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-rw-r--r--include/linux/pfn.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/pfn.h b/include/linux/pfn.h
index 1132953235c0..14bc053c53d8 100644
--- a/include/linux/pfn.h
+++ b/include/linux/pfn.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_PFN_H_
#define _LINUX_PFN_H_