btrfs-progs: update btrfs_extend_item to match the kernel definition

Similar to btrfs_truncate_item(), this is void in the kernel as the
failure case is simply BUG_ON().  Additionally there is no root
parameter as it's not used in the function at all.  Make these changes
and update the callers.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>

kernel-shared/ctree.c

@@ -2661,10 +2661,8 @@ void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end)
 	}
 }
 
-int btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path,
-		      u32 data_size)
+void btrfs_extend_item(struct btrfs_path *path, u32 data_size)
 {
-	int ret = 0;
 	int slot;
 	struct extent_buffer *leaf;
 	u32 nritems;
@@ -2712,12 +2710,10 @@ int btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path,
 	btrfs_set_item_size(leaf, slot, old_size + data_size);
 	btrfs_mark_buffer_dirty(leaf);
 
-	ret = 0;
 	if (btrfs_leaf_free_space(leaf) < 0) {
 		btrfs_print_leaf(leaf);
 		BUG();
 	}
-	return ret;
 }
 
 /*
@@ -3366,7 +3362,7 @@ int btrfs_uuid_tree_add(struct btrfs_trans_handle *trans, u8 *uuid, u8 type,
 		 * ret == -EEXIST case, An item with that type already exists.
 		 * Extend the item and store the new subvol_id at the end.
 		 */
-		btrfs_extend_item(uuid_root, path, sizeof(subvol_id_le));
+		btrfs_extend_item(path, sizeof(subvol_id_le));
 		eb = path->nodes[0];
 		slot = path->slots[0];
 		offset = btrfs_item_ptr_offset(eb, slot);

kernel-shared/ctree.h

@@ -974,8 +974,7 @@ int btrfs_copy_root(struct btrfs_trans_handle *trans,
 		      struct extent_buffer **cow_ret, u64 new_root_objectid);
 int btrfs_create_root(struct btrfs_trans_handle *trans,
 		      struct btrfs_fs_info *fs_info, u64 objectid);
-int btrfs_extend_item(struct btrfs_root *root, struct btrfs_path *path,
-		u32 data_size);
+void btrfs_extend_item(struct btrfs_path *path, u32 data_size);
 void btrfs_truncate_item(struct btrfs_path *path, u32 new_size, int from_end);
 int btrfs_split_item(struct btrfs_trans_handle *trans,
 		     struct btrfs_root *root,

kernel-shared/dir-item.c

@@ -48,8 +48,8 @@ static struct btrfs_dir_item *insert_with_overflow(struct btrfs_trans_handle
 		di = btrfs_match_dir_item_name(root, path, name, name_len);
 		if (di)
 			return ERR_PTR(-EEXIST);
-		ret = btrfs_extend_item(root, path, data_size);
-		WARN_ON(ret > 0);
+		btrfs_extend_item(path, data_size);
+		ret = 0;
 	}
 	if (ret < 0)
 		return ERR_PTR(ret);

kernel-shared/extent-tree.c

@@ -1039,7 +1039,6 @@ static int setup_inline_extent_backref(struct btrfs_root *root,
 	u64 refs;
 	int size;
 	int type;
-	int ret;
 
 	leaf = path->nodes[0];
 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
@@ -1048,8 +1047,7 @@ static int setup_inline_extent_backref(struct btrfs_root *root,
 	type = extent_ref_type(parent, owner);
 	size = btrfs_extent_inline_ref_size(type);
 
-	ret = btrfs_extend_item(root, path, size);
-	BUG_ON(ret);
+	btrfs_extend_item(path, size);
 
 	ei = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_extent_item);
 	refs = btrfs_extent_refs(leaf, ei);

kernel-shared/file-item.c

@@ -282,8 +282,7 @@ int btrfs_csum_file_block(struct btrfs_trans_handle *trans, u64 logical,
 		diff = diff - btrfs_item_size(leaf, path->slots[0]);
 		if (diff != csum_size)
 			goto insert;
-		ret = btrfs_extend_item(root, path, diff);
-		BUG_ON(ret);
+		btrfs_extend_item(path, diff);
 		goto csum;
 	}
 

kernel-shared/inode-item.c

@@ -78,8 +78,7 @@ int btrfs_insert_inode_ref(struct btrfs_trans_handle *trans,
 			goto out;
 
 		old_size = btrfs_item_size(path->nodes[0], path->slots[0]);
-		ret = btrfs_extend_item(root, path, ins_len);
-		BUG_ON(ret);
+		btrfs_extend_item(path, ins_len);
 		ref = btrfs_item_ptr(path->nodes[0], path->slots[0],
 				     struct btrfs_inode_ref);
 		ref = (struct btrfs_inode_ref *)((unsigned long)ref + old_size);
@@ -352,7 +351,7 @@ int btrfs_insert_inode_extref(struct btrfs_trans_handle *trans,
 						   name, name_len, NULL))
 			goto out;
 
-		btrfs_extend_item(root, path, ins_len);
+		btrfs_extend_item(path, ins_len);
 		ret = 0;
 	}