2515 	struct btrfs_delayed_ref_head *locked_ref = NULL;  in __btrfs_run_delayed_refs()  local
2525 		if (!locked_ref) {  in __btrfs_run_delayed_refs()
2530 			locked_ref = btrfs_select_ref_head(trans);  in __btrfs_run_delayed_refs()
2531 			if (!locked_ref) {  in __btrfs_run_delayed_refs()
2538 			ret = btrfs_delayed_ref_lock(trans, locked_ref);  in __btrfs_run_delayed_refs()
2547 				locked_ref = NULL;  in __btrfs_run_delayed_refs()
2565 		spin_lock(&locked_ref->lock);  in __btrfs_run_delayed_refs()
2566 		btrfs_merge_delayed_refs(trans, delayed_refs, locked_ref);  in __btrfs_run_delayed_refs()
2568 		ref = select_delayed_ref(locked_ref);  in __btrfs_run_delayed_refs()
2572 			spin_unlock(&locked_ref->lock);  in __btrfs_run_delayed_refs()
2573 			unselect_delayed_ref_head(delayed_refs, locked_ref);  in __btrfs_run_delayed_refs()
2574 			locked_ref = NULL;  in __btrfs_run_delayed_refs()
2585 			ret = cleanup_ref_head(trans, locked_ref);  in __btrfs_run_delayed_refs()
2593 			locked_ref = NULL;  in __btrfs_run_delayed_refs()
2600 		rb_erase(&ref->ref_node, &locked_ref->ref_tree);  in __btrfs_run_delayed_refs()
2611 			locked_ref->ref_mod -= ref->ref_mod;  in __btrfs_run_delayed_refs()
2614 			locked_ref->ref_mod += ref->ref_mod;  in __btrfs_run_delayed_refs()
2625 		must_insert_reserved = locked_ref->must_insert_reserved;  in __btrfs_run_delayed_refs()
2626 		locked_ref->must_insert_reserved = 0;  in __btrfs_run_delayed_refs()
2628 		extent_op = locked_ref->extent_op;  in __btrfs_run_delayed_refs()
2629 		locked_ref->extent_op = NULL;  in __btrfs_run_delayed_refs()
2630 		spin_unlock(&locked_ref->lock);  in __btrfs_run_delayed_refs()
2637 			unselect_delayed_ref_head(delayed_refs, locked_ref);  in __btrfs_run_delayed_refs()