linux-kernel - Re: [PATCH 6/7] slub: Drop ->page field from kmem_cache

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Message-ID: <CAOJsxLGtqtDSvvSXnQBGdXFfX_osWKuQ5R8Q0ai0VMv2hQC3eg@mail.gmail.com>
Date:	Wed, 10 Dec 2014 19:29:45 +0200
From:	Pekka Enberg <penberg@...nel.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	akpm <akpm@...uxfoundation.org>,
	Steven Rostedt <rostedt@...dmis.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>, iamjoonsoo@....com,
	Jesper Dangaard Brouer <brouer@...hat.com>
Subject: Re: [PATCH 6/7] slub: Drop ->page field from kmem_cache_cpu

On Wed, Dec 10, 2014 at 6:30 PM, Christoph Lameter <cl@...ux.com> wrote:
> Dropping the page field is possible since the page struct address
> of an object or a freelist pointer can now always be calcualted from
> the address. No freelist pointer will be NULL anymore so use
> NULL to signify the condition that the current cpu has no
> percpu slab attached to it.
>
> Signed-off-by: Christoph Lameter <cl@...ux.com>

Reviewed-by: Pekka Enberg <penberg@...nel.org>
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