linux-kernel - Re: [patch] block: fix blktrace timestamps

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Message-ID: <20080114075922.GA17686@elte.hu>
Date:	Mon, 14 Jan 2008 08:59:22 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Jens Axboe <jens.axboe@...cle.com>
Cc:	David Dillow <dillowda@...l.gov>,
	Guillaume Chazarain <guichaz@...oo.fr>,
	linux-kernel@...r.kernel.org, linux-btrace@...r.kernel.org,
	mingo@...hat.com, tglx@...utronix.de,
	Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [patch] block: fix blktrace timestamps

* Ingo Molnar <mingo@...e.hu> wrote:

> because a perfectly working system is:
> 
>  "a user's .config that worked before should work with the new kernel
>   too"
> 
> not:
> 
>  "a user's .config that worked before should work now too, with random
>   new kernel features enabled as well."
> 
> the latter appears to be the rule you are applying, but it's not the 
> regression rule we are using.

Jens, just to bring your definition of regressions to its logical 
conclusion: does this mean that if there is any longstanding bug in the 
block layer that you know about, but i didnt ever utilize that bit of 
the block layer it in my .config, and if i enable it now in the .config 
and i experience that bug, does it suddenly count as a regression? Do 
you realize that your definition for "regressions" turns _almost every_ 
current bug in the kernel into a regression?

	Ingo
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