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 #include "xfs_inode_util.h" 12 13 /* 14 * Kernel only inode definitions 15 */ 16 struct xfs_dinode; 17 struct xfs_inode; 18 struct xfs_buf; 19 struct xfs_bmbt_irec; 20 struct xfs_inode_log_item; 21 struct xfs_mount; 22 struct xfs_trans; 23 struct xfs_dquot; 24 25 typedef struct xfs_inode { 26 /* Inode linking and identification information. */ 27 struct xfs_mount *i_mount; /* fs mount struct ptr */ 28 struct xfs_dquot *i_udquot; /* user dquot */ 29 struct xfs_dquot *i_gdquot; /* group dquot */ 30 struct xfs_dquot *i_pdquot; /* project dquot */ 31 32 /* Inode location stuff */ 33 xfs_ino_t i_ino; /* inode number (agno/agino)*/ 34 struct xfs_imap i_imap; /* location for xfs_imap() */ 35 36 /* Extent information. */ 37 struct xfs_ifork *i_cowfp; /* copy on write extents */ 38 struct xfs_ifork i_df; /* data fork */ 39 struct xfs_ifork i_af; /* attribute fork */ 40 41 /* Transaction and locking information. */ 42 struct xfs_inode_log_item *i_itemp; /* logging information */ 43 struct rw_semaphore i_lock; /* inode lock */ 44 atomic_t i_pincount; /* inode pin count */ 45 struct llist_node i_gclist; /* deferred inactivation list */ 46 47 /* 48 * Bitsets of inode metadata that have been checked and/or are sick. 49 * Callers must hold i_flags_lock before accessing this field. 50 */ 51 uint16_t i_checked; 52 uint16_t i_sick; 53 54 spinlock_t i_flags_lock; /* inode i_flags lock */ 55 /* Miscellaneous state. */ 56 unsigned long i_flags; /* see defined flags below */ 57 uint64_t i_delayed_blks; /* count of delay alloc blks */ 58 xfs_fsize_t i_disk_size; /* number of bytes in file */ 59 xfs_rfsblock_t i_nblocks; /* # of direct & btree blocks */ 60 prid_t i_projid; /* owner's project id */ 61 xfs_extlen_t i_extsize; /* basic/minimum extent size */ 62 /* cowextsize is only used for v3 inodes, flushiter for v1/2 */ 63 union { 64 xfs_extlen_t i_cowextsize; /* basic cow extent size */ 65 uint16_t i_flushiter; /* incremented on flush */ 66 }; 67 uint8_t i_forkoff; /* attr fork offset >> 3 */ 68 enum xfs_metafile_type i_metatype; /* XFS_METAFILE_* */ 69 uint16_t i_diflags; /* XFS_DIFLAG_... */ 70 uint64_t i_diflags2; /* XFS_DIFLAG2_... */ 71 struct timespec64 i_crtime; /* time created */ 72 73 /* 74 * Unlinked list pointers. These point to the next and previous inodes 75 * in the AGI unlinked bucket list, respectively. These fields can 76 * only be updated with the AGI locked. 77 * 78 * i_next_unlinked caches di_next_unlinked. 79 */ 80 xfs_agino_t i_next_unlinked; 81 82 /* 83 * If the inode is not on an unlinked list, this field is zero. If the 84 * inode is the first element in an unlinked list, this field is 85 * NULLAGINO. Otherwise, i_prev_unlinked points to the previous inode 86 * in the unlinked list. 87 */ 88 xfs_agino_t i_prev_unlinked; 89 90 /* VFS inode */ 91 struct inode i_vnode; /* embedded VFS inode */ 92 93 /* pending io completions */ 94 spinlock_t i_ioend_lock; 95 struct work_struct i_ioend_work; 96 struct list_head i_ioend_list; 97 } xfs_inode_t; 98 99 static inline bool xfs_inode_on_unlinked_list(const struct xfs_inode *ip) 100 { 101 return ip->i_prev_unlinked != 0; 102 } 103 104 static inline bool xfs_inode_has_attr_fork(const struct xfs_inode *ip) 105 { 106 return ip->i_forkoff > 0; 107 } 108 109 static inline struct xfs_ifork * 110 xfs_ifork_ptr( 111 struct xfs_inode *ip, 112 int whichfork) 113 { 114 switch (whichfork) { 115 case XFS_DATA_FORK: 116 return &ip->i_df; 117 case XFS_ATTR_FORK: 118 if (!xfs_inode_has_attr_fork(ip)) 119 return NULL; 120 return &ip->i_af; 121 case XFS_COW_FORK: 122 return ip->i_cowfp; 123 default: 124 ASSERT(0); 125 return NULL; 126 } 127 } 128 129 static inline unsigned int xfs_inode_fork_boff(struct xfs_inode *ip) 130 { 131 return ip->i_forkoff << 3; 132 } 133 134 static inline unsigned int xfs_inode_data_fork_size(struct xfs_inode *ip) 135 { 136 if (xfs_inode_has_attr_fork(ip)) 137 return xfs_inode_fork_boff(ip); 138 139 return XFS_LITINO(ip->i_mount); 140 } 141 142 static inline unsigned int xfs_inode_attr_fork_size(struct xfs_inode *ip) 143 { 144 if (xfs_inode_has_attr_fork(ip)) 145 return XFS_LITINO(ip->i_mount) - xfs_inode_fork_boff(ip); 146 return 0; 147 } 148 149 static inline unsigned int 150 xfs_inode_fork_size( 151 struct xfs_inode *ip, 152 int whichfork) 153 { 154 switch (whichfork) { 155 case XFS_DATA_FORK: 156 return xfs_inode_data_fork_size(ip); 157 case XFS_ATTR_FORK: 158 return xfs_inode_attr_fork_size(ip); 159 default: 160 return 0; 161 } 162 } 163 164 /* Convert from vfs inode to xfs inode */ 165 static inline struct xfs_inode *XFS_I(struct inode *inode) 166 { 167 return container_of(inode, struct xfs_inode, i_vnode); 168 } 169 170 /* convert from xfs inode to vfs inode */ 171 static inline struct inode *VFS_I(struct xfs_inode *ip) 172 { 173 return &ip->i_vnode; 174 } 175 176 /* convert from const xfs inode to const vfs inode */ 177 static inline const struct inode *VFS_IC(const struct xfs_inode *ip) 178 { 179 return &ip->i_vnode; 180 } 181 182 /* 183 * For regular files we only update the on-disk filesize when actually 184 * writing data back to disk. Until then only the copy in the VFS inode 185 * is uptodate. 186 */ 187 static inline xfs_fsize_t XFS_ISIZE(struct xfs_inode *ip) 188 { 189 if (S_ISREG(VFS_I(ip)->i_mode)) 190 return i_size_read(VFS_I(ip)); 191 return ip->i_disk_size; 192 } 193 194 /* 195 * If this I/O goes past the on-disk inode size update it unless it would 196 * be past the current in-core inode size. 197 */ 198 static inline xfs_fsize_t 199 xfs_new_eof(struct xfs_inode *ip, xfs_fsize_t new_size) 200 { 201 xfs_fsize_t i_size = i_size_read(VFS_I(ip)); 202 203 if (new_size > i_size || new_size < 0) 204 new_size = i_size; 205 return new_size > ip->i_disk_size ? new_size : 0; 206 } 207 208 /* 209 * i_flags helper functions 210 */ 211 static inline void 212 __xfs_iflags_set(xfs_inode_t *ip, unsigned long flags) 213 { 214 ip->i_flags |= flags; 215 } 216 217 static inline void 218 xfs_iflags_set(xfs_inode_t *ip, unsigned long flags) 219 { 220 spin_lock(&ip->i_flags_lock); 221 __xfs_iflags_set(ip, flags); 222 spin_unlock(&ip->i_flags_lock); 223 } 224 225 static inline void 226 xfs_iflags_clear(xfs_inode_t *ip, unsigned long flags) 227 { 228 spin_lock(&ip->i_flags_lock); 229 ip->i_flags &= ~flags; 230 spin_unlock(&ip->i_flags_lock); 231 } 232 233 static inline int 234 __xfs_iflags_test(xfs_inode_t *ip, unsigned long flags) 235 { 236 return (ip->i_flags & flags); 237 } 238 239 static inline int 240 xfs_iflags_test(xfs_inode_t *ip, unsigned long flags) 241 { 242 int ret; 243 spin_lock(&ip->i_flags_lock); 244 ret = __xfs_iflags_test(ip, flags); 245 spin_unlock(&ip->i_flags_lock); 246 return ret; 247 } 248 249 static inline int 250 xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned long flags) 251 { 252 int ret; 253 254 spin_lock(&ip->i_flags_lock); 255 ret = ip->i_flags & flags; 256 if (ret) 257 ip->i_flags &= ~flags; 258 spin_unlock(&ip->i_flags_lock); 259 return ret; 260 } 261 262 static inline int 263 xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned long flags) 264 { 265 int ret; 266 267 spin_lock(&ip->i_flags_lock); 268 ret = ip->i_flags & flags; 269 if (!ret) 270 ip->i_flags |= flags; 271 spin_unlock(&ip->i_flags_lock); 272 return ret; 273 } 274 275 static inline bool xfs_is_reflink_inode(const struct xfs_inode *ip) 276 { 277 return ip->i_diflags2 & XFS_DIFLAG2_REFLINK; 278 } 279 280 static inline bool xfs_is_metadir_inode(const struct xfs_inode *ip) 281 { 282 return ip->i_diflags2 & XFS_DIFLAG2_METADATA; 283 } 284 285 static inline bool xfs_is_internal_inode(const struct xfs_inode *ip) 286 { 287 struct xfs_mount *mp = ip->i_mount; 288 289 /* Any file in the metadata directory tree is a metadata inode. */ 290 if (xfs_has_metadir(mp)) 291 return xfs_is_metadir_inode(ip); 292 293 /* 294 * Before metadata directories, the only metadata inodes were the 295 * three quota files, the realtime bitmap, and the realtime summary. 296 */ 297 return ip->i_ino == mp->m_sb.sb_rbmino || 298 ip->i_ino == mp->m_sb.sb_rsumino || 299 xfs_is_quota_inode(&mp->m_sb, ip->i_ino); 300 } 301 302 bool xfs_is_always_cow_inode(const struct xfs_inode *ip); 303 304 static inline bool xfs_is_cow_inode(const struct xfs_inode *ip) 305 { 306 return xfs_is_reflink_inode(ip) || xfs_is_always_cow_inode(ip); 307 } 308 309 static inline bool xfs_inode_has_filedata(const struct xfs_inode *ip) 310 { 311 return ip->i_df.if_nextents > 0 || ip->i_delayed_blks > 0; 312 } 313 314 /* 315 * Check if an inode has any data in the COW fork. This might be often false 316 * even for inodes with the reflink flag when there is no pending COW operation. 317 */ 318 static inline bool xfs_inode_has_cow_data(const struct xfs_inode *ip) 319 { 320 return ip->i_cowfp && ip->i_cowfp->if_bytes; 321 } 322 323 static inline bool xfs_inode_has_bigtime(const struct xfs_inode *ip) 324 { 325 return ip->i_diflags2 & XFS_DIFLAG2_BIGTIME; 326 } 327 328 static inline bool xfs_inode_has_large_extent_counts(const struct xfs_inode *ip) 329 { 330 return ip->i_diflags2 & XFS_DIFLAG2_NREXT64; 331 } 332 333 /* 334 * Decide if this file is a realtime file whose data allocation unit is larger 335 * than a single filesystem block. 336 */ 337 static inline bool xfs_inode_has_bigrtalloc(const struct xfs_inode *ip) 338 { 339 return XFS_IS_REALTIME_INODE(ip) && ip->i_mount->m_sb.sb_rextsize > 1; 340 } 341 342 /* 343 * Return the buftarg used for data allocations on a given inode. 344 */ 345 #define xfs_inode_buftarg(ip) \ 346 (XFS_IS_REALTIME_INODE(ip) ? \ 347 (ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp) 348 349 static inline bool 350 xfs_inode_can_atomicwrite( 351 struct xfs_inode *ip) 352 { 353 struct xfs_mount *mp = ip->i_mount; 354 struct xfs_buftarg *target = xfs_inode_buftarg(ip); 355 356 if (mp->m_sb.sb_blocksize < target->bt_bdev_awu_min) 357 return false; 358 if (mp->m_sb.sb_blocksize > target->bt_bdev_awu_max) 359 return false; 360 361 return true; 362 } 363 364 /* 365 * In-core inode flags. 366 */ 367 #define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ 368 #define XFS_ISTALE (1 << 1) /* inode has been staled */ 369 #define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ 370 #define XFS_INEW (1 << 3) /* inode has just been allocated */ 371 #define XFS_IPRESERVE_DM_FIELDS (1 << 4) /* has legacy DMAPI fields set */ 372 #define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ 373 #define XFS_EOFBLOCKS_RELEASED (1 << 6) /* eofblocks were freed in ->release */ 374 #define XFS_IFLUSHING (1 << 7) /* inode is being flushed */ 375 #define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ 376 #define XFS_IPINNED (1 << __XFS_IPINNED_BIT) 377 #define XFS_IEOFBLOCKS (1 << 9) /* has the preallocblocks tag set */ 378 #define XFS_NEED_INACTIVE (1 << 10) /* see XFS_INACTIVATING below */ 379 /* 380 * If this unlinked inode is in the middle of recovery, don't let drop_inode 381 * truncate and free the inode. This can happen if we iget the inode during 382 * log recovery to replay a bmap operation on the inode. 383 */ 384 #define XFS_IRECOVERY (1 << 11) 385 #define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */ 386 387 /* 388 * If we need to update on-disk metadata before this IRECLAIMABLE inode can be 389 * freed, then NEED_INACTIVE will be set. Once we start the updates, the 390 * INACTIVATING bit will be set to keep iget away from this inode. After the 391 * inactivation completes, both flags will be cleared and the inode is a 392 * plain old IRECLAIMABLE inode. 393 */ 394 #define XFS_INACTIVATING (1 << 13) 395 396 /* Quotacheck is running but inode has not been added to quota counts. */ 397 #define XFS_IQUOTAUNCHECKED (1 << 14) 398 399 /* 400 * Remap in progress. Callers that wish to update file data while 401 * holding a shared IOLOCK or MMAPLOCK must drop the lock and retake 402 * the lock in exclusive mode. Relocking the file will block until 403 * IREMAPPING is cleared. 404 */ 405 #define XFS_IREMAPPING (1U << 15) 406 407 /* All inode state flags related to inode reclaim. */ 408 #define XFS_ALL_IRECLAIM_FLAGS (XFS_IRECLAIMABLE | \ 409 XFS_IRECLAIM | \ 410 XFS_NEED_INACTIVE | \ 411 XFS_INACTIVATING) 412 413 /* 414 * Per-lifetime flags need to be reset when re-using a reclaimable inode during 415 * inode lookup. This prevents unintended behaviour on the new inode from 416 * ocurring. 417 */ 418 #define XFS_IRECLAIM_RESET_FLAGS \ 419 (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ 420 XFS_EOFBLOCKS_RELEASED | XFS_ITRUNCATED | XFS_NEED_INACTIVE | \ 421 XFS_INACTIVATING | XFS_IQUOTAUNCHECKED) 422 423 /* 424 * Flags for inode locking. 425 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 426 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 427 */ 428 #define XFS_IOLOCK_EXCL (1u << 0) 429 #define XFS_IOLOCK_SHARED (1u << 1) 430 #define XFS_ILOCK_EXCL (1u << 2) 431 #define XFS_ILOCK_SHARED (1u << 3) 432 #define XFS_MMAPLOCK_EXCL (1u << 4) 433 #define XFS_MMAPLOCK_SHARED (1u << 5) 434 435 #define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 436 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ 437 | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) 438 439 #define XFS_LOCK_FLAGS \ 440 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ 441 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ 442 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ 443 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ 444 { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ 445 { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } 446 447 448 /* 449 * Flags for lockdep annotations. 450 * 451 * XFS_LOCK_PARENT - for directory operations that require locking a 452 * parent directory inode and a child entry inode. IOLOCK requires nesting, 453 * MMAPLOCK does not support this class, ILOCK requires a single subclass 454 * to differentiate parent from child. 455 * 456 * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary 457 * inodes do not participate in the normal lock order, and thus have their 458 * own subclasses. 459 * 460 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 461 * with xfs_lock_inodes(). This flag is used as the starting subclass 462 * and each subsequent lock acquired will increment the subclass by one. 463 * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly 464 * limited to the subclasses we can represent via nesting. We need at least 465 * 5 inodes nest depth for the ILOCK through rename, and we also have to support 466 * XFS_ILOCK_PARENT, which gives 6 subclasses. That's 6 of the 8 subclasses 467 * supported by lockdep. 468 * 469 * This also means we have to number the sub-classes in the lowest bits of 470 * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep 471 * mask and we can't use bit-masking to build the subclasses. What a mess. 472 * 473 * Bit layout: 474 * 475 * Bit Lock Region 476 * 16-19 XFS_IOLOCK_SHIFT dependencies 477 * 20-23 XFS_MMAPLOCK_SHIFT dependencies 478 * 24-31 XFS_ILOCK_SHIFT dependencies 479 * 480 * IOLOCK values 481 * 482 * 0-3 subclass value 483 * 4-7 unused 484 * 485 * MMAPLOCK values 486 * 487 * 0-3 subclass value 488 * 4-7 unused 489 * 490 * ILOCK values 491 * 0-4 subclass values 492 * 5 PARENT subclass (not nestable) 493 * 6 unused 494 * 7 unused 495 * 496 */ 497 #define XFS_IOLOCK_SHIFT 16 498 #define XFS_IOLOCK_MAX_SUBCLASS 3 499 #define XFS_IOLOCK_DEP_MASK 0x000f0000u 500 501 #define XFS_MMAPLOCK_SHIFT 20 502 #define XFS_MMAPLOCK_NUMORDER 0 503 #define XFS_MMAPLOCK_MAX_SUBCLASS 3 504 #define XFS_MMAPLOCK_DEP_MASK 0x00f00000u 505 506 #define XFS_ILOCK_SHIFT 24 507 #define XFS_ILOCK_PARENT_VAL 5u 508 #define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) 509 #define XFS_ILOCK_DEP_MASK 0xff000000u 510 #define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) 511 512 #define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ 513 XFS_MMAPLOCK_DEP_MASK | \ 514 XFS_ILOCK_DEP_MASK) 515 516 #define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ 517 >> XFS_IOLOCK_SHIFT) 518 #define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ 519 >> XFS_MMAPLOCK_SHIFT) 520 #define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ 521 >> XFS_ILOCK_SHIFT) 522 523 /* 524 * Layouts are broken in the BREAK_WRITE case to ensure that 525 * layout-holders do not collide with local writes. Additionally, 526 * layouts are broken in the BREAK_UNMAP case to make sure the 527 * layout-holder has a consistent view of the file's extent map. While 528 * BREAK_WRITE breaks can be satisfied by recalling FL_LAYOUT leases, 529 * BREAK_UNMAP breaks additionally require waiting for busy dax-pages to 530 * go idle. 531 */ 532 enum layout_break_reason { 533 BREAK_WRITE, 534 BREAK_UNMAP, 535 }; 536 537 /* 538 * For multiple groups support: if S_ISGID bit is set in the parent 539 * directory, group of new file is set to that of the parent, and 540 * new subdirectory gets S_ISGID bit from parent. 541 */ 542 #define XFS_INHERIT_GID(pip) \ 543 (xfs_has_grpid((pip)->i_mount) || (VFS_I(pip)->i_mode & S_ISGID)) 544 545 int xfs_inactive(struct xfs_inode *ip); 546 int xfs_lookup(struct xfs_inode *dp, const struct xfs_name *name, 547 struct xfs_inode **ipp, struct xfs_name *ci_name); 548 int xfs_create(const struct xfs_icreate_args *iargs, 549 struct xfs_name *name, struct xfs_inode **ipp); 550 int xfs_create_tmpfile(const struct xfs_icreate_args *iargs, 551 struct xfs_inode **ipp); 552 int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, 553 struct xfs_inode *ip); 554 int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, 555 struct xfs_name *target_name); 556 int xfs_rename(struct mnt_idmap *idmap, 557 struct xfs_inode *src_dp, struct xfs_name *src_name, 558 struct xfs_inode *src_ip, struct xfs_inode *target_dp, 559 struct xfs_name *target_name, 560 struct xfs_inode *target_ip, unsigned int flags); 561 562 void xfs_ilock(xfs_inode_t *, uint); 563 int xfs_ilock_nowait(xfs_inode_t *, uint); 564 void xfs_iunlock(xfs_inode_t *, uint); 565 void xfs_ilock_demote(xfs_inode_t *, uint); 566 void xfs_assert_ilocked(struct xfs_inode *, uint); 567 uint xfs_ilock_data_map_shared(struct xfs_inode *); 568 uint xfs_ilock_attr_map_shared(struct xfs_inode *); 569 570 int xfs_ifree(struct xfs_trans *, struct xfs_inode *); 571 int xfs_itruncate_extents_flags(struct xfs_trans **, 572 struct xfs_inode *, int, xfs_fsize_t, int); 573 void xfs_iext_realloc(xfs_inode_t *, int, int); 574 575 int xfs_log_force_inode(struct xfs_inode *ip); 576 void xfs_iunpin_wait(xfs_inode_t *); 577 #define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 578 579 int xfs_iflush_cluster(struct xfs_buf *); 580 void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode, 581 struct xfs_inode *ip1, uint ip1_mode); 582 583 int xfs_icreate(struct xfs_trans *tp, xfs_ino_t ino, 584 const struct xfs_icreate_args *args, struct xfs_inode **ipp); 585 586 static inline int 587 xfs_itruncate_extents( 588 struct xfs_trans **tpp, 589 struct xfs_inode *ip, 590 int whichfork, 591 xfs_fsize_t new_size) 592 { 593 return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); 594 } 595 596 int xfs_break_dax_layouts(struct inode *inode, bool *retry); 597 int xfs_break_layouts(struct inode *inode, uint *iolock, 598 enum layout_break_reason reason); 599 600 static inline void xfs_update_stable_writes(struct xfs_inode *ip) 601 { 602 if (bdev_stable_writes(xfs_inode_buftarg(ip)->bt_bdev)) 603 mapping_set_stable_writes(VFS_I(ip)->i_mapping); 604 else 605 mapping_clear_stable_writes(VFS_I(ip)->i_mapping); 606 } 607 608 /* 609 * When setting up a newly allocated inode, we need to call 610 * xfs_finish_inode_setup() once the inode is fully instantiated at 611 * the VFS level to prevent the rest of the world seeing the inode 612 * before we've completed instantiation. Otherwise we can do it 613 * the moment the inode lookup is complete. 614 */ 615 static inline void xfs_finish_inode_setup(struct xfs_inode *ip) 616 { 617 xfs_iflags_clear(ip, XFS_INEW); 618 barrier(); 619 unlock_new_inode(VFS_I(ip)); 620 } 621 622 static inline void xfs_setup_existing_inode(struct xfs_inode *ip) 623 { 624 xfs_setup_inode(ip); 625 xfs_setup_iops(ip); 626 xfs_finish_inode_setup(ip); 627 } 628 629 void xfs_irele(struct xfs_inode *ip); 630 631 extern struct kmem_cache *xfs_inode_cache; 632 633 /* The default CoW extent size hint. */ 634 #define XFS_DEFAULT_COWEXTSZ_HINT 32 635 636 bool xfs_inode_needs_inactive(struct xfs_inode *ip); 637 638 struct xfs_inode *xfs_iunlink_lookup(struct xfs_perag *pag, xfs_agino_t agino); 639 int xfs_iunlink_reload_next(struct xfs_trans *tp, struct xfs_buf *agibp, 640 xfs_agino_t prev_agino, xfs_agino_t next_agino); 641 642 void xfs_end_io(struct work_struct *work); 643 644 int xfs_ilock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); 645 void xfs_iunlock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); 646 void xfs_iunlock2_remapping(struct xfs_inode *ip1, struct xfs_inode *ip2); 647 void xfs_lock_inodes(struct xfs_inode **ips, int inodes, uint lock_mode); 648 void xfs_sort_inodes(struct xfs_inode **i_tab, unsigned int num_inodes); 649 650 static inline bool 651 xfs_inode_unlinked_incomplete( 652 const struct xfs_inode *ip) 653 { 654 return VFS_IC(ip)->i_nlink == 0 && !xfs_inode_on_unlinked_list(ip); 655 } 656 int xfs_inode_reload_unlinked_bucket(struct xfs_trans *tp, struct xfs_inode *ip); 657 int xfs_inode_reload_unlinked(struct xfs_inode *ip); 658 659 bool xfs_ifork_zapped(const struct xfs_inode *ip, int whichfork); 660 void xfs_inode_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, 661 xfs_filblks_t *dblocks, xfs_filblks_t *rblocks); 662 unsigned int xfs_inode_alloc_unitsize(struct xfs_inode *ip); 663 664 int xfs_icreate_dqalloc(const struct xfs_icreate_args *args, 665 struct xfs_dquot **udqpp, struct xfs_dquot **gdqpp, 666 struct xfs_dquot **pdqpp); 667 668 #endif /* __XFS_INODE_H__ */ 669