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rq-qos: set ourself TASK_UNINTERRUPTIBLE after we schedule

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In case we get a spurious wakeup we need to make sure to re-set
ourselves to TASK_UNINTERRUPTIBLE so we don't busy wait.

Reviewed-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Josef Bacik 2019-07-16 16:19:28 -04:00 committed by Jens Axboe
parent 64e7ea875e
commit d14a9b389a
1 changed files with 1 additions and 0 deletions
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block/blk-rq-qos.c
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@ -262,6 +262,7 @@ void rq_qos_wait(struct rq_wait *rqw, void *private_data,
}
io_schedule();
has_sleeper = true;
set_current_state(TASK_UNINTERRUPTIBLE);
} while (1);
finish_wait(&rqw->wait, &data.wq);
}