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1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (c) 2000-2005 Silicon Graphics, Inc.4 * All Rights Reserved.5 */6#ifndef __XFS_MOUNT_H__7#define __XFS_MOUNT_H__8 9struct xlog;10struct xfs_inode;11struct xfs_mru_cache;12struct xfs_ail;13struct xfs_quotainfo;14struct xfs_da_geometry;15struct xfs_perag;16 17/* dynamic preallocation free space thresholds, 5% down to 1% */18enum {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 Configuration29 *30 * Error classes define the subsystem the configuration belongs to.31 * Error numbers define the errors that are configurable.32 */33enum {34 XFS_ERR_METADATA,35 XFS_ERR_CLASS_MAX,36};37enum {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 -146 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 a50 * signed 32-bit long is sufficient for a HZ value up to 24855. Making it51 * signed lets us store the special "-1" value, meaning retry forever.52 */53struct 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 */62struct 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 * The struct xfsmount layout is optimised to separate read-mostly variables76 * from variables that are frequently modified. We put the read-mostly variables77 * first, then place all the other variables at the end.78 *79 * Typically, read-mostly variables are those that are set at mount time and80 * never changed again, or only change rarely as a result of things like sysfs81 * knobs being tweaked.82 */83typedef struct xfs_mount {84 struct xfs_sb m_sb; /* copy of fs superblock */85 struct super_block *m_super;86 struct xfs_ail *m_ail; /* fs active log item list */87 struct xfs_buf *m_sb_bp; /* buffer for superblock */88 char *m_rtname; /* realtime device name */89 char *m_logname; /* external log device name */90 struct xfs_da_geometry *m_dir_geo; /* directory block geometry */91 struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */92 struct xlog *m_log; /* log specific stuff */93 struct xfs_inode *m_rbmip; /* pointer to bitmap inode */94 struct xfs_inode *m_rsumip; /* pointer to summary inode */95 struct xfs_inode *m_rootip; /* pointer to root directory */96 struct xfs_quotainfo *m_quotainfo; /* disk quota information */97 struct xfs_buftarg *m_ddev_targp; /* data device */98 struct xfs_buftarg *m_logdev_targp;/* log device */99 struct xfs_buftarg *m_rtdev_targp; /* rt device */100 void __percpu *m_inodegc; /* percpu inodegc structures */101 102 /*103 * Optional cache of rt summary level per bitmap block with the104 * invariant that m_rsum_cache[bbno] > the maximum i for which105 * rsum[i][bbno] != 0, or 0 if rsum[i][bbno] == 0 for all i.106 * Reads and writes are serialized by the rsumip inode lock.107 */108 uint8_t *m_rsum_cache;109 struct xfs_mru_cache *m_filestream; /* per-mount filestream data */110 struct workqueue_struct *m_buf_workqueue;111 struct workqueue_struct *m_unwritten_workqueue;112 struct workqueue_struct *m_reclaim_workqueue;113 struct workqueue_struct *m_sync_workqueue;114 struct workqueue_struct *m_blockgc_wq;115 struct workqueue_struct *m_inodegc_wq;116 117 int m_bsize; /* fs logical block size */118 uint8_t m_blkbit_log; /* blocklog + NBBY */119 uint8_t m_blkbb_log; /* blocklog - BBSHIFT */120 uint8_t m_agno_log; /* log #ag's */121 uint8_t m_sectbb_log; /* sectlog - BBSHIFT */122 int8_t m_rtxblklog; /* log2 of rextsize, if possible */123 uint m_blockmask; /* sb_blocksize-1 */124 uint m_blockwsize; /* sb_blocksize in words */125 uint m_blockwmask; /* blockwsize-1 */126 uint m_alloc_mxr[2]; /* max alloc btree records */127 uint m_alloc_mnr[2]; /* min alloc btree records */128 uint m_bmap_dmxr[2]; /* max bmap btree records */129 uint m_bmap_dmnr[2]; /* min bmap btree records */130 uint m_rmap_mxr[2]; /* max rmap btree records */131 uint m_rmap_mnr[2]; /* min rmap btree records */132 uint m_refc_mxr[2]; /* max refc btree records */133 uint m_refc_mnr[2]; /* min refc btree records */134 uint m_alloc_maxlevels; /* max alloc btree levels */135 uint m_bm_maxlevels[2]; /* max bmap btree levels */136 uint m_rmap_maxlevels; /* max rmap btree levels */137 uint m_refc_maxlevels; /* max refcount btree level */138 unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */139 xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */140 uint m_alloc_set_aside; /* space we can't use */141 uint m_ag_max_usable; /* max space per AG */142 int m_dalign; /* stripe unit */143 int m_swidth; /* stripe width */144 xfs_agnumber_t m_maxagi; /* highest inode alloc group */145 uint m_allocsize_log;/* min write size log bytes */146 uint m_allocsize_blocks; /* min write size blocks */147 int m_logbufs; /* number of log buffers */148 int m_logbsize; /* size of each log buffer */149 uint m_rsumlevels; /* rt summary levels */150 xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */151 int m_fixedfsid[2]; /* unchanged for life of FS */152 uint m_qflags; /* quota status flags */153 uint64_t m_features; /* active filesystem features */154 uint64_t m_low_space[XFS_LOWSP_MAX];155 uint64_t m_low_rtexts[XFS_LOWSP_MAX];156 uint64_t m_rtxblkmask; /* rt extent block mask */157 struct xfs_ino_geometry m_ino_geo; /* inode geometry */158 struct xfs_trans_resv m_resv; /* precomputed res values */159 /* low free space thresholds */160 unsigned long m_opstate; /* dynamic state flags */161 bool m_always_cow;162 bool m_fail_unmount;163 bool m_finobt_nores; /* no per-AG finobt resv. */164 bool m_update_sb; /* sb needs update in mount */165 166 /*167 * Bitsets of per-fs metadata that have been checked and/or are sick.168 * Callers must hold m_sb_lock to access these two fields.169 */170 uint8_t m_fs_checked;171 uint8_t m_fs_sick;172 /*173 * Bitsets of rt metadata that have been checked and/or are sick.174 * Callers must hold m_sb_lock to access this field.175 */176 uint8_t m_rt_checked;177 uint8_t m_rt_sick;178 179 /*180 * End of read-mostly variables. Frequently written variables and locks181 * should be placed below this comment from now on. The first variable182 * here is marked as cacheline aligned so they it is separated from183 * the read-mostly variables.184 */185 186 spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */187 struct percpu_counter m_icount; /* allocated inodes counter */188 struct percpu_counter m_ifree; /* free inodes counter */189 struct percpu_counter m_fdblocks; /* free block counter */190 struct percpu_counter m_frextents; /* free rt extent counter */191 192 /*193 * Count of data device blocks reserved for delayed allocations,194 * including indlen blocks. Does not include allocated CoW staging195 * extents or anything related to the rt device.196 */197 struct percpu_counter m_delalloc_blks;198 199 /*200 * RT version of the above.201 */202 struct percpu_counter m_delalloc_rtextents;203 204 /*205 * Global count of allocation btree blocks in use across all AGs. Only206 * used when perag reservation is enabled. Helps prevent block207 * reservation from attempting to reserve allocation btree blocks.208 */209 atomic64_t m_allocbt_blks;210 211 struct xarray m_perags; /* per-ag accounting info */212 uint64_t m_resblks; /* total reserved blocks */213 uint64_t m_resblks_avail;/* available reserved blocks */214 uint64_t m_resblks_save; /* reserved blks @ remount,ro */215 struct delayed_work m_reclaim_work; /* background inode reclaim */216 struct dentry *m_debugfs; /* debugfs parent */217 struct xfs_kobj m_kobj;218 struct xfs_kobj m_error_kobj;219 struct xfs_kobj m_error_meta_kobj;220 struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX];221 struct xstats m_stats; /* per-fs stats */222#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS223 struct xchk_stats *m_scrub_stats;224#endif225 xfs_agnumber_t m_agfrotor; /* last ag where space found */226 atomic_t m_agirotor; /* last ag dir inode alloced */227 228 /* Memory shrinker to throttle and reprioritize inodegc */229 struct shrinker *m_inodegc_shrinker;230 /*231 * Workqueue item so that we can coalesce multiple inode flush attempts232 * into a single flush.233 */234 struct work_struct m_flush_inodes_work;235 236 /*237 * Generation of the filesysyem layout. This is incremented by each238 * growfs, and used by the pNFS server to ensure the client updates239 * its view of the block device once it gets a layout that might240 * reference the newly added blocks. Does not need to be persistent241 * as long as we only allow file system size increments, but if we242 * ever support shrinks it would have to be persisted in addition243 * to various other kinds of pain inflicted on the pNFS server.244 */245 uint32_t m_generation;246 struct mutex m_growlock; /* growfs mutex */247 248#ifdef DEBUG249 /*250 * Frequency with which errors are injected. Replaces xfs_etest; the251 * value stored in here is the inverse of the frequency with which the252 * error triggers. 1 = always, 2 = half the time, etc.253 */254 unsigned int *m_errortag;255 struct xfs_kobj m_errortag_kobj;256#endif257 258 /* cpus that have inodes queued for inactivation */259 struct cpumask m_inodegc_cpumask;260 261 /* Hook to feed dirent updates to an active online repair. */262 struct xfs_hooks m_dir_update_hooks;263} xfs_mount_t;264 265#define M_IGEO(mp) (&(mp)->m_ino_geo)266 267/*268 * Flags for m_features.269 *270 * These are all the active features in the filesystem, regardless of how271 * they are configured.272 */273#define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */274#define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */275#define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */276#define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */277#define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */278#define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */279#define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */280#define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */281#define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */282#define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */283#define XFS_FEAT_ATTR2 (1ULL << 10) /* dynamic attr fork */284#define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */285#define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */286#define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */287#define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */288#define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */289#define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */290#define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */291#define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */292#define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */293#define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */294#define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */295#define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */296#define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */297#define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */298#define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */299#define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */300#define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */301 302/* Mount features */303#define XFS_FEAT_NOATTR2 (1ULL << 48) /* disable attr2 creation */304#define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */305#define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */306#define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred307 * I/O size in stat() */308#define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */309#define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */310#define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */311#define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */312#define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */313#define XFS_FEAT_IKEEP (1ULL << 57) /* keep empty inode clusters*/314#define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */315#define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */316#define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */317#define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */318#define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */319#define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */320 321#define __XFS_HAS_FEAT(name, NAME) \322static inline bool xfs_has_ ## name (struct xfs_mount *mp) \323{ \324 return mp->m_features & XFS_FEAT_ ## NAME; \325}326 327/* Some features can be added dynamically so they need a set wrapper, too. */328#define __XFS_ADD_FEAT(name, NAME) \329 __XFS_HAS_FEAT(name, NAME); \330static inline void xfs_add_ ## name (struct xfs_mount *mp) \331{ \332 mp->m_features |= XFS_FEAT_ ## NAME; \333 xfs_sb_version_add ## name(&mp->m_sb); \334}335 336/* Superblock features */337__XFS_ADD_FEAT(attr, ATTR)338__XFS_HAS_FEAT(nlink, NLINK)339__XFS_ADD_FEAT(quota, QUOTA)340__XFS_HAS_FEAT(dalign, DALIGN)341__XFS_HAS_FEAT(sector, SECTOR)342__XFS_HAS_FEAT(asciici, ASCIICI)343__XFS_HAS_FEAT(parent, PARENT)344__XFS_HAS_FEAT(ftype, FTYPE)345__XFS_HAS_FEAT(finobt, FINOBT)346__XFS_HAS_FEAT(rmapbt, RMAPBT)347__XFS_HAS_FEAT(reflink, REFLINK)348__XFS_HAS_FEAT(sparseinodes, SPINODES)349__XFS_HAS_FEAT(metauuid, META_UUID)350__XFS_HAS_FEAT(realtime, REALTIME)351__XFS_HAS_FEAT(inobtcounts, INOBTCNT)352__XFS_HAS_FEAT(bigtime, BIGTIME)353__XFS_HAS_FEAT(needsrepair, NEEDSREPAIR)354__XFS_HAS_FEAT(large_extent_counts, NREXT64)355__XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE)356 357/*358 * Some features are always on for v5 file systems, allow the compiler to359 * eliminiate dead code when building without v4 support.360 */361#define __XFS_HAS_V4_FEAT(name, NAME) \362static inline bool xfs_has_ ## name (struct xfs_mount *mp) \363{ \364 return !IS_ENABLED(CONFIG_XFS_SUPPORT_V4) || \365 (mp->m_features & XFS_FEAT_ ## NAME); \366}367 368#define __XFS_ADD_V4_FEAT(name, NAME) \369 __XFS_HAS_V4_FEAT(name, NAME); \370static inline void xfs_add_ ## name (struct xfs_mount *mp) \371{ \372 if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) { \373 mp->m_features |= XFS_FEAT_ ## NAME; \374 xfs_sb_version_add ## name(&mp->m_sb); \375 } \376}377 378__XFS_HAS_V4_FEAT(align, ALIGN)379__XFS_HAS_V4_FEAT(logv2, LOGV2)380__XFS_HAS_V4_FEAT(extflg, EXTFLG)381__XFS_HAS_V4_FEAT(lazysbcount, LAZYSBCOUNT)382__XFS_ADD_V4_FEAT(attr2, ATTR2)383__XFS_ADD_V4_FEAT(projid32, PROJID32)384__XFS_HAS_V4_FEAT(v3inodes, V3INODES)385__XFS_HAS_V4_FEAT(crc, CRC)386__XFS_HAS_V4_FEAT(pquotino, PQUOTINO)387 388/*389 * Mount features390 *391 * These do not change dynamically - features that can come and go, such as 32392 * bit inodes and read-only state, are kept as operational state rather than393 * features.394 */395__XFS_HAS_FEAT(noattr2, NOATTR2)396__XFS_HAS_FEAT(noalign, NOALIGN)397__XFS_HAS_FEAT(allocsize, ALLOCSIZE)398__XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE)399__XFS_HAS_FEAT(wsync, WSYNC)400__XFS_HAS_FEAT(dirsync, DIRSYNC)401__XFS_HAS_FEAT(discard, DISCARD)402__XFS_HAS_FEAT(grpid, GRPID)403__XFS_HAS_FEAT(small_inums, SMALL_INUMS)404__XFS_HAS_FEAT(ikeep, IKEEP)405__XFS_HAS_FEAT(swalloc, SWALLOC)406__XFS_HAS_FEAT(filestreams, FILESTREAMS)407__XFS_HAS_FEAT(dax_always, DAX_ALWAYS)408__XFS_HAS_FEAT(dax_never, DAX_NEVER)409__XFS_HAS_FEAT(norecovery, NORECOVERY)410__XFS_HAS_FEAT(nouuid, NOUUID)411 412/*413 * Operational mount state flags414 *415 * Use these with atomic bit ops only!416 */417#define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */418#define XFS_OPSTATE_CLEAN 1 /* mount was clean */419#define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */420#define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */421#define XFS_OPSTATE_READONLY 4 /* read-only fs */422 423/*424 * If set, inactivation worker threads will be scheduled to process queued425 * inodegc work. If not, queued inodes remain in memory waiting to be426 * processed.427 */428#define XFS_OPSTATE_INODEGC_ENABLED 5429/*430 * If set, background speculative prealloc gc worker threads will be scheduled431 * to process queued blockgc work. If not, inodes retain their preallocations432 * until explicitly deleted.433 */434#define XFS_OPSTATE_BLOCKGC_ENABLED 6435 436/* Kernel has logged a warning about online fsck being used on this fs. */437#define XFS_OPSTATE_WARNED_SCRUB 7438/* Kernel has logged a warning about shrink being used on this fs. */439#define XFS_OPSTATE_WARNED_SHRINK 8440/* Kernel has logged a warning about logged xattr updates being used. */441#define XFS_OPSTATE_WARNED_LARP 9442/* Mount time quotacheck is running */443#define XFS_OPSTATE_QUOTACHECK_RUNNING 10444/* Do we want to clear log incompat flags? */445#define XFS_OPSTATE_UNSET_LOG_INCOMPAT 11446/* Filesystem can use logged extended attributes */447#define XFS_OPSTATE_USE_LARP 12448 449#define __XFS_IS_OPSTATE(name, NAME) \450static inline bool xfs_is_ ## name (struct xfs_mount *mp) \451{ \452 return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \453} \454static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \455{ \456 return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \457} \458static inline bool xfs_set_ ## name (struct xfs_mount *mp) \459{ \460 return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \461}462 463__XFS_IS_OPSTATE(unmounting, UNMOUNTING)464__XFS_IS_OPSTATE(clean, CLEAN)465__XFS_IS_OPSTATE(shutdown, SHUTDOWN)466__XFS_IS_OPSTATE(inode32, INODE32)467__XFS_IS_OPSTATE(readonly, READONLY)468__XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED)469__XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED)470#ifdef CONFIG_XFS_QUOTA471__XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING)472#else473# define xfs_is_quotacheck_running(mp) (false)474#endif475__XFS_IS_OPSTATE(done_with_log_incompat, UNSET_LOG_INCOMPAT)476__XFS_IS_OPSTATE(using_logged_xattrs, USE_LARP)477 478static inline bool479xfs_should_warn(struct xfs_mount *mp, long nr)480{481 return !test_and_set_bit(nr, &mp->m_opstate);482}483 484#define XFS_OPSTATE_STRINGS \485 { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \486 { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \487 { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \488 { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \489 { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \490 { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \491 { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \492 { (1UL << XFS_OPSTATE_WARNED_SCRUB), "wscrub" }, \493 { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \494 { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \495 { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \496 { (1UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \497 { (1UL << XFS_OPSTATE_USE_LARP), "logged_xattrs" }498 499/*500 * Max and min values for mount-option defined I/O501 * preallocation sizes.502 */503#define XFS_MAX_IO_LOG 30 /* 1G */504#define XFS_MIN_IO_LOG PAGE_SHIFT505 506void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname,507 int lnnum);508#define xfs_force_shutdown(m,f) \509 xfs_do_force_shutdown(m, f, __FILE__, __LINE__)510 511#define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */512#define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */513#define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */514#define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */515#define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */516#define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */517 518#define XFS_SHUTDOWN_STRINGS \519 { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \520 { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \521 { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \522 { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \523 { SHUTDOWN_DEVICE_REMOVED, "device_removed" }524 525/*526 * Flags for xfs_mountfs527 */528#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */529 530static inline xfs_agnumber_t531xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d)532{533 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d);534 do_div(ld, mp->m_sb.sb_agblocks);535 return (xfs_agnumber_t) ld;536}537 538static inline xfs_agblock_t539xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d)540{541 xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d);542 return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);543}544 545extern void xfs_uuid_table_free(void);546extern uint64_t xfs_default_resblks(xfs_mount_t *mp);547extern int xfs_mountfs(xfs_mount_t *mp);548extern void xfs_unmountfs(xfs_mount_t *);549 550/*551 * Deltas for the block count can vary from 1 to very large, but lock contention552 * only occurs on frequent small block count updates such as in the delayed553 * allocation path for buffered writes (page a time updates). Hence we set554 * a large batch count (1024) to minimise global counter updates except when555 * we get near to ENOSPC and we have to be very accurate with our updates.556 */557#define XFS_FDBLOCKS_BATCH 1024558 559/*560 * Estimate the amount of free space that is not available to userspace and is561 * not explicitly reserved from the incore fdblocks. This includes:562 *563 * - The minimum number of blocks needed to support splitting a bmap btree564 * - The blocks currently in use by the freespace btrees because they record565 * the actual blocks that will fill per-AG metadata space reservations566 */567static inline uint64_t568xfs_fdblocks_unavailable(569 struct xfs_mount *mp)570{571 return mp->m_alloc_set_aside + atomic64_read(&mp->m_allocbt_blks);572}573 574int xfs_dec_freecounter(struct xfs_mount *mp, struct percpu_counter *counter,575 uint64_t delta, bool rsvd);576void xfs_add_freecounter(struct xfs_mount *mp, struct percpu_counter *counter,577 uint64_t delta);578 579static inline int xfs_dec_fdblocks(struct xfs_mount *mp, uint64_t delta,580 bool reserved)581{582 return xfs_dec_freecounter(mp, &mp->m_fdblocks, delta, reserved);583}584 585static inline void xfs_add_fdblocks(struct xfs_mount *mp, uint64_t delta)586{587 xfs_add_freecounter(mp, &mp->m_fdblocks, delta);588}589 590static inline int xfs_dec_frextents(struct xfs_mount *mp, uint64_t delta)591{592 return xfs_dec_freecounter(mp, &mp->m_frextents, delta, false);593}594 595static inline void xfs_add_frextents(struct xfs_mount *mp, uint64_t delta)596{597 xfs_add_freecounter(mp, &mp->m_frextents, delta);598}599 600extern int xfs_readsb(xfs_mount_t *, int);601extern void xfs_freesb(xfs_mount_t *);602extern bool xfs_fs_writable(struct xfs_mount *mp, int level);603extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t);604 605extern int xfs_dev_is_read_only(struct xfs_mount *, char *);606 607extern void xfs_set_low_space_thresholds(struct xfs_mount *);608 609int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb,610 xfs_off_t count_fsb);611 612struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp,613 int error_class, int error);614void xfs_force_summary_recalc(struct xfs_mount *mp);615int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature);616bool xfs_clear_incompat_log_features(struct xfs_mount *mp);617void xfs_mod_delalloc(struct xfs_inode *ip, int64_t data_delta,618 int64_t ind_delta);619 620#endif /* __XFS_MOUNT_H__ */621