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

Jinyoung CHOI
2023-05-03T10:16:24Z

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@lst.de>
Cc: Martin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: Jinyoung Choi <j-young.choi@samsung.com>
---
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