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Date: Sun, 04 Nov 2001 10:59:21 -0800
From: Andrew Morton <akpm@zip.com.au>
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To: Patrick Mau <mau@oscar.prima.de>,
        Linux Kernel <linux-kernel@vger.kernel.org>,
        Linus Torvalds <torvalds@transmeta.com>
Subject: Re: 2.4.14-pre8: 'free' still reports bogus 'cached' value.
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Andrew Morton wrote:
> 
> It's a bug in the /proc code.  If buffercache pages exceed
> pagecache pages, `pg_size' flips negative.
> 
> There doesn't seem to be any reason to subtract buffermem_pages
> from page_cache_size - they're independent.
> 

Well that was crap, wasn't it?  Wrong kernel.

I wonder if it's due to the fact that grow_dev_page()
calls find_or_create_page(), but we increment the
buffermem_pages count unconditionally, whether or
not the page was newly created?
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