[Yaffs] YAFFS2 mounting : not inherits ownerships/permission…

Dear,

Using Linux 2.6.21 on AT91RM9260 ARM machine with YAFFS2 support: when
mounting, permissions & ownerships are not transfered ?

# ls -la /etc | grep config
drwxr-xr-x    1 root     other        2048 Sep 24 11:59 config
# mount -t yaffs2 /dev/mtdblock3 /etc/config
yaffs: dev is 32505859 name is "mtdblock3"
yaffs: passed flags ""
yaffs: Attempting MTD mount on 31.3, "mtdblock3"
yaffs: restored from checkpoint
# ls -la /etc | grep config
drw-rw-rw-    1 root     root         2048 Sep 24 12:57 config

Am I missed something ?