extern const struct file_operations ext2_dir_operations;
/* file.c */
-extern struct inode_operations ext2_file_inode_operations;
+extern const struct inode_operations ext2_file_inode_operations;
extern const struct file_operations ext2_file_operations;
extern const struct file_operations ext2_xip_file_operations;
extern const struct address_space_operations ext2_nobh_aops;
/* namei.c */
-extern struct inode_operations ext2_dir_inode_operations;
-extern struct inode_operations ext2_special_inode_operations;
+extern const struct inode_operations ext2_dir_inode_operations;
+extern const struct inode_operations ext2_special_inode_operations;
/* symlink.c */
-extern struct inode_operations ext2_fast_symlink_inode_operations;
-extern struct inode_operations ext2_symlink_inode_operations;
+extern const struct inode_operations ext2_fast_symlink_inode_operations;
+extern const struct inode_operations ext2_symlink_inode_operations;