Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 904957b7 authored by Jie Liu's avatar Jie Liu Committed by Dave Chinner
Browse files

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: default avatarJie Liu <jeff.liu@oracle.com>
Reviewed-by: default avatarDave Chinner <dchinner@redhat.com>
Signed-off-by: default avatarDave Chinner <david@fromorbit.com>
parent 126cd105

fs/xfs/xfs_ialloc.h

+10 −0
Original line number Diff line number Diff line
@@ -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.

 */