[PATCH v2] nvme: use uuid_t in nvme_ns

[Christoph Hellwig]

On Mon, Jun 12, 2017 at 12:04:18PM +0200, Johannes Thumshirn wrote:
> > So, this reveals two thins:
> > 1) shall we define NVME_NIDT_UUID_LEN to be UUID_LEN or substitute it
> > completely with the latter?
> 
> No, we have NVME_NIDT_UUID_LEN but also NVME_NIDT_NGUID_LEN and
> NVME_NIDT_EUI64_LEN.

Yeah, and I'd rather keep the defines for fields defined in the spec
in nvme.h

> I'm not sure the NVMe NGUID is the same as a GUID (a.k.a little endian
> UUID). Quoting from the spec:

It's not at all, the field just has a very unfortunate name in the
spec.