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    SubjectRe: [PATCH 02/11] mm,migration: Do not try to migrate unmapped anonymous pages
    On Thu, 25 Mar 2010, Mel Gorman wrote:

    > Christoph is opposed to removing it because of cache-hotness issues more
    > so than use-after-free concerns. The refcount is needed with or without
    > SLAB_DESTROY_BY_RCU.

    The issue is only performance. If we can preserve the cache hotness in a
    different way (or do things in a completely different manner) then its
    fine.


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