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ublk_drv: update comment for __ublk_fail_req()

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Since __ublk_rq_task_work always fails requests immediately during
exiting, __ublk_fail_req() is only called from abort context during
exiting. So lock is unnecessary.

Signed-off-by: ZiyangZhang <ZiyangZhang@linux.alibaba.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20220815023633.259825-3-ZiyangZhang@linux.alibaba.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
ZiyangZhang 2022-08-15 10:36:32 +08:00 committed by Jens Axboe
parent 966120b51a
commit bb24174754
1 changed files with 3 additions and 2 deletions
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5
drivers/block/ublk_drv.c
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@ -605,8 +605,9 @@ static void ublk_complete_rq(struct request *req)
}
/*
* __ublk_fail_req() may be called from abort context or ->ubq_daemon
* context during exiting, so lock is required.
* Since __ublk_rq_task_work always fails requests immediately during
* exiting, __ublk_fail_req() is only called from abort context during
* exiting. So lock is unnecessary.
*
* Also aborting may not be started yet, keep in mind that one failed
* request may be issued by block layer again.