block: set REQ_TYPE_FS on flush requests

the block layer doesn't set rq->cmd_type on flush requests. By
definition, it should be REQ_TYPE_FS (the lower layers build a command
and interpret the result of it, that is, the block layer doesn't know
the details).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/block/blk-barrier.c b/block/blk-barrier.c
index 557f69360b6a..d95a1440e29d 100644
--- a/block/blk-barrier.c
+++ b/block/blk-barrier.c
@@ -134,6 +134,7 @@ static void queue_flush(struct request_queue *q, unsigned which)
         }
 
         blk_rq_init(q, rq);
+        rq->cmd_type = REQ_TYPE_FS;
         rq->cmd_flags = REQ_HARDBARRIER | REQ_FLUSH;
         rq->rq_disk = q->bar_rq.rq_disk;
         rq->end_io = end_io;