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