542 	struct btrfs_delayed_ref_head *head_ref = NULL;  in add_delayed_ref_head()  local
589 	head_ref = btrfs_delayed_node_to_head(ref);  in add_delayed_ref_head()
590 	head_ref->must_insert_reserved = must_insert_reserved;  in add_delayed_ref_head()
591 	head_ref->is_data = is_data;  in add_delayed_ref_head()
592 	INIT_LIST_HEAD(&head_ref->ref_list);  in add_delayed_ref_head()
593 	head_ref->processing = 0;  in add_delayed_ref_head()
594 	head_ref->total_ref_mod = count_mod;  in add_delayed_ref_head()
595 	head_ref->qgroup_reserved = 0;  in add_delayed_ref_head()
596 	head_ref->qgroup_ref_root = 0;  in add_delayed_ref_head()
601 			head_ref->qgroup_ref_root = ref_root;  in add_delayed_ref_head()
602 			head_ref->qgroup_reserved = reserved;  in add_delayed_ref_head()
615 	spin_lock_init(&head_ref->lock);  in add_delayed_ref_head()
616 	mutex_init(&head_ref->mutex);  in add_delayed_ref_head()
618 	trace_add_delayed_ref_head(ref, head_ref, action);  in add_delayed_ref_head()
621 				&head_ref->href_node);  in add_delayed_ref_head()
630 		kmem_cache_free(btrfs_delayed_ref_head_cachep, head_ref);  in add_delayed_ref_head()
631 		head_ref = existing;  in add_delayed_ref_head()
640 	return head_ref;  in add_delayed_ref_head()
649 		     struct btrfs_delayed_ref_head *head_ref,  in add_delayed_tree_ref()  argument
687 	ret = add_delayed_ref_tail_merge(trans, delayed_refs, head_ref, ref);  in add_delayed_tree_ref()
703 		     struct btrfs_delayed_ref_head *head_ref,  in add_delayed_data_ref()  argument
744 	ret = add_delayed_ref_tail_merge(trans, delayed_refs, head_ref, ref);  in add_delayed_data_ref()
762 	struct btrfs_delayed_ref_head *head_ref;  in btrfs_add_delayed_tree_ref()  local
771 	head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS);  in btrfs_add_delayed_tree_ref()
772 	if (!head_ref)  in btrfs_add_delayed_tree_ref()
781 	head_ref->extent_op = extent_op;  in btrfs_add_delayed_tree_ref()
790 	head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node, record,  in btrfs_add_delayed_tree_ref()
793 	add_delayed_tree_ref(fs_info, trans, head_ref, &ref->node, bytenr,  in btrfs_add_delayed_tree_ref()
800 	kmem_cache_free(btrfs_delayed_ref_head_cachep, head_ref);  in btrfs_add_delayed_tree_ref()
818 	struct btrfs_delayed_ref_head *head_ref;  in btrfs_add_delayed_data_ref()  local
827 	head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS);  in btrfs_add_delayed_data_ref()
828 	if (!head_ref) {  in btrfs_add_delayed_data_ref()
838 					head_ref);  in btrfs_add_delayed_data_ref()
843 	head_ref->extent_op = extent_op;  in btrfs_add_delayed_data_ref()
852 	head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node, record,  in btrfs_add_delayed_data_ref()
856 	add_delayed_data_ref(fs_info, trans, head_ref, &ref->node, bytenr,  in btrfs_add_delayed_data_ref()
896 	struct btrfs_delayed_ref_head *head_ref;  in btrfs_add_delayed_extent_op()  local
899 	head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS);  in btrfs_add_delayed_extent_op()
900 	if (!head_ref)  in btrfs_add_delayed_extent_op()
903 	head_ref->extent_op = extent_op;  in btrfs_add_delayed_extent_op()
908 	add_delayed_ref_head(fs_info, trans, &head_ref->node, NULL, bytenr,  in btrfs_add_delayed_extent_op()