On Mon, 8 May 2017 13:48:07 +0200 Boris Brezillon <boris.brezillon@xxxxxxxxxxxxxxxxxx> wrote: > On Mon, 8 May 2017 13:06:17 +0200 > Richard Weinberger <richard.weinberger@xxxxxxxxx> wrote: > > > On Mon, May 8, 2017 at 12:49 PM, Pavel Machek <pavel@xxxxxx> wrote: > > > Aha, nice, so it looks like ubifs is a step back here. > > > > > > 'clean marker' is a good idea... empty pages have plenty of space. > > > > If UBI (not UBIFS) faces an empty block, it also re-erases it. > > Unfortunately, that's not the case, though UBI can easily be patched > to do that (see below). Sorry for the noise, I was wrong, UBI already re-erases empty blocks [1]. [1]http://elixir.free-electrons.com/linux/latest/source/drivers/mtd/ubi/attach.c#L983