We should check valid_map_mir and block count to ensure
the flushed raw_sit is correct.
Signed-off-by: NZhikang Zhang <zhangzhikang1@huawei.com>
Signed-off-by: NYunlei He <heyunlei@huawei.com>
Reviewed-by: NChao Yu <yuchao0@huawei.com>
Signed-off-by: NJaegeuk Kim <jaegeuk@kernel.org>