[PATCH 4/6] xfsprogs: introduce xfs_icluster_size_fsb()

[PATCH 4/6] xfsprogs: introduce xfs_icluster_size_fsb()

[Jeff Liu]

From: Jie Liu <jeff.liu@oracle.com>

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>
---
 include/xfs_ialloc.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/include/xfs_ialloc.h b/include/xfs_ialloc.h
index 0498f20..9dee62f 100644
--- a/include/xfs_ialloc.h
+++ b/include/xfs_ialloc.h
@@ -30,6 +30,16 @@ struct xfs_btree_cur;
  */
 #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.
  */
-- 
1.8.3.2

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Re: [PATCH 4/6] xfsprogs: introduce xfs_icluster_size_fsb()

[Brian Foster]

On Mon, May 05, 2014 at 08:32:20PM +0800, Jeff Liu wrote:
> From: Jie Liu <jeff.liu@oracle.com>
> 
> 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: Brian Foster <bfoster@redhat.com>

>  include/xfs_ialloc.h | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/include/xfs_ialloc.h b/include/xfs_ialloc.h
> index 0498f20..9dee62f 100644
> --- a/include/xfs_ialloc.h
> +++ b/include/xfs_ialloc.h
> @@ -30,6 +30,16 @@ struct xfs_btree_cur;
>   */
>  #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.
>   */
> -- 
> 1.8.3.2
> 
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