From 155d1d12786386d21732f9bba036343ffa43847d Mon Sep 17 00:00:00 2001 From: Peter Zijlstra Date: Tue, 2 Jun 2015 17:26:48 +0200 Subject: [PATCH] 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) Signed-off-by: Paul E. McKenney --- include/linux/rcupdate.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h index def6d45ad61c..c63428c1ed8a 100644 --- a/include/linux/rcupdate.h +++ b/include/linux/rcupdate.h @@ -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) /** -- 2.39.5