On 10/24/18 7:18 AM, Ming Lei wrote: > rq_qos_exit() removes the current q->rq_qos, this action has to be > done after queue is frozen, otherwise the IO queue path may never > be waken up, then IO hang is caused. > > So fixes this issue by moving rq_qos_exit() after queue is frozen.
Looks good, thanks. Applied for 4.20. -- Jens Axboe
