dm rq: add a missing break to map_request

We don't want to bug when receiving a DM_MAPIO_KILL value..

Fixes: 412445ac ("dm: introduce a new DM_MAPIO_KILL return value")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/md/dm-rq.c b/drivers/md/dm-rq.c
index 2af27026aa2e..b639fa7246ee 100644
--- a/drivers/md/dm-rq.c
+++ b/drivers/md/dm-rq.c
@@ -507,6 +507,7 @@ static int map_request(struct dm_rq_target_io *tio)
         case DM_MAPIO_KILL:
                 /* The target wants to complete the I/O */
                 dm_kill_unmapped_request(rq, -EIO);
+                break;
         default:
                 DMWARN("unimplemented target map return value: %d", r);
                 BUG();