dm-table.c File Reference

#include "dm.h"
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <linux/blkdev.h>
#include <linux/namei.h>
#include <linux/ctype.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/atomic.h>

Go to the source code of this file.

Data Structures
struct	dm_table

Macros
#define	DM_MSG_PREFIX   "table"
#define	MAX_DEPTH   16
#define	NODE_SIZE   L1_CACHE_BYTES
#define	KEYS_PER_NODE   (NODE_SIZE / sizeof(sector_t))
#define	CHILDREN_PER_NODE   (KEYS_PER_NODE + 1)

Functions
void *	dm_vcalloc (unsigned long nmemb, unsigned long elem_size)
	EXPORT_SYMBOL (dm_vcalloc)
int	dm_table_create (struct dm_table **result, fmode_t mode, unsigned num_targets, struct mapped_device *md)
void	dm_table_destroy (struct dm_table *t)
void	dm_table_get (struct dm_table *t)
	EXPORT_SYMBOL (dm_table_get)
void	dm_table_put (struct dm_table *t)
	EXPORT_SYMBOL (dm_table_put)
int	dm_get_device (struct dm_target *ti, const char *path, fmode_t mode, struct dm_dev **result)
	EXPORT_SYMBOL (dm_get_device)
int	dm_set_device_limits (struct dm_target *ti, struct dm_dev *dev, sector_t start, sector_t len, void *data)
	EXPORT_SYMBOL_GPL (dm_set_device_limits)
void	dm_put_device (struct dm_target *ti, struct dm_dev *d)
	EXPORT_SYMBOL (dm_put_device)
int	dm_split_args (int *argc, char ***argvp, char *input)
int	dm_table_add_target (struct dm_table *t, const char *type, sector_t start, sector_t len, char *params)
int	dm_read_arg (struct dm_arg *arg, struct dm_arg_set *arg_set, unsigned *value, char **error)
	EXPORT_SYMBOL (dm_read_arg)
int	dm_read_arg_group (struct dm_arg *arg, struct dm_arg_set *arg_set, unsigned *value, char **error)
	EXPORT_SYMBOL (dm_read_arg_group)
const char *	dm_shift_arg (struct dm_arg_set *as)
	EXPORT_SYMBOL (dm_shift_arg)
void	dm_consume_args (struct dm_arg_set *as, unsigned num_args)
	EXPORT_SYMBOL (dm_consume_args)
unsigned	dm_table_get_type (struct dm_table *t)
struct target_type *	dm_table_get_immutable_target_type (struct dm_table *t)
bool	dm_table_request_based (struct dm_table *t)
int	dm_table_alloc_md_mempools (struct dm_table *t)
void	dm_table_free_md_mempools (struct dm_table *t)
struct dm_md_mempools *	dm_table_get_md_mempools (struct dm_table *t)
int	dm_table_complete (struct dm_table *t)
void	dm_table_event_callback (struct dm_table *t, void(*fn)(void *), void *context)
void	dm_table_event (struct dm_table *t)
	EXPORT_SYMBOL (dm_table_event)
sector_t	dm_table_get_size (struct dm_table *t)
	EXPORT_SYMBOL (dm_table_get_size)
struct dm_target *	dm_table_get_target (struct dm_table *t, unsigned int index)
struct dm_target *	dm_table_find_target (struct dm_table *t, sector_t sector)
bool	dm_table_has_no_data_devices (struct dm_table *table)
int	dm_calculate_queue_limits (struct dm_table *table, struct queue_limits *limits)
void	dm_table_set_restrictions (struct dm_table *t, struct request_queue *q, struct queue_limits *limits)
unsigned int	dm_table_get_num_targets (struct dm_table *t)
struct list_head *	dm_table_get_devices (struct dm_table *t)
fmode_t	dm_table_get_mode (struct dm_table *t)
	EXPORT_SYMBOL (dm_table_get_mode)
void	dm_table_presuspend_targets (struct dm_table *t)
void	dm_table_postsuspend_targets (struct dm_table *t)
int	dm_table_resume_targets (struct dm_table *t)
void	dm_table_add_target_callbacks (struct dm_table *t, struct dm_target_callbacks *cb)
	EXPORT_SYMBOL_GPL (dm_table_add_target_callbacks)
int	dm_table_any_congested (struct dm_table *t, int bdi_bits)
int	dm_table_any_busy_target (struct dm_table *t)
struct mapped_device *	dm_table_get_md (struct dm_table *t)
	EXPORT_SYMBOL (dm_table_get_md)
bool	dm_table_supports_discards (struct dm_table *t)

Macro Definition Documentation

#define CHILDREN_PER_NODE   (KEYS_PER_NODE + 1)

Definition at line 27 of file dm-table.c.

#define DM_MSG_PREFIX   "table"

Definition at line 22 of file dm-table.c.

#define KEYS_PER_NODE   (NODE_SIZE / sizeof(sector_t))

Definition at line 26 of file dm-table.c.

#define MAX_DEPTH   16

Definition at line 24 of file dm-table.c.

#define NODE_SIZE   L1_CACHE_BYTES

Definition at line 25 of file dm-table.c.

Function Documentation

int dm_calculate_queue_limits	(	struct dm_table *	table,
		struct queue_limits *	limits
	)

Definition at line 1253 of file dm-table.c.

void dm_consume_args	(	struct dm_arg_set *	as,
		unsigned	num_args
	)

Definition at line 888 of file dm-table.c.

int dm_get_device	(	struct dm_target *	ti,
		const char *	path,
		fmode_t	mode,
		struct dm_dev **	result
	)

Definition at line 458 of file dm-table.c.

void dm_put_device	(	struct dm_target *	ti,
		struct dm_dev *	d
	)

Definition at line 555 of file dm-table.c.

int dm_read_arg	(	struct dm_arg *	arg,
		struct dm_arg_set *	arg_set,
		unsigned *	value,
		char **	error
	)

Definition at line 859 of file dm-table.c.

int dm_read_arg_group	(	struct dm_arg *	arg,
		struct dm_arg_set *	arg_set,
		unsigned *	value,
		char **	error
	)

Definition at line 866 of file dm-table.c.

int dm_set_device_limits	(	struct dm_target *	ti,
		struct dm_dev *	dev,
		sector_t	start,
		sector_t	len,
		void *	data
	)

Definition at line 516 of file dm-table.c.

const char* dm_shift_arg

(

struct dm_arg_set *

as

)

Definition at line 873 of file dm-table.c.

int dm_split_args	(	int *	argc,
		char ***	argvp,
		char *	input
	)

Definition at line 604 of file dm-table.c.

int dm_table_add_target	(	struct dm_table *	t,
		const char *	type,
		sector_t	start,
		sector_t	len,
		char *	params
	)

Definition at line 738 of file dm-table.c.

void dm_table_add_target_callbacks	(	struct dm_table *	t,
		struct dm_target_callbacks *	cb
	)

Definition at line 1546 of file dm-table.c.

int dm_table_alloc_md_mempools

(

struct dm_table *

t

)

Definition at line 967 of file dm-table.c.

int dm_table_any_busy_target

(

struct dm_table *

t

)

Definition at line 1578 of file dm-table.c.

int dm_table_any_congested	(	struct dm_table *	t,
		int	bdi_bits
	)

Definition at line 1552 of file dm-table.c.

int dm_table_complete

(

struct dm_table *

t

)

Definition at line 1124 of file dm-table.c.

int dm_table_create	(	struct dm_table **	result,
		fmode_t	mode,
		unsigned	num_targets,
		struct mapped_device *	md
	)

Definition at line 201 of file dm-table.c.

void dm_table_destroy

(

struct dm_table *

t

)

Definition at line 243 of file dm-table.c.

void dm_table_event

(

struct dm_table *

t

)

Definition at line 1163 of file dm-table.c.

void dm_table_event_callback	(	struct dm_table *	t,
		void(*)(void *)	fn,
		void *	context
	)

Definition at line 1154 of file dm-table.c.

struct dm_target* dm_table_find_target ( struct dm_table *  t, sector_t  sector  )

read

Definition at line 1198 of file dm-table.c.

void dm_table_free_md_mempools

(

struct dm_table *

t

)

Definition at line 983 of file dm-table.c.

void dm_table_get

(

struct dm_table *

t

)

Definition at line 278 of file dm-table.c.

struct list_head* dm_table_get_devices ( struct dm_table *  t )

read

Definition at line 1478 of file dm-table.c.

struct target_type* dm_table_get_immutable_target_type ( struct dm_table *  t )

read

Definition at line 957 of file dm-table.c.

struct mapped_device* dm_table_get_md ( struct dm_table *  t )

read

Definition at line 1592 of file dm-table.c.

struct dm_md_mempools* dm_table_get_md_mempools ( struct dm_table *  t )

read

Definition at line 989 of file dm-table.c.

fmode_t dm_table_get_mode

(

struct dm_table *

t

)

Definition at line 1483 of file dm-table.c.

unsigned int dm_table_get_num_targets

(

struct dm_table *

t

)

Definition at line 1473 of file dm-table.c.

sector_t dm_table_get_size

(

struct dm_table *

t

)

Definition at line 1178 of file dm-table.c.

struct dm_target* dm_table_get_target ( struct dm_table *  t, unsigned int  index  )

read

Definition at line 1184 of file dm-table.c.

unsigned dm_table_get_type

(

struct dm_table *

t

)

Definition at line 952 of file dm-table.c.

bool dm_table_has_no_data_devices

(

struct dm_table *

table

)

Definition at line 1231 of file dm-table.c.

void dm_table_postsuspend_targets

(

struct dm_table *

t

)

Definition at line 1513 of file dm-table.c.

void dm_table_presuspend_targets

(

struct dm_table *

t

)

Definition at line 1505 of file dm-table.c.

void dm_table_put

(

struct dm_table *

t

)

Definition at line 284 of file dm-table.c.

bool dm_table_request_based

(

struct dm_table *

t

)

Definition at line 962 of file dm-table.c.

int dm_table_resume_targets

(

struct dm_table *

t

)

Definition at line 1521 of file dm-table.c.

void dm_table_set_restrictions	(	struct dm_table *	t,
		struct request_queue *	q,
		struct queue_limits *	limits
	)

Definition at line 1417 of file dm-table.c.

bool dm_table_supports_discards

(

struct dm_table *

t

)

Definition at line 1606 of file dm-table.c.

void* dm_vcalloc	(	unsigned long	nmemb,
		unsigned long	elem_size
	)

Definition at line 146 of file dm-table.c.

EXPORT_SYMBOL

(

dm_vcalloc

)

EXPORT_SYMBOL

(

dm_table_get

)

EXPORT_SYMBOL

(

dm_table_put

)

EXPORT_SYMBOL

(

dm_get_device

)

EXPORT_SYMBOL

(

dm_put_device

)

EXPORT_SYMBOL

(

dm_read_arg

)

EXPORT_SYMBOL

(

dm_read_arg_group

)

EXPORT_SYMBOL

(

dm_shift_arg

)

EXPORT_SYMBOL

(

dm_consume_args

)

EXPORT_SYMBOL

(

dm_table_event

)

EXPORT_SYMBOL

(

dm_table_get_size

)

EXPORT_SYMBOL

(

dm_table_get_mode

)

EXPORT_SYMBOL

(

dm_table_get_md

)

EXPORT_SYMBOL_GPL

(

dm_set_device_limits

)

EXPORT_SYMBOL_GPL

(

dm_table_add_target_callbacks

)