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    SubjectRe: [RFC][PATCH 1/4] New css->refcnt implementation.
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    On Fri, Dec 5, 2008 at 3:24 AM, KAMEZAWA Hiroyuki
    <kamezawa.hiroyu@jp.fujitsu.com> wrote:
    >> The basic rule is that you're only supposed to increment the css
    >> refcount if you have:
    >>
    >> - a reference to a task in the cgroup (that is pinned via task_lock()
    >> so it can't be moved away)
    >> or
    >> - an existing reference to the css
    >>
    > My problem is that we can do css_get() after pre_destroy() and
    > css's refcnt goes down to 0.

    But where are you getting the reference from in order to do css_get()?
    Which call in mem cgroup are you concerned about?

    Paul


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