linux-kernel - Re: [patch] implement smarter atime updates support, v2

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Message-ID: <20070806053617.GB14881@elte.hu>
Date:	Mon, 6 Aug 2007 07:36:17 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Theodore Tso <tytso@....edu>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jakob Oestergaard <jakob@...hought.net>,
	Jeff Garzik <jeff@...zik.org>, miklos@...redi.hu,
	akpm@...ux-foundation.org, neilb@...e.de, dgc@....com,
	tomoki.sekiyama.qu@...achi.com,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>, linux-mm@...ck.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	nikita@...sterfs.com, trond.myklebust@....uio.no,
	yingchao.zhou@...il.com, richard@....demon.co.uk, david@...g.hm
Subject: Re: [patch] implement smarter atime updates support, v2


* Theodore Tso <tytso@....edu> wrote:

> On Sun, Aug 05, 2007 at 09:28:38PM +0200, Ingo Molnar wrote:
> > 
> > added the relatime_interval sysctl that allows the changing of the 
> > atime update frequency. (default: 1 day / 86400 seconds)
> 
> What if you specify the interval as a per-mount option?  i.e.,
> 
> 	mount -o relatime=86400 /dev/sda2 /u1
> 
> If you had this, I don't think we would need the sysctl tuning 
> parameter.

it's much more flexible if there are _more_ options available. People 
can thus make use of the feature earlier, use it even on distros that 
dont support it yet, etc.

	Ingo
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