ext4_ext_next_allocated_block
extern ext4_lblk_t ext4_ext_next_allocated_block(struct ext4_ext_path *path);
b2 = ext4_ext_next_allocated_block(path);
next = ext4_ext_next_allocated_block(path);
ext4_lblk_t next = ext4_ext_next_allocated_block(path);
*iterator = ext4_ext_next_allocated_block(path);
next1 = ext4_ext_next_allocated_block(path1);
next2 = ext4_ext_next_allocated_block(path2);
first_lblk = ext4_ext_next_allocated_block(path);