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From: Jeff Liu <jeff.liu@oracle.com>
To: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: [PATCH 4/6] xfsprogs: introduce xfs_icluster_size_fsb()
Date: Mon, 05 May 2014 20:32:20 +0800	[thread overview]
Message-ID: <536784D4.1050405@oracle.com> (raw)

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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             reply	other threads:[~2014-05-05 12:32 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-05-05 12:32 Jeff Liu [this message]
2014-05-05 21:10 ` [PATCH 4/6] xfsprogs: introduce xfs_icluster_size_fsb() Brian Foster

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