tree 4c9f6c232350fbaa169816d69bf17c7fdbb14c1e
parent d7a7031a14b6a2039fe6c983da8a82800f07d43a
author Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1422893305 -0800
committer Paul E. McKenney <paulmck@linux.vnet.ibm.com> 1422905621 -0800

documentation: Clarify memory-barrier semantics of atomic operations

All value-returning atomic read-modify-write operations must provide full
memory-barrier semantics on both sides of the operation.  This commit
clarifies the documentation to make it clear that these memory-barrier
semantics are provided by the operations themselves, not by their callers.

Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>