diff options
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 4c9817a80435..7cca5110ca44 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -267,6 +267,32 @@ 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; + spinlock_t icsb_lock; +} xfs_icsb_cnts_t; + +#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 +398,10 @@ 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 */ +#endif } xfs_mount_t; /* @@ -409,6 +439,8 @@ 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 */ /* @@ -546,6 +578,8 @@ 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); |