linux-kernel - Re: [RPC][PATCH 2.6.20-rc5] limit total vfs page cache

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Message-ID: <Pine.LNX.4.64.0701221114060.25121@schroedinger.engr.sgi.com>
Date:	Mon, 22 Jan 2007 11:15:46 -0800 (PST)
From:	Christoph Lameter <clameter@....com>
To:	Nick Piggin <nickpiggin@...oo.com.au>
cc:	Aubrey Li <aubreylee@...il.com>,
	Vaidyanathan Srinivasan <svaidy@...ux.vnet.ibm.com>,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Linus Torvalds <torvalds@...l.org>,
	Andrew Morton <akpm@...l.org>,
	"linux-os (Dick Johnson)" <linux-os@...logic.com>,
	Robin Getz <rgetz@...ckfin.uclinux.org>,
	"Hennerich, Michael" <Michael.Hennerich@...log.com>
Subject: Re: [RPC][PATCH 2.6.20-rc5] limit total vfs page cache

On Sat, 20 Jan 2007, Nick Piggin wrote:

> > It doesn't reduce the amount of memory available to the system. It
> > just reduce the amount of memory available to the page cache. So that
> > page cache is limited and the reserved memory can be allocated by the
> > application.
> 
> But the patch doesn't do that, as I explained.

The patch could do it if he would be checking NR_FILE_PAGES against 
a limit instead of the free pages.

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