Hi Charles: 于 2014/2/8 4:40, Charles Manning 写道: > Yaffs says "store these bytes, I don't care where, just give them back to me > when I ask". > > The Yaffs2 interface also asks the driver to determine whether a block is bad, > or has ECC issues, etc. Thus it is the driver's job to determine how these > are marked or achieved. > > If this is difficult to achieve (eg. too hard to modify the drivers or too > little unused space), then you can use inband tags. These store the tags in > the data area so Yaffs does not use the OOB area and the driver can use it > all. Very good explanation, thank you Regards, Chen Xueqin