[Yaffs] yaffs and ramdisk

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Author: Sasha Sirotkin
Date:  
To: yaffs
Subject: [Yaffs] yaffs and ramdisk
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 ?