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. Bart.
