Commit 155d1d12 authored Jun 02, 2015 by Peter Zijlstra Committed by Paul E. McKenney Jul 22, 2015

rcu: Use WRITE_ONCE in RCU_INIT_POINTER



For the paranoid amongst us GCC would be in its right to use byte stores
to write our NULL value, tell it not to do that.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

parent be55fa2a

include/linux/rcupdate.h

+1 −1

Original line number	Diff line number	Diff line
		@@ -995,7 +995,7 @@ static inline notrace void rcu_read_unlock_sched_notrace(void)
		#define RCU_INIT_POINTER(p, v) \
		do { \
		rcu_dereference_sparse(p, __rcu); \
		p = RCU_INITIALIZER(v); \
		WRITE_ONCE(p, RCU_INITIALIZER(v)); \
		} while (0)

		/**