linux-kernel - Re: BUG: enable_cpucache failed for radix_tree_node, error 12 (was: Re: [PATCH v3 9/9] slab: remove BAD_ALIEN

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Date:	Fri, 8 Aug 2014 06:50:39 -0500 (CDT)
From:	Christoph Lameter <cl@...ux.com>
To:	Geert Uytterhoeven <geert@...ux-m68k.org>
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: BUG: enable_cpucache failed for radix_tree_node, error 12 (was:
 Re: [PATCH v3 9/9] slab: remove BAD_ALIEN_MAGIC)

On Fri, 8 Aug 2014, Geert Uytterhoeven wrote:

>
> > Of possible, could you check whether page_to_nid(page) returns
> > only 0 or not?
>
> It returns 0 or 1.

Ok this is broken on m68k. CONFIG_NUMA is required for this to work. If
the arch code does this despite !CONFIG_NUMA then lots of things should
break.

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