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    SubjectRe: [PATCH 3/5] Container Freezer: Implement freezer cgroup subsystem
    Paul Menage wrote:
    > On Mon, Nov 3, 2008 at 10:12 PM, Li Zefan <lizf@cn.fujitsu.com> wrote:
    >> I think another reasonable and easier way is to disable writing freezer.state
    >> of top cgroup, so we can skip checks in freezer_fork() for tasks in top cgroup.
    >>
    >
    > Yes, if freezing the root cgroup isn't needed then that is definitely
    > simpler - I wasn't sure if Matt wanted to be able to freeze the root
    > group with this subsystem.
    >

    If someone just mounts the freezer subsystem and freeze the root cgroup,
    all the tasks will be freezed, and then seems all he can do is reset the
    machine (or do a suspend/resume).

    That's why I think it's reasonable to disable it.


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