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 * Zoned devices can have gaps beyond the usable capacity of a zone and 102 * the end in the LBA/daddr address space. In other words, the hardware 103 * equivalent to the RT groups already takes care of the power of 2 104 * alignment for us. In this case the sparse FSB/RTB address space maps 105 * 1:1 to the device address space. 106 */ 107 bool has_daddr_gaps; 108 109 /* 110 * Mask to extract the group-relative block number from a FSB. 111 * For a pre-rtgroups filesystem we pretend to have one very large 112 * rtgroup, so this mask must be 64-bit. 113 */ 114 uint64_t blkmask; 115 116 /* 117 * Start of the first group in the device. This is used to support a 118 * RT device following the data device on the same block device for 119 * SMR hard drives. 120 */ 121 xfs_fsblock_t start_fsb; 122 }; 123 124 struct xfs_freecounter { 125 /* free blocks for general use: */ 126 struct percpu_counter count; 127 128 /* total reserved blocks: */ 129 uint64_t res_total; 130 131 /* available reserved blocks: */ 132 uint64_t res_avail; 133 134 /* reserved blks @ remount,ro: */ 135 uint64_t res_saved; 136 }; 137 138 /* 139 * The struct xfsmount layout is optimised to separate read-mostly variables 140 * from variables that are frequently modified. We put the read-mostly variables 141 * first, then place all the other variables at the end. 142 * 143 * Typically, read-mostly variables are those that are set at mount time and 144 * never changed again, or only change rarely as a result of things like sysfs 145 * knobs being tweaked. 146 */ 147 typedef struct xfs_mount { 148 struct xfs_sb m_sb; /* copy of fs superblock */ 149 struct super_block *m_super; 150 struct xfs_ail *m_ail; /* fs active log item list */ 151 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 152 struct xfs_buf *m_rtsb_bp; /* realtime superblock */ 153 char *m_rtname; /* realtime device name */ 154 char *m_logname; /* external log device name */ 155 struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ 156 struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ 157 struct xlog *m_log; /* log specific stuff */ 158 struct xfs_inode *m_rootip; /* pointer to root directory */ 159 struct xfs_inode *m_metadirip; /* ptr to metadata directory */ 160 struct xfs_inode *m_rtdirip; /* ptr to realtime metadir */ 161 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 162 struct xfs_buftarg *m_ddev_targp; /* data device */ 163 struct xfs_buftarg *m_logdev_targp;/* log device */ 164 struct xfs_buftarg *m_rtdev_targp; /* rt device */ 165 void __percpu *m_inodegc; /* percpu inodegc structures */ 166 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 167 struct workqueue_struct *m_buf_workqueue; 168 struct workqueue_struct *m_unwritten_workqueue; 169 struct workqueue_struct *m_reclaim_workqueue; 170 struct workqueue_struct *m_sync_workqueue; 171 struct workqueue_struct *m_blockgc_wq; 172 struct workqueue_struct *m_inodegc_wq; 173 174 int m_bsize; /* fs logical block size */ 175 uint8_t m_blkbit_log; /* blocklog + NBBY */ 176 uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 177 uint8_t m_agno_log; /* log #ag's */ 178 uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 179 int8_t m_rtxblklog; /* log2 of rextsize, if possible */ 180 181 uint m_blockmask; /* sb_blocksize-1 */ 182 uint m_blockwsize; /* sb_blocksize in words */ 183 /* number of rt extents per rt bitmap block if rtgroups enabled */ 184 unsigned int m_rtx_per_rbmblock; 185 uint m_alloc_mxr[2]; /* max alloc btree records */ 186 uint m_alloc_mnr[2]; /* min alloc btree records */ 187 uint m_bmap_dmxr[2]; /* max bmap btree records */ 188 uint m_bmap_dmnr[2]; /* min bmap btree records */ 189 uint m_rmap_mxr[2]; /* max rmap btree records */ 190 uint m_rmap_mnr[2]; /* min rmap btree records */ 191 uint m_rtrmap_mxr[2]; /* max rtrmap btree records */ 192 uint m_rtrmap_mnr[2]; /* min rtrmap btree records */ 193 uint m_refc_mxr[2]; /* max refc btree records */ 194 uint m_refc_mnr[2]; /* min refc btree records */ 195 uint m_rtrefc_mxr[2]; /* max rtrefc btree records */ 196 uint m_rtrefc_mnr[2]; /* min rtrefc btree records */ 197 uint m_alloc_maxlevels; /* max alloc btree levels */ 198 uint m_bm_maxlevels[2]; /* max bmap btree levels */ 199 uint m_rmap_maxlevels; /* max rmap btree levels */ 200 uint m_rtrmap_maxlevels; /* max rtrmap btree level */ 201 uint m_refc_maxlevels; /* max refcount btree level */ 202 uint m_rtrefc_maxlevels; /* max rtrefc btree level */ 203 unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ 204 unsigned int m_rtbtree_maxlevels; /* max level of all rt btrees */ 205 xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ 206 uint m_alloc_set_aside; /* space we can't use */ 207 uint m_ag_max_usable; /* max space per AG */ 208 int m_dalign; /* stripe unit */ 209 int m_swidth; /* stripe width */ 210 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 211 uint m_allocsize_log;/* min write size log bytes */ 212 uint m_allocsize_blocks; /* min write size blocks */ 213 int m_logbufs; /* number of log buffers */ 214 int m_logbsize; /* size of each log buffer */ 215 unsigned int m_rsumlevels; /* rt summary levels */ 216 xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */ 217 int m_fixedfsid[2]; /* unchanged for life of FS */ 218 uint m_qflags; /* quota status flags */ 219 uint64_t m_features; /* active filesystem features */ 220 uint64_t m_low_space[XFS_LOWSP_MAX]; 221 uint64_t m_low_rtexts[XFS_LOWSP_MAX]; 222 uint64_t m_rtxblkmask; /* rt extent block mask */ 223 struct xfs_ino_geometry m_ino_geo; /* inode geometry */ 224 struct xfs_trans_resv m_resv; /* precomputed res values */ 225 /* low free space thresholds */ 226 unsigned long m_opstate; /* dynamic state flags */ 227 bool m_always_cow; 228 bool m_fail_unmount; 229 bool m_finobt_nores; /* no per-AG finobt resv. */ 230 bool m_update_sb; /* sb needs update in mount */ 231 unsigned int m_max_open_zones; 232 unsigned int m_zonegc_low_space; 233 234 /* 235 * Bitsets of per-fs metadata that have been checked and/or are sick. 236 * Callers must hold m_sb_lock to access these two fields. 237 */ 238 uint8_t m_fs_checked; 239 uint8_t m_fs_sick; 240 /* 241 * Bitsets of rt metadata that have been checked and/or are sick. 242 * Callers must hold m_sb_lock to access this field. 243 */ 244 uint8_t m_rt_checked; 245 uint8_t m_rt_sick; 246 247 /* 248 * End of read-mostly variables. Frequently written variables and locks 249 * should be placed below this comment from now on. The first variable 250 * here is marked as cacheline aligned so they it is separated from 251 * the read-mostly variables. 252 */ 253 254 spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ 255 struct percpu_counter m_icount; /* allocated inodes counter */ 256 struct percpu_counter m_ifree; /* free inodes counter */ 257 258 struct xfs_freecounter m_free[XC_FREE_NR]; 259 260 /* 261 * Count of data device blocks reserved for delayed allocations, 262 * including indlen blocks. Does not include allocated CoW staging 263 * extents or anything related to the rt device. 264 */ 265 struct percpu_counter m_delalloc_blks; 266 267 /* 268 * RT version of the above. 269 */ 270 struct percpu_counter m_delalloc_rtextents; 271 272 /* 273 * Global count of allocation btree blocks in use across all AGs. Only 274 * used when perag reservation is enabled. Helps prevent block 275 * reservation from attempting to reserve allocation btree blocks. 276 */ 277 atomic64_t m_allocbt_blks; 278 279 struct xfs_groups m_groups[XG_TYPE_MAX]; 280 struct delayed_work m_reclaim_work; /* background inode reclaim */ 281 struct xfs_zone_info *m_zone_info; /* zone allocator information */ 282 struct dentry *m_debugfs; /* debugfs parent */ 283 struct xfs_kobj m_kobj; 284 struct xfs_kobj m_error_kobj; 285 struct xfs_kobj m_error_meta_kobj; 286 struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; 287 struct xstats m_stats; /* per-fs stats */ 288 #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS 289 struct xchk_stats *m_scrub_stats; 290 #endif 291 struct xfs_kobj m_zoned_kobj; 292 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 293 atomic_t m_agirotor; /* last ag dir inode alloced */ 294 atomic_t m_rtgrotor; /* last rtgroup rtpicked */ 295 296 struct mutex m_metafile_resv_lock; 297 uint64_t m_metafile_resv_target; 298 uint64_t m_metafile_resv_used; 299 uint64_t m_metafile_resv_avail; 300 301 /* Memory shrinker to throttle and reprioritize inodegc */ 302 struct shrinker *m_inodegc_shrinker; 303 /* 304 * Workqueue item so that we can coalesce multiple inode flush attempts 305 * into a single flush. 306 */ 307 struct work_struct m_flush_inodes_work; 308 309 /* 310 * Generation of the filesysyem layout. This is incremented by each 311 * growfs, and used by the pNFS server to ensure the client updates 312 * its view of the block device once it gets a layout that might 313 * reference the newly added blocks. Does not need to be persistent 314 * as long as we only allow file system size increments, but if we 315 * ever support shrinks it would have to be persisted in addition 316 * to various other kinds of pain inflicted on the pNFS server. 317 */ 318 uint32_t m_generation; 319 struct mutex m_growlock; /* growfs mutex */ 320 321 #ifdef DEBUG 322 /* 323 * Frequency with which errors are injected. Replaces xfs_etest; the 324 * value stored in here is the inverse of the frequency with which the 325 * error triggers. 1 = always, 2 = half the time, etc. 326 */ 327 unsigned int *m_errortag; 328 struct xfs_kobj m_errortag_kobj; 329 #endif 330 331 /* cpus that have inodes queued for inactivation */ 332 struct cpumask m_inodegc_cpumask; 333 334 /* Hook to feed dirent updates to an active online repair. */ 335 struct xfs_hooks m_dir_update_hooks; 336 } xfs_mount_t; 337 338 #define M_IGEO(mp) (&(mp)->m_ino_geo) 339 340 /* 341 * Flags for m_features. 342 * 343 * These are all the active features in the filesystem, regardless of how 344 * they are configured. 345 */ 346 #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ 347 #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ 348 #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ 349 #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ 350 #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ 351 #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ 352 #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ 353 #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ 354 #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ 355 #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ 356 #define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */ 357 #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ 358 #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ 359 #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ 360 #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ 361 #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ 362 #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ 363 #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ 364 #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ 365 #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ 366 #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ 367 #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ 368 #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ 369 #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ 370 #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ 371 #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ 372 #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ 373 #define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */ 374 #define XFS_FEAT_METADIR (1ULL << 28) /* metadata directory tree */ 375 #define XFS_FEAT_ZONED (1ULL << 29) /* zoned RT device */ 376 377 /* Mount features */ 378 #define XFS_FEAT_NOLIFETIME (1ULL << 47) /* disable lifetime hints */ 379 #define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */ 380 #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ 381 #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ 382 #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred 383 * I/O size in stat() */ 384 #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ 385 #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ 386 #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ 387 #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ 388 #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ 389 #define XFS_FEAT_IKEEP (1ULL << 57) /* keep empty inode clusters*/ 390 #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ 391 #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ 392 #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ 393 #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ 394 #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ 395 #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ 396 397 #define __XFS_HAS_FEAT(name, NAME) \ 398 static inline bool xfs_has_ ## name (const struct xfs_mount *mp) \ 399 { \ 400 return mp->m_features & XFS_FEAT_ ## NAME; \ 401 } 402 403 /* Some features can be added dynamically so they need a set wrapper, too. */ 404 #define __XFS_ADD_FEAT(name, NAME) \ 405 __XFS_HAS_FEAT(name, NAME); \ 406 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 407 { \ 408 mp->m_features |= XFS_FEAT_ ## NAME; \ 409 xfs_sb_version_add ## name(&mp->m_sb); \ 410 } 411 412 /* Superblock features */ 413 __XFS_ADD_FEAT(attr, ATTR) 414 __XFS_HAS_FEAT(nlink, NLINK) 415 __XFS_ADD_FEAT(quota, QUOTA) 416 __XFS_HAS_FEAT(dalign, DALIGN) 417 __XFS_HAS_FEAT(sector, SECTOR) 418 __XFS_HAS_FEAT(asciici, ASCIICI) 419 __XFS_HAS_FEAT(parent, PARENT) 420 __XFS_HAS_FEAT(ftype, FTYPE) 421 __XFS_HAS_FEAT(finobt, FINOBT) 422 __XFS_HAS_FEAT(rmapbt, RMAPBT) 423 __XFS_HAS_FEAT(reflink, REFLINK) 424 __XFS_HAS_FEAT(sparseinodes, SPINODES) 425 __XFS_HAS_FEAT(metauuid, META_UUID) 426 __XFS_HAS_FEAT(realtime, REALTIME) 427 __XFS_HAS_FEAT(inobtcounts, INOBTCNT) 428 __XFS_HAS_FEAT(bigtime, BIGTIME) 429 __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) 430 __XFS_HAS_FEAT(large_extent_counts, NREXT64) 431 __XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE) 432 __XFS_HAS_FEAT(metadir, METADIR) 433 __XFS_HAS_FEAT(zoned, ZONED) 434 __XFS_HAS_FEAT(nolifetime, NOLIFETIME) 435 436 static inline bool xfs_has_rtgroups(const struct xfs_mount *mp) 437 { 438 /* all metadir file systems also allow rtgroups */ 439 return xfs_has_metadir(mp); 440 } 441 442 static inline bool xfs_has_rtsb(const struct xfs_mount *mp) 443 { 444 /* all rtgroups filesystems with an rt section have an rtsb */ 445 return xfs_has_rtgroups(mp) && 446 xfs_has_realtime(mp) && 447 !xfs_has_zoned(mp); 448 } 449 450 static inline bool xfs_has_rtrmapbt(const struct xfs_mount *mp) 451 { 452 return xfs_has_rtgroups(mp) && xfs_has_realtime(mp) && 453 xfs_has_rmapbt(mp); 454 } 455 456 static inline bool xfs_has_rtreflink(const struct xfs_mount *mp) 457 { 458 return xfs_has_metadir(mp) && xfs_has_realtime(mp) && 459 xfs_has_reflink(mp); 460 } 461 462 static inline bool xfs_has_nonzoned(const struct xfs_mount *mp) 463 { 464 return !xfs_has_zoned(mp); 465 } 466 467 /* 468 * Some features are always on for v5 file systems, allow the compiler to 469 * eliminiate dead code when building without v4 support. 470 */ 471 #define __XFS_HAS_V4_FEAT(name, NAME) \ 472 static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ 473 { \ 474 return !IS_ENABLED(CONFIG_XFS_SUPPORT_V4) || \ 475 (mp->m_features & XFS_FEAT_ ## NAME); \ 476 } 477 478 #define __XFS_ADD_V4_FEAT(name, NAME) \ 479 __XFS_HAS_V4_FEAT(name, NAME); \ 480 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 481 { \ 482 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) { \ 483 mp->m_features |= XFS_FEAT_ ## NAME; \ 484 xfs_sb_version_add ## name(&mp->m_sb); \ 485 } \ 486 } 487 488 __XFS_HAS_V4_FEAT(align, ALIGN) 489 __XFS_HAS_V4_FEAT(logv2, LOGV2) 490 __XFS_HAS_V4_FEAT(extflg, EXTFLG) 491 __XFS_HAS_V4_FEAT(lazysbcount, LAZYSBCOUNT) 492 __XFS_ADD_V4_FEAT(attr2, ATTR2) 493 __XFS_ADD_V4_FEAT(projid32, PROJID32) 494 __XFS_HAS_V4_FEAT(v3inodes, V3INODES) 495 __XFS_HAS_V4_FEAT(crc, CRC) 496 __XFS_HAS_V4_FEAT(pquotino, PQUOTINO) 497 498 /* 499 * Mount features 500 * 501 * These do not change dynamically - features that can come and go, such as 32 502 * bit inodes and read-only state, are kept as operational state rather than 503 * features. 504 */ 505 __XFS_HAS_FEAT(noattr2, NOATTR2) 506 __XFS_HAS_FEAT(noalign, NOALIGN) 507 __XFS_HAS_FEAT(allocsize, ALLOCSIZE) 508 __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) 509 __XFS_HAS_FEAT(wsync, WSYNC) 510 __XFS_HAS_FEAT(dirsync, DIRSYNC) 511 __XFS_HAS_FEAT(discard, DISCARD) 512 __XFS_HAS_FEAT(grpid, GRPID) 513 __XFS_HAS_FEAT(small_inums, SMALL_INUMS) 514 __XFS_HAS_FEAT(ikeep, IKEEP) 515 __XFS_HAS_FEAT(swalloc, SWALLOC) 516 __XFS_HAS_FEAT(filestreams, FILESTREAMS) 517 __XFS_HAS_FEAT(dax_always, DAX_ALWAYS) 518 __XFS_HAS_FEAT(dax_never, DAX_NEVER) 519 __XFS_HAS_FEAT(norecovery, NORECOVERY) 520 __XFS_HAS_FEAT(nouuid, NOUUID) 521 522 /* 523 * Operational mount state flags 524 * 525 * Use these with atomic bit ops only! 526 */ 527 #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ 528 #define XFS_OPSTATE_CLEAN 1 /* mount was clean */ 529 #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ 530 #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ 531 #define XFS_OPSTATE_READONLY 4 /* read-only fs */ 532 533 /* 534 * If set, inactivation worker threads will be scheduled to process queued 535 * inodegc work. If not, queued inodes remain in memory waiting to be 536 * processed. 537 */ 538 #define XFS_OPSTATE_INODEGC_ENABLED 5 539 /* 540 * If set, background speculative prealloc gc worker threads will be scheduled 541 * to process queued blockgc work. If not, inodes retain their preallocations 542 * until explicitly deleted. 543 */ 544 #define XFS_OPSTATE_BLOCKGC_ENABLED 6 545 546 /* Kernel has logged a warning about pNFS being used on this fs. */ 547 #define XFS_OPSTATE_WARNED_PNFS 7 548 /* Kernel has logged a warning about online fsck being used on this fs. */ 549 #define XFS_OPSTATE_WARNED_SCRUB 8 550 /* Kernel has logged a warning about shrink being used on this fs. */ 551 #define XFS_OPSTATE_WARNED_SHRINK 9 552 /* Kernel has logged a warning about logged xattr updates being used. */ 553 #define XFS_OPSTATE_WARNED_LARP 10 554 /* Mount time quotacheck is running */ 555 #define XFS_OPSTATE_QUOTACHECK_RUNNING 11 556 /* Do we want to clear log incompat flags? */ 557 #define XFS_OPSTATE_UNSET_LOG_INCOMPAT 12 558 /* Filesystem can use logged extended attributes */ 559 #define XFS_OPSTATE_USE_LARP 13 560 /* Kernel has logged a warning about blocksize > pagesize on this fs. */ 561 #define XFS_OPSTATE_WARNED_LBS 14 562 /* Kernel has logged a warning about exchange-range being used on this fs. */ 563 #define XFS_OPSTATE_WARNED_EXCHRANGE 15 564 /* Kernel has logged a warning about parent pointers being used on this fs. */ 565 #define XFS_OPSTATE_WARNED_PPTR 16 566 /* Kernel has logged a warning about metadata dirs being used on this fs. */ 567 #define XFS_OPSTATE_WARNED_METADIR 17 568 /* Filesystem should use qflags to determine quotaon status */ 569 #define XFS_OPSTATE_RESUMING_QUOTAON 18 570 /* Kernel has logged a warning about zoned RT device being used on this fs. */ 571 #define XFS_OPSTATE_WARNED_ZONED 19 572 /* (Zoned) GC is in progress */ 573 #define XFS_OPSTATE_ZONEGC_RUNNING 20 574 575 #define __XFS_IS_OPSTATE(name, NAME) \ 576 static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ 577 { \ 578 return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 579 } \ 580 static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ 581 { \ 582 return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 583 } \ 584 static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ 585 { \ 586 return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 587 } 588 589 __XFS_IS_OPSTATE(unmounting, UNMOUNTING) 590 __XFS_IS_OPSTATE(clean, CLEAN) 591 __XFS_IS_OPSTATE(shutdown, SHUTDOWN) 592 __XFS_IS_OPSTATE(inode32, INODE32) 593 __XFS_IS_OPSTATE(readonly, READONLY) 594 __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) 595 __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) 596 #ifdef CONFIG_XFS_QUOTA 597 __XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING) 598 __XFS_IS_OPSTATE(resuming_quotaon, RESUMING_QUOTAON) 599 #else 600 static inline bool xfs_is_quotacheck_running(struct xfs_mount *mp) 601 { 602 return false; 603 } 604 static inline bool xfs_is_resuming_quotaon(struct xfs_mount *mp) 605 { 606 return false; 607 } 608 static inline void xfs_set_resuming_quotaon(struct xfs_mount *m) 609 { 610 } 611 static inline bool xfs_clear_resuming_quotaon(struct xfs_mount *mp) 612 { 613 return false; 614 } 615 #endif /* CONFIG_XFS_QUOTA */ 616 __XFS_IS_OPSTATE(done_with_log_incompat, UNSET_LOG_INCOMPAT) 617 __XFS_IS_OPSTATE(using_logged_xattrs, USE_LARP) 618 __XFS_IS_OPSTATE(zonegc_running, ZONEGC_RUNNING) 619 620 static inline bool 621 xfs_should_warn(struct xfs_mount *mp, long nr) 622 { 623 return !test_and_set_bit(nr, &mp->m_opstate); 624 } 625 626 #define XFS_OPSTATE_STRINGS \ 627 { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ 628 { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ 629 { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ 630 { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ 631 { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ 632 { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ 633 { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ 634 { (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \ 635 { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ 636 { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \ 637 { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \ 638 { (1UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \ 639 { (1UL << XFS_OPSTATE_USE_LARP), "logged_xattrs" } 640 641 /* 642 * Max and min values for mount-option defined I/O 643 * preallocation sizes. 644 */ 645 #define XFS_MAX_IO_LOG 30 /* 1G */ 646 #define XFS_MIN_IO_LOG PAGE_SHIFT 647 648 void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, 649 int lnnum); 650 #define xfs_force_shutdown(m,f) \ 651 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 652 653 #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ 654 #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ 655 #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ 656 #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ 657 #define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */ 658 #define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */ 659 660 #define XFS_SHUTDOWN_STRINGS \ 661 { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ 662 { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ 663 { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ 664 { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \ 665 { SHUTDOWN_DEVICE_REMOVED, "device_removed" } 666 667 /* 668 * Flags for xfs_mountfs 669 */ 670 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 671 672 static inline xfs_agnumber_t 673 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 674 { 675 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 676 do_div(ld, mp->m_sb.sb_agblocks); 677 return (xfs_agnumber_t) ld; 678 } 679 680 static inline xfs_agblock_t 681 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 682 { 683 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 684 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 685 } 686 687 extern void xfs_uuid_table_free(void); 688 uint64_t xfs_default_resblks(struct xfs_mount *mp, 689 enum xfs_free_counter ctr); 690 extern int xfs_mountfs(xfs_mount_t *mp); 691 extern void xfs_unmountfs(xfs_mount_t *); 692 693 /* 694 * Deltas for the block count can vary from 1 to very large, but lock contention 695 * only occurs on frequent small block count updates such as in the delayed 696 * allocation path for buffered writes (page a time updates). Hence we set 697 * a large batch count (1024) to minimise global counter updates except when 698 * we get near to ENOSPC and we have to be very accurate with our updates. 699 */ 700 #define XFS_FDBLOCKS_BATCH 1024 701 702 uint64_t xfs_freecounter_unavailable(struct xfs_mount *mp, 703 enum xfs_free_counter ctr); 704 705 /* 706 * Sum up the freecount, but never return negative values. 707 */ 708 static inline s64 xfs_sum_freecounter(struct xfs_mount *mp, 709 enum xfs_free_counter ctr) 710 { 711 return percpu_counter_sum_positive(&mp->m_free[ctr].count); 712 } 713 714 /* 715 * Same as above, but does return negative values. Mostly useful for 716 * special cases like repair and tracing. 717 */ 718 static inline s64 xfs_sum_freecounter_raw(struct xfs_mount *mp, 719 enum xfs_free_counter ctr) 720 { 721 return percpu_counter_sum(&mp->m_free[ctr].count); 722 } 723 724 /* 725 * This just provides and estimate without the cpu-local updates, use 726 * xfs_sum_freecounter for the exact value. 727 */ 728 static inline s64 xfs_estimate_freecounter(struct xfs_mount *mp, 729 enum xfs_free_counter ctr) 730 { 731 return percpu_counter_read_positive(&mp->m_free[ctr].count); 732 } 733 734 static inline int xfs_compare_freecounter(struct xfs_mount *mp, 735 enum xfs_free_counter ctr, s64 rhs, s32 batch) 736 { 737 return __percpu_counter_compare(&mp->m_free[ctr].count, rhs, batch); 738 } 739 740 static inline void xfs_set_freecounter(struct xfs_mount *mp, 741 enum xfs_free_counter ctr, uint64_t val) 742 { 743 percpu_counter_set(&mp->m_free[ctr].count, val); 744 } 745 746 int xfs_dec_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, 747 uint64_t delta, bool rsvd); 748 void xfs_add_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, 749 uint64_t delta); 750 751 static inline int xfs_dec_fdblocks(struct xfs_mount *mp, uint64_t delta, 752 bool reserved) 753 { 754 return xfs_dec_freecounter(mp, XC_FREE_BLOCKS, delta, reserved); 755 } 756 757 static inline void xfs_add_fdblocks(struct xfs_mount *mp, uint64_t delta) 758 { 759 xfs_add_freecounter(mp, XC_FREE_BLOCKS, delta); 760 } 761 762 static inline int xfs_dec_frextents(struct xfs_mount *mp, uint64_t delta) 763 { 764 return xfs_dec_freecounter(mp, XC_FREE_RTEXTENTS, delta, false); 765 } 766 767 static inline void xfs_add_frextents(struct xfs_mount *mp, uint64_t delta) 768 { 769 xfs_add_freecounter(mp, XC_FREE_RTEXTENTS, delta); 770 } 771 772 extern int xfs_readsb(xfs_mount_t *, int); 773 extern void xfs_freesb(xfs_mount_t *); 774 extern bool xfs_fs_writable(struct xfs_mount *mp, int level); 775 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); 776 777 extern int xfs_dev_is_read_only(struct xfs_mount *, char *); 778 779 extern void xfs_set_low_space_thresholds(struct xfs_mount *); 780 781 int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, 782 xfs_off_t count_fsb); 783 784 struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, 785 int error_class, int error); 786 void xfs_force_summary_recalc(struct xfs_mount *mp); 787 int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); 788 bool xfs_clear_incompat_log_features(struct xfs_mount *mp); 789 void xfs_mod_delalloc(struct xfs_inode *ip, int64_t data_delta, 790 int64_t ind_delta); 791 static inline void xfs_mod_sb_delalloc(struct xfs_mount *mp, int64_t delta) 792 { 793 percpu_counter_add(&mp->m_delalloc_blks, delta); 794 } 795 796 #endif /* __XFS_MOUNT_H__ */ 797