[Yaffs] more tragedy than ancient greece

Hi,

I have been using 2.6.29 patched to yaffs2 and it works fine.

I am now trying to move to 2.6.32.11 , all is well except yaffs.

Booting via nfs I have one fs image for *29 and another for *32

Booting to *29 I can mount /dev/mntblock1 , it is clean and df shows
correct values.

# mount -t yaffs /dev/mtdblock1 /mnt/tmp
yaffs: dev is 32505857 name is "mtdblock1"
yaffs: passed flags ""
yaffs: Attempting MTD mount on 31.1, "mtdblock1"
yaffs: auto selecting yaffs2
Partially written block 513 detected
Partially written block 513 detected
Partially written block 513 detected
...
/dev/mtdblock1 on /mnt/tmp type yaffs (rw)
# df -h
Filesystem                Size      Used Available Use% Mounted on
/dev/root                 4.1G      3.6G    319.6M  92% /
tmpfs                    64.0K         0     64.0K   0% /dev
/dev/mtdblock1          125.0M     34.2M     90.8M  27% /mnt/tmp

Booting from *32 when I try to mount /dev/mtdblock1 I get a shitload of
tragedy.

# mount -t yaffs2 /dev/mtdblock1 /tmp/mnt
...
**>> Block 972 needs retiring
**>> Block 973 needs retiring
**>> Block 974 needs retiring
**>> Block 975 needs retiring
**>> Block 976 needs retiring
**>> Block 977 needs retiring
**>> Block 978 needs retiring
**>> Block 979 needs retiring
**>> Block 980 needs retiring
**>> Block 981 needs retiring
**>> Block 982 needs retiring
**>> Block 983 needs retiring
**>> Block 984 needs retiring
**>> Block 985 needs retiring
**>> Block 986 needs retiring
**>> Block 987 needs retiring
!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!
yaffs tragedy: no more erased blocks
!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!
yaffs tragedy: no more erased blocks
!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!
yaffs_read_super: isCheckpointed 0
...

I've checked the two .config files have the same yaffs options


This is rather reminiscent of the case where I moved from 2.4 to 2.6
where I had similar types of problems and had to erase_all and install a
new fs. Since the older kernel was years old and it was a major update I
deemed this was acceptable and cleared the whole fs. Now it seems less
normal.

Is this something I am doing wrong or is there no attempt to keep yaffs2
stable across kernel versions, even minor updates?

TIA.