251 	struct file_region *nrg = NULL;  in get_file_region_entry_from_cache()  local
256 	nrg = list_first_entry(&resv->region_cache, struct file_region, link);  in get_file_region_entry_from_cache()
257 	list_del(&nrg->link);  in get_file_region_entry_from_cache()
259 	nrg->from = from;  in get_file_region_entry_from_cache()
260 	nrg->to = to;  in get_file_region_entry_from_cache()
262 	return nrg;  in get_file_region_entry_from_cache()
265 static void copy_hugetlb_cgroup_uncharge_info(struct file_region *nrg,  in copy_hugetlb_cgroup_uncharge_info()  argument
269 	nrg->reservation_counter = rg->reservation_counter;  in copy_hugetlb_cgroup_uncharge_info()
270 	nrg->css = rg->css;  in copy_hugetlb_cgroup_uncharge_info()
280 						struct file_region *nrg)  in record_hugetlb_cgroup_uncharge_info()  argument
284 		nrg->reservation_counter =  in record_hugetlb_cgroup_uncharge_info()
286 		nrg->css = &h_cg->css;  in record_hugetlb_cgroup_uncharge_info()
305 		nrg->reservation_counter = NULL;  in record_hugetlb_cgroup_uncharge_info()
306 		nrg->css = NULL;  in record_hugetlb_cgroup_uncharge_info()
334 	struct file_region *nrg = NULL, *prg = NULL;  in coalesce_file_region()  local
348 	nrg = list_next_entry(rg, link);  in coalesce_file_region()
349 	if (&nrg->link != &resv->regions && nrg->from == rg->to &&  in coalesce_file_region()
350 	    has_same_uncharge_info(nrg, rg)) {  in coalesce_file_region()
351 		nrg->from = rg->from;  in coalesce_file_region()
374 	struct file_region *rg = NULL, *trg = NULL, *nrg = NULL;  in add_reservation_in_range()  local
406 				nrg = get_file_region_entry_from_cache(  in add_reservation_in_range()
409 								    resv, nrg);  in add_reservation_in_range()
410 				list_add(&nrg->link, rg->link.prev);  in add_reservation_in_range()
411 				coalesce_file_region(resv, nrg);  in add_reservation_in_range()
425 			nrg = get_file_region_entry_from_cache(  in add_reservation_in_range()
427 			record_hugetlb_cgroup_uncharge_info(h_cg, h, resv, nrg);  in add_reservation_in_range()
428 			list_add(&nrg->link, rg->link.prev);  in add_reservation_in_range()
429 			coalesce_file_region(resv, nrg);  in add_reservation_in_range()
644 	struct file_region *nrg = NULL;  in region_del()  local
668 			if (!nrg &&  in region_del()
670 				nrg = list_first_entry(&resv->region_cache,  in region_del()
673 				list_del(&nrg->link);  in region_del()
677 			if (!nrg) {  in region_del()
679 				nrg = kmalloc(sizeof(*nrg), GFP_KERNEL);  in region_del()
680 				if (!nrg)  in region_del()
690 			nrg->from = t;  in region_del()
691 			nrg->to = rg->to;  in region_del()
693 			copy_hugetlb_cgroup_uncharge_info(nrg, rg);  in region_del()
695 			INIT_LIST_HEAD(&nrg->link);  in region_del()
700 			list_add(&nrg->link, &rg->link);  in region_del()
701 			nrg = NULL;  in region_del()
730 	kfree(nrg);  in region_del()