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[PATCH 1/2] xfs: inode allocation should use unmapped buffers.

To: xfs@xxxxxxxxxxx
Subject: [PATCH 1/2] xfs: inode allocation should use unmapped buffers.
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Tue, 20 Nov 2012 22:27:10 +1100
In-reply-to: <1353410831-22653-1-git-send-email-david@xxxxxxxxxxxxx>
References: <1353410831-22653-1-git-send-email-david@xxxxxxxxxxxxx>
From: Dave Chinner <dchinner@xxxxxxxxxx>

Inode buffers do not need to be mapped as inodes are read or written
directly from/to the pages underlying the buffer. This fixes a
regression introduced by commit 611c994 ("xfs: make XBF_MAPPED the
default behaviour").

Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx>
---
 fs/xfs/xfs_ialloc.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 2d6495e..a815412 100644
--- a/fs/xfs/xfs_ialloc.c
+++ b/fs/xfs/xfs_ialloc.c
@@ -200,7 +200,8 @@ xfs_ialloc_inode_init(
                 */
                d = XFS_AGB_TO_DADDR(mp, agno, agbno + (j * blks_per_cluster));
                fbuf = xfs_trans_get_buf(tp, mp->m_ddev_targp, d,
-                                        mp->m_bsize * blks_per_cluster, 0);
+                                        mp->m_bsize * blks_per_cluster,
+                                        XBF_UNMAPPED);
                if (!fbuf)
                        return ENOMEM;
                /*
-- 
1.7.10

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