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

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Message-Id: <20081129123220.67fd1e6a.akpm@linux-foundation.org>
Date:	Sat, 29 Nov 2008 12:32:20 -0800
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	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 19:02:45 +0000 Matthew Garrett <mjg@...hat.com> wrote:

> On Sat, Nov 29, 2008 at 06:56:45PM +0000, Jamie Lokier wrote:
> 
> > I don't see why there is an objection to per-mountpoint.
> > Andrew Morton's syntax: mount /dev/foo /mnt/bar -o relatime=86400
> > looks natural to me.
> 
> If somebody feels that this functionality would be useful, they're 
> welcome to write it.

If someone writes it, I'll merge it.

> A global default doesn't preclude per-mountpoint 
> settings. This patch makes the existing kernel code more useful and so 
> is worthwhile on its own, even if it doesn't scratch everyone's itch.

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?
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