From: Christoph Lameter <cl@linux-foundation.org>
To: Izik Eidus <ieidus@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
kvm@vger.kernel.org, aarcange@redhat.com, chrisw@redhat.com,
avi@redhat.com, izike@qumranet.com
Subject: Re: [PATCH 2/4] Add replace_page(), change the mapping of pte from one page into another
Date: Tue, 11 Nov 2008 15:31:18 -0600 (CST) [thread overview]
Message-ID: <Pine.LNX.4.64.0811111527500.27767@quilx.com> (raw)
In-Reply-To: <4919F7EE.3070501@redhat.com>
On Tue, 11 Nov 2008, Izik Eidus wrote:
> > What do you mean by kernel page? The kernel can allocate a page and then
> > point a user space pte to it. That is how page migration works.
> >
> i mean filebacked page (!AnonPage())
ok.
> ksm need the pte inside the vma to point from anonymous page into filebacked
> page
> can migrate.c do it without changes?
So change anonymous to filebacked page?
Currently page migration assumes that the page will continue to be part
of the existing file or anon vma.
What you want sounds like assigning a swap pte to an anonymous page? That
way a anon page gains membership in a file backed mapping.
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next prev parent reply other threads:[~2008-11-11 21:31 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-11-11 13:21 [PATCH 0/4] ksm - dynamic page sharing driver for linux Izik Eidus
2008-11-11 13:21 ` [PATCH 1/4] rmap: add page_wrprotect() function, Izik Eidus, Izik Eidus
2008-11-11 13:21 ` [PATCH 2/4] Add replace_page(), change the mapping of pte from one page into another Izik Eidus, Izik Eidus
2008-11-11 13:21 ` [PATCH 3/4] add ksm kernel shared memory driver Izik Eidus, Izik Eidus
2008-11-11 13:21 ` [PATCH 4/4] MMU_NOTIFIRES: add set_pte_at_notify() Izik Eidus, Izik Eidus
2008-11-11 20:38 ` [PATCH 3/4] add ksm kernel shared memory driver Andrew Morton
2008-11-11 22:03 ` Andrea Arcangeli
2008-11-11 22:03 ` Jonathan Corbet
2008-11-11 22:17 ` Izik Eidus
2008-11-11 22:25 ` Jonathan Corbet
2008-11-11 22:31 ` Izik Eidus
2008-11-11 22:30 ` Jonathan Corbet
2008-11-11 22:38 ` Izik Eidus
2008-11-11 23:02 ` Izik Eidus
2008-11-11 23:03 ` Andrea Arcangeli
2008-11-11 22:49 ` Avi Kivity
2008-11-11 22:40 ` Valdis.Kletnieks
2008-11-13 6:13 ` Eric Rannaud
2008-11-11 22:43 ` Avi Kivity
2008-11-11 19:45 ` [PATCH 2/4] Add replace_page(), change the mapping of pte from one page into another Andrew Morton
2008-11-11 20:57 ` Izik Eidus
2008-11-11 21:21 ` Christoph Lameter
2008-11-11 21:23 ` Izik Eidus
2008-11-11 21:31 ` Christoph Lameter [this message]
2008-11-11 21:37 ` Izik Eidus
2008-11-11 22:24 ` Andrea Arcangeli
2008-11-12 2:19 ` KAMEZAWA Hiroyuki
2008-11-12 10:05 ` Avi Kivity
2008-11-12 11:11 ` Izik Eidus
2008-11-13 6:11 ` KAMEZAWA Hiroyuki
2008-11-13 10:38 ` Izik Eidus
2008-11-13 11:32 ` KAMEZAWA Hiroyuki
2008-11-11 21:35 ` Andrea Arcangeli
2008-11-11 21:06 ` Andrea Arcangeli
2008-11-11 21:26 ` Christoph Lameter
2008-11-11 21:39 ` Avi Kivity
2008-11-11 21:47 ` Christoph Lameter
2008-11-11 21:55 ` Izik Eidus
2008-11-11 22:36 ` Avi Kivity
2008-11-11 22:17 ` Andrea Arcangeli
2008-11-11 22:30 ` Christoph Lameter
2008-11-11 23:17 ` Andrea Arcangeli
2008-11-11 23:25 ` Andrea Arcangeli
2008-11-12 0:27 ` Christoph Lameter
2008-11-12 2:27 ` Andrea Arcangeli
2008-11-12 3:10 ` Christoph Lameter
2008-11-12 17:32 ` Andrea Arcangeli
2008-11-12 20:08 ` Lee Schermerhorn
2008-11-12 20:31 ` Christoph Lameter
2008-11-12 20:27 ` Christoph Lameter
2008-11-12 22:09 ` Lee Schermerhorn
2008-11-13 2:00 ` Andrea Arcangeli
2008-11-13 2:31 ` Andrea Arcangeli
2008-11-13 4:02 ` Nick Piggin
2008-11-11 19:39 ` [PATCH 1/4] rmap: add page_wrprotect() function, Andrew Morton
2008-11-11 20:38 ` Andrea Arcangeli
2008-11-11 21:01 ` Andrew Morton
2008-11-11 21:17 ` Andrea Arcangeli
2008-11-11 18:30 ` [PATCH 0/4] ksm - dynamic page sharing driver for linux Andrew Morton
2008-11-11 18:48 ` Avi Kivity
2008-11-11 19:08 ` Izik Eidus
2008-11-11 19:11 ` Andrew Morton
2008-11-11 19:18 ` Izik Eidus
2008-11-11 19:32 ` Andrew Morton
2008-11-11 19:52 ` Izik Eidus
2008-11-11 20:08 ` Izik Eidus
2008-11-11 19:29 ` Avi Kivity
2008-11-11 19:55 ` Andrea Arcangeli
2008-11-11 19:07 ` Izik Eidus
2008-11-11 19:20 ` Andrew Morton
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