diff --git a/fs/udf/file.c b/fs/udf/file.c
index d81f2db..40d5047 100644
--- a/fs/udf/file.c
+++ b/fs/udf/file.c
@@ -263,6 +263,6 @@
 	.sendfile		= generic_file_sendfile,
 };
 
-struct inode_operations udf_file_inode_operations = {
+const struct inode_operations udf_file_inode_operations = {
 	.truncate		= udf_truncate,
 };
diff --git a/fs/udf/namei.c b/fs/udf/namei.c
index 7316332..fe361cd 100644
--- a/fs/udf/namei.c
+++ b/fs/udf/namei.c
@@ -1308,7 +1308,7 @@
 	return retval;
 }
 
-struct inode_operations udf_dir_inode_operations = {
+const struct inode_operations udf_dir_inode_operations = {
 	.lookup				= udf_lookup,
 	.create				= udf_create,
 	.link				= udf_link,
diff --git a/fs/udf/udfdecl.h b/fs/udf/udfdecl.h
index 1033b7c..ee1dece 100644
--- a/fs/udf/udfdecl.h
+++ b/fs/udf/udfdecl.h
@@ -42,9 +42,9 @@
 struct buffer_head;
 struct super_block;
 
-extern struct inode_operations udf_dir_inode_operations;
+extern const struct inode_operations udf_dir_inode_operations;
 extern const struct file_operations udf_dir_operations;
-extern struct inode_operations udf_file_inode_operations;
+extern const struct inode_operations udf_file_inode_operations;
 extern const struct file_operations udf_file_operations;
 extern const struct address_space_operations udf_aops;
 extern const struct address_space_operations udf_adinicb_aops;