[PATCH] nvmet: preserve controller serial number between reboots

[Christoph Hellwig]

On Thu, Jul 13, 2017 at 03:30:39PM +0300, Sagi Grimberg wrote:
> It seems weird that a subsystem has a serial.

But that's actually how NVMe defines them.  Which mean we first
need to fix our code to generate a serial number per subsystem,
and on top of that the patch from Johannes seems perfectly reasonable.