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    SubjectRe: Bug: Discontigmem virt_to_page() [Alpha,ARM,Mips64?]
    On Wednesday 01 May 2002 01:12, I wrote:
    > Config_discontigmem
    > -------------------
    > Has exactly one purpose: to eliminate memory wastage due to struct pages
    > that refer to unpopulated regions of memory...

    That is, when not used together with config_numa. When used with config_numa,
    it has a second purpose: to allow ->mem_map arrays to exist on the same numa
    node as the referenced pages. The config_nonlinear patch could be extended
    to handle this as well (by elaborating the definitions of virt_to_page and
    phys_to_page) but I don't have plans to do that at this time.

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