// 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;
/* 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;
struct xfs_mru_cache *m_zone_cache; /* Inode to open zone cache */
/* 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;
} 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 (1 ULL << 0 ) /* xattrs present in fs */
#define XFS_FEAT_NLINK (1 ULL << 1 ) /* 32 bit link counts */
#define XFS_FEAT_QUOTA (1 ULL << 2 ) /* quota active */
#define XFS_FEAT_ALIGN (1 ULL << 3 ) /* inode alignment */
#define XFS_FEAT_DALIGN (1 ULL << 4 ) /* data alignment */
#define XFS_FEAT_LOGV2 (1 ULL << 5 ) /* version 2 logs */
#define XFS_FEAT_SECTOR (1 ULL << 6 ) /* sector size > 512 bytes */
#define XFS_FEAT_EXTFLG (1 ULL << 7 ) /* unwritten extents */
#define XFS_FEAT_ASCIICI (1 ULL << 8 ) /* ASCII only case-insens. */
#define XFS_FEAT_LAZYSBCOUNT (1 ULL << 9 ) /* Superblk counters */
#define XFS_FEAT_ATTR2 (1 ULL << 10 ) /* dynamic attr fork */
#define XFS_FEAT_PARENT (1 ULL << 11 ) /* parent pointers */
#define XFS_FEAT_PROJID32 (1 ULL << 12 ) /* 32 bit project id */
#define XFS_FEAT_CRC (1 ULL << 13 ) /* metadata CRCs */
#define XFS_FEAT_V3INODES (1 ULL << 14 ) /* Version 3 inodes */
#define XFS_FEAT_PQUOTINO (1 ULL << 15 ) /* non-shared proj/grp quotas */
#define XFS_FEAT_FTYPE (1 ULL << 16 ) /* inode type in dir */
#define XFS_FEAT_FINOBT (1 ULL << 17 ) /* free inode btree */
#define XFS_FEAT_RMAPBT (1 ULL << 18 ) /* reverse map btree */
#define XFS_FEAT_REFLINK (1 ULL << 19 ) /* reflinked files */
#define XFS_FEAT_SPINODES (1 ULL << 20 ) /* sparse inode chunks */
#define XFS_FEAT_META_UUID (1 ULL << 21 ) /* metadata UUID */
#define XFS_FEAT_REALTIME (1 ULL << 22 ) /* realtime device present */
#define XFS_FEAT_INOBTCNT (1 ULL << 23 ) /* inobt block counts */
#define XFS_FEAT_BIGTIME (1 ULL << 24 ) /* large timestamps */
#define XFS_FEAT_NEEDSREPAIR (1 ULL << 25 ) /* needs xfs_repair */
#define XFS_FEAT_NREXT64 (1 ULL << 26 ) /* large extent counters */
#define XFS_FEAT_EXCHANGE_RANGE (1 ULL << 27 ) /* exchange range */
#define XFS_FEAT_METADIR (1 ULL << 28 ) /* metadata directory tree */
#define XFS_FEAT_ZONED (1 ULL << 29 ) /* zoned RT device */
/* Mount features */
#define XFS_FEAT_NOLIFETIME (1 ULL << 47 ) /* disable lifetime hints */
#define XFS_FEAT_NOATTR2 (1 ULL << 48 ) /* disable attr2 creation */
#define XFS_FEAT_NOALIGN (1 ULL << 49 ) /* ignore alignment */
#define XFS_FEAT_ALLOCSIZE (1 ULL << 50 ) /* user specified allocation size */
#define XFS_FEAT_LARGE_IOSIZE (1 ULL << 51 ) /* report large preferred
* I/O size in stat() */
#define XFS_FEAT_WSYNC (1 ULL << 52 ) /* synchronous metadata ops */
#define XFS_FEAT_DIRSYNC (1 ULL << 53 ) /* synchronous directory ops */
#define XFS_FEAT_DISCARD (1 ULL << 54 ) /* discard unused blocks */
#define XFS_FEAT_GRPID (1 ULL << 55 ) /* group-ID assigned from directory */
#define XFS_FEAT_SMALL_INUMS (1 ULL << 56 ) /* user wants 32bit inodes */
#define XFS_FEAT_IKEEP (1 ULL << 57 ) /* keep empty inode clusters*/
#define XFS_FEAT_SWALLOC (1 ULL << 58 ) /* stripe width allocation */
#define XFS_FEAT_FILESTREAMS (1 ULL << 59 ) /* use filestreams allocator */
#define XFS_FEAT_DAX_ALWAYS (1 ULL << 60 ) /* DAX always enabled */
#define XFS_FEAT_DAX_NEVER (1 ULL << 61 ) /* DAX never enabled */
#define XFS_FEAT_NORECOVERY (1 ULL << 62 ) /* no recovery - dirty fs */
#define XFS_FEAT_NOUUID (1 ULL << 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(attr2, ATTR2)
__XFS_ADD_V4_FEAT(projid32, PROJID32)
__XFS_HAS_V4_FEAT(v3inodes, V3INODES)
__XFS_HAS_V4_FEAT(crc, CRC)
__XFS_HAS_V4_FEAT(pquotino, PQUOTINO)
/*
* 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(noattr2, NOATTR2)
__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(ikeep, IKEEP)
__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
/* Kernel has logged a warning about zoned RT device being used on this fs. */
#define XFS_OPSTATE_WARNED_ZONED 19
/* (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 \
{ (1 UL << XFS_OPSTATE_UNMOUNTING), "unmounting" }, \
{ (1 UL << XFS_OPSTATE_CLEAN), "clean" }, \
{ (1 UL << XFS_OPSTATE_SHUTDOWN), "shutdown" }, \
{ (1 UL << XFS_OPSTATE_INODE32), "inode32" }, \
{ (1 UL << XFS_OPSTATE_READONLY), "read_only" }, \
{ (1 UL << XFS_OPSTATE_INODEGC_ENABLED), "inodegc" }, \
{ (1 UL << XFS_OPSTATE_BLOCKGC_ENABLED), "blockgc" }, \
{ (1 UL << XFS_OPSTATE_WARNED_SHRINK), "wshrink" }, \
{ (1 UL << XFS_OPSTATE_WARNED_LARP), "wlarp" }, \
{ (1 UL << XFS_OPSTATE_QUOTACHECK_RUNNING), "quotacheck" }, \
{ (1 UL << XFS_OPSTATE_UNSET_LOG_INCOMPAT), "unset_log_incompat" }, \
{ (1 UL << 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 (1 u << 0 ) /* write attempt to metadata failed */
#define SHUTDOWN_LOG_IO_ERROR (1 u << 1 ) /* write attempt to the log failed */
#define SHUTDOWN_FORCE_UMOUNT (1 u << 2 ) /* shutdown from a forced unmount */
#define SHUTDOWN_CORRUPT_INCORE (1 u << 3 ) /* corrupt in-memory structures */
#define SHUTDOWN_CORRUPT_ONDISK (1 u << 4 ) /* corrupt metadata on device */
#define SHUTDOWN_DEVICE_REMOVED (1 u << 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 0 x40 /* 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__ */
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