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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>
This commit is contained in:
Peter Zijlstra 2015-06-02 17:26:48 +02:00 committed by Paul E. McKenney
parent be55fa2ad2
commit 155d1d1278
1 changed files with 1 additions and 1 deletions
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2
include/linux/rcupdate.h
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@ -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)
/**