123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461 |
- #ifndef __XFS_MOUNT_H__
- #define __XFS_MOUNT_H__
- struct xlog;
- struct xfs_inode;
- struct xfs_mru_cache;
- struct xfs_nameops;
- struct xfs_ail;
- struct xfs_quotainfo;
- struct xfs_dir_ops;
- struct xfs_da_geometry;
- 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,
- };
- 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
- struct xfs_error_cfg {
- struct xfs_kobj kobj;
- int max_retries;
- long retry_timeout;
- };
- typedef struct xfs_mount {
- struct super_block *m_super;
- xfs_tid_t m_tid;
- struct xfs_ail *m_ail;
- struct xfs_sb m_sb;
- spinlock_t m_sb_lock;
- struct percpu_counter m_icount;
- struct percpu_counter m_ifree;
- struct percpu_counter m_fdblocks;
- struct xfs_buf *m_sb_bp;
- char *m_fsname;
- int m_fsname_len;
- char *m_rtname;
- char *m_logname;
- int m_bsize;
- xfs_agnumber_t m_agfrotor;
- xfs_agnumber_t m_agirotor;
- spinlock_t m_agirotor_lock;
- xfs_agnumber_t m_maxagi;
- uint m_readio_log;
- uint m_readio_blocks;
- uint m_writeio_log;
- uint m_writeio_blocks;
- struct xfs_da_geometry *m_dir_geo;
- struct xfs_da_geometry *m_attr_geo;
- struct xlog *m_log;
- int m_logbufs;
- int m_logbsize;
- uint m_rsumlevels;
- uint m_rsumsize;
- struct xfs_inode *m_rbmip;
- struct xfs_inode *m_rsumip;
- struct xfs_inode *m_rootip;
- struct xfs_quotainfo *m_quotainfo;
- xfs_buftarg_t *m_ddev_targp;
- xfs_buftarg_t *m_logdev_targp;
- xfs_buftarg_t *m_rtdev_targp;
- __uint8_t m_blkbit_log;
- __uint8_t m_blkbb_log;
- __uint8_t m_agno_log;
- __uint8_t m_agino_log;
- uint m_inode_cluster_size;
- uint m_blockmask;
- uint m_blockwsize;
- uint m_blockwmask;
- uint m_alloc_mxr[2];
- uint m_alloc_mnr[2];
- uint m_bmap_dmxr[2];
- uint m_bmap_dmnr[2];
- uint m_inobt_mxr[2];
- uint m_inobt_mnr[2];
- uint m_rmap_mxr[2];
- uint m_rmap_mnr[2];
- uint m_refc_mxr[2];
- uint m_refc_mnr[2];
- uint m_ag_maxlevels;
- uint m_bm_maxlevels[2];
- uint m_in_maxlevels;
- uint m_rmap_maxlevels;
- uint m_refc_maxlevels;
- xfs_extlen_t m_ag_prealloc_blocks;
- uint m_alloc_set_aside;
- uint m_ag_max_usable;
- struct radix_tree_root m_perag_tree;
- spinlock_t m_perag_lock;
- struct mutex m_growlock;
- int m_fixedfsid[2];
- uint m_dmevmask;
- __uint64_t m_flags;
- bool m_inotbt_nores;
- int m_ialloc_inos;
- int m_ialloc_blks;
- int m_ialloc_min_blks;
- int m_inoalign_mask;
- uint m_qflags;
- struct xfs_trans_resv m_resv;
- __uint64_t m_maxicount;
- __uint64_t m_resblks;
- __uint64_t m_resblks_avail;
- __uint64_t m_resblks_save;
- int m_dalign;
- int m_swidth;
- int m_sinoalign;
- __uint8_t m_sectbb_log;
- const struct xfs_nameops *m_dirnameops;
- const struct xfs_dir_ops *m_dir_inode_ops;
- const struct xfs_dir_ops *m_nondir_inode_ops;
- uint m_chsize;
- atomic_t m_active_trans;
- struct xfs_mru_cache *m_filestream;
- struct delayed_work m_reclaim_work;
- struct delayed_work m_eofblocks_work;
- struct delayed_work m_cowblocks_work;
- bool m_update_sb;
- int64_t m_low_space[XFS_LOWSP_MAX];
-
- 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;
- struct workqueue_struct *m_buf_workqueue;
- struct workqueue_struct *m_data_workqueue;
- struct workqueue_struct *m_unwritten_workqueue;
- struct workqueue_struct *m_cil_workqueue;
- struct workqueue_struct *m_reclaim_workqueue;
- struct workqueue_struct *m_log_workqueue;
- struct workqueue_struct *m_eofblocks_workqueue;
- struct workqueue_struct *m_sync_workqueue;
-
- __uint32_t m_generation;
- bool m_fail_unmount;
- #ifdef DEBUG
-
- bool m_fail_writes;
- #endif
- } xfs_mount_t;
- #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
- must be synchronous except
- for space allocations */
- #define XFS_MOUNT_UNMOUNTING (1ULL << 1) /* filesystem is unmounting */
- #define XFS_MOUNT_WAS_CLEAN (1ULL << 3)
- #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem
- operations, typically for
- disk errors in metadata */
- #define XFS_MOUNT_DISCARD (1ULL << 5) /* discard unused blocks */
- #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment
- allocations */
- #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */
- #define XFS_MOUNT_GRPID (1ULL << 9) /* group-ID assigned from directory */
- #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */
- #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */
- #define XFS_MOUNT_SMALL_INUMS (1ULL << 14) /* user wants 32bit inodes */
- #define XFS_MOUNT_32BITINODES (1ULL << 15) /* inode32 allocator active */
- #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */
- #define XFS_MOUNT_BARRIER (1ULL << 17)
- #define XFS_MOUNT_IKEEP (1ULL << 18) /* keep empty inode clusters*/
- #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width
- * allocation */
- #define XFS_MOUNT_RDONLY (1ULL << 20) /* read-only fs */
- #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */
- #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred
- * I/O size in stat() */
- #define XFS_MOUNT_FILESTREAMS (1ULL << 24)
- #define XFS_MOUNT_NOATTR2 (1ULL << 25)
- #define XFS_MOUNT_DAX (1ULL << 62)
- #define XFS_READIO_LOG_LARGE 16
- #define XFS_WRITEIO_LOG_LARGE 16
- #define XFS_MAX_IO_LOG 30
- #define XFS_MIN_IO_LOG PAGE_SHIFT
- #define XFS_WSYNC_READIO_LOG 15
- #define XFS_WSYNC_WRITEIO_LOG 14
- static inline unsigned long
- xfs_preferred_iosize(xfs_mount_t *mp)
- {
- if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
- return PAGE_SIZE;
- return (mp->m_swidth ?
- (mp->m_swidth << mp->m_sb.sb_blocklog) :
- ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ?
- (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) :
- PAGE_SIZE));
- }
- #define XFS_LAST_UNMOUNT_WAS_CLEAN(mp) \
- ((mp)->m_flags & XFS_MOUNT_WAS_CLEAN)
- #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN)
- void xfs_do_force_shutdown(struct xfs_mount *mp, int flags, char *fname,
- int lnnum);
- #define xfs_force_shutdown(m,f) \
- xfs_do_force_shutdown(m, f, __FILE__, __LINE__)
- #define SHUTDOWN_META_IO_ERROR 0x0001 /* write attempt to metadata failed */
- #define SHUTDOWN_LOG_IO_ERROR 0x0002 /* write attempt to the log failed */
- #define SHUTDOWN_FORCE_UMOUNT 0x0004 /* shutdown from a forced unmount */
- #define SHUTDOWN_CORRUPT_INCORE 0x0008 /* corrupt in-memory data structures */
- #define SHUTDOWN_REMOTE_REQ 0x0010 /* shutdown came from remote cell */
- #define SHUTDOWN_DEVICE_REQ 0x0020 /* failed all paths to the device */
- #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_daddr_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_daddr_t ld = XFS_BB_TO_FSBT(mp, d);
- return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks);
- }
- #ifdef DEBUG
- static inline bool
- xfs_mp_fail_writes(struct xfs_mount *mp)
- {
- return mp->m_fail_writes;
- }
- #else
- static inline bool
- xfs_mp_fail_writes(struct xfs_mount *mp)
- {
- return 0;
- }
- #endif
- enum xfs_ag_resv_type {
- XFS_AG_RESV_NONE = 0,
- XFS_AG_RESV_METADATA,
- XFS_AG_RESV_AGFL,
- };
- struct xfs_ag_resv {
-
- xfs_extlen_t ar_orig_reserved;
-
- xfs_extlen_t ar_reserved;
-
- xfs_extlen_t ar_asked;
- };
- typedef struct xfs_perag {
- struct xfs_mount *pag_mount;
- xfs_agnumber_t pag_agno;
- atomic_t pag_ref;
- char pagf_init;
- char pagi_init;
- char pagf_metadata;
- char pagi_inodeok;
- __uint8_t pagf_levels[XFS_BTNUM_AGF];
-
- bool pagf_agflreset;
- __uint32_t pagf_flcount;
- xfs_extlen_t pagf_freeblks;
- xfs_extlen_t pagf_longest;
- __uint32_t pagf_btreeblks;
- xfs_agino_t pagi_freecount;
- xfs_agino_t pagi_count;
-
- xfs_agino_t pagl_pagino;
- xfs_agino_t pagl_leftrec;
- xfs_agino_t pagl_rightrec;
- spinlock_t pagb_lock;
- struct rb_root pagb_tree;
- atomic_t pagf_fstrms;
- spinlock_t pag_ici_lock;
- struct radix_tree_root pag_ici_root;
- int pag_ici_reclaimable;
- struct mutex pag_ici_reclaim_lock;
- unsigned long pag_ici_reclaim_cursor;
-
- spinlock_t pag_buf_lock;
- struct rb_root pag_buf_tree;
-
- struct rcu_head rcu_head;
- int pagb_count;
-
- struct xfs_ag_resv pag_meta_resv;
-
- struct xfs_ag_resv pag_agfl_resv;
-
- __uint8_t pagf_refcount_level;
- } xfs_perag_t;
- static inline struct xfs_ag_resv *
- xfs_perag_resv(
- struct xfs_perag *pag,
- enum xfs_ag_resv_type type)
- {
- switch (type) {
- case XFS_AG_RESV_METADATA:
- return &pag->pag_meta_resv;
- case XFS_AG_RESV_AGFL:
- return &pag->pag_agfl_resv;
- default:
- return NULL;
- }
- }
- extern void xfs_uuid_table_free(void);
- extern int xfs_log_sbcount(xfs_mount_t *);
- extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
- extern int xfs_mountfs(xfs_mount_t *mp);
- extern int xfs_initialize_perag(xfs_mount_t *mp, xfs_agnumber_t agcount,
- xfs_agnumber_t *maxagi);
- extern void xfs_unmountfs(xfs_mount_t *);
- extern int xfs_mod_icount(struct xfs_mount *mp, int64_t delta);
- extern int xfs_mod_ifree(struct xfs_mount *mp, int64_t delta);
- extern int xfs_mod_fdblocks(struct xfs_mount *mp, int64_t delta,
- bool reserved);
- extern int xfs_mod_frextents(struct xfs_mount *mp, int64_t delta);
- extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int);
- 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);
- #endif /* __XFS_MOUNT_H__ */
|