btrfs: remove btrfs_add_ordered_extent

All callers are gone now.
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>

fs/btrfs/ordered-data.c

@@ -279,29 +279,6 @@ struct btrfs_ordered_extent *btrfs_alloc_ordered_extent(
 	return entry;
 }
 
-/*
- * Add a new btrfs_ordered_extent for the range, but drop the reference instead
- * of returning it to the caller.
- */
-int btrfs_add_ordered_extent(struct btrfs_inode *inode, u64 file_offset,
-			     u64 num_bytes, u64 ram_bytes, u64 disk_bytenr,
-			     u64 disk_num_bytes, u64 offset, unsigned long flags,
-			     int compress_type)
-{
-	struct btrfs_ordered_extent *ordered;
-
-	ordered = btrfs_alloc_ordered_extent(inode, file_offset, num_bytes,
-					     ram_bytes, disk_bytenr,
-					     disk_num_bytes, offset, flags,
-					     compress_type);
-
-	if (IS_ERR(ordered))
-		return PTR_ERR(ordered);
-	btrfs_put_ordered_extent(ordered);
-
-	return 0;
-}
-
 /*
  * Add a struct btrfs_ordered_sum into the list of checksums to be inserted
  * when an ordered extent is finished.  If the list covers more than one
@@ -579,7 +556,7 @@ void btrfs_remove_ordered_extent(struct btrfs_inode *btrfs_inode,
 	freespace_inode = btrfs_is_free_space_inode(btrfs_inode);
 
 	btrfs_lockdep_acquire(fs_info, btrfs_trans_pending_ordered);
-	/* This is paired with btrfs_add_ordered_extent. */
+	/* This is paired with btrfs_alloc_ordered_extent. */
 	spin_lock(&btrfs_inode->lock);
 	btrfs_mod_outstanding_extents(btrfs_inode, -1);
 	spin_unlock(&btrfs_inode->lock);

fs/btrfs/ordered-data.h

@@ -178,10 +178,6 @@ struct btrfs_ordered_extent *btrfs_alloc_ordered_extent(
 			u64 num_bytes, u64 ram_bytes, u64 disk_bytenr,
 			u64 disk_num_bytes, u64 offset, unsigned long flags,
 			int compress_type);
-int btrfs_add_ordered_extent(struct btrfs_inode *inode, u64 file_offset,
-			     u64 num_bytes, u64 ram_bytes, u64 disk_bytenr,
-			     u64 disk_num_bytes, u64 offset, unsigned long flags,
-			     int compress_type);
 void btrfs_add_ordered_sum(struct btrfs_ordered_extent *entry,
 			   struct btrfs_ordered_sum *sum);
 struct btrfs_ordered_extent *btrfs_lookup_ordered_extent(struct btrfs_inode *inode,