linux-kernel - Re: [PATCH] iommu: Replace rcu_assign_pointer() with RCU_INIT

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Message-ID: <20140819113147.GC26492@8bytes.org>
Date:	Tue, 19 Aug 2014 13:31:48 +0200
From:	Joerg Roedel <joro@...tes.org>
To:	Andreea-Cristina Bernat <bernat.ada@...il.com>
Cc:	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	paulmck@...ux.vnet.ibm.com
Subject: Re: [PATCH] iommu: Replace rcu_assign_pointer() with
 RCU_INIT_POINTER()

On Mon, Aug 18, 2014 at 03:20:56PM +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)
> 
> Signed-off-by: Andreea-Cristina Bernat <bernat.ada@...il.com>

Applied, thanks.

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