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| author | Keith Busch <keith.busch@intel.com> | 2018-05-29 15:52:27 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-05-29 08:47:40 -0600 |
| commit | ad103e79838d4b4cd4d6dd0bdfaef937e8652ae9 (patch) | |
| tree | 3373843f14ffb3bc33eaefa6cedea19baee89b39 /block/blk-mq.c | |
| parent | 01fc27d96950149c3e6c0b8dfbe05e26725381cb (diff) | |
| download | linux-ad103e79838d4b4cd4d6dd0bdfaef937e8652ae9.tar.bz2 | |
blk-mq: Fix timeout and state order
The block layer had been setting the state to in-flight prior to updating
the timer. This is the wrong order since the timeout handler could observe
the in-flight state with the older timeout, believing the request had
expired when in fact it is just getting started.
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'block/blk-mq.c')
| -rw-r--r-- | block/blk-mq.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/block/blk-mq.c b/block/blk-mq.c index df928200b17e..3581a1e5c8a7 100644 --- a/block/blk-mq.c +++ b/block/blk-mq.c @@ -697,8 +697,8 @@ void blk_mq_start_request(struct request *rq) preempt_disable(); write_seqcount_begin(&rq->gstate_seq); - blk_mq_rq_update_state(rq, MQ_RQ_IN_FLIGHT); blk_add_timer(rq); + blk_mq_rq_update_state(rq, MQ_RQ_IN_FLIGHT); write_seqcount_end(&rq->gstate_seq); preempt_enable(); |