[Devel] Re: [PATCH v8 3/9] socket: initial cgroup code.

[KAMEZAWA Hiroyuki]

On Mon,  5 Dec 2011 19:34:57 -0200
Glauber Costa <glommer at parallels.com> wrote:

> The goal of this work is to move the memory pressure tcp
> controls to a cgroup, instead of just relying on global
> conditions.
> 
> To avoid excessive overhead in the network fast paths,
> the code that accounts allocated memory to a cgroup is
> hidden inside a static_branch(). This branch is patched out
> until the first non-root cgroup is created. So when nobody
> is using cgroups, even if it is mounted, no significant performance
> penalty should be seen.
> 
> This patch handles the generic part of the code, and has nothing
> tcp-specific.
> 
> Signed-off-by: Glauber Costa <glommer at parallels.com>
> CC: Kirill A. Shutemov <kirill at shutemov.name>
> CC: KAMEZAWA Hiroyuki <kamezawa.hiroyu at jp.fujtsu.com>
> CC: David S. Miller <davem at davemloft.net>
> CC: Eric W. Biederman <ebiederm at xmission.com>
> CC: Eric Dumazet <eric.dumazet at gmail.com>

Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu at jp.fujitsu.com>