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 struct xfs_healthmon; 17 18 /* dynamic preallocation free space thresholds, 5% down to 1% */ 19 enum { 20 XFS_LOWSP_1_PCNT = 0, 21 XFS_LOWSP_2_PCNT, 22 XFS_LOWSP_3_PCNT, 23 XFS_LOWSP_4_PCNT, 24 XFS_LOWSP_5_PCNT, 25 XFS_LOWSP_MAX, 26 }; 27 28 /* 29 * Error Configuration 30 * 31 * Error classes define the subsystem the configuration belongs to. 32 * Error numbers define the errors that are configurable. 33 */ 34 enum { 35 XFS_ERR_METADATA, 36 XFS_ERR_CLASS_MAX, 37 }; 38 enum { 39 XFS_ERR_DEFAULT, 40 XFS_ERR_EIO, 41 XFS_ERR_ENOSPC, 42 XFS_ERR_ENODEV, 43 XFS_ERR_ERRNO_MAX, 44 }; 45 46 #define XFS_ERR_RETRY_FOREVER -1 47 48 /* 49 * Although retry_timeout is in jiffies which is normally an unsigned long, 50 * we limit the retry timeout to 86400 seconds, or one day. So even a 51 * signed 32-bit long is sufficient for a HZ value up to 24855. Making it 52 * signed lets us store the special "-1" value, meaning retry forever. 53 */ 54 struct xfs_error_cfg { 55 struct xfs_kobj kobj; 56 int max_retries; 57 long retry_timeout; /* in jiffies, -1 = infinite */ 58 }; 59 60 /* 61 * Per-cpu deferred inode inactivation GC lists. 62 */ 63 struct xfs_inodegc { 64 struct xfs_mount *mp; 65 struct llist_head list; 66 struct delayed_work work; 67 int error; 68 69 /* approximate count of inodes in the list */ 70 unsigned int items; 71 unsigned int shrinker_hits; 72 unsigned int cpu; 73 }; 74 75 /* 76 * Container for each type of groups, used to look up individual groups and 77 * describes the geometry. 78 */ 79 struct xfs_groups { 80 struct xarray xa; 81 82 /* 83 * Maximum capacity of the group in FSBs. 84 * 85 * Each group is laid out densely in the daddr space. For the 86 * degenerate case of a pre-rtgroups filesystem, the incore rtgroup 87 * pretends to have a zero-block and zero-blklog rtgroup. 88 */ 89 uint32_t blocks; 90 91 /* 92 * Log(2) of the logical size of each group. 93 * 94 * Compared to the blocks field above this is rounded up to the next 95 * power of two, and thus lays out the xfs_fsblock_t/xfs_rtblock_t 96 * space sparsely with a hole from blocks to (1 << blklog) at the end 97 * of each group. 98 */ 99 uint8_t blklog; 100 101 /* 102 * Zoned devices can have gaps beyond the usable capacity of a zone and 103 * the end in the LBA/daddr address space. In other words, the hardware 104 * equivalent to the RT groups already takes care of the power of 2 105 * alignment for us. In this case the sparse FSB/RTB address space maps 106 * 1:1 to the device address space. 107 */ 108 bool has_daddr_gaps; 109 110 /* 111 * Mask to extract the group-relative block number from a FSB. 112 * For a pre-rtgroups filesystem we pretend to have one very large 113 * rtgroup, so this mask must be 64-bit. 114 */ 115 uint64_t blkmask; 116 117 /* 118 * Start of the first group in the device. This is used to support a 119 * RT device following the data device on the same block device for 120 * SMR hard drives. 121 */ 122 xfs_fsblock_t start_fsb; 123 124 /* 125 * Maximum length of an atomic write for files stored in this 126 * collection of allocation groups, in fsblocks. 127 */ 128 xfs_extlen_t awu_max; 129 }; 130 131 struct xfs_freecounter { 132 /* free blocks for general use: */ 133 struct percpu_counter count; 134 135 /* total reserved blocks: */ 136 uint64_t res_total; 137 138 /* available reserved blocks: */ 139 uint64_t res_avail; 140 141 /* reserved blks @ remount,ro: */ 142 uint64_t res_saved; 143 }; 144 145 /* 146 * The struct xfsmount layout is optimised to separate read-mostly variables 147 * from variables that are frequently modified. We put the read-mostly variables 148 * first, then place all the other variables at the end. 149 * 150 * Typically, read-mostly variables are those that are set at mount time and 151 * never changed again, or only change rarely as a result of things like sysfs 152 * knobs being tweaked. 153 */ 154 typedef struct xfs_mount { 155 struct xfs_sb m_sb; /* copy of fs superblock */ 156 struct super_block *m_super; 157 struct xfs_ail *m_ail; /* fs active log item list */ 158 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 159 struct xfs_buf *m_rtsb_bp; /* realtime superblock */ 160 char *m_rtname; /* realtime device name */ 161 char *m_logname; /* external log device name */ 162 struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ 163 struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ 164 struct xlog *m_log; /* log specific stuff */ 165 struct xfs_inode *m_rootip; /* pointer to root directory */ 166 struct xfs_inode *m_metadirip; /* ptr to metadata directory */ 167 struct xfs_inode *m_rtdirip; /* ptr to realtime metadir */ 168 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 169 struct xfs_buftarg *m_ddev_targp; /* data device */ 170 struct xfs_buftarg *m_logdev_targp;/* log device */ 171 struct xfs_buftarg *m_rtdev_targp; /* rt device */ 172 void __percpu *m_inodegc; /* percpu inodegc structures */ 173 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 174 struct workqueue_struct *m_buf_workqueue; 175 struct workqueue_struct *m_unwritten_workqueue; 176 struct workqueue_struct *m_reclaim_workqueue; 177 struct workqueue_struct *m_sync_workqueue; 178 struct workqueue_struct *m_blockgc_wq; 179 struct workqueue_struct *m_inodegc_wq; 180 181 int m_bsize; /* fs logical block size */ 182 uint8_t m_blkbit_log; /* blocklog + NBBY */ 183 uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 184 uint8_t m_agno_log; /* log #ag's */ 185 uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 186 int8_t m_rtxblklog; /* log2 of rextsize, if possible */ 187 188 uint m_blockmask; /* sb_blocksize-1 */ 189 uint m_blockwsize; /* sb_blocksize in words */ 190 /* number of rt extents per rt bitmap block if rtgroups enabled */ 191 unsigned int m_rtx_per_rbmblock; 192 uint m_alloc_mxr[2]; /* max alloc btree records */ 193 uint m_alloc_mnr[2]; /* min alloc btree records */ 194 uint m_bmap_dmxr[2]; /* max bmap btree records */ 195 uint m_bmap_dmnr[2]; /* min bmap btree records */ 196 uint m_rmap_mxr[2]; /* max rmap btree records */ 197 uint m_rmap_mnr[2]; /* min rmap btree records */ 198 uint m_rtrmap_mxr[2]; /* max rtrmap btree records */ 199 uint m_rtrmap_mnr[2]; /* min rtrmap btree records */ 200 uint m_refc_mxr[2]; /* max refc btree records */ 201 uint m_refc_mnr[2]; /* min refc btree records */ 202 uint m_rtrefc_mxr[2]; /* max rtrefc btree records */ 203 uint m_rtrefc_mnr[2]; /* min rtrefc btree records */ 204 uint m_alloc_maxlevels; /* max alloc btree levels */ 205 uint m_bm_maxlevels[2]; /* max bmap btree levels */ 206 uint m_rmap_maxlevels; /* max rmap btree levels */ 207 uint m_rtrmap_maxlevels; /* max rtrmap btree level */ 208 uint m_refc_maxlevels; /* max refcount btree level */ 209 uint m_rtrefc_maxlevels; /* max rtrefc btree level */ 210 unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ 211 unsigned int m_rtbtree_maxlevels; /* max level of all rt btrees */ 212 xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ 213 uint m_alloc_set_aside; /* space we can't use */ 214 uint m_ag_max_usable; /* max space per AG */ 215 int m_dalign; /* stripe unit */ 216 int m_swidth; /* stripe width */ 217 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 218 uint m_allocsize_log;/* min write size log bytes */ 219 uint m_allocsize_blocks; /* min write size blocks */ 220 int m_logbufs; /* number of log buffers */ 221 int m_logbsize; /* size of each log buffer */ 222 unsigned int m_rsumlevels; /* rt summary levels */ 223 xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */ 224 int m_fixedfsid[2]; /* unchanged for life of FS */ 225 uint m_qflags; /* quota status flags */ 226 uint64_t m_features; /* active filesystem features */ 227 uint64_t m_low_space[XFS_LOWSP_MAX]; 228 uint64_t m_low_rtexts[XFS_LOWSP_MAX]; 229 uint64_t m_rtxblkmask; /* rt extent block mask */ 230 struct xfs_ino_geometry m_ino_geo; /* inode geometry */ 231 struct xfs_trans_resv m_resv; /* precomputed res values */ 232 /* low free space thresholds */ 233 unsigned long m_opstate; /* dynamic state flags */ 234 bool m_always_cow; 235 bool m_fail_unmount; 236 bool m_finobt_nores; /* no per-AG finobt resv. */ 237 bool m_update_sb; /* sb needs update in mount */ 238 unsigned int m_max_open_zones; 239 unsigned int m_zonegc_low_space; 240 241 /* max_atomic_write mount option value */ 242 unsigned long long m_awu_max_bytes; 243 244 /* 245 * Bitsets of per-fs metadata that have been checked and/or are sick. 246 * Callers must hold m_sb_lock to access these two fields. 247 */ 248 uint8_t m_fs_checked; 249 uint8_t m_fs_sick; 250 /* 251 * Bitsets of rt metadata that have been checked and/or are sick. 252 * Callers must hold m_sb_lock to access this field. 253 */ 254 uint8_t m_rt_checked; 255 uint8_t m_rt_sick; 256 257 /* 258 * End of read-mostly variables. Frequently written variables and locks 259 * should be placed below this comment from now on. The first variable 260 * here is marked as cacheline aligned so they it is separated from 261 * the read-mostly variables. 262 */ 263 264 spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ 265 struct percpu_counter m_icount; /* allocated inodes counter */ 266 struct percpu_counter m_ifree; /* free inodes counter */ 267 268 struct xfs_freecounter m_free[XC_FREE_NR]; 269 270 /* 271 * Count of data device blocks reserved for delayed allocations, 272 * including indlen blocks. Does not include allocated CoW staging 273 * extents or anything related to the rt device. 274 */ 275 struct percpu_counter m_delalloc_blks; 276 277 /* 278 * RT version of the above. 279 */ 280 struct percpu_counter m_delalloc_rtextents; 281 282 /* 283 * Global count of allocation btree blocks in use across all AGs. Only 284 * used when perag reservation is enabled. Helps prevent block 285 * reservation from attempting to reserve allocation btree blocks. 286 */ 287 atomic64_t m_allocbt_blks; 288 289 struct xfs_groups m_groups[XG_TYPE_MAX]; 290 struct delayed_work m_reclaim_work; /* background inode reclaim */ 291 struct xfs_zone_info *m_zone_info; /* zone allocator information */ 292 struct dentry *m_debugfs; /* debugfs parent */ 293 struct xfs_kobj m_kobj; 294 struct xfs_kobj m_error_kobj; 295 struct xfs_kobj m_error_meta_kobj; 296 struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; 297 struct xstats m_stats; /* per-fs stats */ 298 #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS 299 struct xchk_stats *m_scrub_stats; 300 #endif 301 struct xfs_kobj m_zoned_kobj; 302 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 303 atomic_t m_agirotor; /* last ag dir inode alloced */ 304 atomic_t m_rtgrotor; /* last rtgroup rtpicked */ 305 306 struct mutex m_metafile_resv_lock; 307 uint64_t m_metafile_resv_target; 308 uint64_t m_metafile_resv_used; 309 uint64_t m_metafile_resv_avail; 310 311 /* Memory shrinker to throttle and reprioritize inodegc */ 312 struct shrinker *m_inodegc_shrinker; 313 /* 314 * Workqueue item so that we can coalesce multiple inode flush attempts 315 * into a single flush. 316 */ 317 struct work_struct m_flush_inodes_work; 318 319 /* 320 * Generation of the filesysyem layout. This is incremented by each 321 * growfs, and used by the pNFS server to ensure the client updates 322 * its view of the block device once it gets a layout that might 323 * reference the newly added blocks. Does not need to be persistent 324 * as long as we only allow file system size increments, but if we 325 * ever support shrinks it would have to be persisted in addition 326 * to various other kinds of pain inflicted on the pNFS server. 327 */ 328 uint32_t m_generation; 329 struct mutex m_growlock; /* growfs mutex */ 330 331 #ifdef DEBUG 332 /* 333 * Frequency with which errors are injected. Replaces xfs_etest; the 334 * value stored in here is the inverse of the frequency with which the 335 * error triggers. 1 = always, 2 = half the time, etc. 336 */ 337 unsigned int *m_errortag; 338 struct xfs_kobj m_errortag_kobj; 339 #endif 340 341 /* cpus that have inodes queued for inactivation */ 342 struct cpumask m_inodegc_cpumask; 343 344 /* Hook to feed dirent updates to an active online repair. */ 345 struct xfs_hooks m_dir_update_hooks; 346 347 /* Private data referring to a health monitor object. */ 348 struct xfs_healthmon *m_healthmon; 349 } xfs_mount_t; 350 351 #define M_IGEO(mp) (&(mp)->m_ino_geo) 352 353 /* 354 * Flags for m_features. 355 * 356 * These are all the active features in the filesystem, regardless of how 357 * they are configured. 358 */ 359 #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ 360 #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ 361 #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ 362 #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ 363 #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ 364 #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ 365 #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ 366 #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ 367 #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ 368 #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ 369 #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ 370 #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ 371 #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ 372 #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ 373 #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ 374 #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ 375 #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ 376 #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ 377 #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ 378 #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ 379 #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ 380 #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ 381 #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ 382 #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ 383 #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ 384 #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ 385 #define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */ 386 #define XFS_FEAT_METADIR (1ULL << 28) /* metadata directory tree */ 387 #define XFS_FEAT_ZONED (1ULL << 29) /* zoned RT device */ 388 389 /* Mount features */ 390 #define XFS_FEAT_NOLIFETIME (1ULL << 47) /* disable lifetime hints */ 391 #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ 392 #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ 393 #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred 394 * I/O size in stat() */ 395 #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ 396 #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ 397 #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ 398 #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ 399 #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ 400 #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ 401 #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ 402 #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ 403 #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ 404 #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ 405 #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ 406 407 #define __XFS_HAS_FEAT(name, NAME) \ 408 static inline bool xfs_has_ ## name (const struct xfs_mount *mp) \ 409 { \ 410 return mp->m_features & XFS_FEAT_ ## NAME; \ 411 } 412 413 /* Some features can be added dynamically so they need a set wrapper, too. */ 414 #define __XFS_ADD_FEAT(name, NAME) \ 415 __XFS_HAS_FEAT(name, NAME); \ 416 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 417 { \ 418 mp->m_features |= XFS_FEAT_ ## NAME; \ 419 xfs_sb_version_add ## name(&mp->m_sb); \ 420 } 421 422 /* Superblock features */ 423 __XFS_ADD_FEAT(attr, ATTR) 424 __XFS_HAS_FEAT(nlink, NLINK) 425 __XFS_ADD_FEAT(quota, QUOTA) 426 __XFS_HAS_FEAT(dalign, DALIGN) 427 __XFS_HAS_FEAT(sector, SECTOR) 428 __XFS_HAS_FEAT(asciici, ASCIICI) 429 __XFS_HAS_FEAT(parent, PARENT) 430 __XFS_HAS_FEAT(ftype, FTYPE) 431 __XFS_HAS_FEAT(finobt, FINOBT) 432 __XFS_HAS_FEAT(rmapbt, RMAPBT) 433 __XFS_HAS_FEAT(reflink, REFLINK) 434 __XFS_HAS_FEAT(sparseinodes, SPINODES) 435 __XFS_HAS_FEAT(metauuid, META_UUID) 436 __XFS_HAS_FEAT(realtime, REALTIME) 437 __XFS_HAS_FEAT(inobtcounts, INOBTCNT) 438 __XFS_HAS_FEAT(bigtime, BIGTIME) 439 __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) 440 __XFS_HAS_FEAT(large_extent_counts, NREXT64) 441 __XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE) 442 __XFS_HAS_FEAT(metadir, METADIR) 443 __XFS_HAS_FEAT(zoned, ZONED) 444 __XFS_HAS_FEAT(nolifetime, NOLIFETIME) 445 446 static inline bool xfs_has_rtgroups(const struct xfs_mount *mp) 447 { 448 /* all metadir file systems also allow rtgroups */ 449 return xfs_has_metadir(mp); 450 } 451 452 static inline bool xfs_has_rtsb(const struct xfs_mount *mp) 453 { 454 /* all rtgroups filesystems with an rt section have an rtsb */ 455 return xfs_has_rtgroups(mp) && 456 xfs_has_realtime(mp) && 457 !xfs_has_zoned(mp); 458 } 459 460 static inline bool xfs_has_rtrmapbt(const struct xfs_mount *mp) 461 { 462 return xfs_has_rtgroups(mp) && xfs_has_realtime(mp) && 463 xfs_has_rmapbt(mp); 464 } 465 466 static inline bool xfs_has_rtreflink(const struct xfs_mount *mp) 467 { 468 return xfs_has_metadir(mp) && xfs_has_realtime(mp) && 469 xfs_has_reflink(mp); 470 } 471 472 static inline bool xfs_has_nonzoned(const struct xfs_mount *mp) 473 { 474 return !xfs_has_zoned(mp); 475 } 476 477 static inline bool xfs_can_sw_atomic_write(struct xfs_mount *mp) 478 { 479 return xfs_has_reflink(mp); 480 } 481 482 /* 483 * Some features are always on for v5 file systems, allow the compiler to 484 * eliminiate dead code when building without v4 support. 485 */ 486 #define __XFS_HAS_V4_FEAT(name, NAME) \ 487 static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ 488 { \ 489 return !IS_ENABLED(CONFIG_XFS_SUPPORT_V4) || \ 490 (mp->m_features & XFS_FEAT_ ## NAME); \ 491 } 492 493 #define __XFS_ADD_V4_FEAT(name, NAME) \ 494 __XFS_HAS_V4_FEAT(name, NAME); \ 495 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 496 { \ 497 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) { \ 498 mp->m_features |= XFS_FEAT_ ## NAME; \ 499 xfs_sb_version_add ## name(&mp->m_sb); \ 500 } \ 501 } 502 503 __XFS_HAS_V4_FEAT(align, ALIGN) 504 __XFS_HAS_V4_FEAT(logv2, LOGV2) 505 __XFS_HAS_V4_FEAT(extflg, EXTFLG) 506 __XFS_HAS_V4_FEAT(lazysbcount, LAZYSBCOUNT) 507 __XFS_ADD_V4_FEAT(projid32, PROJID32) 508 __XFS_HAS_V4_FEAT(v3inodes, V3INODES) 509 __XFS_HAS_V4_FEAT(crc, CRC) 510 __XFS_HAS_V4_FEAT(pquotino, PQUOTINO) 511 512 static inline void xfs_add_attr2(struct xfs_mount *mp) 513 { 514 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) 515 xfs_sb_version_addattr2(&mp->m_sb); 516 } 517 518 /* 519 * Mount features 520 * 521 * These do not change dynamically - features that can come and go, such as 32 522 * bit inodes and read-only state, are kept as operational state rather than 523 * features. 524 */ 525 __XFS_HAS_FEAT(noalign, NOALIGN) 526 __XFS_HAS_FEAT(allocsize, ALLOCSIZE) 527 __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) 528 __XFS_HAS_FEAT(wsync, WSYNC) 529 __XFS_HAS_FEAT(dirsync, DIRSYNC) 530 __XFS_HAS_FEAT(discard, DISCARD) 531 __XFS_HAS_FEAT(grpid, GRPID) 532 __XFS_HAS_FEAT(small_inums, SMALL_INUMS) 533 __XFS_HAS_FEAT(swalloc, SWALLOC) 534 __XFS_HAS_FEAT(filestreams, FILESTREAMS) 535 __XFS_HAS_FEAT(dax_always, DAX_ALWAYS) 536 __XFS_HAS_FEAT(dax_never, DAX_NEVER) 537 __XFS_HAS_FEAT(norecovery, NORECOVERY) 538 __XFS_HAS_FEAT(nouuid, NOUUID) 539 540 /* 541 * Operational mount state flags 542 * 543 * Use these with atomic bit ops only! 544 */ 545 #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ 546 #define XFS_OPSTATE_CLEAN 1 /* mount was clean */ 547 #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ 548 #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ 549 #define XFS_OPSTATE_READONLY 4 /* read-only fs */ 550 551 /* 552 * If set, inactivation worker threads will be scheduled to process queued 553 * inodegc work. If not, queued inodes remain in memory waiting to be 554 * processed. 555 */ 556 #define XFS_OPSTATE_INODEGC_ENABLED 5 557 /* 558 * If set, background speculative prealloc gc worker threads will be scheduled 559 * to process queued blockgc work. If not, inodes retain their preallocations 560 * until explicitly deleted. 561 */ 562 #define XFS_OPSTATE_BLOCKGC_ENABLED 6 563 564 /* Kernel has logged a warning about shrink being used on this fs. */ 565 #define XFS_OPSTATE_WARNED_SHRINK 9 566 /* Kernel has logged a warning about logged xattr updates being used. */ 567 #define XFS_OPSTATE_WARNED_LARP 10 568 /* Mount time quotacheck is running */ 569 #define XFS_OPSTATE_QUOTACHECK_RUNNING 11 570 /* Do we want to clear log incompat flags? */ 571 #define XFS_OPSTATE_UNSET_LOG_INCOMPAT 12 572 /* Filesystem can use logged extended attributes */ 573 #define XFS_OPSTATE_USE_LARP 13 574 /* Kernel has logged a warning about blocksize > pagesize on this fs. */ 575 #define XFS_OPSTATE_WARNED_LBS 14 576 /* Kernel has logged a warning about metadata dirs being used on this fs. */ 577 #define XFS_OPSTATE_WARNED_METADIR 17 578 /* Filesystem should use qflags to determine quotaon status */ 579 #define XFS_OPSTATE_RESUMING_QUOTAON 18 580 /* Kernel has logged a warning about zoned RT device being used on this fs. */ 581 #define XFS_OPSTATE_WARNED_ZONED 19 582 /* (Zoned) GC is in progress */ 583 #define XFS_OPSTATE_ZONEGC_RUNNING 20 584 585 #define __XFS_IS_OPSTATE(name, NAME) \ 586 static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ 587 { \ 588 return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 589 } \ 590 static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ 591 { \ 592 return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 593 } \ 594 static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ 595 { \ 596 return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 597 } 598 599 __XFS_IS_OPSTATE(unmounting, UNMOUNTING) 600 __XFS_IS_OPSTATE(clean, CLEAN) 601 __XFS_IS_OPSTATE(shutdown, SHUTDOWN) 602 __XFS_IS_OPSTATE(inode32, INODE32) 603 __XFS_IS_OPSTATE(readonly, READONLY) 604 __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) 605 __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) 606 #ifdef CONFIG_XFS_QUOTA 607 __XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING) 608 __XFS_IS_OPSTATE(resuming_quotaon, RESUMING_QUOTAON) 609 #else 610 static inline bool xfs_is_quotacheck_running(struct xfs_mount *mp) 611 { 612 return false; 613 } 614 static inline bool xfs_is_resuming_quotaon(struct xfs_mount *mp) 615 { 616 return false; 617 } 618 static inline void xfs_set_resuming_quotaon(struct xfs_mount *m) 619 { 620 } 621 static inline bool xfs_clear_resuming_quotaon(struct xfs_mount *mp) 622 { 623 return false; 624 } 625 #endif /* CONFIG_XFS_QUOTA */ 626 __XFS_IS_OPSTATE(done_with_log_incompat, UNSET_LOG_INCOMPAT) 627 __XFS_IS_OPSTATE(using_logged_xattrs, USE_LARP) 628 __XFS_IS_OPSTATE(zonegc_running, ZONEGC_RUNNING) 629 630 static inline bool 631 xfs_should_warn(struct xfs_mount *mp, long nr) 632 { 633 return !test_and_set_bit(nr, &mp->m_opstate); 634 } 635 636 #define XFS_OPSTATE_STRINGS \ 637 { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ 638 { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ 639 { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ 640 { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ 641 { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ 642 { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ 643 { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ 644 { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ 645 { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \ 646 { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \ 647 { (1UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \ 648 { (1UL << XFS_OPSTATE_USE_LARP), "logged_xattrs" } 649 650 /* 651 * Max and min values for mount-option defined I/O 652 * preallocation sizes. 653 */ 654 #define XFS_MAX_IO_LOG 30 /* 1G */ 655 #define XFS_MIN_IO_LOG PAGE_SHIFT 656 657 void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, 658 int lnnum); 659 #define xfs_force_shutdown(m,f) \ 660 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 661 662 #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ 663 #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ 664 #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ 665 #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ 666 #define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */ 667 #define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */ 668 669 #define XFS_SHUTDOWN_STRINGS \ 670 { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ 671 { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ 672 { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ 673 { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \ 674 { SHUTDOWN_DEVICE_REMOVED, "device_removed" } 675 676 /* 677 * Flags for xfs_mountfs 678 */ 679 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 680 681 static inline xfs_agnumber_t 682 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 683 { 684 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 685 do_div(ld, mp->m_sb.sb_agblocks); 686 return (xfs_agnumber_t) ld; 687 } 688 689 static inline xfs_agblock_t 690 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 691 { 692 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 693 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 694 } 695 696 extern void xfs_uuid_table_free(void); 697 uint64_t xfs_default_resblks(struct xfs_mount *mp, 698 enum xfs_free_counter ctr); 699 extern int xfs_mountfs(xfs_mount_t *mp); 700 extern void xfs_unmountfs(xfs_mount_t *); 701 702 /* 703 * Deltas for the block count can vary from 1 to very large, but lock contention 704 * only occurs on frequent small block count updates such as in the delayed 705 * allocation path for buffered writes (page a time updates). Hence we set 706 * a large batch count (1024) to minimise global counter updates except when 707 * we get near to ENOSPC and we have to be very accurate with our updates. 708 */ 709 #define XFS_FDBLOCKS_BATCH 1024 710 711 uint64_t xfs_freecounter_unavailable(struct xfs_mount *mp, 712 enum xfs_free_counter ctr); 713 714 /* 715 * Sum up the freecount, but never return negative values. 716 */ 717 static inline s64 xfs_sum_freecounter(struct xfs_mount *mp, 718 enum xfs_free_counter ctr) 719 { 720 return percpu_counter_sum_positive(&mp->m_free[ctr].count); 721 } 722 723 /* 724 * Same as above, but does return negative values. Mostly useful for 725 * special cases like repair and tracing. 726 */ 727 static inline s64 xfs_sum_freecounter_raw(struct xfs_mount *mp, 728 enum xfs_free_counter ctr) 729 { 730 return percpu_counter_sum(&mp->m_free[ctr].count); 731 } 732 733 /* 734 * This just provides and estimate without the cpu-local updates, use 735 * xfs_sum_freecounter for the exact value. 736 */ 737 static inline s64 xfs_estimate_freecounter(struct xfs_mount *mp, 738 enum xfs_free_counter ctr) 739 { 740 return percpu_counter_read_positive(&mp->m_free[ctr].count); 741 } 742 743 static inline int xfs_compare_freecounter(struct xfs_mount *mp, 744 enum xfs_free_counter ctr, s64 rhs, s32 batch) 745 { 746 return __percpu_counter_compare(&mp->m_free[ctr].count, rhs, batch); 747 } 748 749 static inline void xfs_set_freecounter(struct xfs_mount *mp, 750 enum xfs_free_counter ctr, uint64_t val) 751 { 752 percpu_counter_set(&mp->m_free[ctr].count, val); 753 } 754 755 int xfs_dec_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, 756 uint64_t delta, bool rsvd); 757 void xfs_add_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, 758 uint64_t delta); 759 760 static inline int xfs_dec_fdblocks(struct xfs_mount *mp, uint64_t delta, 761 bool reserved) 762 { 763 return xfs_dec_freecounter(mp, XC_FREE_BLOCKS, delta, reserved); 764 } 765 766 static inline void xfs_add_fdblocks(struct xfs_mount *mp, uint64_t delta) 767 { 768 xfs_add_freecounter(mp, XC_FREE_BLOCKS, delta); 769 } 770 771 static inline int xfs_dec_frextents(struct xfs_mount *mp, uint64_t delta) 772 { 773 return xfs_dec_freecounter(mp, XC_FREE_RTEXTENTS, delta, false); 774 } 775 776 static inline void xfs_add_frextents(struct xfs_mount *mp, uint64_t delta) 777 { 778 xfs_add_freecounter(mp, XC_FREE_RTEXTENTS, delta); 779 } 780 781 extern int xfs_readsb(xfs_mount_t *, int); 782 extern void xfs_freesb(xfs_mount_t *); 783 extern bool xfs_fs_writable(struct xfs_mount *mp, int level); 784 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); 785 786 extern int xfs_dev_is_read_only(struct xfs_mount *, char *); 787 788 extern void xfs_set_low_space_thresholds(struct xfs_mount *); 789 790 int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, 791 xfs_off_t count_fsb); 792 793 struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, 794 int error_class, int error); 795 void xfs_force_summary_recalc(struct xfs_mount *mp); 796 int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); 797 bool xfs_clear_incompat_log_features(struct xfs_mount *mp); 798 void xfs_mod_delalloc(struct xfs_inode *ip, int64_t data_delta, 799 int64_t ind_delta); 800 static inline void xfs_mod_sb_delalloc(struct xfs_mount *mp, int64_t delta) 801 { 802 percpu_counter_add(&mp->m_delalloc_blks, delta); 803 } 804 805 int xfs_set_max_atomic_write_opt(struct xfs_mount *mp, 806 unsigned long long new_max_bytes); 807 808 static inline struct xfs_buftarg * 809 xfs_group_type_buftarg( 810 struct xfs_mount *mp, 811 enum xfs_group_type type) 812 { 813 switch (type) { 814 case XG_TYPE_AG: 815 return mp->m_ddev_targp; 816 case XG_TYPE_RTG: 817 return mp->m_rtdev_targp; 818 default: 819 ASSERT(0); 820 break; 821 } 822 return NULL; 823 } 824 825 #endif /* __XFS_MOUNT_H__ */ 826