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    SubjectRe: Switching TestSetPageLocked to trylock_page


    On Tue, 5 Aug 2008, Nick Piggin wrote:
    >
    > The part that helps x86 is another patch further down my stack, which
    > can avoid looking at the hashed page waitqueue at unlock_page-time.
    > Basically this eliminates the entire page waitqueue from the cache
    > footprint of fastpath workloads where the lock is uncontended (often:
    > page faulting, write(2), writeout etc).

    Hmm. Tell me more. Contention bit?

    Linus


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