This provides a nice little shortcut to get the integrity data for drivers like NVMe that only support a single integrity segment.
Signed-off-by: Christoph Hellwig <[email protected]> --- include/linux/blkdev.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 255e20313cde..f9a072610d28 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -1552,6 +1552,16 @@ static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi, return bio_integrity_intervals(bi, sectors) * bi->tuple_size; } +/* + * Return the first bvec that contains integrity data. In general only + * drivers that are limited to a single integrity segment should use this + * helper. + */ +static inline struct bio_vec *rq_integrity_vec(struct request *rq) +{ + return rq->bio->bi_integrity->bip_vec; +} + #else /* CONFIG_BLK_DEV_INTEGRITY */ struct bio; @@ -1626,6 +1636,11 @@ static inline unsigned int bio_integrity_bytes(struct blk_integrity *bi, return 0; } +static inline struct bio_vec *rq_integrity_vec(struct request *rq) +{ + return NULL; +} + #endif /* CONFIG_BLK_DEV_INTEGRITY */ struct block_device_operations { -- 2.20.1
