SUNRPC: non-exclusive pipe creation

Hello.
I'm working on making RPC pipefs per network namespace in 3.1.kernel and I don't understand, why pipes are created in non-exclusive mode. IOW we create pipes only in kernel, and, as I see it, each of them have unique name and created under unique directory name. This code looks like obsolete and left from previous logic, which has been replaced a while ago.
Am I right? Or I missed something?

Best regards,
Stanislav Kinsbursky