dm raid: prohibit to pass in both sync and nosync ctr flags

Signed-off-by: Heinz Mauelshagen <heinzm@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

diff --git a/drivers/md/dm-raid.c b/drivers/md/dm-raid.c
index 4bf7747a25a9a59701a874545c616e7823d1858a..e8e9b6abe133bf382b1f8e64025124c950a3c448 100644 (file)
--- a/drivers/md/dm-raid.c
+++ b/drivers/md/dm-raid.c
@@ -1297,6 +1297,12 @@ static int parse_raid_params(struct raid_set *rs, struct dm_arg_set *as,
                }
        }
 
+       if (test_bit(__CTR_FLAG_SYNC, &rs->ctr_flags) &&
+           test_bit(__CTR_FLAG_NOSYNC, &rs->ctr_flags)) {
+               rs->ti->error = "sync and nosync are mutually exclusive";
+               return -EINVAL;
+       }
+
        if (validate_region_size(rs, region_size))
                return -EINVAL;