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 21struct posix_acl; 22struct xfs_dinode; 23struct 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 */ 50typedef 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 63typedef 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 */ 90struct 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 119typedef 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 */ 128typedef 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 214struct bhv_desc; 215struct cred; 216struct xfs_buf; 217struct xfs_bmap_free; 218struct xfs_bmbt_irec; 219struct xfs_inode_log_item; 220struct xfs_mount; 221struct xfs_trans; 222struct xfs_dquot; 223 224typedef struct dm_attrs_s { 225 __uint32_t da_dmevmask; /* DMIG event mask */ 226 __uint16_t da_dmstate; /* DMIG state info */ 227 __uint16_t da_pad; /* DMIG extra padding */ 228} dm_attrs_t; 229 230typedef struct xfs_inode { 231 /* Inode linking and identification information. */ 232 struct xfs_mount *i_mount; /* fs mount struct ptr */ 233 struct xfs_dquot *i_udquot; /* user dquot */ 234 struct xfs_dquot *i_gdquot; /* group dquot */ 235 236 /* Inode location stuff */ 237 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 238 struct xfs_imap i_imap; /* location for xfs_imap() */ 239 240 /* Extent information. */ 241 xfs_ifork_t *i_afp; /* attribute fork pointer */ 242 xfs_ifork_t i_df; /* data fork */ 243 244 /* Transaction and locking information. */ 245 struct xfs_trans *i_transp; /* ptr to owning transaction*/ 246 struct xfs_inode_log_item *i_itemp; /* logging information */ 247 mrlock_t i_lock; /* inode lock */ 248 mrlock_t i_iolock; /* inode IO lock */ 249 struct completion i_flush; /* inode flush completion q */ 250 atomic_t i_pincount; /* inode pin count */ 251 wait_queue_head_t i_ipin_wait; /* inode pinning wait queue */ 252 spinlock_t i_flags_lock; /* inode i_flags lock */ 253 /* Miscellaneous state. */ 254 unsigned short i_flags; /* see defined flags below */ 255 unsigned char i_update_core; /* timestamps/size is dirty */ 256 unsigned int i_delayed_blks; /* count of delay alloc blks */ 257 258 xfs_icdinode_t i_d; /* most of ondisk inode */ 259 260 xfs_fsize_t i_size; /* in-memory size */ 261 xfs_fsize_t i_new_size; /* size when write completes */ 262 atomic_t i_iocount; /* outstanding I/O count */ 263 264 /* VFS inode */ 265 struct inode i_vnode; /* embedded VFS inode */ 266} xfs_inode_t; 267 268#define XFS_ISIZE(ip) (((ip)->i_d.di_mode & S_IFMT) == S_IFREG) ? \ 269 (ip)->i_size : (ip)->i_d.di_size; 270 271/* Convert from vfs inode to xfs inode */ 272static inline struct xfs_inode *XFS_I(struct inode *inode) 273{ 274 return container_of(inode, struct xfs_inode, i_vnode); 275} 276 277/* convert from xfs inode to vfs inode */ 278static inline struct inode *VFS_I(struct xfs_inode *ip) 279{ 280 return &ip->i_vnode; 281} 282 283/* 284 * i_flags helper functions 285 */ 286static inline void 287__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 288{ 289 ip->i_flags |= flags; 290} 291 292static inline void 293xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 294{ 295 spin_lock(&ip->i_flags_lock); 296 __xfs_iflags_set(ip, flags); 297 spin_unlock(&ip->i_flags_lock); 298} 299 300static inline void 301xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 302{ 303 spin_lock(&ip->i_flags_lock); 304 ip->i_flags &= ~flags; 305 spin_unlock(&ip->i_flags_lock); 306} 307 308static inline int 309__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 310{ 311 return (ip->i_flags & flags); 312} 313 314static inline int 315xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 316{ 317 int ret; 318 spin_lock(&ip->i_flags_lock); 319 ret = __xfs_iflags_test(ip, flags); 320 spin_unlock(&ip->i_flags_lock); 321 return ret; 322} 323 324static inline int 325xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short flags) 326{ 327 int ret; 328 329 spin_lock(&ip->i_flags_lock); 330 ret = ip->i_flags & flags; 331 if (ret) 332 ip->i_flags &= ~flags; 333 spin_unlock(&ip->i_flags_lock); 334 return ret; 335} 336 337/* 338 * Manage the i_flush queue embedded in the inode. This completion 339 * queue synchronizes processes attempting to flush the in-core 340 * inode back to disk. 341 */ 342static inline void xfs_iflock(xfs_inode_t *ip) 343{ 344 wait_for_completion(&ip->i_flush); 345} 346 347static inline int xfs_iflock_nowait(xfs_inode_t *ip) 348{ 349 return try_wait_for_completion(&ip->i_flush); 350} 351 352static inline void xfs_ifunlock(xfs_inode_t *ip) 353{ 354 complete(&ip->i_flush); 355} 356 357/* 358 * In-core inode flags. 359 */ 360#define XFS_IRECLAIM 0x0001 /* we have started reclaiming this inode */ 361#define XFS_ISTALE 0x0002 /* inode has been staled */ 362#define XFS_IRECLAIMABLE 0x0004 /* inode can be reclaimed */ 363#define XFS_INEW 0x0008 /* inode has just been allocated */ 364#define XFS_IFILESTREAM 0x0010 /* inode is in a filestream directory */ 365#define XFS_ITRUNCATED 0x0020 /* truncated down so flush-on-close */ 366 367/* 368 * Flags for inode locking. 369 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 370 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 371 */ 372#define XFS_IOLOCK_EXCL (1<<0) 373#define XFS_IOLOCK_SHARED (1<<1) 374#define XFS_ILOCK_EXCL (1<<2) 375#define XFS_ILOCK_SHARED (1<<3) 376#define XFS_IUNLOCK_NONOTIFY (1<<4) 377 378#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 379 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED) 380 381#define XFS_LOCK_FLAGS \ 382 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ 383 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ 384 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ 385 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ 386 { XFS_IUNLOCK_NONOTIFY, "IUNLOCK_NONOTIFY" } 387 388 389/* 390 * Flags for lockdep annotations. 391 * 392 * XFS_I[O]LOCK_PARENT - for operations that require locking two inodes 393 * (ie directory operations that require locking a directory inode and 394 * an entry inode). The first inode gets locked with this flag so it 395 * gets a lockdep subclass of 1 and the second lock will have a lockdep 396 * subclass of 0. 397 * 398 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 399 * with xfs_lock_inodes(). This flag is used as the starting subclass 400 * and each subsequent lock acquired will increment the subclass by one. 401 * So the first lock acquired will have a lockdep subclass of 2, the 402 * second lock will have a lockdep subclass of 3, and so on. It is 403 * the responsibility of the class builder to shift this to the correct 404 * portion of the lock_mode lockdep mask. 405 */ 406#define XFS_LOCK_PARENT 1 407#define XFS_LOCK_INUMORDER 2 408 409#define XFS_IOLOCK_SHIFT 16 410#define XFS_IOLOCK_PARENT (XFS_LOCK_PARENT << XFS_IOLOCK_SHIFT) 411 412#define XFS_ILOCK_SHIFT 24 413#define XFS_ILOCK_PARENT (XFS_LOCK_PARENT << XFS_ILOCK_SHIFT) 414 415#define XFS_IOLOCK_DEP_MASK 0x00ff0000 416#define XFS_ILOCK_DEP_MASK 0xff000000 417#define XFS_LOCK_DEP_MASK (XFS_IOLOCK_DEP_MASK | XFS_ILOCK_DEP_MASK) 418 419#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) >> XFS_IOLOCK_SHIFT) 420#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) >> XFS_ILOCK_SHIFT) 421 422/* 423 * Flags for xfs_itruncate_start(). 424 */ 425#define XFS_ITRUNC_DEFINITE 0x1 426#define XFS_ITRUNC_MAYBE 0x2 427 428#define XFS_ITRUNC_FLAGS \ 429 { XFS_ITRUNC_DEFINITE, "DEFINITE" }, \ 430 { XFS_ITRUNC_MAYBE, "MAYBE" } 431 432/* 433 * For multiple groups support: if S_ISGID bit is set in the parent 434 * directory, group of new file is set to that of the parent, and 435 * new subdirectory gets S_ISGID bit from parent. 436 */ 437#define XFS_INHERIT_GID(pip) \ 438 (((pip)->i_mount->m_flags & XFS_MOUNT_GRPID) || \ 439 ((pip)->i_d.di_mode & S_ISGID)) 440 441/* 442 * xfs_iget.c prototypes. 443 */ 444int xfs_iget(struct xfs_mount *, struct xfs_trans *, xfs_ino_t, 445 uint, uint, xfs_inode_t **); 446void xfs_ilock(xfs_inode_t *, uint); 447int xfs_ilock_nowait(xfs_inode_t *, uint); 448void xfs_iunlock(xfs_inode_t *, uint); 449void xfs_ilock_demote(xfs_inode_t *, uint); 450int xfs_isilocked(xfs_inode_t *, uint); 451uint xfs_ilock_map_shared(xfs_inode_t *); 452void xfs_iunlock_map_shared(xfs_inode_t *, uint); 453void xfs_inode_free(struct xfs_inode *ip); 454 455/* 456 * xfs_inode.c prototypes. 457 */ 458int xfs_ialloc(struct xfs_trans *, xfs_inode_t *, mode_t, 459 xfs_nlink_t, xfs_dev_t, cred_t *, xfs_prid_t, 460 int, struct xfs_buf **, boolean_t *, xfs_inode_t **); 461 462uint xfs_ip2xflags(struct xfs_inode *); 463uint xfs_dic2xflags(struct xfs_dinode *); 464int xfs_ifree(struct xfs_trans *, xfs_inode_t *, 465 struct xfs_bmap_free *); 466int xfs_itruncate_start(xfs_inode_t *, uint, xfs_fsize_t); 467int xfs_itruncate_finish(struct xfs_trans **, xfs_inode_t *, 468 xfs_fsize_t, int, int); 469int xfs_iunlink(struct xfs_trans *, xfs_inode_t *); 470 471void xfs_iext_realloc(xfs_inode_t *, int, int); 472void xfs_iunpin_wait(xfs_inode_t *); 473int xfs_iflush(xfs_inode_t *, uint); 474void xfs_ichgtime(xfs_inode_t *, int); 475void xfs_lock_inodes(xfs_inode_t **, int, uint); 476void xfs_lock_two_inodes(xfs_inode_t *, xfs_inode_t *, uint); 477 478void xfs_synchronize_times(xfs_inode_t *); 479void xfs_mark_inode_dirty(xfs_inode_t *); 480void xfs_mark_inode_dirty_sync(xfs_inode_t *); 481 482#define IHOLD(ip) \ 483do { \ 484 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \ 485 atomic_inc(&(VFS_I(ip)->i_count)); \ 486 trace_xfs_ihold(ip, _THIS_IP_); \ 487} while (0) 488 489#define IRELE(ip) \ 490do { \ 491 trace_xfs_irele(ip, _THIS_IP_); \ 492 iput(VFS_I(ip)); \ 493} while (0) 494 495#endif /* __KERNEL__ */ 496 497/* 498 * Flags for xfs_iget() 499 */ 500#define XFS_IGET_CREATE 0x1 501#define XFS_IGET_UNTRUSTED 0x2 502 503int xfs_inotobp(struct xfs_mount *, struct xfs_trans *, 504 xfs_ino_t, struct xfs_dinode **, 505 struct xfs_buf **, int *, uint); 506int xfs_itobp(struct xfs_mount *, struct xfs_trans *, 507 struct xfs_inode *, struct xfs_dinode **, 508 struct xfs_buf **, uint); 509int xfs_iread(struct xfs_mount *, struct xfs_trans *, 510 struct xfs_inode *, uint); 511void xfs_dinode_to_disk(struct xfs_dinode *, 512 struct xfs_icdinode *); 513void xfs_idestroy_fork(struct xfs_inode *, int); 514void xfs_idata_realloc(struct xfs_inode *, int, int); 515void xfs_iroot_realloc(struct xfs_inode *, int, int); 516int xfs_iread_extents(struct xfs_trans *, struct xfs_inode *, int); 517int xfs_iextents_copy(struct xfs_inode *, xfs_bmbt_rec_t *, int); 518 519xfs_bmbt_rec_host_t *xfs_iext_get_ext(xfs_ifork_t *, xfs_extnum_t); 520void xfs_iext_insert(xfs_inode_t *, xfs_extnum_t, xfs_extnum_t, 521 xfs_bmbt_irec_t *, int); 522void xfs_iext_add(xfs_ifork_t *, xfs_extnum_t, int); 523void xfs_iext_add_indirect_multi(xfs_ifork_t *, int, xfs_extnum_t, int); 524void xfs_iext_remove(xfs_inode_t *, xfs_extnum_t, int, int); 525void xfs_iext_remove_inline(xfs_ifork_t *, xfs_extnum_t, int); 526void xfs_iext_remove_direct(xfs_ifork_t *, xfs_extnum_t, int); 527void xfs_iext_remove_indirect(xfs_ifork_t *, xfs_extnum_t, int); 528void xfs_iext_realloc_direct(xfs_ifork_t *, int); 529void xfs_iext_direct_to_inline(xfs_ifork_t *, xfs_extnum_t); 530void xfs_iext_inline_to_direct(xfs_ifork_t *, int); 531void xfs_iext_destroy(xfs_ifork_t *); 532xfs_bmbt_rec_host_t *xfs_iext_bno_to_ext(xfs_ifork_t *, xfs_fileoff_t, int *); 533xfs_ext_irec_t *xfs_iext_bno_to_irec(xfs_ifork_t *, xfs_fileoff_t, int *); 534xfs_ext_irec_t *xfs_iext_idx_to_irec(xfs_ifork_t *, xfs_extnum_t *, int *, int); 535void xfs_iext_irec_init(xfs_ifork_t *); 536xfs_ext_irec_t *xfs_iext_irec_new(xfs_ifork_t *, int); 537void xfs_iext_irec_remove(xfs_ifork_t *, int); 538void xfs_iext_irec_compact(xfs_ifork_t *); 539void xfs_iext_irec_compact_pages(xfs_ifork_t *); 540void xfs_iext_irec_compact_full(xfs_ifork_t *); 541void xfs_iext_irec_update_extoffs(xfs_ifork_t *, int, int); 542 543#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 544 545#ifdef DEBUG 546void xfs_isize_check(struct xfs_mount *, struct xfs_inode *, 547 xfs_fsize_t); 548#else /* DEBUG */ 549#define xfs_isize_check(mp, ip, isize) 550#endif /* DEBUG */ 551 552#if defined(DEBUG) 553void xfs_inobp_check(struct xfs_mount *, struct xfs_buf *); 554#else 555#define xfs_inobp_check(mp, bp) 556#endif /* DEBUG */ 557 558extern struct kmem_zone *xfs_ifork_zone; 559extern struct kmem_zone *xfs_inode_zone; 560extern struct kmem_zone *xfs_ili_zone; 561 562#endif /* __XFS_INODE_H__ */ 563