575 	struct btrfs_delayed_ref_head *head_ref = NULL;  in add_delayed_ref_head()  local
618 	head_ref = btrfs_delayed_node_to_head(ref);  in add_delayed_ref_head()
619 	head_ref->must_insert_reserved = must_insert_reserved;  in add_delayed_ref_head()
620 	head_ref->is_data = is_data;  in add_delayed_ref_head()
621 	head_ref->ref_root = RB_ROOT;  in add_delayed_ref_head()
622 	head_ref->processing = 0;  in add_delayed_ref_head()
623 	head_ref->total_ref_mod = count_mod;  in add_delayed_ref_head()
625 	spin_lock_init(&head_ref->lock);  in add_delayed_ref_head()
626 	mutex_init(&head_ref->mutex);  in add_delayed_ref_head()
628 	trace_add_delayed_ref_head(ref, head_ref, action);  in add_delayed_ref_head()
631 				&head_ref->href_node);  in add_delayed_ref_head()
638 		kmem_cache_free(btrfs_delayed_ref_head_cachep, head_ref);  in add_delayed_ref_head()
639 		head_ref = existing;  in add_delayed_ref_head()
648 	return head_ref;  in add_delayed_ref_head()
657 		     struct btrfs_delayed_ref_head *head_ref,  in add_delayed_tree_ref()  argument
696 	spin_lock(&head_ref->lock);  in add_delayed_tree_ref()
697 	existing = tree_insert(&head_ref->ref_root, &ref->rb_node);  in add_delayed_tree_ref()
699 		update_existing_ref(trans, delayed_refs, head_ref, existing,  in add_delayed_tree_ref()
710 	spin_unlock(&head_ref->lock);  in add_delayed_tree_ref()
719 		     struct btrfs_delayed_ref_head *head_ref,  in add_delayed_data_ref()  argument
761 	spin_lock(&head_ref->lock);  in add_delayed_data_ref()
762 	existing = tree_insert(&head_ref->ref_root, &ref->rb_node);  in add_delayed_data_ref()
764 		update_existing_ref(trans, delayed_refs, head_ref, existing,  in add_delayed_data_ref()
775 	spin_unlock(&head_ref->lock);  in add_delayed_data_ref()
791 	struct btrfs_delayed_ref_head *head_ref;  in btrfs_add_delayed_tree_ref()  local
802 	head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS);  in btrfs_add_delayed_tree_ref()
803 	if (!head_ref) {  in btrfs_add_delayed_tree_ref()
808 	head_ref->extent_op = extent_op;  in btrfs_add_delayed_tree_ref()
817 	head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node,  in btrfs_add_delayed_tree_ref()
820 	add_delayed_tree_ref(fs_info, trans, head_ref, &ref->node, bytenr,  in btrfs_add_delayed_tree_ref()
840 	struct btrfs_delayed_ref_head *head_ref;  in btrfs_add_delayed_data_ref()  local
851 	head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS);  in btrfs_add_delayed_data_ref()
852 	if (!head_ref) {  in btrfs_add_delayed_data_ref()
857 	head_ref->extent_op = extent_op;  in btrfs_add_delayed_data_ref()
866 	head_ref = add_delayed_ref_head(fs_info, trans, &head_ref->node,  in btrfs_add_delayed_data_ref()
869 	add_delayed_data_ref(fs_info, trans, head_ref, &ref->node, bytenr,  in btrfs_add_delayed_data_ref()
882 	struct btrfs_delayed_ref_head *head_ref;  in btrfs_add_delayed_extent_op()  local
885 	head_ref = kmem_cache_alloc(btrfs_delayed_ref_head_cachep, GFP_NOFS);  in btrfs_add_delayed_extent_op()
886 	if (!head_ref)  in btrfs_add_delayed_extent_op()
889 	head_ref->extent_op = extent_op;  in btrfs_add_delayed_extent_op()
894 	add_delayed_ref_head(fs_info, trans, &head_ref->node, bytenr,  in btrfs_add_delayed_extent_op()