Re: [PATCH ] block: don't call blk_mq_quiesce_queue() during switching mq sched

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On 04/28/2017 01:32 AM, Ming Lei wrote:
> We have freezed queue already, not necessary to call
> blk_mq_quiesce_queue() any more, so remove it.

Are you sure? It ensures that we also aren't in the middle of
blk_mq_make_request(), we need a stable view of the sched
status throughout that.

Similarly with updating the request maps.

-- 
Jens Axboe




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