linux-kernel - Re: [PATCH] Kconfig: CONFIG_UNEVICTABLE

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Message-ID: <2f11576a0905130458x2e56e952ga47216da42b30906@mail.gmail.com>
Date:	Wed, 13 May 2009 20:58:20 +0900
From:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, linux-mm <linux-mm@...ck.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Lee Schermerhorn <Lee.Schermerhorn@...com>,
	Minchan@...stfloor.org
Subject: Re: [PATCH] Kconfig: CONFIG_UNEVICTABLE_LRU move into EMBEDDED 
	submenu

>> 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.
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