Dose linux-mtd really support mlc nand flash?

[liulunzuo]

Hi:
  Mlc nand flash should be write only once per write operation(NOP=1),
  but i found when i use mtd-utils to write a mtdchar device with oob ,
  it write a page twice: page and oob zone wrote separately,
  and mtdchar.c support no way to write a page and oob zone to the mlc
nand flash at the same time.

  And when a writing or eraseing operation fail, yaffs2 fs will mark
the block as bad block,
  but the function "markbad" will only write oob area neither use a
bad block scan first nor not.

  it seems a real problem when i use mlc nand flash under yaffs2.

  My English is so poor, could you know what i mean?

Thanks.

Best Regards!