[PATCH V4 03/45] fs: convert to bio_last_bvec_all()

Ming Lei
2017-12-18T12:23:49Z

This patch convers 3 users to bio_last_bvec_all(), so that we can go
ahread to convert to multipage bvec.

Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
fs/btrfs/compression.c | 2 +-
fs/btrfs/extent_io.c | 2 +-
fs/buffer.c | 2 +-
3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 38a6b091bc25..75610d23d197 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -411,7 +411,7 @@ blk_status_t btrfs_submit_compressed_write(struct inode *inode, u64 start,

static u64 bio_end_offset(struct bio *bio)
{
- struct bio_vec *last = &bio->bi_io_vec[bio->bi_vcnt - 1];
+ struct bio_vec *last = bio_last_bvec_all(bio);

return page_offset(last->bv_page) + last->bv_len + last->bv_offset;
}
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 012d63870b99..69cd63d4503d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2724,7 +2724,7 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
unsigned long bio_flags)
{
blk_status_t ret = 0;
- struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
+ struct bio_vec *bvec = bio_last_bvec_all(bio);
struct page *page = bvec->bv_page;
struct extent_io_tree *tree = bio->bi_private;
u64 start;
diff --git a/fs/buffer.c b/fs/buffer.c
index 0736a6a2e2f0..8b26295a56fe 100644
--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3014,7 +3014,7 @@ static void end_bio_bh_io_sync(struct bio *bio)
void guard_bio_eod(int op, struct bio *bio)
{
sector_t maxsector;
- struct bio_vec *bvec = &bio->bi_io_vec[bio->bi_vcnt - 1];
+ struct bio_vec *bvec = bio_last_bvec_all(bio);
unsigned truncated_bytes;
struct hd_struct *part;

--
2.9.5