1 files changed, 2 insertions, 2 deletions

diff --git a/include/linux/blktrace_api.h b/include/linux/blktrace_api.h
index 3395cf7130f5..8c7c2de7631a 100644
--- a/include/linux/blktrace_api.h
+++ b/include/linux/blktrace_api.h
@@ -169,7 +169,8 @@ extern void blk_trace_shutdown(struct request_queue *);
 extern int do_blk_trace_setup(struct request_queue *q, char *name,
                               dev_t dev, struct block_device *bdev,
                               struct blk_user_trace_setup *buts);
-extern void __trace_note_message(struct blk_trace *, const char *fmt, ...);
+extern __attribute__((format(printf, 2, 3)))
+void __trace_note_message(struct blk_trace *, const char *fmt, ...);
 
 /**
  * blk_add_trace_msg - Add a (simple) message to the blktrace stream
@@ -245,7 +246,6 @@ static inline int blk_cmd_buf_len(struct request *rq)
 
 extern void blk_dump_cmd(char *buf, struct request *rq);
 extern void blk_fill_rwbs(char *rwbs, u32 rw, int bytes);
-extern void blk_fill_rwbs_rq(char *rwbs, struct request *rq);
 
 #endif /* CONFIG_EVENT_TRACING && CONFIG_BLOCK */