#include <sys/spa.h>
#include <sys/arc.h>
#include <sys/txg.h>
#include <sys/zfs_context.h>
#include <sys/dnode.h>
#include <sys/zio.h>
#include <sys/zil.h>
#include <sys/sa.h>
#include <sys/zil.h>
#include <sys/sa.h>

Include dependency graph for dmu_objset.h:

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

Go to the source code of this file.

Data Structures
struct	objset_phys
struct	objset
Defines
#define	OBJSET_PHYS_SIZE 2048
#define	OBJSET_OLD_PHYS_SIZE 1024
#define	OBJSET_BUF_HAS_USERUSED(buf) (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)
#define	OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
#define	DMU_META_OBJSET 0
#define	DMU_META_DNODE_OBJECT 0
#define	DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0)
#define	DMU_META_DNODE(os) ((os)->os_meta_dnode.dnh_dnode)
#define	DMU_USERUSED_DNODE(os) ((os)->os_userused_dnode.dnh_dnode)
#define	DMU_GROUPUSED_DNODE(os) ((os)->os_groupused_dnode.dnh_dnode)
#define	DMU_OS_IS_L2CACHEABLE(os)
Typedefs
typedef struct objset_phys	objset_phys_t
Functions
int	dmu_objset_hold (const char name, void tag, objset_t **osp)
int	dmu_objset_own (const char name, dmu_objset_type_t type, boolean_t readonly, void tag, objset_t **osp)
void	dmu_objset_rele (objset_t os, void tag)
void	dmu_objset_disown (objset_t os, void tag)
int	dmu_objset_from_ds (struct dsl_dataset ds, objset_t *osp)
int	dmu_objset_create (const char name, dmu_objset_type_t type, uint64_t flags, void(func)(objset_t os, void arg, cred_t cr, dmu_tx_t tx), void *arg)
int	dmu_objset_clone (const char name, struct dsl_dataset clone_origin, uint64_t flags)
int	dmu_objset_destroy (const char *name, boolean_t defer)
int	dmu_objset_snapshot (char fsname, char snapname, char tag, struct nvlist props, boolean_t recursive, boolean_t temporary, int fd)
void	dmu_objset_stats (objset_t os, nvlist_t nv)
void	dmu_objset_fast_stat (objset_t os, dmu_objset_stats_t stat)
	Get stats on a dataset.
void	dmu_objset_space (objset_t os, uint64_t refdbytesp, uint64_t availbytesp, uint64_t usedobjsp, uint64_t *availobjsp)
	Get the space usage statistics for statvfs().
uint64_t	dmu_objset_fsid_guid (objset_t *os)
	The fsid_guid is a 56-bit ID that can change to avoid collisions.
int	dmu_objset_find (const char name, int func(const char , void ), void arg, int flags)
	Find all objsets under name, and for each, call 'func(child_name, arg)'.
int	dmu_objset_find_spa (spa_t spa, const char name, int func(spa_t , uint64_t, const char , void ), void arg, int flags)
	Find all objsets under name, call func on each.
int	dmu_objset_prefetch (const char name, void arg)
void	dmu_objset_byteswap (void *buf, size_t size)
int	dmu_objset_evict_dbufs (objset_t *os)
timestruc_t	dmu_objset_snap_cmtime (objset_t *os)
void	dmu_objset_sync (objset_t os, zio_t zio, dmu_tx_t *tx)
boolean_t	dmu_objset_is_dirty (objset_t *os, uint64_t txg)
objset_t *	dmu_objset_create_impl (spa_t spa, struct dsl_dataset ds, blkptr_t bp, dmu_objset_type_t type, dmu_tx_t tx)
int	dmu_objset_open_impl (spa_t spa, struct dsl_dataset ds, blkptr_t bp, objset_t *osp)
void	dmu_objset_evict (objset_t *os)
void	dmu_objset_do_userquota_updates (objset_t os, dmu_tx_t tx)
void	dmu_objset_userquota_get_ids (dnode_t dn, boolean_t before, dmu_tx_t tx)
boolean_t	dmu_objset_userused_enabled (objset_t *os)
int	dmu_objset_userspace_upgrade (objset_t *os)
boolean_t	dmu_objset_userspace_present (objset_t *os)
void	dmu_objset_init (void)
void	dmu_objset_fini (void)
Variables
krwlock_t	os_lock
	Needed to close a window in dnode_move() that allows the objset to be freed before it can be safely accessed.

Define Documentation

#define DMU_GROUPUSED_DNODE ( os ) ((os)->os_groupused_dnode.dnh_dnode)

Definition at line 147 of file dmu_objset.h.

#define DMU_META_DNODE ( os ) ((os)->os_meta_dnode.dnh_dnode)

Definition at line 145 of file dmu_objset.h.

#define DMU_META_DNODE_OBJECT 0

Definition at line 143 of file dmu_objset.h.

#define DMU_META_OBJSET 0

Definition at line 142 of file dmu_objset.h.

#define DMU_OBJECT_IS_SPECIAL ( obj ) ((int64_t)(obj) <= 0)

Definition at line 144 of file dmu_objset.h.

#define DMU_OS_IS_L2CACHEABLE ( os )

Value:

((os)->os_secondary_cache == ZFS_CACHE_ALL ||           \
        (os)->os_secondary_cache == ZFS_CACHE_METADATA)

Definition at line 149 of file dmu_objset.h.

#define DMU_USERUSED_DNODE ( os ) ((os)->os_userused_dnode.dnh_dnode)

Definition at line 146 of file dmu_objset.h.

#define OBJSET_BUF_HAS_USERUSED ( buf ) (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)

Definition at line 51 of file dmu_objset.h.

#define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)

Definition at line 54 of file dmu_objset.h.

#define OBJSET_OLD_PHYS_SIZE 1024

Definition at line 49 of file dmu_objset.h.

#define OBJSET_PHYS_SIZE 2048

Definition at line 48 of file dmu_objset.h.

Typedef Documentation

typedef struct objset_phys objset_phys_t

Function Documentation

void dmu_objset_byteswap	(	void *	buf,
		size_t	size
	)

Definition at line 241 of file dmu_objset.c.

int dmu_objset_clone	(	const char *	name,
		struct dsl_dataset *	clone_origin,
		uint64_t	flags
	)

Definition at line 760 of file dmu_objset.c.

int dmu_objset_create	(	const char *	name,
		dmu_objset_type_t	type,
		uint64_t	flags,
		void()(objset_t os, void arg, cred_t cr, dmu_tx_t *tx)	func,
		void *	arg
	)

Definition at line 729 of file dmu_objset.c.

objset_t* dmu_objset_create_impl	(	spa_t *	spa,
		struct dsl_dataset *	ds,
		blkptr_t *	bp,
		dmu_objset_type_t	type,
		dmu_tx_t *	tx
	)

Definition at line 599 of file dmu_objset.c.

int dmu_objset_destroy	(	const char *	name,
		boolean_t	defer
	)

Definition at line 788 of file dmu_objset.c.

void dmu_objset_disown	(	objset_t *	os,
		void *	tag
	)

Definition at line 482 of file dmu_objset.c.

void dmu_objset_do_userquota_updates	(	objset_t *	os,
		dmu_tx_t *	tx
	)

Definition at line 1222 of file dmu_objset.c.

void dmu_objset_evict ( objset_t * os )

Definition at line 528 of file dmu_objset.c.

int dmu_objset_evict_dbufs ( objset_t * os )

Definition at line 488 of file dmu_objset.c.

void dmu_objset_fast_stat	(	objset_t *	os,
		dmu_objset_stats_t *	stat
	)

Get stats on a dataset.

Definition at line 1498 of file dmu_objset.c.

int dmu_objset_find	(	const char *	name,
		int	funcconst char , void ,
		void *	arg,
		int	flags
	)

Find all objsets under name, and for each, call 'func(child_name, arg)'.

Todo:: Perhaps change all callers to use dmu_objset_find_spa()?

Definition at line 1637 of file dmu_objset.c.

int dmu_objset_find_spa	(	spa_t *	spa,
		const char *	name,
		int	funcspa_t , uint64_t, const char , void *,
		void *	arg,
		int	flags
	)

Find all objsets under name, call func on each.

Definition at line 1650 of file dmu_objset.c.

void dmu_objset_fini ( void )

Definition at line 60 of file dmu_objset.c.

int dmu_objset_from_ds	(	struct dsl_dataset *	ds,
		objset_t **	osp
	)

Definition at line 418 of file dmu_objset.c.

uint64_t dmu_objset_fsid_guid ( objset_t * os )

The fsid_guid is a 56-bit ID that can change to avoid collisions.

(Contrast with the ds_guid which is a 64-bit ID that will never change, so there is a small probability that it will collide.)

Definition at line 1492 of file dmu_objset.c.

int dmu_objset_hold	(	const char *	name,
		void *	tag,
		objset_t **	osp
	)

Definition at line 434 of file dmu_objset.c.

void dmu_objset_init ( void )

Definition at line 54 of file dmu_objset.c.

boolean_t dmu_objset_is_dirty	(	objset_t *	os,
		uint64_t	txg
	)

Definition at line 1184 of file dmu_objset.c.

int dmu_objset_open_impl	(	spa_t *	spa,
		struct dsl_dataset *	ds,
		blkptr_t *	bp,
		objset_t **	osp
	)

Definition at line 257 of file dmu_objset.c.

int dmu_objset_own	(	const char *	name,
		dmu_objset_type_t	type,
		boolean_t	readonly,
		void *	tag,
		objset_t **	osp
	)

Definition at line 452 of file dmu_objset.c.

int dmu_objset_prefetch	(	const char *	name,
		void *	arg
	)

Definition at line 1752 of file dmu_objset.c.

void dmu_objset_rele	(	objset_t *	os,
		void *	tag
	)

Definition at line 476 of file dmu_objset.c.

timestruc_t dmu_objset_snap_cmtime ( objset_t * os )

Definition at line 592 of file dmu_objset.c.

int dmu_objset_snapshot	(	char *	fsname,
		char *	snapname,
		char *	tag,
		struct nvlist *	props,
		boolean_t	recursive,
		boolean_t	temporary,
		int	fd
	)

void dmu_objset_space	(	objset_t *	os,
		uint64_t *	refdbytesp,
		uint64_t *	availbytesp,
		uint64_t *	usedobjsp,
		uint64_t *	availobjsp
	)

Get the space usage statistics for statvfs().

refdbytes is the amount of space "referenced" by this objset. availbytes is the amount of space available to this objset, taking into account quotas & reservations, assuming that no other objsets use the space first. These values correspond to the 'referenced' and 'available' properties, described in the zfs(1m) manpage.

usedobjs and availobjs are the number of objects currently allocated, and available.

Definition at line 1484 of file dmu_objset.c.

void dmu_objset_stats	(	objset_t *	os,
		nvlist_t *	nv
	)

Definition at line 1506 of file dmu_objset.c.

void dmu_objset_sync	(	objset_t *	os,
		zio_t *	zio,
		dmu_tx_t *	tx
	)

Definition at line 1096 of file dmu_objset.c.

void dmu_objset_userquota_get_ids	(	dnode_t *	dn,
		boolean_t	before,
		dmu_tx_t *	tx
	)

Definition at line 1327 of file dmu_objset.c.

boolean_t dmu_objset_userspace_present ( objset_t * os )

Definition at line 1428 of file dmu_objset.c.

int dmu_objset_userspace_upgrade ( objset_t * os )

Definition at line 1435 of file dmu_objset.c.

boolean_t dmu_objset_userused_enabled ( objset_t * os )

Definition at line 1199 of file dmu_objset.c.

Variable Documentation

krwlock_t os_lock

Needed to close a window in dnode_move() that allows the objset to be freed before it can be safely accessed.

Definition at line 51 of file dmu_objset.c.

sys/dmu_objset.h File Reference

Data Structures

Defines

Typedefs

Functions

Variables

Define Documentation

Typedef Documentation

Function Documentation

Variable Documentation