From: Minchan Kim <minchan@kernel.org>
To: Christoph Lameter <cl@gentwo.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
k.kozlowski@samsung.com,
Seth Jennings <sjenning@linux.vnet.ibm.com>,
Mel Gorman <mgorman@suse.de>,
guz.fnst@cn.fujitsu.com, Benjamin LaHaise <bcrl@kvack.org>,
Dave Hansen <dave.hansen@intel.com>,
lliubbo@gmail.com, aquini@redhat.com,
Rik van Riel <riel@redhat.com>
Subject: Re: [RFC 0/3] Pin page control subsystem
Date: Wed, 14 Aug 2013 09:12:37 +0900 [thread overview]
Message-ID: <20130814001236.GC2271@bbox> (raw)
In-Reply-To: <00000140787b6191-ae3f2eb1-515e-48a1-8e64-502772af4700-000000@email.amazonses.com>
Hello Christoph,
On Tue, Aug 13, 2013 at 04:21:30PM +0000, Christoph Lameter wrote:
> On Tue, 13 Aug 2013, Minchan Kim wrote:
>
> > VM sometime want to migrate and/or reclaim pages for CMA, memory-hotplug,
> > THP and so on but at the moment, it could handle only userspace pages
> > so if above example subsystem have pinned a some page in a range VM want
> > to migrate, migration is failed so above exmaple couldn't work well.
>
> Dont we have the mmu_notifiers that could help in that case? You could get
> a callback which could prepare the pages for migration?
Now I'm not familiar with mmu_notifier so please could you elaborate it
a bit for me to dive into that?
Thanks!
>
> --
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--
Kind regards,
Minchan Kim
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next prev parent reply other threads:[~2013-08-14 0:12 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-13 7:04 [RFC 0/3] Pin page control subsystem Minchan Kim
2013-08-13 7:05 ` [RFC 1/3] mm: Introduce new page flag Minchan Kim
2013-08-13 7:05 ` [RFC 2/3] pinpage control subsystem Minchan Kim
2013-08-13 7:05 ` [RFC 3/3] mm: migrate pinned page Minchan Kim
2013-08-13 9:46 ` [RFC 0/3] Pin page control subsystem Krzysztof Kozlowski
2013-08-13 14:23 ` Benjamin LaHaise
2013-08-14 0:08 ` Minchan Kim
2013-08-13 23:54 ` Minchan Kim
2013-08-13 16:21 ` Christoph Lameter
2013-08-14 0:12 ` Minchan Kim [this message]
2013-08-14 16:36 ` Christoph Lameter
2013-08-14 16:47 ` Minchan Kim
2013-08-14 16:58 ` Christoph Lameter
2013-08-15 4:48 ` Minchan Kim
2013-08-15 15:18 ` Christoph Lameter
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