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Groups > linux.kernel > #1587746

[PATCH v1 01/14] block: introduce bio_segments_all()

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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

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[PATCH v1 00/14] md: cleanup on direct access to bvec table Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 06/14] md: raid1: simplify r1buf_pool_free() Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 04/14] md: move two macros into md.h Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 08/14] md: raid1: retrieve page from pre-allocated resync page array Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 13/14] md: raid10: retrieve page from preallocated resync page array Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 14/14] md: raid10: avoid direct access to bvec table in handle_reshape_read_error Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 03/14] md: raid1/raid10: use bio_remove_last_page() Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
  [PATCH v1 01/14] block: introduce bio_segments_all() Ming Lei <tom.leiming@gmail.com> - 2017-02-24 16:50 +0100
    Re: [PATCH v1 01/14] block: introduce bio_segments_all() Christoph Hellwig <hch@infradead.org> - 2017-02-25 19:30 +0100
      Re: [PATCH v1 01/14] block: introduce bio_segments_all() Ming Lei <tom.leiming@gmail.com> - 2017-02-28 13:30 +0100

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