linux-kernel - Re: [PATCH 06/17] writeback: sync expired inodes first in background writeback

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Date:	Mon, 09 May 2011 12:18:19 -0400
From:	Rik van Riel <riel@...hat.com>
To:	Jan Kara <jack@...e.cz>
CC:	Wu Fengguang <fengguang.wu@...el.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Dave Chinner <david@...morbit.com>, Mel Gorman <mel@....ul.ie>,
	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel@...r.kernel.org
Subject: Re: [PATCH 06/17] writeback: sync expired inodes first in background
 writeback

On 05/09/2011 12:08 PM, Jan Kara wrote:

>    The age of pages in LRU is not necessarily related with the
> i_dirtied_when time stamp so I'm not sure how much this will help after all

Not necessarily, but given that the inactive file list is a
FIFO list, I expect there will be decent correlation.

> but it makes some sense from the data integrity point of view at least. You
> can add:
> Acked-by: Jan Kara<jack@...e.cz>

Good point on the data integrity.

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