258 	struct file_region *rg, *nrg, *trg;  in region_add()  local
277 		nrg = list_first_entry(&resv->region_cache, struct file_region,  in region_add()
279 		list_del(&nrg->link);  in region_add()
281 		nrg->from = f;  in region_add()
282 		nrg->to = t;  in region_add()
283 		list_add(&nrg->link, rg->link.prev);  in region_add()
294 	nrg = rg;  in region_add()
306 		if (rg != nrg) {  in region_add()
317 	add += (nrg->from - f);		/* Added to beginning of region */  in region_add()
318 	nrg->from = f;  in region_add()
319 	add += t - nrg->to;		/* Added to end of region */  in region_add()
320 	nrg->to = t;  in region_add()
354 	struct file_region *rg, *nrg = NULL;  in region_chg()  local
376 			kfree(nrg);  in region_chg()
395 		if (!nrg) {  in region_chg()
398 			nrg = kmalloc(sizeof(*nrg), GFP_KERNEL);  in region_chg()
399 			if (!nrg)  in region_chg()
402 			nrg->from = f;  in region_chg()
403 			nrg->to   = f;  in region_chg()
404 			INIT_LIST_HEAD(&nrg->link);  in region_chg()
408 		list_add(&nrg->link, rg->link.prev);  in region_chg()
438 	kfree(nrg);  in region_chg()
482 	struct file_region *nrg = NULL;  in region_del()  local
506 			if (!nrg &&  in region_del()
508 				nrg = list_first_entry(&resv->region_cache,  in region_del()
511 				list_del(&nrg->link);  in region_del()
515 			if (!nrg) {  in region_del()
517 				nrg = kmalloc(sizeof(*nrg), GFP_KERNEL);  in region_del()
518 				if (!nrg)  in region_del()
526 			nrg->from = t;  in region_del()
527 			nrg->to = rg->to;  in region_del()
528 			INIT_LIST_HEAD(&nrg->link);  in region_del()
533 			list_add(&nrg->link, &rg->link);  in region_del()
534 			nrg = NULL;  in region_del()
555 	kfree(nrg);  in region_del()