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Date: Wed, 10 Aug 2005 10:52:53 -0700
From: Andrew Morton <akpm@osdl.org>
To: Mel Gorman <mel@csn.ul.ie>
Cc: linux-kernel@vger.kernel.org
Subject: Re: How to reclaim inode pages on demand
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Mel Gorman <mel@csn.ul.ie> wrote:
>
> > Well there are conditions in which mmapped file pages can get converted to
> > anonymous pages due to truncate(), but I have a feeling that we stopped
> > that from happening.
> >
> 
> Does that also apply to when a file is unlinked rather than truncated?

Yup.  unlink() does truncate if it unlinked the final link.

> In case it is journalling-related, I am going to rerun the tests on an
> ext2 filesystem over the weekend.

Good idea.