[Yaffs] YAFFS and 2.6.29 kernel

Hello,
 
I tried to compile yaffs in my kernel today, which doesnt succeded as expected. Patching from CVS went well, but when I compiled the FS, first troubles appeard: I need to update the code a little to match my Kernel (Patch attached).
 
After this changes compilation worked fine, but mounting failes:
# mount -t yaffs2 /dev/mtdblock3 /mnt/root/
mount: mounting /dev/mtdblock3 on /mnt/root/ failed: Invalid argument
 
Any idea? Did I something wrong in my patch?
 
Thanks
Stefan