From: Al Viro <viro@ftp.linux.org.uk>
To: Jan Engelhardt <jengelh@computergmbh.de>
Cc: Mark Cannon <random.bits@rogers.com>,
"H. Peter Anvin" <hpa@zytor.com>,
linux-kernel@vger.kernel.org
Subject: Re: Use of directories to hold root?
Date: Sun, 12 Aug 2007 21:23:20 +0100 [thread overview]
Message-ID: <20070812202320.GE21089@ftp.linux.org.uk> (raw)
In-Reply-To: <Pine.LNX.4.64.0708122147440.28963@fbirervta.pbzchgretzou.qr>
On Sun, Aug 12, 2007 at 09:49:02PM +0200, Jan Engelhardt wrote:
>
> On Aug 12 2007 15:39, Mark Cannon wrote:
> >> >> No, but you can use pivot_root.
> >> >
> >> >Or better yet, use an initramfs with MS_MOVE; same as you would with the
> >> >"normal" use of initramfs.
> >
> >I am not sure I understand initramfs with MS_MOVE concept. I will look into
> >it. Any pointers for documentation?
>
> pivot_root is atomic afaict, for `mount --move` (which I think Al meant
> which MS_MOVE - or some C program using mount(2) of your own), you'd
> need multiple calls to mount.
Move itself is done by a single syscall anyway...
next prev parent reply other threads:[~2007-08-12 20:23 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-10 21:24 Use of directories to hold root? Mark Cannon
2007-08-10 21:33 ` Jan Engelhardt
2007-08-11 0:08 ` H. Peter Anvin
2007-08-11 15:55 ` Jan Engelhardt
2007-08-11 16:07 ` Al Viro
2007-08-12 19:39 ` Mark Cannon
2007-08-12 19:49 ` Jan Engelhardt
2007-08-12 20:23 ` Al Viro [this message]
2007-08-12 20:55 ` Jan Engelhardt
2007-08-12 20:57 ` H. Peter Anvin
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