[PATCH -next] blktrace: make function blk_trace_bio_get_cgid() static

[Wang Hai]

The sparse tool complains as follows:

kernel/trace/blktrace.c:796:5: warning:
 symbol 'blk_trace_bio_get_cgid' was not declared. Should it be static?

This function is not used outside of blktrace.c, so this commit
marks it static.

Reported-by: Hulk Robot <hulkci@xxxxxxxxxx>
Signed-off-by: Wang Hai <wanghai38@xxxxxxxxxx>
---
 kernel/trace/blktrace.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 4b3a42fc3b24..c0887f32f647 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -793,7 +793,7 @@ static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio)
 	return cgroup_id(bio_blkcg(bio)->css.cgroup);
 }
 #else
-u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio)
+static u64 blk_trace_bio_get_cgid(struct request_queue *q, struct bio *bio)
 {
 	return 0;
 }
-- 
2.17.1