disable FB

hc

2024-01-04 1543e317f1da31b75942316931e8f491a8920811

 kernel/include/linux/page_counter.h
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@@ -10,6 +10,7 @@
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 	atomic_long_t usage;
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 	unsigned long min;
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 	unsigned long low;
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+	unsigned long high;
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 	unsigned long max;
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 	struct page_counter *parent;
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@@ -55,6 +56,13 @@
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 void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages);
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 void page_counter_set_min(struct page_counter *counter, unsigned long nr_pages);
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 void page_counter_set_low(struct page_counter *counter, unsigned long nr_pages);
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+
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+static inline void page_counter_set_high(struct page_counter *counter,
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+					 unsigned long nr_pages)
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+{
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+	WRITE_ONCE(counter->high, nr_pages);
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+}
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+
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 int page_counter_set_max(struct page_counter *counter, unsigned long nr_pages);
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 int page_counter_memparse(const char *buf, const char *max,
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 			  unsigned long *nr_pages);