[PATCH 3/3] nvmet: do not allow to create a subsystem with the discovery NQN

[Christoph Hellwig]

On Mon, Mar 14, 2022 at 11:53:33AM +0100, Hannes Reinecke wrote:
> configfs will only protect us against duplication of subsystem NQNs,
> but discovery subsystems might have two NQNs, the standard discovery NQN
> (which will be used as the configfs directory name), and the additional
> unique subsystem NQN.

This is something that we should probably pick up as fix ASAP.  Can
you add a proper fixes tag and submit it stand-alone?