Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH v3 06/15] futex: FLAGS_STRICT | Date | Thu, 21 Sep 2023 17:14:34 +0200 |
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On Thu, Sep 21 2023 at 12:45, peterz@infradead.org wrote: > The current semantics for futex_wake() are a bit loose, specifically > asking for 0 futexes to be woken actually gets you 1. > > Adding a !nr check to sys_futex_wake() makes that it would return 0 > for unaligned futex words, because that check comes in the shared > futex_wake() function. Adding the !nr check there, would affect the > legacy sys_futex() semantics. > > Hence frob a flag :-( > > Suggested-by: André Almeida <andrealmeid@igalia.com> > Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
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