On 10/29/22 03:02, Jinlong Chen wrote:
Calling blk_freeze_queue results in a redundant call to blk_freeze_queue_start as it has been called in blk_queue_start_drain. Replace blk_freeze_queue with blk_mq_freeze_queue_wait to avoid the redundant call.
blk_mq_destroy_queue() has more callers than blk_queue_start_drain() so the above description is at least misleading.
Additionally, the word "cleanup" from the patch series title indicates that no patch in this series changes the behavior of the code. This patch involves a behavior change.
I think this patch introduces a hang for every caller of blk_mq_destroy_queue() other than blk_queue_start_drain().
Bart.
