linux-kernel - Re: [RFC][Patch] Allow not mounting a root fs

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Message-Id: <200707081336.27985.a1426z@gawab.com>
Date:	Sun, 8 Jul 2007 13:36:27 +0300
From:	Al Boldi <a1426z@...ab.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: [RFC][Patch] Allow not mounting a root fs

Bodo Eggert wrote:
> On Sat, 7 Jul 2007, Jan Engelhardt wrote:
> > On Jul 5 2007 19:08, H. Peter Anvin wrote:
> > >> BTW: Is it possible to mount a tmpfs on / before extracting the cpio?
> > >
> > >Not in the stock kernel.  There have been some patches floating around
> > >for that, I think.
> > 
> > What would it buy? rootfs is a tmpfs, is not it?
> 
> As far as I understand, it is a ramfs aka. non-swappable tmpfs without any 
> limit and including a chance of DoSing the system.
> 
> Since I'm toying with root-on-initcpio, I'm looking for things that might 
> make the task some easier.
> 
> Currently I'm thinking about changing the root=initramfs to root=tmpfs and
> additionally mounting a tmpfs on / before unpacking the cpios. OTOH, this 
> seems to be a little bit messy. OTOH again, in _that_ boot code, nobody
> should complain :)

Try this "[PATCH] initramfs: Allow rootfs to use tmpfs instead of ramfs".

It's trivial and should be in mainline.


Thanks!

--
Al


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