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Subject: Re: [patch][rfc][rft] vm throughput 2.4.2-ac4
To: mikeg@wen-online.de (Mike Galbraith)
Date: Thu, 1 Mar 2001 22:28:03 +0000 (GMT)
Cc: riel@conectiva.com.br (Rik van Riel),
        marcelo@conectiva.com.br (Marcelo Tosatti),
        linux-kernel@vger.kernel.org (linux-kernel),
        alan@lxorguk.ukuu.org.uk (Alan Cox)
In-Reply-To: <Pine.LNX.4.33.0103012021470.1542-100000@mikeg.weiden.de> from "Mike Galbraith" at Mar 01, 2001 09:33:59 PM
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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
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> There is no mechanysm in place that ensures that dirty pages can't
> get out of control, and they do in fact get out of control, and it
> is exaserbated (mho) by attempting to define 'too much I/O' without
> any information to base this definition upon.

I think this is a good point. If you do 'too much I/O' then the I/O gets
throttled by submit_bh(). The block I/O layer knows about 'too much I/O'.

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