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From: Andrew Morton <akpm@osdl.org>
To: rohitseth@google.com
Cc: Linux-mm@kvack.org, Linux-kernel@vger.kernel.org
Subject: Re: [PATCH]: Adding a counter in vma to indicate the number of physical pages backing it
Date: Fri, 9 Jun 2006 19:42:36 -0700	[thread overview]
Message-ID: <20060609194236.4b997b9a.akpm@osdl.org> (raw)
In-Reply-To: <1149903235.31417.84.camel@galaxy.corp.google.com>

On Fri, 09 Jun 2006 18:33:55 -0700
Rohit Seth <rohitseth@google.com> wrote:

> Below is a patch that adds number of physical pages that each vma is
> using in a process.  Exporting this information to user space
> using /proc/<pid>/maps interface.

Ouch, that's an awful lot of open-coded incs and decs.  Isn't there some
more centralised place we can do this?

What locking protects vma.nphys (can we call this nr_present or something?)

Will this patch do the right thing with weird vmas such as the gate vma and
mmaps of device memory, etc?

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  reply	other threads:[~2006-06-10  2:42 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-06-10  1:33 Rohit Seth
2006-06-10  2:42 ` Andrew Morton [this message]
2006-06-12 17:49   ` Rohit Seth
2006-06-10  7:35 ` Nick Piggin
2006-06-11 10:15   ` Jan Engelhardt
2006-06-12 17:36   ` Rohit Seth
2006-06-12 17:58     ` Andi Kleen
2006-06-12 19:42       ` Rohit Seth
2006-06-13  3:51         ` Andi Kleen
2006-06-13  4:27           ` Nick Piggin
2006-06-13 16:59           ` Rohit Seth
2006-06-13 17:28             ` Hugh Dickins
2006-06-13 18:09               ` Rohit Seth
2006-06-13 17:31             ` Andi Kleen
2006-06-11 16:09 ` Arjan van de Ven
2006-06-12 11:17   ` Andi Kleen
2006-06-12 12:49     ` Jan Engelhardt
2006-06-12 12:54       ` Andi Kleen
2006-06-12 16:43 ` Christoph Lameter
2006-06-13  5:53 [PATCH]: Adding a counter in vma to indicate the number of physical_pages_backing it Albert Cahalan
2006-06-13  5:56 ` Andi Kleen
2006-06-13 17:10   ` Rohit Seth
2006-06-13 17:18     ` Andi Kleen

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