From 904957b75033149509dc0fecc0af34348f87c78c Mon Sep 17 00:00:00 2001 From: Jie Liu Date: Fri, 13 Dec 2013 15:51:48 +1100 Subject: 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 Reviewed-by: Dave Chinner Signed-off-by: Dave Chinner --- fs/xfs/xfs_ialloc.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'fs/xfs') 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. */ -- cgit v1.2.3