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-rw-r--r--lib/percpu-refcount.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/percpu-refcount.c b/lib/percpu-refcount.c
index da54318d3b55..071a76c7bac0 100644
--- a/lib/percpu-refcount.c
+++ b/lib/percpu-refcount.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
#define pr_fmt(fmt) "%s: " fmt "\n", __func__
#include <linux/kernel.h>