From cdd9ade711599e7672a635add0406080856f8b92 Mon Sep 17 00:00:00 2001
From: Chuck Lever <chuck.lever@oracle.com>
Date: Wed, 28 May 2014 10:33:00 -0400
Subject: [PATCH] xprtrdma: mount reports "Invalid mount option" if memreg mode
 not supported

If the selected memory registration mode is not supported by the
underlying provider/HCA, the NFS mount command reports that there was
an invalid mount option, and fails. This is misleading.

Reporting a problem allocating memory is a lot closer to the truth.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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