Comment # 8 on bug 1178304 from Neil Brown

There is only one sunrpc patch between the two kernels that might be relevant.

patches.suse/SUNRPC-Revert-241b1f419f0e-SUNRPC-Remove-xdr_buf_tri.patch

and that looks like a simple revert, which shouldn't introduce any regression.
I'll look closer tomorrow and see what I can find.