[PATCH 6/7] nvme: properly handle partially initialized queues in nvme_create_io_queues

[Keith Busch]

On Fri, 2 Oct 2015, Christoph Hellwig wrote:
> This avoids having to clean up later in a seemingly unrelated place.
>
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Somewhat related to this area of code but not a new concern, I think we're
in trouble if the controller resets after we have active request_queue,
but controller allows fewer IO queues than originally configured with
the blk-mq tagset. On the other hand, we don't have a way to provide
additional IO queues to the tagset after a reset either, so I think we
need a new blk-mq API to notify it of changes to number of h/w contexts.

This part looks good.

Reviewed-by: Keith Busch <keith.busch at intel.com>