linux-master/mm/hugetlb.c

466 static void record_hugetlb_cgroup_uncharge_info(struct hugetlb_cgroup *h_cg,
472 	if (h_cg) {
474 			&h_cg->rsvd_hugepage[hstate_index(h)];
475 		nrg->css = &h_cg->css;
477 		 * The caller will hold exactly one h_cg->css reference for the
482 		 * exactly one h_cg->css reference, we should do css_get for
486 		css_get(&h_cg->css);
574 				     struct hugetlb_cgroup *h_cg,
615 						    iter->from, h, h_cg,
628 					    t, h, h_cg, regions_needed);
708 		       struct hugetlb_cgroup *h_cg)
745 	add = add_reservation_in_range(resv, f, t, h_cg, h, NULL);
1066 					  struct hugetlb_cgroup *h_cg,
1070 	if (!h_cg || !h) {
1076 			&h_cg->rsvd_hugepage[hstate_index(h)];
1078 		resv_map->css = &h_cg->css;
3141 	struct hugetlb_cgroup *h_cg = NULL;
3196 			idx, pages_per_huge_page(h), &h_cg);
3201 	ret = hugetlb_cgroup_charge_cgroup(idx, pages_per_huge_page(h), &h_cg);
3227 	hugetlb_cgroup_commit_charge(idx, pages_per_huge_page(h), h_cg, folio);
3233 						  h_cg, folio);
3270 	hugetlb_cgroup_uncharge_cgroup(idx, pages_per_huge_page(h), h_cg);
3274 						    h_cg);
7104 	struct hugetlb_cgroup *h_cg = NULL;
7158 				chg * pages_per_huge_page(h), &h_cg) < 0)
7161 	if (vma && !(vma->vm_flags & VM_MAYSHARE) && h_cg) {
7165 		resv_map_set_hugetlb_cgroup_uncharge_info(resv_map, h_cg, h);
7196 		add = region_add(resv_map, from, to, regions_needed, h, h_cg);
7213 			 * reference to h_cg->css. See comment below for detail.
7217 				(chg - add) * pages_per_huge_page(h), h_cg);
7222 		} else if (h_cg) {
7225 			 * h_cg->css. So we should release the reference held
7229 			hugetlb_cgroup_put_rsvd_cgroup(h_cg);
7239 					    chg * pages_per_huge_page(h), h_cg);