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SubjectRe: [RFC][PATCH 2/2] memcg: hardwall hierarhcy for memcg
On Wed, 04 Jun 2008 14:42:21 +0800
Li Zefan <lizf@cn.fujitsu.com> wrote:

> KAMEZAWA Hiroyuki wrote:
> > Hard-Wall hierarchy support for memcg.
> > - new member hierarchy_model is added to memcg.
> >
> > Only root cgroup can modify this only when there is no children.
> >
> > Adds following functions for supporting HARDWALL hierarchy.
> > - try to reclaim memory at the change of "limit".
> > - try to reclaim all memory at force_empty
> > - returns resources to the parent at destroy.
> >
> > Changelog v2->v3
> > - added documentation.
> > - hierarhcy_model parameter is added.
> >
> >
> > Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> >
> > ---
> > Documentation/controllers/memory.txt | 27 +++++-
> > mm/memcontrol.c | 156 ++++++++++++++++++++++++++++++++++-
> > 2 files changed, 178 insertions(+), 5 deletions(-)
> >
> > Index: temp-2.6.26-rc2-mm1/mm/memcontrol.c
> > ===================================================================
> > --- temp-2.6.26-rc2-mm1.orig/mm/memcontrol.c
> > +++ temp-2.6.26-rc2-mm1/mm/memcontrol.c
> > @@ -137,6 +137,8 @@ struct mem_cgroup {
> > struct mem_cgroup_lru_info info;
> >
> > int prev_priority; /* for recording reclaim priority */
> > +
> > + int hierarchy_model; /* used hierarchical policy */
>
> hierarchy_model can be a global value instead of per cgroup value.
>
Ah, Hmm...yes. thank you for pointing out.

Regards,
-Kame



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