Subject: Re: Page scan keeps touching kernel text pages
From: Dave Hansen <haveblue@us.ibm.com>
To: Andy Whitcroft <apw@shadowen.org>
Cc: =?ISO-8859-1?Q?J=F6rn?= Engel <joern@logfs.org>, linux-mm@kvack.org,
       linux-kernel@vger.kernel.org
In-Reply-To: <20080225150724.GF2604@shadowen.org>
References: <20080224144710.GD31293@lazybastard.org>
	 <20080225150724.GF2604@shadowen.org>
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Date: Mon, 25 Feb 2008 09:48:22 -0800
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On Mon, 2008-02-25 at 15:07 +0000, Andy Whitcroft wrote:
> shrink_page_list() would be expected to be passed pages pulled from
> the active or inactive lists via isolate_lru_pages()?  I would not have
> expected to find the kernel text on the LRU and therefore not expect to
> see it passed to shrink_page_list()?

It may have been kernel text at one time, but what about __init
functions?  Don't we free that section back to the normal allocator
after init time?  Those can end up on the LRU.

-- Dave

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