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Richard Braun authored
Add atomic_xchg() to documentation for atomic operations and memory barriers. Signed-off-by:
Richard Braun <rbraun@sceen.net> Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by:
Josh Triplett <josh@joshtriplett.org>
7e8b1e78