Re: [PATCH V3 17/17] block: enable runtime PM for blk-mq

Hi Ming, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on mkp-scsi/for-next] [also build test WARNING on v4.19-rc3 next-20180913] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day

Re: [PATCH V3 17/17] block: enable runtime PM for blk-mq

Hi Ming, Thank you for the patch! Yet something to improve: [auto build test ERROR on mkp-scsi/for-next] [also build test ERROR on v4.19-rc3 next-20180913] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linu

[PATCH V3 17/17] block: enable runtime PM for blk-mq

Now blk-mq can borrow the runtime PM approach from legacy path, so enable it simply. The only difference with legacy is that: 1) blk_mq_queue_sched_tag_busy_iter() is introduced for checking if queue is idle, instead of maintaining one counter. 2) we have to iterate over scheduler tags for counti