linux-kernel - Re: [RFC v2 1/3] migrate: new struct migration and add it to struct page

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Message-ID: <CANFwon26wUA4Dsz3ZBAHw=HAbu75hid1sAk8yWzPRV3Oe_Ogig@mail.gmail.com>
Date:	Mon, 19 Oct 2015 20:08:09 +0800
From:	Hui Zhu <teawater@...il.com>
To:	Minchan Kim <minchan@...nel.org>
Cc:	Vlastimil Babka <vbabka@...e.cz>, Hui Zhu <zhuhui@...omi.com>,
	Nitin Gupta <ngupta@...are.org>,
	Sergey Senozhatsky <sergey.senozhatsky.work@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	Mel Gorman <mgorman@...e.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Johannes Weiner <hannes@...xchg.org>,
	Michal Hocko <mhocko@...e.com>,
	Konstantin Khlebnikov <khlebnikov@...dex-team.ru>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Alexander Duyck <alexander.h.duyck@...hat.com>,
	Tejun Heo <tj@...nel.org>,
	Joonsoo Kim <iamjoonsoo.kim@....com>,
	Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
	Jennifer Herbert <jennifer.herbert@...rix.com>,
	Hugh Dickins <hughd@...gle.com>,
	Vladimir Davydov <vdavydov@...allels.com>,
	David Rientjes <rientjes@...gle.com>,
	Sasha Levin <sasha.levin@...cle.com>,
	"Steven Rostedt (Red Hat)" <rostedt@...dmis.org>,
	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
	Wanpeng Li <wanpeng.li@...mail.com>,
	Geert Uytterhoeven <geert+renesas@...der.be>,
	Greg Thelen <gthelen@...gle.com>,
	Al Viro <viro@...iv.linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [RFC v2 1/3] migrate: new struct migration and add it to struct page

On Thu, Oct 15, 2015 at 5:53 PM, Minchan Kim <minchan@...nel.org> wrote:
> On Thu, Oct 15, 2015 at 11:27:15AM +0200, Vlastimil Babka wrote:
>> On 10/15/2015 11:09 AM, Hui Zhu wrote:
>> >I got that add function interfaces is really not a good idea.
>> >So I add a new struct migration to put all migration interfaces and add
>> >this struct to struct page as union of "mapping".
>>
>> That's better, but not as flexible as the previously proposed
>> approaches that Sergey pointed you at:
>>
>>  http://lkml.iu.edu/hypermail/linux/kernel/1507.0/03233.html
>>  http://lkml.iu.edu/hypermail/linux/kernel/1508.1/00696.html
>>
>> There the operations are reachable via mapping, so we can support
>> the special operations migration also when mapping is otherwise
>> needed; your patch excludes mapping.
>>
>
> Hello Hui,
>
> FYI, I take over the work from Gioh and have a plan to improve the work.
> So, Could you wait a bit? Of course, if you have better idea, feel free
> to post it.
>
> Thanks.

Hi Minchan and Vlastimil,

If you don't mind. I want to wait the patches and focus on page
movable of zsmalloc part.
What do you think about it?

Best,
Hui
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