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