1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (c) 2000-2005 Silicon Graphics, Inc. 4 * All Rights Reserved. 5 */ 6 #ifndef __XFS_MOUNT_H__ 7 #define __XFS_MOUNT_H__ 8 9 struct xlog; 10 struct xfs_inode; 11 struct xfs_mru_cache; 12 struct xfs_ail; 13 struct xfs_quotainfo; 14 struct xfs_da_geometry; 15 struct xfs_perag; 16 17 /* dynamic preallocation free space thresholds, 5% down to 1% */ 18 enum { 19 XFS_LOWSP_1_PCNT = 0, 20 XFS_LOWSP_2_PCNT, 21 XFS_LOWSP_3_PCNT, 22 XFS_LOWSP_4_PCNT, 23 XFS_LOWSP_5_PCNT, 24 XFS_LOWSP_MAX, 25 }; 26 27 /* 28 * Error Configuration 29 * 30 * Error classes define the subsystem the configuration belongs to. 31 * Error numbers define the errors that are configurable. 32 */ 33 enum { 34 XFS_ERR_METADATA, 35 XFS_ERR_CLASS_MAX, 36 }; 37 enum { 38 XFS_ERR_DEFAULT, 39 XFS_ERR_EIO, 40 XFS_ERR_ENOSPC, 41 XFS_ERR_ENODEV, 42 XFS_ERR_ERRNO_MAX, 43 }; 44 45 #define XFS_ERR_RETRY_FOREVER -1 46 47 /* 48 * Although retry_timeout is in jiffies which is normally an unsigned long, 49 * we limit the retry timeout to 86400 seconds, or one day. So even a 50 * signed 32-bit long is sufficient for a HZ value up to 24855. Making it 51 * signed lets us store the special "-1" value, meaning retry forever. 52 */ 53 struct xfs_error_cfg { 54 struct xfs_kobj kobj; 55 int max_retries; 56 long retry_timeout; /* in jiffies, -1 = infinite */ 57 }; 58 59 /* 60 * Per-cpu deferred inode inactivation GC lists. 61 */ 62 struct xfs_inodegc { 63 struct xfs_mount *mp; 64 struct llist_head list; 65 struct delayed_work work; 66 int error; 67 68 /* approximate count of inodes in the list */ 69 unsigned int items; 70 unsigned int shrinker_hits; 71 unsigned int cpu; 72 }; 73 74 /* 75 * Container for each type of groups, used to look up individual groups and 76 * describes the geometry. 77 */ 78 struct xfs_groups { 79 struct xarray xa; 80 81 /* 82 * Maximum capacity of the group in FSBs. 83 * 84 * Each group is laid out densely in the daddr space. For the 85 * degenerate case of a pre-rtgroups filesystem, the incore rtgroup 86 * pretends to have a zero-block and zero-blklog rtgroup. 87 */ 88 uint32_t blocks; 89 90 /* 91 * Log(2) of the logical size of each group. 92 * 93 * Compared to the blocks field above this is rounded up to the next 94 * power of two, and thus lays out the xfs_fsblock_t/xfs_rtblock_t 95 * space sparsely with a hole from blocks to (1 << blklog) at the end 96 * of each group. 97 */ 98 uint8_t blklog; 99 100 /* 101 * Mask to extract the group-relative block number from a FSB. 102 * For a pre-rtgroups filesystem we pretend to have one very large 103 * rtgroup, so this mask must be 64-bit. 104 */ 105 uint64_t blkmask; 106 }; 107 108 /* 109 * The struct xfsmount layout is optimised to separate read-mostly variables 110 * from variables that are frequently modified. We put the read-mostly variables 111 * first, then place all the other variables at the end. 112 * 113 * Typically, read-mostly variables are those that are set at mount time and 114 * never changed again, or only change rarely as a result of things like sysfs 115 * knobs being tweaked. 116 */ 117 typedef struct xfs_mount { 118 struct xfs_sb m_sb; /* copy of fs superblock */ 119 struct super_block *m_super; 120 struct xfs_ail *m_ail; /* fs active log item list */ 121 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 122 struct xfs_buf *m_rtsb_bp; /* realtime superblock */ 123 char *m_rtname; /* realtime device name */ 124 char *m_logname; /* external log device name */ 125 struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ 126 struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ 127 struct xlog *m_log; /* log specific stuff */ 128 struct xfs_inode *m_rootip; /* pointer to root directory */ 129 struct xfs_inode *m_metadirip; /* ptr to metadata directory */ 130 struct xfs_inode *m_rtdirip; /* ptr to realtime metadir */ 131 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 132 struct xfs_buftarg *m_ddev_targp; /* data device */ 133 struct xfs_buftarg *m_logdev_targp;/* log device */ 134 struct xfs_buftarg *m_rtdev_targp; /* rt device */ 135 void __percpu *m_inodegc; /* percpu inodegc structures */ 136 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 137 struct workqueue_struct *m_buf_workqueue; 138 struct workqueue_struct *m_unwritten_workqueue; 139 struct workqueue_struct *m_reclaim_workqueue; 140 struct workqueue_struct *m_sync_workqueue; 141 struct workqueue_struct *m_blockgc_wq; 142 struct workqueue_struct *m_inodegc_wq; 143 144 int m_bsize; /* fs logical block size */ 145 uint8_t m_blkbit_log; /* blocklog + NBBY */ 146 uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 147 uint8_t m_agno_log; /* log #ag's */ 148 uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 149 int8_t m_rtxblklog; /* log2 of rextsize, if possible */ 150 151 uint m_blockmask; /* sb_blocksize-1 */ 152 uint m_blockwsize; /* sb_blocksize in words */ 153 /* number of rt extents per rt bitmap block if rtgroups enabled */ 154 unsigned int m_rtx_per_rbmblock; 155 uint m_alloc_mxr[2]; /* max alloc btree records */ 156 uint m_alloc_mnr[2]; /* min alloc btree records */ 157 uint m_bmap_dmxr[2]; /* max bmap btree records */ 158 uint m_bmap_dmnr[2]; /* min bmap btree records */ 159 uint m_rmap_mxr[2]; /* max rmap btree records */ 160 uint m_rmap_mnr[2]; /* min rmap btree records */ 161 uint m_rtrmap_mxr[2]; /* max rtrmap btree records */ 162 uint m_rtrmap_mnr[2]; /* min rtrmap btree records */ 163 uint m_refc_mxr[2]; /* max refc btree records */ 164 uint m_refc_mnr[2]; /* min refc btree records */ 165 uint m_rtrefc_mxr[2]; /* max rtrefc btree records */ 166 uint m_rtrefc_mnr[2]; /* min rtrefc btree records */ 167 uint m_alloc_maxlevels; /* max alloc btree levels */ 168 uint m_bm_maxlevels[2]; /* max bmap btree levels */ 169 uint m_rmap_maxlevels; /* max rmap btree levels */ 170 uint m_rtrmap_maxlevels; /* max rtrmap btree level */ 171 uint m_refc_maxlevels; /* max refcount btree level */ 172 uint m_rtrefc_maxlevels; /* max rtrefc btree level */ 173 unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ 174 unsigned int m_rtbtree_maxlevels; /* max level of all rt btrees */ 175 xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ 176 uint m_alloc_set_aside; /* space we can't use */ 177 uint m_ag_max_usable; /* max space per AG */ 178 int m_dalign; /* stripe unit */ 179 int m_swidth; /* stripe width */ 180 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 181 uint m_allocsize_log;/* min write size log bytes */ 182 uint m_allocsize_blocks; /* min write size blocks */ 183 int m_logbufs; /* number of log buffers */ 184 int m_logbsize; /* size of each log buffer */ 185 unsigned int m_rsumlevels; /* rt summary levels */ 186 xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */ 187 int m_fixedfsid[2]; /* unchanged for life of FS */ 188 uint m_qflags; /* quota status flags */ 189 uint64_t m_features; /* active filesystem features */ 190 uint64_t m_low_space[XFS_LOWSP_MAX]; 191 uint64_t m_low_rtexts[XFS_LOWSP_MAX]; 192 uint64_t m_rtxblkmask; /* rt extent block mask */ 193 struct xfs_ino_geometry m_ino_geo; /* inode geometry */ 194 struct xfs_trans_resv m_resv; /* precomputed res values */ 195 /* low free space thresholds */ 196 unsigned long m_opstate; /* dynamic state flags */ 197 bool m_always_cow; 198 bool m_fail_unmount; 199 bool m_finobt_nores; /* no per-AG finobt resv. */ 200 bool m_update_sb; /* sb needs update in mount */ 201 202 /* 203 * Bitsets of per-fs metadata that have been checked and/or are sick. 204 * Callers must hold m_sb_lock to access these two fields. 205 */ 206 uint8_t m_fs_checked; 207 uint8_t m_fs_sick; 208 /* 209 * Bitsets of rt metadata that have been checked and/or are sick. 210 * Callers must hold m_sb_lock to access this field. 211 */ 212 uint8_t m_rt_checked; 213 uint8_t m_rt_sick; 214 215 /* 216 * End of read-mostly variables. Frequently written variables and locks 217 * should be placed below this comment from now on. The first variable 218 * here is marked as cacheline aligned so they it is separated from 219 * the read-mostly variables. 220 */ 221 222 spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ 223 struct percpu_counter m_icount; /* allocated inodes counter */ 224 struct percpu_counter m_ifree; /* free inodes counter */ 225 struct percpu_counter m_fdblocks; /* free block counter */ 226 struct percpu_counter m_frextents; /* free rt extent counter */ 227 228 /* 229 * Count of data device blocks reserved for delayed allocations, 230 * including indlen blocks. Does not include allocated CoW staging 231 * extents or anything related to the rt device. 232 */ 233 struct percpu_counter m_delalloc_blks; 234 235 /* 236 * RT version of the above. 237 */ 238 struct percpu_counter m_delalloc_rtextents; 239 240 /* 241 * Global count of allocation btree blocks in use across all AGs. Only 242 * used when perag reservation is enabled. Helps prevent block 243 * reservation from attempting to reserve allocation btree blocks. 244 */ 245 atomic64_t m_allocbt_blks; 246 247 struct xfs_groups m_groups[XG_TYPE_MAX]; 248 uint64_t m_resblks; /* total reserved blocks */ 249 uint64_t m_resblks_avail;/* available reserved blocks */ 250 uint64_t m_resblks_save; /* reserved blks @ remount,ro */ 251 struct delayed_work m_reclaim_work; /* background inode reclaim */ 252 struct dentry *m_debugfs; /* debugfs parent */ 253 struct xfs_kobj m_kobj; 254 struct xfs_kobj m_error_kobj; 255 struct xfs_kobj m_error_meta_kobj; 256 struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; 257 struct xstats m_stats; /* per-fs stats */ 258 #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS 259 struct xchk_stats *m_scrub_stats; 260 #endif 261 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 262 atomic_t m_agirotor; /* last ag dir inode alloced */ 263 atomic_t m_rtgrotor; /* last rtgroup rtpicked */ 264 265 /* Memory shrinker to throttle and reprioritize inodegc */ 266 struct shrinker *m_inodegc_shrinker; 267 /* 268 * Workqueue item so that we can coalesce multiple inode flush attempts 269 * into a single flush. 270 */ 271 struct work_struct m_flush_inodes_work; 272 273 /* 274 * Generation of the filesysyem layout. This is incremented by each 275 * growfs, and used by the pNFS server to ensure the client updates 276 * its view of the block device once it gets a layout that might 277 * reference the newly added blocks. Does not need to be persistent 278 * as long as we only allow file system size increments, but if we 279 * ever support shrinks it would have to be persisted in addition 280 * to various other kinds of pain inflicted on the pNFS server. 281 */ 282 uint32_t m_generation; 283 struct mutex m_growlock; /* growfs mutex */ 284 285 #ifdef DEBUG 286 /* 287 * Frequency with which errors are injected. Replaces xfs_etest; the 288 * value stored in here is the inverse of the frequency with which the 289 * error triggers. 1 = always, 2 = half the time, etc. 290 */ 291 unsigned int *m_errortag; 292 struct xfs_kobj m_errortag_kobj; 293 #endif 294 295 /* cpus that have inodes queued for inactivation */ 296 struct cpumask m_inodegc_cpumask; 297 298 /* Hook to feed dirent updates to an active online repair. */ 299 struct xfs_hooks m_dir_update_hooks; 300 } xfs_mount_t; 301 302 #define M_IGEO(mp) (&(mp)->m_ino_geo) 303 304 /* 305 * Flags for m_features. 306 * 307 * These are all the active features in the filesystem, regardless of how 308 * they are configured. 309 */ 310 #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ 311 #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ 312 #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ 313 #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ 314 #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ 315 #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ 316 #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ 317 #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ 318 #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ 319 #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ 320 #define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */ 321 #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ 322 #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ 323 #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ 324 #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ 325 #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ 326 #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ 327 #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ 328 #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ 329 #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ 330 #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ 331 #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ 332 #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ 333 #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ 334 #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ 335 #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ 336 #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ 337 #define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */ 338 #define XFS_FEAT_METADIR (1ULL << 28) /* metadata directory tree */ 339 340 /* Mount features */ 341 #define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */ 342 #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ 343 #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ 344 #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred 345 * I/O size in stat() */ 346 #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ 347 #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ 348 #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ 349 #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ 350 #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ 351 #define XFS_FEAT_IKEEP (1ULL << 57) /* keep empty inode clusters*/ 352 #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ 353 #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ 354 #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ 355 #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ 356 #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ 357 #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ 358 359 #define __XFS_HAS_FEAT(name, NAME) \ 360 static inline bool xfs_has_ ## name (const struct xfs_mount *mp) \ 361 { \ 362 return mp->m_features & XFS_FEAT_ ## NAME; \ 363 } 364 365 /* Some features can be added dynamically so they need a set wrapper, too. */ 366 #define __XFS_ADD_FEAT(name, NAME) \ 367 __XFS_HAS_FEAT(name, NAME); \ 368 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 369 { \ 370 mp->m_features |= XFS_FEAT_ ## NAME; \ 371 xfs_sb_version_add ## name(&mp->m_sb); \ 372 } 373 374 /* Superblock features */ 375 __XFS_ADD_FEAT(attr, ATTR) 376 __XFS_HAS_FEAT(nlink, NLINK) 377 __XFS_ADD_FEAT(quota, QUOTA) 378 __XFS_HAS_FEAT(dalign, DALIGN) 379 __XFS_HAS_FEAT(sector, SECTOR) 380 __XFS_HAS_FEAT(asciici, ASCIICI) 381 __XFS_HAS_FEAT(parent, PARENT) 382 __XFS_HAS_FEAT(ftype, FTYPE) 383 __XFS_HAS_FEAT(finobt, FINOBT) 384 __XFS_HAS_FEAT(rmapbt, RMAPBT) 385 __XFS_HAS_FEAT(reflink, REFLINK) 386 __XFS_HAS_FEAT(sparseinodes, SPINODES) 387 __XFS_HAS_FEAT(metauuid, META_UUID) 388 __XFS_HAS_FEAT(realtime, REALTIME) 389 __XFS_HAS_FEAT(inobtcounts, INOBTCNT) 390 __XFS_HAS_FEAT(bigtime, BIGTIME) 391 __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) 392 __XFS_HAS_FEAT(large_extent_counts, NREXT64) 393 __XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE) 394 __XFS_HAS_FEAT(metadir, METADIR) 395 396 static inline bool xfs_has_rtgroups(const struct xfs_mount *mp) 397 { 398 /* all metadir file systems also allow rtgroups */ 399 return xfs_has_metadir(mp); 400 } 401 402 static inline bool xfs_has_rtsb(const struct xfs_mount *mp) 403 { 404 /* all rtgroups filesystems with an rt section have an rtsb */ 405 return xfs_has_rtgroups(mp) && xfs_has_realtime(mp); 406 } 407 408 static inline bool xfs_has_rtrmapbt(const struct xfs_mount *mp) 409 { 410 return xfs_has_rtgroups(mp) && xfs_has_realtime(mp) && 411 xfs_has_rmapbt(mp); 412 } 413 414 static inline bool xfs_has_rtreflink(const struct xfs_mount *mp) 415 { 416 return xfs_has_metadir(mp) && xfs_has_realtime(mp) && 417 xfs_has_reflink(mp); 418 } 419 420 /* 421 * Some features are always on for v5 file systems, allow the compiler to 422 * eliminiate dead code when building without v4 support. 423 */ 424 #define __XFS_HAS_V4_FEAT(name, NAME) \ 425 static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ 426 { \ 427 return !IS_ENABLED(CONFIG_XFS_SUPPORT_V4) || \ 428 (mp->m_features & XFS_FEAT_ ## NAME); \ 429 } 430 431 #define __XFS_ADD_V4_FEAT(name, NAME) \ 432 __XFS_HAS_V4_FEAT(name, NAME); \ 433 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 434 { \ 435 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) { \ 436 mp->m_features |= XFS_FEAT_ ## NAME; \ 437 xfs_sb_version_add ## name(&mp->m_sb); \ 438 } \ 439 } 440 441 __XFS_HAS_V4_FEAT(align, ALIGN) 442 __XFS_HAS_V4_FEAT(logv2, LOGV2) 443 __XFS_HAS_V4_FEAT(extflg, EXTFLG) 444 __XFS_HAS_V4_FEAT(lazysbcount, LAZYSBCOUNT) 445 __XFS_ADD_V4_FEAT(attr2, ATTR2) 446 __XFS_ADD_V4_FEAT(projid32, PROJID32) 447 __XFS_HAS_V4_FEAT(v3inodes, V3INODES) 448 __XFS_HAS_V4_FEAT(crc, CRC) 449 __XFS_HAS_V4_FEAT(pquotino, PQUOTINO) 450 451 /* 452 * Mount features 453 * 454 * These do not change dynamically - features that can come and go, such as 32 455 * bit inodes and read-only state, are kept as operational state rather than 456 * features. 457 */ 458 __XFS_HAS_FEAT(noattr2, NOATTR2) 459 __XFS_HAS_FEAT(noalign, NOALIGN) 460 __XFS_HAS_FEAT(allocsize, ALLOCSIZE) 461 __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) 462 __XFS_HAS_FEAT(wsync, WSYNC) 463 __XFS_HAS_FEAT(dirsync, DIRSYNC) 464 __XFS_HAS_FEAT(discard, DISCARD) 465 __XFS_HAS_FEAT(grpid, GRPID) 466 __XFS_HAS_FEAT(small_inums, SMALL_INUMS) 467 __XFS_HAS_FEAT(ikeep, IKEEP) 468 __XFS_HAS_FEAT(swalloc, SWALLOC) 469 __XFS_HAS_FEAT(filestreams, FILESTREAMS) 470 __XFS_HAS_FEAT(dax_always, DAX_ALWAYS) 471 __XFS_HAS_FEAT(dax_never, DAX_NEVER) 472 __XFS_HAS_FEAT(norecovery, NORECOVERY) 473 __XFS_HAS_FEAT(nouuid, NOUUID) 474 475 /* 476 * Operational mount state flags 477 * 478 * Use these with atomic bit ops only! 479 */ 480 #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ 481 #define XFS_OPSTATE_CLEAN 1 /* mount was clean */ 482 #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ 483 #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ 484 #define XFS_OPSTATE_READONLY 4 /* read-only fs */ 485 486 /* 487 * If set, inactivation worker threads will be scheduled to process queued 488 * inodegc work. If not, queued inodes remain in memory waiting to be 489 * processed. 490 */ 491 #define XFS_OPSTATE_INODEGC_ENABLED 5 492 /* 493 * If set, background speculative prealloc gc worker threads will be scheduled 494 * to process queued blockgc work. If not, inodes retain their preallocations 495 * until explicitly deleted. 496 */ 497 #define XFS_OPSTATE_BLOCKGC_ENABLED 6 498 499 /* Kernel has logged a warning about pNFS being used on this fs. */ 500 #define XFS_OPSTATE_WARNED_PNFS 7 501 /* Kernel has logged a warning about online fsck being used on this fs. */ 502 #define XFS_OPSTATE_WARNED_SCRUB 8 503 /* Kernel has logged a warning about shrink being used on this fs. */ 504 #define XFS_OPSTATE_WARNED_SHRINK 9 505 /* Kernel has logged a warning about logged xattr updates being used. */ 506 #define XFS_OPSTATE_WARNED_LARP 10 507 /* Mount time quotacheck is running */ 508 #define XFS_OPSTATE_QUOTACHECK_RUNNING 11 509 /* Do we want to clear log incompat flags? */ 510 #define XFS_OPSTATE_UNSET_LOG_INCOMPAT 12 511 /* Filesystem can use logged extended attributes */ 512 #define XFS_OPSTATE_USE_LARP 13 513 /* Kernel has logged a warning about blocksize > pagesize on this fs. */ 514 #define XFS_OPSTATE_WARNED_LBS 14 515 /* Kernel has logged a warning about exchange-range being used on this fs. */ 516 #define XFS_OPSTATE_WARNED_EXCHRANGE 15 517 /* Kernel has logged a warning about parent pointers being used on this fs. */ 518 #define XFS_OPSTATE_WARNED_PPTR 16 519 /* Kernel has logged a warning about metadata dirs being used on this fs. */ 520 #define XFS_OPSTATE_WARNED_METADIR 17 521 /* Filesystem should use qflags to determine quotaon status */ 522 #define XFS_OPSTATE_RESUMING_QUOTAON 18 523 524 #define __XFS_IS_OPSTATE(name, NAME) \ 525 static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ 526 { \ 527 return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 528 } \ 529 static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ 530 { \ 531 return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 532 } \ 533 static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ 534 { \ 535 return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 536 } 537 538 __XFS_IS_OPSTATE(unmounting, UNMOUNTING) 539 __XFS_IS_OPSTATE(clean, CLEAN) 540 __XFS_IS_OPSTATE(shutdown, SHUTDOWN) 541 __XFS_IS_OPSTATE(inode32, INODE32) 542 __XFS_IS_OPSTATE(readonly, READONLY) 543 __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) 544 __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) 545 #ifdef CONFIG_XFS_QUOTA 546 __XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING) 547 __XFS_IS_OPSTATE(resuming_quotaon, RESUMING_QUOTAON) 548 #else 549 static inline bool xfs_is_quotacheck_running(struct xfs_mount *mp) 550 { 551 return false; 552 } 553 static inline bool xfs_is_resuming_quotaon(struct xfs_mount *mp) 554 { 555 return false; 556 } 557 static inline void xfs_set_resuming_quotaon(struct xfs_mount *m) 558 { 559 } 560 static inline bool xfs_clear_resuming_quotaon(struct xfs_mount *mp) 561 { 562 return false; 563 } 564 #endif /* CONFIG_XFS_QUOTA */ 565 __XFS_IS_OPSTATE(done_with_log_incompat, UNSET_LOG_INCOMPAT) 566 __XFS_IS_OPSTATE(using_logged_xattrs, USE_LARP) 567 568 static inline bool 569 xfs_should_warn(struct xfs_mount *mp, long nr) 570 { 571 return !test_and_set_bit(nr, &mp->m_opstate); 572 } 573 574 #define XFS_OPSTATE_STRINGS \ 575 { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ 576 { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ 577 { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ 578 { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ 579 { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ 580 { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ 581 { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ 582 { (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \ 583 { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ 584 { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \ 585 { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \ 586 { (1UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \ 587 { (1UL << XFS_OPSTATE_USE_LARP), "logged_xattrs" } 588 589 /* 590 * Max and min values for mount-option defined I/O 591 * preallocation sizes. 592 */ 593 #define XFS_MAX_IO_LOG 30 /* 1G */ 594 #define XFS_MIN_IO_LOG PAGE_SHIFT 595 596 void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, 597 int lnnum); 598 #define xfs_force_shutdown(m,f) \ 599 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 600 601 #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ 602 #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ 603 #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ 604 #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ 605 #define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */ 606 #define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */ 607 608 #define XFS_SHUTDOWN_STRINGS \ 609 { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ 610 { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ 611 { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ 612 { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \ 613 { SHUTDOWN_DEVICE_REMOVED, "device_removed" } 614 615 /* 616 * Flags for xfs_mountfs 617 */ 618 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 619 620 static inline xfs_agnumber_t 621 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 622 { 623 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 624 do_div(ld, mp->m_sb.sb_agblocks); 625 return (xfs_agnumber_t) ld; 626 } 627 628 static inline xfs_agblock_t 629 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 630 { 631 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 632 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 633 } 634 635 extern void xfs_uuid_table_free(void); 636 extern uint64_t xfs_default_resblks(xfs_mount_t *mp); 637 extern int xfs_mountfs(xfs_mount_t *mp); 638 extern void xfs_unmountfs(xfs_mount_t *); 639 640 /* 641 * Deltas for the block count can vary from 1 to very large, but lock contention 642 * only occurs on frequent small block count updates such as in the delayed 643 * allocation path for buffered writes (page a time updates). Hence we set 644 * a large batch count (1024) to minimise global counter updates except when 645 * we get near to ENOSPC and we have to be very accurate with our updates. 646 */ 647 #define XFS_FDBLOCKS_BATCH 1024 648 649 /* 650 * Estimate the amount of free space that is not available to userspace and is 651 * not explicitly reserved from the incore fdblocks. This includes: 652 * 653 * - The minimum number of blocks needed to support splitting a bmap btree 654 * - The blocks currently in use by the freespace btrees because they record 655 * the actual blocks that will fill per-AG metadata space reservations 656 */ 657 static inline uint64_t 658 xfs_fdblocks_unavailable( 659 struct xfs_mount *mp) 660 { 661 return mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks); 662 } 663 664 int xfs_dec_freecounter(struct xfs_mount *mp, struct percpu_counter *counter, 665 uint64_t delta, bool rsvd); 666 void xfs_add_freecounter(struct xfs_mount *mp, struct percpu_counter *counter, 667 uint64_t delta); 668 669 static inline int xfs_dec_fdblocks(struct xfs_mount *mp, uint64_t delta, 670 bool reserved) 671 { 672 return xfs_dec_freecounter(mp, &mp->m_fdblocks, delta, reserved); 673 } 674 675 static inline void xfs_add_fdblocks(struct xfs_mount *mp, uint64_t delta) 676 { 677 xfs_add_freecounter(mp, &mp->m_fdblocks, delta); 678 } 679 680 static inline int xfs_dec_frextents(struct xfs_mount *mp, uint64_t delta) 681 { 682 return xfs_dec_freecounter(mp, &mp->m_frextents, delta, false); 683 } 684 685 static inline void xfs_add_frextents(struct xfs_mount *mp, uint64_t delta) 686 { 687 xfs_add_freecounter(mp, &mp->m_frextents, delta); 688 } 689 690 extern int xfs_readsb(xfs_mount_t *, int); 691 extern void xfs_freesb(xfs_mount_t *); 692 extern bool xfs_fs_writable(struct xfs_mount *mp, int level); 693 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); 694 695 extern int xfs_dev_is_read_only(struct xfs_mount *, char *); 696 697 extern void xfs_set_low_space_thresholds(struct xfs_mount *); 698 699 int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, 700 xfs_off_t count_fsb); 701 702 struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, 703 int error_class, int error); 704 void xfs_force_summary_recalc(struct xfs_mount *mp); 705 int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); 706 bool xfs_clear_incompat_log_features(struct xfs_mount *mp); 707 void xfs_mod_delalloc(struct xfs_inode *ip, int64_t data_delta, 708 int64_t ind_delta); 709 710 #endif /* __XFS_MOUNT_H__ */ 711