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Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 833 |
1 files changed, 833 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h new file mode 100644 index 000000000..216a38a35 --- /dev/null +++ b/fs/xfs/xfs_mount.h @@ -0,0 +1,833 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2000-2005 Silicon Graphics, Inc. + * All Rights Reserved. + */ +#ifndef __XFS_MOUNT_H__ +#define __XFS_MOUNT_H__ + +struct xlog; +struct xfs_inode; +struct xfs_mru_cache; +struct xfs_ail; +struct xfs_quotainfo; +struct xfs_da_geometry; +struct xfs_perag; +struct xfs_healthmon; + +/* dynamic preallocation free space thresholds, 5% down to 1% */ +enum { + XFS_LOWSP_1_PCNT = 0, + XFS_LOWSP_2_PCNT, + XFS_LOWSP_3_PCNT, + XFS_LOWSP_4_PCNT, + XFS_LOWSP_5_PCNT, + XFS_LOWSP_MAX, +}; + +/* + * Error Configuration + * + * Error classes define the subsystem the configuration belongs to. + * Error numbers define the errors that are configurable. + */ +enum { + XFS_ERR_METADATA, + XFS_ERR_CLASS_MAX, +}; +enum { + XFS_ERR_DEFAULT, + XFS_ERR_EIO, + XFS_ERR_ENOSPC, + XFS_ERR_ENODEV, + XFS_ERR_ERRNO_MAX, +}; + +#define XFS_ERR_RETRY_FOREVER -1 + +/* + * Although retry_timeout is in jiffies which is normally an unsigned long, + * we limit the retry timeout to 86400 seconds, or one day. So even a + * signed 32-bit long is sufficient for a HZ value up to 24855. Making it + * signed lets us store the special "-1" value, meaning retry forever. + */ +struct xfs_error_cfg { + struct xfs_kobj kobj; + int max_retries; + long retry_timeout; /* in jiffies, -1 = infinite */ +}; + +/* + * Per-cpu deferred inode inactivation GC lists. + */ +struct xfs_inodegc { + struct xfs_mount *mp; + struct llist_head list; + struct delayed_work work; + int error; + + /* approximate count of inodes in the list */ + unsigned int items; + unsigned int shrinker_hits; + unsigned int cpu; +}; + +/* + * Container for each type of groups, used to look up individual groups and + * describes the geometry. + */ +struct xfs_groups { + struct xarray xa; + + /* + * Maximum capacity of the group in FSBs. + * + * Each group is laid out densely in the daddr space. For the + * degenerate case of a pre-rtgroups filesystem, the incore rtgroup + * pretends to have a zero-block and zero-blklog rtgroup. + */ + uint32_t blocks; + + /* + * Log(2) of the logical size of each group. + * + * Compared to the blocks field above this is rounded up to the next + * power of two, and thus lays out the xfs_fsblock_t/xfs_rtblock_t + * space sparsely with a hole from blocks to (1 << blklog) at the end + * of each group. + */ + uint8_t blklog; + + /* + * Zoned devices can have gaps beyond the usable capacity of a zone and + * the end in the LBA/daddr address space. In other words, the hardware + * equivalent to the RT groups already takes care of the power of 2 + * alignment for us. In this case the sparse FSB/RTB address space maps + * 1:1 to the device address space. + */ + bool has_daddr_gaps; + + /* + * Mask to extract the group-relative block number from a FSB. + * For a pre-rtgroups filesystem we pretend to have one very large + * rtgroup, so this mask must be 64-bit. + */ + uint64_t blkmask; + + /* + * Start of the first group in the device. This is used to support a + * RT device following the data device on the same block device for + * SMR hard drives. + */ + xfs_fsblock_t start_fsb; + + /* + * Maximum length of an atomic write for files stored in this + * collection of allocation groups, in fsblocks. + */ + xfs_extlen_t awu_max; +}; + +struct xfs_freecounter { + /* free blocks for general use: */ + struct percpu_counter count; + + /* total reserved blocks: */ + uint64_t res_total; + + /* available reserved blocks: */ + uint64_t res_avail; + + /* reserved blks @ remount,ro: */ + uint64_t res_saved; +}; + +/* + * The struct xfsmount layout is optimised to separate read-mostly variables + * from variables that are frequently modified. We put the read-mostly variables + * first, then place all the other variables at the end. + * + * Typically, read-mostly variables are those that are set at mount time and + * never changed again, or only change rarely as a result of things like sysfs + * knobs being tweaked. + */ +typedef struct xfs_mount { + struct xfs_sb m_sb; /* copy of fs superblock */ + struct super_block *m_super; + struct xfs_ail *m_ail; /* fs active log item list */ + struct xfs_buf *m_sb_bp; /* buffer for superblock */ + struct xfs_buf *m_rtsb_bp; /* realtime superblock */ + char *m_rtname; /* realtime device name */ + char *m_logname; /* external log device name */ + struct xfs_da_geometry *m_dir_geo; /* directory block geometry */ + struct xfs_da_geometry *m_attr_geo; /* attribute block geometry */ + struct xlog *m_log; /* log specific stuff */ + struct xfs_inode *m_rootip; /* pointer to root directory */ + struct xfs_inode *m_metadirip; /* ptr to metadata directory */ + struct xfs_inode *m_rtdirip; /* ptr to realtime metadir */ + struct xfs_quotainfo *m_quotainfo; /* disk quota information */ + struct xfs_buftarg *m_ddev_targp; /* data device */ + struct xfs_buftarg *m_logdev_targp;/* log device */ + struct xfs_buftarg *m_rtdev_targp; /* rt device */ + void __percpu *m_inodegc; /* percpu inodegc structures */ + struct xfs_mru_cache *m_filestream; /* per-mount filestream data */ + struct workqueue_struct *m_buf_workqueue; + struct workqueue_struct *m_unwritten_workqueue; + struct workqueue_struct *m_reclaim_workqueue; + struct workqueue_struct *m_sync_workqueue; + struct workqueue_struct *m_blockgc_wq; + struct workqueue_struct *m_inodegc_wq; + + int m_bsize; /* fs logical block size */ + uint8_t m_blkbit_log; /* blocklog + NBBY */ + uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ + uint8_t m_agno_log; /* log #ag's */ + uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ + int8_t m_rtxblklog; /* log2 of rextsize, if possible */ + + uint m_blockmask; /* sb_blocksize-1 */ + uint m_blockwsize; /* sb_blocksize in words */ + /* number of rt extents per rt bitmap block if rtgroups enabled */ + unsigned int m_rtx_per_rbmblock; + uint m_alloc_mxr[2]; /* max alloc btree records */ + uint m_alloc_mnr[2]; /* min alloc btree records */ + uint m_bmap_dmxr[2]; /* max bmap btree records */ + uint m_bmap_dmnr[2]; /* min bmap btree records */ + uint m_rmap_mxr[2]; /* max rmap btree records */ + uint m_rmap_mnr[2]; /* min rmap btree records */ + uint m_rtrmap_mxr[2]; /* max rtrmap btree records */ + uint m_rtrmap_mnr[2]; /* min rtrmap btree records */ + uint m_refc_mxr[2]; /* max refc btree records */ + uint m_refc_mnr[2]; /* min refc btree records */ + uint m_rtrefc_mxr[2]; /* max rtrefc btree records */ + uint m_rtrefc_mnr[2]; /* min rtrefc btree records */ + uint m_alloc_maxlevels; /* max alloc btree levels */ + uint m_bm_maxlevels[2]; /* max bmap btree levels */ + uint m_rmap_maxlevels; /* max rmap btree levels */ + uint m_rtrmap_maxlevels; /* max rtrmap btree level */ + uint m_refc_maxlevels; /* max refcount btree level */ + uint m_rtrefc_maxlevels; /* max rtrefc btree level */ + unsigned int m_agbtree_maxlevels; /* max level of all AG btrees */ + unsigned int m_rtbtree_maxlevels; /* max level of all rt btrees */ + xfs_extlen_t m_ag_prealloc_blocks; /* reserved ag blocks */ + uint m_alloc_set_aside; /* space we can't use */ + uint m_ag_max_usable; /* max space per AG */ + int m_dalign; /* stripe unit */ + int m_swidth; /* stripe width */ + xfs_agnumber_t m_maxagi; /* highest inode alloc group */ + uint m_allocsize_log;/* min write size log bytes */ + uint m_allocsize_blocks; /* min write size blocks */ + int m_logbufs; /* number of log buffers */ + int m_logbsize; /* size of each log buffer */ + unsigned int m_rsumlevels; /* rt summary levels */ + xfs_filblks_t m_rsumblocks; /* size of rt summary, FSBs */ + int m_fixedfsid[2]; /* unchanged for life of FS */ + uint m_qflags; /* quota status flags */ + uint64_t m_features; /* active filesystem features */ + uint64_t m_low_space[XFS_LOWSP_MAX]; + uint64_t m_low_rtexts[XFS_LOWSP_MAX]; + uint64_t m_rtxblkmask; /* rt extent block mask */ + struct xfs_ino_geometry m_ino_geo; /* inode geometry */ + struct xfs_trans_resv m_resv; /* precomputed res values */ + /* low free space thresholds */ + unsigned long m_opstate; /* dynamic state flags */ + bool m_always_cow; + bool m_fail_unmount; + bool m_finobt_nores; /* no per-AG finobt resv. */ + bool m_update_sb; /* sb needs update in mount */ + unsigned int m_max_open_zones; + unsigned int m_zonegc_low_space; + + /* max_atomic_write mount option value */ + unsigned long long m_awu_max_bytes; + + /* + * Bitsets of per-fs metadata that have been checked and/or are sick. + * Callers must hold m_sb_lock to access these two fields. + */ + uint8_t m_fs_checked; + uint8_t m_fs_sick; + /* + * Bitsets of rt metadata that have been checked and/or are sick. + * Callers must hold m_sb_lock to access this field. + */ + uint8_t m_rt_checked; + uint8_t m_rt_sick; + + /* + * End of read-mostly variables. Frequently written variables and locks + * should be placed below this comment from now on. The first variable + * here is marked as cacheline aligned so they it is separated from + * the read-mostly variables. + */ + + spinlock_t ____cacheline_aligned m_sb_lock; /* sb counter lock */ + struct percpu_counter m_icount; /* allocated inodes counter */ + struct percpu_counter m_ifree; /* free inodes counter */ + + struct xfs_freecounter m_free[XC_FREE_NR]; + + /* + * Count of data device blocks reserved for delayed allocations, + * including indlen blocks. Does not include allocated CoW staging + * extents or anything related to the rt device. + */ + struct percpu_counter m_delalloc_blks; + + /* + * RT version of the above. + */ + struct percpu_counter m_delalloc_rtextents; + + /* + * Global count of allocation btree blocks in use across all AGs. Only + * used when perag reservation is enabled. Helps prevent block + * reservation from attempting to reserve allocation btree blocks. + */ + atomic64_t m_allocbt_blks; + + struct xfs_groups m_groups[XG_TYPE_MAX]; + struct delayed_work m_reclaim_work; /* background inode reclaim */ + struct xfs_zone_info *m_zone_info; /* zone allocator information */ + struct dentry *m_debugfs; /* debugfs parent */ + struct xfs_kobj m_kobj; + struct xfs_kobj m_error_kobj; + struct xfs_kobj m_error_meta_kobj; + struct xfs_error_cfg m_error_cfg[XFS_ERR_CLASS_MAX][XFS_ERR_ERRNO_MAX]; + struct xstats m_stats; /* per-fs stats */ +#ifdef CONFIG_XFS_ONLINE_SCRUB_STATS + struct xchk_stats *m_scrub_stats; +#endif + struct xfs_kobj m_zoned_kobj; + xfs_agnumber_t m_agfrotor; /* last ag where space found */ + atomic_t m_agirotor; /* last ag dir inode alloced */ + atomic_t m_rtgrotor; /* last rtgroup rtpicked */ + + struct mutex m_metafile_resv_lock; + uint64_t m_metafile_resv_target; + uint64_t m_metafile_resv_used; + uint64_t m_metafile_resv_avail; + + /* Memory shrinker to throttle and reprioritize inodegc */ + struct shrinker *m_inodegc_shrinker; + /* + * Workqueue item so that we can coalesce multiple inode flush attempts + * into a single flush. + */ + struct work_struct m_flush_inodes_work; + + /* + * Generation of the filesysyem layout. This is incremented by each + * growfs, and used by the pNFS server to ensure the client updates + * its view of the block device once it gets a layout that might + * reference the newly added blocks. Does not need to be persistent + * as long as we only allow file system size increments, but if we + * ever support shrinks it would have to be persisted in addition + * to various other kinds of pain inflicted on the pNFS server. + */ + uint32_t m_generation; + struct mutex m_growlock; /* growfs mutex */ + +#ifdef DEBUG + /* + * Frequency with which errors are injected. Replaces xfs_etest; the + * value stored in here is the inverse of the frequency with which the + * error triggers. 1 = always, 2 = half the time, etc. + */ + unsigned int *m_errortag; + struct xfs_kobj m_errortag_kobj; +#endif + + /* cpus that have inodes queued for inactivation */ + struct cpumask m_inodegc_cpumask; + + /* Hook to feed dirent updates to an active online repair. */ + struct xfs_hooks m_dir_update_hooks; + + /* Private data referring to a health monitor object. */ + struct xfs_healthmon __rcu *m_healthmon; + + /* Index of uuid record in the uuid xarray. */ + unsigned int m_uuid_table_index; + + /* + * Old io_pages/ra_pages valued in the main bdev BDI, and our initial + * calculated values. + */ + unsigned long m_old_io_pages, m_initial_io_pages; + unsigned long m_old_ra_pages, m_initial_ra_pages; +} xfs_mount_t; + +#define M_IGEO(mp) (&(mp)->m_ino_geo) + +/* + * Flags for m_features. + * + * These are all the active features in the filesystem, regardless of how + * they are configured. + */ +#define XFS_FEAT_ATTR (1ULL << 0) /* xattrs present in fs */ +#define XFS_FEAT_NLINK (1ULL << 1) /* 32 bit link counts */ +#define XFS_FEAT_QUOTA (1ULL << 2) /* quota active */ +#define XFS_FEAT_ALIGN (1ULL << 3) /* inode alignment */ +#define XFS_FEAT_DALIGN (1ULL << 4) /* data alignment */ +#define XFS_FEAT_LOGV2 (1ULL << 5) /* version 2 logs */ +#define XFS_FEAT_SECTOR (1ULL << 6) /* sector size > 512 bytes */ +#define XFS_FEAT_EXTFLG (1ULL << 7) /* unwritten extents */ +#define XFS_FEAT_ASCIICI (1ULL << 8) /* ASCII only case-insens. */ +#define XFS_FEAT_LAZYSBCOUNT (1ULL << 9) /* Superblk counters */ +#define XFS_FEAT_PARENT (1ULL << 11) /* parent pointers */ +#define XFS_FEAT_PROJID32 (1ULL << 12) /* 32 bit project id */ +#define XFS_FEAT_CRC (1ULL << 13) /* metadata CRCs */ +#define XFS_FEAT_V3INODES (1ULL << 14) /* Version 3 inodes */ +#define XFS_FEAT_PQUOTINO (1ULL << 15) /* non-shared proj/grp quotas */ +#define XFS_FEAT_FTYPE (1ULL << 16) /* inode type in dir */ +#define XFS_FEAT_FINOBT (1ULL << 17) /* free inode btree */ +#define XFS_FEAT_RMAPBT (1ULL << 18) /* reverse map btree */ +#define XFS_FEAT_REFLINK (1ULL << 19) /* reflinked files */ +#define XFS_FEAT_SPINODES (1ULL << 20) /* sparse inode chunks */ +#define XFS_FEAT_META_UUID (1ULL << 21) /* metadata UUID */ +#define XFS_FEAT_REALTIME (1ULL << 22) /* realtime device present */ +#define XFS_FEAT_INOBTCNT (1ULL << 23) /* inobt block counts */ +#define XFS_FEAT_BIGTIME (1ULL << 24) /* large timestamps */ +#define XFS_FEAT_NEEDSREPAIR (1ULL << 25) /* needs xfs_repair */ +#define XFS_FEAT_NREXT64 (1ULL << 26) /* large extent counters */ +#define XFS_FEAT_EXCHANGE_RANGE (1ULL << 27) /* exchange range */ +#define XFS_FEAT_METADIR (1ULL << 28) /* metadata directory tree */ +#define XFS_FEAT_ZONED (1ULL << 29) /* zoned RT device */ + +/* Mount features */ +#define XFS_FEAT_NOLIFETIME (1ULL << 47) /* disable lifetime hints */ +#define XFS_FEAT_NOALIGN (1ULL << 49) /* ignore alignment */ +#define XFS_FEAT_ALLOCSIZE (1ULL << 50) /* user specified allocation size */ +#define XFS_FEAT_LARGE_IOSIZE (1ULL << 51) /* report large preferred + * I/O size in stat() */ +#define XFS_FEAT_WSYNC (1ULL << 52) /* synchronous metadata ops */ +#define XFS_FEAT_DIRSYNC (1ULL << 53) /* synchronous directory ops */ +#define XFS_FEAT_DISCARD (1ULL << 54) /* discard unused blocks */ +#define XFS_FEAT_GRPID (1ULL << 55) /* group-ID assigned from directory */ +#define XFS_FEAT_SMALL_INUMS (1ULL << 56) /* user wants 32bit inodes */ +#define XFS_FEAT_SWALLOC (1ULL << 58) /* stripe width allocation */ +#define XFS_FEAT_FILESTREAMS (1ULL << 59) /* use filestreams allocator */ +#define XFS_FEAT_DAX_ALWAYS (1ULL << 60) /* DAX always enabled */ +#define XFS_FEAT_DAX_NEVER (1ULL << 61) /* DAX never enabled */ +#define XFS_FEAT_NORECOVERY (1ULL << 62) /* no recovery - dirty fs */ +#define XFS_FEAT_NOUUID (1ULL << 63) /* ignore uuid during mount */ + +#define __XFS_HAS_FEAT(name, NAME) \ +static inline bool xfs_has_ ## name (const struct xfs_mount *mp) \ +{ \ + return mp->m_features & XFS_FEAT_ ## NAME; \ +} + +/* Some features can be added dynamically so they need a set wrapper, too. */ +#define __XFS_ADD_FEAT(name, NAME) \ + __XFS_HAS_FEAT(name, NAME); \ +static inline void xfs_add_ ## name (struct xfs_mount *mp) \ +{ \ + mp->m_features |= XFS_FEAT_ ## NAME; \ + xfs_sb_version_add ## name(&mp->m_sb); \ +} + +/* Superblock features */ +__XFS_ADD_FEAT(attr, ATTR) +__XFS_HAS_FEAT(nlink, NLINK) +__XFS_ADD_FEAT(quota, QUOTA) +__XFS_HAS_FEAT(dalign, DALIGN) +__XFS_HAS_FEAT(sector, SECTOR) +__XFS_HAS_FEAT(asciici, ASCIICI) +__XFS_HAS_FEAT(parent, PARENT) +__XFS_HAS_FEAT(ftype, FTYPE) +__XFS_HAS_FEAT(finobt, FINOBT) +__XFS_HAS_FEAT(rmapbt, RMAPBT) +__XFS_HAS_FEAT(reflink, REFLINK) +__XFS_HAS_FEAT(sparseinodes, SPINODES) +__XFS_HAS_FEAT(metauuid, META_UUID) +__XFS_HAS_FEAT(realtime, REALTIME) +__XFS_HAS_FEAT(inobtcounts, INOBTCNT) +__XFS_HAS_FEAT(bigtime, BIGTIME) +__XFS_HAS_FEAT(needsrepair, NEEDSREPAIR) +__XFS_HAS_FEAT(large_extent_counts, NREXT64) +__XFS_HAS_FEAT(exchange_range, EXCHANGE_RANGE) +__XFS_HAS_FEAT(metadir, METADIR) +__XFS_HAS_FEAT(zoned, ZONED) +__XFS_HAS_FEAT(nolifetime, NOLIFETIME) + +static inline bool xfs_has_rtgroups(const struct xfs_mount *mp) +{ + /* all metadir file systems also allow rtgroups */ + return xfs_has_metadir(mp); +} + +static inline bool xfs_has_rtsb(const struct xfs_mount *mp) +{ + /* all rtgroups filesystems with an rt section have an rtsb */ + return xfs_has_rtgroups(mp) && + xfs_has_realtime(mp) && + !xfs_has_zoned(mp); +} + +static inline bool xfs_has_rtrmapbt(const struct xfs_mount *mp) +{ + return xfs_has_rtgroups(mp) && xfs_has_realtime(mp) && + xfs_has_rmapbt(mp); +} + +static inline bool xfs_has_rtreflink(const struct xfs_mount *mp) +{ + return xfs_has_metadir(mp) && xfs_has_realtime(mp) && + xfs_has_reflink(mp); +} + +static inline bool xfs_has_nonzoned(const struct xfs_mount *mp) +{ + return !xfs_has_zoned(mp); +} + +static inline bool xfs_can_sw_atomic_write(struct xfs_mount *mp) +{ + return xfs_has_reflink(mp); +} + +/* + * Some features are always on for v5 file systems, allow the compiler to + * eliminiate dead code when building without v4 support. + */ +#define __XFS_HAS_V4_FEAT(name, NAME) \ +static inline bool xfs_has_ ## name (struct xfs_mount *mp) \ +{ \ + return !IS_ENABLED(CONFIG_XFS_SUPPORT_V4) || \ + (mp->m_features & XFS_FEAT_ ## NAME); \ +} + +#define __XFS_ADD_V4_FEAT(name, NAME) \ + __XFS_HAS_V4_FEAT(name, NAME); \ +static inline void xfs_add_ ## name (struct xfs_mount *mp) \ +{ \ + if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) { \ + mp->m_features |= XFS_FEAT_ ## NAME; \ + xfs_sb_version_add ## name(&mp->m_sb); \ + } \ +} + +__XFS_HAS_V4_FEAT(align, ALIGN) +__XFS_HAS_V4_FEAT(logv2, LOGV2) +__XFS_HAS_V4_FEAT(extflg, EXTFLG) +__XFS_HAS_V4_FEAT(lazysbcount, LAZYSBCOUNT) +__XFS_ADD_V4_FEAT(projid32, PROJID32) +__XFS_HAS_V4_FEAT(v3inodes, V3INODES) +__XFS_HAS_V4_FEAT(crc, CRC) +__XFS_HAS_V4_FEAT(pquotino, PQUOTINO) + +static inline void xfs_add_attr2(struct xfs_mount *mp) +{ + if (IS_ENABLED(CONFIG_XFS_SUPPORT_V4)) + xfs_sb_version_addattr2(&mp->m_sb); +} + +/* + * Mount features + * + * These do not change dynamically - features that can come and go, such as 32 + * bit inodes and read-only state, are kept as operational state rather than + * features. + */ +__XFS_HAS_FEAT(noalign, NOALIGN) +__XFS_HAS_FEAT(allocsize, ALLOCSIZE) +__XFS_HAS_FEAT(large_iosize, LARGE_IOSIZE) +__XFS_HAS_FEAT(wsync, WSYNC) +__XFS_HAS_FEAT(dirsync, DIRSYNC) +__XFS_HAS_FEAT(discard, DISCARD) +__XFS_HAS_FEAT(grpid, GRPID) +__XFS_HAS_FEAT(small_inums, SMALL_INUMS) +__XFS_HAS_FEAT(swalloc, SWALLOC) +__XFS_HAS_FEAT(filestreams, FILESTREAMS) +__XFS_HAS_FEAT(dax_always, DAX_ALWAYS) +__XFS_HAS_FEAT(dax_never, DAX_NEVER) +__XFS_HAS_FEAT(norecovery, NORECOVERY) +__XFS_HAS_FEAT(nouuid, NOUUID) + +/* + * Operational mount state flags + * + * Use these with atomic bit ops only! + */ +#define XFS_OPSTATE_UNMOUNTING 0 /* filesystem is unmounting */ +#define XFS_OPSTATE_CLEAN 1 /* mount was clean */ +#define XFS_OPSTATE_SHUTDOWN 2 /* stop all fs operations */ +#define XFS_OPSTATE_INODE32 3 /* inode32 allocator active */ +#define XFS_OPSTATE_READONLY 4 /* read-only fs */ + +/* + * If set, inactivation worker threads will be scheduled to process queued + * inodegc work. If not, queued inodes remain in memory waiting to be + * processed. + */ +#define XFS_OPSTATE_INODEGC_ENABLED 5 +/* + * If set, background speculative prealloc gc worker threads will be scheduled + * to process queued blockgc work. If not, inodes retain their preallocations + * until explicitly deleted. + */ +#define XFS_OPSTATE_BLOCKGC_ENABLED 6 + +/* Kernel has logged a warning about shrink being used on this fs. */ +#define XFS_OPSTATE_WARNED_SHRINK 9 +/* Kernel has logged a warning about logged xattr updates being used. */ +#define XFS_OPSTATE_WARNED_LARP 10 +/* Mount time quotacheck is running */ +#define XFS_OPSTATE_QUOTACHECK_RUNNING 11 +/* Do we want to clear log incompat flags? */ +#define XFS_OPSTATE_UNSET_LOG_INCOMPAT 12 +/* Filesystem can use logged extended attributes */ +#define XFS_OPSTATE_USE_LARP 13 +/* Kernel has logged a warning about blocksize > pagesize on this fs. */ +#define XFS_OPSTATE_WARNED_LBS 14 +/* Kernel has logged a warning about metadata dirs being used on this fs. */ +#define XFS_OPSTATE_WARNED_METADIR 17 +/* Filesystem should use qflags to determine quotaon status */ +#define XFS_OPSTATE_RESUMING_QUOTAON 18 +/* (Zoned) GC is in progress */ +#define XFS_OPSTATE_ZONEGC_RUNNING 20 + +#define __XFS_IS_OPSTATE(name, NAME) \ +static inline bool xfs_is_ ## name (struct xfs_mount *mp) \ +{ \ + return test_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ +} \ +static inline bool xfs_clear_ ## name (struct xfs_mount *mp) \ +{ \ + return test_and_clear_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ +} \ +static inline bool xfs_set_ ## name (struct xfs_mount *mp) \ +{ \ + return test_and_set_bit(XFS_OPSTATE_ ## NAME, &mp->m_opstate); \ +} + +__XFS_IS_OPSTATE(unmounting, UNMOUNTING) +__XFS_IS_OPSTATE(clean, CLEAN) +__XFS_IS_OPSTATE(shutdown, SHUTDOWN) +__XFS_IS_OPSTATE(inode32, INODE32) +__XFS_IS_OPSTATE(readonly, READONLY) +__XFS_IS_OPSTATE(inodegc_enabled, INODEGC_ENABLED) +__XFS_IS_OPSTATE(blockgc_enabled, BLOCKGC_ENABLED) +#ifdef CONFIG_XFS_QUOTA +__XFS_IS_OPSTATE(quotacheck_running, QUOTACHECK_RUNNING) +__XFS_IS_OPSTATE(resuming_quotaon, RESUMING_QUOTAON) +#else +static inline bool xfs_is_quotacheck_running(struct xfs_mount *mp) +{ + return false; +} +static inline bool xfs_is_resuming_quotaon(struct xfs_mount *mp) +{ + return false; +} +static inline void xfs_set_resuming_quotaon(struct xfs_mount *m) +{ +} +static inline bool xfs_clear_resuming_quotaon(struct xfs_mount *mp) +{ + return false; +} +#endif /* CONFIG_XFS_QUOTA */ +__XFS_IS_OPSTATE(done_with_log_incompat, UNSET_LOG_INCOMPAT) +__XFS_IS_OPSTATE(using_logged_xattrs, USE_LARP) +__XFS_IS_OPSTATE(zonegc_running, ZONEGC_RUNNING) + +static inline bool +xfs_should_warn(struct xfs_mount *mp, long nr) +{ + return !test_and_set_bit(nr, &mp->m_opstate); +} + +#define XFS_OPSTATE_STRINGS \ + { (1UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \ + { (1UL << XFS_OPSTATE_CLEAN), "clean" }, \ + { (1UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \ + { (1UL << XFS_OPSTATE_INODE32), "inode32" }, \ + { (1UL << XFS_OPSTATE_READONLY), "read_only" }, \ + { (1UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \ + { (1UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \ + { (1UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \ + { (1UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \ + { (1UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \ + { (1UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \ + { (1UL << XFS_OPSTATE_USE_LARP), "logged_xattrs" } + +/* + * Max and min values for mount-option defined I/O + * preallocation sizes. + */ +#define XFS_MAX_IO_LOG 30 /* 1G */ +#define XFS_MIN_IO_LOG PAGE_SHIFT + +void xfs_do_force_shutdown(struct xfs_mount *mp, uint32_t flags, char *fname, + int lnnum); +#define xfs_force_shutdown(m,f) \ + xfs_do_force_shutdown(m, f, __FILE__, __LINE__) + +#define SHUTDOWN_META_IO_ERROR (1u << 0) /* write attempt to metadata failed */ +#define SHUTDOWN_LOG_IO_ERROR (1u << 1) /* write attempt to the log failed */ +#define SHUTDOWN_FORCE_UMOUNT (1u << 2) /* shutdown from a forced unmount */ +#define SHUTDOWN_CORRUPT_INCORE (1u << 3) /* corrupt in-memory structures */ +#define SHUTDOWN_CORRUPT_ONDISK (1u << 4) /* corrupt metadata on device */ +#define SHUTDOWN_DEVICE_REMOVED (1u << 5) /* device removed underneath us */ + +#define XFS_SHUTDOWN_STRINGS \ + { SHUTDOWN_META_IO_ERROR, "metadata_io" }, \ + { SHUTDOWN_LOG_IO_ERROR, "log_io" }, \ + { SHUTDOWN_FORCE_UMOUNT, "force_umount" }, \ + { SHUTDOWN_CORRUPT_INCORE, "corruption" }, \ + { SHUTDOWN_DEVICE_REMOVED, "device_removed" } + +/* + * Flags for xfs_mountfs + */ +#define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ + +static inline xfs_agnumber_t +xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) +{ + xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); + do_div(ld, mp->m_sb.sb_agblocks); + return (xfs_agnumber_t) ld; +} + +static inline xfs_agblock_t +xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) +{ + xfs_rfsblock_t ld = XFS_BB_TO_FSBT(mp, d); + return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); +} + +extern void xfs_uuid_table_free(void); +uint64_t xfs_default_resblks(struct xfs_mount *mp, + enum xfs_free_counter ctr); +extern int xfs_mountfs(xfs_mount_t *mp); +extern void xfs_unmountfs(xfs_mount_t *); + +/* + * Deltas for the block count can vary from 1 to very large, but lock contention + * only occurs on frequent small block count updates such as in the delayed + * allocation path for buffered writes (page a time updates). Hence we set + * a large batch count (1024) to minimise global counter updates except when + * we get near to ENOSPC and we have to be very accurate with our updates. + */ +#define XFS_FDBLOCKS_BATCH 1024 + +uint64_t xfs_freecounter_unavailable(struct xfs_mount *mp, + enum xfs_free_counter ctr); + +/* + * Sum up the freecount, but never return negative values. + */ +static inline s64 xfs_sum_freecounter(struct xfs_mount *mp, + enum xfs_free_counter ctr) +{ + return percpu_counter_sum_positive(&mp->m_free[ctr].count); +} + +/* + * Same as above, but does return negative values. Mostly useful for + * special cases like repair and tracing. + */ +static inline s64 xfs_sum_freecounter_raw(struct xfs_mount *mp, + enum xfs_free_counter ctr) +{ + return percpu_counter_sum(&mp->m_free[ctr].count); +} + +/* + * This just provides and estimate without the cpu-local updates, use + * xfs_sum_freecounter for the exact value. + */ +static inline s64 xfs_estimate_freecounter(struct xfs_mount *mp, + enum xfs_free_counter ctr) +{ + return percpu_counter_read_positive(&mp->m_free[ctr].count); +} + +static inline int xfs_compare_freecounter(struct xfs_mount *mp, + enum xfs_free_counter ctr, s64 rhs, s32 batch) +{ + return __percpu_counter_compare(&mp->m_free[ctr].count, rhs, batch); +} + +static inline void xfs_set_freecounter(struct xfs_mount *mp, + enum xfs_free_counter ctr, uint64_t val) +{ + percpu_counter_set(&mp->m_free[ctr].count, val); +} + +int xfs_dec_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, + uint64_t delta, bool rsvd); +void xfs_add_freecounter(struct xfs_mount *mp, enum xfs_free_counter ctr, + uint64_t delta); + +static inline int xfs_dec_fdblocks(struct xfs_mount *mp, uint64_t delta, + bool reserved) +{ + return xfs_dec_freecounter(mp, XC_FREE_BLOCKS, delta, reserved); +} + +static inline void xfs_add_fdblocks(struct xfs_mount *mp, uint64_t delta) +{ + xfs_add_freecounter(mp, XC_FREE_BLOCKS, delta); +} + +static inline int xfs_dec_frextents(struct xfs_mount *mp, uint64_t delta) +{ + return xfs_dec_freecounter(mp, XC_FREE_RTEXTENTS, delta, false); +} + +static inline void xfs_add_frextents(struct xfs_mount *mp, uint64_t delta) +{ + xfs_add_freecounter(mp, XC_FREE_RTEXTENTS, delta); +} + +extern int xfs_readsb(xfs_mount_t *, int); +extern void xfs_freesb(xfs_mount_t *); +extern bool xfs_fs_writable(struct xfs_mount *mp, int level); +extern int xfs_sb_validate_fsb_count(struct xfs_sb *, uint64_t); + +extern int xfs_dev_is_read_only(struct xfs_mount *, char *); + +extern void xfs_set_low_space_thresholds(struct xfs_mount *); + +int xfs_zero_extent(struct xfs_inode *ip, xfs_fsblock_t start_fsb, + xfs_off_t count_fsb); + +struct xfs_error_cfg * xfs_error_get_cfg(struct xfs_mount *mp, + int error_class, int error); +void xfs_force_summary_recalc(struct xfs_mount *mp); +int xfs_add_incompat_log_feature(struct xfs_mount *mp, uint32_t feature); +bool xfs_clear_incompat_log_features(struct xfs_mount *mp); +void xfs_mod_delalloc(struct xfs_inode *ip, int64_t data_delta, + int64_t ind_delta); +static inline void xfs_mod_sb_delalloc(struct xfs_mount *mp, int64_t delta) +{ + percpu_counter_add(&mp->m_delalloc_blks, delta); +} + +int xfs_set_max_atomic_write_opt(struct xfs_mount *mp, + unsigned long long new_max_bytes); + +static inline struct xfs_buftarg * +xfs_group_type_buftarg( + struct xfs_mount *mp, + enum xfs_group_type type) +{ + switch (type) { + case XG_TYPE_AG: + return mp->m_ddev_targp; + case XG_TYPE_RTG: + return mp->m_rtdev_targp; + default: + ASSERT(0); + break; + } + return NULL; +} + +#endif /* __XFS_MOUNT_H__ */ |