[v2] btrfs: Remove bio_offset argument from submit_bio_hook

Commit Message

Nikolay Borisov April 10, 2019, 4:46 p.m. UTC

None of the implementers of the submit_bio_hook use the bio_offset
parameter, simply remove it. No functional changes.

Signed-off-by: Nikolay Borisov <[e-mail]>
---

Change since v1: 

 * Remove code dealing with bio internals in submit_one_bio.

 fs/btrfs/disk-io.c   |  4 ++--
 fs/btrfs/extent_io.c | 10 ++--------
 fs/btrfs/extent_io.h |  3 +--
 fs/btrfs/inode.c     |  5 +++--
 4 files changed, 8 insertions(+), 14 deletions(-)

Comments

Johannes Thumshirn April 11, 2019, 1:29 p.m. UTC | #1

Looks good,
Reviewed-by: Johannes Thumshirn <[e-mail]>

Here you could also add the removal of bio_offset from async_submit_bio.

Nikolay Borisov April 11, 2019, 2:39 p.m. UTC | #2

On 11.04.19 г. 16:29 ч., Johannes Thumshirn wrote:
> Looks good,
> Reviewed-by: Johannes Thumshirn <[e-mail]>
> 
> Here you could also add the removal of bio_offset from async_submit_bio.
> 

Actually no, we can't since for DIO case we do use it from:
btrfs_submit_dio_bio->btrfs_wq_submit_bio

Patch

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index ee9e03b8aae3..0a7897adc58f 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -885,8 +885,8 @@  static int check_async_write(struct btrfs_inode *bi)
 }
 
 static blk_status_t btree_submit_bio_hook(struct inode *inode, struct bio *bio,
-					  int mirror_num, unsigned long bio_flags,
-					  u64 bio_offset)
+					  int mirror_num,
+					  unsigned long bio_flags)
 {
 	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
 	int async = check_async_write(BTRFS_I(inode));
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 048d6c6fe7b9..9aa79ad794c9 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -149,19 +149,13 @@  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_last_bvec_all(bio);
-	struct bio_vec bv;
 	struct extent_io_tree *tree = bio->bi_private;
-	u64 start;
-
-	mp_bvec_last_segment(bvec, &bv);
-	start = page_offset(bv.bv_page) + bv.bv_offset;
 
 	bio->bi_private = NULL;
 
 	if (tree->ops)
 		ret = tree->ops->submit_bio_hook(tree->private_data, bio,
-					   mirror_num, bio_flags, start);
+						 mirror_num, bio_flags);
 	else
 		btrfsic_submit_bio(bio);
 
@@ -2546,7 +2540,7 @@  static int bio_readpage_error(struct bio *failed_bio, u64 phy_offset,
 		read_mode, failrec->this_mirror, failrec->in_validation);
 
 	status = tree->ops->submit_bio_hook(tree->private_data, bio, failrec->this_mirror,
-					 failrec->bio_flags, 0);
+					 failrec->bio_flags);
 	if (status) {
 		free_io_failure(failure_tree, tree, failrec);
 		bio_put(bio);
diff --git a/fs/btrfs/extent_io.h b/fs/btrfs/extent_io.h
index 37240e03c4e3..aa18a16a6ed7 100644
--- a/fs/btrfs/extent_io.h
+++ b/fs/btrfs/extent_io.h
@@ -105,8 +105,7 @@  struct extent_io_ops {
 	 * pointer will be called unconditionally.
 	 */
 	blk_status_t (*submit_bio_hook)(struct inode *inode, struct bio *bio,
-					int mirror_num, unsigned long bio_flags,
-					u64 bio_offset);
+					int mirror_num, unsigned long bio_flags);
 	int (*readpage_end_io_hook)(struct btrfs_io_bio *io_bio, u64 phy_offset,
 				    struct page *page, u64 start, u64 end,
 				    int mirror);
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 6e5f1afa7407..476111d44021 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -1954,8 +1954,9 @@  static blk_status_t btrfs_submit_bio_start(void *private_data, struct bio *bio,
  *    c-3) otherwise:			async submit
  */
 static blk_status_t btrfs_submit_bio_hook(struct inode *inode, struct bio *bio,
-				 int mirror_num, unsigned long bio_flags,
-				 u64 bio_offset)
+					  int mirror_num,
+					  unsigned long bio_flags)
+
 {
 	struct btrfs_fs_info *fs_info = btrfs_sb(inode->i_sb);
 	struct btrfs_root *root = BTRFS_I(inode)->root;