提交 155d1d12 编写于 作者: P Peter Zijlstra 提交者: Paul E. McKenney

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: NPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: NPaul E. McKenney <paulmck@linux.vnet.ibm.com>
上级 be55fa2a
......@@ -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)
/**
......
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