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-rw-r--r--tools/testing/radix-tree/test.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/radix-tree/test.h b/tools/testing/radix-tree/test.h
index 0f8220cc6166..d9c031dbeb1a 100644
--- a/tools/testing/radix-tree/test.h
+++ b/tools/testing/radix-tree/test.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#include <linux/gfp.h>
#include <linux/types.h>
#include <linux/radix-tree.h>