Re: [PATCH 5/9] block: Extend blk_freeze_queue_start() to the non-blk-mq path

On 09/27/2016 07:42 AM, Bart Van Assche wrote:

Jens, regarding non-blk-mq mode and q_usage_counter: do you prefer that
I rework patch 8/9 such that blk_quiesce_queue() and blk_resume_queue()
are only used in blk-mq mode or are you OK with adding a
blk_queue_enter() call in get_request() and a blk_queue_exit() call to
__blk_put_request()?

(replying to my own e-mail)

Although it is easy to make q_usage_counter count non-blk-mq requests, 
extending the blk_quiesce_queue() waiting mechanism to the non-blk-mq 
path is non-trivial. To limit the number of changes in this patch series 
I will drop the non-blk-mq changes from this patch series.

Bart.