From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] Track mlock()ed pages
Date: Fri, 26 Jan 2007 17:30:36 +1100 [thread overview]
Message-ID: <45B9A00C.4040701@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.64.0701252141570.10629@schroedinger.engr.sgi.com>
Christoph Lameter wrote:
> Add NR_MLOCK
>
> Track mlocked pages via a ZVC
I think it is not quite right. You are tracking the number of ptes
that point to mlocked pages, which can be >= the actual number of pages.
Also, page_add_anon_rmap still needs to be balanced with page_remove_rmap.
I can't think of an easy way to do this without per-page state. ie.
another page flag.
>
> Signed-off-by: Christoph Lameter <clameter@sgi.com>
>
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WARNING: multiple messages have this Message-ID (diff)
From: Nick Piggin <nickpiggin@yahoo.com.au>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC] Track mlock()ed pages
Date: Fri, 26 Jan 2007 17:30:36 +1100 [thread overview]
Message-ID: <45B9A00C.4040701@yahoo.com.au> (raw)
In-Reply-To: <Pine.LNX.4.64.0701252141570.10629@schroedinger.engr.sgi.com>
Christoph Lameter wrote:
> Add NR_MLOCK
>
> Track mlocked pages via a ZVC
I think it is not quite right. You are tracking the number of ptes
that point to mlocked pages, which can be >= the actual number of pages.
Also, page_add_anon_rmap still needs to be balanced with page_remove_rmap.
I can't think of an easy way to do this without per-page state. ie.
another page flag.
>
> Signed-off-by: Christoph Lameter <clameter@sgi.com>
>
--
SUSE Labs, Novell Inc.
Send instant messages to your online friends http://au.messenger.yahoo.com
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next prev parent reply other threads:[~2007-01-26 6:30 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-01-26 5:43 [RFC] Track mlock()ed pages Christoph Lameter
2007-01-26 5:43 ` Christoph Lameter
2007-01-26 6:30 ` Nick Piggin [this message]
2007-01-26 6:30 ` Nick Piggin
2007-01-26 6:36 ` Christoph Lameter
2007-01-26 6:36 ` Christoph Lameter
2007-01-26 11:13 ` Andrew Morton
2007-01-26 11:13 ` Andrew Morton
2007-01-26 12:00 ` Nick Piggin
2007-01-26 12:00 ` Nick Piggin
2007-01-26 15:44 ` Christoph Lameter
2007-01-26 15:44 ` Christoph Lameter
2007-01-26 18:10 ` Andrew Morton
2007-01-26 18:10 ` Andrew Morton
2007-01-26 18:21 ` KAMEZAWA Hiroyuki
2007-01-26 18:21 ` KAMEZAWA Hiroyuki
2007-01-26 18:23 ` Christoph Lameter
2007-01-26 18:23 ` Christoph Lameter
2007-01-26 18:42 ` Andrew Morton
2007-01-26 18:42 ` Andrew Morton
2007-01-27 22:19 ` Rik van Riel
2007-01-27 22:19 ` Rik van Riel
2007-01-27 22:30 ` Andrew Morton
2007-01-27 22:30 ` Andrew Morton
2007-01-27 22:36 ` Rik van Riel
2007-01-27 22:36 ` Rik van Riel
2007-01-26 11:46 ` Nick Piggin
2007-01-26 11:46 ` Nick Piggin
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