[openib-general] Re: [PATCH 1 of 2] ipoib: pass all of multicast.c through ipoib_workqueue

[Roland Dreier]

    Michael> There appear to be several races in IPoIB multicast code:
    Michael> for example when a MAD event may start the multicast
    Michael> thread, while ipoib_stop tries to stop it, leaving a
    Michael> thread running after the device is removed.

I need help understanding how moving the work queue helps with this.
If one context queues work to stop the thread and then another context
queues work to start it, can't we still end up with the thread running
when the device is removed?

 - R.