[PATCH 01/17] block: introduce bio_segments_all()
From: Ming Lei <tom.leiming@gmail.com>
Date: 2017-02-16 11:46:13
Also in:
linux-block, lkml
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
So that we can replace the direct access to .bi_vcnt. Signed-off-by: Ming Lei <tom.leiming@gmail.com> --- include/linux/bio.h | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/include/linux/bio.h b/include/linux/bio.h
index 8e521194f6fc..3364b3ed90e7 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h@@ -293,6 +293,13 @@ static inline void bio_get_last_bvec(struct bio *bio, struct bio_vec *bv) bv->bv_len = iter.bi_bvec_done; } +static inline unsigned bio_segments_all(struct bio *bio) +{ + WARN_ON_ONCE(bio_flagged(bio, BIO_CLONED)); + + return bio->bi_vcnt; +} + enum bip_flags { BIP_BLOCK_INTEGRITY = 1 << 0, /* block layer owns integrity data */ BIP_MAPPED_INTEGRITY = 1 << 1, /* ref tag has been remapped */
--
2.7.4