Looks good. Just a couple minor typo's in the commit message.
Reviewed-by: Keith Busch <kbusch@xxxxxxxxxx>
On Mon, Mar 22, 2021 at 08:37:25AM +0100, Christoph Hellwig wrote:
> This adds (back) and API for simple stacking drivers to submit a bio to
an API
> blk-mq queue. The prime aim is to avoid blocking on the queue freeze
> percpu ref, as a multipath driver really does not want to get blocked
> on that when an underlying device is undergoing error recovery. It also
> happens to optimize away the small overhead of the curren->bio_list based
current->bio_list
