53 static inline void page_counter_init(struct page_counter *counter,  in page_counter_init()  argument
57 	counter->usage = (atomic_long_t)ATOMIC_LONG_INIT(0);  in page_counter_init()
58 	counter->max = PAGE_COUNTER_MAX;  in page_counter_init()
59 	counter->parent = parent;  in page_counter_init()
60 	counter->protection_support = protection_support;  in page_counter_init()
63 static inline unsigned long page_counter_read(struct page_counter *counter)  in page_counter_read()  argument
65 	return atomic_long_read(&counter->usage);  in page_counter_read()
68 void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages);
69 void page_counter_charge(struct page_counter *counter, unsigned long nr_pages);
70 bool page_counter_try_charge(struct page_counter *counter,
73 void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages);
74 void page_counter_set_min(struct page_counter *counter, unsigned long nr_pages);
75 void page_counter_set_low(struct page_counter *counter, unsigned long nr_pages);
77 static inline void page_counter_set_high(struct page_counter *counter,  in page_counter_set_high()  argument
80 	WRITE_ONCE(counter->high, nr_pages);  in page_counter_set_high()
83 int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages);
87 static inline void page_counter_reset_watermark(struct page_counter *counter)  in page_counter_reset_watermark()  argument
89 	unsigned long usage = page_counter_read(counter);  in page_counter_reset_watermark()
95 	counter->local_watermark = usage;  in page_counter_reset_watermark()
96 	counter->watermark = usage;  in page_counter_reset_watermark()
101 				       struct page_counter *counter,
105 						     struct page_counter *counter,  in page_counter_calculate_protection()  argument