linux-kernel - Re: [PATCH 02/13] writeback: avoid unnecessary calculation of bdi dirty thresholds

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Message-ID: <1281089650.1947.404.camel@laptop>
Date:	Fri, 06 Aug 2010 12:14:10 +0200
From:	Peter Zijlstra <peterz@...radead.org>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Chinner <david@...morbit.com>,
	Christoph Hellwig <hch@...radead.org>,
	Mel Gorman <mel@....ul.ie>,
	Chris Mason <chris.mason@...cle.com>,
	Jens Axboe <axboe@...nel.dk>, Jan Kara <jack@...e.cz>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>
Subject: Re: [PATCH 02/13] writeback: avoid unnecessary calculation of bdi
 dirty thresholds

On Fri, 2010-08-06 at 00:10 +0800, Wu Fengguang wrote:
> plain text document attachment (writeback-less-bdi-calc.patch)
> Split get_dirty_limits() into global_dirty_limits()+bdi_dirty_limit(),
> so that the latter can be avoided when under global dirty background
> threshold (which is the normal state for most systems).
> 
Acked-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Signed-off-by: Wu Fengguang <fengguang.wu@...el.com>
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