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When the SQ is flushed, mark the flushed entries as not signaled so the poll logic doesn't re-insert the CQ entry thinking its an out of order completion. The bug can cause the NFS/RDMA server to crash due to processing the same completed work request twice. Signed-off-by: Steve Wise <swise@opengridcomputing.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>