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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
userspace?
That would make them really fast, not just saving 50 or 100 cycles
through a special syscall and bypassing VFS.

--
Manfred
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