linux-kernel - Re: Bootup time regression from 2.6.27 to 2.6.28-rc3+

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Message-ID: <alpine.LFD.2.00.0811091237110.3468@nehalem.linux-foundation.org>
Date:	Sun, 9 Nov 2008 12:39:50 -0800 (PST)
From:	Linus Torvalds <torvalds@...ux-foundation.org>
To:	Arjan van de Ven <arjan@...radead.org>
cc:	Lukas Hejtmanek <xhejtman@....muni.cz>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Marcin Slusarz <marcin.slusarz@...il.com>,
	linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>
Subject: Re: Bootup time regression from 2.6.27 to 2.6.28-rc3+

On Sun, 9 Nov 2008, Arjan van de Ven wrote:
> 
> for me, the plan is that we need to get Thomas' fixes tested by someone
> who can reproduce this very reliably. If they fix it, great.
> If they don't, time is running out and we need to remove the feature
> for 2.6.28 (that is 1 line of change), realizing that this just papers
> over stuff and isn't a real fix, and get back to it for 2.6.29.

I'd like to see the one-liner fix, even if it turns out to just be a 
workaround that hides the issue and makes us go back to 2.6.27 behaviour. 
I'm about to release -rc4 today, we should be aggressive about 
regressions.

If somebody can test the "real fix" independently, that's obviously fine, 
but it's not an excuse for keeping a pending regression. If people end up 
being 100% sure they found the bug later, we can then re-enable it, but 
again - that has zero bearing on the fact that we should get rid of the 
regression asap.

			Linus
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