/* file.c */
extern struct inode_operations bfs_file_inops;
-extern struct file_operations bfs_file_operations;
-extern struct address_space_operations bfs_aops;
+extern const struct file_operations bfs_file_operations;
+extern const struct address_space_operations bfs_aops;
/* dir.c */
extern struct inode_operations bfs_dir_inops;
-extern struct file_operations bfs_dir_operations;
+extern const struct file_operations bfs_dir_operations;
#endif /* _FS_BFS_BFS_H */