Messages in this thread | | | From | Florian Weimer <> | Subject | Re: [RFC v2 PATCH] futex: extend set_robust_list to allow 2 locking ABIs at the same time. | Date | Tue, 05 Nov 2019 10:48:39 +0100 |
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* Shawn Landden:
> If this new ABI is used, then bit 1 of the *next pointer of the > user-space robust_list indicates that the futex_offset2 value should > be used in place of the existing futex_offset.
The futex interface currently has some races which can only be fixed by API changes. I'm concerned that we sacrifice the last bit for some rather obscure feature. What if we need that bit for fixing the correctness issues?
Thanks, Florian
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