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Subject: Re: [PATCH] Kconfig: CONFIG_UNEVICTABLE_LRU move into EMBEDDED 
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From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: Andi Kleen <andi@firstfloor.org>
Cc: LKML <linux-kernel@vger.kernel.org>, linux-mm <linux-mm@kvack.org>,
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>> In past days, I proposed this. but Minchan found this config bloat kernel 7kb
>> and he claim embedded guys should have selectable chance. I agreed it.
>
> Well there's lots of code in the kernel and 7k doesn't seem worth bothering.
> If you just save two pages of memory somewhere you can save more.
>
>> Is this enough explanation?
>
> It's not a very good one.
>
> I would propose to just remove it or at least hide it completely
> and only make it dependent on CONFIG_MMU inside Kconfig.

hm, if minchan ack this, I can remove this option completely.
but I dislike dpend on CONFIG_MMU. it because

1. this featuren don't depend CONFIG_MMU. that's bogus.
2. I don't test !MMU easily rather than MMU. IOW it make code quality risk.