[PATCH 1/7] nvme: track subsystems

[Martin K. Petersen]

Christoph,

> This adds a new nvme_subsystem structure so that we can track multiple
> controllers that belong to a single subsystem.  For now we only use it
> to store the NQN, and to check that we don't have duplicate NQNs
> unless the involved subsystems support multiple controllers.
>
> Includes code originally from Hannes Reinecke to expose the subsystems
> in sysfs.

Reviewed-by: Martin K. Petersen <martin.petersen at oracle.com>

-- 
Martin K. Petersen	Oracle Linux Engineering