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| author | Dave Chinner <dchinner@redhat.com> | 2015-02-23 11:19:53 +0100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2015-02-23 11:19:53 +0100 |
| commit | e88b64ea1f3da64dbb52636377be295c90367377 (patch) | |
| tree | 0031d3ed6f296981fdcd2b9f4cf3cebc8b557ab8 /fs/xfs/xfs_mount.h | |
| parent | xfs: use generic percpu counters for inode counter (diff) | |
| download | linux-e88b64ea1f3da64dbb52636377be295c90367377.tar.xz linux-e88b64ea1f3da64dbb52636377be295c90367377.zip | |
xfs: use generic percpu counters for free inode counter
XFS has hand-rolled per-cpu counters for the superblock since before
there was any generic implementation. The free inode counter is not
used for any limit enforcement - the per-AG free inode counters are
used during allocation to determine if there are inode available for
allocation.
Hence we don't need any of the complexity of the hand-rolled
counters and we can simply replace them with generic per-cpu
counters similar to the inode counter.
This version introduces a xfs_mod_ifree() helper function from
Christoph Hellwig.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_mount.h')
| -rw-r--r-- | fs/xfs/xfs_mount.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/xfs/xfs_mount.h b/fs/xfs/xfs_mount.h index 76b18c8c58c5..7ce997d43d81 100644 --- a/fs/xfs/xfs_mount.h +++ b/fs/xfs/xfs_mount.h @@ -84,6 +84,7 @@ typedef struct xfs_mount { struct xfs_sb m_sb; /* copy of fs superblock */ spinlock_t m_sb_lock; /* sb counter lock */ struct percpu_counter m_icount; /* allocated inodes counter */ + struct percpu_counter m_ifree; /* free inodes counter */ struct xfs_buf *m_sb_bp; /* buffer for superblock */ char *m_fsname; /* filesystem name */ @@ -391,6 +392,7 @@ 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_mod_icount(struct xfs_mount *mp, int64_t delta); +extern int xfs_mod_ifree(struct xfs_mount *mp, int64_t delta); extern int xfs_mount_log_sb(xfs_mount_t *); extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); extern int xfs_readsb(xfs_mount_t *, int); |