Btrfs: only fua the first superblock when writting supers

We only intent to fua the first superblock in every device from
comments, fix it.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 0400a26fc8c5..9850a51a3f19 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3133,7 +3133,10 @@ static int write_dev_supers(struct btrfs_device *device,
                  * we fua the first super.  The others we allow
                  * to go down lazy.
                  */
-                ret = btrfsic_submit_bh(WRITE_FUA, bh);
+                if (i == 0)
+                        ret = btrfsic_submit_bh(WRITE_FUA, bh);
+                else
+                        ret = btrfsic_submit_bh(WRITE_SYNC, bh);
                 if (ret)
                         errors++;
         }