Re: [PATCH 10/14] blk-mq: skip non-mq queues in blk_mq_quiesce_queue

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On 11/1/22 08:00, Christoph Hellwig wrote:
> For submit_bio based queues there is no (S)RCU critical section during
> I/O submission and thus nothing to wait for in blk_mq_wait_quiesce_done,
> so skip doing any synchronization.  No non-mq driver should be calling
> this, but for now we have core callers that unconditionally call into it.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>
> Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
> Reviewed-by: Sagi Grimberg <sagi@xxxxxxxxxxx>
> Reviewed-by: Ming Lei <ming.lei@xxxxxxxxxx>
> Reviewed-by: Hannes Reinecke <hare@xxxxxxx>
> ---
Reviewed-by: Chaitanya Kulkarni <kch@xxxxxxxxxx>

-ck






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