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Date: Wed, 3 Mar 2010 19:57:16 +0000
From: Al Viro <viro@ZenIV.linux.org.uk>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: linux-kernel@vger.kernel.org, "H. Peter Anvin" <hpa@zytor.com>,
       Kay Sievers <kay.sievers@vrfy.org>, Greg Kroah-Hartman <gregkh@suse.de>,
       Alan Cox <alan@lxorguk.ukuu.org.uk>
Subject: Re: [RFC][PATCH] init: Open /dev/console from rootfs
Message-ID: <20100303195716.GT30031@ZenIV.linux.org.uk>
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On Tue, Mar 02, 2010 at 11:53:19PM -0800, Eric W. Biederman wrote:
> 
> To avoid potential problems with an empty /dev open /dev/console
> from rootfs instead of waiting to mount our root filesystem and
> mounting it there.   This effectively guarantees that there will
> be a device node, and it won't be on a filesystem that we will
> ever unmount, so there are no issues with leaving /dev/console
> open and pinning the filesystem.
> 
> This is actually more effective than automatically mounting
> devtmpfs on /dev because it removes removes the occasionally
> problematic assumption that /dev/console exists from the boot
> code.

Hell, yeah.  Applied, with thanks.