From: Jens Axboe <axboe@fb.com>
Date: Tue, 6 Dec 2016 15:26:42 +0000 (-0700)
Subject: blk-mq: fix completion byte stats with scheduling
X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=refs%2Fheads%2Fblk-mq-legacy-sched;p=linux-2.6-block.git

blk-mq: fix completion byte stats with scheduling

Signed-off-by: Jens Axboe <axboe@fb.com>
---

diff --git a/block/blk-mq.c b/block/blk-mq.c
index cc1c70330962..d9c3c6622ca5 100644
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -877,6 +877,8 @@ static void sched_rq_end_io(struct request *rq, int error)
 	/* transfer queue ref to 'rq', blk_mq_free_request() drops it */
 	sched_rq->rq_flags &= ~RQF_HAS_Q_REF;
 
+	blk_account_io_completion(sched_rq, blk_rq_bytes(sched_rq));
+
 	spin_lock_irqsave(q->queue_lock, flags);
 	blk_finish_request(sched_rq, error);
 	spin_unlock_irqrestore(q->queue_lock, flags);