linux-kernel - Re: [RFC][PATCH 1/5] pagemap: remove file header

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Date:	Wed, 08 Aug 2007 09:34:39 -0700
From:	Dave Hansen <haveblue@...ibm.com>
To:	Alan Cox <alan@...rguk.ukuu.org.uk>
Cc:	Matt Mackall <mpm@...enic.com>, linux-kernel@...r.kernel.org,
	serue@...ibm.com
Subject: Re: [RFC][PATCH 1/5] pagemap: remove file header

On Wed, 2007-08-08 at 02:31 +0100, Alan Cox wrote:
> The information needed to parse /proc/pid/pagemap can be stuck
> in /proc/pid/somewherelese. If we ever get page size variations and the
> like then /proc/pid/ is going to end up with that information anyway for
> ps and friends to use.

We do at least have some of this with hugetlbfs.  In fact, the current
pagemap code bugs out when it hits a huge page area:

/home/dave/work/linux/2.6/22/lxc/mm/memory.c:117: bad pgd 1d0000e7.

I'll look at fixing that.

-- Dave

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