block: remove the unused blk_integrity_merge_bio export

Also move the definition from the public blkdev.h to the private
block/blk.h header.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

block/blk-integrity.c

@@ -211,7 +211,6 @@ bool blk_integrity_merge_bio(struct request_queue *q, struct request *req,
 
 	return true;
 }
-EXPORT_SYMBOL(blk_integrity_merge_bio);
 
 struct integrity_sysfs_entry {
 	struct attribute attr;

block/blk.h

@@ -122,6 +122,8 @@ static inline bool bio_integrity_endio(struct bio *bio)
 
 bool blk_integrity_merge_rq(struct request_queue *, struct request *,
 		struct request *);
+bool blk_integrity_merge_bio(struct request_queue *, struct request *,
+		struct bio *);
 
 static inline bool integrity_req_gap_back_merge(struct request *req,
 		struct bio *next)
@@ -151,6 +153,11 @@ static inline bool blk_integrity_merge_rq(struct request_queue *rq,
 {
 	return true;
 }
+static inline bool blk_integrity_merge_bio(struct request_queue *rq,
+		struct request *r, struct bio *b)
+{
+	return true;
+}
 static inline bool integrity_req_gap_back_merge(struct request *req,
 		struct bio *next)
 {

include/linux/blkdev.h

@@ -1664,8 +1664,6 @@ extern int blk_integrity_compare(struct gendisk *, struct gendisk *);
 extern int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
 				   struct scatterlist *);
 extern int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
-extern bool blk_integrity_merge_bio(struct request_queue *, struct request *,
-				    struct bio *);
 
 static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
 {
@@ -1793,12 +1791,6 @@ static inline unsigned short queue_max_integrity_segments(const struct request_q
 {
 	return 0;
 }
-static inline bool blk_integrity_merge_bio(struct request_queue *rq,
-					   struct request *r,
-					   struct bio *b)
-{
-	return true;
-}
 
 static inline unsigned int bio_integrity_intervals(struct blk_integrity *bi,
 						   unsigned int sectors)