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-rw-r--r--lib/rbtree_test.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/rbtree_test.c b/lib/rbtree_test.c
index b7055b2a07d3..62b8ee92643d 100644
--- a/lib/rbtree_test.c
+++ b/lib/rbtree_test.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/rbtree_augmented.h>