On Tue, Jun 02, 2015 at 05:26:48PM +0200, Peter Zijlstra wrote:
>
> 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) <pet...@infradead.org>
Good point, queued for 4.3.
Thanx, Paul
> ---
> 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 33a056bb886f..e173847b6543 100644
> --- a/include/linux/rcupdate.h
> +++ b/include/linux/rcupdate.h
> @@ -1046,7 +1046,7 @@ 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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