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From: Denis Vlasenko <vda.linux@googlemail.com>
To: Bodo Eggert <7eggert@gmx.de>
Subject: Re: [PATCH][RFC] 4K stacks default, not a debug thing any more...?
Date: Thu, 19 Jul 2007 20:34:35 +0100
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Cc: Jesper Juhl <jesper.juhl@gmail.com>, Ray Lee <ray-lk@madrabbit.org>,
       Rene Herman <rene.herman@gmail.com>, Matt Mackall <mpm@selenic.com>,
       Jeremy Fitzhardinge <jeremy@goop.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       William Lee Irwin III <wli@holomorphy.com>, David Chinner <dgc@sgi.com>,
       Arjan van de Ven <arjan@infradead.org>
References: <8FO1e-2jW-35@gated-at.bofh.it> <9a8748490707161554j1fa7625fq1f1cb7e6aa359715@mail.gmail.com> <Pine.LNX.4.58.0707170134390.29868@be1.lrz>
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On Tuesday 17 July 2007 00:42, Bodo Eggert wrote:
> > Please note that I was not trying to remove the 8K stack option right
> > now - heck, I didn't even add anything to feature-removal-schedule.txt
> > - all I wanted to accomplish with the patch that started this threas
> > was;  a) indicate that the 4K option is no longer a debug thing  and
> 
> Very ACK.
> 
> > b) make 4K stacks the default option in vanilla kernel.org kernels as
> > a gentle nudge towards getting people to start fixing the code paths
> > that are not 4K stack safe.
> 
> That's the big NACK. It's OK for MM, where things are supposed to be in a 
> not well-tested state, but for running possibly mission-critical systems,
> you should take no risk.

Mission-critical machines are not supposed to have kernel configured
with incompetent/careless sysadmin who didn't think about
config choices he made at kernel build time.
--
vda