linux-kernel - Re: [RFC][PATCH 4/5] introduce TASK_SIZE

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Date:	Wed, 08 Aug 2007 11:19:28 -0700
From:	Dave Hansen <haveblue@...ibm.com>
To:	Matt Mackall <mpm@...enic.com>
Cc:	linux-kernel@...r.kernel.org, serue@...ibm.com,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [RFC][PATCH 4/5] introduce TASK_SIZE_OF() for all arches

On Tue, 2007-08-07 at 21:03 -0500, Matt Mackall wrote:
> On Tue, Aug 07, 2007 at 03:33:03PM -0700, Dave Hansen wrote:
> > 
> > For the /proc/<pid>/pagemap code[1], we need to able to query how
> > much virtual address space a particular task has.  The trick is
> > that we do it through /proc and can't use TASK_SIZE since it
> > references "current" on some arches.  The process opening the
> > /proc file might be a 32-bit process opening a 64-bit process's
> > pagemap file.
> 
> That seems perfectly sensible to me, but I think you'll need to bounce
> it off Andrew at least. (cc:ed)

It definitely needs a trip to linux-arch.  

-- Dave

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