Hello.

I'm trying to understand the relation between yaffs and the ram disk it 
somehow uses. I could not find anything about it in the documentation.

My new development board uses yaffs for root filesystem. It boots with 
"root=/dev/mtdblock0", however after the boot is finished it appears as 
if / is mounted on /dev/ram0, not /dev/mtdblock0. At the same time, I 
can mount /dev/mtdblock0 on another mount point and it shows the same 
file system as the one which is mounted on /dev/ram0.

What's the deal with /dev/ram0 ?