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 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 * Inode location information. Stored in the inode and passed to 88 * xfs_imap_to_bp() to get a buffer and dinode for a given inode. 89 */ 90 struct xfs_imap { 91 xfs_daddr_t im_blkno; /* starting BB of inode chunk */ 92 ushort im_len; /* length in BBs of inode chunk */ 93 ushort im_boffset; /* inode offset in block in bytes */ 94 }; 95 96 /* 97 * This is the xfs in-core inode structure. 98 * Most of the on-disk inode is embedded in the i_d field. 99 * 100 * The extent pointers/inline file space, however, are managed 101 * separately. The memory for this information is pointed to by 102 * the if_u1 unions depending on the type of the data. 103 * This is used to linearize the array of extents for fast in-core 104 * access. This is used until the file's number of extents 105 * surpasses XFS_MAX_INCORE_EXTENTS, at which point all extent pointers 106 * are accessed through the buffer cache. 107 * 108 * Other state kept in the in-core inode is used for identification, 109 * locking, transactional updating, etc of the inode. 110 * 111 * Generally, we do not want to hold the i_rlock while holding the 112 * i_ilock. Hierarchy is i_iolock followed by i_rlock. 113 * 114 * xfs_iptr_t contains all the inode fields upto and including the 115 * i_mnext and i_mprev fields, it is used as a marker in the inode 116 * chain off the mount structure by xfs_sync calls. 117 */ 118 119 typedef struct xfs_ictimestamp { 120 __int32_t t_sec; /* timestamp seconds */ 121 __int32_t t_nsec; /* timestamp nanoseconds */ 122 } xfs_ictimestamp_t; 123 124 /* 125 * NOTE: This structure must be kept identical to struct xfs_dinode 126 * in xfs_dinode.h except for the endianness annotations. 127 */ 128 typedef struct xfs_icdinode { 129 __uint16_t di_magic; /* inode magic # = XFS_DINODE_MAGIC */ 130 __uint16_t di_mode; /* mode and type of file */ 131 __int8_t di_version; /* inode version */ 132 __int8_t di_format; /* format of di_c data */ 133 __uint16_t di_onlink; /* old number of links to file */ 134 __uint32_t di_uid; /* owner's user id */ 135 __uint32_t di_gid; /* owner's group id */ 136 __uint32_t di_nlink; /* number of links to file */ 137 __uint16_t di_projid; /* owner's project id */ 138 __uint8_t di_pad[8]; /* 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 cred; 216 struct ktrace; 217 struct xfs_buf; 218 struct xfs_bmap_free; 219 struct xfs_bmbt_irec; 220 struct xfs_inode_log_item; 221 struct xfs_mount; 222 struct xfs_trans; 223 struct xfs_dquot; 224 225 #if defined(XFS_ILOCK_TRACE) 226 #define XFS_ILOCK_KTRACE_SIZE 32 227 extern void xfs_ilock_trace(struct xfs_inode *, int, unsigned int, inst_t *); 228 #else 229 #define xfs_ilock_trace(i,n,f,ra) 230 #endif 231 232 typedef struct dm_attrs_s { 233 __uint32_t da_dmevmask; /* DMIG event mask */ 234 __uint16_t da_dmstate; /* DMIG state info */ 235 __uint16_t da_pad; /* DMIG extra padding */ 236 } dm_attrs_t; 237 238 typedef struct xfs_inode { 239 /* Inode linking and identification information. */ 240 struct xfs_mount *i_mount; /* fs mount struct ptr */ 241 struct xfs_dquot *i_udquot; /* user dquot */ 242 struct xfs_dquot *i_gdquot; /* group dquot */ 243 244 /* Inode location stuff */ 245 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 246 struct xfs_imap i_imap; /* location for xfs_imap() */ 247 248 /* Extent information. */ 249 xfs_ifork_t *i_afp; /* attribute fork pointer */ 250 xfs_ifork_t i_df; /* data fork */ 251 252 /* Transaction and locking information. */ 253 struct xfs_trans *i_transp; /* ptr to owning transaction*/ 254 struct xfs_inode_log_item *i_itemp; /* logging information */ 255 mrlock_t i_lock; /* inode lock */ 256 mrlock_t i_iolock; /* inode IO lock */ 257 struct completion i_flush; /* inode flush completion q */ 258 atomic_t i_pincount; /* inode pin count */ 259 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ 260 spinlock_t i_flags_lock; /* inode i_flags lock */ 261 /* Miscellaneous state. */ 262 unsigned short i_flags; /* see defined flags below */ 263 unsigned char i_update_core; /* timestamps/size is dirty */ 264 unsigned char i_update_size; /* di_size field is dirty */ 265 unsigned int i_delayed_blks; /* count of delay alloc blks */ 266 267 xfs_icdinode_t i_d; /* most of ondisk inode */ 268 269 xfs_fsize_t i_size; /* in-memory size */ 270 xfs_fsize_t i_new_size; /* size when write completes */ 271 atomic_t i_iocount; /* outstanding I/O count */ 272 273 /* VFS inode */ 274 struct inode i_vnode; /* embedded VFS inode */ 275 276 /* Trace buffers per inode. */ 277 #ifdef XFS_INODE_TRACE 278 struct ktrace *i_trace; /* general inode trace */ 279 #endif 280 #ifdef XFS_BMAP_TRACE 281 struct ktrace *i_xtrace; /* inode extent list trace */ 282 #endif 283 #ifdef XFS_BTREE_TRACE 284 struct ktrace *i_btrace; /* inode bmap btree trace */ 285 #endif 286 #ifdef XFS_RW_TRACE 287 struct ktrace *i_rwtrace; /* inode read/write trace */ 288 #endif 289 #ifdef XFS_ILOCK_TRACE 290 struct ktrace *i_lock_trace; /* inode lock/unlock trace */ 291 #endif 292 #ifdef XFS_DIR2_TRACE 293 struct ktrace *i_dir_trace; /* inode directory trace */ 294 #endif 295 } xfs_inode_t; 296 297 #define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ 298 (ip)->i_size : (ip)->i_d.di_size; 299 300 /* Convert from vfs inode to xfs inode */ 301 static inline struct xfs_inode *XFS_I(struct inode *inode) 302 { 303 return container_of(inode, struct xfs_inode, i_vnode); 304 } 305 306 /* convert from xfs inode to vfs inode */ 307 static inline struct inode *VFS_I(struct xfs_inode *ip) 308 { 309 return &ip->i_vnode; 310 } 311 312 /* 313 * Get rid of a partially initialized inode. 314 * 315 * We have to go through destroy_inode to make sure allocations 316 * from init_inode_always like the security data are undone. 317 * 318 * We mark the inode bad so that it takes the short cut in 319 * the reclaim path instead of going through the flush path 320 * which doesn't make sense for an inode that has never seen the 321 * light of day. 322 */ 323 static inline void xfs_destroy_inode(struct xfs_inode *ip) 324 { 325 make_bad_inode(VFS_I(ip)); 326 return destroy_inode(VFS_I(ip)); 327 } 328 329 /* 330 * i_flags helper functions 331 */ 332 static inline void 333 __xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 334 { 335 ip->i_flags |= flags; 336 } 337 338 static inline void 339 xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 340 { 341 spin_lock(&ip->i_flags_lock); 342 __xfs_iflags_set(ip, flags); 343 spin_unlock(&ip->i_flags_lock); 344 } 345 346 static inline void 347 xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 348 { 349 spin_lock(&ip->i_flags_lock); 350 ip->i_flags &= ~flags; 351 spin_unlock(&ip->i_flags_lock); 352 } 353 354 static inline int 355 __xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 356 { 357 return (ip->i_flags & flags); 358 } 359 360 static inline int 361 xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 362 { 363 int ret; 364 spin_lock(&ip->i_flags_lock); 365 ret = __xfs_iflags_test(ip, flags); 366 spin_unlock(&ip->i_flags_lock); 367 return ret; 368 } 369 370 static inline int 371 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) 372 { 373 int ret; 374 375 spin_lock(&ip->i_flags_lock); 376 ret = ip->i_flags & flags; 377 if (ret) 378 ip->i_flags &= ~flags; 379 spin_unlock(&ip->i_flags_lock); 380 return ret; 381 } 382 383 /* 384 * Manage the i_flush queue embedded in the inode. This completion 385 * queue synchronizes processes attempting to flush the in-core 386 * inode back to disk. 387 */ 388 static inline void xfs_iflock(xfs_inode_t *ip) 389 { 390 wait_for_completion(&ip->i_flush); 391 } 392 393 static inline int xfs_iflock_nowait(xfs_inode_t *ip) 394 { 395 return try_wait_for_completion(&ip->i_flush); 396 } 397 398 static inline void xfs_ifunlock(xfs_inode_t *ip) 399 { 400 complete(&ip->i_flush); 401 } 402 403 /* 404 * In-core inode flags. 405 */ 406 #define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */ 407 #define XFS_ISTALE 0x0002 /* inode has been staled */ 408 #define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */ 409 #define XFS_INEW 0x0008 /* inode has just been allocated */ 410 #define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */ 411 #define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */ 412 413 /* 414 * Flags for inode locking. 415 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 416 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 417 */ 418 #define XFS_IOLOCK_EXCL (1<<0) 419 #define XFS_IOLOCK_SHARED (1<<1) 420 #define XFS_ILOCK_EXCL (1<<2) 421 #define XFS_ILOCK_SHARED (1<<3) 422 #define XFS_IUNLOCK_NONOTIFY (1<<4) 423 424 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 425 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) 426 427 /* 428 * Flags for lockdep annotations. 429 * 430 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes 431 * (ie directory operations that require locking a directory inode and 432 * an entry inode). The first inode gets locked with this flag so it 433 * gets a lockdep subclass of 1 and the second lock will have a lockdep 434 * subclass of 0. 435 * 436 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 437 * with xfs_lock_inodes(). This flag is used as the starting subclass 438 * and each subsequent lock acquired will increment the subclass by one. 439 * So the first lock acquired will have a lockdep subclass of 2, the 440 * second lock will have a lockdep subclass of 3, and so on. It is 441 * the responsibility of the class builder to shift this to the correct 442 * portion of the lock_mode lockdep mask. 443 */ 444 #define XFS_LOCK_PARENT 1 445 #define XFS_LOCK_INUMORDER 2 446 447 #define XFS_IOLOCK_SHIFT 16 448 #define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) 449 450 #define XFS_ILOCK_SHIFT 24 451 #define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) 452 453 #define XFS_IOLOCK_DEP_MASK 0x00ff0000 454 #define XFS_ILOCK_DEP_MASK 0xff000000 455 #define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) 456 457 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) 458 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) 459 460 /* 461 * Flags for xfs_iflush() 462 */ 463 #define XFS_IFLUSH_DELWRI_ELSE_SYNC 1 464 #define XFS_IFLUSH_DELWRI_ELSE_ASYNC 2 465 #define XFS_IFLUSH_SYNC 3 466 #define XFS_IFLUSH_ASYNC 4 467 #define XFS_IFLUSH_DELWRI 5 468 #define XFS_IFLUSH_ASYNC_NOBLOCK 6 469 470 /* 471 * Flags for xfs_itruncate_start(). 472 */ 473 #define XFS_ITRUNC_DEFINITE 0x1 474 #define XFS_ITRUNC_MAYBE 0x2 475 476 /* 477 * For multiple groups support: if S_ISGID bit is set in the parent 478 * directory, group of new file is set to that of the parent, and 479 * new subdirectory gets S_ISGID bit from parent. 480 */ 481 #define XFS_INHERIT_GID(pip) \ 482 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ 483 ((pip)->i_d.di_mode & S_ISGID)) 484 485 /* 486 * xfs_iget.c prototypes. 487 */ 488 xfs_inode_t *xfs_inode_incore(struct xfs_mount *, xfs_ino_t, 489 struct xfs_trans *); 490 int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 491 uint, uint, xfs_inode_t **, xfs_daddr_t); 492 void xfs_iput(xfs_inode_t *, uint); 493 void xfs_iput_new(xfs_inode_t *, uint); 494 void xfs_ilock(xfs_inode_t *, uint); 495 int xfs_ilock_nowait(xfs_inode_t *, uint); 496 void xfs_iunlock(xfs_inode_t *, uint); 497 void xfs_ilock_demote(xfs_inode_t *, uint); 498 int xfs_isilocked(xfs_inode_t *, uint); 499 uint xfs_ilock_map_shared(xfs_inode_t *); 500 void xfs_iunlock_map_shared(xfs_inode_t *, uint); 501 void xfs_ireclaim(xfs_inode_t *); 502 503 /* 504 * xfs_inode.c prototypes. 505 */ 506 int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, 507 xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t, 508 int, struct xfs_buf **, boolean_t *, xfs_inode_t **); 509 510 uint xfs_ip2xflags(struct xfs_inode *); 511 uint xfs_dic2xflags(struct xfs_dinode *); 512 int xfs_ifree(struct xfs_trans *, xfs_inode_t *, 513 struct xfs_bmap_free *); 514 int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); 515 int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, 516 xfs_fsize_t, int, int); 517 int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); 518 519 void xfs_iext_realloc(xfs_inode_t *, int, int); 520 void xfs_ipin(xfs_inode_t *); 521 void xfs_iunpin(xfs_inode_t *); 522 int xfs_iflush(xfs_inode_t *, uint); 523 void xfs_ichgtime(xfs_inode_t *, int); 524 xfs_fsize_t xfs_file_last_byte(xfs_inode_t *); 525 void xfs_lock_inodes(xfs_inode_t **, int, uint); 526 void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); 527 528 void xfs_synchronize_atime(xfs_inode_t *); 529 void xfs_mark_inode_dirty_sync(xfs_inode_t *); 530 531 #if defined(XFS_INODE_TRACE) 532 533 #define INODE_TRACE_SIZE 16 /* number of trace entries */ 534 #define INODE_KTRACE_ENTRY 1 535 #define INODE_KTRACE_EXIT 2 536 #define INODE_KTRACE_HOLD 3 537 #define INODE_KTRACE_REF 4 538 #define INODE_KTRACE_RELE 5 539 540 extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *); 541 extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *); 542 extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *); 543 extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *); 544 extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *); 545 #define xfs_itrace_entry(ip) \ 546 _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address) 547 #define xfs_itrace_exit(ip) \ 548 _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address) 549 #define xfs_itrace_exit_tag(ip, tag) \ 550 _xfs_itrace_exit(ip, tag, (inst_t *)__return_address) 551 #define xfs_itrace_ref(ip) \ 552 _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address) 553 554 #else 555 #define xfs_itrace_entry(a) 556 #define xfs_itrace_exit(a) 557 #define xfs_itrace_exit_tag(a, b) 558 #define xfs_itrace_hold(a, b, c, d) 559 #define xfs_itrace_ref(a) 560 #define xfs_itrace_rele(a, b, c, d) 561 #endif 562 563 #define IHOLD(ip) \ 564 do { \ 565 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ 566 atomic_inc(&(VFS_I(ip)->i_count)); \ 567 xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ 568 } while (0) 569 570 #define IRELE(ip) \ 571 do { \ 572 xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \ 573 iput(VFS_I(ip)); \ 574 } while (0) 575 576 #endif /* __KERNEL__ */ 577 578 /* 579 * Flags for xfs_iget() 580 */ 581 #define XFS_IGET_CREATE 0x1 582 #define XFS_IGET_BULKSTAT 0x2 583 584 int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, 585 xfs_ino_t, struct xfs_dinode **, 586 struct xfs_buf **, int *, uint); 587 int xfs_itobp(struct xfs_mount *, struct xfs_trans *, 588 struct xfs_inode *, struct xfs_dinode **, 589 struct xfs_buf **, uint); 590 int xfs_iread(struct xfs_mount *, struct xfs_trans *, 591 struct xfs_inode *, xfs_daddr_t, uint); 592 void xfs_dinode_from_disk(struct xfs_icdinode *, 593 struct xfs_dinode *); 594 void xfs_dinode_to_disk(struct xfs_dinode *, 595 struct xfs_icdinode *); 596 void xfs_idestroy_fork(struct xfs_inode *, int); 597 void xfs_idata_realloc(struct xfs_inode *, int, int); 598 void xfs_iroot_realloc(struct xfs_inode *, int, int); 599 int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); 600 int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); 601 602 xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); 603 void xfs_iext_insert(xfs_ifork_t *, xfs_extnum_t, xfs_extnum_t, 604 xfs_bmbt_irec_t *); 605 void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); 606 void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); 607 void xfs_iext_remove(xfs_ifork_t *, xfs_extnum_t, int); 608 void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); 609 void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); 610 void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); 611 void xfs_iext_realloc_direct(xfs_ifork_t *, int); 612 void xfs_iext_realloc_indirect(xfs_ifork_t *, int); 613 void xfs_iext_indirect_to_direct(xfs_ifork_t *); 614 void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); 615 void xfs_iext_inline_to_direct(xfs_ifork_t *, int); 616 void xfs_iext_destroy(xfs_ifork_t *); 617 xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); 618 xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); 619 xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); 620 void xfs_iext_irec_init(xfs_ifork_t *); 621 xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); 622 void xfs_iext_irec_remove(xfs_ifork_t *, int); 623 void xfs_iext_irec_compact(xfs_ifork_t *); 624 void xfs_iext_irec_compact_pages(xfs_ifork_t *); 625 void xfs_iext_irec_compact_full(xfs_ifork_t *); 626 void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); 627 628 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 629 630 #ifdef DEBUG 631 void xfs_isize_check(struct xfs_mount *, struct xfs_inode *, 632 xfs_fsize_t); 633 #else /* DEBUG */ 634 #define xfs_isize_check(mp, ip, isize) 635 #endif /* DEBUG */ 636 637 #if defined(DEBUG) 638 void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); 639 #else 640 #define xfs_inobp_check(mp, bp) 641 #endif /* DEBUG */ 642 643 extern struct kmem_zone *xfs_ifork_zone; 644 extern struct kmem_zone *xfs_inode_zone; 645 extern struct kmem_zone *xfs_ili_zone; 646 647 #endif /* __XFS_INODE_H__ */ 648