2526 	struct btrfs_delayed_ref_head *locked_ref = NULL;  in __btrfs_run_delayed_refs()  local
2536 		if (!locked_ref) {  in __btrfs_run_delayed_refs()
2541 			locked_ref = btrfs_select_ref_head(trans);  in __btrfs_run_delayed_refs()
2542 			if (!locked_ref) {  in __btrfs_run_delayed_refs()
2549 			ret = btrfs_delayed_ref_lock(trans, locked_ref);  in __btrfs_run_delayed_refs()
2558 				locked_ref = NULL;  in __btrfs_run_delayed_refs()
2576 		spin_lock(&locked_ref->lock);  in __btrfs_run_delayed_refs()
2577 		btrfs_merge_delayed_refs(trans, delayed_refs, locked_ref);  in __btrfs_run_delayed_refs()
2579 		ref = select_delayed_ref(locked_ref);  in __btrfs_run_delayed_refs()
2583 			spin_unlock(&locked_ref->lock);  in __btrfs_run_delayed_refs()
2584 			unselect_delayed_ref_head(delayed_refs, locked_ref);  in __btrfs_run_delayed_refs()
2585 			locked_ref = NULL;  in __btrfs_run_delayed_refs()
2596 			ret = cleanup_ref_head(trans, locked_ref);  in __btrfs_run_delayed_refs()
2604 			locked_ref = NULL;  in __btrfs_run_delayed_refs()
2611 		rb_erase(&ref->ref_node, &locked_ref->ref_tree);  in __btrfs_run_delayed_refs()
2622 			locked_ref->ref_mod -= ref->ref_mod;  in __btrfs_run_delayed_refs()
2625 			locked_ref->ref_mod += ref->ref_mod;  in __btrfs_run_delayed_refs()
2636 		must_insert_reserved = locked_ref->must_insert_reserved;  in __btrfs_run_delayed_refs()
2637 		locked_ref->must_insert_reserved = 0;  in __btrfs_run_delayed_refs()
2639 		extent_op = locked_ref->extent_op;  in __btrfs_run_delayed_refs()
2640 		locked_ref->extent_op = NULL;  in __btrfs_run_delayed_refs()
2641 		spin_unlock(&locked_ref->lock);  in __btrfs_run_delayed_refs()
2648 			unselect_delayed_ref_head(delayed_refs, locked_ref);  in __btrfs_run_delayed_refs()