linux-kernel - Re: [PATCH v3 2/9] slab: move up code to get kmem_cache_node in free

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Message-ID: <alpine.DEB.2.02.1407011520120.4004@chino.kir.corp.google.com>
Date:	Tue, 1 Jul 2014 15:21:21 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	Joonsoo Kim <iamjoonsoo.kim@....com>
cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Christoph Lameter <cl@...ux.com>,
	Pekka Enberg <penberg@...nel.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org,
	Vladimir Davydov <vdavydov@...allels.com>
Subject: Re: [PATCH v3 2/9] slab: move up code to get kmem_cache_node in
 free_block()

On Tue, 1 Jul 2014, Joonsoo Kim wrote:

> node isn't changed, so we don't need to retreive this structure
> everytime we move the object. Maybe compiler do this optimization,
> but making it explicitly is better.
> 

Qualifying the pointer as const would be even more explicit.

> Acked-by: Christoph Lameter <cl@...ux.com>
> Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@....com>

Acked-by: David Rientjes <rientjes@...gle.com>
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