z_erofs_map_blocks_iter
int z_erofs_map_blocks_iter(struct inode *inode, struct erofs_map_blocks *map,
err = z_erofs_map_blocks_iter(inode, map, 0);
err = z_erofs_map_blocks_iter(inode, map,
ret = z_erofs_map_blocks_iter(inode, &map, EROFS_GET_BLOCKS_FIEMAP);