Hello, Ming.
On Thu, Apr 12, 2018 at 04:55:29AM +0800, Ming Lei wrote:
...
> + spin_lock_irqsave(req->q->queue_lock, flags);
> + if (blk_mq_rq_state(req) != MQ_RQ_COMPLETE_IN_RESET) {
> + blk_mq_rq_update_aborted_gstate(req, 0);
> + blk_add_timer(req);
Nothing prevents the above blk_add_timer() racing against the next
recycle instance of the request, so this still leaves a small race
window.
Thanks.
--
tejun