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    SubjectRe: [RFC][PATCH 1/3] radix priority search tree - objrmap complexity fix
    On Mon, 29 Mar 2004, Andrew Morton wrote:
    > hmm, yes, we have pages which satisfy PageSwapCache(), but which are not
    > actually in swapcache.
    > How about we use the normal pagecache APIs for this?
    > + add_to_page_cache(page, &swapper_space, entry.val, GFP_NOIO);
    > + remove_from_page_cache(page);

    Much nicer, and it'll probably appear to work: but (also untested)
    I bet you'll need an additional page_cache_release(page) - damn,
    looks like hugetlbfs has found a use for that tiresome asymmetry.


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