On 2/15/22 04:37, Wang Jianchao (Kuaishou) wrote:
@@ -337,6 +338,7 @@ void blk_cleanup_queue(struct request_queue *q) * it is safe to free requests now. */ mutex_lock(&q->sysfs_lock); + rq_qos_exit(q); if (q->elevator) blk_mq_sched_free_rqs(q); mutex_unlock(&q->sysfs_lock);
I think this change should be a separate patch with tag "Fixes: 8e141f9eb803 ("block: drain file system I/O on del_gendisk")". See also https://lore.kernel.org/linux-block/b64942a1-0f7e-9e9c-0fd4-c35647035eaf@xxxxxxx/
Thanks, Bart.
