-static int rdump_dirent(struct ext2_dir_entry *dirent, int offset,
- int blocksize, char *buf, void *private)
+static int rdump_dirent(struct ext2_dir_entry *dirent,
+ int offset EXT2FS_ATTR((unused)),
+ int blocksize EXT2FS_ATTR((unused)),
+ char *buf EXT2FS_ATTR((unused)), void *private)