[added to the 4.1 stable tree] xfs: skip stale inodes in xfs_iflush_cluster

From: Dave Chinner <redacted>

This patch has been added to the 4.1 stable tree. If you have any
objections, please let us know.

===============

[ Upstream commit 7d3aa7fe970791f1a674b14572a411accf2f4d4e ]

We don't write back stale inodes so we should skip them in
xfs_iflush_cluster, too.

cc: <redacted> # 3.10.x-
Signed-off-by: Dave Chinner <redacted>
Reviewed-by: Brian Foster <redacted>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Sasha Levin <redacted>
---
 fs/xfs/xfs_inode.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/fs/xfs/xfs_inode.c b/fs/xfs/xfs_inode.c
index c9f8637..c29f342 100644
--- a/fs/xfs/xfs_inode.c
+++ b/fs/xfs/xfs_inode.c

@@ -3238,6 +3238,7 @@ xfs_iflush_cluster(
 		 */
 		spin_lock(&iq->i_flags_lock);
 		if (!iq->i_ino ||
+		    __xfs_iflags_test(iq, XFS_ISTALE) ||
 		    (XFS_INO_TO_AGINO(mp, iq->i_ino) & mask) != first_index) {
 			spin_unlock(&iq->i_flags_lock);
 			continue;

-- 
2.5.0