linux-kernel - Re: [PATCH] raid: make RAID autodetect default a KConfig option

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Message-ID: <18648.26191.479291.883160@notabene.brown>
Date:	Tue, 23 Sep 2008 13:45:19 +1000
From:	Neil Brown <neilb@...e.de>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Arjan van de Ven <arjan@...radead.org>,
	linux-kernel@...r.kernel.org, davej@...hat.com
Subject: Re: [PATCH] raid: make RAID autodetect default a KConfig option

On Monday September 22, mingo@...e.hu wrote:
> 
> * Arjan van de Ven <arjan@...radead.org> wrote:
> 
> > From 812bf9a448d96375a3aec5c51764d74cace85abb Mon Sep 17 00:00:00 2001
> > From: Arjan van de Ven <arjan@...ux.intel.com>
> > Date: Sun, 21 Sep 2008 15:44:32 -0700
> > Subject: [PATCH] raid: make RAID autodetect default a KConfig option
> > 
> > RAID autodetect has the side effect of requiring synchronisation of 
> > all device drivers, which can make the boot several seconds longer 
> > (I've measured 7 on one of my laptops).... even for systems that don't 
> > have RAID setup for the root filesystem (the only FS where this 
> > matters).
> > 
> > This patch makes the default for autodetect a config option; either 
> > way the user can always override via the kernel command line.
> 
> Neil, if you agree with this patch, could you please send your Acked-by 
> line? This patch depends on a clean-up in init/do_mounts_md.c that is in 
> the fastboot tree so it would be logistically easier/better if we could 
> queue this up towards upstream via tip/fastboot.

Yes,
 Acked-by: NeilBrown <neilb@...e.de>

I'm not a big fan of autodetect in any case, and this patch seems to
cover all the bases I can think of.

Thanks,
NeilBrown
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