[openib-general] [PATCH/RFC 1/2] IB: Return "maybe_missed_event" hint from ib_req_notify_cq()

[Roland Dreier]

It occurs to me that the behavior of ehca spinning in the IPoIB poll
routine would be exactly the symptom you would see if
ib_req_notify_cq() was incorrectly reporting a missed event when the
CQ is in fact empty.  In that case, the code would jump back to
repoll, find the CQ empty, call ib_req_notify_cq() again, and probably
get another missed event indicator (and jump back to repoll again, etc).

However I looked over the ehca changes in my NAPI branch and they
_still_ look right to me.  So maybe my idea is just hot air.

 - R.