linux-kernel - Re: [PATCH v2 2/2] relatime: Allow making relatime the default behaviour

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Message-ID: <20081129125529.0198e973@infradead.org>
Date:	Sat, 29 Nov 2008 12:55:29 -0800
From:	Arjan van de Ven <arjan@...radead.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Matthew Garrett <mjg@...hat.com>,
	Jamie Lokier <jamie@...reable.org>,
	Jörn Engel <joern@...fs.org>,
	Matthew Wilcox <matthew@....cx>,
	Christoph Hellwig <hch@...radead.org>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	mingo@...hat.com, val.henson@...il.com
Subject: Re: [PATCH v2 2/2] relatime: Allow making relatime the default
 behaviour

On Sat, 29 Nov 2008 12:32:20 -0800
Andrew Morton <akpm@...ux-foundation.org> wrote:

> 
> The standard, usual, expected way of modifying a filesystem's
> behaviour is via mount options.  This is also quite flexible.
> 
> Is there some extraordinary reason why the standard interface is not
> to be used here?


let me ask this:
Has anmyone ever had the desire to change the default of 1 day of
relatime? Ever?
Maybe this code isn't really needed if nobody even thought about
changing it.

Clearly there are two extremes (always and never) for which we have
atime/noatime. I'm not sure we need to have any smarts in the middle
point for the user to change. If this is something people wish to see
tuned better, I would rather spend the code size in trying to get it
autotuning.

-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit http://www.lesswatts.org
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