260 			mod = next->ref_mod;  in merge_ref()
262 			if (ref->ref_mod < next->ref_mod) {  in merge_ref()
266 			mod = -next->ref_mod;  in merge_ref()
270 		ref->ref_mod += mod;  in merge_ref()
271 		if (ref->ref_mod == 0) {  in merge_ref()
417 		mod = ref->ref_mod;  in insert_delayed_ref()
420 		if (exist->ref_mod < ref->ref_mod) {  in insert_delayed_ref()
422 			mod = -exist->ref_mod;  in insert_delayed_ref()
423 			exist->ref_mod = ref->ref_mod;  in insert_delayed_ref()
434 			mod = -ref->ref_mod;  in insert_delayed_ref()
436 	exist->ref_mod += mod;  in insert_delayed_ref()
439 	if (exist->ref_mod == 0)  in insert_delayed_ref()
510 	existing->ref_mod += update->ref_mod;  in update_existing_head_ref()
511 	existing->total_ref_mod += update->ref_mod;  in update_existing_head_ref()
565 	head_ref->ref_mod = count_mod;  in init_delayed_ref_head()
638 		if (head_ref->is_data && head_ref->ref_mod < 0)  in add_delayed_ref_head()
694 	ref->ref_mod = 1;  in init_delayed_ref_common()