[PATCH-4.7 1/3] NVMe: Return ENODEV error on invalid namespace

[Christoph Hellwig]

On Tue, May 03, 2016 at 02:19:28PM +0000, Busch, Keith wrote:
> This was added at the joint request from one OSV and IHV. I've no idea
> what they're software is doing with this, but they say it doesn't do the
> right thing with 'EIO'. ENODEV for invalid namespaces sounded like a
> reasonable error.

Well, I'll have to say "no" to this until said OSV and IHV can explain
why they need this in detail on linux-nvme.  And even then we'll
probably need a different solution for them.