Re: [PATCH] mtd: allow mtd and jffs2 when ARCH=um

From: Rob Landley
Date: Fri Dec 17 2010 - 23:09:18 EST


On Thursday 16 December 2010 09:18:31 Artem Bityutskiy wrote:
> On Wed, 2010-12-15 at 00:31 -0600, Rob Landley wrote:
> > That is awesome and I'm not finding any documentation on it... Ah:
> >
> >
> > http://wiki.maemo.org/Modifying_the_root_image#Block_device_emulating_an_
> >MTD_device
> >
> > Wow that's awkward. Let's see, that says...
> >
> > mknod /tmp/mtdblock0 b 31 0
> > modprobe loop
> > losetup /dev/loop0 rootfs.jffs2
> > modprobe mtdblock
> > modprobe block2mtd
> > # Note the ,128KiB is needed (on 2.6.26 at least) to set the
> > # eraseblock size.
> > echo "/dev/loop0,128KiB" > /sys/module/block2mtd/parameters/block2mtd
> > modprobe jffs2
> > mount -t jffs2 /tmp/mtdblock0 /media/jffs2
>
> You should not need mtdblock in modern kernels, it is legacy. You should
> be abole to mount jffs2 on top of mtd0 with
>
> mount -t jffs2 mtd0 /media/jffs2

How does one associate the mtd0 with the loopback device? (I thought mtd0 was
for actual flash memory.)

Rob
--
GPLv3: as worthy a successor as The Phantom Menace, as timely as Duke Nukem
Forever, and as welcome as New Coke.
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