From: Ming Lei <ming.lei@redhat.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-block@vger.kernel.org, linux-kernel@vger.kernel.org,
Ming Lei <ming.lei@redhat.com>, Christoph Hellwig <hch@lst.de>,
David Sterba <dsterba@suse.com>,
linux-btrfs@vger.kernel.org
Subject: [PATCH V9 07/19] btrfs: use bvec_last_segment to get bio's last page
Date: Tue, 13 Nov 2018 23:14:53 +0800 [thread overview]
Message-ID: <20181113151505.15498-8-ming.lei@redhat.com> (raw)
In-Reply-To: <20181113151505.15498-1-ming.lei@redhat.com>
Preparing for supporting multi-page bvec.
Cc: Christoph Hellwig <hch@lst.de>
Cc: David Sterba <dsterba@suse.com>
Cc: linux-btrfs@vger.kernel.org
Signed-off-by: Ming Lei <ming.lei@redhat.com>
---
fs/btrfs/compression.c | 5 ++++-
fs/btrfs/extent_io.c | 5 +++--
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c
index 2955a4ea2fa8..161e14b8b180 100644
--- a/fs/btrfs/compression.c
+++ b/fs/btrfs/compression.c
@@ -400,8 +400,11 @@ 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_last_bvec_all(bio);
+ struct bio_vec bv;
- return page_offset(last->bv_page) + last->bv_len + last->bv_offset;
+ bvec_last_segment(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 d228f706ff3e..5d5965297e7e 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -2720,11 +2720,12 @@ static int __must_check submit_one_bio(struct bio *bio, int mirror_num,
{
blk_status_t ret = 0;
struct bio_vec *bvec = bio_last_bvec_all(bio);
- struct page *page = bvec->bv_page;
+ struct bio_vec bv;
struct extent_io_tree *tree = bio->bi_private;
u64 start;
- start = page_offset(page) + bvec->bv_offset;
+ bvec_last_segment(bvec, &bv);
+ start = page_offset(bv.bv_page) + bv.bv_offset;
bio->bi_private = NULL;
--
2.9.5
next prev parent reply other threads:[~2018-11-13 15:17 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-11-13 15:14 [PATCH V9 00/19] block: support multi-page bvec Ming Lei
2018-11-13 15:14 ` [PATCH V9 01/19] block: introduce multi-page page bvec helpers Ming Lei
2018-11-13 15:14 ` [PATCH V9 02/19] block: introduce bio_for_each_bvec() Ming Lei
2018-11-13 15:14 ` [PATCH V9 03/19] block: use bio_for_each_bvec() to compute multi-page bvec count Ming Lei
2018-11-13 15:14 ` [PATCH V9 04/19] block: use bio_for_each_bvec() to map sg Ming Lei
2018-11-13 15:14 ` [PATCH V9 05/19] block: introduce bvec_last_segment() Ming Lei
2018-11-13 15:14 ` [PATCH V9 06/19] fs/buffer.c: use bvec iterator to truncate the bio Ming Lei
2018-11-13 15:14 ` Ming Lei [this message]
2018-11-13 15:14 ` [PATCH V9 08/19] btrfs: move bio_pages_all() to btrfs Ming Lei
2018-11-13 15:14 ` [PATCH V9 09/19] block: introduce bio_bvecs() Ming Lei
2018-11-13 15:14 ` [PATCH V9 10/19] block: loop: pass multi-page bvec to iov_iter Ming Lei
2018-11-13 15:14 ` [PATCH V9 11/19] bcache: avoid to use bio_for_each_segment_all() in bch_bio_alloc_pages() Ming Lei
2018-11-13 15:14 ` [Cluster-devel] [PATCH V9 12/19] block: allow bio_for_each_segment_all() to iterate over multi-page bvec Ming Lei
2018-11-13 15:14 ` Ming Lei
2018-11-13 15:14 ` Ming Lei
2018-11-13 15:14 ` [PATCH V9 13/19] iomap & xfs: only account for new added page Ming Lei
2018-11-13 15:15 ` [PATCH V9 14/19] block: enable multipage bvecs Ming Lei
2018-11-13 15:15 ` [PATCH V9 15/19] block: always define BIO_MAX_PAGES as 256 Ming Lei
2018-11-13 15:15 ` [PATCH V9 16/19] block: document usage of bio iterator helpers Ming Lei
2018-11-13 15:15 ` [PATCH V9 17/19] block: don't use bio->bi_vcnt to figure out segment number Ming Lei
2018-11-13 15:15 ` [PATCH V9 18/19] block: kill QUEUE_FLAG_NO_SG_MERGE Ming Lei
2018-11-13 15:15 ` [PATCH V9 19/19] block: kill BLK_MQ_F_SG_MERGE Ming Lei
2018-11-14 2:44 ` [PATCH V9 00/19] block: support multi-page bvec Dave Chinner
2018-11-14 2:57 ` Ming Lei
2018-11-14 15:22 ` Christoph Hellwig
2018-11-15 9:35 ` Ming Lei
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