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 enum xfs_read_bounce { 146 XFS_READ_BOUNCE_NEVER, 147 XFS_READ_BOUNCE_ALWAYS, 148 XFS_READ_BOUNCE_LAZY, 149 }; 150 151 /* 152 * The struct xfsmount layout is optimised to separate read-mostly variables 153 * from variables that are frequently modified. We put the read-mostly variables 154 * first, then place all the other variables at the end. 155 * 156 * Typically, read-mostly variables are those that are set at mount time and 157 * never changed again, or only change rarely as a result of things like sysfs 158 * knobs being tweaked. 159 */ 160 typedef struct xfs_mount { 161 struct xfs_sb m_sb; /* copy of fs superblock */ 162 struct super_block *m_super; 163 struct xfs_ail *m_ail; /* fs active log item list */ 164 struct xfs_buf *m_sb_bp; /* buffer for superblock */ 165 struct xfs_buf *m_rtsb_bp; /* realtime superblock */ 166 char *m_rtname; /* realtime device name */ 167 char *m_logname; /* external log device name */ 168 struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ 169 struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ 170 struct xlog *m_log; /* log specific stuff */ 171 struct xfs_inode *m_rootip; /* pointer to root directory */ 172 struct xfs_inode *m_metadirip; /* ptr to metadata directory */ 173 struct xfs_inode *m_rtdirip; /* ptr to realtime metadir */ 174 struct xfs_quotainfo *m_quotainfo; /* disk quota information */ 175 struct xfs_buftarg *m_ddev_targp; /* data device */ 176 struct xfs_buftarg *m_logdev_targp;/* log device */ 177 struct xfs_buftarg *m_rtdev_targp; /* rt device */ 178 void __percpu *m_inodegc; /* percpu inodegc structures */ 179 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ 180 struct workqueue_struct *m_buf_workqueue; 181 struct workqueue_struct *m_unwritten_workqueue; 182 struct workqueue_struct *m_reclaim_workqueue; 183 struct workqueue_struct *m_sync_workqueue; 184 struct workqueue_struct *m_blockgc_wq; 185 struct workqueue_struct *m_inodegc_wq; 186 enum xfs_read_bounce m_read_bounce; 187 188 int m_bsize; /* fs logical block size */ 189 uint8_t m_blkbit_log; /* blocklog + NBBY */ 190 uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ 191 uint8_t m_agno_log; /* log #ag's */ 192 uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ 193 int8_t m_rtxblklog; /* log2 of rextsize, if possible */ 194 195 uint m_blockmask; /* sb_blocksize-1 */ 196 uint m_blockwsize; /* sb_blocksize in words */ 197 /* number of rt extents per rt bitmap block if rtgroups enabled */ 198 unsigned int m_rtx_per_rbmblock; 199 uint m_alloc_mxr[2]; /* max alloc btree records */ 200 uint m_alloc_mnr[2]; /* min alloc btree records */ 201 uint m_bmap_dmxr[2]; /* max bmap btree records */ 202 uint m_bmap_dmnr[2]; /* min bmap btree records */ 203 uint m_rmap_mxr[2]; /* max rmap btree records */ 204 uint m_rmap_mnr[2]; /* min rmap btree records */ 205 uint m_rtrmap_mxr[2]; /* max rtrmap btree records */ 206 uint m_rtrmap_mnr[2]; /* min rtrmap btree records */ 207 uint m_refc_mxr[2]; /* max refc btree records */ 208 uint m_refc_mnr[2]; /* min refc btree records */ 209 uint m_rtrefc_mxr[2]; /* max rtrefc btree records */ 210 uint m_rtrefc_mnr[2]; /* min rtrefc btree records */ 211 uint m_alloc_maxlevels; /* max alloc btree levels */ 212 uint m_bm_maxlevels[2]; /* max bmap btree levels */ 213 uint m_rmap_maxlevels; /* max rmap btree levels */ 214 uint m_rtrmap_maxlevels; /* max rtrmap btree level */ 215 uint m_refc_maxlevels; /* max refcount btree level */ 216 uint m_rtrefc_maxlevels; /* max rtrefc btree level */ 217 unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ 218 unsigned int m_rtbtree_maxlevels; /* max level of all rt btrees */ 219 xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ 220 uint m_alloc_set_aside; /* space we can't use */ 221 uint m_ag_max_usable; /* max space per AG */ 222 int m_dalign; /* stripe unit */ 223 int m_swidth; /* stripe width */ 224 xfs_agnumber_t m_maxagi; /* highest inode alloc group */ 225 uint m_allocsize_log;/* min write size log bytes */ 226 uint m_allocsize_blocks; /* min write size blocks */ 227 int m_logbufs; /* number of log buffers */ 228 int m_logbsize; /* size of each log buffer */ 229 unsigned int m_rsumlevels; /* rt summary levels */ 230 xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */ 231 int m_fixedfsid[2]; /* unchanged for life of FS */ 232 uint m_qflags; /* quota status flags */ 233 uint64_t m_features; /* active filesystem features */ 234 uint64_t m_low_space[XFS_LOWSP_MAX]; 235 uint64_t m_low_rtexts[XFS_LOWSP_MAX]; 236 uint64_t m_rtxblkmask; /* rt extent block mask */ 237 struct xfs_ino_geometry m_ino_geo; /* inode geometry */ 238 struct xfs_trans_resv m_resv; /* precomputed res values */ 239 /* low free space thresholds */ 240 unsigned long m_opstate; /* dynamic state flags */ 241 bool m_always_cow; 242 bool m_fail_unmount; 243 bool m_finobt_nores; /* no per-AG finobt resv. */ 244 bool m_update_sb; /* sb needs update in mount */ 245 unsigned int m_max_open_zones; 246 unsigned int m_zonegc_low_space; 247 248 /* max_atomic_write mount option value */ 249 unsigned long long m_awu_max_bytes; 250 251 /* 252 * Bitsets of per-fs metadata that have been checked and/or are sick. 253 * Callers must hold m_sb_lock to access these two fields. 254 */ 255 uint8_t m_fs_checked; 256 uint8_t m_fs_sick; 257 /* 258 * Bitsets of rt metadata that have been checked and/or are sick. 259 * Callers must hold m_sb_lock to access this field. 260 */ 261 uint8_t m_rt_checked; 262 uint8_t m_rt_sick; 263 264 /* 265 * End of read-mostly variables. Frequently written variables and locks 266 * should be placed below this comment from now on. The first variable 267 * here is marked as cacheline aligned so they it is separated from 268 * the read-mostly variables. 269 */ 270 271 spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ 272 struct percpu_counter m_icount; /* allocated inodes counter */ 273 struct percpu_counter m_ifree; /* free inodes counter */ 274 275 struct xfs_freecounter m_free[XC_FREE_NR]; 276 277 /* 278 * Count of data device blocks reserved for delayed allocations, 279 * including indlen blocks. Does not include allocated CoW staging 280 * extents or anything related to the rt device. 281 */ 282 struct percpu_counter m_delalloc_blks; 283 284 /* 285 * RT version of the above. 286 */ 287 struct percpu_counter m_delalloc_rtextents; 288 289 /* 290 * Global count of allocation btree blocks in use across all AGs. Only 291 * used when perag reservation is enabled. Helps prevent block 292 * reservation from attempting to reserve allocation btree blocks. 293 */ 294 atomic64_t m_allocbt_blks; 295 296 struct xfs_groups m_groups[XG_TYPE_MAX]; 297 struct delayed_work m_reclaim_work; /* background inode reclaim */ 298 struct xfs_zone_info *m_zone_info; /* zone allocator information */ 299 struct dentry *m_debugfs; /* debugfs parent */ 300 struct xfs_kobj m_kobj; 301 struct xfs_kobj m_csum_kobj; 302 struct xfs_kobj m_error_kobj; 303 struct xfs_kobj m_error_meta_kobj; 304 struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; 305 struct xstats m_stats; /* per-fs stats */ 306 #ifdef CONFIG_XFS_ONLINE_SCRUB_STATS 307 struct xchk_stats *m_scrub_stats; 308 #endif 309 struct xfs_kobj m_zoned_kobj; 310 xfs_agnumber_t m_agfrotor; /* last ag where space found */ 311 atomic_t m_agirotor; /* last ag dir inode alloced */ 312 atomic_t m_rtgrotor; /* last rtgroup rtpicked */ 313 314 struct mutex m_metafile_resv_lock; 315 uint64_t m_metafile_resv_target; 316 uint64_t m_metafile_resv_used; 317 uint64_t m_metafile_resv_avail; 318 319 /* Memory shrinker to throttle and reprioritize inodegc */ 320 struct shrinker *m_inodegc_shrinker; 321 /* 322 * Workqueue item so that we can coalesce multiple inode flush attempts 323 * into a single flush. 324 */ 325 struct work_struct m_flush_inodes_work; 326 327 /* 328 * Generation of the filesysyem layout. This is incremented by each 329 * growfs, and used by the pNFS server to ensure the client updates 330 * its view of the block device once it gets a layout that might 331 * reference the newly added blocks. Does not need to be persistent 332 * as long as we only allow file system size increments, but if we 333 * ever support shrinks it would have to be persisted in addition 334 * to various other kinds of pain inflicted on the pNFS server. 335 */ 336 uint32_t m_generation; 337 struct mutex m_growlock; /* growfs mutex */ 338 339 #ifdef DEBUG 340 /* 341 * Frequency with which errors are injected. Replaces xfs_etest; the 342 * value stored in here is the inverse of the frequency with which the 343 * error triggers. 1 = always, 2 = half the time, etc. 344 */ 345 unsigned int *m_errortag; 346 struct xfs_kobj m_errortag_kobj; 347 #endif 348 349 /* cpus that have inodes queued for inactivation */ 350 struct cpumask m_inodegc_cpumask; 351 352 /* Hook to feed dirent updates to an active online repair. */ 353 struct xfs_hooks m_dir_update_hooks; 354 355 /* Private data referring to a health monitor object. */ 356 struct xfs_healthmon __rcu *m_healthmon; 357 358 /* Index of uuid record in the uuid xarray. */ 359 unsigned int m_uuid_table_index; 360 361 /* 362 * Old io_pages/ra_pages valued in the main bdev BDI, and our initial 363 * calculated values. 364 */ 365 unsigned long m_old_io_pages, m_initial_io_pages; 366 unsigned long m_old_ra_pages, m_initial_ra_pages; 367 } xfs_mount_t; 368 369 #define M_IGEO(mp) (&(mp)->m_ino_geo) 370 371 /* 372 * Flags for m_features. 373 * 374 * These are all the active features in the filesystem, regardless of how 375 * they are configured. 376 */ 377 #define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ 378 #define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ 379 #define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ 380 #define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ 381 #define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ 382 #define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ 383 #define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ 384 #define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ 385 #define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ 386 #define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ 387 #define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ 388 #define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ 389 #define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ 390 #define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ 391 #define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ 392 #define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ 393 #define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ 394 #define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ 395 #define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ 396 #define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ 397 #define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ 398 #define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ 399 #define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ 400 #define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ 401 #define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ 402 #define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ 403 #define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */ 404 #define XFS_FEAT_METADIR (1ULL << 28) /* metadata directory tree */ 405 #define XFS_FEAT_ZONED (1ULL << 29) /* zoned RT device */ 406 407 /* Mount features */ 408 #define XFS_FEAT_NOLIFETIME (1ULL << 47) /* disable lifetime hints */ 409 #define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ 410 #define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ 411 #define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred 412 * I/O size in stat() */ 413 #define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ 414 #define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ 415 #define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ 416 #define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ 417 #define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ 418 #define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ 419 #define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ 420 #define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ 421 #define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ 422 #define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ 423 #define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ 424 425 #define __XFS_HAS_FEAT(name, NAME) \ 426 static inline bool xfs_has_ ## name (const struct xfs_mount *mp) \ 427 { \ 428 return mp->m_features & XFS_FEAT_ ## NAME; \ 429 } 430 431 /* Some features can be added dynamically so they need a set wrapper, too. */ 432 #define __XFS_ADD_FEAT(name, NAME) \ 433 __XFS_HAS_FEAT(name, NAME); \ 434 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 435 { \ 436 mp->m_features |= XFS_FEAT_ ## NAME; \ 437 xfs_sb_version_add ## name(&mp->m_sb); \ 438 } 439 440 /* Superblock features */ 441 __XFS_ADD_FEAT(attr, ATTR) 442 __XFS_HAS_FEAT(nlink, NLINK) 443 __XFS_ADD_FEAT(quota, QUOTA) 444 __XFS_HAS_FEAT(dalign, DALIGN) 445 __XFS_HAS_FEAT(sector, SECTOR) 446 __XFS_HAS_FEAT(asciici, ASCIICI) 447 __XFS_HAS_FEAT(parent, PARENT) 448 __XFS_HAS_FEAT(ftype, FTYPE) 449 __XFS_HAS_FEAT(finobt, FINOBT) 450 __XFS_HAS_FEAT(rmapbt, RMAPBT) 451 __XFS_HAS_FEAT(reflink, REFLINK) 452 __XFS_HAS_FEAT(sparseinodes, SPINODES) 453 __XFS_HAS_FEAT(metauuid, META_UUID) 454 __XFS_HAS_FEAT(realtime, REALTIME) 455 __XFS_HAS_FEAT(inobtcounts, INOBTCNT) 456 __XFS_HAS_FEAT(bigtime, BIGTIME) 457 __XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) 458 __XFS_HAS_FEAT(large_extent_counts, NREXT64) 459 __XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE) 460 __XFS_HAS_FEAT(metadir, METADIR) 461 __XFS_HAS_FEAT(zoned, ZONED) 462 __XFS_HAS_FEAT(nolifetime, NOLIFETIME) 463 464 static inline bool xfs_has_rtgroups(const struct xfs_mount *mp) 465 { 466 /* all metadir file systems also allow rtgroups */ 467 return xfs_has_metadir(mp); 468 } 469 470 static inline bool xfs_has_rtsb(const struct xfs_mount *mp) 471 { 472 /* all rtgroups filesystems with an rt section have an rtsb */ 473 return xfs_has_rtgroups(mp) && 474 xfs_has_realtime(mp) && 475 !xfs_has_zoned(mp); 476 } 477 478 static inline bool xfs_has_rtrmapbt(const struct xfs_mount *mp) 479 { 480 return xfs_has_rtgroups(mp) && xfs_has_realtime(mp) && 481 xfs_has_rmapbt(mp); 482 } 483 484 static inline bool xfs_has_rtreflink(const struct xfs_mount *mp) 485 { 486 return xfs_has_metadir(mp) && xfs_has_realtime(mp) && 487 xfs_has_reflink(mp); 488 } 489 490 static inline bool xfs_has_nonzoned(const struct xfs_mount *mp) 491 { 492 return !xfs_has_zoned(mp); 493 } 494 495 static inline bool xfs_can_sw_atomic_write(struct xfs_mount *mp) 496 { 497 return xfs_has_reflink(mp); 498 } 499 500 /* 501 * Some features are always on for v5 file systems, allow the compiler to 502 * eliminiate dead code when building without v4 support. 503 */ 504 #define __XFS_HAS_V4_FEAT(name, NAME) \ 505 static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ 506 { \ 507 return !IS_ENABLED(CONFIG_XFS_SUPPORT_V4) || \ 508 (mp->m_features & XFS_FEAT_ ## NAME); \ 509 } 510 511 #define __XFS_ADD_V4_FEAT(name, NAME) \ 512 __XFS_HAS_V4_FEAT(name, NAME); \ 513 static inline void xfs_add_ ## name (struct xfs_mount *mp) \ 514 { \ 515 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) { \ 516 mp->m_features |= XFS_FEAT_ ## NAME; \ 517 xfs_sb_version_add ## name(&mp->m_sb); \ 518 } \ 519 } 520 521 __XFS_HAS_V4_FEAT(align, ALIGN) 522 __XFS_HAS_V4_FEAT(logv2, LOGV2) 523 __XFS_HAS_V4_FEAT(extflg, EXTFLG) 524 __XFS_HAS_V4_FEAT(lazysbcount, LAZYSBCOUNT) 525 __XFS_ADD_V4_FEAT(projid32, PROJID32) 526 __XFS_HAS_V4_FEAT(v3inodes, V3INODES) 527 __XFS_HAS_V4_FEAT(crc, CRC) 528 __XFS_HAS_V4_FEAT(pquotino, PQUOTINO) 529 530 static inline void xfs_add_attr2(struct xfs_mount *mp) 531 { 532 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) 533 xfs_sb_version_addattr2(&mp->m_sb); 534 } 535 536 /* 537 * Mount features 538 * 539 * These do not change dynamically - features that can come and go, such as 32 540 * bit inodes and read-only state, are kept as operational state rather than 541 * features. 542 */ 543 __XFS_HAS_FEAT(noalign, NOALIGN) 544 __XFS_HAS_FEAT(allocsize, ALLOCSIZE) 545 __XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) 546 __XFS_HAS_FEAT(wsync, WSYNC) 547 __XFS_HAS_FEAT(dirsync, DIRSYNC) 548 __XFS_HAS_FEAT(discard, DISCARD) 549 __XFS_HAS_FEAT(grpid, GRPID) 550 __XFS_HAS_FEAT(small_inums, SMALL_INUMS) 551 __XFS_HAS_FEAT(swalloc, SWALLOC) 552 __XFS_HAS_FEAT(filestreams, FILESTREAMS) 553 __XFS_HAS_FEAT(dax_always, DAX_ALWAYS) 554 __XFS_HAS_FEAT(dax_never, DAX_NEVER) 555 __XFS_HAS_FEAT(norecovery, NORECOVERY) 556 __XFS_HAS_FEAT(nouuid, NOUUID) 557 558 /* 559 * Operational mount state flags 560 * 561 * Use these with atomic bit ops only! 562 */ 563 #define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ 564 #define XFS_OPSTATE_CLEAN 1 /* mount was clean */ 565 #define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ 566 #define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ 567 #define XFS_OPSTATE_READONLY 4 /* read-only fs */ 568 569 /* 570 * If set, inactivation worker threads will be scheduled to process queued 571 * inodegc work. If not, queued inodes remain in memory waiting to be 572 * processed. 573 */ 574 #define XFS_OPSTATE_INODEGC_ENABLED 5 575 /* 576 * If set, background speculative prealloc gc worker threads will be scheduled 577 * to process queued blockgc work. If not, inodes retain their preallocations 578 * until explicitly deleted. 579 */ 580 #define XFS_OPSTATE_BLOCKGC_ENABLED 6 581 582 /* Kernel has logged a warning about shrink being used on this fs. */ 583 #define XFS_OPSTATE_WARNED_SHRINK 9 584 /* Kernel has logged a warning about logged xattr updates being used. */ 585 #define XFS_OPSTATE_WARNED_LARP 10 586 /* Mount time quotacheck is running */ 587 #define XFS_OPSTATE_QUOTACHECK_RUNNING 11 588 /* Do we want to clear log incompat flags? */ 589 #define XFS_OPSTATE_UNSET_LOG_INCOMPAT 12 590 /* Filesystem can use logged extended attributes */ 591 #define XFS_OPSTATE_USE_LARP 13 592 /* Kernel has logged a warning about blocksize > pagesize on this fs. */ 593 #define XFS_OPSTATE_WARNED_LBS 14 594 /* Kernel has logged a warning about metadata dirs being used on this fs. */ 595 #define XFS_OPSTATE_WARNED_METADIR 17 596 /* Filesystem should use qflags to determine quotaon status */ 597 #define XFS_OPSTATE_RESUMING_QUOTAON 18 598 /* (Zoned) GC is in progress */ 599 #define XFS_OPSTATE_ZONEGC_RUNNING 20 600 601 #define __XFS_IS_OPSTATE(name, NAME) \ 602 static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ 603 { \ 604 return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 605 } \ 606 static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ 607 { \ 608 return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 609 } \ 610 static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ 611 { \ 612 return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ 613 } 614 615 __XFS_IS_OPSTATE(unmounting, UNMOUNTING) 616 __XFS_IS_OPSTATE(clean, CLEAN) 617 __XFS_IS_OPSTATE(shutdown, SHUTDOWN) 618 __XFS_IS_OPSTATE(inode32, INODE32) 619 __XFS_IS_OPSTATE(readonly, READONLY) 620 __XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) 621 __XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) 622 #ifdef CONFIG_XFS_QUOTA 623 __XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING) 624 __XFS_IS_OPSTATE(resuming_quotaon, RESUMING_QUOTAON) 625 #else 626 static inline bool xfs_is_quotacheck_running(struct xfs_mount *mp) 627 { 628 return false; 629 } 630 static inline bool xfs_is_resuming_quotaon(struct xfs_mount *mp) 631 { 632 return false; 633 } 634 static inline void xfs_set_resuming_quotaon(struct xfs_mount *m) 635 { 636 } 637 static inline bool xfs_clear_resuming_quotaon(struct xfs_mount *mp) 638 { 639 return false; 640 } 641 #endif /* CONFIG_XFS_QUOTA */ 642 __XFS_IS_OPSTATE(done_with_log_incompat, UNSET_LOG_INCOMPAT) 643 __XFS_IS_OPSTATE(using_logged_xattrs, USE_LARP) 644 __XFS_IS_OPSTATE(zonegc_running, ZONEGC_RUNNING) 645 646 static inline bool 647 xfs_should_warn(struct xfs_mount *mp, long nr) 648 { 649 return !test_and_set_bit(nr, &mp->m_opstate); 650 } 651 652 #define XFS_OPSTATE_STRINGS \ 653 { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ 654 { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ 655 { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ 656 { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ 657 { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ 658 { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ 659 { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ 660 { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ 661 { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \ 662 { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \ 663 { (1UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \ 664 { (1UL << XFS_OPSTATE_USE_LARP), "logged_xattrs" } 665 666 /* 667 * Max and min values for mount-option defined I/O 668 * preallocation sizes. 669 */ 670 #define XFS_MAX_IO_LOG 30 /* 1G */ 671 #define XFS_MIN_IO_LOG PAGE_SHIFT 672 673 void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, 674 int lnnum); 675 #define xfs_force_shutdown(m,f) \ 676 xfs_do_force_shutdown(m, f, __FILE__, __LINE__) 677 678 #define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ 679 #define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ 680 #define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ 681 #define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ 682 #define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */ 683 #define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */ 684 685 #define XFS_SHUTDOWN_STRINGS \ 686 { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ 687 { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ 688 { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ 689 { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \ 690 { SHUTDOWN_DEVICE_REMOVED, "device_removed" } 691 692 /* 693 * Flags for xfs_mountfs 694 */ 695 #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ 696 697 static inline xfs_agnumber_t 698 xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) 699 { 700 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 701 do_div(ld, mp->m_sb.sb_agblocks); 702 return (xfs_agnumber_t) ld; 703 } 704 705 static inline xfs_agblock_t 706 xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) 707 { 708 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); 709 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); 710 } 711 712 extern void xfs_uuid_table_free(void); 713 uint64_t xfs_default_resblks(struct xfs_mount *mp, 714 enum xfs_free_counter ctr); 715 extern int xfs_mountfs(xfs_mount_t *mp); 716 extern void xfs_unmountfs(xfs_mount_t *); 717 718 /* 719 * Deltas for the block count can vary from 1 to very large, but lock contention 720 * only occurs on frequent small block count updates such as in the delayed 721 * allocation path for buffered writes (page a time updates). Hence we set 722 * a large batch count (1024) to minimise global counter updates except when 723 * we get near to ENOSPC and we have to be very accurate with our updates. 724 */ 725 #define XFS_FDBLOCKS_BATCH 1024 726 727 uint64_t xfs_freecounter_unavailable(struct xfs_mount *mp, 728 enum xfs_free_counter ctr); 729 730 /* 731 * Sum up the freecount, but never return negative values. 732 */ 733 static inline s64 xfs_sum_freecounter(struct xfs_mount *mp, 734 enum xfs_free_counter ctr) 735 { 736 return percpu_counter_sum_positive(&mp->m_free[ctr].count); 737 } 738 739 /* 740 * Same as above, but does return negative values. Mostly useful for 741 * special cases like repair and tracing. 742 */ 743 static inline s64 xfs_sum_freecounter_raw(struct xfs_mount *mp, 744 enum xfs_free_counter ctr) 745 { 746 return percpu_counter_sum(&mp->m_free[ctr].count); 747 } 748 749 /* 750 * This just provides and estimate without the cpu-local updates, use 751 * xfs_sum_freecounter for the exact value. 752 */ 753 static inline s64 xfs_estimate_freecounter(struct xfs_mount *mp, 754 enum xfs_free_counter ctr) 755 { 756 return percpu_counter_read_positive(&mp->m_free[ctr].count); 757 } 758 759 static inline int xfs_compare_freecounter(struct xfs_mount *mp, 760 enum xfs_free_counter ctr, s64 rhs, s32 batch) 761 { 762 return __percpu_counter_compare(&mp->m_free[ctr].count, rhs, batch); 763 } 764 765 static inline void xfs_set_freecounter(struct xfs_mount *mp, 766 enum xfs_free_counter ctr, uint64_t val) 767 { 768 percpu_counter_set(&mp->m_free[ctr].count, val); 769 } 770 771 int xfs_dec_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, 772 uint64_t delta, bool rsvd); 773 void xfs_add_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, 774 uint64_t delta); 775 776 static inline int xfs_dec_fdblocks(struct xfs_mount *mp, uint64_t delta, 777 bool reserved) 778 { 779 return xfs_dec_freecounter(mp, XC_FREE_BLOCKS, delta, reserved); 780 } 781 782 static inline void xfs_add_fdblocks(struct xfs_mount *mp, uint64_t delta) 783 { 784 xfs_add_freecounter(mp, XC_FREE_BLOCKS, delta); 785 } 786 787 static inline int xfs_dec_frextents(struct xfs_mount *mp, uint64_t delta) 788 { 789 return xfs_dec_freecounter(mp, XC_FREE_RTEXTENTS, delta, false); 790 } 791 792 static inline void xfs_add_frextents(struct xfs_mount *mp, uint64_t delta) 793 { 794 xfs_add_freecounter(mp, XC_FREE_RTEXTENTS, delta); 795 } 796 797 extern int xfs_readsb(xfs_mount_t *, int); 798 extern void xfs_freesb(xfs_mount_t *); 799 extern bool xfs_fs_writable(struct xfs_mount *mp, int level); 800 extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); 801 802 extern int xfs_dev_is_read_only(struct xfs_mount *, char *); 803 804 extern void xfs_set_low_space_thresholds(struct xfs_mount *); 805 806 int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, 807 xfs_off_t count_fsb); 808 809 struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, 810 int error_class, int error); 811 void xfs_force_summary_recalc(struct xfs_mount *mp); 812 int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); 813 bool xfs_clear_incompat_log_features(struct xfs_mount *mp); 814 void xfs_mod_delalloc(struct xfs_inode *ip, int64_t data_delta, 815 int64_t ind_delta); 816 static inline void xfs_mod_sb_delalloc(struct xfs_mount *mp, int64_t delta) 817 { 818 percpu_counter_add(&mp->m_delalloc_blks, delta); 819 } 820 821 int xfs_set_max_atomic_write_opt(struct xfs_mount *mp, 822 unsigned long long new_max_bytes); 823 xfs_extlen_t xfs_calc_group_awu_align_max(struct xfs_mount *mp, 824 enum xfs_group_type type); 825 826 static inline struct xfs_buftarg * 827 xfs_group_type_buftarg( 828 struct xfs_mount *mp, 829 enum xfs_group_type type) 830 { 831 switch (type) { 832 case XG_TYPE_AG: 833 return mp->m_ddev_targp; 834 case XG_TYPE_RTG: 835 return mp->m_rtdev_targp; 836 default: 837 ASSERT(0); 838 break; 839 } 840 return NULL; 841 } 842 843 #endif /* __XFS_MOUNT_H__ */ 844