linux-kernel - Re: [PATCH 3/5] writeback: dirty rate control

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Message-ID: <1312909016.1083.47.camel@twins>
Date:	Tue, 09 Aug 2011 18:56:56 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	linux-fsdevel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Jan Kara <jack@...e.cz>, Christoph Hellwig <hch@....de>,
	Dave Chinner <david@...morbit.com>,
	Greg Thelen <gthelen@...gle.com>,
	Minchan Kim <minchan.kim@...il.com>,
	Vivek Goyal <vgoyal@...hat.com>,
	Andrea Righi <arighi@...eler.com>,
	linux-mm <linux-mm@...ck.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 3/5] writeback: dirty rate control

On Sat, 2011-08-06 at 16:44 +0800, Wu Fengguang wrote:
>              bdi->dirty_ratelimit = (bw * 3 + ref_bw) / 4;

I can't actually find this low-pass filter in the code.. could be I'm
blind from staring at it too long though..
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