Re: [PATCH v4 00/15] Add futex2 syscalls

* Adhemerval Zanella:

Also currently we don't have a specific usage. The proposed patch to add the 'pthread_mutex_lock_any' and 'pthreada_timedlock_any' [3] also did not gave much detail in realword usages or how it can be leveraged.

The current rwlock implementation in glibc uses a torn 32-bit futex read which is part of an atomically updated 64-bit word. That's just really, really ugly, and I suspect we could make that go away with futex2.

Thanks, Florian