37 static inline void page_counter_init(struct page_counter *counter,  in page_counter_init()  argument
40 	atomic_long_set(&counter->usage, 0);  in page_counter_init()
41 	counter->max = PAGE_COUNTER_MAX;  in page_counter_init()
42 	counter->parent = parent;  in page_counter_init()
45 static inline unsigned long page_counter_read(struct page_counter *counter)  in page_counter_read()  argument
47 	return atomic_long_read(&counter->usage);  in page_counter_read()
50 void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages);
51 void page_counter_charge(struct page_counter *counter, unsigned long nr_pages);
52 bool page_counter_try_charge(struct page_counter *counter,
55 void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages);
56 void page_counter_set_min(struct page_counter *counter, unsigned long nr_pages);
57 void page_counter_set_low(struct page_counter *counter, unsigned long nr_pages);
58 int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages);
62 static inline void page_counter_reset_watermark(struct page_counter *counter)  in page_counter_reset_watermark()  argument
64 	counter->watermark = page_counter_read(counter);  in page_counter_reset_watermark()