Re: [PATCH] rcu: convert uses of rcu_assign_pointer(x, NULL) toRCU_INIT_POINTER

[David Miller]

From: Stephen Hemminger <shemminger@xxxxxxxxxx>
Date: Mon, 1 Aug 2011 09:19:00 -0700

> When assigning a NULL value to an RCU protected pointer, no barrier
> is needed. The rcu_assign_pointer, used to handle that but will soon
> change to not handle the special case.
> 
> Convert all rcu_assign_pointer of NULL value.
> 
> //smpl
> @@ expression P; @@
> 
> - rcu_assign_pointer(P, NULL)
> + RCU_INIT_POINTER(P, NULL)
> 
> // </smpl>
> 
> 
> Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxxxx>

Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
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