51 	long new;  in page_counter_cancel()  local
53 	new = atomic_long_sub_return(nr_pages, &counter->usage);  in page_counter_cancel()
55 	if (WARN_ONCE(new < 0, "page_counter underflow: %ld nr_pages=%lu\n",  in page_counter_cancel()
56 		      new, nr_pages)) {  in page_counter_cancel()
57 		new = 0;  in page_counter_cancel()
58 		atomic_long_set(&counter->usage, new);  in page_counter_cancel()
60 	propagate_protected_usage(counter, new);  in page_counter_cancel()
75 		long new;  in page_counter_charge()  local
77 		new = atomic_long_add_return(nr_pages, &c->usage);  in page_counter_charge()
78 		propagate_protected_usage(c, new);  in page_counter_charge()
83 		if (new > READ_ONCE(c->watermark))  in page_counter_charge()
84 			WRITE_ONCE(c->watermark, new);  in page_counter_charge()
104 		long new;  in page_counter_try_charge()  local
119 		new = atomic_long_add_return(nr_pages, &c->usage);  in page_counter_try_charge()
120 		if (new > c->max) {  in page_counter_try_charge()
131 		propagate_protected_usage(c, new);  in page_counter_try_charge()
136 		if (new > READ_ONCE(c->watermark))  in page_counter_try_charge()
137 			WRITE_ONCE(c->watermark, new);  in page_counter_try_charge()