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    SubjectRe: [RFC][PATCH 0/4] Memory controller soft limit patches
    > >   1. please fix current bugs on hierarchy management, before new feature.
    > > AFAIK, OOM-Kill under hierarchy is broken. (I have patches but waits for
    > > merge window close.)
    >
    > I've not hit the OOM-kill issue under hierarchy so far, is the OOM
    > killer selecting a bad task to kill? I'll debug/reproduce the issue.
    > I am not posting these patches for inclusion, fixing bugs is
    > definitely the highest priority.
    >
    I agree.

    Just FYI, I have several bug fix patches for current memcg(that is for .29).
    I've been testing them now, and it survives my test(rmdir aftre task move
    under memory pressure and page migration) w/o big problem(except oom) for hours
    in both use_hierarchy==0/1 case.

    > > I wonder there will be some others. Lockdep error which Nishimura reported
    > > are all fixed now ?
    >
    > I run all my kernels and tests with lockdep enabled, I did not see any
    > lockdep errors showing up.
    >
    I think Paul's hierarchy_mutex patches fixed the dead lock, I haven't seen
    the dead lock after the patch.
    (Although, it may cause another dead lock when other subsystems are added.)


    Thanks,
    Daisuke Nishimura.


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