From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
Date: Sat, 19 Oct 2013 16:23:19 -0700

While looking into allowing the ipv4 sysctls to be used in a network
namespace I stumbled upon the mess that is tcp_memcontrol.

I remove the dead code, broken code, and excessive abstraction in the
tcp_memcontrols then I clean up up and allow in the user namespace the
per net ipv4 sysctls.

I wish we hadn't installed this stuff in the first place, but better
to take care of it now than later.

Series applied, thanks Eric.