55 static inline void page_counter_init(struct page_counter *counter,  in page_counter_init()  argument
59 	counter->usage = (atomic_long_t)ATOMIC_LONG_INIT(0);  in page_counter_init()
60 	counter->max = PAGE_COUNTER_MAX;  in page_counter_init()
61 	counter->parent = parent;  in page_counter_init()
62 	counter->protection_support = protection_support;  in page_counter_init()
63 	counter->track_failcnt = false;  in page_counter_init()
66 static inline unsigned long page_counter_read(struct page_counter *counter)  in page_counter_read()  argument
68 	return atomic_long_read(&counter->usage);  in page_counter_read()
71 void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages);
72 void page_counter_charge(struct page_counter *counter, unsigned long nr_pages);
73 bool page_counter_try_charge(struct page_counter *counter,
76 void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages);
77 void page_counter_set_min(struct page_counter *counter, unsigned long nr_pages);
78 void page_counter_set_low(struct page_counter *counter, unsigned long nr_pages);
80 static inline void page_counter_set_high(struct page_counter *counter,  in page_counter_set_high()  argument
83 	WRITE_ONCE(counter->high, nr_pages);  in page_counter_set_high()
86 int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages);
90 static inline void page_counter_reset_watermark(struct page_counter *counter)  in page_counter_reset_watermark()  argument
92 	unsigned long usage = page_counter_read(counter);  in page_counter_reset_watermark()
98 	counter->local_watermark = usage;  in page_counter_reset_watermark()
99 	counter->watermark = usage;  in page_counter_reset_watermark()
104 				       struct page_counter *counter,
108 						     struct page_counter *counter,  in page_counter_calculate_protection()  argument