[RFC PATCH 5/6] nvme: Add unlock_from_suspend

[Keith Busch]

On Thu, Nov 10, 2016 at 04:01:31PM -0700, Scott Bauer wrote:
> On Tue, Nov 01, 2016 at 06:57:05AM -0700, Christoph Hellwig wrote:
> > blk_execute_rq_nowait is the API to use - blk_mq_insert_request isn't
> > even exported.
> 
> I remember now, after I changed it to use rq_nowait, why we added this wrapper
> function and used blk_mq_insert_request.
> 
> When we dispatch opal commands down to the controller we're doing so in an IRQ,
> so if we use rq_nowait, we lockup.

In this case can we push the submission off to a work queue and use
blk_mq_insert_rq_nowait?