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    SubjectRe: [PATCH 2/5] Revert "oom: give the dying task a higher priority"
    On Wed, Mar 23, 2011 at 04:42:29PM +0900, KAMEZAWA Hiroyuki wrote:
    | On Tue, 22 Mar 2011 20:06:48 +0900 (JST)
    | KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> wrote:
    |
    | > This reverts commit 93b43fa55088fe977503a156d1097cc2055449a2.
    | >
    | > The commit dramatically improve oom killer logic when fork-bomb
    | > occur. But, I've found it has nasty corner case. Now cpu cgroup
    | > has strange default RT runtime. It's 0! That said, if a process
    | > under cpu cgroup promote RT scheduling class, the process never
    | > run at all.
    | >
    | > Eventually, kernel may hang up when oom kill occur.
    | >
    | > The author need to resubmit it as adding knob and disabled
    | > by default if he really need this feature.
    | >
    | > Cc: Luis Claudio R. Goncalves <lclaudio@uudg.org>
    | > Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
    |
    | Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

    The original patch was written to fix an issue observed in 2.6.24.7-rt.
    As the logic sounded useful, I ported it to upstream. Anyway,I am trying
    a few ideas to rework that patch. In the meantime, I'm pretty fine with
    reverting the commit.

    Acked-by: Luis Claudio R. Gonçalves <lgoncalv@uudg.org>

    --
    [ Luis Claudio R. Goncalves Bass - Gospel - RT ]
    [ Fingerprint: 4FDD B8C4 3C59 34BD 8BE9 2696 7203 D980 A448 C8F8 ]

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