On Wed, May 23, 2018 at 08:02:31AM -0600, Keith Busch wrote: > Looks like the cmpxchg is also needed if old_state is MQ_RQ_TIMED_OUT, > otherwise its guaranteed to return 'true' and there's no point to the > loop and 'if' check. And I see v14 is already posted with that fix! :)