btrfs: Remove bio_offset argument from submit_bio_hook

None of the implementers of the submit_bio_hook use the bio_offset
parameter, simply remove it. No functional changes.
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Nikolay Borisov <nborisov@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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));

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);

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);

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;