388 lines
15 KiB
C
388 lines
15 KiB
C
/*
|
|
* Copyright (c) 2000-2005 Silicon Graphics, Inc.
|
|
* All Rights Reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope that it would be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#ifndef __XFS_MOUNT_H__
|
|
#define __XFS_MOUNT_H__
|
|
|
|
typedef struct xfs_trans_reservations {
|
|
uint tr_write; /* extent alloc trans */
|
|
uint tr_itruncate; /* truncate trans */
|
|
uint tr_rename; /* rename trans */
|
|
uint tr_link; /* link trans */
|
|
uint tr_remove; /* unlink trans */
|
|
uint tr_symlink; /* symlink trans */
|
|
uint tr_create; /* create trans */
|
|
uint tr_mkdir; /* mkdir trans */
|
|
uint tr_ifree; /* inode free trans */
|
|
uint tr_ichange; /* inode update trans */
|
|
uint tr_growdata; /* fs data section grow trans */
|
|
uint tr_swrite; /* sync write inode trans */
|
|
uint tr_addafork; /* cvt inode to attributed trans */
|
|
uint tr_writeid; /* write setuid/setgid file */
|
|
uint tr_attrinval; /* attr fork buffer invalidation */
|
|
uint tr_attrset; /* set/create an attribute */
|
|
uint tr_attrrm; /* remove an attribute */
|
|
uint tr_clearagi; /* clear bad agi unlinked ino bucket */
|
|
uint tr_growrtalloc; /* grow realtime allocations */
|
|
uint tr_growrtzero; /* grow realtime zeroing */
|
|
uint tr_growrtfree; /* grow realtime freeing */
|
|
} xfs_trans_reservations_t;
|
|
|
|
#ifndef __KERNEL__
|
|
|
|
#define xfs_daddr_to_agno(mp,d) \
|
|
((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks))
|
|
#define xfs_daddr_to_agbno(mp,d) \
|
|
((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks))
|
|
|
|
#else /* __KERNEL__ */
|
|
|
|
#include "xfs_sync.h"
|
|
|
|
struct cred;
|
|
struct log;
|
|
struct xfs_mount_args;
|
|
struct xfs_inode;
|
|
struct xfs_bmbt_irec;
|
|
struct xfs_bmap_free;
|
|
struct xfs_extdelta;
|
|
struct xfs_swapext;
|
|
struct xfs_mru_cache;
|
|
struct xfs_nameops;
|
|
struct xfs_ail;
|
|
struct xfs_quotainfo;
|
|
|
|
#ifdef HAVE_PERCPU_SB
|
|
|
|
/*
|
|
* Valid per-cpu incore superblock counters. Note that if you add new counters,
|
|
* you may need to define new counter disabled bit field descriptors as there
|
|
* are more possible fields in the superblock that can fit in a bitfield on a
|
|
* 32 bit platform. The XFS_SBS_* values for the current current counters just
|
|
* fit.
|
|
*/
|
|
typedef struct xfs_icsb_cnts {
|
|
uint64_t icsb_fdblocks;
|
|
uint64_t icsb_ifree;
|
|
uint64_t icsb_icount;
|
|
unsigned long icsb_flags;
|
|
} xfs_icsb_cnts_t;
|
|
|
|
#define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */
|
|
|
|
#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */
|
|
|
|
extern int xfs_icsb_init_counters(struct xfs_mount *);
|
|
extern void xfs_icsb_reinit_counters(struct xfs_mount *);
|
|
extern void xfs_icsb_destroy_counters(struct xfs_mount *);
|
|
extern void xfs_icsb_sync_counters(struct xfs_mount *, int);
|
|
extern void xfs_icsb_sync_counters_locked(struct xfs_mount *, int);
|
|
|
|
#else
|
|
#define xfs_icsb_init_counters(mp) (0)
|
|
#define xfs_icsb_destroy_counters(mp) do { } while (0)
|
|
#define xfs_icsb_reinit_counters(mp) do { } while (0)
|
|
#define xfs_icsb_sync_counters(mp, flags) do { } while (0)
|
|
#define xfs_icsb_sync_counters_locked(mp, flags) do { } while (0)
|
|
#endif
|
|
|
|
typedef struct xfs_mount {
|
|
struct super_block *m_super;
|
|
xfs_tid_t m_tid; /* next unused tid for fs */
|
|
struct xfs_ail *m_ail; /* fs active log item list */
|
|
xfs_sb_t m_sb; /* copy of fs superblock */
|
|
spinlock_t m_sb_lock; /* sb counter lock */
|
|
struct xfs_buf *m_sb_bp; /* buffer for superblock */
|
|
char *m_fsname; /* filesystem name */
|
|
int m_fsname_len; /* strlen of fs name */
|
|
char *m_rtname; /* realtime device name */
|
|
char *m_logname; /* external log device name */
|
|
int m_bsize; /* fs logical block size */
|
|
xfs_agnumber_t m_agfrotor; /* last ag where space found */
|
|
xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */
|
|
spinlock_t m_agirotor_lock;/* .. and lock protecting it */
|
|
xfs_agnumber_t m_maxagi; /* highest inode alloc group */
|
|
uint m_readio_log; /* min read size log bytes */
|
|
uint m_readio_blocks; /* min read size blocks */
|
|
uint m_writeio_log; /* min write size log bytes */
|
|
uint m_writeio_blocks; /* min write size blocks */
|
|
struct log *m_log; /* log specific stuff */
|
|
int m_logbufs; /* number of log buffers */
|
|
int m_logbsize; /* size of each log buffer */
|
|
uint m_rsumlevels; /* rt summary levels */
|
|
uint m_rsumsize; /* size of rt summary, bytes */
|
|
struct xfs_inode *m_rbmip; /* pointer to bitmap inode */
|
|
struct xfs_inode *m_rsumip; /* pointer to summary inode */
|
|
struct xfs_inode *m_rootip; /* pointer to root directory */
|
|
struct xfs_quotainfo *m_quotainfo; /* disk quota information */
|
|
xfs_buftarg_t *m_ddev_targp; /* saves taking the address */
|
|
xfs_buftarg_t *m_logdev_targp;/* ptr to log device */
|
|
xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */
|
|
__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_agino_log; /* #bits for agino in inum */
|
|
__uint16_t m_inode_cluster_size;/* min inode buf size */
|
|
uint m_blockmask; /* sb_blocksize-1 */
|
|
uint m_blockwsize; /* sb_blocksize in words */
|
|
uint m_blockwmask; /* blockwsize-1 */
|
|
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_inobt_mxr[2]; /* max inobt btree records */
|
|
uint m_inobt_mnr[2]; /* min inobt btree records */
|
|
uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */
|
|
uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */
|
|
uint m_in_maxlevels; /* max inobt btree levels. */
|
|
struct radix_tree_root m_perag_tree; /* per-ag accounting info */
|
|
spinlock_t m_perag_lock; /* lock for m_perag_tree */
|
|
struct mutex m_growlock; /* growfs mutex */
|
|
int m_fixedfsid[2]; /* unchanged for life of FS */
|
|
uint m_dmevmask; /* DMI events for this FS */
|
|
__uint64_t m_flags; /* global mount flags */
|
|
uint m_dir_node_ents; /* #entries in a dir danode */
|
|
uint m_attr_node_ents; /* #entries in attr danode */
|
|
int m_ialloc_inos; /* inodes in inode allocation */
|
|
int m_ialloc_blks; /* blocks in inode allocation */
|
|
int m_inoalign_mask;/* mask sb_inoalignmt if used */
|
|
uint m_qflags; /* quota status flags */
|
|
xfs_trans_reservations_t m_reservations;/* precomputed res values */
|
|
__uint64_t m_maxicount; /* maximum inode count */
|
|
__uint64_t m_maxioffset; /* maximum inode offset */
|
|
__uint64_t m_resblks; /* total reserved blocks */
|
|
__uint64_t m_resblks_avail;/* available reserved blocks */
|
|
__uint64_t m_resblks_save; /* reserved blks @ remount,ro */
|
|
int m_dalign; /* stripe unit */
|
|
int m_swidth; /* stripe width */
|
|
int m_sinoalign; /* stripe unit inode alignment */
|
|
int m_attr_magicpct;/* 37% of the blocksize */
|
|
int m_dir_magicpct; /* 37% of the dir blocksize */
|
|
__uint8_t m_sectbb_log; /* sectlog - BBSHIFT */
|
|
const struct xfs_nameops *m_dirnameops; /* vector of dir name ops */
|
|
int m_dirblksize; /* directory block sz--bytes */
|
|
int m_dirblkfsbs; /* directory block sz--fsbs */
|
|
xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */
|
|
xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */
|
|
xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */
|
|
uint m_chsize; /* size of next field */
|
|
struct xfs_chash *m_chash; /* fs private inode per-cluster
|
|
* hash table */
|
|
atomic_t m_active_trans; /* number trans frozen */
|
|
#ifdef HAVE_PERCPU_SB
|
|
xfs_icsb_cnts_t __percpu *m_sb_cnts; /* per-cpu superblock counters */
|
|
unsigned long m_icsb_counters; /* disabled per-cpu counters */
|
|
struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */
|
|
struct mutex m_icsb_mutex; /* balancer sync lock */
|
|
#endif
|
|
struct xfs_mru_cache *m_filestream; /* per-mount filestream data */
|
|
struct task_struct *m_sync_task; /* generalised sync thread */
|
|
xfs_sync_work_t m_sync_work; /* work item for VFS_SYNC */
|
|
struct list_head m_sync_list; /* sync thread work item list */
|
|
spinlock_t m_sync_lock; /* work item list lock */
|
|
int m_sync_seq; /* sync thread generation no. */
|
|
wait_queue_head_t m_wait_single_sync_task;
|
|
__int64_t m_update_flags; /* sb flags we need to update
|
|
on the next remount,rw */
|
|
struct shrinker m_inode_shrink; /* inode reclaim shrinker */
|
|
} xfs_mount_t;
|
|
|
|
/*
|
|
* Flags for m_flags.
|
|
*/
|
|
#define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops
|
|
must be synchronous except
|
|
for space allocations */
|
|
#define XFS_MOUNT_DELAYLOG (1ULL << 1) /* delayed logging is enabled */
|
|
#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_RETERR (1ULL << 6) /* return alignment errors to
|
|
user */
|
|
#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_32BITINODES (1ULL << 14) /* do not create inodes above
|
|
* 32 bits in size */
|
|
#define XFS_MOUNT_SMALL_INUMS (1ULL << 15) /* users wants 32bit inodes */
|
|
#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) /* enable the filestreams
|
|
allocator */
|
|
#define XFS_MOUNT_NOATTR2 (1ULL << 25) /* disable use of attr2 format */
|
|
|
|
|
|
/*
|
|
* Default minimum read and write sizes.
|
|
*/
|
|
#define XFS_READIO_LOG_LARGE 16
|
|
#define XFS_WRITEIO_LOG_LARGE 16
|
|
|
|
/*
|
|
* 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
|
|
|
|
/*
|
|
* Synchronous read and write sizes. This should be
|
|
* better for NFSv2 wsync filesystems.
|
|
*/
|
|
#define XFS_WSYNC_READIO_LOG 15 /* 32k */
|
|
#define XFS_WSYNC_WRITEIO_LOG 14 /* 16k */
|
|
|
|
/*
|
|
* Allow large block sizes to be reported to userspace programs if the
|
|
* "largeio" mount option is used.
|
|
*
|
|
* If compatibility mode is specified, simply return the basic unit of caching
|
|
* so that we don't get inefficient read/modify/write I/O from user apps.
|
|
* Otherwise....
|
|
*
|
|
* If the underlying volume is a stripe, then return the stripe width in bytes
|
|
* as the recommended I/O size. It is not a stripe and we've set a default
|
|
* buffered I/O size, return that, otherwise return the compat default.
|
|
*/
|
|
static inline unsigned long
|
|
xfs_preferred_iosize(xfs_mount_t *mp)
|
|
{
|
|
if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE)
|
|
return PAGE_CACHE_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_CACHE_SIZE));
|
|
}
|
|
|
|
#define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset)
|
|
|
|
#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_test_for_freeze(mp) ((mp)->m_super->s_frozen)
|
|
#define xfs_wait_for_freeze(mp,l) vfs_check_frozen((mp)->m_super, (l))
|
|
|
|
/*
|
|
* 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_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);
|
|
}
|
|
|
|
/*
|
|
* perag get/put wrappers for ref counting
|
|
*/
|
|
struct xfs_perag *xfs_perag_get(struct xfs_mount *mp, xfs_agnumber_t agno);
|
|
struct xfs_perag *xfs_perag_get_tag(struct xfs_mount *mp, xfs_agnumber_t agno,
|
|
int tag);
|
|
void xfs_perag_put(struct xfs_perag *pag);
|
|
|
|
/*
|
|
* Per-cpu superblock locking functions
|
|
*/
|
|
#ifdef HAVE_PERCPU_SB
|
|
static inline void
|
|
xfs_icsb_lock(xfs_mount_t *mp)
|
|
{
|
|
mutex_lock(&mp->m_icsb_mutex);
|
|
}
|
|
|
|
static inline void
|
|
xfs_icsb_unlock(xfs_mount_t *mp)
|
|
{
|
|
mutex_unlock(&mp->m_icsb_mutex);
|
|
}
|
|
#else
|
|
#define xfs_icsb_lock(mp)
|
|
#define xfs_icsb_unlock(mp)
|
|
#endif
|
|
|
|
/*
|
|
* This structure is for use by the xfs_mod_incore_sb_batch() routine.
|
|
* xfs_growfs can specify a few fields which are more than int limit
|
|
*/
|
|
typedef struct xfs_mod_sb {
|
|
xfs_sb_field_t msb_field; /* Field to modify, see below */
|
|
int64_t msb_delta; /* Change to make to specified field */
|
|
} xfs_mod_sb_t;
|
|
|
|
extern int xfs_log_sbcount(xfs_mount_t *, uint);
|
|
extern __uint64_t xfs_default_resblks(xfs_mount_t *mp);
|
|
extern int xfs_mountfs(xfs_mount_t *mp);
|
|
|
|
extern void xfs_unmountfs(xfs_mount_t *);
|
|
extern int xfs_unmountfs_writesb(xfs_mount_t *);
|
|
extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int64_t, int);
|
|
extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *,
|
|
uint, int);
|
|
extern int xfs_mount_log_sb(xfs_mount_t *, __int64_t);
|
|
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 int xfs_fs_writable(xfs_mount_t *);
|
|
extern int xfs_sb_validate_fsb_count(struct xfs_sb *, __uint64_t);
|
|
|
|
extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
|
|
|
|
#endif /* __KERNEL__ */
|
|
|
|
extern void xfs_mod_sb(struct xfs_trans *, __int64_t);
|
|
extern int xfs_initialize_perag(struct xfs_mount *, xfs_agnumber_t,
|
|
xfs_agnumber_t *);
|
|
extern void xfs_sb_from_disk(struct xfs_sb *, struct xfs_dsb *);
|
|
extern void xfs_sb_to_disk(struct xfs_dsb *, struct xfs_sb *, __int64_t);
|
|
|
|
#endif /* __XFS_MOUNT_H__ */
|