F2FS_GET_BLOCK_DEFAULT
err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
ret = f2fs_map_blocks(inode, map, F2FS_GET_BLOCK_DEFAULT);
ret = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
flag = F2FS_GET_BLOCK_DEFAULT;
err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);
err = f2fs_map_blocks(inode, &map, F2FS_GET_BLOCK_DEFAULT);