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    SubjectRe: [QUICKLIST 1/5] Quicklists for page table pages V3
    On Tue, 20 Mar 2007, Paul Mackerras wrote:

    > Christoph Lameter writes:
    >
    > > +static inline void *quicklist_alloc(int nr, gfp_t flags, void (*ctor)(void *))
    > > +{
    >
    > ...
    >
    > > + p = (void *)__get_free_page(flags | __GFP_ZERO);
    >
    > This will cause problems on 64-bit powerpc, at least with 4k pages,
    > since the pmd and pgd levels only use 1/4 of a page.

    quicklists are only useful for page sized allocations. If you have smaller
    sizes then by all means continue the use of slab. You do not have a page
    struct for each pmd, pgd to do bad things with (like i386) so everything
    is just fine.
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