linux-kernel - Re: [PATCH] init: fix name of root device in /proc/mounts

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Message-ID: <20130320002017.GA2810@linux1>
Date:	Tue, 19 Mar 2013 19:20:17 -0500
From:	William Hubbs <w.d.hubbs@...il.com>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	linux-kernel@...r.kernel.org, rob@...dley.net, mpagano@...too.org,
	ryao@...too.org, gregkh@...too.org, torvalds@...ux-foundation.org
Subject: Re: [PATCH] init: fix name of root device in /proc/mounts

On Tue, Mar 19, 2013 at 04:17:11PM -0700, H. Peter Anvin wrote:
> On 03/19/2013 03:28 PM, William Hubbs wrote:
> > The issue is that /dev/root appears in /proc/mounts if you do not
> > boot with an initramfs, but /dev/root is not a device node. In the
> > past, udev created a symbolic link from /dev/root to the
> > appropriate block device, but it does not do this any longer. Also,
> > devtmpfs does not create this symbolic link.
> > 
> > This is causing bugs with software that depends on the existence
> > of /dev/root [2] for example.
> 
> Seems okay to me, although even better would be to use the udev name
> of the device in question.

I'm not following what you mean.

The problem is that "/dev/root" should not be in /proc/mounts,
since there is always another entry that points to the root
file system.

William


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