what cause :**>> yaffs chunk 38598 was not erased

[liu.yaojin at zte.com.cn]

hi guys:
 
i use lastest yaffs filesystem,kernel is 2.6.24.
my nand flash controller is a little slow.and when i copy(or ls) 
files(more than 1MB?),the console appears:

**>> yaffs chunk 38598 was not erased
**>> yaffs write required 2 attempts
page 38598 in gc has no object: 0 0 0

and etc...
so why this happens continually ?



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