linux-kernel - Re: [PATCH] Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev

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Date:	Wed, 12 Aug 2009 16:14:21 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Arjan van de Ven <arjan@...radead.org>
Cc:	Andi Kleen <andi@...stfloor.org>,
	David Dillow <dave@...dillows.org>, Greg KH <greg@...ah.com>,
	Greg KH <gregkh@...e.de>, Alan Cox <alan@...rguk.ukuu.org.uk>,
	linux-kernel@...r.kernel.org, Kay Sievers <kay.sievers@...y.org>,
	Jan Blunck <jblunck@...e.de>, Harald Hoyer <harald@...hat.com>,
	Scott James Remnant <scott@...ntu.com>
Subject: Re: [PATCH] Driver Core: devtmpfs - kernel-maintained tmpfs-based
	/dev

On Wed, Aug 12, 2009 at 07:07:59AM -0700, Arjan van de Ven wrote:
> On Wed, 12 Aug 2009 09:31:52 +0200
> Andi Kleen <andi@...stfloor.org> wrote:
> 
> > > So use Eric/Arjan's program that does it in 60ms -- you get a
> > > dynamic /dev, no initrd, fast boot, and no kernel changes required.
> > 
> > That would likely need initrd at least on the distro I use which uses
> > device files very early.
> 
> nah just need to call it early in /etc/rc.sysinit.
> 
> initrd is a read herring; distros don't need an initrd
> (well except fedora who ship borken with a /dev without
> even /dev/console)

SUSE has the same problem. If the on disk /dev is empty
and it typically is out of the box then and there's no
initrd you don't boot.

-Andi

-- 
ak@...ux.intel.com -- Speaking for myself only.
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