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    SubjectRe: page fault scalability patch final : i386 tested, x86_64 support added
    On Sat, 28 Aug 2004 01:36:02 +0200
    Andi Kleen <ak@suse.de> wrote:

    > On some architectures it used to be 24bit only even, but I think that
    > has been fixed.

    It has, on sparc32 the hashed spinlock scheme is being used
    so it's a full 32-bit counter now.

    Well, it's not even 32-bits, it's actually 31-bits since the
    value is declared as signed.

    Only 64-bit platforms provide the atomic64_t implementation.
    We'd need to deal with that before making your suggested
    change.
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