NAND Write fails

[ahgu]

 There is problem with the recover function in the latest CVS 2 days ago.
 Instead of using the breakme in the wbuf.c
 I put something like this in the nand.c, the lowest write function.

 after write, in the verification:
 if(data dont match || block==###)
 return error.


 I got the driver to crash in case like this. Has anyone seen this 
condition?

 Also, is there a design document for the wbuf.c? I have trouble
 understanding the jffs2_flash_writev function.

 thanks
 Andrew