Re: [PATCH] scsi: sd: add runtime pm to open / release

Alan Stern
2020-07-01T00:50:03Z

On Tue, Jun 30, 2020 at 04:31:58PM -0700, Bart Van Assche wrote:
> On 2020-06-30 12:38, Alan Stern wrote:
> > Assume that BLK_MQ_REQ_PREEMPT is set in flags. Then where exactly
> > does blk_queue_enter(q, flags) call blk_pm_request_resume(q)?
>
> Please take a look at how the *current* implementation of runtime power
> management works. Your question is relevant for the old implementation
> of runtime power management but not for the current implementation.

What do you mean by "current"? I have been looking at the implementation
in 5.8-rc3 from Linus's tree. Should I look somewhere else?

Alan Stern