16 static void propagate_protected_usage(struct page_counter *c,  in propagate_protected_usage()  argument
22 	if (!c->parent)  in propagate_protected_usage()
25 	if (c->min || atomic_long_read(&c->min_usage)) {  in propagate_protected_usage()
26 		if (usage <= c->min)  in propagate_protected_usage()
31 		old_protected = atomic_long_xchg(&c->min_usage, protected);  in propagate_protected_usage()
34 			atomic_long_add(delta, &c->parent->children_min_usage);  in propagate_protected_usage()
37 	if (c->low || atomic_long_read(&c->low_usage)) {  in propagate_protected_usage()
38 		if (usage <= c->low)  in propagate_protected_usage()
43 		old_protected = atomic_long_xchg(&c->low_usage, protected);  in propagate_protected_usage()
46 			atomic_long_add(delta, &c->parent->children_low_usage);  in propagate_protected_usage()
74 	struct page_counter *c;  in page_counter_charge()  local
76 	for (c = counter; c; c = c->parent) {  in page_counter_charge()
79 		new = atomic_long_add_return(nr_pages, &c->usage);  in page_counter_charge()
85 		if (new > c->watermark)  in page_counter_charge()
86 			c->watermark = new;  in page_counter_charge()
103 	struct page_counter *c;  in page_counter_try_charge()  local
105 	for (c = counter; c; c = c->parent) {  in page_counter_try_charge()
121 		new = atomic_long_add_return(nr_pages, &c->usage);  in page_counter_try_charge()
122 		if (new > c->max) {  in page_counter_try_charge()
123 			atomic_long_sub(nr_pages, &c->usage);  in page_counter_try_charge()
129 			c->failcnt++;  in page_counter_try_charge()
130 			*fail = c;  in page_counter_try_charge()
138 		if (new > c->watermark)  in page_counter_try_charge()
139 			c->watermark = new;  in page_counter_try_charge()
144 	for (c = counter; c != *fail; c = c->parent)  in page_counter_try_charge()
145 		page_counter_cancel(c, nr_pages);  in page_counter_try_charge()
157 	struct page_counter *c;  in page_counter_uncharge()  local
159 	for (c = counter; c; c = c->parent)  in page_counter_uncharge()
160 		page_counter_cancel(c, nr_pages);  in page_counter_uncharge()
214 	struct page_counter *c;  in page_counter_set_min()  local
218 	for (c = counter; c; c = c->parent)  in page_counter_set_min()
219 		propagate_protected_usage(c, atomic_long_read(&c->usage));  in page_counter_set_min()
231 	struct page_counter *c;  in page_counter_set_low()  local
235 	for (c = counter; c; c = c->parent)  in page_counter_set_low()
236 		propagate_protected_usage(c, atomic_long_read(&c->usage));  in page_counter_set_low()