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

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Date:	Fri, 27 Mar 2009 14:06:40 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Frans Pop <elendil@...net.nl>, mjg@...hat.com, tytso@....edu,
	mingo@...e.hu, jack@...e.cz, akpm@...ux-foundation.org,
	arjan@...radead.org, a.p.zijlstra@...llo.nl, npiggin@...e.de,
	jens.axboe@...cle.com, drees76@...il.com, jesper@...gh.cc,
	linux-kernel@...r.kernel.org, oleg@...hat.com, roland@...hat.com
Subject: Re: [PATCH 2/2] Make relatime default

> Why? RELATIME has been around since 2006 now.

The workable fixes to relatime (the always update once per 24 hours) you
only just comitted - and did come from a vendor.

It also looks btw that we don't want to have a "relatime" option and a
"strictatime" option and a "relatimebutdoitevery24hrs" option.

All three of these are the same thing so it should (regardless of default
choice) be 

	relatime=n

	n = 0 ('update if its more than 0 seconds out of date') =
	strictatime
	n = MAXINT (basically equals relatime)
	n = 24hrs (the new 'fixed' relatime but not too relative)

	n = anything else - user tuned

Alan
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