[mirror_zfs.git] / include / sys / dsl_dir.h

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License (the "License").
 * You may not use this file except in compliance with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or https://opensource.org/licenses/CDDL-1.0.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
 * Copyright (c) 2012, 2018 by Delphix. All rights reserved.
 * Copyright (c) 2014, Joyent, Inc. All rights reserved.
 * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
 */

#ifndef	_SYS_DSL_DIR_H
#define	_SYS_DSL_DIR_H

#include <sys/dmu.h>
#include <sys/dsl_deadlist.h>
#include <sys/dsl_pool.h>
#include <sys/dsl_synctask.h>
#include <sys/zfs_refcount.h>
#include <sys/zfs_context.h>
#include <sys/dsl_crypt.h>
#include <sys/bplist.h>

#ifdef	__cplusplus
extern "C" {
#endif

struct dsl_dataset;
struct zthr;
/*
 * DD_FIELD_* are strings that are used in the "extensified" dsl_dir zap object.
 * They should be of the format <reverse-dns>:<field>.
 */

#define	DD_FIELD_FILESYSTEM_COUNT	"com.joyent:filesystem_count"
#define	DD_FIELD_SNAPSHOT_COUNT		"com.joyent:snapshot_count"
#define	DD_FIELD_CRYPTO_KEY_OBJ		"com.datto:crypto_key_obj"
#define	DD_FIELD_LIVELIST		"com.delphix:livelist"
#define	DD_FIELD_SNAPSHOTS_CHANGED	"com.ixsystems:snapshots_changed"

typedef enum dd_used {
	DD_USED_HEAD,
	DD_USED_SNAP,
	DD_USED_CHILD,
	DD_USED_CHILD_RSRV,
	DD_USED_REFRSRV,
	DD_USED_NUM
} dd_used_t;

#define	DD_FLAG_USED_BREAKDOWN (1<<0)

typedef struct dsl_dir_phys {
	uint64_t dd_creation_time; /* not actually used */
	uint64_t dd_head_dataset_obj;
	uint64_t dd_parent_obj;
	uint64_t dd_origin_obj;
	uint64_t dd_child_dir_zapobj;
	/*
	 * how much space our children are accounting for; for leaf
	 * datasets, == physical space used by fs + snaps
	 */
	uint64_t dd_used_bytes;
	uint64_t dd_compressed_bytes;
	uint64_t dd_uncompressed_bytes;
	/* Administrative quota setting */
	uint64_t dd_quota;
	/* Administrative reservation setting */
	uint64_t dd_reserved;
	uint64_t dd_props_zapobj;
	uint64_t dd_deleg_zapobj; /* dataset delegation permissions */
	uint64_t dd_flags;
	uint64_t dd_used_breakdown[DD_USED_NUM];
	uint64_t dd_clones; /* dsl_dir objects */
	uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */
} dsl_dir_phys_t;

struct dsl_dir {
	dmu_buf_user_t dd_dbu;

	/* These are immutable; no lock needed: */
	uint64_t dd_object;
	uint64_t dd_crypto_obj;
	dsl_pool_t *dd_pool;

	/* Stable until user eviction; no lock needed: */
	dmu_buf_t *dd_dbuf;

	/* protected by lock on pool's dp_dirty_dirs list */
	txg_node_t dd_dirty_link;

	/* protected by dp_config_rwlock */
	dsl_dir_t *dd_parent;

	/* Protected by dd_lock */
	kmutex_t dd_lock;
	list_t dd_props; /* list of dsl_prop_record_t's */
	inode_timespec_t dd_snap_cmtime; /* last snapshot namespace change */
	uint64_t dd_origin_txg;

	/* gross estimate of space used by in-flight tx's */
	uint64_t dd_tempreserved[TXG_SIZE];
	/* amount of space we expect to write; == amount of dirty data */
	int64_t dd_space_towrite[TXG_SIZE];

	dsl_deadlist_t dd_livelist;
	bplist_t dd_pending_frees;
	bplist_t dd_pending_allocs;

	kmutex_t dd_activity_lock;
	kcondvar_t dd_activity_cv;
	boolean_t dd_activity_cancelled;
	uint64_t dd_activity_waiters;

	/* protected by dd_lock; keep at end of struct for better locality */
	char dd_myname[ZFS_MAX_DATASET_NAME_LEN];
};

static inline dsl_dir_phys_t *
dsl_dir_phys(dsl_dir_t *dd)
{
	return (dd->dd_dbuf->db_data);
}

void dsl_dir_rele(dsl_dir_t *dd, const void *tag);
void dsl_dir_async_rele(dsl_dir_t *dd, const void *tag);
int dsl_dir_hold(dsl_pool_t *dp, const char *name, const void *tag,
    dsl_dir_t **, const char **tail);
int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj,
    const char *tail, const void *tag, dsl_dir_t **);
void dsl_dir_name(dsl_dir_t *dd, char *buf);
int dsl_dir_namelen(dsl_dir_t *dd);
uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds,
    const char *name, dmu_tx_t *tx);

uint64_t dsl_dir_get_used(dsl_dir_t *dd);
uint64_t dsl_dir_get_compressed(dsl_dir_t *dd);
uint64_t dsl_dir_get_quota(dsl_dir_t *dd);
uint64_t dsl_dir_get_reservation(dsl_dir_t *dd);
uint64_t dsl_dir_get_compressratio(dsl_dir_t *dd);
uint64_t dsl_dir_get_logicalused(dsl_dir_t *dd);
uint64_t dsl_dir_get_usedsnap(dsl_dir_t *dd);
uint64_t dsl_dir_get_usedds(dsl_dir_t *dd);
uint64_t dsl_dir_get_usedrefreserv(dsl_dir_t *dd);
uint64_t dsl_dir_get_usedchild(dsl_dir_t *dd);
void dsl_dir_get_origin(dsl_dir_t *dd, char *buf);
int dsl_dir_get_filesystem_count(dsl_dir_t *dd, uint64_t *count);
int dsl_dir_get_snapshot_count(dsl_dir_t *dd, uint64_t *count);

void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv);
uint64_t dsl_dir_space_available(dsl_dir_t *dd,
    dsl_dir_t *ancestor, int64_t delta, int ondiskonly);
void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx);
void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx);
int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
    uint64_t asize, boolean_t netfree, void **tr_cookiep, dmu_tx_t *tx);
void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx);
void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx);
void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type,
    int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx);
void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta,
    dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx);
void dsl_dir_diduse_transfer_space(dsl_dir_t *dd, int64_t used,
    int64_t compressed, int64_t uncompressed, int64_t tonew,
    dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx);
int dsl_dir_set_quota(const char *ddname, zprop_source_t source,
    uint64_t quota);
int dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
    uint64_t reservation);
int dsl_dir_activate_fs_ss_limit(const char *);
int dsl_fs_ss_limit_check(dsl_dir_t *, uint64_t, zfs_prop_t, dsl_dir_t *,
    cred_t *, proc_t *);
void dsl_fs_ss_count_adjust(dsl_dir_t *, int64_t, const char *, dmu_tx_t *);
int dsl_dir_rename(const char *oldname, const char *newname);
int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd,
    uint64_t fs_cnt, uint64_t ss_cnt, uint64_t space, cred_t *, proc_t *);
boolean_t dsl_dir_is_clone(dsl_dir_t *dd);
void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds,
    uint64_t reservation, cred_t *cr, dmu_tx_t *tx);
void dsl_dir_snap_cmtime_update(dsl_dir_t *dd, dmu_tx_t *tx);
inode_timespec_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value,
    dmu_tx_t *tx);
void dsl_dir_zapify(dsl_dir_t *dd, dmu_tx_t *tx);
boolean_t dsl_dir_is_zapified(dsl_dir_t *dd);
void dsl_dir_livelist_open(dsl_dir_t *dd, uint64_t obj);
void dsl_dir_livelist_close(dsl_dir_t *dd);
void dsl_dir_remove_livelist(dsl_dir_t *dd, dmu_tx_t *tx, boolean_t total);
int dsl_dir_wait(dsl_dir_t *dd, dsl_dataset_t *ds, zfs_wait_activity_t activity,
    boolean_t *waited);
void dsl_dir_cancel_waiters(dsl_dir_t *dd);

/* internal reserved dir name */
#define	MOS_DIR_NAME "$MOS"
#define	ORIGIN_DIR_NAME "$ORIGIN"
#define	FREE_DIR_NAME "$FREE"
#define	LEAK_DIR_NAME "$LEAK"

#ifdef ZFS_DEBUG
#define	dprintf_dd(dd, fmt, ...) do { \
	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
	char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
	dsl_dir_name(dd, __ds_name); \
	dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \
	kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
	} \
} while (0)
#else
#define	dprintf_dd(dd, fmt, ...)
#endif

#ifdef	__cplusplus
}
#endif

#endif /* _SYS_DSL_DIR_H */
Commit	Line	Data
34dc7c2f BB	1	/*
	2	* CDDL HEADER START
	3	*
	4	* The contents of this file are subject to the terms of the
	5	* Common Development and Distribution License (the "License").
	6	* You may not use this file except in compliance with the License.
	7	*
	8	* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
1d3ba0bf	9	* or https://opensource.org/licenses/CDDL-1.0.
34dc7c2f BB	10	* See the License for the specific language governing permissions
	11	* and limitations under the License.
	12	*
	13	* When distributing Covered Code, include this CDDL HEADER in each
	14	* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
	15	* If applicable, add the following below this CDDL HEADER, with the
	16	* fields enclosed by brackets "[]" replaced with your own identifying
	17	* information: Portions Copyright [yyyy] [name of copyright owner]
	18	*
	19	* CDDL HEADER END
	20	*/
	21	/*
428870ff	22	* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
37f03da8	23	* Copyright (c) 2012, 2018 by Delphix. All rights reserved.
788eb90c	24	* Copyright (c) 2014, Joyent, Inc. All rights reserved.
0c66c32d	25	* Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
34dc7c2f BB	26	*/
	27
	28	#ifndef _SYS_DSL_DIR_H
	29	#define _SYS_DSL_DIR_H
	30
34dc7c2f	31	#include <sys/dmu.h>
37f03da8	32	#include <sys/dsl_deadlist.h>
34dc7c2f BB	33	#include <sys/dsl_pool.h>
34dc7c2f BB	34	#include <sys/dsl_synctask.h>
27d96d22	35	#include <sys/zfs_refcount.h>
34dc7c2f	36	#include <sys/zfs_context.h>
b5256303	37	#include <sys/dsl_crypt.h>
37f03da8	38	#include <sys/bplist.h>
34dc7c2f BB	39
	40	#ifdef __cplusplus
	41	extern "C" {
	42	#endif
	43
	44	struct dsl_dataset;
37f03da8	45	struct zthr;
788eb90c JJ	46	/*
	47	* DD_FIELD_* are strings that are used in the "extensified" dsl_dir zap object.
	48	* They should be of the format <reverse-dns>:<field>.
	49	*/
	50
	51	#define DD_FIELD_FILESYSTEM_COUNT "com.joyent:filesystem_count"
	52	#define DD_FIELD_SNAPSHOT_COUNT "com.joyent:snapshot_count"
b5256303	53	#define DD_FIELD_CRYPTO_KEY_OBJ "com.datto:crypto_key_obj"
37f03da8	54	#define DD_FIELD_LIVELIST "com.delphix:livelist"
59767479	55	#define DD_FIELD_SNAPSHOTS_CHANGED "com.ixsystems:snapshots_changed"
788eb90c	56
b128c09f BB	57	typedef enum dd_used {
	58	DD_USED_HEAD,
	59	DD_USED_SNAP,
	60	DD_USED_CHILD,
	61	DD_USED_CHILD_RSRV,
	62	DD_USED_REFRSRV,
	63	DD_USED_NUM
	64	} dd_used_t;
	65
	66	#define DD_FLAG_USED_BREAKDOWN (1<<0)
	67
34dc7c2f BB	68	typedef struct dsl_dir_phys {
	69	uint64_t dd_creation_time; /* not actually used */
	70	uint64_t dd_head_dataset_obj;
	71	uint64_t dd_parent_obj;
	72	uint64_t dd_origin_obj;
	73	uint64_t dd_child_dir_zapobj;
	74	/*
	75	* how much space our children are accounting for; for leaf
	76	* datasets, == physical space used by fs + snaps
	77	*/
	78	uint64_t dd_used_bytes;
	79	uint64_t dd_compressed_bytes;
	80	uint64_t dd_uncompressed_bytes;
	81	/* Administrative quota setting */
	82	uint64_t dd_quota;
	83	/* Administrative reservation setting */
	84	uint64_t dd_reserved;
	85	uint64_t dd_props_zapobj;
	86	uint64_t dd_deleg_zapobj; /* dataset delegation permissions */
b128c09f BB	87	uint64_t dd_flags;
b128c09f BB	88	uint64_t dd_used_breakdown[DD_USED_NUM];
428870ff BB	89	uint64_t dd_clones; /* dsl_dir objects */
428870ff BB	90	uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */
34dc7c2f BB	91	} dsl_dir_phys_t;
	92
	93	struct dsl_dir {
0c66c32d JG	94	dmu_buf_user_t dd_dbu;
0c66c32d JG	95
34dc7c2f BB	96	/* These are immutable; no lock needed: */
34dc7c2f BB	97	uint64_t dd_object;
b5256303	98	uint64_t dd_crypto_obj;
34dc7c2f BB	99	dsl_pool_t *dd_pool;
34dc7c2f BB	100
d683ddbb JG	101	/* Stable until user eviction; no lock needed: */
	102	dmu_buf_t *dd_dbuf;
	103
34dc7c2f BB	104	/* protected by lock on pool's dp_dirty_dirs list */
	105	txg_node_t dd_dirty_link;
	106
	107	/* protected by dp_config_rwlock */
	108	dsl_dir_t *dd_parent;
	109
	110	/* Protected by dd_lock */
	111	kmutex_t dd_lock;
0eb21616	112	list_t dd_props; /* list of dsl_prop_record_t's */
6413c95f	113	inode_timespec_t dd_snap_cmtime; /* last snapshot namespace change */
428870ff	114	uint64_t dd_origin_txg;
34dc7c2f	115
34dc7c2f BB	116	/* gross estimate of space used by in-flight tx's */
	117	uint64_t dd_tempreserved[TXG_SIZE];
	118	/* amount of space we expect to write; == amount of dirty data */
	119	int64_t dd_space_towrite[TXG_SIZE];
	120
37f03da8 SH	121	dsl_deadlist_t dd_livelist;
	122	bplist_t dd_pending_frees;
	123	bplist_t dd_pending_allocs;
	124
5a42ef04 PD	125	kmutex_t dd_activity_lock;
	126	kcondvar_t dd_activity_cv;
	127	boolean_t dd_activity_cancelled;
	128	uint64_t dd_activity_waiters;
	129
34dc7c2f	130	/* protected by dd_lock; keep at end of struct for better locality */
eca7b760	131	char dd_myname[ZFS_MAX_DATASET_NAME_LEN];
34dc7c2f BB	132	};
34dc7c2f BB	133
d683ddbb JG	134	static inline dsl_dir_phys_t *
	135	dsl_dir_phys(dsl_dir_t *dd)
	136	{
	137	return (dd->dd_dbuf->db_data);
	138	}
	139
dd66857d AZ	140	void dsl_dir_rele(dsl_dir_t dd, const void tag);
	141	void dsl_dir_async_rele(dsl_dir_t dd, const void tag);
	142	int dsl_dir_hold(dsl_pool_t dp, const char name, const void *tag,
13fe0198 MA	143	dsl_dir_t , const char tail);
13fe0198 MA	144	int dsl_dir_hold_obj(dsl_pool_t *dp, uint64_t ddobj,
dd66857d	145	const char tail, const void tag, dsl_dir_t **);
34dc7c2f BB	146	void dsl_dir_name(dsl_dir_t dd, char buf);
34dc7c2f BB	147	int dsl_dir_namelen(dsl_dir_t *dd);
b128c09f BB	148	uint64_t dsl_dir_create_sync(dsl_pool_t dp, dsl_dir_t pds,
b128c09f BB	149	const char name, dmu_tx_t tx);
d99a0153 CW	150
d99a0153 CW	151	uint64_t dsl_dir_get_used(dsl_dir_t *dd);
d2734cce	152	uint64_t dsl_dir_get_compressed(dsl_dir_t *dd);
d99a0153 CW	153	uint64_t dsl_dir_get_quota(dsl_dir_t *dd);
	154	uint64_t dsl_dir_get_reservation(dsl_dir_t *dd);
	155	uint64_t dsl_dir_get_compressratio(dsl_dir_t *dd);
	156	uint64_t dsl_dir_get_logicalused(dsl_dir_t *dd);
	157	uint64_t dsl_dir_get_usedsnap(dsl_dir_t *dd);
	158	uint64_t dsl_dir_get_usedds(dsl_dir_t *dd);
	159	uint64_t dsl_dir_get_usedrefreserv(dsl_dir_t *dd);
	160	uint64_t dsl_dir_get_usedchild(dsl_dir_t *dd);
	161	void dsl_dir_get_origin(dsl_dir_t dd, char buf);
	162	int dsl_dir_get_filesystem_count(dsl_dir_t dd, uint64_t count);
	163	int dsl_dir_get_snapshot_count(dsl_dir_t dd, uint64_t count);
	164
34dc7c2f BB	165	void dsl_dir_stats(dsl_dir_t dd, nvlist_t nv);
	166	uint64_t dsl_dir_space_available(dsl_dir_t *dd,
	167	dsl_dir_t *ancestor, int64_t delta, int ondiskonly);
	168	void dsl_dir_dirty(dsl_dir_t dd, dmu_tx_t tx);
	169	void dsl_dir_sync(dsl_dir_t dd, dmu_tx_t tx);
	170	int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
3ec3bc21	171	uint64_t asize, boolean_t netfree, void *tr_cookiep, dmu_tx_t tx);
34dc7c2f BB	172	void dsl_dir_tempreserve_clear(void tr_cookie, dmu_tx_t tx);
34dc7c2f BB	173	void dsl_dir_willuse_space(dsl_dir_t dd, int64_t space, dmu_tx_t tx);
b128c09f	174	void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type,
34dc7c2f	175	int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx);
b128c09f BB	176	void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta,
b128c09f BB	177	dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx);
c1b5869b AM	178	void dsl_dir_diduse_transfer_space(dsl_dir_t *dd, int64_t used,
	179	int64_t compressed, int64_t uncompressed, int64_t tonew,
	180	dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx);
428870ff BB	181	int dsl_dir_set_quota(const char *ddname, zprop_source_t source,
	182	uint64_t quota);
	183	int dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
	184	uint64_t reservation);
788eb90c JJ	185	int dsl_dir_activate_fs_ss_limit(const char *);
788eb90c JJ	186	int dsl_fs_ss_limit_check(dsl_dir_t , uint64_t, zfs_prop_t, dsl_dir_t ,
e59a377a	187	cred_t , proc_t );
788eb90c	188	void dsl_fs_ss_count_adjust(dsl_dir_t , int64_t, const char , dmu_tx_t *);
13fe0198	189	int dsl_dir_rename(const char oldname, const char newname);
788eb90c	190	int dsl_dir_transfer_possible(dsl_dir_t sdd, dsl_dir_t tdd,
e59a377a	191	uint64_t fs_cnt, uint64_t ss_cnt, uint64_t space, cred_t , proc_t );
b128c09f BB	192	boolean_t dsl_dir_is_clone(dsl_dir_t *dd);
	193	void dsl_dir_new_refreservation(dsl_dir_t dd, struct dsl_dataset ds,
	194	uint64_t reservation, cred_t cr, dmu_tx_t tx);
9681de46	195	void dsl_dir_snap_cmtime_update(dsl_dir_t dd, dmu_tx_t tx);
6413c95f	196	inode_timespec_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
13fe0198 MA	197	void dsl_dir_set_reservation_sync_impl(dsl_dir_t *dd, uint64_t value,
13fe0198 MA	198	dmu_tx_t *tx);
788eb90c JJ	199	void dsl_dir_zapify(dsl_dir_t dd, dmu_tx_t tx);
788eb90c JJ	200	boolean_t dsl_dir_is_zapified(dsl_dir_t *dd);
37f03da8 SH	201	void dsl_dir_livelist_open(dsl_dir_t *dd, uint64_t obj);
	202	void dsl_dir_livelist_close(dsl_dir_t *dd);
	203	void dsl_dir_remove_livelist(dsl_dir_t dd, dmu_tx_t tx, boolean_t total);
5a42ef04 PD	204	int dsl_dir_wait(dsl_dir_t dd, dsl_dataset_t ds, zfs_wait_activity_t activity,
	205	boolean_t *waited);
	206	void dsl_dir_cancel_waiters(dsl_dir_t *dd);
34dc7c2f BB	207
	208	/* internal reserved dir name */
	209	#define MOS_DIR_NAME "$MOS"
b128c09f	210	#define ORIGIN_DIR_NAME "$ORIGIN"
428870ff	211	#define FREE_DIR_NAME "$FREE"
fbeddd60	212	#define LEAK_DIR_NAME "$LEAK"
34dc7c2f BB	213
	214	#ifdef ZFS_DEBUG
	215	#define dprintf_dd(dd, fmt, ...) do { \
	216	if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
eca7b760	217	char *__ds_name = kmem_alloc(ZFS_MAX_DATASET_NAME_LEN, KM_SLEEP); \
34dc7c2f BB	218	dsl_dir_name(dd, __ds_name); \
34dc7c2f BB	219	dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \
eca7b760	220	kmem_free(__ds_name, ZFS_MAX_DATASET_NAME_LEN); \
34dc7c2f	221	} \
037af3e0	222	} while (0)
34dc7c2f BB	223	#else
	224	#define dprintf_dd(dd, fmt, ...)
	225	#endif
	226
	227	#ifdef __cplusplus
	228	}
	229	#endif
	230
	231	#endif /* _SYS_DSL_DIR_H */