linux-kernel - Re: 2.6.24-rc5-mm1: problems with cat /proc/kpageflags

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Message-Id: <20071216223917.873e34bf.akpm@linux-foundation.org>
Date:	Sun, 16 Dec 2007 22:39:17 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	David Miller <davem@...emloft.net>
Cc:	mpm@...enic.com, m.kozlowski@...land.pl,
	linux-kernel@...r.kernel.org, sparclinux@...r.kernel.org
Subject: Re: 2.6.24-rc5-mm1: problems with cat /proc/kpageflags

On Sun, 16 Dec 2007 20:26:11 -0800 (PST) David Miller <davem@...emloft.net> wrote:

> From: Matt Mackall <mpm@...enic.com>
> Date: Sun, 16 Dec 2007 20:11:49 -0600
> 
> > But as the function doesn't actually show up in your stack trace,
> > something else is probably wrong. So I'd also try commenting out
> > pieces of that function until it started working.
> 
> Some piece of state is being indirectly corrupted and this
> is showing up later in some unrelated operation.
> 
> Can someone send me this kpageflags patch under seperate
> cover?  I'll try figure out why it farts on sparc64.

hm, non trivial.  It's the third-from-last patch in:

maps4-add-proportional-set-size-accounting-in-smaps.patch
maps4-rework-task_size-macros.patch
maps4-rework-task_size-macros-mips-fix.patch
maps4-move-is_swap_pte.patch
maps4-introduce-a-generic-page-walker.patch
maps4-use-pagewalker-in-clear_refs-and-smaps.patch
maps4-simplify-interdependence-of-maps-and-smaps.patch
maps4-move-clear_refs-code-to-task_mmuc.patch
maps4-regroup-task_mmu-by-interface.patch
maps4-add-proc-pid-pagemap-interface.patch
maps4-add-proc-kpagecount-interface.patch
maps4-add-proc-kpageflags-interface.patch
maps4-make-page-monitoring-proc-file-optional.patch
maps4-make-page-monitoring-proc-file-optional-fix.patch

from
ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.24-rc5/2.6.24-rc5-mm1/broken-out

That patch series does apply OK to mainline though.
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