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A comment on Landing a new syscall, part 1: What is futex?. Parent comment

Re:Landing a new syscall, part 1: What is futex? by gpderetta on Wednesday February 09, 2022 @10:49AM (#30274057)
Most importantly wake and wait are keyed by address. The waker must provide to futex_wake the same address that the waiter passed to futex_wait to wake it.
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