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    SubjectRe: [PATCH][RFC] Lightweight user-level semaphores
    > Actually, the more I look at Linus's original idea, the more
    > sense it seems to make (and the more I regret scrapping my
    > almost-complete implementation of it for the fd idea :)

    Do you have a plan how to implement the no-contention case entirely in
    That would make them really fast, not just saving 50 or 100 cycles
    through a special syscall and bypassing VFS.

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