There is an additional patch that hit 3.17 upstream recently. It is marked for stable but had not enough time to come through:
commit 2f3169fb18f4643ac9a6a097a6a6c71f0b2cef75 Author: Fabian Frederick <email address hidden> Date: Wed Sep 24 18:56:11 2014 +0200
nfs: fix duplicate proc entries
There is an additional patch that hit 3.17 upstream recently. It is marked for stable but had not enough time to come through:
commit 2f3169fb18f4643 ac9a6a097a6a6c7 1f0b2cef75
Author: Fabian Frederick <email address hidden>
Date: Wed Sep 24 18:56:11 2014 +0200
nfs: fix duplicate proc entries