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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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