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

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Message-ID: <20081127173906.GA24126@srcf.ucam.org>
Date:	Thu, 27 Nov 2008 17:39:06 +0000
From:	Matthew Garrett <mjg@...hat.com>
To:	Pádraig Brady <P@...igBrady.com>
Cc:	Karel Zak <kzak@...hat.com>,
	Randy Dunlap <randy.dunlap@...cle.com>,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	mingo@...hat.com, val.henson@...il.com, matthew@....cx,
	util-linux-ng@...r.kernel.org
Subject: Re: [PATCH v2 2/2] relatime: Allow making relatime the default	behaviour

On Thu, Nov 27, 2008 at 05:30:45PM +0000, Pádraig Brady wrote:
> Karel Zak wrote:
> > On Thu, Nov 27, 2008 at 03:03:41PM +0000, Matthew Garrett wrote:
> >> Also add a MS_NORELATIME mount option
> > [...]
> >> +#define MS_NORELATIME	(1<<24)	/* Disable relatime even if the default */
> > 
> >  CC: util-linux-ng@...r.kernel.org
> 
> That's useful. Without this, to disable relatime you needed to:
> 
> echo 0 > /proc/sys/fs/default_relatime
> mount -o remount,atime /mnt/point/

I'm dropping that hunk - it's easier to default to relatime in 
userspace, so there's no need to have a kernel fs parameter to forcibly 
disable it.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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