Messages in this thread Patch in this message | | | Subject | [PATCH 1/2] blk-integrity: add rq_integrity_payload_size helper | From | Jinyoung CHOI <> | Date | Wed, 12 Apr 2023 14:21:33 +0900 |
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This provides a nice shortcut to get the size of the integrity data for the driver like NVMe that only support a single integrity segment.
Signed-off-by: Jinyoung Choi <j-young.choi@samsung.com> --- include/linux/blk-integrity.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/linux/blk-integrity.h b/include/linux/blk-integrity.h index 378b2459efe2..abf1923f4aa5 100644 --- a/include/linux/blk-integrity.h +++ b/include/linux/blk-integrity.h @@ -114,6 +114,13 @@ static inline struct bio_vec *rq_integrity_vec(struct request *rq) return NULL; return rq->bio->bi_integrity->bip_vec; } + +static inline unsigned int rq_integrity_payload_size(struct request *rq) +{ + if (WARN_ON_ONCE(queue_max_integrity_segments(rq->q) > 1)) + return 0; + return rq->bio->bi_integrity->bip_iter.bi_size; +} #else /* CONFIG_BLK_DEV_INTEGRITY */ static inline int blk_rq_count_integrity_sg(struct request_queue *q, struct bio *b) -- 2.34.1
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