Preparing for supporting multipage bvec.
Signed-off-by: Ming Lei <tom.leiming@xxxxxxxxx>
---
fs/btrfs/compression.c | 5 ++++-
fs/btrfs/extent_io.c | 8 ++++++--
2 files changed, 10 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index adcf5568f010..485a60923bba 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -448,8 +448,11 @@ int 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 uninitialized_var(bv);
- return page_offset(last->bv_page) + last->bv_len + last->bv_offset;
+ bvec_get_last_sp(last, &bv);
+
+ return page_offset(bv.bv_page) + bv.bv_len + bv.bv_offset;
}
static noinline int add_ra_bio_pages(struct inode *inode,
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 3c021f4dd8bf..4a1c81cee883 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2733,11 +2733,15 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
{
int ret = 0;
struct bio_vec *bvec = bio->bi_io_vec + bio->bi_vcnt - 1;
- struct page *page = bvec->bv_page;
struct extent_io_tree *tree = bio->bi_private;
+ struct bio_vec uninitialized_var(bv);
+ struct page *page;
u64 start;
- start = page_offset(page) + bvec->bv_offset;
+ bvec_get_last_sp(bvec, &bv);
+ page = bv.bv_page;
+
+ start = page_offset(page) + bv.bv_offset;
bio->bi_private = NULL;
bio_get(bio);
--
2.7.4
--
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