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blk-mq: do not update io_ticks with passthrough requests 

[ Upstream commit b81c14ca14 ]

Flush or passthrough requests are not accounted as normal IO in completion.
To reflect iostat for slow IO, io_ticks is updated when stat show called
based on inflight numbers.
It may cause inconsistent io_ticks calculation result.

So do not account non-passthrough request when check inflight.

Fixes: 86d7331299 ("block: update io_ticks when io hang")
Signed-off-by: Haisu Wang <haisuwang@tencent.com>
Reviewed-by: samuelliao <samuelliao@tencent.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20220530064059.1120058-1-haisuwang@tencent.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Haisu Wang 2022-05-30 14:40:59 +08:00 committed by Greg Kroah-Hartman
parent 2094fe0ddc
commit 601c908684
1 changed files with 2 additions and 1 deletions
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block/blk-mq.c
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@ -132,7 +132,8 @@ static bool blk_mq_check_inflight(struct request *rq, void *priv,
{
struct mq_inflight *mi = priv;
if ((!mi->part->bd_partno || rq->part == mi->part) &&
if (rq->part && blk_do_io_stat(rq) &&
(!mi->part->bd_partno || rq->part == mi->part) &&
blk_mq_rq_state(rq) == MQ_RQ_IN_FLIGHT)
mi->inflight[rq_data_dir(rq)]++;