On Mon, 2018-01-08 at 11:15 -0800, Tejun Heo wrote:
> @@ -156,12 +156,12 @@ void blk_timeout_work(struct work_struct *work)
> */
> void blk_abort_request(struct request *req)
> {
> - if (blk_mark_rq_complete(req))
> - return;
> -
> if (req->q->mq_ops) {
> - blk_mq_rq_timed_out(req, false);
> + req->deadline = jiffies;
> + mod_timer(&req->q->timeout, 0);
> } else {
> + if (blk_mark_rq_complete(req))
> + return;
> blk_delete_timer(req);
> blk_rq_timed_out(req);
> }
Other req->deadline writes are protected by preempt_disable(),
write_seqcount_begin(&rq->gstate_seq), write_seqcount_end(&rq->gstate_seq)
and preempt_enable(). I think it's fine that the above req->deadline store
does not have that protection but I also think that that deserves a comment.
Thanks,
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