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-rw-r--r--block/blk-wbt.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/block/blk-wbt.c b/block/blk-wbt.c
index fd166fbb0f65..313f45a37e9d 100644
--- a/block/blk-wbt.c
+++ b/block/blk-wbt.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
/*
* buffered writeback throttling. loosely based on CoDel. We can't drop
* packets for IO scheduling, so the logic is something like this: