[Yaffs] Problem when not all partitions are mounted at start…

Hi all,

I found a problem, that pops up when not all partitions of
a volume are mounted at startup.
I'm using Yaffs2 with the direct interface.

I have a small partition "/sys", which contains a single file "test.txt"
and a large partition "/flash", which containts a single file "log.txt"

A) if I do the following things, all behaves as expected:

- mount "/sys"
- mount "/flash"
- opendir on "/sys"
- readdir until no more files are found, I get this directory listing

Directory of /sys:
'text.txt'
'lost+found'

- opendir on "/flash"
- readdir until no more files are found, I get this directory listing

Directory of /flash:
'log.txt'
'lost+found'

B) but if I do these things below, I get odd results

- mount "/sys"
- opendir on "/sys"
- readdir until no more files are found, I get this directory listing

Directory of /sys:
'text.txt'
'log.txt'
'lost+found'

- mount "/flash"
- opendir on "/flash"
- readdir until no more files are found, I get this directory listing

Directory of /flash:
'log.txt'
'test.txt'
'lost+found'

In other words, I see the file "log.txt" from partition "/flash" also in
partition "/sys" and vice versa with the file "test.txt".

I even get no error if I unlink the (actually non-existing) file
"/flash/test.txt".

Is there anything I can do about that (other than mounting all
partitions right at startup)? I want to mount the large partition later,
because after a power-failure (which is very common in our
environment) mounting takes 10 seconds, which is too long.

If there's no other solution: Is it possible to create two instances
of Yaffs (we would take care about making the NAND-interface
thread safe on our own), or does Yaffs use any globals, which would
make this impossible?

Thanks for any help!
Regards,
Gerhard