can someone please explain how to correctly write data to NAND flash using the FFS subsystem? In the mfs_nandflash demo, I can open the filesystem and read/write data from/to it, everything works fine. The only problem is that written data is not persistent unless I close the filesystem (fsclose) after the changes performed, i.e. if I simply write a file and turn off the power, the change is gone after I turn the power on again.
So, if I want to write a file, do I always have to close the filesystem to make the changes persistent? That doesn't seem to me like a good solution (by the way it also looses the point of MFS generality then). Or is this just a kind of misbehaviour on my side (maybe a wrong configuration)?