Re: [PATCH v3 8/9] blk-mq: Insert blk_pm_{add,put}_request() calls

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On Fri, 2018-08-03 at 07:53 +-0800, Ming Lei wrote:
+AD4- blk+AF8-pm+AF8-add+AF8-request() calls pm+AF8-request+AF8-resume() for waking up device, but
+AD4- it is wrong because it is async request, which can't guarantee device
+AD4- will be ready before calling .queue+AF8-rq().

That's a longstanding issue and not something that has been introduced by this
patch series. Hence patch 6/9 that issues a warning if pm+AF8-request+AF8-resume() would
be called.

Bart.





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