linux-kernel - Re: [PATCH 2/2] Make relatime default

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Date:	Mon, 30 Mar 2009 16:52:33 +0200
From:	Xavier Bestel <xavier.bestel@...e.fr>
To:	Andrea Arcangeli <aarcange@...hat.com>
Cc:	Alan Cox <alan@...rguk.ukuu.org.uk>,
	Matthew Garrett <mjg@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Theodore Tso <tytso@....edu>, Ingo Molnar <mingo@...e.hu>,
	Jan Kara <jack@...e.cz>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Arjan van de Ven <arjan@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Nick Piggin <npiggin@...e.de>,
	Jens Axboe <jens.axboe@...cle.com>,
	David Rees <drees76@...il.com>, Jesper Krogh <jesper@...gh.cc>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Roland McGrath <roland@...hat.com>
Subject: Re: [PATCH 2/2] Make relatime default

On Mon, 2009-03-30 at 16:42 +0200, Andrea Arcangeli wrote:
> On Thu, Mar 26, 2009 at 06:48:38PM +0000, Alan Cox wrote:
> > On Thu, 26 Mar 2009 17:53:14 +0000
> > Matthew Garrett <mjg@...hat.com> wrote:
> > 
> > > Change the default behaviour of the kernel to use relatime for all
> > > filesystems. This can be overridden with the "strictatime" mount
> > > option.
> > 
> > NAK this again
> 
> NAK but because if we change the default it is better to change it to
> the real thing: noatime.
> 
> I think this can be solved in userland but perhaps changing this in
> kernel would be a stronger message that atime is officially
> obsoleted. (and nothing will break, not even mutt users will notice,
> and if they really do it won't be anything more than aesthetical)

Actually I liked the previous relatime (without the 24h hack) pretty
much. It would have preserved the atime functionality without making
something like slocate dirty huge parts of the fs daily.

I vote for relatime-without-24h-hack !

	Xav


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