tree 89d6939380237644aff0e3863aa750dd40e96c5c
parent 0f7742c05da1ae0162e59b37a64266ef4e6514d8
author Jaegeuk Kim <jaegeuk@kernel.org> 1449120801 -0800
committer Steve Kondik <steve@cyngn.com> 1472064209 -0700

mkfs.f2fs: discard obsolete blocks to avoid roll-forward recovery

If there are many obsolete blocks written by previous usage, we can recover
wrong blocks with them.
So, mkfs should discard whole wrong information correctly by removing possible
same checkpoint versions.

Change-Id: Ic7a4d88e985e93056a225a586396a75f8dee2a69
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>