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-rw-r--r--lib/refcount.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/refcount.c b/lib/refcount.c
index 5d0582a9480c6..0eb48353abe30 100644
--- a/lib/refcount.c
+++ b/lib/refcount.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* Variant of atomic_t specialized for reference counts.
*