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-rw-r--r--tools/testing/selftests/nsfs/pidns.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/tools/testing/selftests/nsfs/pidns.c b/tools/testing/selftests/nsfs/pidns.c
index ae3a0d68e966..1182d4e437a2 100644
--- a/tools/testing/selftests/nsfs/pidns.c
+++ b/tools/testing/selftests/nsfs/pidns.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
#define _GNU_SOURCE
#include <sched.h>
#include <unistd.h>