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bfq: ignore oom_bfqq in bfq_check_waker 

oom_bfqq is just a fallback bfqq, so shouldn't be used with waker
detection.

Suggested-by: Jan Kara <jack@suse.cz>
Signed-off-by: Khazhismel Kumykov <khazhy@google.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20221108181030.1611703-2-khazhy@google.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Khazhismel Kumykov 2022-11-08 10:10:30 -08:00 committed by Jens Axboe
parent a1795c2ccb
commit 99771d73ff
1 changed files with 3 additions and 1 deletions
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4
block/bfq-iosched.c
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@ -2083,7 +2083,9 @@ static void bfq_check_waker(struct bfq_data *bfqd, struct bfq_queue *bfqq,
if (!bfqd->last_completed_rq_bfqq ||
bfqd->last_completed_rq_bfqq == bfqq ||
bfq_bfqq_has_short_ttime(bfqq) ||
now_ns - bfqd->last_completion >= 4 * NSEC_PER_MSEC)
now_ns - bfqd->last_completion >= 4 * NSEC_PER_MSEC ||
bfqd->last_completed_rq_bfqq == &bfqd->oom_bfqq ||
bfqq == &bfqd->oom_bfqq)
return;
/*