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| author | Jie Liu <jeff.liu@oracle.com> | 2013-12-13 15:51:48 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2013-12-13 15:51:48 +1100 |
| commit | 904957b75033149509dc0fecc0af34348f87c78c (patch) | |
| tree | b01dc1ed2eea95de9cd980bab08b209d6853a64d /fs/xfs/xfs_ialloc.h | |
| parent | 126cd105d4408ff52437a72d681aecdb29cc80e8 (diff) | |
| download | linux-904957b75033149509dc0fecc0af34348f87c78c.tar.gz linux-904957b75033149509dc0fecc0af34348f87c78c.tar.bz2 linux-904957b75033149509dc0fecc0af34348f87c78c.zip | |
xfs: introduce a common helper xfs_icluster_size_fsb
Introduce a common routine xfs_icluster_size_fsb() to calculate
and return the number of file system blocks per inode cluster.
Signed-off-by: Jie Liu <jeff.liu@oracle.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs/xfs_ialloc.h')
| -rw-r--r-- | fs/xfs/xfs_ialloc.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/fs/xfs/xfs_ialloc.h b/fs/xfs/xfs_ialloc.h index d86f8bdc963e..812365d17e67 100644 --- a/fs/xfs/xfs_ialloc.h +++ b/fs/xfs/xfs_ialloc.h @@ -28,6 +28,16 @@ struct xfs_btree_cur; /* Move inodes in clusters of this size */ #define XFS_INODE_BIG_CLUSTER_SIZE 8192 +/* Calculate and return the number of filesystem blocks per inode cluster */ +static inline int +xfs_icluster_size_fsb( + struct xfs_mount *mp) +{ + if (mp->m_sb.sb_blocksize >= mp->m_inode_cluster_size) + return 1; + return mp->m_inode_cluster_size >> mp->m_sb.sb_blocklog; +} + /* * Make an inode pointer out of the buffer/offset. */ |