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-rw-r--r--include/linux/circ_buf.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/circ_buf.h b/include/linux/circ_buf.h
index 90f2471dc6..36b3be9c14 100644
--- a/include/linux/circ_buf.h
+++ b/include/linux/circ_buf.h
@@ -1,3 +1,5 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+
/*
* See Documentation/circular-buffers.txt for more information.
*/