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    SubjectRe: Active Memory Defragmentation: Our implementation & problems
    At 03 Feb 2004 21:54:34 -0800,
    Dave Hansen wrote:
    > Moving file-backed pages is mostly handled already. You can do a
    > regular page-cache lookup with find_get_page(), make your copy,
    > invalidate the old one, then readd the new one. The invalidation can be
    > done in the same style as shrink_list().

    Actually, it is a bit more complicated.
    I have implemented similar functionality for memory hotremoval.

    See my post about memory hotremoval
    for details.
    remap_onepage() and remapd() in the patch are the main functions.

    IWAMOTO Toshihiro

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