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-rw-r--r--tools/include/linux/poison.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/include/linux/poison.h b/tools/include/linux/poison.h
index 51334edec506..4bf6777a8a03 100644
--- a/tools/include/linux/poison.h
+++ b/tools/include/linux/poison.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_POISON_H
#define _LINUX_POISON_H