRACE 310 struct ktrace *i_btrace; /* inode bmap btree trace */ 311 #endif 312 #ifdef XFS_RW_TRACE 313 struct ktrace *i_rwtrace; /* inode read/write trace */ 314 #endif 315 #ifdef XFS_ILOCK_TRACE 316 struct ktrace *i_lock_trace; /* inode lock/unlock trace */ 317 #endif 318 #ifdef XFS_DIR2_TRACE 319 struct ktrace *i_dir_trace; /* inode directory trace */ 320 #endif 321 } xfs_inode_t; 322 323 #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ 324 (ip)->i_size : (ip)->i_d.di_size; 325 326 /* 327 * i_flags helper functions 328 */ 329 static inline void 330 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 331 { 332 ip->i_flags |= flags; 333 } 334 335 static inline void 336 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 337 { 338 spin_lock(&ip->i_flags_lock); 339 __xfs_iflags_set(ip, flags); 340 spin_unlock(&ip->i_flags_lock); 341 } 342 343 static inline void 344 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 345 { 346 spin_lock(&ip->i_flags_lock); 347 ip->i_flags &= ~flags; 348 spin_unlock(&ip->i_flags_lock); 349 } 350 351 static inline int 352 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 353 { 354 return (ip->i_flags & flags); 355 } 356 357 static inline int 358 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 359 { 360 int ret; 361 spin_lock(&ip->i_flags_lock); 362 ret = __xfs_iflags_test(ip, flags); 363 spin_unlock(&ip->i_flags_lock); 364 return ret; 365 } 366 367 static inline int 368 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) 369 { 370 int ret; 371 372 spin_lock(&ip->i_flags_lock); 373 ret = ip->i_flags & flags; 374 if (ret) 375 ip->i_flags &= ~flags; 376 spin_unlock(&ip->i_flags_lock); 377 return ret; 378 } 379 #endif /* __KERNEL__ */ 380 381 382 /* 383 * Fork handling. 384 */ 385 #define XFS_IFORK_PTR(ip,w) \ 386 ((w) == XFS_DATA_FORK ? &(ip)->i_df : (ip)->i_afp) 387 #define XFS_IFORK_Q(ip) XFS_CFORK_Q(&(ip)->i_d) 388 #define XFS_IFORK_DSIZE(ip) XFS_CFORK_DSIZE(&ip->i_d, ip->i_mount) 389 #define XFS_IFORK_ASIZE(ip) XFS_CFORK_ASIZE(&ip->i_d, ip->i_mount) 390 #define XFS_IFORK_SIZE(ip,w) XFS_CFORK_SIZE(&ip->i_d, ip->i_mount, w) 391 #define XFS_IFORK_FORMAT(ip,w) XFS_CFORK_FORMAT(&ip->i_d, w) 392 #define XFS_IFORK_FMT_SET(ip,w,n) XFS_CFORK_FMT_SET(&ip->i_d, w, n) 393 #define XFS_IFORK_NEXTENTS(ip,w) XFS_CFORK_NEXTENTS(&ip->i_d, w) 394 #define XFS_IFORK_NEXT_SET(ip,w,n) XFS_CFORK_NEXT_SET(&ip->i_d, w, n) 395 396 397 #ifdef __KERNEL__ 398 399 /* 400 * In-core inode flags. 401 */ 402 #define XFS_IGRIO 0x0001 /* inode used for guaranteed rate i/o */ 403 #define XFS_IUIOSZ 0x0002 /* inode i/o sizes have been explicitly set */ 404 #define XFS_IQUIESCE 0x0004 /* we have started quiescing for this inode */ 405 #define XFS_IRECLAIM 0x0008 /* we have started reclaiming this inode */ 406 #define XFS_ISTALE 0x0010 /* inode has been staled */ 407 #define XFS_IRECLAIMABLE 0x0020 /* inode can be reclaimed */ 408 #define XFS_INEW 0x0040 409 #define XFS_IFILESTREAM 0x0080 /* inode is in a filestream directory */ 410 #define XFS_IMODIFIED 0x0100 /* XFS inode state possibly differs */ 411 /* to the Linux inode state. */ 412 #define XFS_ITRUNCATED 0x0200 /* truncated down so flush-on-close */ 413 414 /* 415 * Flags for inode locking. 416 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 417 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 418 */ 419 #define XFS_IOLOCK_EXCL (1<<0) 420 #define XFS_IOLOCK_SHARED (1<<1) 421 #define XFS_ILOCK_EXCL (1<<2) 422 #define XFS_ILOCK_SHARED (1<<3) 423 #define XFS_IUNLOCK_NONOTIFY (1<<4) 424 /* #define XFS_IOLOCK_NESTED (1<<5) */ 425 #define XFS_EXTENT_TOKEN_RD (1<<6) 426 #define XFS_SIZE_TOKEN_RD (1<<7) 427 #define XFS_EXTSIZE_RD (XFS_EXTENT_TOKEN_RD|XFS_SIZE_TOKEN_RD) 428 #define XFS_WILLLEND (1<<8) /* Always acquire tokens for lending */ 429 #define XFS_EXTENT_TOKEN_WR (XFS_EXTENT_TOKEN_RD | XFS_WILLLEND) 430 #define XFS_SIZE_TOKEN_WR (XFS_SIZE_TOKEN_RD | XFS_WILLLEND) 431 #define XFS_EXTSIZE_WR (XFS_EXTSIZE_RD | XFS_WILLLEND) 432 /* TODO:XFS_SIZE_TOKEN_WANT (1<<9) */ 433 434 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 435 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ 436 | XFS_EXTENT_TOKEN_RD | XFS_SIZE_TOKEN_RD \ 437 | XFS_WILLLEND) 438 439 /* 440 * Flags for lockdep annotations. 441 * 442 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes 443 * (ie directory operations that require locking a directory inode and 444 * an entry inode). The first inode gets locked with this flag so it 445 * gets a lockdep subclass of 1 and the second lock will have a lockdep 446 * subclass of 0. 447 * 448 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 449 * with xfs_lock_inodes(). This flag is used as the starting subclass 450 * and each subsequent lock acquired will increment the subclass by one. 451 * So the first lock acquired will have a lockdep subclass of 2, the 452 * second lock will have a lockdep subclass of 3, and so on. It is 453 * the responsibility of the class builder to shift this to the correct 454 * portion of the lock_mode lockdep mask. 455 */ 456 #define XFS_LOCK_PARENT 1 457 #define XFS_LOCK_INUMORDER 2 458 459 #define XFS_IOLOCK_SHIFT 16 460 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) 461 462 #define XFS_ILOCK_SHIFT 24 463 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) 464 465 #define XFS_IOLOCK_DEP_MASK 0x00ff0000 466 #define XFS_ILOCK_DEP_MASK 0xff000000 467 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) 468 469 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) 470 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) 471 472 /* 473 * Flags for xfs_iflush() 474 */ 475 #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 476 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 477 #define XFS_IFLUSH_SYNC 3 478 #define XFS_IFLUSH_ASYNC 4 479 #define XFS_IFLUSH_DELWRI 5 480 481 /* 482 * Flags for xfs_itruncate_start(). 483 */ 484 #define XFS_ITRUNC_DEFINITE 0x1 485 #define XFS_ITRUNC_MAYBE 0x2 486 487 #define XFS_ITOV(ip) ((ip)->i_vnode) 488 #define XFS_ITOV_NULL(ip) ((ip)->i_vnode) 489 490 /* 491 * For multiple groups support: if S_ISGID bit is set in the parent 492 * directory, group of new file is set to that of the parent, and 493 * new subdirectory gets S_ISGID bit from parent. 494 */ 495 #define XFS_INHERIT_GID(pip) \ 496 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ 497 ((pip)->i_d.di_mode & S_ISGID)) 498 499 /* 500 * Flags for xfs_iget() 501 */ 502 #define XFS_IGET_CREATE 0x1 503 #define XFS_IGET_BULKSTAT 0x2 504 505 /* 506 * xfs_iget.c prototypes. 507 */ 508 void xfs_ihash_init(struct xfs_mount *); 509 void xfs_ihash_free(struct xfs_mount *); 510 xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, 511 struct xfs_trans *); 512 void xfs_inode_lock_init(xfs_inode_t *, bhv_vnode_t *); 513 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 514 uint, uint, xfs_inode_t **, xfs_daddr_t); 515 void xfs_iput(xfs_inode_t *, uint); 516 void xfs_iput_new(xfs_inode_t *, uint); 517 void xfs_ilock(xfs_inode_t *, uint); 518 int xfs_ilock_nowait(xfs_inode_t *, uint); 519 void xfs_iunlock(xfs_inode_t *, uint); 520 void xfs_ilock_demote(xfs_inode_t *, uint); 521 void xfs_iflock(xfs_inode_t *); 522 int xfs_iflock_nowait(xfs_inode_t *); 523 uint xfs_ilock_map_shared(xfs_inode_t *); 524 void xfs_iunlock_map_shared(xfs_inode_t *, uint); 525 void xfs_ifunlock(xfs_inode_t *); 526 void xfs_ireclaim(xfs_inode_t *); 527 int xfs_finish_reclaim(xfs_inode_t *, int, int); 528 int xfs_finish_reclaim_all(struct xfs_mount *, int); 529 530 /* 531 * xfs_inode.c prototypes. 532 */ 533 int xfs_itobp(struct xfs_mount *, struct xfs_trans *, 534 xfs_inode_t *, struct xfs_dinode **, struct xfs_buf **, 535 xfs_daddr_t, uint); 536 int xfs_iread(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 537 xfs_inode_t **, xfs_daddr_t, uint); 538 int xfs_iread_extents(struct xfs_trans *, xfs_inode_t *, int); 539 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, 540 xfs_nlink_t, xfs_dev_t, struct cred *, xfs_prid_t, 541 int, struct xfs_buf **, boolean_t *, xfs_inode_t **); 542 void xfs_dinode_from_disk(struct xfs_icdinode *, 543 struct xfs_dinode_core *); 544 void xfs_dinode_to_disk(struct xfs_dinode_core *, 545 struct xfs_icdinode *); 546 547 uint xfs_ip2xflags(struct xfs_inode *); 548 uint xfs_dic2xflags(struct xfs_dinode_core *); 549 int xfs_ifree(struct xfs_trans *, xfs_inode_t *, 550 struct xfs_bmap_free *); 551 int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); 552 int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, 553 xfs_fsize_t, int, int); 554 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); 555 int xfs_igrow_start(xfs_inode_t *, xfs_fsize_t, struct cred *); 556 void xfs_igrow_finish(struct xfs_trans *, xfs_inode_t *, 557 xfs_fsize_t, int); 558 559 void xfs_idestroy_fork(xfs_inode_t *, int); 560 void xfs_idestroy(xfs_inode_t *); 561 void xfs_idata_realloc(xfs_inode_t *, int, int); 562 void xfs_iextract(xfs_inode_t *); 563 void xfs_iext_realloc(xfs_inode_t *, int, int); 564 void xfs_iroot_realloc(xfs_inode_t *, int, int); 565 void xfs_ipin(xfs_inode_t *); 566 void xfs_iunpin(xfs_inode_t *); 567 int xfs_iextents_copy(xfs_inode_t *, xfs_bmbt_rec_t *, int); 568 int xfs_iflush(xfs_inode_t *, uint); 569 void xfs_iflush_all(struct xfs_mount *); 570 int xfs_iaccess(xfs_inode_t *, mode_t, cred_t *); 571 uint xfs_iroundup(uint); 572 void xfs_ichgtime(xfs_inode_t *, int); 573 xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); 574 void xfs_lock_inodes(xfs_inode_t **, int, int, uint); 575 576 void xfs_synchronize_atime(xfs_inode_t *); 577 578 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); 579 void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, 580 xfs_bmbt_irec_t *); 581 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); 582 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); 583 void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); 584 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); 585 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); 586 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); 587 void xfs_iext_realloc_direct(xfs_ifork_t *, int); 588 void xfs_iext_realloc_indirect(xfs_ifork_t *, int); 589 void xfs_iext_indirect_to_direct(xfs_ifork_t *); 590 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); 591 void xfs_iext_inline_to_direct(xfs_ifork_t *, int); 592 void xfs_iext_destroy(xfs_ifork_t *); 593 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); 594 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); 595 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); 596 void xfs_iext_irec_init(xfs_ifork_t *); 597 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); 598 void xfs_iext_irec_remove(xfs_ifork_t *, int); 599 void xfs_iext_irec_compact(xfs_ifork_t *); 600 void xfs_iext_irec_compact_pages(xfs_ifork_t *); 601 void xfs_iext_irec_compact_full(xfs_ifork_t *); 602 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); 603 604 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 605 606 #ifdef DEBUG 607 void xfs_isize_check(struct xfs_mount *, xfs_inode_t *, xfs_fsize_t); 608 #else /* DEBUG */ 609 #define xfs_isize_check(mp, ip, isize) 610 #endif /* DEBUG */ 611 612 #if defined(DEBUG) 613 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); 614 #else 615 #define xfs_inobp_check(mp, bp) 616 #endif /* DEBUG */ 617 618 extern struct kmem_zone *xfs_icluster_zone; 619 extern struct kmem_zone *xfs_ifork_zone; 620 extern struct kmem_zone *xfs_inode_zone; 621 extern struct kmem_zone *xfs_ili_zone; 622 623 #endif /* __KERNEL__ */ 624 625 #endif /* __XFS_INODE_H__ */ 626