linux-kernel - Re: [RFC] Limit the size of the pagecache

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Message-ID: <Pine.LNX.4.64.0701240655400.9696@schroedinger.engr.sgi.com>
Date:	Wed, 24 Jan 2007 06:56:59 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>
cc:	Aubrey Li <aubreylee@...il.com>,
	Nick Piggin <nickpiggin@...oo.com.au>,
	Robin Getz <rgetz@...ckfin.uclinux.org>,
	"Henn, erich, Michael" <Michael.Hennerich@...log.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC] Limit the size of the pagecache

On Wed, 24 Jan 2007, Vaidyanathan Srinivasan wrote:

> With your patch, MMAP of a file that will cross the pagecache limit hangs the
> system.  As I mentioned in my previous mail, without subtracting the
> NR_FILE_MAPPED, the reclaim will infinitely try and fail.

Well mapped pages are still pagecache pages.
 
> I have tested your patch with the attached fix on my PPC64 box.

Interesting. What is your reason for wanting to limit the size of the 
pagecache?

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