[Yaffs] yaffs robustness against power failures

Hi folks,

I'm interested in $Subject very much. Given that the answer here
(http://www.aleph1.co.uk/pipermail/yaffs/2005q1/000924.html) is
absolutely right, how would yaffs handle the situation when the file
being written exceeds the remaining available partition size?

Thanks,
Vitaly