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由 Paul E. McKenney 提交于
An atomic_or() function is needed by TREE_RCU to avoid deadlock, so add a generic version. Signed-off-by: NPaul E. McKenney <paul.mckenney@linaro.org> Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com> Signed-off-by: NIngo Molnar <mingo@elte.hu>
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