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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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