[ofa-general] [PATCH] ib_ipoib: fix race detaching from mcast group before attaching

[Roland Dreier]

 > The attach QP only occurs in the context of the multicast callback thread.
 > ib_sa_free_multicast() blocks until the callback returns, which ensures that the
 > detach check/call (which is now done after ib_sa_free_multicast) cannot race
 > with the attach call.

OK, makes sense.  Do we have confirmation that this fixes the original
problem?  If so I'll queue this up...

 - R.