Messages in this thread | | | Date | Mon, 4 Aug 2008 21:25:29 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: Switching TestSetPageLocked to trylock_page |
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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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