1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2003,2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_INODE_H__ 7 #define __XFS_INODE_H__ 8 9 #include "xfs_inode_buf.h" 10 #include "xfs_inode_fork.h" 11 12 /* 13 * Kernel only inode definitions 14 */ 15 struct xfs_dinode; 16 struct xfs_inode; 17 struct xfs_buf; 18 struct xfs_bmbt_irec; 19 struct xfs_inode_log_item; 20 struct xfs_mount; 21 struct xfs_trans; 22 struct xfs_dquot; 23 24 typedef struct xfs_inode { 25 /* Inode linking and identification information. */ 26 struct xfs_mount *i_mount; /* fs mount struct ptr */ 27 struct xfs_dquot *i_udquot; /* user dquot */ 28 struct xfs_dquot *i_gdquot; /* group dquot */ 29 struct xfs_dquot *i_pdquot; /* project dquot */ 30 31 /* Inode location stuff */ 32 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 33 struct xfs_imap i_imap; /* location for xfs_imap() */ 34 35 /* Extent information. */ 36 struct xfs_ifork *i_cowfp; /* copy on write extents */ 37 struct xfs_ifork i_df; /* data fork */ 38 struct xfs_ifork i_af; /* attribute fork */ 39 40 /* Transaction and locking information. */ 41 struct xfs_inode_log_item *i_itemp; /* logging information */ 42 struct rw_semaphore i_lock; /* inode lock */ 43 atomic_t i_pincount; /* inode pin count */ 44 struct llist_node i_gclist; /* deferred inactivation list */ 45 46 /* 47 * Bitsets of inode metadata that have been checked and/or are sick. 48 * Callers must hold i_flags_lock before accessing this field. 49 */ 50 uint16_t i_checked; 51 uint16_t i_sick; 52 53 spinlock_t i_flags_lock; /* inode i_flags lock */ 54 /* Miscellaneous state. */ 55 unsigned long i_flags; /* see defined flags below */ 56 uint64_t i_delayed_blks; /* count of delay alloc blks */ 57 xfs_fsize_t i_disk_size; /* number of bytes in file */ 58 xfs_rfsblock_t i_nblocks; /* # of direct & btree blocks */ 59 prid_t i_projid; /* owner's project id */ 60 xfs_extlen_t i_extsize; /* basic/minimum extent size */ 61 /* cowextsize is only used for v3 inodes, flushiter for v1/2 */ 62 union { 63 xfs_extlen_t i_cowextsize; /* basic cow extent size */ 64 uint16_t i_flushiter; /* incremented on flush */ 65 }; 66 uint8_t i_forkoff; /* attr fork offset >> 3 */ 67 uint16_t i_diflags; /* XFS_DIFLAG_... */ 68 uint64_t i_diflags2; /* XFS_DIFLAG2_... */ 69 struct timespec64 i_crtime; /* time created */ 70 71 /* 72 * Unlinked list pointers. These point to the next and previous inodes 73 * in the AGI unlinked bucket list, respectively. These fields can 74 * only be updated with the AGI locked. 75 * 76 * i_next_unlinked caches di_next_unlinked. 77 */ 78 xfs_agino_t i_next_unlinked; 79 80 /* 81 * If the inode is not on an unlinked list, this field is zero. If the 82 * inode is the first element in an unlinked list, this field is 83 * NULLAGINO. Otherwise, i_prev_unlinked points to the previous inode 84 * in the unlinked list. 85 */ 86 xfs_agino_t i_prev_unlinked; 87 88 /* VFS inode */ 89 struct inode i_vnode; /* embedded VFS inode */ 90 91 /* pending io completions */ 92 spinlock_t i_ioend_lock; 93 struct work_struct i_ioend_work; 94 struct list_head i_ioend_list; 95 } xfs_inode_t; 96 97 static inline bool xfs_inode_on_unlinked_list(const struct xfs_inode *ip) 98 { 99 return ip->i_prev_unlinked != 0; 100 } 101 102 static inline bool xfs_inode_has_attr_fork(struct xfs_inode *ip) 103 { 104 return ip->i_forkoff > 0; 105 } 106 107 static inline struct xfs_ifork * 108 xfs_ifork_ptr( 109 struct xfs_inode *ip, 110 int whichfork) 111 { 112 switch (whichfork) { 113 case XFS_DATA_FORK: 114 return &ip->i_df; 115 case XFS_ATTR_FORK: 116 if (!xfs_inode_has_attr_fork(ip)) 117 return NULL; 118 return &ip->i_af; 119 case XFS_COW_FORK: 120 return ip->i_cowfp; 121 default: 122 ASSERT(0); 123 return NULL; 124 } 125 } 126 127 static inline unsigned int xfs_inode_fork_boff(struct xfs_inode *ip) 128 { 129 return ip->i_forkoff << 3; 130 } 131 132 static inline unsigned int xfs_inode_data_fork_size(struct xfs_inode *ip) 133 { 134 if (xfs_inode_has_attr_fork(ip)) 135 return xfs_inode_fork_boff(ip); 136 137 return XFS_LITINO(ip->i_mount); 138 } 139 140 static inline unsigned int xfs_inode_attr_fork_size(struct xfs_inode *ip) 141 { 142 if (xfs_inode_has_attr_fork(ip)) 143 return XFS_LITINO(ip->i_mount) - xfs_inode_fork_boff(ip); 144 return 0; 145 } 146 147 static inline unsigned int 148 xfs_inode_fork_size( 149 struct xfs_inode *ip, 150 int whichfork) 151 { 152 switch (whichfork) { 153 case XFS_DATA_FORK: 154 return xfs_inode_data_fork_size(ip); 155 case XFS_ATTR_FORK: 156 return xfs_inode_attr_fork_size(ip); 157 default: 158 return 0; 159 } 160 } 161 162 /* Convert from vfs inode to xfs inode */ 163 static inline struct xfs_inode *XFS_I(struct inode *inode) 164 { 165 return container_of(inode, struct xfs_inode, i_vnode); 166 } 167 168 /* convert from xfs inode to vfs inode */ 169 static inline struct inode *VFS_I(struct xfs_inode *ip) 170 { 171 return &ip->i_vnode; 172 } 173 174 /* convert from const xfs inode to const vfs inode */ 175 static inline const struct inode *VFS_IC(const struct xfs_inode *ip) 176 { 177 return &ip->i_vnode; 178 } 179 180 /* 181 * For regular files we only update the on-disk filesize when actually 182 * writing data back to disk. Until then only the copy in the VFS inode 183 * is uptodate. 184 */ 185 static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) 186 { 187 if (S_ISREG(VFS_I(ip)->i_mode)) 188 return i_size_read(VFS_I(ip)); 189 return ip->i_disk_size; 190 } 191 192 /* 193 * If this I/O goes past the on-disk inode size update it unless it would 194 * be past the current in-core inode size. 195 */ 196 static inline xfs_fsize_t 197 xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) 198 { 199 xfs_fsize_t i_size = i_size_read(VFS_I(ip)); 200 201 if (new_size > i_size || new_size < 0) 202 new_size = i_size; 203 return new_size > ip->i_disk_size ? new_size : 0; 204 } 205 206 /* 207 * i_flags helper functions 208 */ 209 static inline void 210 __xfs_iflags_set(xfs_inode_t *ip, unsigned long flags) 211 { 212 ip->i_flags |= flags; 213 } 214 215 static inline void 216 xfs_iflags_set(xfs_inode_t *ip, unsigned long flags) 217 { 218 spin_lock(&ip->i_flags_lock); 219 __xfs_iflags_set(ip, flags); 220 spin_unlock(&ip->i_flags_lock); 221 } 222 223 static inline void 224 xfs_iflags_clear(xfs_inode_t *ip, unsigned long flags) 225 { 226 spin_lock(&ip->i_flags_lock); 227 ip->i_flags &= ~flags; 228 spin_unlock(&ip->i_flags_lock); 229 } 230 231 static inline int 232 __xfs_iflags_test(xfs_inode_t *ip, unsigned long flags) 233 { 234 return (ip->i_flags & flags); 235 } 236 237 static inline int 238 xfs_iflags_test(xfs_inode_t *ip, unsigned long flags) 239 { 240 int ret; 241 spin_lock(&ip->i_flags_lock); 242 ret = __xfs_iflags_test(ip, flags); 243 spin_unlock(&ip->i_flags_lock); 244 return ret; 245 } 246 247 static inline int 248 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned long flags) 249 { 250 int ret; 251 252 spin_lock(&ip->i_flags_lock); 253 ret = ip->i_flags & flags; 254 if (ret) 255 ip->i_flags &= ~flags; 256 spin_unlock(&ip->i_flags_lock); 257 return ret; 258 } 259 260 static inline int 261 xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned long flags) 262 { 263 int ret; 264 265 spin_lock(&ip->i_flags_lock); 266 ret = ip->i_flags & flags; 267 if (!ret) 268 ip->i_flags |= flags; 269 spin_unlock(&ip->i_flags_lock); 270 return ret; 271 } 272 273 static inline prid_t 274 xfs_get_initial_prid(struct xfs_inode *dp) 275 { 276 if (dp->i_diflags & XFS_DIFLAG_PROJINHERIT) 277 return dp->i_projid; 278 279 return XFS_PROJID_DEFAULT; 280 } 281 282 static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) 283 { 284 return ip->i_diflags2 & XFS_DIFLAG2_REFLINK; 285 } 286 287 static inline bool xfs_is_metadata_inode(struct xfs_inode *ip) 288 { 289 struct xfs_mount *mp = ip->i_mount; 290 291 return ip == mp->m_rbmip || ip == mp->m_rsumip || 292 xfs_is_quota_inode(&mp->m_sb, ip->i_ino); 293 } 294 295 /* 296 * Check if an inode has any data in the COW fork. This might be often false 297 * even for inodes with the reflink flag when there is no pending COW operation. 298 */ 299 static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip) 300 { 301 return ip->i_cowfp && ip->i_cowfp->if_bytes; 302 } 303 304 static inline bool xfs_inode_has_bigtime(struct xfs_inode *ip) 305 { 306 return ip->i_diflags2 & XFS_DIFLAG2_BIGTIME; 307 } 308 309 static inline bool xfs_inode_has_large_extent_counts(struct xfs_inode *ip) 310 { 311 return ip->i_diflags2 & XFS_DIFLAG2_NREXT64; 312 } 313 314 /* 315 * Decide if this file is a realtime file whose data allocation unit is larger 316 * than a single filesystem block. 317 */ 318 static inline bool xfs_inode_has_bigrtalloc(struct xfs_inode *ip) 319 { 320 return XFS_IS_REALTIME_INODE(ip) && ip->i_mount->m_sb.sb_rextsize > 1; 321 } 322 323 /* 324 * Return the buftarg used for data allocations on a given inode. 325 */ 326 #define xfs_inode_buftarg(ip) \ 327 (XFS_IS_REALTIME_INODE(ip) ? \ 328 (ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp) 329 330 /* 331 * In-core inode flags. 332 */ 333 #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ 334 #define XFS_ISTALE (1 << 1) /* inode has been staled */ 335 #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ 336 #define XFS_INEW (1 << 3) /* inode has just been allocated */ 337 #define XFS_IPRESERVE_DM_FIELDS (1 << 4) /* has legacy DMAPI fields set */ 338 #define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ 339 #define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ 340 #define XFS_IFLUSHING (1 << 7) /* inode is being flushed */ 341 #define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ 342 #define XFS_IPINNED (1 << __XFS_IPINNED_BIT) 343 #define XFS_IEOFBLOCKS (1 << 9) /* has the preallocblocks tag set */ 344 #define XFS_NEED_INACTIVE (1 << 10) /* see XFS_INACTIVATING below */ 345 /* 346 * If this unlinked inode is in the middle of recovery, don't let drop_inode 347 * truncate and free the inode. This can happen if we iget the inode during 348 * log recovery to replay a bmap operation on the inode. 349 */ 350 #define XFS_IRECOVERY (1 << 11) 351 #define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */ 352 353 /* 354 * If we need to update on-disk metadata before this IRECLAIMABLE inode can be 355 * freed, then NEED_INACTIVE will be set. Once we start the updates, the 356 * INACTIVATING bit will be set to keep iget away from this inode. After the 357 * inactivation completes, both flags will be cleared and the inode is a 358 * plain old IRECLAIMABLE inode. 359 */ 360 #define XFS_INACTIVATING (1 << 13) 361 362 /* Quotacheck is running but inode has not been added to quota counts. */ 363 #define XFS_IQUOTAUNCHECKED (1 << 14) 364 365 /* 366 * Remap in progress. Callers that wish to update file data while 367 * holding a shared IOLOCK or MMAPLOCK must drop the lock and retake 368 * the lock in exclusive mode. Relocking the file will block until 369 * IREMAPPING is cleared. 370 */ 371 #define XFS_IREMAPPING (1U << 15) 372 373 /* All inode state flags related to inode reclaim. */ 374 #define XFS_ALL_IRECLAIM_FLAGS (XFS_IRECLAIMABLE | \ 375 XFS_IRECLAIM | \ 376 XFS_NEED_INACTIVE | \ 377 XFS_INACTIVATING) 378 379 /* 380 * Per-lifetime flags need to be reset when re-using a reclaimable inode during 381 * inode lookup. This prevents unintended behaviour on the new inode from 382 * ocurring. 383 */ 384 #define XFS_IRECLAIM_RESET_FLAGS \ 385 (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ 386 XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | XFS_NEED_INACTIVE | \ 387 XFS_INACTIVATING | XFS_IQUOTAUNCHECKED) 388 389 /* 390 * Flags for inode locking. 391 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 392 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 393 */ 394 #define XFS_IOLOCK_EXCL (1u << 0) 395 #define XFS_IOLOCK_SHARED (1u << 1) 396 #define XFS_ILOCK_EXCL (1u << 2) 397 #define XFS_ILOCK_SHARED (1u << 3) 398 #define XFS_MMAPLOCK_EXCL (1u << 4) 399 #define XFS_MMAPLOCK_SHARED (1u << 5) 400 401 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 402 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ 403 | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) 404 405 #define XFS_LOCK_FLAGS \ 406 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ 407 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ 408 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ 409 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ 410 { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ 411 { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } 412 413 414 /* 415 * Flags for lockdep annotations. 416 * 417 * XFS_LOCK_PARENT - for directory operations that require locking a 418 * parent directory inode and a child entry inode. IOLOCK requires nesting, 419 * MMAPLOCK does not support this class, ILOCK requires a single subclass 420 * to differentiate parent from child. 421 * 422 * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary 423 * inodes do not participate in the normal lock order, and thus have their 424 * own subclasses. 425 * 426 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 427 * with xfs_lock_inodes(). This flag is used as the starting subclass 428 * and each subsequent lock acquired will increment the subclass by one. 429 * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly 430 * limited to the subclasses we can represent via nesting. We need at least 431 * 5 inodes nest depth for the ILOCK through rename, and we also have to support 432 * XFS_ILOCK_PARENT, which gives 6 subclasses. Then we have XFS_ILOCK_RTBITMAP 433 * and XFS_ILOCK_RTSUM, which are another 2 unique subclasses, so that's all 434 * 8 subclasses supported by lockdep. 435 * 436 * This also means we have to number the sub-classes in the lowest bits of 437 * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep 438 * mask and we can't use bit-masking to build the subclasses. What a mess. 439 * 440 * Bit layout: 441 * 442 * Bit Lock Region 443 * 16-19 XFS_IOLOCK_SHIFT dependencies 444 * 20-23 XFS_MMAPLOCK_SHIFT dependencies 445 * 24-31 XFS_ILOCK_SHIFT dependencies 446 * 447 * IOLOCK values 448 * 449 * 0-3 subclass value 450 * 4-7 unused 451 * 452 * MMAPLOCK values 453 * 454 * 0-3 subclass value 455 * 4-7 unused 456 * 457 * ILOCK values 458 * 0-4 subclass values 459 * 5 PARENT subclass (not nestable) 460 * 6 RTBITMAP subclass (not nestable) 461 * 7 RTSUM subclass (not nestable) 462 * 463 */ 464 #define XFS_IOLOCK_SHIFT 16 465 #define XFS_IOLOCK_MAX_SUBCLASS 3 466 #define XFS_IOLOCK_DEP_MASK 0x000f0000u 467 468 #define XFS_MMAPLOCK_SHIFT 20 469 #define XFS_MMAPLOCK_NUMORDER 0 470 #define XFS_MMAPLOCK_MAX_SUBCLASS 3 471 #define XFS_MMAPLOCK_DEP_MASK 0x00f00000u 472 473 #define XFS_ILOCK_SHIFT 24 474 #define XFS_ILOCK_PARENT_VAL 5u 475 #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) 476 #define XFS_ILOCK_RTBITMAP_VAL 6u 477 #define XFS_ILOCK_RTSUM_VAL 7u 478 #define XFS_ILOCK_DEP_MASK 0xff000000u 479 #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) 480 #define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) 481 #define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) 482 483 #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ 484 XFS_MMAPLOCK_DEP_MASK | \ 485 XFS_ILOCK_DEP_MASK) 486 487 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ 488 >> XFS_IOLOCK_SHIFT) 489 #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ 490 >> XFS_MMAPLOCK_SHIFT) 491 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ 492 >> XFS_ILOCK_SHIFT) 493 494 /* 495 * Layouts are broken in the BREAK_WRITE case to ensure that 496 * layout-holders do not collide with local writes. Additionally, 497 * layouts are broken in the BREAK_UNMAP case to make sure the 498 * layout-holder has a consistent view of the file's extent map. While 499 * BREAK_WRITE breaks can be satisfied by recalling FL_LAYOUT leases, 500 * BREAK_UNMAP breaks additionally require waiting for busy dax-pages to 501 * go idle. 502 */ 503 enum layout_break_reason { 504 BREAK_WRITE, 505 BREAK_UNMAP, 506 }; 507 508 /* 509 * For multiple groups support: if S_ISGID bit is set in the parent 510 * directory, group of new file is set to that of the parent, and 511 * new subdirectory gets S_ISGID bit from parent. 512 */ 513 #define XFS_INHERIT_GID(pip) \ 514 (xfs_has_grpid((pip)->i_mount) || (VFS_I(pip)->i_mode & S_ISGID)) 515 516 int xfs_release(struct xfs_inode *ip); 517 int xfs_inactive(struct xfs_inode *ip); 518 int xfs_lookup(struct xfs_inode *dp, const struct xfs_name *name, 519 struct xfs_inode **ipp, struct xfs_name *ci_name); 520 int xfs_create(struct mnt_idmap *idmap, 521 struct xfs_inode *dp, struct xfs_name *name, 522 umode_t mode, dev_t rdev, bool need_xattr, 523 struct xfs_inode **ipp); 524 int xfs_create_tmpfile(struct mnt_idmap *idmap, 525 struct xfs_inode *dp, umode_t mode, bool init_xattrs, 526 struct xfs_inode **ipp); 527 int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, 528 struct xfs_inode *ip); 529 int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, 530 struct xfs_name *target_name); 531 int xfs_rename(struct mnt_idmap *idmap, 532 struct xfs_inode *src_dp, struct xfs_name *src_name, 533 struct xfs_inode *src_ip, struct xfs_inode *target_dp, 534 struct xfs_name *target_name, 535 struct xfs_inode *target_ip, unsigned int flags); 536 537 void xfs_ilock(xfs_inode_t *, uint); 538 int xfs_ilock_nowait(xfs_inode_t *, uint); 539 void xfs_iunlock(xfs_inode_t *, uint); 540 void xfs_ilock_demote(xfs_inode_t *, uint); 541 void xfs_assert_ilocked(struct xfs_inode *, uint); 542 uint xfs_ilock_data_map_shared(struct xfs_inode *); 543 uint xfs_ilock_attr_map_shared(struct xfs_inode *); 544 545 uint xfs_ip2xflags(struct xfs_inode *); 546 int xfs_ifree(struct xfs_trans *, struct xfs_inode *); 547 int xfs_itruncate_extents_flags(struct xfs_trans **, 548 struct xfs_inode *, int, xfs_fsize_t, int); 549 void xfs_iext_realloc(xfs_inode_t *, int, int); 550 551 int xfs_log_force_inode(struct xfs_inode *ip); 552 void xfs_iunpin_wait(xfs_inode_t *); 553 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 554 555 int xfs_iflush_cluster(struct xfs_buf *); 556 void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode, 557 struct xfs_inode *ip1, uint ip1_mode); 558 559 xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); 560 xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); 561 562 int xfs_init_new_inode(struct mnt_idmap *idmap, struct xfs_trans *tp, 563 struct xfs_inode *pip, xfs_ino_t ino, umode_t mode, 564 xfs_nlink_t nlink, dev_t rdev, prid_t prid, bool init_xattrs, 565 struct xfs_inode **ipp); 566 567 static inline int 568 xfs_itruncate_extents( 569 struct xfs_trans **tpp, 570 struct xfs_inode *ip, 571 int whichfork, 572 xfs_fsize_t new_size) 573 { 574 return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); 575 } 576 577 int xfs_break_dax_layouts(struct inode *inode, bool *retry); 578 int xfs_break_layouts(struct inode *inode, uint *iolock, 579 enum layout_break_reason reason); 580 581 static inline void xfs_update_stable_writes(struct xfs_inode *ip) 582 { 583 if (bdev_stable_writes(xfs_inode_buftarg(ip)->bt_bdev)) 584 mapping_set_stable_writes(VFS_I(ip)->i_mapping); 585 else 586 mapping_clear_stable_writes(VFS_I(ip)->i_mapping); 587 } 588 589 /* 590 * When setting up a newly allocated inode, we need to call 591 * xfs_finish_inode_setup() once the inode is fully instantiated at 592 * the VFS level to prevent the rest of the world seeing the inode 593 * before we've completed instantiation. Otherwise we can do it 594 * the moment the inode lookup is complete. 595 */ 596 static inline void xfs_finish_inode_setup(struct xfs_inode *ip) 597 { 598 xfs_iflags_clear(ip, XFS_INEW); 599 barrier(); 600 unlock_new_inode(VFS_I(ip)); 601 } 602 603 static inline void xfs_setup_existing_inode(struct xfs_inode *ip) 604 { 605 xfs_setup_inode(ip); 606 xfs_setup_iops(ip); 607 xfs_finish_inode_setup(ip); 608 } 609 610 void xfs_irele(struct xfs_inode *ip); 611 612 extern struct kmem_cache *xfs_inode_cache; 613 614 /* The default CoW extent size hint. */ 615 #define XFS_DEFAULT_COWEXTSZ_HINT 32 616 617 bool xfs_inode_needs_inactive(struct xfs_inode *ip); 618 619 int xfs_iunlink(struct xfs_trans *tp, struct xfs_inode *ip); 620 int xfs_iunlink_remove(struct xfs_trans *tp, struct xfs_perag *pag, 621 struct xfs_inode *ip); 622 struct xfs_inode *xfs_iunlink_lookup(struct xfs_perag *pag, xfs_agino_t agino); 623 624 void xfs_end_io(struct work_struct *work); 625 626 int xfs_ilock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); 627 void xfs_iunlock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); 628 void xfs_iunlock2_remapping(struct xfs_inode *ip1, struct xfs_inode *ip2); 629 int xfs_droplink(struct xfs_trans *tp, struct xfs_inode *ip); 630 void xfs_bumplink(struct xfs_trans *tp, struct xfs_inode *ip); 631 void xfs_lock_inodes(struct xfs_inode **ips, int inodes, uint lock_mode); 632 void xfs_sort_inodes(struct xfs_inode **i_tab, unsigned int num_inodes); 633 634 static inline bool 635 xfs_inode_unlinked_incomplete( 636 struct xfs_inode *ip) 637 { 638 return VFS_I(ip)->i_nlink == 0 && !xfs_inode_on_unlinked_list(ip); 639 } 640 int xfs_inode_reload_unlinked_bucket(struct xfs_trans *tp, struct xfs_inode *ip); 641 int xfs_inode_reload_unlinked(struct xfs_inode *ip); 642 643 bool xfs_ifork_zapped(const struct xfs_inode *ip, int whichfork); 644 void xfs_inode_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, 645 xfs_filblks_t *dblocks, xfs_filblks_t *rblocks); 646 unsigned int xfs_inode_alloc_unitsize(struct xfs_inode *ip); 647 648 struct xfs_dir_update_params { 649 const struct xfs_inode *dp; 650 const struct xfs_inode *ip; 651 const struct xfs_name *name; 652 int delta; 653 }; 654 655 #ifdef CONFIG_XFS_LIVE_HOOKS 656 void xfs_dir_update_hook(struct xfs_inode *dp, struct xfs_inode *ip, 657 int delta, const struct xfs_name *name); 658 659 struct xfs_dir_hook { 660 struct xfs_hook dirent_hook; 661 }; 662 663 void xfs_dir_hook_disable(void); 664 void xfs_dir_hook_enable(void); 665 666 int xfs_dir_hook_add(struct xfs_mount *mp, struct xfs_dir_hook *hook); 667 void xfs_dir_hook_del(struct xfs_mount *mp, struct xfs_dir_hook *hook); 668 void xfs_dir_hook_setup(struct xfs_dir_hook *hook, notifier_fn_t mod_fn); 669 #else 670 # define xfs_dir_update_hook(dp, ip, delta, name) ((void)0) 671 #endif /* CONFIG_XFS_LIVE_HOOKS */ 672 673 #endif /* __XFS_INODE_H__ */ 674