Re: [PATCH 0/4] blk-mq: support to use hw tag for scheduling

Bart Van Assche
2017-05-03T17:43:48Z

On Wed, 2017-05-03 at 11:40 -0600, Jens Axboe wrote:
> Subject: [PATCH] blk-mq: don't use sync workqueue flushing from drivers
>=20
> A previous commit introduced the sync flush, which we need from
> internal callers like blk_mq_quiesce_queue(). However, we also
> call the stop helpers from drivers, particularly from ->queue_rq()
> when we have to stop processing for a bit. We can't block from
> those locations, and we don't have to guarantee that we're
> fully flushed.

Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com>=