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0aa7be05d8
Add generic support for try_cmpxchg64{,_acquire,_release,_relaxed} and their falbacks involving cmpxchg64. Signed-off-by: Uros Bizjak <ubizjak@gmail.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lkml.kernel.org/r/20220515184205.103089-2-ubizjak@gmail.com