Does jffs support sequential programming of NAND flash?

Hi,all:
We are building a filesystem on large-block nand flash K9K4G08U0M.

It has a program limitation that the program addressing should be done in sequential order in a block, i.e. random page address programming is prohibited.

We are new to jffs, so I wanna know if yaffs support such kind of NAND device.

best wishes, shizheng