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_inode; 23 24 /* 25 * Fork identifiers. 26 */ 27 #define XFS_DATA_FORK 0 28 #define XFS_ATTR_FORK 1 29 30 /* 31 * The following xfs_ext_irec_t struct introduces a second (top) level 32 * to the in-core extent allocation scheme. These structs are allocated 33 * in a contiguous block, creating an indirection array where each entry 34 * (irec) contains a pointer to a buffer of in-core extent records which 35 * it manages. Each extent buffer is 4k in size, since 4k is the system 36 * page size on Linux i386 and systems with larger page sizes don't seem 37 * to gain much, if anything, by using their native page size as the 38 * extent buffer size. Also, using 4k extent buffers everywhere provides 39 * a consistent interface for CXFS across different platforms. 40 * 41 * There is currently no limit on the number of irec's (extent lists) 42 * allowed, so heavily fragmented files may require an indirection array 43 * which spans multiple system pages of memory. The number of extents 44 * which would require this amount of contiguous memory is very large 45 * and should not cause problems in the foreseeable future. However, 46 * if the memory needed for the contiguous array ever becomes a problem, 47 * it is possible that a third level of indirection may be required. 48 */ 49 typedef struct xfs_ext_irec { 50 xfs_bmbt_rec_host_t *er_extbuf; /* block of extent records */ 51 xfs_extnum_t er_extoff; /* extent offset in file */ 52 xfs_extnum_t er_extcount; /* number of extents in page/block */ 53 } xfs_ext_irec_t; 54 55 /* 56 * File incore extent information, present for each of data & attr forks. 57 */ 58 #define XFS_IEXT_BUFSZ 4096 59 #define XFS_LINEAR_EXTS (XFS_IEXT_BUFSZ / (uint)sizeof(xfs_bmbt_rec_t)) 60 #define XFS_INLINE_EXTS 2 61 #define XFS_INLINE_DATA 32 62 typedef struct xfs_ifork { 63 int if_bytes; /* bytes in if_u1 */ 64 int if_real_bytes; /* bytes allocated in if_u1 */ 65 struct xfs_btree_block *if_broot; /* file's incore btree root */ 66 short if_broot_bytes; /* bytes allocated for root */ 67 unsigned char if_flags; /* per-fork flags */ 68 unsigned char if_ext_max; /* max # of extent records */ 69 xfs_extnum_t if_lastex; /* last if_extents used */ 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 upto 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 endianess 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; /* owner's project id */ 137 __uint8_t di_pad[8]; /* unused, zeroed space */ 138 __uint16_t di_flushiter; /* incremented on flush */ 139 xfs_ictimestamp_t di_atime; /* time last accessed */ 140 xfs_ictimestamp_t di_mtime; /* time last modified */ 141 xfs_ictimestamp_t di_ctime; /* time created/inode modified */ 142 xfs_fsize_t di_size; /* number of bytes in file */ 143 xfs_drfsbno_t di_nblocks; /* # of direct & btree blocks used */ 144 xfs_extlen_t di_extsize; /* basic/minimum extent size for file */ 145 xfs_extnum_t di_nextents; /* number of extents in data fork */ 146 xfs_aextnum_t di_anextents; /* number of extents in attribute fork*/ 147 __uint8_t di_forkoff; /* attr fork offs, <<3 for 64b align */ 148 __int8_t di_aformat; /* format of attr fork's data */ 149 __uint32_t di_dmevmask; /* DMIG event mask */ 150 __uint16_t di_dmstate; /* DMIG state info */ 151 __uint16_t di_flags; /* random flags, XFS_DIFLAG_... */ 152 __uint32_t di_gen; /* generation number */ 153 } xfs_icdinode_t; 154 155 /* 156 * Flags for xfs_ichgtime(). 157 */ 158 #define XFS_ICHGTIME_MOD 0x1 /* data fork modification timestamp */ 159 #define XFS_ICHGTIME_CHG 0x2 /* inode field change timestamp */ 160 161 /* 162 * Per-fork incore inode flags. 163 */ 164 #define XFS_IFINLINE 0x01 /* Inline data is read in */ 165 #define XFS_IFEXTENTS 0x02 /* All extent pointers are read in */ 166 #define XFS_IFBROOT 0x04 /* i_broot points to the bmap b-tree root */ 167 #define XFS_IFEXTIREC 0x08 /* Indirection array of extent blocks */ 168 169 /* 170 * Fork handling. 171 */ 172 173 #define XFS_IFORK_Q(ip) ((ip)->i_d.di_forkoff != 0) 174 #define XFS_IFORK_BOFF(ip) ((int)((ip)->i_d.di_forkoff << 3)) 175 176 #define XFS_IFORK_PTR(ip,w) \ 177 ((w) == XFS_DATA_FORK ? \ 178 &(ip)->i_df : \ 179 (ip)->i_afp) 180 #define XFS_IFORK_DSIZE(ip) \ 181 (XFS_IFORK_Q(ip) ? \ 182 XFS_IFORK_BOFF(ip) : \ 183 XFS_LITINO((ip)->i_mount)) 184 #define XFS_IFORK_ASIZE(ip) \ 185 (XFS_IFORK_Q(ip) ? \ 186 XFS_LITINO((ip)->i_mount) - XFS_IFORK_BOFF(ip) : \ 187 0) 188 #define XFS_IFORK_SIZE(ip,w) \ 189 ((w) == XFS_DATA_FORK ? \ 190 XFS_IFORK_DSIZE(ip) : \ 191 XFS_IFORK_ASIZE(ip)) 192 #define XFS_IFORK_FORMAT(ip,w) \ 193 ((w) == XFS_DATA_FORK ? \ 194 (ip)->i_d.di_format : \ 195 (ip)->i_d.di_aformat) 196 #define XFS_IFORK_FMT_SET(ip,w,n) \ 197 ((w) == XFS_DATA_FORK ? \ 198 ((ip)->i_d.di_format = (n)) : \ 199 ((ip)->i_d.di_aformat = (n))) 200 #define XFS_IFORK_NEXTENTS(ip,w) \ 201 ((w) == XFS_DATA_FORK ? \ 202 (ip)->i_d.di_nextents : \ 203 (ip)->i_d.di_anextents) 204 #define XFS_IFORK_NEXT_SET(ip,w,n) \ 205 ((w) == XFS_DATA_FORK ? \ 206 ((ip)->i_d.di_nextents = (n)) : \ 207 ((ip)->i_d.di_anextents = (n))) 208 209 210 211 #ifdef __KERNEL__ 212 213 struct bhv_desc; 214 struct cred; 215 struct ktrace; 216 struct xfs_buf; 217 struct xfs_bmap_free; 218 struct xfs_bmbt_irec; 219 struct xfs_inode_log_item; 220 struct xfs_mount; 221 struct xfs_trans; 222 struct xfs_dquot; 223 224 #if defined(XFS_ILOCK_TRACE) 225 #define XFS_ILOCK_KTRACE_SIZE 32 226 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); 227 #else 228 #define xfs_ilock_trace(i,n,f,ra) 229 #endif 230 231 typedef struct dm_attrs_s { 232 __uint32_t da_dmevmask; /* DMIG event mask */ 233 __uint16_t da_dmstate; /* DMIG state info */ 234 __uint16_t da_pad; /* DMIG extra padding */ 235 } dm_attrs_t; 236 237 typedef struct xfs_inode { 238 /* Inode linking and identification information. */ 239 struct xfs_mount *i_mount; /* fs mount struct ptr */ 240 struct xfs_dquot *i_udquot; /* user dquot */ 241 struct xfs_dquot *i_gdquot; /* group dquot */ 242 243 /* Inode location stuff */ 244 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 245 struct xfs_imap i_imap; /* location for xfs_imap() */ 246 247 /* Extent information. */ 248 xfs_ifork_t *i_afp; /* attribute fork pointer */ 249 xfs_ifork_t i_df; /* data fork */ 250 251 /* Transaction and locking information. */ 252 struct xfs_trans *i_transp; /* ptr to owning transaction*/ 253 struct xfs_inode_log_item *i_itemp; /* logging information */ 254 mrlock_t i_lock; /* inode lock */ 255 mrlock_t i_iolock; /* inode IO lock */ 256 struct completion i_flush; /* inode flush completion q */ 257 atomic_t i_pincount; /* inode pin count */ 258 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ 259 spinlock_t i_flags_lock; /* inode i_flags lock */ 260 /* Miscellaneous state. */ 261 unsigned short i_flags; /* see defined flags below */ 262 unsigned char i_update_core; /* timestamps/size is dirty */ 263 unsigned char i_update_size; /* di_size field is dirty */ 264 unsigned int i_delayed_blks; /* count of delay alloc blks */ 265 266 xfs_icdinode_t i_d; /* most of ondisk inode */ 267 268 xfs_fsize_t i_size; /* in-memory size */ 269 xfs_fsize_t i_new_size; /* size when write completes */ 270 atomic_t i_iocount; /* outstanding I/O count */ 271 272 /* VFS inode */ 273 struct inode i_vnode; /* embedded VFS inode */ 274 275 /* Trace buffers per inode. */ 276 #ifdef XFS_INODE_TRACE 277 struct ktrace *i_trace; /* general inode trace */ 278 #endif 279 #ifdef XFS_BMAP_TRACE 280 struct ktrace *i_xtrace; /* inode extent list trace */ 281 #endif 282 #ifdef XFS_BTREE_TRACE 283 struct ktrace *i_btrace; /* inode bmap btree trace */ 284 #endif 285 #ifdef XFS_RW_TRACE 286 struct ktrace *i_rwtrace; /* inode read/write trace */ 287 #endif 288 #ifdef XFS_ILOCK_TRACE 289 struct ktrace *i_lock_trace; /* inode lock/unlock trace */ 290 #endif 291 #ifdef XFS_DIR2_TRACE 292 struct ktrace *i_dir_trace; /* inode directory trace */ 293 #endif 294 } xfs_inode_t; 295 296 #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ 297 (ip)->i_size : (ip)->i_d.di_size; 298 299 /* Convert from vfs inode to xfs inode */ 300 static inline struct xfs_inode *XFS_I(struct inode *inode) 301 { 302 return container_of(inode, struct xfs_inode, i_vnode); 303 } 304 305 /* convert from xfs inode to vfs inode */ 306 static inline struct inode *VFS_I(struct xfs_inode *ip) 307 { 308 return &ip->i_vnode; 309 } 310 311 /* 312 * Get rid of a partially initialized inode. 313 * 314 * We have to go through destroy_inode to make sure allocations 315 * from init_inode_always like the security data are undone. 316 * 317 * We mark the inode bad so that it takes the short cut in 318 * the reclaim path instead of going through the flush path 319 * which doesn't make sense for an inode that has never seen the 320 * light of day. 321 */ 322 static inline void xfs_destroy_inode(struct xfs_inode *ip) 323 { 324 make_bad_inode(VFS_I(ip)); 325 return destroy_inode(VFS_I(ip)); 326 } 327 328 /* 329 * i_flags helper functions 330 */ 331 static inline void 332 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 333 { 334 ip->i_flags |= flags; 335 } 336 337 static inline void 338 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 339 { 340 spin_lock(&ip->i_flags_lock); 341 __xfs_iflags_set(ip, flags); 342 spin_unlock(&ip->i_flags_lock); 343 } 344 345 static inline void 346 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 347 { 348 spin_lock(&ip->i_flags_lock); 349 ip->i_flags &= ~flags; 350 spin_unlock(&ip->i_flags_lock); 351 } 352 353 static inline int 354 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 355 { 356 return (ip->i_flags & flags); 357 } 358 359 static inline int 360 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 361 { 362 int ret; 363 spin_lock(&ip->i_flags_lock); 364 ret = __xfs_iflags_test(ip, flags); 365 spin_unlock(&ip->i_flags_lock); 366 return ret; 367 } 368 369 static inline int 370 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) 371 { 372 int ret; 373 374 spin_lock(&ip->i_flags_lock); 375 ret = ip->i_flags & flags; 376 if (ret) 377 ip->i_flags &= ~flags; 378 spin_unlock(&ip->i_flags_lock); 379 return ret; 380 } 381 382 /* 383 * Manage the i_flush queue embedded in the inode. This completion 384 * queue synchronizes processes attempting to flush the in-core 385 * inode back to disk. 386 */ 387 static inline void xfs_iflock(xfs_inode_t *ip) 388 { 389 wait_for_completion(&ip->i_flush); 390 } 391 392 static inline int xfs_iflock_nowait(xfs_inode_t *ip) 393 { 394 return try_wait_for_completion(&ip->i_flush); 395 } 396 397 static inline void xfs_ifunlock(xfs_inode_t *ip) 398 { 399 complete(&ip->i_flush); 400 } 401 402 /* 403 * In-core inode flags. 404 */ 405 #define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */ 406 #define XFS_ISTALE 0x0002 /* inode has been staled */ 407 #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */ 408 #define XFS_INEW 0x0008 /* inode has just been allocated */ 409 #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */ 410 #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */ 411 412 /* 413 * Flags for inode locking. 414 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 415 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 416 */ 417 #define XFS_IOLOCK_EXCL (1<<0) 418 #define XFS_IOLOCK_SHARED (1<<1) 419 #define XFS_ILOCK_EXCL (1<<2) 420 #define XFS_ILOCK_SHARED (1<<3) 421 #define XFS_IUNLOCK_NONOTIFY (1<<4) 422 423 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 424 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) 425 426 /* 427 * Flags for lockdep annotations. 428 * 429 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes 430 * (ie directory operations that require locking a directory inode and 431 * an entry inode). The first inode gets locked with this flag so it 432 * gets a lockdep subclass of 1 and the second lock will have a lockdep 433 * subclass of 0. 434 * 435 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 436 * with xfs_lock_inodes(). This flag is used as the starting subclass 437 * and each subsequent lock acquired will increment the subclass by one. 438 * So the first lock acquired will have a lockdep subclass of 2, the 439 * second lock will have a lockdep subclass of 3, and so on. It is 440 * the responsibility of the class builder to shift this to the correct 441 * portion of the lock_mode lockdep mask. 442 */ 443 #define XFS_LOCK_PARENT 1 444 #define XFS_LOCK_INUMORDER 2 445 446 #define XFS_IOLOCK_SHIFT 16 447 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) 448 449 #define XFS_ILOCK_SHIFT 24 450 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) 451 452 #define XFS_IOLOCK_DEP_MASK 0x00ff0000 453 #define XFS_ILOCK_DEP_MASK 0xff000000 454 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) 455 456 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) 457 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) 458 459 /* 460 * Flags for xfs_iflush() 461 */ 462 #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 463 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 464 #define XFS_IFLUSH_SYNC 3 465 #define XFS_IFLUSH_ASYNC 4 466 #define XFS_IFLUSH_DELWRI 5 467 #define XFS_IFLUSH_ASYNC_NOBLOCK 6 468 469 /* 470 * Flags for xfs_itruncate_start(). 471 */ 472 #define XFS_ITRUNC_DEFINITE 0x1 473 #define XFS_ITRUNC_MAYBE 0x2 474 475 /* 476 * For multiple groups support: if S_ISGID bit is set in the parent 477 * directory, group of new file is set to that of the parent, and 478 * new subdirectory gets S_ISGID bit from parent. 479 */ 480 #define XFS_INHERIT_GID(pip) \ 481 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ 482 ((pip)->i_d.di_mode & S_ISGID)) 483 484 /* 485 * xfs_iget.c prototypes. 486 */ 487 xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, 488 struct xfs_trans *); 489 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 490 uint, uint, xfs_inode_t **, xfs_daddr_t); 491 void xfs_iput(xfs_inode_t *, uint); 492 void xfs_iput_new(xfs_inode_t *, uint); 493 void xfs_ilock(xfs_inode_t *, uint); 494 int xfs_ilock_nowait(xfs_inode_t *, uint); 495 void xfs_iunlock(xfs_inode_t *, uint); 496 void xfs_ilock_demote(xfs_inode_t *, uint); 497 int xfs_isilocked(xfs_inode_t *, uint); 498 uint xfs_ilock_map_shared(xfs_inode_t *); 499 void xfs_iunlock_map_shared(xfs_inode_t *, uint); 500 void xfs_ireclaim(xfs_inode_t *); 501 502 /* 503 * xfs_inode.c prototypes. 504 */ 505 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, 506 xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t, 507 int, struct xfs_buf **, boolean_t *, xfs_inode_t **); 508 509 uint xfs_ip2xflags(struct xfs_inode *); 510 uint xfs_dic2xflags(struct xfs_dinode *); 511 int xfs_ifree(struct xfs_trans *, xfs_inode_t *, 512 struct xfs_bmap_free *); 513 int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); 514 int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, 515 xfs_fsize_t, int, int); 516 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); 517 518 void xfs_iext_realloc(xfs_inode_t *, int, int); 519 void xfs_ipin(xfs_inode_t *); 520 void xfs_iunpin(xfs_inode_t *); 521 int xfs_iflush(xfs_inode_t *, uint); 522 void xfs_ichgtime(xfs_inode_t *, int); 523 xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); 524 void xfs_lock_inodes(xfs_inode_t **, int, uint); 525 void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); 526 527 void xfs_synchronize_atime(xfs_inode_t *); 528 void xfs_mark_inode_dirty_sync(xfs_inode_t *); 529 530 #if defined(XFS_INODE_TRACE) 531 532 #define INODE_TRACE_SIZE 16 /* number of trace entries */ 533 #define INODE_KTRACE_ENTRY 1 534 #define INODE_KTRACE_EXIT 2 535 #define INODE_KTRACE_HOLD 3 536 #define INODE_KTRACE_REF 4 537 #define INODE_KTRACE_RELE 5 538 539 extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *); 540 extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *); 541 extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *); 542 extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *); 543 extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *); 544 #define xfs_itrace_entry(ip) \ 545 _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address) 546 #define xfs_itrace_exit(ip) \ 547 _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address) 548 #define xfs_itrace_exit_tag(ip, tag) \ 549 _xfs_itrace_exit(ip, tag, (inst_t *)__return_address) 550 #define xfs_itrace_ref(ip) \ 551 _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address) 552 553 #else 554 #define xfs_itrace_entry(a) 555 #define xfs_itrace_exit(a) 556 #define xfs_itrace_exit_tag(a, b) 557 #define xfs_itrace_hold(a, b, c, d) 558 #define xfs_itrace_ref(a) 559 #define xfs_itrace_rele(a, b, c, d) 560 #endif 561 562 #define IHOLD(ip) \ 563 do { \ 564 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ 565 atomic_inc(&(VFS_I(ip)->i_count)); \ 566 xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ 567 } while (0) 568 569 #define IRELE(ip) \ 570 do { \ 571 xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ 572 iput(VFS_I(ip)); \ 573 } while (0) 574 575 #endif /* __KERNEL__ */ 576 577 /* 578 * Flags for xfs_iget() 579 */ 580 #define XFS_IGET_CREATE 0x1 581 #define XFS_IGET_BULKSTAT 0x2 582 583 int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, 584 xfs_ino_t, struct xfs_dinode **, 585 struct xfs_buf **, int *, uint); 586 int xfs_itobp(struct xfs_mount *, struct xfs_trans *, 587 struct xfs_inode *, struct xfs_dinode **, 588 struct xfs_buf **, uint); 589 int xfs_iread(struct xfs_mount *, struct xfs_trans *, 590 struct xfs_inode *, xfs_daddr_t, uint); 591 void xfs_dinode_from_disk(struct xfs_icdinode *, 592 struct xfs_dinode *); 593 void xfs_dinode_to_disk(struct xfs_dinode *, 594 struct xfs_icdinode *); 595 void xfs_idestroy_fork(struct xfs_inode *, int); 596 void xfs_idata_realloc(struct xfs_inode *, int, int); 597 void xfs_iroot_realloc(struct xfs_inode *, int, int); 598 int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); 599 int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); 600 601 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); 602 void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, 603 xfs_bmbt_irec_t *); 604 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); 605 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); 606 void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); 607 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); 608 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); 609 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); 610 void xfs_iext_realloc_direct(xfs_ifork_t *, int); 611 void xfs_iext_realloc_indirect(xfs_ifork_t *, int); 612 void xfs_iext_indirect_to_direct(xfs_ifork_t *); 613 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); 614 void xfs_iext_inline_to_direct(xfs_ifork_t *, int); 615 void xfs_iext_destroy(xfs_ifork_t *); 616 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); 617 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); 618 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); 619 void xfs_iext_irec_init(xfs_ifork_t *); 620 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); 621 void xfs_iext_irec_remove(xfs_ifork_t *, int); 622 void xfs_iext_irec_compact(xfs_ifork_t *); 623 void xfs_iext_irec_compact_pages(xfs_ifork_t *); 624 void xfs_iext_irec_compact_full(xfs_ifork_t *); 625 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); 626 627 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 628 629 #ifdef DEBUG 630 void xfs_isize_check(struct xfs_mount *, struct xfs_inode *, 631 xfs_fsize_t); 632 #else /* DEBUG */ 633 #define xfs_isize_check(mp, ip, isize) 634 #endif /* DEBUG */ 635 636 #if defined(DEBUG) 637 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); 638 #else 639 #define xfs_inobp_check(mp, bp) 640 #endif /* DEBUG */ 641 642 extern struct kmem_zone *xfs_ifork_zone; 643 extern struct kmem_zone *xfs_inode_zone; 644 extern struct kmem_zone *xfs_ili_zone; 645 646 #endif /* __XFS_INODE_H__ */ 647