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Release 4.12 include/linux/page_counter.h

Directory: include/linux
#ifndef _LINUX_PAGE_COUNTER_H

#define _LINUX_PAGE_COUNTER_H

#include <linux/atomic.h>
#include <linux/kernel.h>
#include <asm/page.h>


struct page_counter {
	
atomic_long_t count;
	
unsigned long limit;
	
struct page_counter *parent;

	/* legacy */
	
unsigned long watermark;
	
unsigned long failcnt;
};

#if BITS_PER_LONG == 32

#define PAGE_COUNTER_MAX LONG_MAX
#else

#define PAGE_COUNTER_MAX (LONG_MAX / PAGE_SIZE)
#endif


static inline void page_counter_init(struct page_counter *counter, struct page_counter *parent) { atomic_long_set(&counter->count, 0); counter->limit = PAGE_COUNTER_MAX; counter->parent = parent; }

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PersonTokensPropCommitsCommitProp
Johannes Weiner39100.00%1100.00%
Total39100.00%1100.00%


static inline unsigned long page_counter_read(struct page_counter *counter) { return atomic_long_read(&counter->count); }

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PersonTokensPropCommitsCommitProp
Johannes Weiner22100.00%1100.00%
Total22100.00%1100.00%

void page_counter_cancel(struct page_counter *counter, unsigned long nr_pages); void page_counter_charge(struct page_counter *counter, unsigned long nr_pages); bool page_counter_try_charge(struct page_counter *counter, unsigned long nr_pages, struct page_counter **fail); void page_counter_uncharge(struct page_counter *counter, unsigned long nr_pages); int page_counter_limit(struct page_counter *counter, unsigned long limit); int page_counter_memparse(const char *buf, const char *max, unsigned long *nr_pages);
static inline void page_counter_reset_watermark(struct page_counter *counter) { counter->watermark = page_counter_read(counter); }

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PersonTokensPropCommitsCommitProp
Johannes Weiner21100.00%1100.00%
Total21100.00%1100.00%

#endif /* _LINUX_PAGE_COUNTER_H */

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PersonTokensPropCommitsCommitProp
Johannes Weiner233100.00%4100.00%
Total233100.00%4100.00%
Directory: include/linux
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