dm-block-manager.c File Reference

#include "dm-block-manager.h"
#include "dm-persistent-data-internal.h"
#include "../dm-bufio.h"
#include <linux/crc32c.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/rwsem.h>
#include <linux/device-mapper.h>
#include <linux/stacktrace.h>

Go to the source code of this file.

Data Structures
struct	block_lock
struct	waiter
struct	buffer_aux
struct	dm_block_manager

Macros
#define	DM_MSG_PREFIX   "block manager"
#define	MAX_HOLDERS   4
#define	MAX_STACK   10

Typedefs
typedef unsigned long	stack_entries [MAX_STACK]

Functions
dm_block_t	dm_block_location (struct dm_block *b)
	EXPORT_SYMBOL_GPL (dm_block_location)
void *	dm_block_data (struct dm_block *b)
	EXPORT_SYMBOL_GPL (dm_block_data)
struct dm_block_manager *	dm_block_manager_create (struct block_device *bdev, unsigned block_size, unsigned cache_size, unsigned max_held_per_thread)
	EXPORT_SYMBOL_GPL (dm_block_manager_create)
void	dm_block_manager_destroy (struct dm_block_manager *bm)
	EXPORT_SYMBOL_GPL (dm_block_manager_destroy)
unsigned	dm_bm_block_size (struct dm_block_manager *bm)
	EXPORT_SYMBOL_GPL (dm_bm_block_size)
dm_block_t	dm_bm_nr_blocks (struct dm_block_manager *bm)
int	dm_bm_read_lock (struct dm_block_manager *bm, dm_block_t b, struct dm_block_validator *v, struct dm_block **result)
	EXPORT_SYMBOL_GPL (dm_bm_read_lock)
int	dm_bm_write_lock (struct dm_block_manager *bm, dm_block_t b, struct dm_block_validator *v, struct dm_block **result)
	EXPORT_SYMBOL_GPL (dm_bm_write_lock)
int	dm_bm_read_try_lock (struct dm_block_manager *bm, dm_block_t b, struct dm_block_validator *v, struct dm_block **result)
int	dm_bm_write_lock_zero (struct dm_block_manager *bm, dm_block_t b, struct dm_block_validator *v, struct dm_block **result)
	EXPORT_SYMBOL_GPL (dm_bm_write_lock_zero)
int	dm_bm_unlock (struct dm_block *b)
	EXPORT_SYMBOL_GPL (dm_bm_unlock)
int	dm_bm_flush_and_unlock (struct dm_block_manager *bm, struct dm_block *superblock)
void	dm_bm_set_read_only (struct dm_block_manager *bm)
	EXPORT_SYMBOL_GPL (dm_bm_set_read_only)
u32	dm_bm_checksum (const void *data, size_t len, u32 init_xor)
	EXPORT_SYMBOL_GPL (dm_bm_checksum)
	MODULE_LICENSE ("GPL")
	MODULE_AUTHOR ("Joe Thornber <[email protected]>")
	MODULE_DESCRIPTION ("Immutable metadata library for dm")

Macro Definition Documentation

#define DM_MSG_PREFIX   "block manager"

Definition at line 17 of file dm-block-manager.c.

#define MAX_HOLDERS   4

Definition at line 32 of file dm-block-manager.c.

#define MAX_STACK   10

Definition at line 33 of file dm-block-manager.c.

Typedef Documentation

typedef unsigned long stack_entries[MAX_STACK]

Definition at line 35 of file dm-block-manager.c.

Function Documentation

void* dm_block_data

(

struct dm_block *

b

)

Definition at line 334 of file dm-block-manager.c.

dm_block_t dm_block_location

(

struct dm_block *

b

)

Definition at line 328 of file dm-block-manager.c.

struct dm_block_manager* dm_block_manager_create ( struct block_device *  bdev, unsigned  block_size, unsigned  cache_size, unsigned  max_held_per_thread  )

read

Definition at line 370 of file dm-block-manager.c.

void dm_block_manager_destroy

(

struct dm_block_manager *

bm

)

Definition at line 403 of file dm-block-manager.c.

unsigned dm_bm_block_size

(

struct dm_block_manager *

bm

)

Definition at line 410 of file dm-block-manager.c.

u32 dm_bm_checksum	(	const void *	data,
		size_t	len,
		u32	init_xor
	)

Definition at line 621 of file dm-block-manager.c.

int dm_bm_flush_and_unlock	(	struct dm_block_manager *	bm,
		struct dm_block *	superblock
	)

Definition at line 596 of file dm-block-manager.c.

dm_block_t dm_bm_nr_blocks

(

struct dm_block_manager *

bm

)

Definition at line 416 of file dm-block-manager.c.

int dm_bm_read_lock	(	struct dm_block_manager *	bm,
		dm_block_t	b,
		struct dm_block_validator *	v,
		struct dm_block **	result
	)

Definition at line 446 of file dm-block-manager.c.

int dm_bm_read_try_lock	(	struct dm_block_manager *	bm,
		dm_block_t	b,
		struct dm_block_validator *	v,
		struct dm_block **	result
	)

Definition at line 515 of file dm-block-manager.c.

void dm_bm_set_read_only

(

struct dm_block_manager *

bm

)

Definition at line 615 of file dm-block-manager.c.

int dm_bm_unlock

(

struct dm_block *

b

)

Definition at line 579 of file dm-block-manager.c.

int dm_bm_write_lock	(	struct dm_block_manager *	bm,
		dm_block_t	b,
		struct dm_block_validator *	v,
		struct dm_block **	result
	)

Definition at line 479 of file dm-block-manager.c.

int dm_bm_write_lock_zero	(	struct dm_block_manager *	bm,
		dm_block_t	b,
		struct dm_block_validator *	v,
		struct dm_block **	result
	)

Definition at line 548 of file dm-block-manager.c.

EXPORT_SYMBOL_GPL

(

dm_block_location

)

EXPORT_SYMBOL_GPL

(

dm_block_data

)

EXPORT_SYMBOL_GPL

(

dm_block_manager_create

)

EXPORT_SYMBOL_GPL

(

dm_block_manager_destroy

)

EXPORT_SYMBOL_GPL

(

dm_bm_block_size

)

EXPORT_SYMBOL_GPL

(

dm_bm_read_lock

)

EXPORT_SYMBOL_GPL

(

dm_bm_write_lock

)

EXPORT_SYMBOL_GPL

(

dm_bm_write_lock_zero

)

EXPORT_SYMBOL_GPL

(

dm_bm_unlock

)

EXPORT_SYMBOL_GPL

(

dm_bm_set_read_only

)

EXPORT_SYMBOL_GPL

(

dm_bm_checksum

)

MODULE_AUTHOR

(

"Joe Thornber <[email protected]>"

)

MODULE_DESCRIPTION

(

"Immutable metadata library for dm"

)

MODULE_LICENSE

(

"GPL"

)