linux-kernel - Re: [PATCH][retry-2] init: Introduce rootdir bootparm to select which dir to sys

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Message-ID: <4740D28E.7080800@zytor.com>
Date:	Sun, 18 Nov 2007 16:02:22 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Bodo Eggert <7eggert@....de>
CC:	Al Boldi <a1426z@...ab.com>, linux-kernel@...r.kernel.org,
	akpm@...ux-foundation.org
Subject: Re: [PATCH][retry-2] init: Introduce rootdir bootparm to select which
 dir to sys_chroot

Bodo Eggert wrote:
> On Sun, 18 Nov 2007, H. Peter Anvin wrote:
>> Bodo Eggert wrote:
> 
>>> 1) This is useful for booting a rescue or test system, too. In those cases,
>>>    you might want to have the old root moved somewhere.
>>>    (Always "$rootdir/oldroot"? Additional parameter? I'm not sure ...)
>>>
>> Again, this is a good example of why this really shouldn't be additional 
>> hacks in kernel space.
> 
> ACK, but until kinit is default (and Godot arrives), this little hack does 
> seem to be useful.

I disagree, on two accounts:

a. For as long as we keep throwing more crap into the kernel, kinit will 
not get merged, because it "provides no new functionality."

b. You don't need kinit and kernel-tree integeration to do this in an 
external initramfs.  You can do this with any number of codebases as an 
external initramfs.

	-hpa
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