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From: Minchan Kim <minchan@kernel.org>
To: Pekka Enberg <penberg@kernel.org>
Cc: Jens Axboe <axboe@kernel.dk>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Nitin Gupta <ngupta@vflare.org>,
	Konrad Rzeszutek Wilk <konrad@darnok.org>,
	Seth Jennings <sjenning@linux.vnet.ibm.com>,
	Dan Magenheimer <dan.magenheimer@oracle.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH 1/3] zsmalloc: promote to lib/
Date: Thu, 27 Sep 2012 10:39:12 +0900	[thread overview]
Message-ID: <20120927013912.GB10229@bbox> (raw)
In-Reply-To: <CAOJsxLGjp5PAgPe3KSvMfqJEyVC4YHeP+FW3AmnCorpHqnfang@mail.gmail.com>

Hi Pekka,

On Wed, Sep 26, 2012 at 12:51:49PM +0300, Pekka Enberg wrote:
> On Wed, Sep 26, 2012 at 11:50 AM, Minchan Kim <minchan@kernel.org> wrote:
> >  lib/Kconfig                              |    2 +
> >  lib/Makefile                             |    1 +
> >  lib/zsmalloc/Kconfig                     |   18 +
> >  lib/zsmalloc/Makefile                    |    1 +
> >  lib/zsmalloc/zsmalloc.c                  | 1064 ++++++++++++++++++++++++++++++
> 
> What's wrong with mm/zsmalloc.c?

Why I put zsmalloc into under mm firstly is that Andrew had a concern
about using strut page's some fields freely in zsmalloc so he wanted
to maintain it in mm/ if I remember correctly.

So I and Nitin tried to ask the opinion to akpm several times
(at least 5 and even I sent such patch a few month ago) but didn't get
any reply from him so I guess he doesn't have any concern about that
any more.

In point of view that it's an another slab-like allocator,
it might be proper under mm but it's not popular as current mm's 
allocators(/SLUB/SLOB and page allocator).

Frankly speaking, I'm okay whether we put it to mm/ or lib/.
But it seems Nitin and Konrad like lib/ and Andrew is silent.
That's why I am biased into lib/ now.

If someone yell we should keep it to mm/ by logical claim,
I can change my mind easily.
But I've never heard abut that until now.

> 
> --
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-- 
Kind regards,
Minchan Kim

--
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  parent reply	other threads:[~2012-09-27  1:36 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-09-26  8:50 [PATCH 0/3] zram/zsmalloc promotion Minchan Kim
2012-09-26  8:50 ` [PATCH 1/3] zsmalloc: promote to lib/ Minchan Kim
2012-09-26  9:42   ` Wanlong Gao
2012-09-26  9:51   ` Pekka Enberg
2012-09-26 17:06     ` Nitin Gupta
2012-09-27  1:39     ` Minchan Kim [this message]
2012-09-27  1:47       ` Andrew Morton
2012-09-27  1:50         ` Minchan Kim
2012-09-26  8:50 ` [PATCH 2/3] zram: promote zram from staging Minchan Kim
2012-09-26  9:54   ` Pekka Enberg
2012-09-26  8:50 ` [PATCH 3/3] zram: select ZSMALLOC when ZRAM is configured Minchan Kim
2012-09-26 16:15   ` Greg Kroah-Hartman
2012-09-26 16:23     ` Calvin Walton
2012-09-26 16:29       ` Greg Kroah-Hartman
2012-09-27  1:53         ` Minchan Kim

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