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Paul E. McKenney authored
Use of smp_mb__after_unlock_lock() would allow SRCU to omit a full memory barrier during callback execution, so this commit converts raw_spin_lock_rcu_node() from inline functions to type-generic macros to allow them to handle locks in srcu_node structures as well as rcu_node structures. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
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