[PATCH v3 3/3] nvme_fc: Avoid duplicate associations between same port pairs

[Christoph Hellwig]

On Thu, Sep 14, 2017 at 10:38:43AM -0700, James Smart wrote:
> Rescans can occur due to subsystem list changes on an FC remoteport.
> Rescans may attempt to reconnect to subsystems where there is already
> an association in place. There should only be 1 association in place
> at a time for the following tuple:
>   <hostnqn, hostid, host FC port, target FC port, subnqn>

There is absolutely no requirement for this limitation in the NVMe
spec.