9 struct page_counter {  struct
14 	struct page_counter *parent;  argument
37 static inline void page_counter_init(struct page_counter *counter,  in page_counter_init()  argument
38 				     struct page_counter *parent)  in page_counter_init()
45 static inline unsigned long page_counter_read(struct page_counter *counter)  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,
54 			     struct page_counter **fail);
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()