zbud.c File Reference

#include <linux/module.h>
#include <linux/highmem.h>
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/pagemap.h>
#include <linux/atomic.h>
#include <linux/bug.h>
#include "tmem.h"
#include "zcache.h"
#include "zbud.h"

Go to the source code of this file.

Data Structures
struct	zbudpage
struct	zbudref
struct	zbud_unbuddied

Macros
#define	CHUNK_SHIFT   6
#define	CHUNK_SIZE   (1 << CHUNK_SHIFT)
#define	CHUNK_MASK   (~(CHUNK_SIZE-1))
#define	NCHUNKS   (PAGE_SIZE >> CHUNK_SHIFT)
#define	MAX_CHUNK   (NCHUNKS-1)

Functions
unsigned int	zbud_max_buddy_size (void)
struct page *	zbud_free_and_delist (struct zbudref *zref, bool eph, unsigned int *zsize, unsigned int *zpages)
struct zbudref *	zbud_match_prep (struct tmem_handle *th, bool eph, void *cdata, unsigned size)
struct zbudref *	zbud_create_prep (struct tmem_handle *th, bool eph, void *cdata, unsigned size, struct page *newpage)
void	zbud_create_finish (struct zbudref *zref, bool eph)
int	zbud_decompress (struct page *data_page, struct zbudref *zref, bool eph, void(*decompress)(char *, unsigned int, char *))
int	zbud_copy_from_zbud (char *to_va, struct zbudref *zref, size_t *sizep, bool eph)
int	zbud_copy_to_zbud (struct zbudref *zref, char *from_va, bool eph)
struct page *	zbud_evict_pageframe_lru (unsigned int *zsize, unsigned int *zpages)
unsigned int	zbud_make_zombie_lru (struct tmem_handle *th, unsigned char **data, unsigned int *zsize, bool eph)
void __init	zbud_init (void)

Macro Definition Documentation

#define CHUNK_MASK   (~(CHUNK_SIZE-1))

Definition at line 125 of file zbud.c.

#define CHUNK_SHIFT   6

Definition at line 123 of file zbud.c.

#define CHUNK_SIZE   (1 << CHUNK_SHIFT)

Definition at line 124 of file zbud.c.

#define MAX_CHUNK   (NCHUNKS-1)

Definition at line 127 of file zbud.c.

#define NCHUNKS   (PAGE_SIZE >> CHUNK_SHIFT)

Definition at line 126 of file zbud.c.

Function Documentation

int zbud_copy_from_zbud	(	char *	to_va,
		struct zbudref *	zref,
		size_t *	sizep,
		bool	eph
	)

Definition at line 803 of file zbud.c.

int zbud_copy_to_zbud	(	struct zbudref *	zref,
		char *	from_va,
		bool	eph
	)

Definition at line 845 of file zbud.c.

void zbud_create_finish	(	struct zbudref *	zref,
		bool	eph
	)

Definition at line 741 of file zbud.c.

struct zbudref* zbud_create_prep ( struct tmem_handle *  th, bool  eph, void *  cdata, unsigned  size, struct page *  newpage  )

read

Definition at line 692 of file zbud.c.

int zbud_decompress	(	struct page *	data_page,
		struct zbudref *	zref,
		bool	eph,
		void(*)(char *, unsigned int, char *)	decompress
	)

Definition at line 761 of file zbud.c.

struct page* zbud_evict_pageframe_lru ( unsigned int *  zsize, unsigned int *  zpages  )

read

Definition at line 887 of file zbud.c.

struct page* zbud_free_and_delist ( struct zbudref *  zref, bool  eph, unsigned int *  zsize, unsigned int *  zpages  )

read

Definition at line 539 of file zbud.c.

void __init zbud_init

(

void

)

Definition at line 1047 of file zbud.c.

unsigned int zbud_make_zombie_lru	(	struct tmem_handle *	th,
		unsigned char **	data,
		unsigned int *	zsize,
		bool	eph
	)

Definition at line 975 of file zbud.c.

struct zbudref* zbud_match_prep ( struct tmem_handle *  th, bool  eph, void *  cdata, unsigned  size  )

read

Definition at line 622 of file zbud.c.

unsigned int zbud_max_buddy_size

(

void

)

Definition at line 529 of file zbud.c.