xfs: inode allocation should use unmapped buffers.

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@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Ben Myers <bpm@sgi.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/xfs/xfs_ialloc.c b/fs/xfs/xfs_ialloc.c
index 2d6495eaaa34..a815412eab80 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;
                 /*