diff options
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 44 |
1 files changed, 37 insertions, 7 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index cd3cf9613a0..ebd73960e9d 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -267,6 +267,34 @@ typedef struct xfs_ioops { #define XFS_IODONE(vfsp) \ (*(mp)->m_io_ops.xfs_iodone)(vfsp) +#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_SB_LOCKED (1 << 0) /* sb already locked */ +#define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ + +extern int xfs_icsb_init_counters(struct xfs_mount *); +extern void xfs_icsb_sync_counters_lazy(struct xfs_mount *); + +#else +#define xfs_icsb_init_counters(mp) (0) +#define xfs_icsb_sync_counters_lazy(mp) do { } while (0) +#endif typedef struct xfs_mount { bhv_desc_t m_bhv; /* vfs xfs behavior */ @@ -372,6 +400,11 @@ typedef struct xfs_mount { struct xfs_qmops m_qm_ops; /* vector of XQM ops */ struct xfs_ioops m_io_ops; /* vector of I/O ops */ atomic_t m_active_trans; /* number trans frozen */ +#ifdef HAVE_PERCPU_SB + xfs_icsb_cnts_t *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 */ +#endif } xfs_mount_t; /* @@ -386,8 +419,6 @@ typedef struct xfs_mount { #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem operations, typically for disk errors in metadata */ -#define XFS_MOUNT_NOATIME (1ULL << 5) /* don't modify inode access - times on reads */ #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to user */ #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment @@ -411,6 +442,8 @@ typedef struct xfs_mount { #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_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock + counters */ /* @@ -473,11 +506,6 @@ xfs_preferred_iosize(xfs_mount_t *mp) #define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */ /* - * xflags for xfs_syncsub - */ -#define XFS_XSYNC_RELOC 0x01 - -/* * Flags for xfs_mountfs */ #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ @@ -548,6 +576,8 @@ extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); extern int xfs_unmountfs_writesb(xfs_mount_t *); extern int xfs_unmount_flush(xfs_mount_t *, int); extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int); +extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, + int, int); extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, uint, int); extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); |