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