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    SubjectRe: [RFC v2] Support volatile range for anon vma
    >> - making zero page daemon and avoid pagesize zero fill at page fault
    >> - making new vma or page flags and mark as discardable w/o swap and
    >> vmscan treat it. (like this and/or MADV_FREE)
    >
    > Thanks for the information.
    > I realized by you I'm not first people to think of this idea.
    > Rik already tried it(https://lkml.org/lkml/2007/4/17/53) by new page flag
    > and even other OSes already have such good feature. And John's concept was
    > already tried long time ago (https://lkml.org/lkml/2005/11/1/384)
    >
    > Hmm, I look over Rik's thread but couldn't find why it wasn't merged
    > at that time. Anyone know it?

    Dunno. and I like volatile feature than old one. but bold remark, please don't
    100% trust me, I haven't review a detailed code of your patch and I don't
    strictly understand it.


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