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SubjectRe: [PATCH 2/2] Futex non-page-pinning fix
On Tue, 2003-08-26 at 09:02, Andrew Morton wrote:

> umm, how about hashing only on offset into page? That reduces the number of
> threads which need to be visited in futex_wake() by a factor of up to 1024.

How likely do you consider it that we then get a major collision?
I wouldn't be surprised if, say, glibc lays some hot futexes out in a
way that's the same for all processes in the system, like start of the
page.... Might as well not hash :)

Arjan van de Ven
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