static int get_data_block(struct inode *inode, sector_t iblock,
			struct buffer_head *bh_result, int create, int flag,
			pgoff_t *next_pgofs)
{
	return __get_data_block(inode, iblock, bh_result, create,
							flag, next_pgofs,
							NO_CHECK_TYPE, create);
}
static int get_data_block(struct inode *inode, sector_t iblock,
			struct buffer_head *bh_result, int create, int flag,
			pgoff_t *next_pgofs)
{
	return __get_data_block(inode, iblock, bh_result, create,
							flag, next_pgofs,
							NO_CHECK_TYPE, create);
}