dm: make flush bios explicitly sync

[sfrench/cifs-2.6.git] / drivers / md / dm-snap-persistent.c

diff --git a/drivers/md/dm-snap-persistent.c b/drivers/md/dm-snap-persistent.c
index b93476c3ba3f9767fb133fed977e7a888cc0698e..c5534d294773fc0267a1b4c7438a3316e74d417a 100644 (file)
--- a/drivers/md/dm-snap-persistent.c
+++ b/drivers/md/dm-snap-persistent.c
@@ -741,7 +741,8 @@ static void persistent_commit_exception(struct dm_exception_store *store,
        /*
         * Commit exceptions to disk.
         */
-       if (ps->valid && area_io(ps, REQ_OP_WRITE, REQ_PREFLUSH | REQ_FUA))
+       if (ps->valid && area_io(ps, REQ_OP_WRITE,
+                                REQ_PREFLUSH | REQ_FUA | REQ_SYNC))
                ps->valid = 0;
 
        /*