[PATCHv4-4.5 2/7] NVMe: Use IDA for namespace disk naming

[Johannes Thumshirn]

On Wed, Feb 24, 2016 at 09:15:53AM -0700, Keith Busch wrote:
> A namespace may be detached from a controller, but a user may be holding
> a reference to it. Attaching a new namespace with the same NSID will create
> duplicate names when using the NSID to name the disk.
> 
> This patch uses an IDA that is released only when the last reference is
> released instead of using the namespace ID.
> 
> Signed-off-by: Keith Busch <keith.busch at intel.com>
> Reviewed-by: Sagi Grimberg <sagig at mellanox.com>

Reviewed-by: Johannes Thumshirn <jthumshirn at suse.de>

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Johannes Thumshirn                                          Storage
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