[PATCH 08/15] block: add helper function to get the number of integrity segments

[Jinyoung CHOI]

Since request always has the number of integrity segments in the process
of generating and merging, a function for simply obtained this has been
added.

Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx>

Signed-off-by: Jinyoung Choi <j-young.choi@xxxxxxxxxxx>
---
 include/linux/blk-integrity.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h
index 378b2459efe2..45b9fde1fee1 100644
--- a/include/linux/blk-integrity.h
+++ b/include/linux/blk-integrity.h
@@ -43,6 +43,11 @@ int blk_rq_map_integrity_sg(struct request_queue *, struct bio *,
 				   struct scatterlist *);
 int blk_rq_count_integrity_sg(struct request_queue *, struct bio *);
 
+static inline unsigned short blk_rq_nr_integrity_segments(struct request *rq)
+{
+	return rq->nr_integrity_segments;
+}
+
 static inline struct blk_integrity *blk_get_integrity(struct gendisk *disk)
 {
 	struct blk_integrity *bi = &disk->queue->integrity;
@@ -120,6 +125,10 @@ static inline int blk_rq_count_integrity_sg(struct request_queue *q,
 {
 	return 0;
 }
+static inline unsigned short blk_rq_nr_integrity_segments(struct request *rq)
+{
+	return 0;
+}
 static inline int blk_rq_map_integrity_sg(struct request_queue *q,
 					  struct bio *b,
 					  struct scatterlist *s)
-- 
2.34.1