Re: root=/dev/sda1 fails but root=0x0801 works...

[Al Viro]

On Tue, Feb 14, 2006 at 10:59:50PM -0800, Andrew Morton wrote:
> Al Viro <viro@xxxxxxxxxxxxxxxx> wrote:
> >
> > Read init/do_mounts.c::name_to_dev_t().
> >
> 
> I tried to do that a while ago, when I was trying to use it for
> name_to_dev_t()ing in swsusp somewhere.
> 
> 
> >From my notes at the time:
> 
>   a) It barfs if /sys is already mounted.

It's called from late boot code.
 
>   b) Fix that, mkdir and mount barf because it needs set_fs(KERNEL_DS)

It's called from late boot code, running as kernel thread.

>   c) Fix that, it barfs because name_to_dev_t is just broken.  It is
>      accessing the wrong pathnames in /sys.

Details, please.
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