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

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Date:	Thu, 26 Mar 2009 18:48:38 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Matthew Garrett <mjg@...hat.com>
Cc:	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 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

There is an expected behaviour pattern that is standards compliant and
suddenly breaking that on people when they upgrade could cause serious
problems in some server environments.

What you propose is basically a bogus ABI change. Fix it in user space
(in fact all the distros *are* so this patch is silly and pointless)
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