From 931700d26bf17c583805f52121a41231e64868f3 Mon Sep 17 00:00:00 2001
From: Simon Derr <simon.derr@bull.net>
Date: Mon, 10 Mar 2014 16:38:51 +0100
Subject: [PATCH] 9pnet_rdma: add cancelled()

Take into account posted recv buffers that will never receive their
reply.

The RDMA code posts a recv buffer for each request that it sends.
When a request is flushed, it is possible that this request will
never receive a reply, and that one recv buffer will stay unused on
the recv queue.

It is then possible, if this scenario happens several times, to have the
recv queue full, and have the 9pnet_rmda module unable to send new requests.

Signed-off-by: Simon Derr <simon.derr@bull.net>
Signed-off-by: Eric Van Hensbergen <ericvh@gmail.com>
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