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From: Simon Jeons <simon.jeons@gmail.com>
To: Mel Gorman <mgorman@suse.de>
Cc: KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
	lsf-pc@lists.linux-foundation.org,
	"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [Lsf-pc] [LSF/MM TOPIC][ATTEND] a few topics I'd like to discuss
Date: Wed, 20 Feb 2013 19:03:42 +0800	[thread overview]
Message-ID: <5124AD8E.9040105@gmail.com> (raw)
In-Reply-To: <20130218145018.GJ4365@suse.de>

On 02/18/2013 10:50 PM, Mel Gorman wrote:
> On Sun, Feb 17, 2013 at 01:44:33AM -0500, KOSAKI Motohiro wrote:
>> Sorry for the delay.
>>
>> I would like to discuss the following topics:
>>
>>
>>
>> * Hugepage migration ? Currently, hugepage is not migratable and can?t
>> use pages in ZONE_MOVABLE.  It is not happy from point of CMA/hotplug
>> view.
>>
> migrate_huge_page() ?

It seems that migrate_huge_page just called in memory failure path, why 
can't support in memory hotplug path?

>
> It's also possible to allocate hugetlbfs pages in ZONE_MOVABLE but must
> be enabled via /proc/sys/vm/hugepages_treat_as_movable.
>
>> * Remove ZONE_MOVABLE ?Very long term goal. Maybe not suitable in this year.
>>
> Whatever about removing it totally I would like to see node memory hot-remove
> not depending on ZONE_MOVABLE.
>

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  parent reply	other threads:[~2013-02-20 11:03 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-17  6:44 [LSF/MM TOPIC][ATTEND] a few topics I'd like to discuss KOSAKI Motohiro
2013-02-17  7:28 ` Will Huck
2013-02-18 14:50 ` [Lsf-pc] " Mel Gorman
2013-02-19  2:51   ` KOSAKI Motohiro
2013-02-19 11:30     ` Mel Gorman
2013-02-19 21:44       ` KOSAKI Motohiro
2013-02-20 11:03   ` Simon Jeons [this message]
2013-02-23  3:02     ` KOSAKI Motohiro

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