[openib-general] RDMA Generic Connection Management

[Roland Dreier]

    Sean> For this to work, we should ensure that a client is never
    Sean> given a reference to a device that they may have received
    Sean> removal notification for.

This is the hard part: one CPU could start calling into a consumer
with a valid device, but get delayed by an interrupt or something.  In
the meantime, another CPU could remove that device from the consumer,
and then when the first notification finally arrives, it's no longer
valid.

 - R.