constify dentry_operations: misc filesystems

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/hfs/sysdep.c b/fs/hfs/sysdep.c
index 5bf89ec..7478f5c 100644
--- a/fs/hfs/sysdep.c
+++ b/fs/hfs/sysdep.c
@@ -31,7 +31,7 @@
 	return 1;
 }
 
-struct dentry_operations hfs_dentry_operations =
+const struct dentry_operations hfs_dentry_operations =
 {
 	.d_revalidate	= hfs_revalidate_dentry,
 	.d_hash		= hfs_hash_dentry,