262 static long region_add(struct resv_map *resv, long f, long t)  in region_add()  argument
271 		if (f <= rg->to)  in region_add()
288 		nrg->from = f;  in region_add()
292 		add += t - f;  in region_add()
297 	if (f > rg->from)  in region_add()
298 		f = 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()
358 static long region_chg(struct resv_map *resv, long f, long t)  in region_chg()  argument
395 		if (f <= rg->to)  in region_chg()
409 			nrg->from = f;  in region_chg()
410 			nrg->to   = f;  in region_chg()
416 		chg = t - f;  in region_chg()
421 	if (f > rg->from)  in region_chg()
422 		f = rg->from;  in region_chg()
423 	chg = t - f;  in region_chg()
463 static void region_abort(struct resv_map *resv, long f, long t)  in region_abort()  argument
485 static long region_del(struct resv_map *resv, long f, long t)  in region_del()  argument
502 		if (rg->to <= f && (rg->to != rg->from || rg->to != f))  in region_del()
508 		if (f > rg->from && t < rg->to) { /* Must split region */  in region_del()
530 			del += t - f;  in region_del()
538 			rg->to = f;  in region_del()
545 		if (f <= rg->from && t >= rg->to) { /* Remove entire region */  in region_del()
552 		if (f <= rg->from) {	/* Trim beginning of region */  in region_del()
556 			del += rg->to - f;  in region_del()
557 			rg->to = f;  in region_del()
592 static long region_count(struct resv_map *resv, long f, long t)  in region_count()  argument
604 		if (rg->to <= f)  in region_count()
609 		seg_from = max(rg->from, f);  in region_count()