[PATCH] nvme: avoid connecting to the same subsystem from the same path gain.

[Christoph Hellwig]

On Mon, Apr 24, 2017 at 09:26:57PM +0800, Guan Junxiong wrote:
> From: Junxiong Guan <guanjunxiong at huawei.com>
> 
> Current code has the defect that we will get more /dev/nvme#n#
> generated in the /dev node if we execute the same connect command
> with nvme-cli tools more than once.

That's not a bug, it's a a feature.