linux-kernel - Re: [patch 2/4] Configure out file locking features

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Message-ID: <20080731193126.GB23516@cs181140183.pp.htv.fi>
Date:	Thu, 31 Jul 2008 22:31:26 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Robert Schwebel <r.schwebel@...gutronix.de>
Cc:	Tim Bird <tim.bird@...sony.com>,
	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	linux-kernel@...r.kernel.org, linux-embedded@...r.kernel.org,
	michael@...e-electrons.com, Matt Mackall <mpm@...enic.com>,
	matthew@....cx, linux-fsdevel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [patch 2/4] Configure out file locking features

On Thu, Jul 31, 2008 at 08:12:14PM +0200, Robert Schwebel wrote:
> On Thu, Jul 31, 2008 at 10:32:20AM -0700, Tim Bird wrote:
> > > And for embedded systems with which applications is it 100% safe to
> > > disable this option?
> >
> > Sony's digital cameras.
> 
> We have also several very small automation & measurement devices in the
> field which run a very dedicated more or less single application which
> can be carefully audited.
> 
> In the OSADL safety working group, people are discussing about Linux for
> safety critical applications. If we want to achieve such scenarios,
> stripped-down systems are an absolute must.
>...

My first reaction is that as soon as you enable CONFIG_EMBEDDED you can 
easily enter codepaths noone else has used for a while and that got 
unnoticed broken.

> rsc

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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