nvme reservation commands during controller reset

[Christoph Hellwig]

On Mon, Aug 17, 2020 at 12:29:49PM -0700, Sagi Grimberg wrote:
> So what is the semantics we want to provide? a best-effort one? not very
> different than what we have today. We could, if we choose to, have the
> pr context to wait for a path_map_changed completion and have
> nvme_mpath_set_live and nvme_mpath_check_last_path do complete_all on
> this completion.
> 
> But the question is what the semantics we want to provide...

But it might never change..  We could give it the default max_retries
based retries for any reasons if we want to be fancy.