linux-kernel - Re: [PATCH 3/6] writeback: sync expired inodes first in background writeback

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Message-ID: <20110421063659.GH1814@dastard>
Date:	Thu, 21 Apr 2011 16:36:59 +1000
From:	Dave Chinner <david@...morbit.com>
To:	Wu Fengguang <fengguang.wu@...el.com>
Cc:	Jan Kara <jack@...e.cz>, Andrew Morton <akpm@...ux-foundation.org>,
	Mel Gorman <mel@...ux.vnet.ibm.com>,
	Mel Gorman <mel@....ul.ie>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	Itaru Kitayama <kitayama@...bb4u.ne.jp>,
	Minchan Kim <minchan.kim@...il.com>,
	LKML <linux-kernel@...r.kernel.org>,
	"linux-fsdevel@...r.kernel.org" <linux-fsdevel@...r.kernel.org>,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: [PATCH 3/6] writeback: sync expired inodes first in background
 writeback

On Thu, Apr 21, 2011 at 12:10:11PM +0800, Wu Fengguang wrote:
> > > Still, given wb_writeback() is the only caller of both
> > > __writeback_inodes_sb and writeback_inodes_wb(), I'm wondering if
> > > moving the queue_io calls up into wb_writeback() would clean up this
> > > logic somewhat. I think Jan mentioned doing something like this as
> > > well elsewhere in the thread...
> > 
> > Unfortunately they call queue_io() inside the lock..
> 
> OK, let's try moving up the lock too. Do you like this change? :)

Yes, very much ;)

Cheers,

Dave.
-- 
Dave Chinner
david@...morbit.com
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