If the file preallocated blocks and fsync'ed, we should not truncate them during
roll-forward recovery which will recover i_size correctly back.
Fixes: d4dd19ec1e ("f2fs: do not expose unwritten blocks to user by DIO")
Cc: <[email protected]> # 5.17+
Signed-off-by: Jaegeuk Kim <[email protected]>