244 	long from;  member
280 	if (&rg->link == head || t < rg->from) {  in region_add()
288 		nrg->from = f;  in region_add()
297 	if (f > rg->from)  in region_add()
298 		f = rg->from;  in region_add()
305 		if (rg->from > t)  in region_add()
318 			add -= (rg->to - rg->from);  in region_add()
324 	add += (nrg->from - f);		/* Added to beginning of region */  in region_add()
325 	nrg->from = f;  in region_add()
401 	if (&rg->link == head || t < rg->from) {  in region_chg()
409 			nrg->from = f;  in region_chg()
421 	if (f > rg->from)  in region_chg()
422 		f = rg->from;  in region_chg()
429 		if (rg->from > t)  in region_chg()
439 		chg -= rg->to - rg->from;  in region_chg()
502 		if (rg->to <= f && (rg->to != rg->from || rg->to != f))  in region_del()
505 		if (rg->from >= t)  in region_del()
508 		if (f > rg->from && t < rg->to) { /* Must split region */  in region_del()
533 			nrg->from = t;  in region_del()
545 		if (f <= rg->from && t >= rg->to) { /* Remove entire region */  in region_del()
546 			del += rg->to - rg->from;  in region_del()
552 		if (f <= rg->from) {	/* Trim beginning of region */  in region_del()
553 			del += t - rg->from;  in region_del()
554 			rg->from = t;  in region_del()
606 		if (rg->from >= t)  in region_count()
609 		seg_from = max(rg->from, f);  in region_count()
4646 					long from, long to,  in hugetlb_reserve_pages()  argument
4657 	if (from > to) {  in hugetlb_reserve_pages()
4684 		chg = region_chg(resv_map, from, to);  in hugetlb_reserve_pages()
4691 		chg = to - from;  in hugetlb_reserve_pages()
4736 		long add = region_add(resv_map, from, to);  in hugetlb_reserve_pages()
4758 			region_abort(resv_map, from, to);  in hugetlb_reserve_pages()