From c2922c0235aac1c787fa81e24d7d7e93c2202275 Mon Sep 17 00:00:00 2001
From: Chuck Lever <chuck.lever@oracle.com>
Date: Tue, 29 Jul 2014 17:24:36 -0400
Subject: [PATCH] xprtrdma: Properly handle exhaustion of the rb_mws list

If the rb_mws list is exhausted, clean up and return NULL so that
call_allocate() will delay and try again.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Tested-by: Steve Wise <swise@opengridcomputing.com>
Tested-by: Shirley Ma <shirley.ma@oracle.com>
Tested-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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