sys/dmu_tx.h File Reference

#include <sys/dmu.h>
#include <sys/txg.h>
#include <sys/refcount.h>

Include dependency graph for dmu_tx.h:

This graph shows which files directly or indirectly include this file:

Go to the source code of this file.

Data Structures
struct	dmu_tx
	No synchronization is needed because a tx can only be handled by one thread. More...
struct	dmu_tx_hold
struct	dmu_tx_callback
Defines
#define	DMU_TX_DIRTY_BUF(tx, db)
Typedefs
typedef struct dmu_tx_hold	dmu_tx_hold_t
typedef struct dmu_tx_callback	dmu_tx_callback_t
Enumerations
enum	dmu_tx_hold_type {   THT_NEWOBJECT, THT_WRITE, THT_BONUS, THT_FREE,   THT_ZAP, THT_SPACE, THT_SPILL, THT_NUMTYPES }
Functions
dmu_tx_t *	dmu_tx_create (objset_t *dd)
int	dmu_tx_assign (dmu_tx_t *tx, uint64_t txg_how)
	Assign tx to a transaction group.
void	dmu_tx_commit (dmu_tx_t *tx)
void	dmu_tx_abort (dmu_tx_t *tx)
uint64_t	dmu_tx_get_txg (dmu_tx_t *tx)
	Return the txg number for the given assigned transaction.
void	dmu_tx_wait (dmu_tx_t *tx)
void	dmu_tx_do_callbacks (list_t *cb_list, int error)
	Call all the commit callbacks on a list, with a given error code.
dmu_tx_t *	dmu_tx_create_assigned (struct dsl_pool *dp, uint64_t txg)
dmu_tx_t *	dmu_tx_create_dd (dsl_dir_t *dd)
int	dmu_tx_is_syncing (dmu_tx_t *tx)
int	dmu_tx_private_ok (dmu_tx_t *tx)
void	dmu_tx_add_new_object (dmu_tx_t *tx, objset_t *os, uint64_t object)
void	dmu_tx_willuse_space (dmu_tx_t *tx, int64_t delta)
void	dmu_tx_dirty_buf (dmu_tx_t *tx, struct dmu_buf_impl *db)
int	dmu_tx_holds (dmu_tx_t *tx, uint64_t object)
void	dmu_tx_hold_space (dmu_tx_t *tx, uint64_t space)

---

Define Documentation

#define DMU_TX_DIRTY_BUF	(		tx,
			db
	)

Definition at line 138 of file dmu_tx.h.

---

Typedef Documentation

typedef struct dmu_tx_callback dmu_tx_callback_t

typedef struct dmu_tx_hold dmu_tx_hold_t

---

Enumeration Type Documentation

enum dmu_tx_hold_type

Enumerator:

THT_NEWOBJECT
THT_WRITE
THT_BONUS
THT_FREE
THT_ZAP
THT_SPACE
THT_SPILL
THT_NUMTYPES

Definition at line 72 of file dmu_tx.h.

---

Function Documentation

void dmu_tx_abort

(

dmu_tx_t *

tx

)

Definition at line 1191 of file dmu_tx.c.

void dmu_tx_add_new_object	(	dmu_tx_t *	tx,
		objset_t *	os,
		uint64_t	object
	)

Definition at line 141 of file dmu_tx.c.

int dmu_tx_assign	(	dmu_tx_t *	tx,
		uint64_t	txg_how
	)

Assign tx to a transaction group.

txg_how can be one of:

1. TXG_WAIT. If the current open txg is full, waits until there's a new one. This should be used when you're not holding locks. If will only fail if we're truly out of space (or over quota).
2. TXG_NOWAIT. If we can't assign into the current open txg without blocking, returns immediately with ERESTART. This should be used whenever you're holding locks. On an ERESTART error, the caller should drop locks, do a dmu_tx_wait(tx), and try again.
3. A specific txg. Use this if you need to ensure that multiple transactions all sync in the same txg. Like TXG_NOWAIT, it returns ERESTART if it can't assign you into the requested txg.

Definition at line 1072 of file dmu_tx.c.

void dmu_tx_commit

(

dmu_tx_t *

tx

)

Definition at line 1139 of file dmu_tx.c.

dmu_tx_t* dmu_tx_create

(

objset_t *

dd

)

Definition at line 65 of file dmu_tx.c.

dmu_tx_t* dmu_tx_create_assigned	(	struct dsl_pool *	dp,
		uint64_t	txg
	)

Definition at line 74 of file dmu_tx.c.

dmu_tx_t* dmu_tx_create_dd

(

dsl_dir_t *

dd

)

Definition at line 47 of file dmu_tx.c.

void dmu_tx_dirty_buf	(	dmu_tx_t *	tx,
		struct dmu_buf_impl *	db
	)

void dmu_tx_do_callbacks	(	list_t *	cb_list,
		int	error
	)

Call all the commit callbacks on a list, with a given error code.

Definition at line 1247 of file dmu_tx.c.

uint64_t dmu_tx_get_txg

(

dmu_tx_t *

tx

)

Return the txg number for the given assigned transaction.

Definition at line 1224 of file dmu_tx.c.

void dmu_tx_hold_space	(	dmu_tx_t *	tx,
		uint64_t	space
	)

Definition at line 762 of file dmu_tx.c.

int dmu_tx_holds	(	dmu_tx_t *	tx,
		uint64_t	object
	)

Definition at line 774 of file dmu_tx.c.

int dmu_tx_is_syncing

(

dmu_tx_t *

tx

)

Definition at line 87 of file dmu_tx.c.

int dmu_tx_private_ok

(

dmu_tx_t *

tx

)

Definition at line 93 of file dmu_tx.c.

void dmu_tx_wait

(

dmu_tx_t *

tx

)

Definition at line 1095 of file dmu_tx.c.

void dmu_tx_willuse_space	(	dmu_tx_t *	tx,
		int64_t	delta
	)

Definition at line 1122 of file dmu_tx.c.