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Date:	Fri, 8 Aug 2014 17:08:37 +0200
From:	Geert Uytterhoeven <geert@...ux-m68k.org>
To:	Christoph Lameter <cl@...ux.com>
Cc:	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pekka Enberg <penberg@...nel.org>,
	David Rientjes <rientjes@...gle.com>,
	Linux MM <linux-mm@...ck.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Vladimir Davydov <vdavydov@...allels.com>
Subject: Re: [PATCH for v3.17-rc1] Revert "slab: remove BAD_ALIEN_MAGIC"

On Fri, Aug 8, 2014 at 4:44 PM, Christoph Lameter <cl@...ux.com> wrote:
> On Fri, 8 Aug 2014, Joonsoo Kim wrote:
>
>> This reverts commit a640616822b2 ("slab: remove BAD_ALIEN_MAGIC").
>
> Lets hold off on this one. I am bit confused as to why a non NUMA system
> would have multiple NUMA nodes.

DISCONTIGMEM

mm/Kconfig:

#
# Both the NUMA code and DISCONTIGMEM use arrays of pg_data_t's
# to represent different areas of memory.  This variable allows
# those dependencies to exist individually.
#
config NEED_MULTIPLE_NODES
        def_bool y
        depends on DISCONTIGMEM || NUMA

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
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