When a request is initialized through the bio, bio's integrity
information is not reflected in the request. It seems to be missing
when the codes associated with 'nr_integrity_segment' were added.
the lld such as scsi does not refer to this variable. It uses
integrity's bevc to calculate the number of segments for sg-list. So
there seems to be no problem related to this.
Cc: Christoph Hellwig <hch@xxxxxx>
Cc: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Fixes: 13f05c8d8e98 ("block/scsi: Provide a limit on the number of integrity segments")
Signed-off-by: Jinyoung Choi <j-young.choi@xxxxxxxxxxx>
---
include/linux/blk-mq.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/include/linux/blk-mq.h b/include/linux/blk-mq.h
index 1dacb2c81fdd..9310c94577c7 100644
--- a/include/linux/blk-mq.h
+++ b/include/linux/blk-mq.h
@@ -961,6 +961,11 @@ static inline void blk_rq_bio_prep(struct request *rq, struct bio *bio,
rq->__data_len = bio->bi_iter.bi_size;
rq->bio = rq->biotail = bio;
rq->ioprio = bio_prio(bio);
+
+#if defined(CONFIG_BLK_DEV_INTEGRITY)
+ if (bio_integrity(bio))
+ rq->nr_integrity_segments = bio_integrity(bio)->bip_vcnt;
+#endif
}
void blk_mq_hctx_set_fq_lock_class(struct blk_mq_hw_ctx *hctx,
--
2.34.1
