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    SubjectRe: [PATCH] fix mem_cgroup_split_huge_fixup to work efficiently.
    On Mon, 21 Nov 2011 16:30:11 +0530
    Balbir Singh <bsingharora@gmail.com> wrote:

    > On Thu, Nov 17, 2011 at 7:03 AM, KAMEZAWA Hiroyuki
    > <kamezawa.hiroyu@jp.fujitsu.com> wrote:
    > >
    > > I'll send this again when mm is shipped.
    > > I sometimes see mem_cgroup_split_huge_fixup() in perf report and noticed
    > > it's very slow. This fixes it. Any comments are welcome.
    > >
    >
    > How do you see this - what tests?
    >
    Sometimes. By applications calling fork() or mremap(), mprotect(), which
    will cause split_huge_page().
    But not 100% reporoducable, yet.

    Thanks,
    -Kame



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