Firstly. The fsstnd does not say /dev has to reamin on the root fs. Its also
not really an issue for a ROM based Linux - you tend to unpack a compressed
image from expensive slow flash into cheap ramdisk
> With devfs, the kernel can chown ptys back to root when a process
> does not need them anymore. The kernel might be able to let normal
> users chown their own pty or it might perform the chown automatically.
This solvable in user space by having a single pty allocation daemon. The
tty/pty issue is irrelevant the wisdom or otherwise of a devfs.
Alan