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SubjectRe: [PATCH 0/3] 64-bit futexes: Intro


On Sat, 31 May 2008, Linus Torvalds wrote:
>
> * Note that we don't need to update the high bits if we
> * succeed (because the writer count is the _pending_ writer
> * count, not the holding one)

Btw, that comment is bogus, ignore it. It comes from an earlier algorithm
I tried that also explained the contention case, but got unnecessarily
complex. Separating out the queuing behaviour from the actual
non-contended behaviour made things much simpler to explain, so I stopped
even bothering with a "both" case.

Too much cut-and-paste, IOW.

Linus


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