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    SubjectRe: [RFC] Tracking mlocked pages and moving them off the LRU
    On Mon, 5 Feb 2007, Arjan van de Ven wrote:

    > > I still need a solution for the problem of not having enough page flag
    > > bits on i386 NUMA.
    >
    > I still don't get why you *really* need such a bit.

    Because otherwise you cannot establish why a page was removed from the
    LRU. If a page is off the LRU for other reasons then one should not
    return the page to the LRU in zap_pte_range. How can this determination
    be made without a page flag?

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