constify dentry_operations: ecryptfs

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/ecryptfs/dentry.c b/fs/ecryptfs/dentry.c
index 5e59658..2dda5ad 100644
--- a/fs/ecryptfs/dentry.c
+++ b/fs/ecryptfs/dentry.c
@@ -89,7 +89,7 @@
 	return;
 }
 
-struct dentry_operations ecryptfs_dops = {
+const struct dentry_operations ecryptfs_dops = {
 	.d_revalidate = ecryptfs_d_revalidate,
 	.d_release = ecryptfs_d_release,
 };