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    SubjectRe: [PATCH] General purpose zeroed page slab
    > It's probably worth doing this with a static cachep in slab.c and only
    > exposing a get_zeroed_page() / free_zeroed_page() interface, with the
    > latter doing the memset to 0.

    Putting a memset in there would be dumb because the mm cleanup already
    zeroes the page tables.

    My dirty bitmap proposal would make that faster however, same as
    copy_page_range et.al.

    > I disagree with Andi over the dumbness
    > of zeroing the whole page. That makes it cache-hot, which is what you
    > want from a page you allocate from slab.

    It's already cache hot from the page table free and you only want one cache
    line in it cache hot, not the whole page.

    -Andi
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