Why does udev use ramfs?

[Harald Hoyer]

James Morris wrote:
> Greg asked some questions about our use of udev per below.
> 
> Can anyone provide some insight?
> 
> ---------- Forwarded message ----------
> Date: Mon, 23 Aug 2004 13:59:43 -0700
> From: Greg KH <greg at kroah.com>
> To: Stephen Smalley <sds at epoch.ncsc.mil>
> Cc: Christoph Hellwig <hch at infradead.org>, James Morris <jmorris at redhat.com>,
>      Andrew Morton <akpm at osdl.org>,
>      Alexander Viro <viro at parcelfarce.linux.theplanet.co.uk>,
>      lkml <linux-kernel at vger.kernel.org>
> Subject: Re: [PATCH][7/7] add xattr support to ramfs
> 
> On Mon, Aug 23, 2004 at 04:26:29PM -0400, Stephen Smalley wrote:
> 
>>On Mon, 2004-08-23 at 16:26, Christoph Hellwig wrote:
>>
>>>On Mon, Aug 23, 2004 at 02:22:20PM -0400, James Morris wrote:
>>>
>>>>This patch adds xattr support to tmpfs, and a security xattr handler.
>>>>Original patch from: Chris PeBenito <pebenito at gentoo.org>
>>>
>>>What's the point on doing this for ramfs?  And if you really want this
>>>the implementation could be shared with tmpfs easily and put into xattr.c
>>
>>For udev.
> 
> 
> What's wrong with using a tmpfs for udev in such situations that xattrs
> are needed?  udev does not require ramfs at all.  In fact, why not just
> use a ext2 or ext3 partition for /dev instead today, if you really need
> it?
> 
> thanks,
> 
> greg k-h
> 

We could also use tmpfs, if that's better wrt. to xattr. No problem.