blk-mq: initialize resid_len

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>

1 files changed, 2 insertions, 0 deletions

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 5455ed19de1c..658428a28faf 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -353,6 +353,8 @@ static void blk_mq_start_request(struct request *rq, bool last)
 
         trace_block_rq_issue(q, rq);
 
+        rq->resid_len = blk_rq_bytes(rq);
+
         /*
          * Just mark start time and set the started bit. Due to memory
          * ordering, we know we'll see the correct deadline as long as