Re: [PATCH] evdev: Replace rcu_assign_pointer() with RCU_INIT_POINTER()

From: Dmitry Torokhov
Date: Mon Aug 18 2014 - 14:41:40 EST


Hi Andreea,

On Mon, Aug 18, 2014 at 05:44:45PM +0300, Andreea-Cristina Bernat wrote:
> The use of "rcu_assign_pointer()" is NULLing out the pointer.
> According to RCU_INIT_POINTER()'s block comment:
> "1. This use of RCU_INIT_POINTER() is NULLing out the pointer"
> it is better to use it instead of rcu_assign_pointer() because it has a
> smaller overhead.
>
> The following Coccinelle semantic patch was used:
> @@
> @@
>
> - rcu_assign_pointer
> + RCU_INIT_POINTER
> (..., NULL)

The same objection as here: https://lkml.org/lkml/2014/3/23/96

Thanks.

--
Dmitry
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