6928 static inline void uncharge_gather_clear(struct uncharge_gather *ug)  in uncharge_gather_clear()  argument
6930 	memset(ug, 0, sizeof(*ug));  in uncharge_gather_clear()
6933 static void uncharge_batch(const struct uncharge_gather *ug)  in uncharge_batch()  argument
6937 	if (!mem_cgroup_is_root(ug->memcg)) {  in uncharge_batch()
6938 		page_counter_uncharge(&ug->memcg->memory, ug->nr_pages);  in uncharge_batch()
6940 			page_counter_uncharge(&ug->memcg->memsw, ug->nr_pages);  in uncharge_batch()
6941 		if (!cgroup_subsys_on_dfl(memory_cgrp_subsys) && ug->nr_kmem)  in uncharge_batch()
6942 			page_counter_uncharge(&ug->memcg->kmem, ug->nr_kmem);  in uncharge_batch()
6943 		memcg_oom_recover(ug->memcg);  in uncharge_batch()
6947 	__count_memcg_events(ug->memcg, PGPGOUT, ug->pgpgout);  in uncharge_batch()
6948 	__this_cpu_add(ug->memcg->vmstats_percpu->nr_page_events, ug->nr_pages);  in uncharge_batch()
6949 	memcg_check_events(ug->memcg, ug->dummy_page);  in uncharge_batch()
6953 	css_put(&ug->memcg->css);  in uncharge_batch()
6956 static void uncharge_page(struct page *page, struct uncharge_gather *ug)  in uncharge_page()  argument
6971 	if (ug->memcg != page->mem_cgroup) {  in uncharge_page()
6972 		if (ug->memcg) {  in uncharge_page()
6973 			uncharge_batch(ug);  in uncharge_page()
6974 			uncharge_gather_clear(ug);  in uncharge_page()
6976 		ug->memcg = page->mem_cgroup;  in uncharge_page()
6979 		css_get(&ug->memcg->css);  in uncharge_page()
6983 	ug->nr_pages += nr_pages;  in uncharge_page()
6986 		ug->pgpgout++;  in uncharge_page()
6988 		ug->nr_kmem += nr_pages;  in uncharge_page()
6992 	ug->dummy_page = page;  in uncharge_page()
6994 	css_put(&ug->memcg->css);  in uncharge_page()
6999 	struct uncharge_gather ug;  in uncharge_list()  local
7002 	uncharge_gather_clear(&ug);  in uncharge_list()
7015 		uncharge_page(page, &ug);  in uncharge_list()
7018 	if (ug.memcg)  in uncharge_list()
7019 		uncharge_batch(&ug);  in uncharge_list()
7030 	struct uncharge_gather ug;  in mem_cgroup_uncharge()  local
7039 	uncharge_gather_clear(&ug);  in mem_cgroup_uncharge()
7040 	uncharge_page(page, &ug);  in mem_cgroup_uncharge()
7041 	uncharge_batch(&ug);  in mem_cgroup_uncharge()