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    SubjectRe: [PATCH 3/12] memcg make root cgroup unlimited.
    On Fri, 26 Sep 2008 14:11:00 +0530
    Balbir Singh <balbir@linux.vnet.ibm.com> wrote:

    > KAMEZAWA Hiroyuki wrote:
    > > Make root cgroup of memory resource controller to have no limit.
    > >
    > > By this, users cannot set limit to root group. This is for making root cgroup
    > > as a kind of trash-can.
    > >
    > > For accounting pages which has no owner, which are created by force_empty,
    > > we need some cgroup with no_limit. A patch for rewriting force_empty will
    > > will follow this one.
    > >
    > > Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
    >
    > This is an ABI change (although not too many people might be using it, I wonder
    > if we should add memory.features (a set of flags and let users enable them and
    > provide good defaults), like sched features.
    >
    I think "feature" flag is complicated, at this stage.
    We'll add more features and not settled yet.

    Hmm, if you don't like this,
    calling try_to_free_page() at force_empty() instead of move_account() ?


    Thanks,
    -Kame



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