Return the currently active bvec segment, potentially spanning multiple pages.
Signed-off-by: Christoph Hellwig <[email protected]> --- include/linux/blkdev.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h index 0de92b29f589..255e20313cde 100644 --- a/include/linux/blkdev.h +++ b/include/linux/blkdev.h @@ -929,6 +929,13 @@ static inline unsigned int blk_rq_payload_bytes(struct request *rq) return blk_rq_bytes(rq); } +static inline struct bio_vec req_bvec(struct request *rq) +{ + if (rq->rq_flags & RQF_SPECIAL_PAYLOAD) + return rq->special_vec; + return mp_bvec_iter_bvec(rq->bio->bi_io_vec, rq->bio->bi_iter); +} + static inline unsigned int blk_queue_get_max_sectors(struct request_queue *q, int op) { -- 2.20.1
