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 */ 15struct xfs_dinode; 16struct xfs_inode; 17struct xfs_buf; 18struct xfs_bmbt_irec; 19struct xfs_inode_log_item; 20struct xfs_mount; 21struct xfs_trans; 22struct xfs_dquot; 23 24typedef 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 97static inline bool xfs_inode_on_unlinked_list(const struct xfs_inode *ip) 98{ 99 return ip->i_prev_unlinked != 0; 100} 101 102static inline bool xfs_inode_has_attr_fork(struct xfs_inode *ip) 103{ 104 return ip->i_forkoff > 0; 105} 106 107static inline struct xfs_ifork * 108xfs_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 127static inline unsigned int xfs_inode_fork_boff(struct xfs_inode *ip) 128{ 129 return ip->i_forkoff << 3; 130} 131 132static 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 140static 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 147static inline unsigned int 148xfs_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 */ 163static 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 */ 169static 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 */ 175static 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 */ 185static 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 */ 196static inline xfs_fsize_t 197xfs_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 */ 209static inline void 210__xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 211{ 212 ip->i_flags |= flags; 213} 214 215static inline void 216xfs_iflags_set(xfs_inode_t *ip, unsigned short flags) 217{ 218 spin_lock(&ip->i_flags_lock); 219 __xfs_iflags_set(ip, flags); 220 spin_unlock(&ip->i_flags_lock); 221} 222 223static inline void 224xfs_iflags_clear(xfs_inode_t *ip, unsigned short flags) 225{ 226 spin_lock(&ip->i_flags_lock); 227 ip->i_flags &= ~flags; 228 spin_unlock(&ip->i_flags_lock); 229} 230 231static inline int 232__xfs_iflags_test(xfs_inode_t *ip, unsigned short flags) 233{ 234 return (ip->i_flags & flags); 235} 236 237static inline int 238xfs_iflags_test(xfs_inode_t *ip, unsigned short 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 247static inline int 248xfs_iflags_test_and_clear(xfs_inode_t *ip, unsigned short 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 260static inline int 261xfs_iflags_test_and_set(xfs_inode_t *ip, unsigned short 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 273static inline prid_t 274xfs_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 282static inline bool xfs_is_reflink_inode(struct xfs_inode *ip) 283{ 284 return ip->i_diflags2 & XFS_DIFLAG2_REFLINK; 285} 286 287static 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 */ 299static inline bool xfs_inode_has_cow_data(struct xfs_inode *ip) 300{ 301 return ip->i_cowfp && ip->i_cowfp->if_bytes; 302} 303 304static inline bool xfs_inode_has_bigtime(struct xfs_inode *ip) 305{ 306 return ip->i_diflags2 & XFS_DIFLAG2_BIGTIME; 307} 308 309static 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 * Return the buftarg used for data allocations on a given inode. 316 */ 317#define xfs_inode_buftarg(ip) \ 318 (XFS_IS_REALTIME_INODE(ip) ? \ 319 (ip)->i_mount->m_rtdev_targp : (ip)->i_mount->m_ddev_targp) 320 321/* 322 * In-core inode flags. 323 */ 324#define XFS_IRECLAIM (1 << 0) /* started reclaiming this inode */ 325#define XFS_ISTALE (1 << 1) /* inode has been staled */ 326#define XFS_IRECLAIMABLE (1 << 2) /* inode can be reclaimed */ 327#define XFS_INEW (1 << 3) /* inode has just been allocated */ 328#define XFS_IPRESERVE_DM_FIELDS (1 << 4) /* has legacy DMAPI fields set */ 329#define XFS_ITRUNCATED (1 << 5) /* truncated down so flush-on-close */ 330#define XFS_IDIRTY_RELEASE (1 << 6) /* dirty release already seen */ 331#define XFS_IFLUSHING (1 << 7) /* inode is being flushed */ 332#define __XFS_IPINNED_BIT 8 /* wakeup key for zero pin count */ 333#define XFS_IPINNED (1 << __XFS_IPINNED_BIT) 334#define XFS_IEOFBLOCKS (1 << 9) /* has the preallocblocks tag set */ 335#define XFS_NEED_INACTIVE (1 << 10) /* see XFS_INACTIVATING below */ 336/* 337 * If this unlinked inode is in the middle of recovery, don't let drop_inode 338 * truncate and free the inode. This can happen if we iget the inode during 339 * log recovery to replay a bmap operation on the inode. 340 */ 341#define XFS_IRECOVERY (1 << 11) 342#define XFS_ICOWBLOCKS (1 << 12)/* has the cowblocks tag set */ 343 344/* 345 * If we need to update on-disk metadata before this IRECLAIMABLE inode can be 346 * freed, then NEED_INACTIVE will be set. Once we start the updates, the 347 * INACTIVATING bit will be set to keep iget away from this inode. After the 348 * inactivation completes, both flags will be cleared and the inode is a 349 * plain old IRECLAIMABLE inode. 350 */ 351#define XFS_INACTIVATING (1 << 13) 352 353/* Quotacheck is running but inode has not been added to quota counts. */ 354#define XFS_IQUOTAUNCHECKED (1 << 14) 355 356/* 357 * Remap in progress. Callers that wish to update file data while 358 * holding a shared IOLOCK or MMAPLOCK must drop the lock and retake 359 * the lock in exclusive mode. Relocking the file will block until 360 * IREMAPPING is cleared. 361 */ 362#define XFS_IREMAPPING (1U << 15) 363 364/* All inode state flags related to inode reclaim. */ 365#define XFS_ALL_IRECLAIM_FLAGS (XFS_IRECLAIMABLE | \ 366 XFS_IRECLAIM | \ 367 XFS_NEED_INACTIVE | \ 368 XFS_INACTIVATING) 369 370/* 371 * Per-lifetime flags need to be reset when re-using a reclaimable inode during 372 * inode lookup. This prevents unintended behaviour on the new inode from 373 * ocurring. 374 */ 375#define XFS_IRECLAIM_RESET_FLAGS \ 376 (XFS_IRECLAIMABLE | XFS_IRECLAIM | \ 377 XFS_IDIRTY_RELEASE | XFS_ITRUNCATED | XFS_NEED_INACTIVE | \ 378 XFS_INACTIVATING | XFS_IQUOTAUNCHECKED) 379 380/* 381 * Flags for inode locking. 382 * Bit ranges: 1<<1 - 1<<16-1 -- iolock/ilock modes (bitfield) 383 * 1<<16 - 1<<32-1 -- lockdep annotation (integers) 384 */ 385#define XFS_IOLOCK_EXCL (1u << 0) 386#define XFS_IOLOCK_SHARED (1u << 1) 387#define XFS_ILOCK_EXCL (1u << 2) 388#define XFS_ILOCK_SHARED (1u << 3) 389#define XFS_MMAPLOCK_EXCL (1u << 4) 390#define XFS_MMAPLOCK_SHARED (1u << 5) 391 392#define XFS_LOCK_MASK (XFS_IOLOCK_EXCL | XFS_IOLOCK_SHARED \ 393 | XFS_ILOCK_EXCL | XFS_ILOCK_SHARED \ 394 | XFS_MMAPLOCK_EXCL | XFS_MMAPLOCK_SHARED) 395 396#define XFS_LOCK_FLAGS \ 397 { XFS_IOLOCK_EXCL, "IOLOCK_EXCL" }, \ 398 { XFS_IOLOCK_SHARED, "IOLOCK_SHARED" }, \ 399 { XFS_ILOCK_EXCL, "ILOCK_EXCL" }, \ 400 { XFS_ILOCK_SHARED, "ILOCK_SHARED" }, \ 401 { XFS_MMAPLOCK_EXCL, "MMAPLOCK_EXCL" }, \ 402 { XFS_MMAPLOCK_SHARED, "MMAPLOCK_SHARED" } 403 404 405/* 406 * Flags for lockdep annotations. 407 * 408 * XFS_LOCK_PARENT - for directory operations that require locking a 409 * parent directory inode and a child entry inode. IOLOCK requires nesting, 410 * MMAPLOCK does not support this class, ILOCK requires a single subclass 411 * to differentiate parent from child. 412 * 413 * XFS_LOCK_RTBITMAP/XFS_LOCK_RTSUM - the realtime device bitmap and summary 414 * inodes do not participate in the normal lock order, and thus have their 415 * own subclasses. 416 * 417 * XFS_LOCK_INUMORDER - for locking several inodes at the some time 418 * with xfs_lock_inodes(). This flag is used as the starting subclass 419 * and each subsequent lock acquired will increment the subclass by one. 420 * However, MAX_LOCKDEP_SUBCLASSES == 8, which means we are greatly 421 * limited to the subclasses we can represent via nesting. We need at least 422 * 5 inodes nest depth for the ILOCK through rename, and we also have to support 423 * XFS_ILOCK_PARENT, which gives 6 subclasses. Then we have XFS_ILOCK_RTBITMAP 424 * and XFS_ILOCK_RTSUM, which are another 2 unique subclasses, so that's all 425 * 8 subclasses supported by lockdep. 426 * 427 * This also means we have to number the sub-classes in the lowest bits of 428 * the mask we keep, and we have to ensure we never exceed 3 bits of lockdep 429 * mask and we can't use bit-masking to build the subclasses. What a mess. 430 * 431 * Bit layout: 432 * 433 * Bit Lock Region 434 * 16-19 XFS_IOLOCK_SHIFT dependencies 435 * 20-23 XFS_MMAPLOCK_SHIFT dependencies 436 * 24-31 XFS_ILOCK_SHIFT dependencies 437 * 438 * IOLOCK values 439 * 440 * 0-3 subclass value 441 * 4-7 unused 442 * 443 * MMAPLOCK values 444 * 445 * 0-3 subclass value 446 * 4-7 unused 447 * 448 * ILOCK values 449 * 0-4 subclass values 450 * 5 PARENT subclass (not nestable) 451 * 6 RTBITMAP subclass (not nestable) 452 * 7 RTSUM subclass (not nestable) 453 * 454 */ 455#define XFS_IOLOCK_SHIFT 16 456#define XFS_IOLOCK_MAX_SUBCLASS 3 457#define XFS_IOLOCK_DEP_MASK 0x000f0000u 458 459#define XFS_MMAPLOCK_SHIFT 20 460#define XFS_MMAPLOCK_NUMORDER 0 461#define XFS_MMAPLOCK_MAX_SUBCLASS 3 462#define XFS_MMAPLOCK_DEP_MASK 0x00f00000u 463 464#define XFS_ILOCK_SHIFT 24 465#define XFS_ILOCK_PARENT_VAL 5u 466#define XFS_ILOCK_MAX_SUBCLASS (XFS_ILOCK_PARENT_VAL - 1) 467#define XFS_ILOCK_RTBITMAP_VAL 6u 468#define XFS_ILOCK_RTSUM_VAL 7u 469#define XFS_ILOCK_DEP_MASK 0xff000000u 470#define XFS_ILOCK_PARENT (XFS_ILOCK_PARENT_VAL << XFS_ILOCK_SHIFT) 471#define XFS_ILOCK_RTBITMAP (XFS_ILOCK_RTBITMAP_VAL << XFS_ILOCK_SHIFT) 472#define XFS_ILOCK_RTSUM (XFS_ILOCK_RTSUM_VAL << XFS_ILOCK_SHIFT) 473 474#define XFS_LOCK_SUBCLASS_MASK (XFS_IOLOCK_DEP_MASK | \ 475 XFS_MMAPLOCK_DEP_MASK | \ 476 XFS_ILOCK_DEP_MASK) 477 478#define XFS_IOLOCK_DEP(flags) (((flags) & XFS_IOLOCK_DEP_MASK) \ 479 >> XFS_IOLOCK_SHIFT) 480#define XFS_MMAPLOCK_DEP(flags) (((flags) & XFS_MMAPLOCK_DEP_MASK) \ 481 >> XFS_MMAPLOCK_SHIFT) 482#define XFS_ILOCK_DEP(flags) (((flags) & XFS_ILOCK_DEP_MASK) \ 483 >> XFS_ILOCK_SHIFT) 484 485/* 486 * Layouts are broken in the BREAK_WRITE case to ensure that 487 * layout-holders do not collide with local writes. Additionally, 488 * layouts are broken in the BREAK_UNMAP case to make sure the 489 * layout-holder has a consistent view of the file's extent map. While 490 * BREAK_WRITE breaks can be satisfied by recalling FL_LAYOUT leases, 491 * BREAK_UNMAP breaks additionally require waiting for busy dax-pages to 492 * go idle. 493 */ 494enum layout_break_reason { 495 BREAK_WRITE, 496 BREAK_UNMAP, 497}; 498 499/* 500 * For multiple groups support: if S_ISGID bit is set in the parent 501 * directory, group of new file is set to that of the parent, and 502 * new subdirectory gets S_ISGID bit from parent. 503 */ 504#define XFS_INHERIT_GID(pip) \ 505 (xfs_has_grpid((pip)->i_mount) || (VFS_I(pip)->i_mode & S_ISGID)) 506 507int xfs_release(struct xfs_inode *ip); 508int xfs_inactive(struct xfs_inode *ip); 509int xfs_lookup(struct xfs_inode *dp, const struct xfs_name *name, 510 struct xfs_inode **ipp, struct xfs_name *ci_name); 511int xfs_create(struct mnt_idmap *idmap, 512 struct xfs_inode *dp, struct xfs_name *name, 513 umode_t mode, dev_t rdev, bool need_xattr, 514 struct xfs_inode **ipp); 515int xfs_create_tmpfile(struct mnt_idmap *idmap, 516 struct xfs_inode *dp, umode_t mode, 517 struct xfs_inode **ipp); 518int xfs_remove(struct xfs_inode *dp, struct xfs_name *name, 519 struct xfs_inode *ip); 520int xfs_link(struct xfs_inode *tdp, struct xfs_inode *sip, 521 struct xfs_name *target_name); 522int xfs_rename(struct mnt_idmap *idmap, 523 struct xfs_inode *src_dp, struct xfs_name *src_name, 524 struct xfs_inode *src_ip, struct xfs_inode *target_dp, 525 struct xfs_name *target_name, 526 struct xfs_inode *target_ip, unsigned int flags); 527 528void xfs_ilock(xfs_inode_t *, uint); 529int xfs_ilock_nowait(xfs_inode_t *, uint); 530void xfs_iunlock(xfs_inode_t *, uint); 531void xfs_ilock_demote(xfs_inode_t *, uint); 532void xfs_assert_ilocked(struct xfs_inode *, uint); 533uint xfs_ilock_data_map_shared(struct xfs_inode *); 534uint xfs_ilock_attr_map_shared(struct xfs_inode *); 535 536uint xfs_ip2xflags(struct xfs_inode *); 537int xfs_ifree(struct xfs_trans *, struct xfs_inode *); 538int xfs_itruncate_extents_flags(struct xfs_trans **, 539 struct xfs_inode *, int, xfs_fsize_t, int); 540void xfs_iext_realloc(xfs_inode_t *, int, int); 541 542int xfs_log_force_inode(struct xfs_inode *ip); 543void xfs_iunpin_wait(xfs_inode_t *); 544#define xfs_ipincount(ip) ((unsigned int) atomic_read(&ip->i_pincount)) 545 546int xfs_iflush_cluster(struct xfs_buf *); 547void xfs_lock_two_inodes(struct xfs_inode *ip0, uint ip0_mode, 548 struct xfs_inode *ip1, uint ip1_mode); 549 550xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); 551xfs_extlen_t xfs_get_cowextsz_hint(struct xfs_inode *ip); 552 553int xfs_init_new_inode(struct mnt_idmap *idmap, struct xfs_trans *tp, 554 struct xfs_inode *pip, xfs_ino_t ino, umode_t mode, 555 xfs_nlink_t nlink, dev_t rdev, prid_t prid, bool init_xattrs, 556 struct xfs_inode **ipp); 557 558static inline int 559xfs_itruncate_extents( 560 struct xfs_trans **tpp, 561 struct xfs_inode *ip, 562 int whichfork, 563 xfs_fsize_t new_size) 564{ 565 return xfs_itruncate_extents_flags(tpp, ip, whichfork, new_size, 0); 566} 567 568/* from xfs_file.c */ 569int xfs_break_dax_layouts(struct inode *inode, bool *retry); 570int xfs_break_layouts(struct inode *inode, uint *iolock, 571 enum layout_break_reason reason); 572 573/* from xfs_iops.c */ 574extern void xfs_setup_inode(struct xfs_inode *ip); 575extern void xfs_setup_iops(struct xfs_inode *ip); 576extern void xfs_diflags_to_iflags(struct xfs_inode *ip, bool init); 577 578static inline void xfs_update_stable_writes(struct xfs_inode *ip) 579{ 580 if (bdev_stable_writes(xfs_inode_buftarg(ip)->bt_bdev)) 581 mapping_set_stable_writes(VFS_I(ip)->i_mapping); 582 else 583 mapping_clear_stable_writes(VFS_I(ip)->i_mapping); 584} 585 586/* 587 * When setting up a newly allocated inode, we need to call 588 * xfs_finish_inode_setup() once the inode is fully instantiated at 589 * the VFS level to prevent the rest of the world seeing the inode 590 * before we've completed instantiation. Otherwise we can do it 591 * the moment the inode lookup is complete. 592 */ 593static inline void xfs_finish_inode_setup(struct xfs_inode *ip) 594{ 595 xfs_iflags_clear(ip, XFS_INEW); 596 barrier(); 597 unlock_new_inode(VFS_I(ip)); 598} 599 600static inline void xfs_setup_existing_inode(struct xfs_inode *ip) 601{ 602 xfs_setup_inode(ip); 603 xfs_setup_iops(ip); 604 xfs_finish_inode_setup(ip); 605} 606 607void xfs_irele(struct xfs_inode *ip); 608 609extern struct kmem_cache *xfs_inode_cache; 610 611/* The default CoW extent size hint. */ 612#define XFS_DEFAULT_COWEXTSZ_HINT 32 613 614bool xfs_inode_needs_inactive(struct xfs_inode *ip); 615 616void xfs_end_io(struct work_struct *work); 617 618int xfs_ilock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); 619void xfs_iunlock2_io_mmap(struct xfs_inode *ip1, struct xfs_inode *ip2); 620void xfs_iunlock2_remapping(struct xfs_inode *ip1, struct xfs_inode *ip2); 621 622static inline bool 623xfs_inode_unlinked_incomplete( 624 struct xfs_inode *ip) 625{ 626 return VFS_I(ip)->i_nlink == 0 && !xfs_inode_on_unlinked_list(ip); 627} 628int xfs_inode_reload_unlinked_bucket(struct xfs_trans *tp, struct xfs_inode *ip); 629int xfs_inode_reload_unlinked(struct xfs_inode *ip); 630 631bool xfs_ifork_zapped(const struct xfs_inode *ip, int whichfork); 632void xfs_inode_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, 633 xfs_filblks_t *dblocks, xfs_filblks_t *rblocks); 634 635struct xfs_dir_update_params { 636 const struct xfs_inode *dp; 637 const struct xfs_inode *ip; 638 const struct xfs_name *name; 639 int delta; 640}; 641 642#ifdef CONFIG_XFS_LIVE_HOOKS 643void xfs_dir_update_hook(struct xfs_inode *dp, struct xfs_inode *ip, 644 int delta, const struct xfs_name *name); 645 646struct xfs_dir_hook { 647 struct xfs_hook dirent_hook; 648}; 649 650void xfs_dir_hook_disable(void); 651void xfs_dir_hook_enable(void); 652 653int xfs_dir_hook_add(struct xfs_mount *mp, struct xfs_dir_hook *hook); 654void xfs_dir_hook_del(struct xfs_mount *mp, struct xfs_dir_hook *hook); 655void xfs_dir_hook_setup(struct xfs_dir_hook *hook, notifier_fn_t mod_fn); 656#else 657# define xfs_dir_update_hook(dp, ip, delta, name) ((void)0) 658#endif /* CONFIG_XFS_LIVE_HOOKS */ 659 660#endif /* __XFS_INODE_H__ */ 661