56 	long new;  in page_counter_cancel()  local
58 	new = atomic_long_sub_return(nr_pages, &counter->usage);  in page_counter_cancel()
60 	if (WARN_ONCE(new < 0, "page_counter underflow: %ld nr_pages=%lu\n",  in page_counter_cancel()
61 		      new, nr_pages)) {  in page_counter_cancel()
62 		new = 0;  in page_counter_cancel()
63 		atomic_long_set(&counter->usage, new);  in page_counter_cancel()
66 		propagate_protected_usage(counter, new);  in page_counter_cancel()
82 		long new;  in page_counter_charge()  local
84 		new = atomic_long_add_return(nr_pages, &c->usage);  in page_counter_charge()
86 			propagate_protected_usage(c, new);  in page_counter_charge()
101 		if (new > READ_ONCE(c->local_watermark)) {  in page_counter_charge()
102 			WRITE_ONCE(c->local_watermark, new);  in page_counter_charge()
103 			if (new > READ_ONCE(c->watermark))  in page_counter_charge()
104 				WRITE_ONCE(c->watermark, new);  in page_counter_charge()
127 		long new;  in page_counter_try_charge()  local
142 		new = atomic_long_add_return(nr_pages, &c->usage);  in page_counter_try_charge()
143 		if (new > c->max) {  in page_counter_try_charge()
156 			propagate_protected_usage(c, new);  in page_counter_try_charge()
159 		if (new > READ_ONCE(c->local_watermark)) {  in page_counter_try_charge()
160 			WRITE_ONCE(c->local_watermark, new);  in page_counter_try_charge()
161 			if (new > READ_ONCE(c->watermark))  in page_counter_try_charge()
162 				WRITE_ONCE(c->watermark, new);  in page_counter_try_charge()