2.5.7{,-rmk1}: jffs2 on root patch

[Christopher Hoover]

I discovered that with vanilla 2.5.7, the kernel will indeed mount a
jffs root, if you do:

  root=/dev/mtdblockX rootfstype=jffs2

[ 

as opposed to simply:

  root=/dev/mtdblockX 

which work just fined prior to 2.5.7

]

The "rootfstype=jffs2" part is *mandatory*, because
do_mounts.c:get_fs_names(), which computes which filesystems should be
attempted for the root partitition, skips any filesystem, such as jffs2,
that is "nodev."

-ch


> -----Original Message-----
> From: linux-mtd-admin at lists.infradead.org 
> [mailto:linux-mtd-admin at lists.infradead.org] On Behalf Of 
> David Woodhouse
> Sent: Tuesday, April 02, 2002 5:29 PM
> To: Christopher Hoover
> Cc: linux-arm-kernel at lists.arm.linux.org.uk; 
> linux-mtd at lists.infradead.org
> Subject: Re: 2.5.7{,-rmk1}: jffs2 on root patch 
> 
> 
> 
> ch at hpl.hp.com said:
> >  2.5.7-rmk1 (and apparently any 2.5.7 kernel, hence the 
> cross-posting) 
> > requires the following patch, if you wish to use a jffs2 
> file system 
> > as your root.  Without the patch, mount_block_root() won't 
> attempt to 
> > use jffs2.
> 
> I don't like it. We don't require a block device, and I'd 
> rather see the mechanism fixed to pass the 'root=' argument 
> to the file system, so we can use the new mount-by-name 
> functionality on the rootfs.
> 
> --
> dwmw2
> 
> 
> 
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