constify dentry_operations: OCFS2

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ocfs2/dcache.c

@@ -455,7 +455,7 @@ out_move:
 	d_move(dentry, target);
 }
 
-struct dentry_operations ocfs2_dentry_ops = {
+const struct dentry_operations ocfs2_dentry_ops = {
 	.d_revalidate		= ocfs2_dentry_revalidate,
 	.d_iput			= ocfs2_dentry_iput,
 };

fs/ocfs2/dcache.h

@@ -26,7 +26,7 @@
 #ifndef OCFS2_DCACHE_H
 #define OCFS2_DCACHE_H
 
-extern struct dentry_operations ocfs2_dentry_ops;
+extern const struct dentry_operations ocfs2_dentry_ops;
 
 struct ocfs2_dentry_lock {
 	/* Use count of dentry lock */