xref: /freebsd/sys/contrib/openzfs/module/zfs/dmu_objset.c (revision 2a58b312b62f908ec92311d1bd8536dbaeb8e55b)
1eda14cbcSMatt Macy /*
2eda14cbcSMatt Macy  * CDDL HEADER START
3eda14cbcSMatt Macy  *
4eda14cbcSMatt Macy  * The contents of this file are subject to the terms of the
5eda14cbcSMatt Macy  * Common Development and Distribution License (the "License").
6eda14cbcSMatt Macy  * You may not use this file except in compliance with the License.
7eda14cbcSMatt Macy  *
8eda14cbcSMatt Macy  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9271171e0SMartin Matuska  * or https://opensource.org/licenses/CDDL-1.0.
10eda14cbcSMatt Macy  * See the License for the specific language governing permissions
11eda14cbcSMatt Macy  * and limitations under the License.
12eda14cbcSMatt Macy  *
13eda14cbcSMatt Macy  * When distributing Covered Code, include this CDDL HEADER in each
14eda14cbcSMatt Macy  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15eda14cbcSMatt Macy  * If applicable, add the following below this CDDL HEADER, with the
16eda14cbcSMatt Macy  * fields enclosed by brackets "[]" replaced with your own identifying
17eda14cbcSMatt Macy  * information: Portions Copyright [yyyy] [name of copyright owner]
18eda14cbcSMatt Macy  *
19eda14cbcSMatt Macy  * CDDL HEADER END
20eda14cbcSMatt Macy  */
21eda14cbcSMatt Macy 
22eda14cbcSMatt Macy /*
23eda14cbcSMatt Macy  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
247877fdebSMatt Macy  * Copyright (c) 2012, 2020 by Delphix. All rights reserved.
25eda14cbcSMatt Macy  * Copyright (c) 2013 by Saso Kiselkov. All rights reserved.
26eda14cbcSMatt Macy  * Copyright (c) 2013, Joyent, Inc. All rights reserved.
27eda14cbcSMatt Macy  * Copyright (c) 2014 Spectra Logic Corporation, All rights reserved.
28eda14cbcSMatt Macy  * Copyright (c) 2015, STRATO AG, Inc. All rights reserved.
29eda14cbcSMatt Macy  * Copyright (c) 2016 Actifio, Inc. All rights reserved.
30eda14cbcSMatt Macy  * Copyright 2017 Nexenta Systems, Inc.
31eda14cbcSMatt Macy  * Copyright (c) 2017 Open-E, Inc. All Rights Reserved.
32eda14cbcSMatt Macy  * Copyright (c) 2018, loli10K <ezomori.nozomu@gmail.com>. All rights reserved.
33eda14cbcSMatt Macy  * Copyright (c) 2019, Klara Inc.
34eda14cbcSMatt Macy  * Copyright (c) 2019, Allan Jude
35dbd5678dSMartin Matuska  * Copyright (c) 2022 Hewlett Packard Enterprise Development LP.
36eda14cbcSMatt Macy  */
37eda14cbcSMatt Macy 
38eda14cbcSMatt Macy /* Portions Copyright 2010 Robert Milkowski */
39eda14cbcSMatt Macy 
40eda14cbcSMatt Macy #include <sys/cred.h>
41eda14cbcSMatt Macy #include <sys/zfs_context.h>
42eda14cbcSMatt Macy #include <sys/dmu_objset.h>
43eda14cbcSMatt Macy #include <sys/dsl_dir.h>
44eda14cbcSMatt Macy #include <sys/dsl_dataset.h>
45eda14cbcSMatt Macy #include <sys/dsl_prop.h>
46eda14cbcSMatt Macy #include <sys/dsl_pool.h>
47eda14cbcSMatt Macy #include <sys/dsl_synctask.h>
48eda14cbcSMatt Macy #include <sys/dsl_deleg.h>
49eda14cbcSMatt Macy #include <sys/dnode.h>
50eda14cbcSMatt Macy #include <sys/dbuf.h>
51eda14cbcSMatt Macy #include <sys/zvol.h>
52eda14cbcSMatt Macy #include <sys/dmu_tx.h>
53eda14cbcSMatt Macy #include <sys/zap.h>
54eda14cbcSMatt Macy #include <sys/zil.h>
55eda14cbcSMatt Macy #include <sys/dmu_impl.h>
56eda14cbcSMatt Macy #include <sys/zfs_ioctl.h>
57eda14cbcSMatt Macy #include <sys/sa.h>
58eda14cbcSMatt Macy #include <sys/zfs_onexit.h>
59eda14cbcSMatt Macy #include <sys/dsl_destroy.h>
60eda14cbcSMatt Macy #include <sys/vdev.h>
61eda14cbcSMatt Macy #include <sys/zfeature.h>
62eda14cbcSMatt Macy #include <sys/policy.h>
63eda14cbcSMatt Macy #include <sys/spa_impl.h>
64eda14cbcSMatt Macy #include <sys/dmu_recv.h>
65eda14cbcSMatt Macy #include <sys/zfs_project.h>
66eda14cbcSMatt Macy #include "zfs_namecheck.h"
67dae17134SMartin Matuska #include <sys/vdev_impl.h>
68dae17134SMartin Matuska #include <sys/arc.h>
69eda14cbcSMatt Macy 
70eda14cbcSMatt Macy /*
71eda14cbcSMatt Macy  * Needed to close a window in dnode_move() that allows the objset to be freed
72eda14cbcSMatt Macy  * before it can be safely accessed.
73eda14cbcSMatt Macy  */
74eda14cbcSMatt Macy krwlock_t os_lock;
75eda14cbcSMatt Macy 
76eda14cbcSMatt Macy /*
77eda14cbcSMatt Macy  * Tunable to overwrite the maximum number of threads for the parallelization
78eda14cbcSMatt Macy  * of dmu_objset_find_dp, needed to speed up the import of pools with many
79eda14cbcSMatt Macy  * datasets.
80eda14cbcSMatt Macy  * Default is 4 times the number of leaf vdevs.
81eda14cbcSMatt Macy  */
82e92ffd9bSMartin Matuska static const int dmu_find_threads = 0;
83eda14cbcSMatt Macy 
84eda14cbcSMatt Macy /*
85eda14cbcSMatt Macy  * Backfill lower metadnode objects after this many have been freed.
86eda14cbcSMatt Macy  * Backfilling negatively impacts object creation rates, so only do it
87eda14cbcSMatt Macy  * if there are enough holes to fill.
88eda14cbcSMatt Macy  */
89e92ffd9bSMartin Matuska static const int dmu_rescan_dnode_threshold = 1 << DN_MAX_INDBLKSHIFT;
90eda14cbcSMatt Macy 
91e92ffd9bSMartin Matuska static const char *upgrade_tag = "upgrade_tag";
92eda14cbcSMatt Macy 
93eda14cbcSMatt Macy static void dmu_objset_find_dp_cb(void *arg);
94eda14cbcSMatt Macy 
95eda14cbcSMatt Macy static void dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb);
96eda14cbcSMatt Macy static void dmu_objset_upgrade_stop(objset_t *os);
97eda14cbcSMatt Macy 
98eda14cbcSMatt Macy void
99eda14cbcSMatt Macy dmu_objset_init(void)
100eda14cbcSMatt Macy {
101eda14cbcSMatt Macy 	rw_init(&os_lock, NULL, RW_DEFAULT, NULL);
102eda14cbcSMatt Macy }
103eda14cbcSMatt Macy 
104eda14cbcSMatt Macy void
105eda14cbcSMatt Macy dmu_objset_fini(void)
106eda14cbcSMatt Macy {
107eda14cbcSMatt Macy 	rw_destroy(&os_lock);
108eda14cbcSMatt Macy }
109eda14cbcSMatt Macy 
110eda14cbcSMatt Macy spa_t *
111eda14cbcSMatt Macy dmu_objset_spa(objset_t *os)
112eda14cbcSMatt Macy {
113eda14cbcSMatt Macy 	return (os->os_spa);
114eda14cbcSMatt Macy }
115eda14cbcSMatt Macy 
116eda14cbcSMatt Macy zilog_t *
117eda14cbcSMatt Macy dmu_objset_zil(objset_t *os)
118eda14cbcSMatt Macy {
119eda14cbcSMatt Macy 	return (os->os_zil);
120eda14cbcSMatt Macy }
121eda14cbcSMatt Macy 
122eda14cbcSMatt Macy dsl_pool_t *
123eda14cbcSMatt Macy dmu_objset_pool(objset_t *os)
124eda14cbcSMatt Macy {
125eda14cbcSMatt Macy 	dsl_dataset_t *ds;
126eda14cbcSMatt Macy 
127eda14cbcSMatt Macy 	if ((ds = os->os_dsl_dataset) != NULL && ds->ds_dir)
128eda14cbcSMatt Macy 		return (ds->ds_dir->dd_pool);
129eda14cbcSMatt Macy 	else
130eda14cbcSMatt Macy 		return (spa_get_dsl(os->os_spa));
131eda14cbcSMatt Macy }
132eda14cbcSMatt Macy 
133eda14cbcSMatt Macy dsl_dataset_t *
134eda14cbcSMatt Macy dmu_objset_ds(objset_t *os)
135eda14cbcSMatt Macy {
136eda14cbcSMatt Macy 	return (os->os_dsl_dataset);
137eda14cbcSMatt Macy }
138eda14cbcSMatt Macy 
139eda14cbcSMatt Macy dmu_objset_type_t
140eda14cbcSMatt Macy dmu_objset_type(objset_t *os)
141eda14cbcSMatt Macy {
142eda14cbcSMatt Macy 	return (os->os_phys->os_type);
143eda14cbcSMatt Macy }
144eda14cbcSMatt Macy 
145eda14cbcSMatt Macy void
146eda14cbcSMatt Macy dmu_objset_name(objset_t *os, char *buf)
147eda14cbcSMatt Macy {
148eda14cbcSMatt Macy 	dsl_dataset_name(os->os_dsl_dataset, buf);
149eda14cbcSMatt Macy }
150eda14cbcSMatt Macy 
151eda14cbcSMatt Macy uint64_t
152eda14cbcSMatt Macy dmu_objset_id(objset_t *os)
153eda14cbcSMatt Macy {
154eda14cbcSMatt Macy 	dsl_dataset_t *ds = os->os_dsl_dataset;
155eda14cbcSMatt Macy 
156eda14cbcSMatt Macy 	return (ds ? ds->ds_object : 0);
157eda14cbcSMatt Macy }
158eda14cbcSMatt Macy 
159eda14cbcSMatt Macy uint64_t
160eda14cbcSMatt Macy dmu_objset_dnodesize(objset_t *os)
161eda14cbcSMatt Macy {
162eda14cbcSMatt Macy 	return (os->os_dnodesize);
163eda14cbcSMatt Macy }
164eda14cbcSMatt Macy 
165eda14cbcSMatt Macy zfs_sync_type_t
166eda14cbcSMatt Macy dmu_objset_syncprop(objset_t *os)
167eda14cbcSMatt Macy {
168eda14cbcSMatt Macy 	return (os->os_sync);
169eda14cbcSMatt Macy }
170eda14cbcSMatt Macy 
171eda14cbcSMatt Macy zfs_logbias_op_t
172eda14cbcSMatt Macy dmu_objset_logbias(objset_t *os)
173eda14cbcSMatt Macy {
174eda14cbcSMatt Macy 	return (os->os_logbias);
175eda14cbcSMatt Macy }
176eda14cbcSMatt Macy 
177eda14cbcSMatt Macy static void
178eda14cbcSMatt Macy checksum_changed_cb(void *arg, uint64_t newval)
179eda14cbcSMatt Macy {
180eda14cbcSMatt Macy 	objset_t *os = arg;
181eda14cbcSMatt Macy 
182eda14cbcSMatt Macy 	/*
183eda14cbcSMatt Macy 	 * Inheritance should have been done by now.
184eda14cbcSMatt Macy 	 */
185eda14cbcSMatt Macy 	ASSERT(newval != ZIO_CHECKSUM_INHERIT);
186eda14cbcSMatt Macy 
187eda14cbcSMatt Macy 	os->os_checksum = zio_checksum_select(newval, ZIO_CHECKSUM_ON_VALUE);
188eda14cbcSMatt Macy }
189eda14cbcSMatt Macy 
190eda14cbcSMatt Macy static void
191eda14cbcSMatt Macy compression_changed_cb(void *arg, uint64_t newval)
192eda14cbcSMatt Macy {
193eda14cbcSMatt Macy 	objset_t *os = arg;
194eda14cbcSMatt Macy 
195eda14cbcSMatt Macy 	/*
196eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
197eda14cbcSMatt Macy 	 */
198eda14cbcSMatt Macy 	ASSERT(newval != ZIO_COMPRESS_INHERIT);
199eda14cbcSMatt Macy 
200eda14cbcSMatt Macy 	os->os_compress = zio_compress_select(os->os_spa,
201eda14cbcSMatt Macy 	    ZIO_COMPRESS_ALGO(newval), ZIO_COMPRESS_ON);
202eda14cbcSMatt Macy 	os->os_complevel = zio_complevel_select(os->os_spa, os->os_compress,
203eda14cbcSMatt Macy 	    ZIO_COMPRESS_LEVEL(newval), ZIO_COMPLEVEL_DEFAULT);
204eda14cbcSMatt Macy }
205eda14cbcSMatt Macy 
206eda14cbcSMatt Macy static void
207eda14cbcSMatt Macy copies_changed_cb(void *arg, uint64_t newval)
208eda14cbcSMatt Macy {
209eda14cbcSMatt Macy 	objset_t *os = arg;
210eda14cbcSMatt Macy 
211eda14cbcSMatt Macy 	/*
212eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
213eda14cbcSMatt Macy 	 */
214eda14cbcSMatt Macy 	ASSERT(newval > 0);
215eda14cbcSMatt Macy 	ASSERT(newval <= spa_max_replication(os->os_spa));
216eda14cbcSMatt Macy 
217eda14cbcSMatt Macy 	os->os_copies = newval;
218eda14cbcSMatt Macy }
219eda14cbcSMatt Macy 
220eda14cbcSMatt Macy static void
221eda14cbcSMatt Macy dedup_changed_cb(void *arg, uint64_t newval)
222eda14cbcSMatt Macy {
223eda14cbcSMatt Macy 	objset_t *os = arg;
224eda14cbcSMatt Macy 	spa_t *spa = os->os_spa;
225eda14cbcSMatt Macy 	enum zio_checksum checksum;
226eda14cbcSMatt Macy 
227eda14cbcSMatt Macy 	/*
228eda14cbcSMatt Macy 	 * Inheritance should have been done by now.
229eda14cbcSMatt Macy 	 */
230eda14cbcSMatt Macy 	ASSERT(newval != ZIO_CHECKSUM_INHERIT);
231eda14cbcSMatt Macy 
232eda14cbcSMatt Macy 	checksum = zio_checksum_dedup_select(spa, newval, ZIO_CHECKSUM_OFF);
233eda14cbcSMatt Macy 
234eda14cbcSMatt Macy 	os->os_dedup_checksum = checksum & ZIO_CHECKSUM_MASK;
235eda14cbcSMatt Macy 	os->os_dedup_verify = !!(checksum & ZIO_CHECKSUM_VERIFY);
236eda14cbcSMatt Macy }
237eda14cbcSMatt Macy 
238eda14cbcSMatt Macy static void
239eda14cbcSMatt Macy primary_cache_changed_cb(void *arg, uint64_t newval)
240eda14cbcSMatt Macy {
241eda14cbcSMatt Macy 	objset_t *os = arg;
242eda14cbcSMatt Macy 
243eda14cbcSMatt Macy 	/*
244eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
245eda14cbcSMatt Macy 	 */
246eda14cbcSMatt Macy 	ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE ||
247eda14cbcSMatt Macy 	    newval == ZFS_CACHE_METADATA);
248eda14cbcSMatt Macy 
249eda14cbcSMatt Macy 	os->os_primary_cache = newval;
250eda14cbcSMatt Macy }
251eda14cbcSMatt Macy 
252eda14cbcSMatt Macy static void
253eda14cbcSMatt Macy secondary_cache_changed_cb(void *arg, uint64_t newval)
254eda14cbcSMatt Macy {
255eda14cbcSMatt Macy 	objset_t *os = arg;
256eda14cbcSMatt Macy 
257eda14cbcSMatt Macy 	/*
258eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
259eda14cbcSMatt Macy 	 */
260eda14cbcSMatt Macy 	ASSERT(newval == ZFS_CACHE_ALL || newval == ZFS_CACHE_NONE ||
261eda14cbcSMatt Macy 	    newval == ZFS_CACHE_METADATA);
262eda14cbcSMatt Macy 
263eda14cbcSMatt Macy 	os->os_secondary_cache = newval;
264eda14cbcSMatt Macy }
265eda14cbcSMatt Macy 
266eda14cbcSMatt Macy static void
267eda14cbcSMatt Macy sync_changed_cb(void *arg, uint64_t newval)
268eda14cbcSMatt Macy {
269eda14cbcSMatt Macy 	objset_t *os = arg;
270eda14cbcSMatt Macy 
271eda14cbcSMatt Macy 	/*
272eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
273eda14cbcSMatt Macy 	 */
274eda14cbcSMatt Macy 	ASSERT(newval == ZFS_SYNC_STANDARD || newval == ZFS_SYNC_ALWAYS ||
275eda14cbcSMatt Macy 	    newval == ZFS_SYNC_DISABLED);
276eda14cbcSMatt Macy 
277eda14cbcSMatt Macy 	os->os_sync = newval;
278eda14cbcSMatt Macy 	if (os->os_zil)
279eda14cbcSMatt Macy 		zil_set_sync(os->os_zil, newval);
280eda14cbcSMatt Macy }
281eda14cbcSMatt Macy 
282eda14cbcSMatt Macy static void
283eda14cbcSMatt Macy redundant_metadata_changed_cb(void *arg, uint64_t newval)
284eda14cbcSMatt Macy {
285eda14cbcSMatt Macy 	objset_t *os = arg;
286eda14cbcSMatt Macy 
287eda14cbcSMatt Macy 	/*
288eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
289eda14cbcSMatt Macy 	 */
290eda14cbcSMatt Macy 	ASSERT(newval == ZFS_REDUNDANT_METADATA_ALL ||
291dbd5678dSMartin Matuska 	    newval == ZFS_REDUNDANT_METADATA_MOST ||
292dbd5678dSMartin Matuska 	    newval == ZFS_REDUNDANT_METADATA_SOME ||
293dbd5678dSMartin Matuska 	    newval == ZFS_REDUNDANT_METADATA_NONE);
294eda14cbcSMatt Macy 
295eda14cbcSMatt Macy 	os->os_redundant_metadata = newval;
296eda14cbcSMatt Macy }
297eda14cbcSMatt Macy 
298eda14cbcSMatt Macy static void
299eda14cbcSMatt Macy dnodesize_changed_cb(void *arg, uint64_t newval)
300eda14cbcSMatt Macy {
301eda14cbcSMatt Macy 	objset_t *os = arg;
302eda14cbcSMatt Macy 
303eda14cbcSMatt Macy 	switch (newval) {
304eda14cbcSMatt Macy 	case ZFS_DNSIZE_LEGACY:
305eda14cbcSMatt Macy 		os->os_dnodesize = DNODE_MIN_SIZE;
306eda14cbcSMatt Macy 		break;
307eda14cbcSMatt Macy 	case ZFS_DNSIZE_AUTO:
308eda14cbcSMatt Macy 		/*
309eda14cbcSMatt Macy 		 * Choose a dnode size that will work well for most
310eda14cbcSMatt Macy 		 * workloads if the user specified "auto". Future code
311eda14cbcSMatt Macy 		 * improvements could dynamically select a dnode size
312eda14cbcSMatt Macy 		 * based on observed workload patterns.
313eda14cbcSMatt Macy 		 */
314eda14cbcSMatt Macy 		os->os_dnodesize = DNODE_MIN_SIZE * 2;
315eda14cbcSMatt Macy 		break;
316eda14cbcSMatt Macy 	case ZFS_DNSIZE_1K:
317eda14cbcSMatt Macy 	case ZFS_DNSIZE_2K:
318eda14cbcSMatt Macy 	case ZFS_DNSIZE_4K:
319eda14cbcSMatt Macy 	case ZFS_DNSIZE_8K:
320eda14cbcSMatt Macy 	case ZFS_DNSIZE_16K:
321eda14cbcSMatt Macy 		os->os_dnodesize = newval;
322eda14cbcSMatt Macy 		break;
323eda14cbcSMatt Macy 	}
324eda14cbcSMatt Macy }
325eda14cbcSMatt Macy 
326eda14cbcSMatt Macy static void
327eda14cbcSMatt Macy smallblk_changed_cb(void *arg, uint64_t newval)
328eda14cbcSMatt Macy {
329eda14cbcSMatt Macy 	objset_t *os = arg;
330eda14cbcSMatt Macy 
331eda14cbcSMatt Macy 	/*
332eda14cbcSMatt Macy 	 * Inheritance and range checking should have been done by now.
333eda14cbcSMatt Macy 	 */
334184c1b94SMartin Matuska 	ASSERT(newval <= SPA_MAXBLOCKSIZE);
335eda14cbcSMatt Macy 	ASSERT(ISP2(newval));
336eda14cbcSMatt Macy 
337eda14cbcSMatt Macy 	os->os_zpl_special_smallblock = newval;
338eda14cbcSMatt Macy }
339eda14cbcSMatt Macy 
340eda14cbcSMatt Macy static void
341eda14cbcSMatt Macy logbias_changed_cb(void *arg, uint64_t newval)
342eda14cbcSMatt Macy {
343eda14cbcSMatt Macy 	objset_t *os = arg;
344eda14cbcSMatt Macy 
345eda14cbcSMatt Macy 	ASSERT(newval == ZFS_LOGBIAS_LATENCY ||
346eda14cbcSMatt Macy 	    newval == ZFS_LOGBIAS_THROUGHPUT);
347eda14cbcSMatt Macy 	os->os_logbias = newval;
348eda14cbcSMatt Macy 	if (os->os_zil)
349eda14cbcSMatt Macy 		zil_set_logbias(os->os_zil, newval);
350eda14cbcSMatt Macy }
351eda14cbcSMatt Macy 
352eda14cbcSMatt Macy static void
353eda14cbcSMatt Macy recordsize_changed_cb(void *arg, uint64_t newval)
354eda14cbcSMatt Macy {
355eda14cbcSMatt Macy 	objset_t *os = arg;
356eda14cbcSMatt Macy 
357eda14cbcSMatt Macy 	os->os_recordsize = newval;
358eda14cbcSMatt Macy }
359eda14cbcSMatt Macy 
360eda14cbcSMatt Macy void
361eda14cbcSMatt Macy dmu_objset_byteswap(void *buf, size_t size)
362eda14cbcSMatt Macy {
363eda14cbcSMatt Macy 	objset_phys_t *osp = buf;
364eda14cbcSMatt Macy 
365eda14cbcSMatt Macy 	ASSERT(size == OBJSET_PHYS_SIZE_V1 || size == OBJSET_PHYS_SIZE_V2 ||
366eda14cbcSMatt Macy 	    size == sizeof (objset_phys_t));
367eda14cbcSMatt Macy 	dnode_byteswap(&osp->os_meta_dnode);
368eda14cbcSMatt Macy 	byteswap_uint64_array(&osp->os_zil_header, sizeof (zil_header_t));
369eda14cbcSMatt Macy 	osp->os_type = BSWAP_64(osp->os_type);
370eda14cbcSMatt Macy 	osp->os_flags = BSWAP_64(osp->os_flags);
371eda14cbcSMatt Macy 	if (size >= OBJSET_PHYS_SIZE_V2) {
372eda14cbcSMatt Macy 		dnode_byteswap(&osp->os_userused_dnode);
373eda14cbcSMatt Macy 		dnode_byteswap(&osp->os_groupused_dnode);
374eda14cbcSMatt Macy 		if (size >= sizeof (objset_phys_t))
375eda14cbcSMatt Macy 			dnode_byteswap(&osp->os_projectused_dnode);
376eda14cbcSMatt Macy 	}
377eda14cbcSMatt Macy }
378eda14cbcSMatt Macy 
379eda14cbcSMatt Macy /*
380eda14cbcSMatt Macy  * The hash is a CRC-based hash of the objset_t pointer and the object number.
381eda14cbcSMatt Macy  */
382eda14cbcSMatt Macy static uint64_t
383eda14cbcSMatt Macy dnode_hash(const objset_t *os, uint64_t obj)
384eda14cbcSMatt Macy {
385eda14cbcSMatt Macy 	uintptr_t osv = (uintptr_t)os;
386eda14cbcSMatt Macy 	uint64_t crc = -1ULL;
387eda14cbcSMatt Macy 
388eda14cbcSMatt Macy 	ASSERT(zfs_crc64_table[128] == ZFS_CRC64_POLY);
389eda14cbcSMatt Macy 	/*
390eda14cbcSMatt Macy 	 * The low 6 bits of the pointer don't have much entropy, because
391eda14cbcSMatt Macy 	 * the objset_t is larger than 2^6 bytes long.
392eda14cbcSMatt Macy 	 */
393eda14cbcSMatt Macy 	crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (osv >> 6)) & 0xFF];
394eda14cbcSMatt Macy 	crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 0)) & 0xFF];
395eda14cbcSMatt Macy 	crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 8)) & 0xFF];
396eda14cbcSMatt Macy 	crc = (crc >> 8) ^ zfs_crc64_table[(crc ^ (obj >> 16)) & 0xFF];
397eda14cbcSMatt Macy 
398eda14cbcSMatt Macy 	crc ^= (osv>>14) ^ (obj>>24);
399eda14cbcSMatt Macy 
400eda14cbcSMatt Macy 	return (crc);
401eda14cbcSMatt Macy }
402eda14cbcSMatt Macy 
403eda14cbcSMatt Macy static unsigned int
404eda14cbcSMatt Macy dnode_multilist_index_func(multilist_t *ml, void *obj)
405eda14cbcSMatt Macy {
406eda14cbcSMatt Macy 	dnode_t *dn = obj;
4072617128aSMartin Matuska 
4082617128aSMartin Matuska 	/*
4092617128aSMartin Matuska 	 * The low order bits of the hash value are thought to be
4102617128aSMartin Matuska 	 * distributed evenly. Otherwise, in the case that the multilist
4112617128aSMartin Matuska 	 * has a power of two number of sublists, each sublists' usage
4122617128aSMartin Matuska 	 * would not be evenly distributed. In this context full 64bit
4132617128aSMartin Matuska 	 * division would be a waste of time, so limit it to 32 bits.
4142617128aSMartin Matuska 	 */
4152617128aSMartin Matuska 	return ((unsigned int)dnode_hash(dn->dn_objset, dn->dn_object) %
416eda14cbcSMatt Macy 	    multilist_get_num_sublists(ml));
417eda14cbcSMatt Macy }
418eda14cbcSMatt Macy 
419dae17134SMartin Matuska static inline boolean_t
420dae17134SMartin Matuska dmu_os_is_l2cacheable(objset_t *os)
421dae17134SMartin Matuska {
422*2a58b312SMartin Matuska 	if (os->os_secondary_cache == ZFS_CACHE_ALL ||
423*2a58b312SMartin Matuska 	    os->os_secondary_cache == ZFS_CACHE_METADATA) {
424*2a58b312SMartin Matuska 		if (l2arc_exclude_special == 0)
425*2a58b312SMartin Matuska 			return (B_TRUE);
426dae17134SMartin Matuska 
427*2a58b312SMartin Matuska 		blkptr_t *bp = os->os_rootbp;
428*2a58b312SMartin Matuska 		if (bp == NULL || BP_IS_HOLE(bp))
429*2a58b312SMartin Matuska 			return (B_FALSE);
430dae17134SMartin Matuska 		uint64_t vdev = DVA_GET_VDEV(bp->blk_dva);
431dae17134SMartin Matuska 		vdev_t *rvd = os->os_spa->spa_root_vdev;
432*2a58b312SMartin Matuska 		vdev_t *vd = NULL;
433dae17134SMartin Matuska 
434dae17134SMartin Matuska 		if (vdev < rvd->vdev_children)
435dae17134SMartin Matuska 			vd = rvd->vdev_child[vdev];
436dae17134SMartin Matuska 
437dae17134SMartin Matuska 		if (vd == NULL)
438dae17134SMartin Matuska 			return (B_TRUE);
439dae17134SMartin Matuska 
440*2a58b312SMartin Matuska 		if (vd->vdev_alloc_bias != VDEV_BIAS_SPECIAL &&
441*2a58b312SMartin Matuska 		    vd->vdev_alloc_bias != VDEV_BIAS_DEDUP)
442dae17134SMartin Matuska 			return (B_TRUE);
443dae17134SMartin Matuska 	}
444dae17134SMartin Matuska 	return (B_FALSE);
445dae17134SMartin Matuska }
446dae17134SMartin Matuska 
447eda14cbcSMatt Macy /*
448eda14cbcSMatt Macy  * Instantiates the objset_t in-memory structure corresponding to the
449eda14cbcSMatt Macy  * objset_phys_t that's pointed to by the specified blkptr_t.
450eda14cbcSMatt Macy  */
451eda14cbcSMatt Macy int
452eda14cbcSMatt Macy dmu_objset_open_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
453eda14cbcSMatt Macy     objset_t **osp)
454eda14cbcSMatt Macy {
455eda14cbcSMatt Macy 	objset_t *os;
456eda14cbcSMatt Macy 	int i, err;
457eda14cbcSMatt Macy 
458eda14cbcSMatt Macy 	ASSERT(ds == NULL || MUTEX_HELD(&ds->ds_opening_lock));
459eda14cbcSMatt Macy 	ASSERT(!BP_IS_REDACTED(bp));
460eda14cbcSMatt Macy 
461eda14cbcSMatt Macy 	/*
462eda14cbcSMatt Macy 	 * We need the pool config lock to get properties.
463eda14cbcSMatt Macy 	 */
464eda14cbcSMatt Macy 	ASSERT(ds == NULL || dsl_pool_config_held(ds->ds_dir->dd_pool));
465eda14cbcSMatt Macy 
466eda14cbcSMatt Macy 	/*
467eda14cbcSMatt Macy 	 * The $ORIGIN dataset (if it exists) doesn't have an associated
468eda14cbcSMatt Macy 	 * objset, so there's no reason to open it. The $ORIGIN dataset
469eda14cbcSMatt Macy 	 * will not exist on pools older than SPA_VERSION_ORIGIN.
470eda14cbcSMatt Macy 	 */
471eda14cbcSMatt Macy 	if (ds != NULL && spa_get_dsl(spa) != NULL &&
472eda14cbcSMatt Macy 	    spa_get_dsl(spa)->dp_origin_snap != NULL) {
473eda14cbcSMatt Macy 		ASSERT3P(ds->ds_dir, !=,
474eda14cbcSMatt Macy 		    spa_get_dsl(spa)->dp_origin_snap->ds_dir);
475eda14cbcSMatt Macy 	}
476eda14cbcSMatt Macy 
477eda14cbcSMatt Macy 	os = kmem_zalloc(sizeof (objset_t), KM_SLEEP);
478eda14cbcSMatt Macy 	os->os_dsl_dataset = ds;
479eda14cbcSMatt Macy 	os->os_spa = spa;
480eda14cbcSMatt Macy 	os->os_rootbp = bp;
481eda14cbcSMatt Macy 	if (!BP_IS_HOLE(os->os_rootbp)) {
482eda14cbcSMatt Macy 		arc_flags_t aflags = ARC_FLAG_WAIT;
483eda14cbcSMatt Macy 		zbookmark_phys_t zb;
484eda14cbcSMatt Macy 		int size;
485dbd5678dSMartin Matuska 		zio_flag_t zio_flags = ZIO_FLAG_CANFAIL;
486eda14cbcSMatt Macy 		SET_BOOKMARK(&zb, ds ? ds->ds_object : DMU_META_OBJSET,
487eda14cbcSMatt Macy 		    ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
488eda14cbcSMatt Macy 
489dae17134SMartin Matuska 		if (dmu_os_is_l2cacheable(os))
490eda14cbcSMatt Macy 			aflags |= ARC_FLAG_L2CACHE;
491eda14cbcSMatt Macy 
492eda14cbcSMatt Macy 		if (ds != NULL && ds->ds_dir->dd_crypto_obj != 0) {
493eda14cbcSMatt Macy 			ASSERT3U(BP_GET_COMPRESS(bp), ==, ZIO_COMPRESS_OFF);
494eda14cbcSMatt Macy 			ASSERT(BP_IS_AUTHENTICATED(bp));
495eda14cbcSMatt Macy 			zio_flags |= ZIO_FLAG_RAW;
496eda14cbcSMatt Macy 		}
497eda14cbcSMatt Macy 
498eda14cbcSMatt Macy 		dprintf_bp(os->os_rootbp, "reading %s", "");
499eda14cbcSMatt Macy 		err = arc_read(NULL, spa, os->os_rootbp,
500eda14cbcSMatt Macy 		    arc_getbuf_func, &os->os_phys_buf,
501eda14cbcSMatt Macy 		    ZIO_PRIORITY_SYNC_READ, zio_flags, &aflags, &zb);
502eda14cbcSMatt Macy 		if (err != 0) {
503eda14cbcSMatt Macy 			kmem_free(os, sizeof (objset_t));
504eda14cbcSMatt Macy 			/* convert checksum errors into IO errors */
505eda14cbcSMatt Macy 			if (err == ECKSUM)
506eda14cbcSMatt Macy 				err = SET_ERROR(EIO);
507eda14cbcSMatt Macy 			return (err);
508eda14cbcSMatt Macy 		}
509eda14cbcSMatt Macy 
510eda14cbcSMatt Macy 		if (spa_version(spa) < SPA_VERSION_USERSPACE)
511eda14cbcSMatt Macy 			size = OBJSET_PHYS_SIZE_V1;
512eda14cbcSMatt Macy 		else if (!spa_feature_is_enabled(spa,
513eda14cbcSMatt Macy 		    SPA_FEATURE_PROJECT_QUOTA))
514eda14cbcSMatt Macy 			size = OBJSET_PHYS_SIZE_V2;
515eda14cbcSMatt Macy 		else
516eda14cbcSMatt Macy 			size = sizeof (objset_phys_t);
517eda14cbcSMatt Macy 
518eda14cbcSMatt Macy 		/* Increase the blocksize if we are permitted. */
519eda14cbcSMatt Macy 		if (arc_buf_size(os->os_phys_buf) < size) {
520eda14cbcSMatt Macy 			arc_buf_t *buf = arc_alloc_buf(spa, &os->os_phys_buf,
521eda14cbcSMatt Macy 			    ARC_BUFC_METADATA, size);
522da5137abSMartin Matuska 			memset(buf->b_data, 0, size);
523da5137abSMartin Matuska 			memcpy(buf->b_data, os->os_phys_buf->b_data,
524eda14cbcSMatt Macy 			    arc_buf_size(os->os_phys_buf));
525eda14cbcSMatt Macy 			arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf);
526eda14cbcSMatt Macy 			os->os_phys_buf = buf;
527eda14cbcSMatt Macy 		}
528eda14cbcSMatt Macy 
529eda14cbcSMatt Macy 		os->os_phys = os->os_phys_buf->b_data;
530eda14cbcSMatt Macy 		os->os_flags = os->os_phys->os_flags;
531eda14cbcSMatt Macy 	} else {
532eda14cbcSMatt Macy 		int size = spa_version(spa) >= SPA_VERSION_USERSPACE ?
533eda14cbcSMatt Macy 		    sizeof (objset_phys_t) : OBJSET_PHYS_SIZE_V1;
534eda14cbcSMatt Macy 		os->os_phys_buf = arc_alloc_buf(spa, &os->os_phys_buf,
535eda14cbcSMatt Macy 		    ARC_BUFC_METADATA, size);
536eda14cbcSMatt Macy 		os->os_phys = os->os_phys_buf->b_data;
537da5137abSMartin Matuska 		memset(os->os_phys, 0, size);
538eda14cbcSMatt Macy 	}
539eda14cbcSMatt Macy 	/*
540eda14cbcSMatt Macy 	 * These properties will be filled in by the logic in zfs_get_zplprop()
541eda14cbcSMatt Macy 	 * when they are queried for the first time.
542eda14cbcSMatt Macy 	 */
543eda14cbcSMatt Macy 	os->os_version = OBJSET_PROP_UNINITIALIZED;
544eda14cbcSMatt Macy 	os->os_normalization = OBJSET_PROP_UNINITIALIZED;
545eda14cbcSMatt Macy 	os->os_utf8only = OBJSET_PROP_UNINITIALIZED;
546eda14cbcSMatt Macy 	os->os_casesensitivity = OBJSET_PROP_UNINITIALIZED;
547eda14cbcSMatt Macy 
548eda14cbcSMatt Macy 	/*
549eda14cbcSMatt Macy 	 * Note: the changed_cb will be called once before the register
550eda14cbcSMatt Macy 	 * func returns, thus changing the checksum/compression from the
551eda14cbcSMatt Macy 	 * default (fletcher2/off).  Snapshots don't need to know about
552eda14cbcSMatt Macy 	 * checksum/compression/copies.
553eda14cbcSMatt Macy 	 */
554eda14cbcSMatt Macy 	if (ds != NULL) {
555eda14cbcSMatt Macy 		os->os_encrypted = (ds->ds_dir->dd_crypto_obj != 0);
556eda14cbcSMatt Macy 
557eda14cbcSMatt Macy 		err = dsl_prop_register(ds,
558eda14cbcSMatt Macy 		    zfs_prop_to_name(ZFS_PROP_PRIMARYCACHE),
559eda14cbcSMatt Macy 		    primary_cache_changed_cb, os);
560eda14cbcSMatt Macy 		if (err == 0) {
561eda14cbcSMatt Macy 			err = dsl_prop_register(ds,
562eda14cbcSMatt Macy 			    zfs_prop_to_name(ZFS_PROP_SECONDARYCACHE),
563eda14cbcSMatt Macy 			    secondary_cache_changed_cb, os);
564eda14cbcSMatt Macy 		}
565eda14cbcSMatt Macy 		if (!ds->ds_is_snapshot) {
566eda14cbcSMatt Macy 			if (err == 0) {
567eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
568eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_CHECKSUM),
569eda14cbcSMatt Macy 				    checksum_changed_cb, os);
570eda14cbcSMatt Macy 			}
571eda14cbcSMatt Macy 			if (err == 0) {
572eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
573eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_COMPRESSION),
574eda14cbcSMatt Macy 				    compression_changed_cb, os);
575eda14cbcSMatt Macy 			}
576eda14cbcSMatt Macy 			if (err == 0) {
577eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
578eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_COPIES),
579eda14cbcSMatt Macy 				    copies_changed_cb, os);
580eda14cbcSMatt Macy 			}
581eda14cbcSMatt Macy 			if (err == 0) {
582eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
583eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_DEDUP),
584eda14cbcSMatt Macy 				    dedup_changed_cb, os);
585eda14cbcSMatt Macy 			}
586eda14cbcSMatt Macy 			if (err == 0) {
587eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
588eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_LOGBIAS),
589eda14cbcSMatt Macy 				    logbias_changed_cb, os);
590eda14cbcSMatt Macy 			}
591eda14cbcSMatt Macy 			if (err == 0) {
592eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
593eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_SYNC),
594eda14cbcSMatt Macy 				    sync_changed_cb, os);
595eda14cbcSMatt Macy 			}
596eda14cbcSMatt Macy 			if (err == 0) {
597eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
598eda14cbcSMatt Macy 				    zfs_prop_to_name(
599eda14cbcSMatt Macy 				    ZFS_PROP_REDUNDANT_METADATA),
600eda14cbcSMatt Macy 				    redundant_metadata_changed_cb, os);
601eda14cbcSMatt Macy 			}
602eda14cbcSMatt Macy 			if (err == 0) {
603eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
604eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_RECORDSIZE),
605eda14cbcSMatt Macy 				    recordsize_changed_cb, os);
606eda14cbcSMatt Macy 			}
607eda14cbcSMatt Macy 			if (err == 0) {
608eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
609eda14cbcSMatt Macy 				    zfs_prop_to_name(ZFS_PROP_DNODESIZE),
610eda14cbcSMatt Macy 				    dnodesize_changed_cb, os);
611eda14cbcSMatt Macy 			}
612eda14cbcSMatt Macy 			if (err == 0) {
613eda14cbcSMatt Macy 				err = dsl_prop_register(ds,
614eda14cbcSMatt Macy 				    zfs_prop_to_name(
615eda14cbcSMatt Macy 				    ZFS_PROP_SPECIAL_SMALL_BLOCKS),
616eda14cbcSMatt Macy 				    smallblk_changed_cb, os);
617eda14cbcSMatt Macy 			}
618eda14cbcSMatt Macy 		}
619eda14cbcSMatt Macy 		if (err != 0) {
620eda14cbcSMatt Macy 			arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf);
621eda14cbcSMatt Macy 			kmem_free(os, sizeof (objset_t));
622eda14cbcSMatt Macy 			return (err);
623eda14cbcSMatt Macy 		}
624eda14cbcSMatt Macy 	} else {
625eda14cbcSMatt Macy 		/* It's the meta-objset. */
626eda14cbcSMatt Macy 		os->os_checksum = ZIO_CHECKSUM_FLETCHER_4;
627eda14cbcSMatt Macy 		os->os_compress = ZIO_COMPRESS_ON;
628eda14cbcSMatt Macy 		os->os_complevel = ZIO_COMPLEVEL_DEFAULT;
629eda14cbcSMatt Macy 		os->os_encrypted = B_FALSE;
630eda14cbcSMatt Macy 		os->os_copies = spa_max_replication(spa);
631eda14cbcSMatt Macy 		os->os_dedup_checksum = ZIO_CHECKSUM_OFF;
632eda14cbcSMatt Macy 		os->os_dedup_verify = B_FALSE;
633eda14cbcSMatt Macy 		os->os_logbias = ZFS_LOGBIAS_LATENCY;
634eda14cbcSMatt Macy 		os->os_sync = ZFS_SYNC_STANDARD;
635eda14cbcSMatt Macy 		os->os_primary_cache = ZFS_CACHE_ALL;
636eda14cbcSMatt Macy 		os->os_secondary_cache = ZFS_CACHE_ALL;
637eda14cbcSMatt Macy 		os->os_dnodesize = DNODE_MIN_SIZE;
638eda14cbcSMatt Macy 	}
639eda14cbcSMatt Macy 
640eda14cbcSMatt Macy 	if (ds == NULL || !ds->ds_is_snapshot)
641eda14cbcSMatt Macy 		os->os_zil_header = os->os_phys->os_zil_header;
642eda14cbcSMatt Macy 	os->os_zil = zil_alloc(os, &os->os_zil_header);
643eda14cbcSMatt Macy 
644eda14cbcSMatt Macy 	for (i = 0; i < TXG_SIZE; i++) {
6453ff01b23SMartin Matuska 		multilist_create(&os->os_dirty_dnodes[i], sizeof (dnode_t),
646eda14cbcSMatt Macy 		    offsetof(dnode_t, dn_dirty_link[i]),
647eda14cbcSMatt Macy 		    dnode_multilist_index_func);
648eda14cbcSMatt Macy 	}
649eda14cbcSMatt Macy 	list_create(&os->os_dnodes, sizeof (dnode_t),
650eda14cbcSMatt Macy 	    offsetof(dnode_t, dn_link));
651eda14cbcSMatt Macy 	list_create(&os->os_downgraded_dbufs, sizeof (dmu_buf_impl_t),
652eda14cbcSMatt Macy 	    offsetof(dmu_buf_impl_t, db_link));
653eda14cbcSMatt Macy 
654eda14cbcSMatt Macy 	list_link_init(&os->os_evicting_node);
655eda14cbcSMatt Macy 
656eda14cbcSMatt Macy 	mutex_init(&os->os_lock, NULL, MUTEX_DEFAULT, NULL);
657eda14cbcSMatt Macy 	mutex_init(&os->os_userused_lock, NULL, MUTEX_DEFAULT, NULL);
658eda14cbcSMatt Macy 	mutex_init(&os->os_obj_lock, NULL, MUTEX_DEFAULT, NULL);
659eda14cbcSMatt Macy 	mutex_init(&os->os_user_ptr_lock, NULL, MUTEX_DEFAULT, NULL);
660eda14cbcSMatt Macy 	os->os_obj_next_percpu_len = boot_ncpus;
661eda14cbcSMatt Macy 	os->os_obj_next_percpu = kmem_zalloc(os->os_obj_next_percpu_len *
662eda14cbcSMatt Macy 	    sizeof (os->os_obj_next_percpu[0]), KM_SLEEP);
663eda14cbcSMatt Macy 
664eda14cbcSMatt Macy 	dnode_special_open(os, &os->os_phys->os_meta_dnode,
665eda14cbcSMatt Macy 	    DMU_META_DNODE_OBJECT, &os->os_meta_dnode);
666eda14cbcSMatt Macy 	if (OBJSET_BUF_HAS_USERUSED(os->os_phys_buf)) {
667eda14cbcSMatt Macy 		dnode_special_open(os, &os->os_phys->os_userused_dnode,
668eda14cbcSMatt Macy 		    DMU_USERUSED_OBJECT, &os->os_userused_dnode);
669eda14cbcSMatt Macy 		dnode_special_open(os, &os->os_phys->os_groupused_dnode,
670eda14cbcSMatt Macy 		    DMU_GROUPUSED_OBJECT, &os->os_groupused_dnode);
671eda14cbcSMatt Macy 		if (OBJSET_BUF_HAS_PROJECTUSED(os->os_phys_buf))
672eda14cbcSMatt Macy 			dnode_special_open(os,
673eda14cbcSMatt Macy 			    &os->os_phys->os_projectused_dnode,
674eda14cbcSMatt Macy 			    DMU_PROJECTUSED_OBJECT, &os->os_projectused_dnode);
675eda14cbcSMatt Macy 	}
676eda14cbcSMatt Macy 
677eda14cbcSMatt Macy 	mutex_init(&os->os_upgrade_lock, NULL, MUTEX_DEFAULT, NULL);
678eda14cbcSMatt Macy 
679eda14cbcSMatt Macy 	*osp = os;
680eda14cbcSMatt Macy 	return (0);
681eda14cbcSMatt Macy }
682eda14cbcSMatt Macy 
683eda14cbcSMatt Macy int
684eda14cbcSMatt Macy dmu_objset_from_ds(dsl_dataset_t *ds, objset_t **osp)
685eda14cbcSMatt Macy {
686eda14cbcSMatt Macy 	int err = 0;
687eda14cbcSMatt Macy 
688eda14cbcSMatt Macy 	/*
689eda14cbcSMatt Macy 	 * We need the pool_config lock to manipulate the dsl_dataset_t.
690eda14cbcSMatt Macy 	 * Even if the dataset is long-held, we need the pool_config lock
691eda14cbcSMatt Macy 	 * to open the objset, as it needs to get properties.
692eda14cbcSMatt Macy 	 */
693eda14cbcSMatt Macy 	ASSERT(dsl_pool_config_held(ds->ds_dir->dd_pool));
694eda14cbcSMatt Macy 
695eda14cbcSMatt Macy 	mutex_enter(&ds->ds_opening_lock);
696eda14cbcSMatt Macy 	if (ds->ds_objset == NULL) {
697eda14cbcSMatt Macy 		objset_t *os;
698eda14cbcSMatt Macy 		rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
699eda14cbcSMatt Macy 		err = dmu_objset_open_impl(dsl_dataset_get_spa(ds),
700eda14cbcSMatt Macy 		    ds, dsl_dataset_get_blkptr(ds), &os);
701eda14cbcSMatt Macy 		rrw_exit(&ds->ds_bp_rwlock, FTAG);
702eda14cbcSMatt Macy 
703eda14cbcSMatt Macy 		if (err == 0) {
704eda14cbcSMatt Macy 			mutex_enter(&ds->ds_lock);
705eda14cbcSMatt Macy 			ASSERT(ds->ds_objset == NULL);
706eda14cbcSMatt Macy 			ds->ds_objset = os;
707eda14cbcSMatt Macy 			mutex_exit(&ds->ds_lock);
708eda14cbcSMatt Macy 		}
709eda14cbcSMatt Macy 	}
710eda14cbcSMatt Macy 	*osp = ds->ds_objset;
711eda14cbcSMatt Macy 	mutex_exit(&ds->ds_opening_lock);
712eda14cbcSMatt Macy 	return (err);
713eda14cbcSMatt Macy }
714eda14cbcSMatt Macy 
715eda14cbcSMatt Macy /*
716eda14cbcSMatt Macy  * Holds the pool while the objset is held.  Therefore only one objset
717eda14cbcSMatt Macy  * can be held at a time.
718eda14cbcSMatt Macy  */
719eda14cbcSMatt Macy int
720a0b956f5SMartin Matuska dmu_objset_hold_flags(const char *name, boolean_t decrypt, const void *tag,
721eda14cbcSMatt Macy     objset_t **osp)
722eda14cbcSMatt Macy {
723eda14cbcSMatt Macy 	dsl_pool_t *dp;
724eda14cbcSMatt Macy 	dsl_dataset_t *ds;
725eda14cbcSMatt Macy 	int err;
7267877fdebSMatt Macy 	ds_hold_flags_t flags;
727eda14cbcSMatt Macy 
7287877fdebSMatt Macy 	flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE;
729eda14cbcSMatt Macy 	err = dsl_pool_hold(name, tag, &dp);
730eda14cbcSMatt Macy 	if (err != 0)
731eda14cbcSMatt Macy 		return (err);
732eda14cbcSMatt Macy 	err = dsl_dataset_hold_flags(dp, name, flags, tag, &ds);
733eda14cbcSMatt Macy 	if (err != 0) {
734eda14cbcSMatt Macy 		dsl_pool_rele(dp, tag);
735eda14cbcSMatt Macy 		return (err);
736eda14cbcSMatt Macy 	}
737eda14cbcSMatt Macy 
738eda14cbcSMatt Macy 	err = dmu_objset_from_ds(ds, osp);
739eda14cbcSMatt Macy 	if (err != 0) {
740eda14cbcSMatt Macy 		dsl_dataset_rele(ds, tag);
741eda14cbcSMatt Macy 		dsl_pool_rele(dp, tag);
742eda14cbcSMatt Macy 	}
743eda14cbcSMatt Macy 
744eda14cbcSMatt Macy 	return (err);
745eda14cbcSMatt Macy }
746eda14cbcSMatt Macy 
747eda14cbcSMatt Macy int
748a0b956f5SMartin Matuska dmu_objset_hold(const char *name, const void *tag, objset_t **osp)
749eda14cbcSMatt Macy {
750eda14cbcSMatt Macy 	return (dmu_objset_hold_flags(name, B_FALSE, tag, osp));
751eda14cbcSMatt Macy }
752eda14cbcSMatt Macy 
753eda14cbcSMatt Macy static int
754eda14cbcSMatt Macy dmu_objset_own_impl(dsl_dataset_t *ds, dmu_objset_type_t type,
755a0b956f5SMartin Matuska     boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp)
756eda14cbcSMatt Macy {
757e92ffd9bSMartin Matuska 	(void) tag;
758eda14cbcSMatt Macy 
759e92ffd9bSMartin Matuska 	int err = dmu_objset_from_ds(ds, osp);
760eda14cbcSMatt Macy 	if (err != 0) {
761eda14cbcSMatt Macy 		return (err);
762eda14cbcSMatt Macy 	} else if (type != DMU_OST_ANY && type != (*osp)->os_phys->os_type) {
763eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
764eda14cbcSMatt Macy 	} else if (!readonly && dsl_dataset_is_snapshot(ds)) {
765eda14cbcSMatt Macy 		return (SET_ERROR(EROFS));
766eda14cbcSMatt Macy 	} else if (!readonly && decrypt &&
767eda14cbcSMatt Macy 	    dsl_dir_incompatible_encryption_version(ds->ds_dir)) {
768eda14cbcSMatt Macy 		return (SET_ERROR(EROFS));
769eda14cbcSMatt Macy 	}
770eda14cbcSMatt Macy 
771eda14cbcSMatt Macy 	/* if we are decrypting, we can now check MACs in os->os_phys_buf */
772eda14cbcSMatt Macy 	if (decrypt && arc_is_unauthenticated((*osp)->os_phys_buf)) {
773eda14cbcSMatt Macy 		zbookmark_phys_t zb;
774eda14cbcSMatt Macy 
775eda14cbcSMatt Macy 		SET_BOOKMARK(&zb, ds->ds_object, ZB_ROOT_OBJECT,
776eda14cbcSMatt Macy 		    ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
777eda14cbcSMatt Macy 		err = arc_untransform((*osp)->os_phys_buf, (*osp)->os_spa,
778eda14cbcSMatt Macy 		    &zb, B_FALSE);
779eda14cbcSMatt Macy 		if (err != 0)
780eda14cbcSMatt Macy 			return (err);
781eda14cbcSMatt Macy 
782eda14cbcSMatt Macy 		ASSERT0(arc_is_unauthenticated((*osp)->os_phys_buf));
783eda14cbcSMatt Macy 	}
784eda14cbcSMatt Macy 
785eda14cbcSMatt Macy 	return (0);
786eda14cbcSMatt Macy }
787eda14cbcSMatt Macy 
788eda14cbcSMatt Macy /*
789eda14cbcSMatt Macy  * dsl_pool must not be held when this is called.
790eda14cbcSMatt Macy  * Upon successful return, there will be a longhold on the dataset,
791eda14cbcSMatt Macy  * and the dsl_pool will not be held.
792eda14cbcSMatt Macy  */
793eda14cbcSMatt Macy int
794eda14cbcSMatt Macy dmu_objset_own(const char *name, dmu_objset_type_t type,
795a0b956f5SMartin Matuska     boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp)
796eda14cbcSMatt Macy {
797eda14cbcSMatt Macy 	dsl_pool_t *dp;
798eda14cbcSMatt Macy 	dsl_dataset_t *ds;
799eda14cbcSMatt Macy 	int err;
8007877fdebSMatt Macy 	ds_hold_flags_t flags;
801eda14cbcSMatt Macy 
8027877fdebSMatt Macy 	flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE;
803eda14cbcSMatt Macy 	err = dsl_pool_hold(name, FTAG, &dp);
804eda14cbcSMatt Macy 	if (err != 0)
805eda14cbcSMatt Macy 		return (err);
806eda14cbcSMatt Macy 	err = dsl_dataset_own(dp, name, flags, tag, &ds);
807eda14cbcSMatt Macy 	if (err != 0) {
808eda14cbcSMatt Macy 		dsl_pool_rele(dp, FTAG);
809eda14cbcSMatt Macy 		return (err);
810eda14cbcSMatt Macy 	}
811eda14cbcSMatt Macy 	err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp);
812eda14cbcSMatt Macy 	if (err != 0) {
813eda14cbcSMatt Macy 		dsl_dataset_disown(ds, flags, tag);
814eda14cbcSMatt Macy 		dsl_pool_rele(dp, FTAG);
815eda14cbcSMatt Macy 		return (err);
816eda14cbcSMatt Macy 	}
817eda14cbcSMatt Macy 
818eda14cbcSMatt Macy 	/*
819eda14cbcSMatt Macy 	 * User accounting requires the dataset to be decrypted and rw.
820eda14cbcSMatt Macy 	 * We also don't begin user accounting during claiming to help
821eda14cbcSMatt Macy 	 * speed up pool import times and to keep this txg reserved
822eda14cbcSMatt Macy 	 * completely for recovery work.
823eda14cbcSMatt Macy 	 */
8247877fdebSMatt Macy 	if (!readonly && !dp->dp_spa->spa_claiming &&
8257877fdebSMatt Macy 	    (ds->ds_dir->dd_crypto_obj == 0 || decrypt)) {
8267877fdebSMatt Macy 		if (dmu_objset_userobjspace_upgradable(*osp) ||
8277877fdebSMatt Macy 		    dmu_objset_projectquota_upgradable(*osp)) {
828eda14cbcSMatt Macy 			dmu_objset_id_quota_upgrade(*osp);
8297877fdebSMatt Macy 		} else if (dmu_objset_userused_enabled(*osp)) {
8307877fdebSMatt Macy 			dmu_objset_userspace_upgrade(*osp);
8317877fdebSMatt Macy 		}
8327877fdebSMatt Macy 	}
833eda14cbcSMatt Macy 
834eda14cbcSMatt Macy 	dsl_pool_rele(dp, FTAG);
835eda14cbcSMatt Macy 	return (0);
836eda14cbcSMatt Macy }
837eda14cbcSMatt Macy 
838eda14cbcSMatt Macy int
839eda14cbcSMatt Macy dmu_objset_own_obj(dsl_pool_t *dp, uint64_t obj, dmu_objset_type_t type,
840a0b956f5SMartin Matuska     boolean_t readonly, boolean_t decrypt, const void *tag, objset_t **osp)
841eda14cbcSMatt Macy {
842eda14cbcSMatt Macy 	dsl_dataset_t *ds;
843eda14cbcSMatt Macy 	int err;
8447877fdebSMatt Macy 	ds_hold_flags_t flags;
845eda14cbcSMatt Macy 
8467877fdebSMatt Macy 	flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE;
847eda14cbcSMatt Macy 	err = dsl_dataset_own_obj(dp, obj, flags, tag, &ds);
848eda14cbcSMatt Macy 	if (err != 0)
849eda14cbcSMatt Macy 		return (err);
850eda14cbcSMatt Macy 
851eda14cbcSMatt Macy 	err = dmu_objset_own_impl(ds, type, readonly, decrypt, tag, osp);
852eda14cbcSMatt Macy 	if (err != 0) {
853eda14cbcSMatt Macy 		dsl_dataset_disown(ds, flags, tag);
854eda14cbcSMatt Macy 		return (err);
855eda14cbcSMatt Macy 	}
856eda14cbcSMatt Macy 
857eda14cbcSMatt Macy 	return (0);
858eda14cbcSMatt Macy }
859eda14cbcSMatt Macy 
860eda14cbcSMatt Macy void
861a0b956f5SMartin Matuska dmu_objset_rele_flags(objset_t *os, boolean_t decrypt, const void *tag)
862eda14cbcSMatt Macy {
8637877fdebSMatt Macy 	ds_hold_flags_t flags;
864eda14cbcSMatt Macy 	dsl_pool_t *dp = dmu_objset_pool(os);
8657877fdebSMatt Macy 
8667877fdebSMatt Macy 	flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE;
867eda14cbcSMatt Macy 	dsl_dataset_rele_flags(os->os_dsl_dataset, flags, tag);
868eda14cbcSMatt Macy 	dsl_pool_rele(dp, tag);
869eda14cbcSMatt Macy }
870eda14cbcSMatt Macy 
871eda14cbcSMatt Macy void
872a0b956f5SMartin Matuska dmu_objset_rele(objset_t *os, const void *tag)
873eda14cbcSMatt Macy {
874eda14cbcSMatt Macy 	dmu_objset_rele_flags(os, B_FALSE, tag);
875eda14cbcSMatt Macy }
876eda14cbcSMatt Macy 
877eda14cbcSMatt Macy /*
878eda14cbcSMatt Macy  * When we are called, os MUST refer to an objset associated with a dataset
879eda14cbcSMatt Macy  * that is owned by 'tag'; that is, is held and long held by 'tag' and ds_owner
880eda14cbcSMatt Macy  * == tag.  We will then release and reacquire ownership of the dataset while
881eda14cbcSMatt Macy  * holding the pool config_rwlock to avoid intervening namespace or ownership
882eda14cbcSMatt Macy  * changes may occur.
883eda14cbcSMatt Macy  *
884eda14cbcSMatt Macy  * This exists solely to accommodate zfs_ioc_userspace_upgrade()'s desire to
885eda14cbcSMatt Macy  * release the hold on its dataset and acquire a new one on the dataset of the
886eda14cbcSMatt Macy  * same name so that it can be partially torn down and reconstructed.
887eda14cbcSMatt Macy  */
888eda14cbcSMatt Macy void
889eda14cbcSMatt Macy dmu_objset_refresh_ownership(dsl_dataset_t *ds, dsl_dataset_t **newds,
890a0b956f5SMartin Matuska     boolean_t decrypt, const void *tag)
891eda14cbcSMatt Macy {
892eda14cbcSMatt Macy 	dsl_pool_t *dp;
893eda14cbcSMatt Macy 	char name[ZFS_MAX_DATASET_NAME_LEN];
8947877fdebSMatt Macy 	ds_hold_flags_t flags;
895eda14cbcSMatt Macy 
8967877fdebSMatt Macy 	flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE;
897eda14cbcSMatt Macy 	VERIFY3P(ds, !=, NULL);
898eda14cbcSMatt Macy 	VERIFY3P(ds->ds_owner, ==, tag);
899eda14cbcSMatt Macy 	VERIFY(dsl_dataset_long_held(ds));
900eda14cbcSMatt Macy 
901eda14cbcSMatt Macy 	dsl_dataset_name(ds, name);
902eda14cbcSMatt Macy 	dp = ds->ds_dir->dd_pool;
903eda14cbcSMatt Macy 	dsl_pool_config_enter(dp, FTAG);
9047877fdebSMatt Macy 	dsl_dataset_disown(ds, flags, tag);
9057877fdebSMatt Macy 	VERIFY0(dsl_dataset_own(dp, name, flags, tag, newds));
906eda14cbcSMatt Macy 	dsl_pool_config_exit(dp, FTAG);
907eda14cbcSMatt Macy }
908eda14cbcSMatt Macy 
909eda14cbcSMatt Macy void
910a0b956f5SMartin Matuska dmu_objset_disown(objset_t *os, boolean_t decrypt, const void *tag)
911eda14cbcSMatt Macy {
9127877fdebSMatt Macy 	ds_hold_flags_t flags;
9137877fdebSMatt Macy 
9147877fdebSMatt Macy 	flags = (decrypt) ? DS_HOLD_FLAG_DECRYPT : DS_HOLD_FLAG_NONE;
915eda14cbcSMatt Macy 	/*
916eda14cbcSMatt Macy 	 * Stop upgrading thread
917eda14cbcSMatt Macy 	 */
918eda14cbcSMatt Macy 	dmu_objset_upgrade_stop(os);
9197877fdebSMatt Macy 	dsl_dataset_disown(os->os_dsl_dataset, flags, tag);
920eda14cbcSMatt Macy }
921eda14cbcSMatt Macy 
922eda14cbcSMatt Macy void
923eda14cbcSMatt Macy dmu_objset_evict_dbufs(objset_t *os)
924eda14cbcSMatt Macy {
925eda14cbcSMatt Macy 	dnode_t *dn_marker;
926eda14cbcSMatt Macy 	dnode_t *dn;
927eda14cbcSMatt Macy 
928eda14cbcSMatt Macy 	dn_marker = kmem_alloc(sizeof (dnode_t), KM_SLEEP);
929eda14cbcSMatt Macy 
930eda14cbcSMatt Macy 	mutex_enter(&os->os_lock);
931eda14cbcSMatt Macy 	dn = list_head(&os->os_dnodes);
932eda14cbcSMatt Macy 	while (dn != NULL) {
933eda14cbcSMatt Macy 		/*
934eda14cbcSMatt Macy 		 * Skip dnodes without holds.  We have to do this dance
935eda14cbcSMatt Macy 		 * because dnode_add_ref() only works if there is already a
936eda14cbcSMatt Macy 		 * hold.  If the dnode has no holds, then it has no dbufs.
937eda14cbcSMatt Macy 		 */
938eda14cbcSMatt Macy 		if (dnode_add_ref(dn, FTAG)) {
939eda14cbcSMatt Macy 			list_insert_after(&os->os_dnodes, dn, dn_marker);
940eda14cbcSMatt Macy 			mutex_exit(&os->os_lock);
941eda14cbcSMatt Macy 
942eda14cbcSMatt Macy 			dnode_evict_dbufs(dn);
943eda14cbcSMatt Macy 			dnode_rele(dn, FTAG);
944eda14cbcSMatt Macy 
945eda14cbcSMatt Macy 			mutex_enter(&os->os_lock);
946eda14cbcSMatt Macy 			dn = list_next(&os->os_dnodes, dn_marker);
947eda14cbcSMatt Macy 			list_remove(&os->os_dnodes, dn_marker);
948eda14cbcSMatt Macy 		} else {
949eda14cbcSMatt Macy 			dn = list_next(&os->os_dnodes, dn);
950eda14cbcSMatt Macy 		}
951eda14cbcSMatt Macy 	}
952eda14cbcSMatt Macy 	mutex_exit(&os->os_lock);
953eda14cbcSMatt Macy 
954eda14cbcSMatt Macy 	kmem_free(dn_marker, sizeof (dnode_t));
955eda14cbcSMatt Macy 
956eda14cbcSMatt Macy 	if (DMU_USERUSED_DNODE(os) != NULL) {
957eda14cbcSMatt Macy 		if (DMU_PROJECTUSED_DNODE(os) != NULL)
958eda14cbcSMatt Macy 			dnode_evict_dbufs(DMU_PROJECTUSED_DNODE(os));
959eda14cbcSMatt Macy 		dnode_evict_dbufs(DMU_GROUPUSED_DNODE(os));
960eda14cbcSMatt Macy 		dnode_evict_dbufs(DMU_USERUSED_DNODE(os));
961eda14cbcSMatt Macy 	}
962eda14cbcSMatt Macy 	dnode_evict_dbufs(DMU_META_DNODE(os));
963eda14cbcSMatt Macy }
964eda14cbcSMatt Macy 
965eda14cbcSMatt Macy /*
966eda14cbcSMatt Macy  * Objset eviction processing is split into into two pieces.
967eda14cbcSMatt Macy  * The first marks the objset as evicting, evicts any dbufs that
968eda14cbcSMatt Macy  * have a refcount of zero, and then queues up the objset for the
969eda14cbcSMatt Macy  * second phase of eviction.  Once os->os_dnodes has been cleared by
970eda14cbcSMatt Macy  * dnode_buf_pageout()->dnode_destroy(), the second phase is executed.
971eda14cbcSMatt Macy  * The second phase closes the special dnodes, dequeues the objset from
972eda14cbcSMatt Macy  * the list of those undergoing eviction, and finally frees the objset.
973eda14cbcSMatt Macy  *
974eda14cbcSMatt Macy  * NOTE: Due to asynchronous eviction processing (invocation of
975eda14cbcSMatt Macy  *       dnode_buf_pageout()), it is possible for the meta dnode for the
976eda14cbcSMatt Macy  *       objset to have no holds even though os->os_dnodes is not empty.
977eda14cbcSMatt Macy  */
978eda14cbcSMatt Macy void
979eda14cbcSMatt Macy dmu_objset_evict(objset_t *os)
980eda14cbcSMatt Macy {
981eda14cbcSMatt Macy 	dsl_dataset_t *ds = os->os_dsl_dataset;
982eda14cbcSMatt Macy 
983eda14cbcSMatt Macy 	for (int t = 0; t < TXG_SIZE; t++)
984eda14cbcSMatt Macy 		ASSERT(!dmu_objset_is_dirty(os, t));
985eda14cbcSMatt Macy 
986eda14cbcSMatt Macy 	if (ds)
987eda14cbcSMatt Macy 		dsl_prop_unregister_all(ds, os);
988eda14cbcSMatt Macy 
989eda14cbcSMatt Macy 	if (os->os_sa)
990eda14cbcSMatt Macy 		sa_tear_down(os);
991eda14cbcSMatt Macy 
992eda14cbcSMatt Macy 	dmu_objset_evict_dbufs(os);
993eda14cbcSMatt Macy 
994eda14cbcSMatt Macy 	mutex_enter(&os->os_lock);
995eda14cbcSMatt Macy 	spa_evicting_os_register(os->os_spa, os);
996eda14cbcSMatt Macy 	if (list_is_empty(&os->os_dnodes)) {
997eda14cbcSMatt Macy 		mutex_exit(&os->os_lock);
998eda14cbcSMatt Macy 		dmu_objset_evict_done(os);
999eda14cbcSMatt Macy 	} else {
1000eda14cbcSMatt Macy 		mutex_exit(&os->os_lock);
1001eda14cbcSMatt Macy 	}
1002eda14cbcSMatt Macy 
1003eda14cbcSMatt Macy 
1004eda14cbcSMatt Macy }
1005eda14cbcSMatt Macy 
1006eda14cbcSMatt Macy void
1007eda14cbcSMatt Macy dmu_objset_evict_done(objset_t *os)
1008eda14cbcSMatt Macy {
1009eda14cbcSMatt Macy 	ASSERT3P(list_head(&os->os_dnodes), ==, NULL);
1010eda14cbcSMatt Macy 
1011eda14cbcSMatt Macy 	dnode_special_close(&os->os_meta_dnode);
1012eda14cbcSMatt Macy 	if (DMU_USERUSED_DNODE(os)) {
1013eda14cbcSMatt Macy 		if (DMU_PROJECTUSED_DNODE(os))
1014eda14cbcSMatt Macy 			dnode_special_close(&os->os_projectused_dnode);
1015eda14cbcSMatt Macy 		dnode_special_close(&os->os_userused_dnode);
1016eda14cbcSMatt Macy 		dnode_special_close(&os->os_groupused_dnode);
1017eda14cbcSMatt Macy 	}
1018eda14cbcSMatt Macy 	zil_free(os->os_zil);
1019eda14cbcSMatt Macy 
1020eda14cbcSMatt Macy 	arc_buf_destroy(os->os_phys_buf, &os->os_phys_buf);
1021eda14cbcSMatt Macy 
1022eda14cbcSMatt Macy 	/*
1023eda14cbcSMatt Macy 	 * This is a barrier to prevent the objset from going away in
1024eda14cbcSMatt Macy 	 * dnode_move() until we can safely ensure that the objset is still in
1025eda14cbcSMatt Macy 	 * use. We consider the objset valid before the barrier and invalid
1026eda14cbcSMatt Macy 	 * after the barrier.
1027eda14cbcSMatt Macy 	 */
1028eda14cbcSMatt Macy 	rw_enter(&os_lock, RW_READER);
1029eda14cbcSMatt Macy 	rw_exit(&os_lock);
1030eda14cbcSMatt Macy 
1031eda14cbcSMatt Macy 	kmem_free(os->os_obj_next_percpu,
1032eda14cbcSMatt Macy 	    os->os_obj_next_percpu_len * sizeof (os->os_obj_next_percpu[0]));
1033eda14cbcSMatt Macy 
1034eda14cbcSMatt Macy 	mutex_destroy(&os->os_lock);
1035eda14cbcSMatt Macy 	mutex_destroy(&os->os_userused_lock);
1036eda14cbcSMatt Macy 	mutex_destroy(&os->os_obj_lock);
1037eda14cbcSMatt Macy 	mutex_destroy(&os->os_user_ptr_lock);
1038eda14cbcSMatt Macy 	mutex_destroy(&os->os_upgrade_lock);
10393ff01b23SMartin Matuska 	for (int i = 0; i < TXG_SIZE; i++)
10403ff01b23SMartin Matuska 		multilist_destroy(&os->os_dirty_dnodes[i]);
1041eda14cbcSMatt Macy 	spa_evicting_os_deregister(os->os_spa, os);
1042eda14cbcSMatt Macy 	kmem_free(os, sizeof (objset_t));
1043eda14cbcSMatt Macy }
1044eda14cbcSMatt Macy 
1045eda14cbcSMatt Macy inode_timespec_t
1046eda14cbcSMatt Macy dmu_objset_snap_cmtime(objset_t *os)
1047eda14cbcSMatt Macy {
1048eda14cbcSMatt Macy 	return (dsl_dir_snap_cmtime(os->os_dsl_dataset->ds_dir));
1049eda14cbcSMatt Macy }
1050eda14cbcSMatt Macy 
1051eda14cbcSMatt Macy objset_t *
1052eda14cbcSMatt Macy dmu_objset_create_impl_dnstats(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
1053eda14cbcSMatt Macy     dmu_objset_type_t type, int levels, int blksz, int ibs, dmu_tx_t *tx)
1054eda14cbcSMatt Macy {
1055eda14cbcSMatt Macy 	objset_t *os;
1056eda14cbcSMatt Macy 	dnode_t *mdn;
1057eda14cbcSMatt Macy 
1058eda14cbcSMatt Macy 	ASSERT(dmu_tx_is_syncing(tx));
1059eda14cbcSMatt Macy 
1060eda14cbcSMatt Macy 	if (blksz == 0)
1061eda14cbcSMatt Macy 		blksz = DNODE_BLOCK_SIZE;
1062eda14cbcSMatt Macy 	if (ibs == 0)
1063eda14cbcSMatt Macy 		ibs = DN_MAX_INDBLKSHIFT;
1064eda14cbcSMatt Macy 
1065eda14cbcSMatt Macy 	if (ds != NULL)
1066eda14cbcSMatt Macy 		VERIFY0(dmu_objset_from_ds(ds, &os));
1067eda14cbcSMatt Macy 	else
1068eda14cbcSMatt Macy 		VERIFY0(dmu_objset_open_impl(spa, NULL, bp, &os));
1069eda14cbcSMatt Macy 
1070eda14cbcSMatt Macy 	mdn = DMU_META_DNODE(os);
1071eda14cbcSMatt Macy 
1072eda14cbcSMatt Macy 	dnode_allocate(mdn, DMU_OT_DNODE, blksz, ibs, DMU_OT_NONE, 0,
1073eda14cbcSMatt Macy 	    DNODE_MIN_SLOTS, tx);
1074eda14cbcSMatt Macy 
1075eda14cbcSMatt Macy 	/*
1076eda14cbcSMatt Macy 	 * We don't want to have to increase the meta-dnode's nlevels
1077eda14cbcSMatt Macy 	 * later, because then we could do it in quiescing context while
1078eda14cbcSMatt Macy 	 * we are also accessing it in open context.
1079eda14cbcSMatt Macy 	 *
1080eda14cbcSMatt Macy 	 * This precaution is not necessary for the MOS (ds == NULL),
1081eda14cbcSMatt Macy 	 * because the MOS is only updated in syncing context.
1082eda14cbcSMatt Macy 	 * This is most fortunate: the MOS is the only objset that
1083eda14cbcSMatt Macy 	 * needs to be synced multiple times as spa_sync() iterates
1084eda14cbcSMatt Macy 	 * to convergence, so minimizing its dn_nlevels matters.
1085eda14cbcSMatt Macy 	 */
1086eda14cbcSMatt Macy 	if (ds != NULL) {
1087eda14cbcSMatt Macy 		if (levels == 0) {
1088eda14cbcSMatt Macy 			levels = 1;
1089eda14cbcSMatt Macy 
1090eda14cbcSMatt Macy 			/*
1091eda14cbcSMatt Macy 			 * Determine the number of levels necessary for the
1092eda14cbcSMatt Macy 			 * meta-dnode to contain DN_MAX_OBJECT dnodes.  Note
1093eda14cbcSMatt Macy 			 * that in order to ensure that we do not overflow
1094eda14cbcSMatt Macy 			 * 64 bits, there has to be a nlevels that gives us a
1095eda14cbcSMatt Macy 			 * number of blocks > DN_MAX_OBJECT but < 2^64.
1096eda14cbcSMatt Macy 			 * Therefore, (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)
1097eda14cbcSMatt Macy 			 * (10) must be less than (64 - log2(DN_MAX_OBJECT))
1098eda14cbcSMatt Macy 			 * (16).
1099eda14cbcSMatt Macy 			 */
1100eda14cbcSMatt Macy 			while ((uint64_t)mdn->dn_nblkptr <<
1101eda14cbcSMatt Macy 			    (mdn->dn_datablkshift - DNODE_SHIFT + (levels - 1) *
1102eda14cbcSMatt Macy 			    (mdn->dn_indblkshift - SPA_BLKPTRSHIFT)) <
1103eda14cbcSMatt Macy 			    DN_MAX_OBJECT)
1104eda14cbcSMatt Macy 				levels++;
1105eda14cbcSMatt Macy 		}
1106eda14cbcSMatt Macy 
1107eda14cbcSMatt Macy 		mdn->dn_next_nlevels[tx->tx_txg & TXG_MASK] =
1108eda14cbcSMatt Macy 		    mdn->dn_nlevels = levels;
1109eda14cbcSMatt Macy 	}
1110eda14cbcSMatt Macy 
1111eda14cbcSMatt Macy 	ASSERT(type != DMU_OST_NONE);
1112eda14cbcSMatt Macy 	ASSERT(type != DMU_OST_ANY);
1113eda14cbcSMatt Macy 	ASSERT(type < DMU_OST_NUMTYPES);
1114eda14cbcSMatt Macy 	os->os_phys->os_type = type;
1115eda14cbcSMatt Macy 
1116eda14cbcSMatt Macy 	/*
1117eda14cbcSMatt Macy 	 * Enable user accounting if it is enabled and this is not an
1118eda14cbcSMatt Macy 	 * encrypted receive.
1119eda14cbcSMatt Macy 	 */
1120eda14cbcSMatt Macy 	if (dmu_objset_userused_enabled(os) &&
1121eda14cbcSMatt Macy 	    (!os->os_encrypted || !dmu_objset_is_receiving(os))) {
1122eda14cbcSMatt Macy 		os->os_phys->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
1123eda14cbcSMatt Macy 		if (dmu_objset_userobjused_enabled(os)) {
1124*2a58b312SMartin Matuska 			ASSERT3P(ds, !=, NULL);
1125eda14cbcSMatt Macy 			ds->ds_feature_activation[
1126eda14cbcSMatt Macy 			    SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE;
1127eda14cbcSMatt Macy 			os->os_phys->os_flags |=
1128eda14cbcSMatt Macy 			    OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE;
1129eda14cbcSMatt Macy 		}
1130eda14cbcSMatt Macy 		if (dmu_objset_projectquota_enabled(os)) {
1131*2a58b312SMartin Matuska 			ASSERT3P(ds, !=, NULL);
1132eda14cbcSMatt Macy 			ds->ds_feature_activation[
1133eda14cbcSMatt Macy 			    SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE;
1134eda14cbcSMatt Macy 			os->os_phys->os_flags |=
1135eda14cbcSMatt Macy 			    OBJSET_FLAG_PROJECTQUOTA_COMPLETE;
1136eda14cbcSMatt Macy 		}
1137eda14cbcSMatt Macy 		os->os_flags = os->os_phys->os_flags;
1138eda14cbcSMatt Macy 	}
1139eda14cbcSMatt Macy 
1140eda14cbcSMatt Macy 	dsl_dataset_dirty(ds, tx);
1141eda14cbcSMatt Macy 
1142eda14cbcSMatt Macy 	return (os);
1143eda14cbcSMatt Macy }
1144eda14cbcSMatt Macy 
1145eda14cbcSMatt Macy /* called from dsl for meta-objset */
1146eda14cbcSMatt Macy objset_t *
1147eda14cbcSMatt Macy dmu_objset_create_impl(spa_t *spa, dsl_dataset_t *ds, blkptr_t *bp,
1148eda14cbcSMatt Macy     dmu_objset_type_t type, dmu_tx_t *tx)
1149eda14cbcSMatt Macy {
1150eda14cbcSMatt Macy 	return (dmu_objset_create_impl_dnstats(spa, ds, bp, type, 0, 0, 0, tx));
1151eda14cbcSMatt Macy }
1152eda14cbcSMatt Macy 
1153eda14cbcSMatt Macy typedef struct dmu_objset_create_arg {
1154eda14cbcSMatt Macy 	const char *doca_name;
1155eda14cbcSMatt Macy 	cred_t *doca_cred;
1156eda14cbcSMatt Macy 	proc_t *doca_proc;
1157eda14cbcSMatt Macy 	void (*doca_userfunc)(objset_t *os, void *arg,
1158eda14cbcSMatt Macy 	    cred_t *cr, dmu_tx_t *tx);
1159eda14cbcSMatt Macy 	void *doca_userarg;
1160eda14cbcSMatt Macy 	dmu_objset_type_t doca_type;
1161eda14cbcSMatt Macy 	uint64_t doca_flags;
1162eda14cbcSMatt Macy 	dsl_crypto_params_t *doca_dcp;
1163eda14cbcSMatt Macy } dmu_objset_create_arg_t;
1164eda14cbcSMatt Macy 
1165eda14cbcSMatt Macy static int
1166eda14cbcSMatt Macy dmu_objset_create_check(void *arg, dmu_tx_t *tx)
1167eda14cbcSMatt Macy {
1168eda14cbcSMatt Macy 	dmu_objset_create_arg_t *doca = arg;
1169eda14cbcSMatt Macy 	dsl_pool_t *dp = dmu_tx_pool(tx);
1170eda14cbcSMatt Macy 	dsl_dir_t *pdd;
1171eda14cbcSMatt Macy 	dsl_dataset_t *parentds;
1172eda14cbcSMatt Macy 	objset_t *parentos;
1173eda14cbcSMatt Macy 	const char *tail;
1174eda14cbcSMatt Macy 	int error;
1175eda14cbcSMatt Macy 
1176eda14cbcSMatt Macy 	if (strchr(doca->doca_name, '@') != NULL)
1177eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
1178eda14cbcSMatt Macy 
1179eda14cbcSMatt Macy 	if (strlen(doca->doca_name) >= ZFS_MAX_DATASET_NAME_LEN)
1180eda14cbcSMatt Macy 		return (SET_ERROR(ENAMETOOLONG));
1181eda14cbcSMatt Macy 
1182eda14cbcSMatt Macy 	if (dataset_nestcheck(doca->doca_name) != 0)
1183eda14cbcSMatt Macy 		return (SET_ERROR(ENAMETOOLONG));
1184eda14cbcSMatt Macy 
1185eda14cbcSMatt Macy 	error = dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail);
1186eda14cbcSMatt Macy 	if (error != 0)
1187eda14cbcSMatt Macy 		return (error);
1188eda14cbcSMatt Macy 	if (tail == NULL) {
1189eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1190eda14cbcSMatt Macy 		return (SET_ERROR(EEXIST));
1191eda14cbcSMatt Macy 	}
1192eda14cbcSMatt Macy 
1193eda14cbcSMatt Macy 	error = dmu_objset_create_crypt_check(pdd, doca->doca_dcp, NULL);
1194eda14cbcSMatt Macy 	if (error != 0) {
1195eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1196eda14cbcSMatt Macy 		return (error);
1197eda14cbcSMatt Macy 	}
1198eda14cbcSMatt Macy 
1199eda14cbcSMatt Macy 	error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL,
1200eda14cbcSMatt Macy 	    doca->doca_cred, doca->doca_proc);
1201eda14cbcSMatt Macy 	if (error != 0) {
1202eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1203eda14cbcSMatt Macy 		return (error);
1204eda14cbcSMatt Macy 	}
1205eda14cbcSMatt Macy 
1206eda14cbcSMatt Macy 	/* can't create below anything but filesystems (eg. no ZVOLs) */
1207eda14cbcSMatt Macy 	error = dsl_dataset_hold_obj(pdd->dd_pool,
1208eda14cbcSMatt Macy 	    dsl_dir_phys(pdd)->dd_head_dataset_obj, FTAG, &parentds);
1209eda14cbcSMatt Macy 	if (error != 0) {
1210eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1211eda14cbcSMatt Macy 		return (error);
1212eda14cbcSMatt Macy 	}
1213eda14cbcSMatt Macy 	error = dmu_objset_from_ds(parentds, &parentos);
1214eda14cbcSMatt Macy 	if (error != 0) {
1215eda14cbcSMatt Macy 		dsl_dataset_rele(parentds, FTAG);
1216eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1217eda14cbcSMatt Macy 		return (error);
1218eda14cbcSMatt Macy 	}
1219eda14cbcSMatt Macy 	if (dmu_objset_type(parentos) != DMU_OST_ZFS) {
1220eda14cbcSMatt Macy 		dsl_dataset_rele(parentds, FTAG);
1221eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1222eda14cbcSMatt Macy 		return (SET_ERROR(ZFS_ERR_WRONG_PARENT));
1223eda14cbcSMatt Macy 	}
1224eda14cbcSMatt Macy 	dsl_dataset_rele(parentds, FTAG);
1225eda14cbcSMatt Macy 	dsl_dir_rele(pdd, FTAG);
1226eda14cbcSMatt Macy 
1227eda14cbcSMatt Macy 	return (error);
1228eda14cbcSMatt Macy }
1229eda14cbcSMatt Macy 
1230eda14cbcSMatt Macy static void
1231eda14cbcSMatt Macy dmu_objset_create_sync(void *arg, dmu_tx_t *tx)
1232eda14cbcSMatt Macy {
1233eda14cbcSMatt Macy 	dmu_objset_create_arg_t *doca = arg;
1234eda14cbcSMatt Macy 	dsl_pool_t *dp = dmu_tx_pool(tx);
1235eda14cbcSMatt Macy 	spa_t *spa = dp->dp_spa;
1236eda14cbcSMatt Macy 	dsl_dir_t *pdd;
1237eda14cbcSMatt Macy 	const char *tail;
1238eda14cbcSMatt Macy 	dsl_dataset_t *ds;
1239eda14cbcSMatt Macy 	uint64_t obj;
1240eda14cbcSMatt Macy 	blkptr_t *bp;
1241eda14cbcSMatt Macy 	objset_t *os;
1242eda14cbcSMatt Macy 	zio_t *rzio;
1243eda14cbcSMatt Macy 
1244eda14cbcSMatt Macy 	VERIFY0(dsl_dir_hold(dp, doca->doca_name, FTAG, &pdd, &tail));
1245eda14cbcSMatt Macy 
1246eda14cbcSMatt Macy 	obj = dsl_dataset_create_sync(pdd, tail, NULL, doca->doca_flags,
1247eda14cbcSMatt Macy 	    doca->doca_cred, doca->doca_dcp, tx);
1248eda14cbcSMatt Macy 
1249eda14cbcSMatt Macy 	VERIFY0(dsl_dataset_hold_obj_flags(pdd->dd_pool, obj,
1250eda14cbcSMatt Macy 	    DS_HOLD_FLAG_DECRYPT, FTAG, &ds));
1251eda14cbcSMatt Macy 	rrw_enter(&ds->ds_bp_rwlock, RW_READER, FTAG);
1252eda14cbcSMatt Macy 	bp = dsl_dataset_get_blkptr(ds);
1253eda14cbcSMatt Macy 	os = dmu_objset_create_impl(spa, ds, bp, doca->doca_type, tx);
1254eda14cbcSMatt Macy 	rrw_exit(&ds->ds_bp_rwlock, FTAG);
1255eda14cbcSMatt Macy 
1256eda14cbcSMatt Macy 	if (doca->doca_userfunc != NULL) {
1257eda14cbcSMatt Macy 		doca->doca_userfunc(os, doca->doca_userarg,
1258eda14cbcSMatt Macy 		    doca->doca_cred, tx);
1259eda14cbcSMatt Macy 	}
1260eda14cbcSMatt Macy 
1261eda14cbcSMatt Macy 	/*
1262eda14cbcSMatt Macy 	 * The doca_userfunc() may write out some data that needs to be
1263eda14cbcSMatt Macy 	 * encrypted if the dataset is encrypted (specifically the root
1264eda14cbcSMatt Macy 	 * directory).  This data must be written out before the encryption
1265eda14cbcSMatt Macy 	 * key mapping is removed by dsl_dataset_rele_flags().  Force the
1266eda14cbcSMatt Macy 	 * I/O to occur immediately by invoking the relevant sections of
1267eda14cbcSMatt Macy 	 * dsl_pool_sync().
1268eda14cbcSMatt Macy 	 */
1269eda14cbcSMatt Macy 	if (os->os_encrypted) {
1270eda14cbcSMatt Macy 		dsl_dataset_t *tmpds = NULL;
1271eda14cbcSMatt Macy 		boolean_t need_sync_done = B_FALSE;
1272eda14cbcSMatt Macy 
1273eda14cbcSMatt Macy 		mutex_enter(&ds->ds_lock);
1274eda14cbcSMatt Macy 		ds->ds_owner = FTAG;
1275eda14cbcSMatt Macy 		mutex_exit(&ds->ds_lock);
1276eda14cbcSMatt Macy 
1277eda14cbcSMatt Macy 		rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
1278eda14cbcSMatt Macy 		tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds,
1279eda14cbcSMatt Macy 		    tx->tx_txg);
1280eda14cbcSMatt Macy 		if (tmpds != NULL) {
1281eda14cbcSMatt Macy 			dsl_dataset_sync(ds, rzio, tx);
1282eda14cbcSMatt Macy 			need_sync_done = B_TRUE;
1283eda14cbcSMatt Macy 		}
1284eda14cbcSMatt Macy 		VERIFY0(zio_wait(rzio));
1285eda14cbcSMatt Macy 
12867877fdebSMatt Macy 		dmu_objset_sync_done(os, tx);
1287eda14cbcSMatt Macy 		taskq_wait(dp->dp_sync_taskq);
1288eda14cbcSMatt Macy 		if (txg_list_member(&dp->dp_dirty_datasets, ds, tx->tx_txg)) {
1289eda14cbcSMatt Macy 			ASSERT3P(ds->ds_key_mapping, !=, NULL);
1290eda14cbcSMatt Macy 			key_mapping_rele(spa, ds->ds_key_mapping, ds);
1291eda14cbcSMatt Macy 		}
1292eda14cbcSMatt Macy 
1293eda14cbcSMatt Macy 		rzio = zio_root(spa, NULL, NULL, ZIO_FLAG_MUSTSUCCEED);
1294eda14cbcSMatt Macy 		tmpds = txg_list_remove_this(&dp->dp_dirty_datasets, ds,
1295eda14cbcSMatt Macy 		    tx->tx_txg);
1296eda14cbcSMatt Macy 		if (tmpds != NULL) {
1297eda14cbcSMatt Macy 			dmu_buf_rele(ds->ds_dbuf, ds);
1298eda14cbcSMatt Macy 			dsl_dataset_sync(ds, rzio, tx);
1299eda14cbcSMatt Macy 		}
1300eda14cbcSMatt Macy 		VERIFY0(zio_wait(rzio));
1301eda14cbcSMatt Macy 
1302eda14cbcSMatt Macy 		if (need_sync_done) {
1303eda14cbcSMatt Macy 			ASSERT3P(ds->ds_key_mapping, !=, NULL);
1304eda14cbcSMatt Macy 			key_mapping_rele(spa, ds->ds_key_mapping, ds);
1305eda14cbcSMatt Macy 			dsl_dataset_sync_done(ds, tx);
1306*2a58b312SMartin Matuska 			dmu_buf_rele(ds->ds_dbuf, ds);
1307eda14cbcSMatt Macy 		}
1308eda14cbcSMatt Macy 
1309eda14cbcSMatt Macy 		mutex_enter(&ds->ds_lock);
1310eda14cbcSMatt Macy 		ds->ds_owner = NULL;
1311eda14cbcSMatt Macy 		mutex_exit(&ds->ds_lock);
1312eda14cbcSMatt Macy 	}
1313eda14cbcSMatt Macy 
1314eda14cbcSMatt Macy 	spa_history_log_internal_ds(ds, "create", tx, " ");
1315eda14cbcSMatt Macy 
1316eda14cbcSMatt Macy 	dsl_dataset_rele_flags(ds, DS_HOLD_FLAG_DECRYPT, FTAG);
1317eda14cbcSMatt Macy 	dsl_dir_rele(pdd, FTAG);
1318eda14cbcSMatt Macy }
1319eda14cbcSMatt Macy 
1320eda14cbcSMatt Macy int
1321eda14cbcSMatt Macy dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
1322eda14cbcSMatt Macy     dsl_crypto_params_t *dcp, dmu_objset_create_sync_func_t func, void *arg)
1323eda14cbcSMatt Macy {
1324eda14cbcSMatt Macy 	dmu_objset_create_arg_t doca;
1325eda14cbcSMatt Macy 	dsl_crypto_params_t tmp_dcp = { 0 };
1326eda14cbcSMatt Macy 
1327eda14cbcSMatt Macy 	doca.doca_name = name;
1328eda14cbcSMatt Macy 	doca.doca_cred = CRED();
1329eda14cbcSMatt Macy 	doca.doca_proc = curproc;
1330eda14cbcSMatt Macy 	doca.doca_flags = flags;
1331eda14cbcSMatt Macy 	doca.doca_userfunc = func;
1332eda14cbcSMatt Macy 	doca.doca_userarg = arg;
1333eda14cbcSMatt Macy 	doca.doca_type = type;
1334eda14cbcSMatt Macy 
1335eda14cbcSMatt Macy 	/*
1336eda14cbcSMatt Macy 	 * Some callers (mostly for testing) do not provide a dcp on their
1337eda14cbcSMatt Macy 	 * own but various code inside the sync task will require it to be
1338eda14cbcSMatt Macy 	 * allocated. Rather than adding NULL checks throughout this code
1339eda14cbcSMatt Macy 	 * or adding dummy dcp's to all of the callers we simply create a
1340eda14cbcSMatt Macy 	 * dummy one here and use that. This zero dcp will have the same
1341eda14cbcSMatt Macy 	 * effect as asking for inheritance of all encryption params.
1342eda14cbcSMatt Macy 	 */
1343eda14cbcSMatt Macy 	doca.doca_dcp = (dcp != NULL) ? dcp : &tmp_dcp;
1344eda14cbcSMatt Macy 
1345eda14cbcSMatt Macy 	int rv = dsl_sync_task(name,
1346eda14cbcSMatt Macy 	    dmu_objset_create_check, dmu_objset_create_sync, &doca,
1347eda14cbcSMatt Macy 	    6, ZFS_SPACE_CHECK_NORMAL);
1348eda14cbcSMatt Macy 
1349eda14cbcSMatt Macy 	if (rv == 0)
1350eda14cbcSMatt Macy 		zvol_create_minor(name);
1351eda14cbcSMatt Macy 	return (rv);
1352eda14cbcSMatt Macy }
1353eda14cbcSMatt Macy 
1354eda14cbcSMatt Macy typedef struct dmu_objset_clone_arg {
1355eda14cbcSMatt Macy 	const char *doca_clone;
1356eda14cbcSMatt Macy 	const char *doca_origin;
1357eda14cbcSMatt Macy 	cred_t *doca_cred;
1358eda14cbcSMatt Macy 	proc_t *doca_proc;
1359eda14cbcSMatt Macy } dmu_objset_clone_arg_t;
1360eda14cbcSMatt Macy 
1361eda14cbcSMatt Macy static int
1362eda14cbcSMatt Macy dmu_objset_clone_check(void *arg, dmu_tx_t *tx)
1363eda14cbcSMatt Macy {
1364eda14cbcSMatt Macy 	dmu_objset_clone_arg_t *doca = arg;
1365eda14cbcSMatt Macy 	dsl_dir_t *pdd;
1366eda14cbcSMatt Macy 	const char *tail;
1367eda14cbcSMatt Macy 	int error;
1368eda14cbcSMatt Macy 	dsl_dataset_t *origin;
1369eda14cbcSMatt Macy 	dsl_pool_t *dp = dmu_tx_pool(tx);
1370eda14cbcSMatt Macy 
1371eda14cbcSMatt Macy 	if (strchr(doca->doca_clone, '@') != NULL)
1372eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
1373eda14cbcSMatt Macy 
1374eda14cbcSMatt Macy 	if (strlen(doca->doca_clone) >= ZFS_MAX_DATASET_NAME_LEN)
1375eda14cbcSMatt Macy 		return (SET_ERROR(ENAMETOOLONG));
1376eda14cbcSMatt Macy 
1377eda14cbcSMatt Macy 	error = dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail);
1378eda14cbcSMatt Macy 	if (error != 0)
1379eda14cbcSMatt Macy 		return (error);
1380eda14cbcSMatt Macy 	if (tail == NULL) {
1381eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1382eda14cbcSMatt Macy 		return (SET_ERROR(EEXIST));
1383eda14cbcSMatt Macy 	}
1384eda14cbcSMatt Macy 
1385eda14cbcSMatt Macy 	error = dsl_fs_ss_limit_check(pdd, 1, ZFS_PROP_FILESYSTEM_LIMIT, NULL,
1386eda14cbcSMatt Macy 	    doca->doca_cred, doca->doca_proc);
1387eda14cbcSMatt Macy 	if (error != 0) {
1388eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1389eda14cbcSMatt Macy 		return (SET_ERROR(EDQUOT));
1390eda14cbcSMatt Macy 	}
1391eda14cbcSMatt Macy 
1392eda14cbcSMatt Macy 	error = dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin);
1393eda14cbcSMatt Macy 	if (error != 0) {
1394eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1395eda14cbcSMatt Macy 		return (error);
1396eda14cbcSMatt Macy 	}
1397eda14cbcSMatt Macy 
1398eda14cbcSMatt Macy 	/* You can only clone snapshots, not the head datasets. */
1399eda14cbcSMatt Macy 	if (!origin->ds_is_snapshot) {
1400eda14cbcSMatt Macy 		dsl_dataset_rele(origin, FTAG);
1401eda14cbcSMatt Macy 		dsl_dir_rele(pdd, FTAG);
1402eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
1403eda14cbcSMatt Macy 	}
1404eda14cbcSMatt Macy 
1405eda14cbcSMatt Macy 	dsl_dataset_rele(origin, FTAG);
1406eda14cbcSMatt Macy 	dsl_dir_rele(pdd, FTAG);
1407eda14cbcSMatt Macy 
1408eda14cbcSMatt Macy 	return (0);
1409eda14cbcSMatt Macy }
1410eda14cbcSMatt Macy 
1411eda14cbcSMatt Macy static void
1412eda14cbcSMatt Macy dmu_objset_clone_sync(void *arg, dmu_tx_t *tx)
1413eda14cbcSMatt Macy {
1414eda14cbcSMatt Macy 	dmu_objset_clone_arg_t *doca = arg;
1415eda14cbcSMatt Macy 	dsl_pool_t *dp = dmu_tx_pool(tx);
1416eda14cbcSMatt Macy 	dsl_dir_t *pdd;
1417eda14cbcSMatt Macy 	const char *tail;
1418eda14cbcSMatt Macy 	dsl_dataset_t *origin, *ds;
1419eda14cbcSMatt Macy 	uint64_t obj;
1420eda14cbcSMatt Macy 	char namebuf[ZFS_MAX_DATASET_NAME_LEN];
1421eda14cbcSMatt Macy 
1422eda14cbcSMatt Macy 	VERIFY0(dsl_dir_hold(dp, doca->doca_clone, FTAG, &pdd, &tail));
1423eda14cbcSMatt Macy 	VERIFY0(dsl_dataset_hold(dp, doca->doca_origin, FTAG, &origin));
1424eda14cbcSMatt Macy 
1425eda14cbcSMatt Macy 	obj = dsl_dataset_create_sync(pdd, tail, origin, 0,
1426eda14cbcSMatt Macy 	    doca->doca_cred, NULL, tx);
1427eda14cbcSMatt Macy 
1428eda14cbcSMatt Macy 	VERIFY0(dsl_dataset_hold_obj(pdd->dd_pool, obj, FTAG, &ds));
1429eda14cbcSMatt Macy 	dsl_dataset_name(origin, namebuf);
1430eda14cbcSMatt Macy 	spa_history_log_internal_ds(ds, "clone", tx,
1431eda14cbcSMatt Macy 	    "origin=%s (%llu)", namebuf, (u_longlong_t)origin->ds_object);
1432eda14cbcSMatt Macy 	dsl_dataset_rele(ds, FTAG);
1433eda14cbcSMatt Macy 	dsl_dataset_rele(origin, FTAG);
1434eda14cbcSMatt Macy 	dsl_dir_rele(pdd, FTAG);
1435eda14cbcSMatt Macy }
1436eda14cbcSMatt Macy 
1437eda14cbcSMatt Macy int
1438eda14cbcSMatt Macy dmu_objset_clone(const char *clone, const char *origin)
1439eda14cbcSMatt Macy {
1440eda14cbcSMatt Macy 	dmu_objset_clone_arg_t doca;
1441eda14cbcSMatt Macy 
1442eda14cbcSMatt Macy 	doca.doca_clone = clone;
1443eda14cbcSMatt Macy 	doca.doca_origin = origin;
1444eda14cbcSMatt Macy 	doca.doca_cred = CRED();
1445eda14cbcSMatt Macy 	doca.doca_proc = curproc;
1446eda14cbcSMatt Macy 
1447eda14cbcSMatt Macy 	int rv = dsl_sync_task(clone,
1448eda14cbcSMatt Macy 	    dmu_objset_clone_check, dmu_objset_clone_sync, &doca,
1449eda14cbcSMatt Macy 	    6, ZFS_SPACE_CHECK_NORMAL);
1450eda14cbcSMatt Macy 
1451eda14cbcSMatt Macy 	if (rv == 0)
1452eda14cbcSMatt Macy 		zvol_create_minor(clone);
1453eda14cbcSMatt Macy 
1454eda14cbcSMatt Macy 	return (rv);
1455eda14cbcSMatt Macy }
1456eda14cbcSMatt Macy 
1457eda14cbcSMatt Macy int
1458eda14cbcSMatt Macy dmu_objset_snapshot_one(const char *fsname, const char *snapname)
1459eda14cbcSMatt Macy {
1460eda14cbcSMatt Macy 	int err;
1461eda14cbcSMatt Macy 	char *longsnap = kmem_asprintf("%s@%s", fsname, snapname);
1462eda14cbcSMatt Macy 	nvlist_t *snaps = fnvlist_alloc();
1463eda14cbcSMatt Macy 
1464eda14cbcSMatt Macy 	fnvlist_add_boolean(snaps, longsnap);
1465eda14cbcSMatt Macy 	kmem_strfree(longsnap);
1466eda14cbcSMatt Macy 	err = dsl_dataset_snapshot(snaps, NULL, NULL);
1467eda14cbcSMatt Macy 	fnvlist_free(snaps);
1468eda14cbcSMatt Macy 	return (err);
1469eda14cbcSMatt Macy }
1470eda14cbcSMatt Macy 
1471eda14cbcSMatt Macy static void
1472eda14cbcSMatt Macy dmu_objset_upgrade_task_cb(void *data)
1473eda14cbcSMatt Macy {
1474eda14cbcSMatt Macy 	objset_t *os = data;
1475eda14cbcSMatt Macy 
1476eda14cbcSMatt Macy 	mutex_enter(&os->os_upgrade_lock);
1477eda14cbcSMatt Macy 	os->os_upgrade_status = EINTR;
1478eda14cbcSMatt Macy 	if (!os->os_upgrade_exit) {
14797877fdebSMatt Macy 		int status;
14807877fdebSMatt Macy 
1481eda14cbcSMatt Macy 		mutex_exit(&os->os_upgrade_lock);
1482eda14cbcSMatt Macy 
14837877fdebSMatt Macy 		status = os->os_upgrade_cb(os);
14847877fdebSMatt Macy 
1485eda14cbcSMatt Macy 		mutex_enter(&os->os_upgrade_lock);
14867877fdebSMatt Macy 
14877877fdebSMatt Macy 		os->os_upgrade_status = status;
1488eda14cbcSMatt Macy 	}
1489eda14cbcSMatt Macy 	os->os_upgrade_exit = B_TRUE;
1490eda14cbcSMatt Macy 	os->os_upgrade_id = 0;
1491eda14cbcSMatt Macy 	mutex_exit(&os->os_upgrade_lock);
1492eda14cbcSMatt Macy 	dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1493eda14cbcSMatt Macy }
1494eda14cbcSMatt Macy 
1495eda14cbcSMatt Macy static void
1496eda14cbcSMatt Macy dmu_objset_upgrade(objset_t *os, dmu_objset_upgrade_cb_t cb)
1497eda14cbcSMatt Macy {
1498eda14cbcSMatt Macy 	if (os->os_upgrade_id != 0)
1499eda14cbcSMatt Macy 		return;
1500eda14cbcSMatt Macy 
1501eda14cbcSMatt Macy 	ASSERT(dsl_pool_config_held(dmu_objset_pool(os)));
1502eda14cbcSMatt Macy 	dsl_dataset_long_hold(dmu_objset_ds(os), upgrade_tag);
1503eda14cbcSMatt Macy 
1504eda14cbcSMatt Macy 	mutex_enter(&os->os_upgrade_lock);
1505eda14cbcSMatt Macy 	if (os->os_upgrade_id == 0 && os->os_upgrade_status == 0) {
1506eda14cbcSMatt Macy 		os->os_upgrade_exit = B_FALSE;
1507eda14cbcSMatt Macy 		os->os_upgrade_cb = cb;
1508eda14cbcSMatt Macy 		os->os_upgrade_id = taskq_dispatch(
1509eda14cbcSMatt Macy 		    os->os_spa->spa_upgrade_taskq,
1510eda14cbcSMatt Macy 		    dmu_objset_upgrade_task_cb, os, TQ_SLEEP);
1511eda14cbcSMatt Macy 		if (os->os_upgrade_id == TASKQID_INVALID) {
1512eda14cbcSMatt Macy 			dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1513eda14cbcSMatt Macy 			os->os_upgrade_status = ENOMEM;
1514eda14cbcSMatt Macy 		}
15157877fdebSMatt Macy 	} else {
15167877fdebSMatt Macy 		dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1517eda14cbcSMatt Macy 	}
1518eda14cbcSMatt Macy 	mutex_exit(&os->os_upgrade_lock);
1519eda14cbcSMatt Macy }
1520eda14cbcSMatt Macy 
1521eda14cbcSMatt Macy static void
1522eda14cbcSMatt Macy dmu_objset_upgrade_stop(objset_t *os)
1523eda14cbcSMatt Macy {
1524eda14cbcSMatt Macy 	mutex_enter(&os->os_upgrade_lock);
1525eda14cbcSMatt Macy 	os->os_upgrade_exit = B_TRUE;
1526eda14cbcSMatt Macy 	if (os->os_upgrade_id != 0) {
1527eda14cbcSMatt Macy 		taskqid_t id = os->os_upgrade_id;
1528eda14cbcSMatt Macy 
1529eda14cbcSMatt Macy 		os->os_upgrade_id = 0;
1530eda14cbcSMatt Macy 		mutex_exit(&os->os_upgrade_lock);
1531eda14cbcSMatt Macy 
1532eda14cbcSMatt Macy 		if ((taskq_cancel_id(os->os_spa->spa_upgrade_taskq, id)) == 0) {
1533eda14cbcSMatt Macy 			dsl_dataset_long_rele(dmu_objset_ds(os), upgrade_tag);
1534eda14cbcSMatt Macy 		}
1535eda14cbcSMatt Macy 		txg_wait_synced(os->os_spa->spa_dsl_pool, 0);
1536eda14cbcSMatt Macy 	} else {
1537eda14cbcSMatt Macy 		mutex_exit(&os->os_upgrade_lock);
1538eda14cbcSMatt Macy 	}
1539eda14cbcSMatt Macy }
1540eda14cbcSMatt Macy 
1541eda14cbcSMatt Macy static void
1542eda14cbcSMatt Macy dmu_objset_sync_dnodes(multilist_sublist_t *list, dmu_tx_t *tx)
1543eda14cbcSMatt Macy {
1544eda14cbcSMatt Macy 	dnode_t *dn;
1545eda14cbcSMatt Macy 
1546eda14cbcSMatt Macy 	while ((dn = multilist_sublist_head(list)) != NULL) {
1547eda14cbcSMatt Macy 		ASSERT(dn->dn_object != DMU_META_DNODE_OBJECT);
1548eda14cbcSMatt Macy 		ASSERT(dn->dn_dbuf->db_data_pending);
1549eda14cbcSMatt Macy 		/*
1550eda14cbcSMatt Macy 		 * Initialize dn_zio outside dnode_sync() because the
1551eda14cbcSMatt Macy 		 * meta-dnode needs to set it outside dnode_sync().
1552eda14cbcSMatt Macy 		 */
1553eda14cbcSMatt Macy 		dn->dn_zio = dn->dn_dbuf->db_data_pending->dr_zio;
1554eda14cbcSMatt Macy 		ASSERT(dn->dn_zio);
1555eda14cbcSMatt Macy 
1556eda14cbcSMatt Macy 		ASSERT3U(dn->dn_nlevels, <=, DN_MAX_LEVELS);
1557eda14cbcSMatt Macy 		multilist_sublist_remove(list, dn);
1558eda14cbcSMatt Macy 
1559eda14cbcSMatt Macy 		/*
15607877fdebSMatt Macy 		 * See the comment above dnode_rele_task() for an explanation
15617877fdebSMatt Macy 		 * of why this dnode hold is always needed (even when not
15627877fdebSMatt Macy 		 * doing user accounting).
1563eda14cbcSMatt Macy 		 */
15643ff01b23SMartin Matuska 		multilist_t *newlist = &dn->dn_objset->os_synced_dnodes;
1565eda14cbcSMatt Macy 		(void) dnode_add_ref(dn, newlist);
1566eda14cbcSMatt Macy 		multilist_insert(newlist, dn);
1567eda14cbcSMatt Macy 
1568eda14cbcSMatt Macy 		dnode_sync(dn, tx);
1569eda14cbcSMatt Macy 	}
1570eda14cbcSMatt Macy }
1571eda14cbcSMatt Macy 
1572eda14cbcSMatt Macy static void
1573eda14cbcSMatt Macy dmu_objset_write_ready(zio_t *zio, arc_buf_t *abuf, void *arg)
1574eda14cbcSMatt Macy {
1575e92ffd9bSMartin Matuska 	(void) abuf;
1576eda14cbcSMatt Macy 	blkptr_t *bp = zio->io_bp;
1577eda14cbcSMatt Macy 	objset_t *os = arg;
1578eda14cbcSMatt Macy 	dnode_phys_t *dnp = &os->os_phys->os_meta_dnode;
1579eda14cbcSMatt Macy 	uint64_t fill = 0;
1580eda14cbcSMatt Macy 
1581eda14cbcSMatt Macy 	ASSERT(!BP_IS_EMBEDDED(bp));
1582eda14cbcSMatt Macy 	ASSERT3U(BP_GET_TYPE(bp), ==, DMU_OT_OBJSET);
1583eda14cbcSMatt Macy 	ASSERT0(BP_GET_LEVEL(bp));
1584eda14cbcSMatt Macy 
1585eda14cbcSMatt Macy 	/*
1586eda14cbcSMatt Macy 	 * Update rootbp fill count: it should be the number of objects
1587eda14cbcSMatt Macy 	 * allocated in the object set (not counting the "special"
1588eda14cbcSMatt Macy 	 * objects that are stored in the objset_phys_t -- the meta
1589eda14cbcSMatt Macy 	 * dnode and user/group/project accounting objects).
1590eda14cbcSMatt Macy 	 */
1591eda14cbcSMatt Macy 	for (int i = 0; i < dnp->dn_nblkptr; i++)
1592eda14cbcSMatt Macy 		fill += BP_GET_FILL(&dnp->dn_blkptr[i]);
1593eda14cbcSMatt Macy 
1594eda14cbcSMatt Macy 	BP_SET_FILL(bp, fill);
1595eda14cbcSMatt Macy 
1596eda14cbcSMatt Macy 	if (os->os_dsl_dataset != NULL)
1597eda14cbcSMatt Macy 		rrw_enter(&os->os_dsl_dataset->ds_bp_rwlock, RW_WRITER, FTAG);
1598eda14cbcSMatt Macy 	*os->os_rootbp = *bp;
1599eda14cbcSMatt Macy 	if (os->os_dsl_dataset != NULL)
1600eda14cbcSMatt Macy 		rrw_exit(&os->os_dsl_dataset->ds_bp_rwlock, FTAG);
1601eda14cbcSMatt Macy }
1602eda14cbcSMatt Macy 
1603eda14cbcSMatt Macy static void
1604eda14cbcSMatt Macy dmu_objset_write_done(zio_t *zio, arc_buf_t *abuf, void *arg)
1605eda14cbcSMatt Macy {
1606e92ffd9bSMartin Matuska 	(void) abuf;
1607eda14cbcSMatt Macy 	blkptr_t *bp = zio->io_bp;
1608eda14cbcSMatt Macy 	blkptr_t *bp_orig = &zio->io_bp_orig;
1609eda14cbcSMatt Macy 	objset_t *os = arg;
1610eda14cbcSMatt Macy 
1611eda14cbcSMatt Macy 	if (zio->io_flags & ZIO_FLAG_IO_REWRITE) {
1612eda14cbcSMatt Macy 		ASSERT(BP_EQUAL(bp, bp_orig));
1613eda14cbcSMatt Macy 	} else {
1614eda14cbcSMatt Macy 		dsl_dataset_t *ds = os->os_dsl_dataset;
1615eda14cbcSMatt Macy 		dmu_tx_t *tx = os->os_synctx;
1616eda14cbcSMatt Macy 
1617eda14cbcSMatt Macy 		(void) dsl_dataset_block_kill(ds, bp_orig, tx, B_TRUE);
1618eda14cbcSMatt Macy 		dsl_dataset_block_born(ds, bp, tx);
1619eda14cbcSMatt Macy 	}
1620eda14cbcSMatt Macy 	kmem_free(bp, sizeof (*bp));
1621eda14cbcSMatt Macy }
1622eda14cbcSMatt Macy 
1623eda14cbcSMatt Macy typedef struct sync_dnodes_arg {
1624eda14cbcSMatt Macy 	multilist_t *sda_list;
1625eda14cbcSMatt Macy 	int sda_sublist_idx;
1626eda14cbcSMatt Macy 	multilist_t *sda_newlist;
1627eda14cbcSMatt Macy 	dmu_tx_t *sda_tx;
1628eda14cbcSMatt Macy } sync_dnodes_arg_t;
1629eda14cbcSMatt Macy 
1630eda14cbcSMatt Macy static void
1631eda14cbcSMatt Macy sync_dnodes_task(void *arg)
1632eda14cbcSMatt Macy {
1633eda14cbcSMatt Macy 	sync_dnodes_arg_t *sda = arg;
1634eda14cbcSMatt Macy 
1635eda14cbcSMatt Macy 	multilist_sublist_t *ms =
1636eda14cbcSMatt Macy 	    multilist_sublist_lock(sda->sda_list, sda->sda_sublist_idx);
1637eda14cbcSMatt Macy 
1638eda14cbcSMatt Macy 	dmu_objset_sync_dnodes(ms, sda->sda_tx);
1639eda14cbcSMatt Macy 
1640eda14cbcSMatt Macy 	multilist_sublist_unlock(ms);
1641eda14cbcSMatt Macy 
1642eda14cbcSMatt Macy 	kmem_free(sda, sizeof (*sda));
1643eda14cbcSMatt Macy }
1644eda14cbcSMatt Macy 
1645eda14cbcSMatt Macy 
1646eda14cbcSMatt Macy /* called from dsl */
1647eda14cbcSMatt Macy void
1648eda14cbcSMatt Macy dmu_objset_sync(objset_t *os, zio_t *pio, dmu_tx_t *tx)
1649eda14cbcSMatt Macy {
1650eda14cbcSMatt Macy 	int txgoff;
1651eda14cbcSMatt Macy 	zbookmark_phys_t zb;
1652eda14cbcSMatt Macy 	zio_prop_t zp;
1653eda14cbcSMatt Macy 	zio_t *zio;
1654eda14cbcSMatt Macy 	list_t *list;
1655eda14cbcSMatt Macy 	dbuf_dirty_record_t *dr;
1656eda14cbcSMatt Macy 	int num_sublists;
1657eda14cbcSMatt Macy 	multilist_t *ml;
1658eda14cbcSMatt Macy 	blkptr_t *blkptr_copy = kmem_alloc(sizeof (*os->os_rootbp), KM_SLEEP);
1659eda14cbcSMatt Macy 	*blkptr_copy = *os->os_rootbp;
1660eda14cbcSMatt Macy 
166133b8c039SMartin Matuska 	dprintf_ds(os->os_dsl_dataset, "txg=%llu\n", (u_longlong_t)tx->tx_txg);
1662eda14cbcSMatt Macy 
1663eda14cbcSMatt Macy 	ASSERT(dmu_tx_is_syncing(tx));
1664eda14cbcSMatt Macy 	/* XXX the write_done callback should really give us the tx... */
1665eda14cbcSMatt Macy 	os->os_synctx = tx;
1666eda14cbcSMatt Macy 
1667eda14cbcSMatt Macy 	if (os->os_dsl_dataset == NULL) {
1668eda14cbcSMatt Macy 		/*
1669eda14cbcSMatt Macy 		 * This is the MOS.  If we have upgraded,
1670eda14cbcSMatt Macy 		 * spa_max_replication() could change, so reset
1671eda14cbcSMatt Macy 		 * os_copies here.
1672eda14cbcSMatt Macy 		 */
1673eda14cbcSMatt Macy 		os->os_copies = spa_max_replication(os->os_spa);
1674eda14cbcSMatt Macy 	}
1675eda14cbcSMatt Macy 
1676eda14cbcSMatt Macy 	/*
1677eda14cbcSMatt Macy 	 * Create the root block IO
1678eda14cbcSMatt Macy 	 */
1679eda14cbcSMatt Macy 	SET_BOOKMARK(&zb, os->os_dsl_dataset ?
1680eda14cbcSMatt Macy 	    os->os_dsl_dataset->ds_object : DMU_META_OBJSET,
1681eda14cbcSMatt Macy 	    ZB_ROOT_OBJECT, ZB_ROOT_LEVEL, ZB_ROOT_BLKID);
1682eda14cbcSMatt Macy 	arc_release(os->os_phys_buf, &os->os_phys_buf);
1683eda14cbcSMatt Macy 
1684eda14cbcSMatt Macy 	dmu_write_policy(os, NULL, 0, 0, &zp);
1685eda14cbcSMatt Macy 
1686eda14cbcSMatt Macy 	/*
1687eda14cbcSMatt Macy 	 * If we are either claiming the ZIL or doing a raw receive, write
1688eda14cbcSMatt Macy 	 * out the os_phys_buf raw. Neither of these actions will effect the
1689eda14cbcSMatt Macy 	 * MAC at this point.
1690eda14cbcSMatt Macy 	 */
1691eda14cbcSMatt Macy 	if (os->os_raw_receive ||
1692eda14cbcSMatt Macy 	    os->os_next_write_raw[tx->tx_txg & TXG_MASK]) {
1693eda14cbcSMatt Macy 		ASSERT(os->os_encrypted);
1694eda14cbcSMatt Macy 		arc_convert_to_raw(os->os_phys_buf,
1695eda14cbcSMatt Macy 		    os->os_dsl_dataset->ds_object, ZFS_HOST_BYTEORDER,
1696eda14cbcSMatt Macy 		    DMU_OT_OBJSET, NULL, NULL, NULL);
1697eda14cbcSMatt Macy 	}
1698eda14cbcSMatt Macy 
1699eda14cbcSMatt Macy 	zio = arc_write(pio, os->os_spa, tx->tx_txg,
170015f0b8c3SMartin Matuska 	    blkptr_copy, os->os_phys_buf, B_FALSE, dmu_os_is_l2cacheable(os),
1701eda14cbcSMatt Macy 	    &zp, dmu_objset_write_ready, NULL, NULL, dmu_objset_write_done,
1702eda14cbcSMatt Macy 	    os, ZIO_PRIORITY_ASYNC_WRITE, ZIO_FLAG_MUSTSUCCEED, &zb);
1703eda14cbcSMatt Macy 
1704eda14cbcSMatt Macy 	/*
1705eda14cbcSMatt Macy 	 * Sync special dnodes - the parent IO for the sync is the root block
1706eda14cbcSMatt Macy 	 */
1707eda14cbcSMatt Macy 	DMU_META_DNODE(os)->dn_zio = zio;
1708eda14cbcSMatt Macy 	dnode_sync(DMU_META_DNODE(os), tx);
1709eda14cbcSMatt Macy 
1710eda14cbcSMatt Macy 	os->os_phys->os_flags = os->os_flags;
1711eda14cbcSMatt Macy 
1712eda14cbcSMatt Macy 	if (DMU_USERUSED_DNODE(os) &&
1713eda14cbcSMatt Macy 	    DMU_USERUSED_DNODE(os)->dn_type != DMU_OT_NONE) {
1714eda14cbcSMatt Macy 		DMU_USERUSED_DNODE(os)->dn_zio = zio;
1715eda14cbcSMatt Macy 		dnode_sync(DMU_USERUSED_DNODE(os), tx);
1716eda14cbcSMatt Macy 		DMU_GROUPUSED_DNODE(os)->dn_zio = zio;
1717eda14cbcSMatt Macy 		dnode_sync(DMU_GROUPUSED_DNODE(os), tx);
1718eda14cbcSMatt Macy 	}
1719eda14cbcSMatt Macy 
1720eda14cbcSMatt Macy 	if (DMU_PROJECTUSED_DNODE(os) &&
1721eda14cbcSMatt Macy 	    DMU_PROJECTUSED_DNODE(os)->dn_type != DMU_OT_NONE) {
1722eda14cbcSMatt Macy 		DMU_PROJECTUSED_DNODE(os)->dn_zio = zio;
1723eda14cbcSMatt Macy 		dnode_sync(DMU_PROJECTUSED_DNODE(os), tx);
1724eda14cbcSMatt Macy 	}
1725eda14cbcSMatt Macy 
1726eda14cbcSMatt Macy 	txgoff = tx->tx_txg & TXG_MASK;
1727eda14cbcSMatt Macy 
1728eda14cbcSMatt Macy 	/*
1729eda14cbcSMatt Macy 	 * We must create the list here because it uses the
1730eda14cbcSMatt Macy 	 * dn_dirty_link[] of this txg.  But it may already
1731eda14cbcSMatt Macy 	 * exist because we call dsl_dataset_sync() twice per txg.
1732eda14cbcSMatt Macy 	 */
17333ff01b23SMartin Matuska 	if (os->os_synced_dnodes.ml_sublists == NULL) {
17343ff01b23SMartin Matuska 		multilist_create(&os->os_synced_dnodes, sizeof (dnode_t),
1735eda14cbcSMatt Macy 		    offsetof(dnode_t, dn_dirty_link[txgoff]),
1736eda14cbcSMatt Macy 		    dnode_multilist_index_func);
1737eda14cbcSMatt Macy 	} else {
17383ff01b23SMartin Matuska 		ASSERT3U(os->os_synced_dnodes.ml_offset, ==,
1739eda14cbcSMatt Macy 		    offsetof(dnode_t, dn_dirty_link[txgoff]));
1740eda14cbcSMatt Macy 	}
1741eda14cbcSMatt Macy 
17423ff01b23SMartin Matuska 	ml = &os->os_dirty_dnodes[txgoff];
1743eda14cbcSMatt Macy 	num_sublists = multilist_get_num_sublists(ml);
1744eda14cbcSMatt Macy 	for (int i = 0; i < num_sublists; i++) {
1745eda14cbcSMatt Macy 		if (multilist_sublist_is_empty_idx(ml, i))
1746eda14cbcSMatt Macy 			continue;
1747eda14cbcSMatt Macy 		sync_dnodes_arg_t *sda = kmem_alloc(sizeof (*sda), KM_SLEEP);
1748eda14cbcSMatt Macy 		sda->sda_list = ml;
1749eda14cbcSMatt Macy 		sda->sda_sublist_idx = i;
1750eda14cbcSMatt Macy 		sda->sda_tx = tx;
1751eda14cbcSMatt Macy 		(void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq,
1752eda14cbcSMatt Macy 		    sync_dnodes_task, sda, 0);
1753eda14cbcSMatt Macy 		/* callback frees sda */
1754eda14cbcSMatt Macy 	}
1755eda14cbcSMatt Macy 	taskq_wait(dmu_objset_pool(os)->dp_sync_taskq);
1756eda14cbcSMatt Macy 
1757eda14cbcSMatt Macy 	list = &DMU_META_DNODE(os)->dn_dirty_records[txgoff];
1758eda14cbcSMatt Macy 	while ((dr = list_head(list)) != NULL) {
1759eda14cbcSMatt Macy 		ASSERT0(dr->dr_dbuf->db_level);
1760eda14cbcSMatt Macy 		list_remove(list, dr);
1761eda14cbcSMatt Macy 		zio_nowait(dr->dr_zio);
1762eda14cbcSMatt Macy 	}
1763eda14cbcSMatt Macy 
1764eda14cbcSMatt Macy 	/* Enable dnode backfill if enough objects have been freed. */
1765eda14cbcSMatt Macy 	if (os->os_freed_dnodes >= dmu_rescan_dnode_threshold) {
1766eda14cbcSMatt Macy 		os->os_rescan_dnodes = B_TRUE;
1767eda14cbcSMatt Macy 		os->os_freed_dnodes = 0;
1768eda14cbcSMatt Macy 	}
1769eda14cbcSMatt Macy 
1770eda14cbcSMatt Macy 	/*
1771eda14cbcSMatt Macy 	 * Free intent log blocks up to this tx.
1772eda14cbcSMatt Macy 	 */
1773eda14cbcSMatt Macy 	zil_sync(os->os_zil, tx);
1774eda14cbcSMatt Macy 	os->os_phys->os_zil_header = os->os_zil_header;
1775eda14cbcSMatt Macy 	zio_nowait(zio);
1776eda14cbcSMatt Macy }
1777eda14cbcSMatt Macy 
1778eda14cbcSMatt Macy boolean_t
1779eda14cbcSMatt Macy dmu_objset_is_dirty(objset_t *os, uint64_t txg)
1780eda14cbcSMatt Macy {
17813ff01b23SMartin Matuska 	return (!multilist_is_empty(&os->os_dirty_dnodes[txg & TXG_MASK]));
1782eda14cbcSMatt Macy }
1783eda14cbcSMatt Macy 
1784eda14cbcSMatt Macy static file_info_cb_t *file_cbs[DMU_OST_NUMTYPES];
1785eda14cbcSMatt Macy 
1786eda14cbcSMatt Macy void
1787eda14cbcSMatt Macy dmu_objset_register_type(dmu_objset_type_t ost, file_info_cb_t *cb)
1788eda14cbcSMatt Macy {
1789eda14cbcSMatt Macy 	file_cbs[ost] = cb;
1790eda14cbcSMatt Macy }
1791eda14cbcSMatt Macy 
1792eda14cbcSMatt Macy int
1793eda14cbcSMatt Macy dmu_get_file_info(objset_t *os, dmu_object_type_t bonustype, const void *data,
1794eda14cbcSMatt Macy     zfs_file_info_t *zfi)
1795eda14cbcSMatt Macy {
1796eda14cbcSMatt Macy 	file_info_cb_t *cb = file_cbs[os->os_phys->os_type];
1797eda14cbcSMatt Macy 	if (cb == NULL)
1798eda14cbcSMatt Macy 		return (EINVAL);
1799eda14cbcSMatt Macy 	return (cb(bonustype, data, zfi));
1800eda14cbcSMatt Macy }
1801eda14cbcSMatt Macy 
1802eda14cbcSMatt Macy boolean_t
1803eda14cbcSMatt Macy dmu_objset_userused_enabled(objset_t *os)
1804eda14cbcSMatt Macy {
1805eda14cbcSMatt Macy 	return (spa_version(os->os_spa) >= SPA_VERSION_USERSPACE &&
1806eda14cbcSMatt Macy 	    file_cbs[os->os_phys->os_type] != NULL &&
1807eda14cbcSMatt Macy 	    DMU_USERUSED_DNODE(os) != NULL);
1808eda14cbcSMatt Macy }
1809eda14cbcSMatt Macy 
1810eda14cbcSMatt Macy boolean_t
1811eda14cbcSMatt Macy dmu_objset_userobjused_enabled(objset_t *os)
1812eda14cbcSMatt Macy {
1813eda14cbcSMatt Macy 	return (dmu_objset_userused_enabled(os) &&
1814eda14cbcSMatt Macy 	    spa_feature_is_enabled(os->os_spa, SPA_FEATURE_USEROBJ_ACCOUNTING));
1815eda14cbcSMatt Macy }
1816eda14cbcSMatt Macy 
1817eda14cbcSMatt Macy boolean_t
1818eda14cbcSMatt Macy dmu_objset_projectquota_enabled(objset_t *os)
1819eda14cbcSMatt Macy {
1820eda14cbcSMatt Macy 	return (file_cbs[os->os_phys->os_type] != NULL &&
1821eda14cbcSMatt Macy 	    DMU_PROJECTUSED_DNODE(os) != NULL &&
1822eda14cbcSMatt Macy 	    spa_feature_is_enabled(os->os_spa, SPA_FEATURE_PROJECT_QUOTA));
1823eda14cbcSMatt Macy }
1824eda14cbcSMatt Macy 
1825eda14cbcSMatt Macy typedef struct userquota_node {
1826eda14cbcSMatt Macy 	/* must be in the first filed, see userquota_update_cache() */
1827eda14cbcSMatt Macy 	char		uqn_id[20 + DMU_OBJACCT_PREFIX_LEN];
1828eda14cbcSMatt Macy 	int64_t		uqn_delta;
1829eda14cbcSMatt Macy 	avl_node_t	uqn_node;
1830eda14cbcSMatt Macy } userquota_node_t;
1831eda14cbcSMatt Macy 
1832eda14cbcSMatt Macy typedef struct userquota_cache {
1833eda14cbcSMatt Macy 	avl_tree_t uqc_user_deltas;
1834eda14cbcSMatt Macy 	avl_tree_t uqc_group_deltas;
1835eda14cbcSMatt Macy 	avl_tree_t uqc_project_deltas;
1836eda14cbcSMatt Macy } userquota_cache_t;
1837eda14cbcSMatt Macy 
1838eda14cbcSMatt Macy static int
1839eda14cbcSMatt Macy userquota_compare(const void *l, const void *r)
1840eda14cbcSMatt Macy {
1841eda14cbcSMatt Macy 	const userquota_node_t *luqn = l;
1842eda14cbcSMatt Macy 	const userquota_node_t *ruqn = r;
1843eda14cbcSMatt Macy 	int rv;
1844eda14cbcSMatt Macy 
1845eda14cbcSMatt Macy 	/*
1846eda14cbcSMatt Macy 	 * NB: can only access uqn_id because userquota_update_cache() doesn't
1847eda14cbcSMatt Macy 	 * pass in an entire userquota_node_t.
1848eda14cbcSMatt Macy 	 */
1849eda14cbcSMatt Macy 	rv = strcmp(luqn->uqn_id, ruqn->uqn_id);
1850eda14cbcSMatt Macy 
1851eda14cbcSMatt Macy 	return (TREE_ISIGN(rv));
1852eda14cbcSMatt Macy }
1853eda14cbcSMatt Macy 
1854eda14cbcSMatt Macy static void
1855eda14cbcSMatt Macy do_userquota_cacheflush(objset_t *os, userquota_cache_t *cache, dmu_tx_t *tx)
1856eda14cbcSMatt Macy {
1857eda14cbcSMatt Macy 	void *cookie;
1858eda14cbcSMatt Macy 	userquota_node_t *uqn;
1859eda14cbcSMatt Macy 
1860eda14cbcSMatt Macy 	ASSERT(dmu_tx_is_syncing(tx));
1861eda14cbcSMatt Macy 
1862eda14cbcSMatt Macy 	cookie = NULL;
1863eda14cbcSMatt Macy 	while ((uqn = avl_destroy_nodes(&cache->uqc_user_deltas,
1864eda14cbcSMatt Macy 	    &cookie)) != NULL) {
1865eda14cbcSMatt Macy 		/*
1866eda14cbcSMatt Macy 		 * os_userused_lock protects against concurrent calls to
1867eda14cbcSMatt Macy 		 * zap_increment_int().  It's needed because zap_increment_int()
1868eda14cbcSMatt Macy 		 * is not thread-safe (i.e. not atomic).
1869eda14cbcSMatt Macy 		 */
1870eda14cbcSMatt Macy 		mutex_enter(&os->os_userused_lock);
1871eda14cbcSMatt Macy 		VERIFY0(zap_increment(os, DMU_USERUSED_OBJECT,
1872eda14cbcSMatt Macy 		    uqn->uqn_id, uqn->uqn_delta, tx));
1873eda14cbcSMatt Macy 		mutex_exit(&os->os_userused_lock);
1874eda14cbcSMatt Macy 		kmem_free(uqn, sizeof (*uqn));
1875eda14cbcSMatt Macy 	}
1876eda14cbcSMatt Macy 	avl_destroy(&cache->uqc_user_deltas);
1877eda14cbcSMatt Macy 
1878eda14cbcSMatt Macy 	cookie = NULL;
1879eda14cbcSMatt Macy 	while ((uqn = avl_destroy_nodes(&cache->uqc_group_deltas,
1880eda14cbcSMatt Macy 	    &cookie)) != NULL) {
1881eda14cbcSMatt Macy 		mutex_enter(&os->os_userused_lock);
1882eda14cbcSMatt Macy 		VERIFY0(zap_increment(os, DMU_GROUPUSED_OBJECT,
1883eda14cbcSMatt Macy 		    uqn->uqn_id, uqn->uqn_delta, tx));
1884eda14cbcSMatt Macy 		mutex_exit(&os->os_userused_lock);
1885eda14cbcSMatt Macy 		kmem_free(uqn, sizeof (*uqn));
1886eda14cbcSMatt Macy 	}
1887eda14cbcSMatt Macy 	avl_destroy(&cache->uqc_group_deltas);
1888eda14cbcSMatt Macy 
1889eda14cbcSMatt Macy 	if (dmu_objset_projectquota_enabled(os)) {
1890eda14cbcSMatt Macy 		cookie = NULL;
1891eda14cbcSMatt Macy 		while ((uqn = avl_destroy_nodes(&cache->uqc_project_deltas,
1892eda14cbcSMatt Macy 		    &cookie)) != NULL) {
1893eda14cbcSMatt Macy 			mutex_enter(&os->os_userused_lock);
1894eda14cbcSMatt Macy 			VERIFY0(zap_increment(os, DMU_PROJECTUSED_OBJECT,
1895eda14cbcSMatt Macy 			    uqn->uqn_id, uqn->uqn_delta, tx));
1896eda14cbcSMatt Macy 			mutex_exit(&os->os_userused_lock);
1897eda14cbcSMatt Macy 			kmem_free(uqn, sizeof (*uqn));
1898eda14cbcSMatt Macy 		}
1899eda14cbcSMatt Macy 		avl_destroy(&cache->uqc_project_deltas);
1900eda14cbcSMatt Macy 	}
1901eda14cbcSMatt Macy }
1902eda14cbcSMatt Macy 
1903eda14cbcSMatt Macy static void
1904eda14cbcSMatt Macy userquota_update_cache(avl_tree_t *avl, const char *id, int64_t delta)
1905eda14cbcSMatt Macy {
1906eda14cbcSMatt Macy 	userquota_node_t *uqn;
1907eda14cbcSMatt Macy 	avl_index_t idx;
1908eda14cbcSMatt Macy 
1909eda14cbcSMatt Macy 	ASSERT(strlen(id) < sizeof (uqn->uqn_id));
1910eda14cbcSMatt Macy 	/*
1911eda14cbcSMatt Macy 	 * Use id directly for searching because uqn_id is the first field of
1912eda14cbcSMatt Macy 	 * userquota_node_t and fields after uqn_id won't be accessed in
1913eda14cbcSMatt Macy 	 * avl_find().
1914eda14cbcSMatt Macy 	 */
1915eda14cbcSMatt Macy 	uqn = avl_find(avl, (const void *)id, &idx);
1916eda14cbcSMatt Macy 	if (uqn == NULL) {
1917eda14cbcSMatt Macy 		uqn = kmem_zalloc(sizeof (*uqn), KM_SLEEP);
1918eda14cbcSMatt Macy 		strlcpy(uqn->uqn_id, id, sizeof (uqn->uqn_id));
1919eda14cbcSMatt Macy 		avl_insert(avl, uqn, idx);
1920eda14cbcSMatt Macy 	}
1921eda14cbcSMatt Macy 	uqn->uqn_delta += delta;
1922eda14cbcSMatt Macy }
1923eda14cbcSMatt Macy 
1924eda14cbcSMatt Macy static void
1925eda14cbcSMatt Macy do_userquota_update(objset_t *os, userquota_cache_t *cache, uint64_t used,
1926eda14cbcSMatt Macy     uint64_t flags, uint64_t user, uint64_t group, uint64_t project,
1927eda14cbcSMatt Macy     boolean_t subtract)
1928eda14cbcSMatt Macy {
1929eda14cbcSMatt Macy 	if (flags & DNODE_FLAG_USERUSED_ACCOUNTED) {
1930eda14cbcSMatt Macy 		int64_t delta = DNODE_MIN_SIZE + used;
1931eda14cbcSMatt Macy 		char name[20];
1932eda14cbcSMatt Macy 
1933eda14cbcSMatt Macy 		if (subtract)
1934eda14cbcSMatt Macy 			delta = -delta;
1935eda14cbcSMatt Macy 
1936eda14cbcSMatt Macy 		(void) snprintf(name, sizeof (name), "%llx", (longlong_t)user);
1937eda14cbcSMatt Macy 		userquota_update_cache(&cache->uqc_user_deltas, name, delta);
1938eda14cbcSMatt Macy 
1939eda14cbcSMatt Macy 		(void) snprintf(name, sizeof (name), "%llx", (longlong_t)group);
1940eda14cbcSMatt Macy 		userquota_update_cache(&cache->uqc_group_deltas, name, delta);
1941eda14cbcSMatt Macy 
1942eda14cbcSMatt Macy 		if (dmu_objset_projectquota_enabled(os)) {
1943eda14cbcSMatt Macy 			(void) snprintf(name, sizeof (name), "%llx",
1944eda14cbcSMatt Macy 			    (longlong_t)project);
1945eda14cbcSMatt Macy 			userquota_update_cache(&cache->uqc_project_deltas,
1946eda14cbcSMatt Macy 			    name, delta);
1947eda14cbcSMatt Macy 		}
1948eda14cbcSMatt Macy 	}
1949eda14cbcSMatt Macy }
1950eda14cbcSMatt Macy 
1951eda14cbcSMatt Macy static void
1952eda14cbcSMatt Macy do_userobjquota_update(objset_t *os, userquota_cache_t *cache, uint64_t flags,
1953eda14cbcSMatt Macy     uint64_t user, uint64_t group, uint64_t project, boolean_t subtract)
1954eda14cbcSMatt Macy {
1955eda14cbcSMatt Macy 	if (flags & DNODE_FLAG_USEROBJUSED_ACCOUNTED) {
1956eda14cbcSMatt Macy 		char name[20 + DMU_OBJACCT_PREFIX_LEN];
1957eda14cbcSMatt Macy 		int delta = subtract ? -1 : 1;
1958eda14cbcSMatt Macy 
1959eda14cbcSMatt Macy 		(void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx",
1960eda14cbcSMatt Macy 		    (longlong_t)user);
1961eda14cbcSMatt Macy 		userquota_update_cache(&cache->uqc_user_deltas, name, delta);
1962eda14cbcSMatt Macy 
1963eda14cbcSMatt Macy 		(void) snprintf(name, sizeof (name), DMU_OBJACCT_PREFIX "%llx",
1964eda14cbcSMatt Macy 		    (longlong_t)group);
1965eda14cbcSMatt Macy 		userquota_update_cache(&cache->uqc_group_deltas, name, delta);
1966eda14cbcSMatt Macy 
1967eda14cbcSMatt Macy 		if (dmu_objset_projectquota_enabled(os)) {
1968eda14cbcSMatt Macy 			(void) snprintf(name, sizeof (name),
1969eda14cbcSMatt Macy 			    DMU_OBJACCT_PREFIX "%llx", (longlong_t)project);
1970eda14cbcSMatt Macy 			userquota_update_cache(&cache->uqc_project_deltas,
1971eda14cbcSMatt Macy 			    name, delta);
1972eda14cbcSMatt Macy 		}
1973eda14cbcSMatt Macy 	}
1974eda14cbcSMatt Macy }
1975eda14cbcSMatt Macy 
1976eda14cbcSMatt Macy typedef struct userquota_updates_arg {
1977eda14cbcSMatt Macy 	objset_t *uua_os;
1978eda14cbcSMatt Macy 	int uua_sublist_idx;
1979eda14cbcSMatt Macy 	dmu_tx_t *uua_tx;
1980eda14cbcSMatt Macy } userquota_updates_arg_t;
1981eda14cbcSMatt Macy 
1982eda14cbcSMatt Macy static void
1983eda14cbcSMatt Macy userquota_updates_task(void *arg)
1984eda14cbcSMatt Macy {
1985eda14cbcSMatt Macy 	userquota_updates_arg_t *uua = arg;
1986eda14cbcSMatt Macy 	objset_t *os = uua->uua_os;
1987eda14cbcSMatt Macy 	dmu_tx_t *tx = uua->uua_tx;
1988eda14cbcSMatt Macy 	dnode_t *dn;
1989eda14cbcSMatt Macy 	userquota_cache_t cache = { { 0 } };
1990eda14cbcSMatt Macy 
1991eda14cbcSMatt Macy 	multilist_sublist_t *list =
19923ff01b23SMartin Matuska 	    multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx);
1993eda14cbcSMatt Macy 
1994eda14cbcSMatt Macy 	ASSERT(multilist_sublist_head(list) == NULL ||
1995eda14cbcSMatt Macy 	    dmu_objset_userused_enabled(os));
1996eda14cbcSMatt Macy 	avl_create(&cache.uqc_user_deltas, userquota_compare,
1997eda14cbcSMatt Macy 	    sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node));
1998eda14cbcSMatt Macy 	avl_create(&cache.uqc_group_deltas, userquota_compare,
1999eda14cbcSMatt Macy 	    sizeof (userquota_node_t), offsetof(userquota_node_t, uqn_node));
2000eda14cbcSMatt Macy 	if (dmu_objset_projectquota_enabled(os))
2001eda14cbcSMatt Macy 		avl_create(&cache.uqc_project_deltas, userquota_compare,
2002eda14cbcSMatt Macy 		    sizeof (userquota_node_t), offsetof(userquota_node_t,
2003eda14cbcSMatt Macy 		    uqn_node));
2004eda14cbcSMatt Macy 
2005eda14cbcSMatt Macy 	while ((dn = multilist_sublist_head(list)) != NULL) {
2006eda14cbcSMatt Macy 		int flags;
2007eda14cbcSMatt Macy 		ASSERT(!DMU_OBJECT_IS_SPECIAL(dn->dn_object));
2008eda14cbcSMatt Macy 		ASSERT(dn->dn_phys->dn_type == DMU_OT_NONE ||
2009eda14cbcSMatt Macy 		    dn->dn_phys->dn_flags &
2010eda14cbcSMatt Macy 		    DNODE_FLAG_USERUSED_ACCOUNTED);
2011eda14cbcSMatt Macy 
2012eda14cbcSMatt Macy 		flags = dn->dn_id_flags;
2013eda14cbcSMatt Macy 		ASSERT(flags);
2014eda14cbcSMatt Macy 		if (flags & DN_ID_OLD_EXIST)  {
2015eda14cbcSMatt Macy 			do_userquota_update(os, &cache, dn->dn_oldused,
2016eda14cbcSMatt Macy 			    dn->dn_oldflags, dn->dn_olduid, dn->dn_oldgid,
2017eda14cbcSMatt Macy 			    dn->dn_oldprojid, B_TRUE);
2018eda14cbcSMatt Macy 			do_userobjquota_update(os, &cache, dn->dn_oldflags,
2019eda14cbcSMatt Macy 			    dn->dn_olduid, dn->dn_oldgid,
2020eda14cbcSMatt Macy 			    dn->dn_oldprojid, B_TRUE);
2021eda14cbcSMatt Macy 		}
2022eda14cbcSMatt Macy 		if (flags & DN_ID_NEW_EXIST) {
2023eda14cbcSMatt Macy 			do_userquota_update(os, &cache,
2024eda14cbcSMatt Macy 			    DN_USED_BYTES(dn->dn_phys), dn->dn_phys->dn_flags,
2025eda14cbcSMatt Macy 			    dn->dn_newuid, dn->dn_newgid,
2026eda14cbcSMatt Macy 			    dn->dn_newprojid, B_FALSE);
2027eda14cbcSMatt Macy 			do_userobjquota_update(os, &cache,
2028eda14cbcSMatt Macy 			    dn->dn_phys->dn_flags, dn->dn_newuid, dn->dn_newgid,
2029eda14cbcSMatt Macy 			    dn->dn_newprojid, B_FALSE);
2030eda14cbcSMatt Macy 		}
2031eda14cbcSMatt Macy 
2032eda14cbcSMatt Macy 		mutex_enter(&dn->dn_mtx);
2033eda14cbcSMatt Macy 		dn->dn_oldused = 0;
2034eda14cbcSMatt Macy 		dn->dn_oldflags = 0;
2035eda14cbcSMatt Macy 		if (dn->dn_id_flags & DN_ID_NEW_EXIST) {
2036eda14cbcSMatt Macy 			dn->dn_olduid = dn->dn_newuid;
2037eda14cbcSMatt Macy 			dn->dn_oldgid = dn->dn_newgid;
2038eda14cbcSMatt Macy 			dn->dn_oldprojid = dn->dn_newprojid;
2039eda14cbcSMatt Macy 			dn->dn_id_flags |= DN_ID_OLD_EXIST;
2040eda14cbcSMatt Macy 			if (dn->dn_bonuslen == 0)
2041eda14cbcSMatt Macy 				dn->dn_id_flags |= DN_ID_CHKED_SPILL;
2042eda14cbcSMatt Macy 			else
2043eda14cbcSMatt Macy 				dn->dn_id_flags |= DN_ID_CHKED_BONUS;
2044eda14cbcSMatt Macy 		}
2045eda14cbcSMatt Macy 		dn->dn_id_flags &= ~(DN_ID_NEW_EXIST);
2046eda14cbcSMatt Macy 		mutex_exit(&dn->dn_mtx);
2047eda14cbcSMatt Macy 
2048eda14cbcSMatt Macy 		multilist_sublist_remove(list, dn);
20493ff01b23SMartin Matuska 		dnode_rele(dn, &os->os_synced_dnodes);
2050eda14cbcSMatt Macy 	}
2051eda14cbcSMatt Macy 	do_userquota_cacheflush(os, &cache, tx);
2052eda14cbcSMatt Macy 	multilist_sublist_unlock(list);
2053eda14cbcSMatt Macy 	kmem_free(uua, sizeof (*uua));
2054eda14cbcSMatt Macy }
2055eda14cbcSMatt Macy 
20567877fdebSMatt Macy /*
20577877fdebSMatt Macy  * Release dnode holds from dmu_objset_sync_dnodes().  When the dnode is being
20587877fdebSMatt Macy  * synced (i.e. we have issued the zio's for blocks in the dnode), it can't be
20597877fdebSMatt Macy  * evicted because the block containing the dnode can't be evicted until it is
20607877fdebSMatt Macy  * written out.  However, this hold is necessary to prevent the dnode_t from
20617877fdebSMatt Macy  * being moved (via dnode_move()) while it's still referenced by
20627877fdebSMatt Macy  * dbuf_dirty_record_t:dr_dnode.  And dr_dnode is needed for
20637877fdebSMatt Macy  * dirty_lightweight_leaf-type dirty records.
20647877fdebSMatt Macy  *
20657877fdebSMatt Macy  * If we are doing user-object accounting, the dnode_rele() happens from
20667877fdebSMatt Macy  * userquota_updates_task() instead.
20677877fdebSMatt Macy  */
20687877fdebSMatt Macy static void
20697877fdebSMatt Macy dnode_rele_task(void *arg)
2070eda14cbcSMatt Macy {
20717877fdebSMatt Macy 	userquota_updates_arg_t *uua = arg;
20727877fdebSMatt Macy 	objset_t *os = uua->uua_os;
2073eda14cbcSMatt Macy 
20747877fdebSMatt Macy 	multilist_sublist_t *list =
20753ff01b23SMartin Matuska 	    multilist_sublist_lock(&os->os_synced_dnodes, uua->uua_sublist_idx);
20767877fdebSMatt Macy 
20777877fdebSMatt Macy 	dnode_t *dn;
20787877fdebSMatt Macy 	while ((dn = multilist_sublist_head(list)) != NULL) {
20797877fdebSMatt Macy 		multilist_sublist_remove(list, dn);
20803ff01b23SMartin Matuska 		dnode_rele(dn, &os->os_synced_dnodes);
20817877fdebSMatt Macy 	}
20827877fdebSMatt Macy 	multilist_sublist_unlock(list);
20837877fdebSMatt Macy 	kmem_free(uua, sizeof (*uua));
20847877fdebSMatt Macy }
20857877fdebSMatt Macy 
20867877fdebSMatt Macy /*
20877877fdebSMatt Macy  * Return TRUE if userquota updates are needed.
20887877fdebSMatt Macy  */
20897877fdebSMatt Macy static boolean_t
20907877fdebSMatt Macy dmu_objset_do_userquota_updates_prep(objset_t *os, dmu_tx_t *tx)
20917877fdebSMatt Macy {
2092eda14cbcSMatt Macy 	if (!dmu_objset_userused_enabled(os))
20937877fdebSMatt Macy 		return (B_FALSE);
2094eda14cbcSMatt Macy 
2095eda14cbcSMatt Macy 	/*
2096eda14cbcSMatt Macy 	 * If this is a raw receive just return and handle accounting
2097eda14cbcSMatt Macy 	 * later when we have the keys loaded. We also don't do user
2098eda14cbcSMatt Macy 	 * accounting during claiming since the datasets are not owned
2099eda14cbcSMatt Macy 	 * for the duration of claiming and this txg should only be
2100eda14cbcSMatt Macy 	 * used for recovery.
2101eda14cbcSMatt Macy 	 */
2102eda14cbcSMatt Macy 	if (os->os_encrypted && dmu_objset_is_receiving(os))
21037877fdebSMatt Macy 		return (B_FALSE);
2104eda14cbcSMatt Macy 
2105eda14cbcSMatt Macy 	if (tx->tx_txg <= os->os_spa->spa_claim_max_txg)
21067877fdebSMatt Macy 		return (B_FALSE);
2107eda14cbcSMatt Macy 
2108eda14cbcSMatt Macy 	/* Allocate the user/group/project used objects if necessary. */
2109eda14cbcSMatt Macy 	if (DMU_USERUSED_DNODE(os)->dn_type == DMU_OT_NONE) {
2110eda14cbcSMatt Macy 		VERIFY0(zap_create_claim(os,
2111eda14cbcSMatt Macy 		    DMU_USERUSED_OBJECT,
2112eda14cbcSMatt Macy 		    DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
2113eda14cbcSMatt Macy 		VERIFY0(zap_create_claim(os,
2114eda14cbcSMatt Macy 		    DMU_GROUPUSED_OBJECT,
2115eda14cbcSMatt Macy 		    DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
2116eda14cbcSMatt Macy 	}
2117eda14cbcSMatt Macy 
2118eda14cbcSMatt Macy 	if (dmu_objset_projectquota_enabled(os) &&
2119eda14cbcSMatt Macy 	    DMU_PROJECTUSED_DNODE(os)->dn_type == DMU_OT_NONE) {
2120eda14cbcSMatt Macy 		VERIFY0(zap_create_claim(os, DMU_PROJECTUSED_OBJECT,
2121eda14cbcSMatt Macy 		    DMU_OT_USERGROUP_USED, DMU_OT_NONE, 0, tx));
2122eda14cbcSMatt Macy 	}
21237877fdebSMatt Macy 	return (B_TRUE);
21247877fdebSMatt Macy }
2125eda14cbcSMatt Macy 
21267877fdebSMatt Macy /*
21277877fdebSMatt Macy  * Dispatch taskq tasks to dp_sync_taskq to update the user accounting, and
21287877fdebSMatt Macy  * also release the holds on the dnodes from dmu_objset_sync_dnodes().
21297877fdebSMatt Macy  * The caller must taskq_wait(dp_sync_taskq).
21307877fdebSMatt Macy  */
21317877fdebSMatt Macy void
21327877fdebSMatt Macy dmu_objset_sync_done(objset_t *os, dmu_tx_t *tx)
21337877fdebSMatt Macy {
21347877fdebSMatt Macy 	boolean_t need_userquota = dmu_objset_do_userquota_updates_prep(os, tx);
21357877fdebSMatt Macy 
21363ff01b23SMartin Matuska 	int num_sublists = multilist_get_num_sublists(&os->os_synced_dnodes);
2137eda14cbcSMatt Macy 	for (int i = 0; i < num_sublists; i++) {
2138eda14cbcSMatt Macy 		userquota_updates_arg_t *uua =
2139eda14cbcSMatt Macy 		    kmem_alloc(sizeof (*uua), KM_SLEEP);
2140eda14cbcSMatt Macy 		uua->uua_os = os;
2141eda14cbcSMatt Macy 		uua->uua_sublist_idx = i;
2142eda14cbcSMatt Macy 		uua->uua_tx = tx;
21437877fdebSMatt Macy 
21447877fdebSMatt Macy 		/*
21457877fdebSMatt Macy 		 * If we don't need to update userquotas, use
21467877fdebSMatt Macy 		 * dnode_rele_task() to call dnode_rele()
21477877fdebSMatt Macy 		 */
2148eda14cbcSMatt Macy 		(void) taskq_dispatch(dmu_objset_pool(os)->dp_sync_taskq,
21497877fdebSMatt Macy 		    need_userquota ? userquota_updates_task : dnode_rele_task,
21507877fdebSMatt Macy 		    uua, 0);
2151eda14cbcSMatt Macy 		/* callback frees uua */
2152eda14cbcSMatt Macy 	}
2153eda14cbcSMatt Macy }
2154eda14cbcSMatt Macy 
21557877fdebSMatt Macy 
2156eda14cbcSMatt Macy /*
2157eda14cbcSMatt Macy  * Returns a pointer to data to find uid/gid from
2158eda14cbcSMatt Macy  *
2159eda14cbcSMatt Macy  * If a dirty record for transaction group that is syncing can't
2160eda14cbcSMatt Macy  * be found then NULL is returned.  In the NULL case it is assumed
2161eda14cbcSMatt Macy  * the uid/gid aren't changing.
2162eda14cbcSMatt Macy  */
2163eda14cbcSMatt Macy static void *
2164eda14cbcSMatt Macy dmu_objset_userquota_find_data(dmu_buf_impl_t *db, dmu_tx_t *tx)
2165eda14cbcSMatt Macy {
2166eda14cbcSMatt Macy 	dbuf_dirty_record_t *dr;
2167eda14cbcSMatt Macy 	void *data;
2168eda14cbcSMatt Macy 
2169eda14cbcSMatt Macy 	if (db->db_dirtycnt == 0)
2170eda14cbcSMatt Macy 		return (db->db.db_data);  /* Nothing is changing */
2171eda14cbcSMatt Macy 
2172eda14cbcSMatt Macy 	dr = dbuf_find_dirty_eq(db, tx->tx_txg);
2173eda14cbcSMatt Macy 
2174eda14cbcSMatt Macy 	if (dr == NULL) {
2175eda14cbcSMatt Macy 		data = NULL;
2176eda14cbcSMatt Macy 	} else {
21777877fdebSMatt Macy 		if (dr->dr_dnode->dn_bonuslen == 0 &&
2178eda14cbcSMatt Macy 		    dr->dr_dbuf->db_blkid == DMU_SPILL_BLKID)
2179eda14cbcSMatt Macy 			data = dr->dt.dl.dr_data->b_data;
2180eda14cbcSMatt Macy 		else
2181eda14cbcSMatt Macy 			data = dr->dt.dl.dr_data;
2182eda14cbcSMatt Macy 	}
2183eda14cbcSMatt Macy 
2184eda14cbcSMatt Macy 	return (data);
2185eda14cbcSMatt Macy }
2186eda14cbcSMatt Macy 
2187eda14cbcSMatt Macy void
2188eda14cbcSMatt Macy dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx)
2189eda14cbcSMatt Macy {
2190eda14cbcSMatt Macy 	objset_t *os = dn->dn_objset;
2191eda14cbcSMatt Macy 	void *data = NULL;
2192eda14cbcSMatt Macy 	dmu_buf_impl_t *db = NULL;
2193eda14cbcSMatt Macy 	int flags = dn->dn_id_flags;
2194eda14cbcSMatt Macy 	int error;
2195eda14cbcSMatt Macy 	boolean_t have_spill = B_FALSE;
2196eda14cbcSMatt Macy 
2197eda14cbcSMatt Macy 	if (!dmu_objset_userused_enabled(dn->dn_objset))
2198eda14cbcSMatt Macy 		return;
2199eda14cbcSMatt Macy 
2200eda14cbcSMatt Macy 	/*
2201eda14cbcSMatt Macy 	 * Raw receives introduce a problem with user accounting. Raw
2202eda14cbcSMatt Macy 	 * receives cannot update the user accounting info because the
2203eda14cbcSMatt Macy 	 * user ids and the sizes are encrypted. To guarantee that we
2204eda14cbcSMatt Macy 	 * never end up with bad user accounting, we simply disable it
2205eda14cbcSMatt Macy 	 * during raw receives. We also disable this for normal receives
2206eda14cbcSMatt Macy 	 * so that an incremental raw receive may be done on top of an
2207eda14cbcSMatt Macy 	 * existing non-raw receive.
2208eda14cbcSMatt Macy 	 */
2209eda14cbcSMatt Macy 	if (os->os_encrypted && dmu_objset_is_receiving(os))
2210eda14cbcSMatt Macy 		return;
2211eda14cbcSMatt Macy 
2212eda14cbcSMatt Macy 	if (before && (flags & (DN_ID_CHKED_BONUS|DN_ID_OLD_EXIST|
2213eda14cbcSMatt Macy 	    DN_ID_CHKED_SPILL)))
2214eda14cbcSMatt Macy 		return;
2215eda14cbcSMatt Macy 
2216eda14cbcSMatt Macy 	if (before && dn->dn_bonuslen != 0)
2217eda14cbcSMatt Macy 		data = DN_BONUS(dn->dn_phys);
2218eda14cbcSMatt Macy 	else if (!before && dn->dn_bonuslen != 0) {
2219eda14cbcSMatt Macy 		if (dn->dn_bonus) {
2220eda14cbcSMatt Macy 			db = dn->dn_bonus;
2221eda14cbcSMatt Macy 			mutex_enter(&db->db_mtx);
2222eda14cbcSMatt Macy 			data = dmu_objset_userquota_find_data(db, tx);
2223eda14cbcSMatt Macy 		} else {
2224eda14cbcSMatt Macy 			data = DN_BONUS(dn->dn_phys);
2225eda14cbcSMatt Macy 		}
2226eda14cbcSMatt Macy 	} else if (dn->dn_bonuslen == 0 && dn->dn_bonustype == DMU_OT_SA) {
2227eda14cbcSMatt Macy 			int rf = 0;
2228eda14cbcSMatt Macy 
2229eda14cbcSMatt Macy 			if (RW_WRITE_HELD(&dn->dn_struct_rwlock))
2230eda14cbcSMatt Macy 				rf |= DB_RF_HAVESTRUCT;
2231eda14cbcSMatt Macy 			error = dmu_spill_hold_by_dnode(dn,
2232eda14cbcSMatt Macy 			    rf | DB_RF_MUST_SUCCEED,
2233eda14cbcSMatt Macy 			    FTAG, (dmu_buf_t **)&db);
2234eda14cbcSMatt Macy 			ASSERT(error == 0);
2235eda14cbcSMatt Macy 			mutex_enter(&db->db_mtx);
2236eda14cbcSMatt Macy 			data = (before) ? db->db.db_data :
2237eda14cbcSMatt Macy 			    dmu_objset_userquota_find_data(db, tx);
2238eda14cbcSMatt Macy 			have_spill = B_TRUE;
2239eda14cbcSMatt Macy 	} else {
2240eda14cbcSMatt Macy 		mutex_enter(&dn->dn_mtx);
2241eda14cbcSMatt Macy 		dn->dn_id_flags |= DN_ID_CHKED_BONUS;
2242eda14cbcSMatt Macy 		mutex_exit(&dn->dn_mtx);
2243eda14cbcSMatt Macy 		return;
2244eda14cbcSMatt Macy 	}
2245eda14cbcSMatt Macy 
2246eda14cbcSMatt Macy 	/*
2247eda14cbcSMatt Macy 	 * Must always call the callback in case the object
2248eda14cbcSMatt Macy 	 * type has changed and that type isn't an object type to track
2249eda14cbcSMatt Macy 	 */
2250eda14cbcSMatt Macy 	zfs_file_info_t zfi;
2251eda14cbcSMatt Macy 	error = file_cbs[os->os_phys->os_type](dn->dn_bonustype, data, &zfi);
2252eda14cbcSMatt Macy 
2253eda14cbcSMatt Macy 	if (before) {
2254eda14cbcSMatt Macy 		ASSERT(data);
2255eda14cbcSMatt Macy 		dn->dn_olduid = zfi.zfi_user;
2256eda14cbcSMatt Macy 		dn->dn_oldgid = zfi.zfi_group;
2257eda14cbcSMatt Macy 		dn->dn_oldprojid = zfi.zfi_project;
2258eda14cbcSMatt Macy 	} else if (data) {
2259eda14cbcSMatt Macy 		dn->dn_newuid = zfi.zfi_user;
2260eda14cbcSMatt Macy 		dn->dn_newgid = zfi.zfi_group;
2261eda14cbcSMatt Macy 		dn->dn_newprojid = zfi.zfi_project;
2262eda14cbcSMatt Macy 	}
2263eda14cbcSMatt Macy 
2264eda14cbcSMatt Macy 	/*
2265eda14cbcSMatt Macy 	 * Preserve existing uid/gid when the callback can't determine
2266eda14cbcSMatt Macy 	 * what the new uid/gid are and the callback returned EEXIST.
2267eda14cbcSMatt Macy 	 * The EEXIST error tells us to just use the existing uid/gid.
2268eda14cbcSMatt Macy 	 * If we don't know what the old values are then just assign
2269eda14cbcSMatt Macy 	 * them to 0, since that is a new file  being created.
2270eda14cbcSMatt Macy 	 */
2271eda14cbcSMatt Macy 	if (!before && data == NULL && error == EEXIST) {
2272eda14cbcSMatt Macy 		if (flags & DN_ID_OLD_EXIST) {
2273eda14cbcSMatt Macy 			dn->dn_newuid = dn->dn_olduid;
2274eda14cbcSMatt Macy 			dn->dn_newgid = dn->dn_oldgid;
2275eda14cbcSMatt Macy 			dn->dn_newprojid = dn->dn_oldprojid;
2276eda14cbcSMatt Macy 		} else {
2277eda14cbcSMatt Macy 			dn->dn_newuid = 0;
2278eda14cbcSMatt Macy 			dn->dn_newgid = 0;
2279eda14cbcSMatt Macy 			dn->dn_newprojid = ZFS_DEFAULT_PROJID;
2280eda14cbcSMatt Macy 		}
2281eda14cbcSMatt Macy 		error = 0;
2282eda14cbcSMatt Macy 	}
2283eda14cbcSMatt Macy 
2284eda14cbcSMatt Macy 	if (db)
2285eda14cbcSMatt Macy 		mutex_exit(&db->db_mtx);
2286eda14cbcSMatt Macy 
2287eda14cbcSMatt Macy 	mutex_enter(&dn->dn_mtx);
2288eda14cbcSMatt Macy 	if (error == 0 && before)
2289eda14cbcSMatt Macy 		dn->dn_id_flags |= DN_ID_OLD_EXIST;
2290eda14cbcSMatt Macy 	if (error == 0 && !before)
2291eda14cbcSMatt Macy 		dn->dn_id_flags |= DN_ID_NEW_EXIST;
2292eda14cbcSMatt Macy 
2293eda14cbcSMatt Macy 	if (have_spill) {
2294eda14cbcSMatt Macy 		dn->dn_id_flags |= DN_ID_CHKED_SPILL;
2295eda14cbcSMatt Macy 	} else {
2296eda14cbcSMatt Macy 		dn->dn_id_flags |= DN_ID_CHKED_BONUS;
2297eda14cbcSMatt Macy 	}
2298eda14cbcSMatt Macy 	mutex_exit(&dn->dn_mtx);
2299eda14cbcSMatt Macy 	if (have_spill)
2300eda14cbcSMatt Macy 		dmu_buf_rele((dmu_buf_t *)db, FTAG);
2301eda14cbcSMatt Macy }
2302eda14cbcSMatt Macy 
2303eda14cbcSMatt Macy boolean_t
2304eda14cbcSMatt Macy dmu_objset_userspace_present(objset_t *os)
2305eda14cbcSMatt Macy {
2306eda14cbcSMatt Macy 	return (os->os_phys->os_flags &
2307eda14cbcSMatt Macy 	    OBJSET_FLAG_USERACCOUNTING_COMPLETE);
2308eda14cbcSMatt Macy }
2309eda14cbcSMatt Macy 
2310eda14cbcSMatt Macy boolean_t
2311eda14cbcSMatt Macy dmu_objset_userobjspace_present(objset_t *os)
2312eda14cbcSMatt Macy {
2313eda14cbcSMatt Macy 	return (os->os_phys->os_flags &
2314eda14cbcSMatt Macy 	    OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE);
2315eda14cbcSMatt Macy }
2316eda14cbcSMatt Macy 
2317eda14cbcSMatt Macy boolean_t
2318eda14cbcSMatt Macy dmu_objset_projectquota_present(objset_t *os)
2319eda14cbcSMatt Macy {
2320eda14cbcSMatt Macy 	return (os->os_phys->os_flags &
2321eda14cbcSMatt Macy 	    OBJSET_FLAG_PROJECTQUOTA_COMPLETE);
2322eda14cbcSMatt Macy }
2323eda14cbcSMatt Macy 
2324eda14cbcSMatt Macy static int
2325eda14cbcSMatt Macy dmu_objset_space_upgrade(objset_t *os)
2326eda14cbcSMatt Macy {
2327eda14cbcSMatt Macy 	uint64_t obj;
2328eda14cbcSMatt Macy 	int err = 0;
2329eda14cbcSMatt Macy 
2330eda14cbcSMatt Macy 	/*
2331eda14cbcSMatt Macy 	 * We simply need to mark every object dirty, so that it will be
2332eda14cbcSMatt Macy 	 * synced out and now accounted.  If this is called
2333eda14cbcSMatt Macy 	 * concurrently, or if we already did some work before crashing,
2334eda14cbcSMatt Macy 	 * that's fine, since we track each object's accounted state
2335eda14cbcSMatt Macy 	 * independently.
2336eda14cbcSMatt Macy 	 */
2337eda14cbcSMatt Macy 
2338eda14cbcSMatt Macy 	for (obj = 0; err == 0; err = dmu_object_next(os, &obj, FALSE, 0)) {
2339eda14cbcSMatt Macy 		dmu_tx_t *tx;
2340eda14cbcSMatt Macy 		dmu_buf_t *db;
2341eda14cbcSMatt Macy 		int objerr;
2342eda14cbcSMatt Macy 
2343eda14cbcSMatt Macy 		mutex_enter(&os->os_upgrade_lock);
2344eda14cbcSMatt Macy 		if (os->os_upgrade_exit)
2345eda14cbcSMatt Macy 			err = SET_ERROR(EINTR);
2346eda14cbcSMatt Macy 		mutex_exit(&os->os_upgrade_lock);
2347eda14cbcSMatt Macy 		if (err != 0)
2348eda14cbcSMatt Macy 			return (err);
2349eda14cbcSMatt Macy 
2350eda14cbcSMatt Macy 		if (issig(JUSTLOOKING) && issig(FORREAL))
2351eda14cbcSMatt Macy 			return (SET_ERROR(EINTR));
2352eda14cbcSMatt Macy 
2353eda14cbcSMatt Macy 		objerr = dmu_bonus_hold(os, obj, FTAG, &db);
2354eda14cbcSMatt Macy 		if (objerr != 0)
2355eda14cbcSMatt Macy 			continue;
2356eda14cbcSMatt Macy 		tx = dmu_tx_create(os);
2357eda14cbcSMatt Macy 		dmu_tx_hold_bonus(tx, obj);
2358eda14cbcSMatt Macy 		objerr = dmu_tx_assign(tx, TXG_WAIT);
2359eda14cbcSMatt Macy 		if (objerr != 0) {
2360eda14cbcSMatt Macy 			dmu_buf_rele(db, FTAG);
2361eda14cbcSMatt Macy 			dmu_tx_abort(tx);
2362eda14cbcSMatt Macy 			continue;
2363eda14cbcSMatt Macy 		}
2364eda14cbcSMatt Macy 		dmu_buf_will_dirty(db, tx);
2365eda14cbcSMatt Macy 		dmu_buf_rele(db, FTAG);
2366eda14cbcSMatt Macy 		dmu_tx_commit(tx);
2367eda14cbcSMatt Macy 	}
2368eda14cbcSMatt Macy 	return (0);
2369eda14cbcSMatt Macy }
2370eda14cbcSMatt Macy 
23717877fdebSMatt Macy static int
23727877fdebSMatt Macy dmu_objset_userspace_upgrade_cb(objset_t *os)
2373eda14cbcSMatt Macy {
2374eda14cbcSMatt Macy 	int err = 0;
2375eda14cbcSMatt Macy 
2376eda14cbcSMatt Macy 	if (dmu_objset_userspace_present(os))
2377eda14cbcSMatt Macy 		return (0);
2378eda14cbcSMatt Macy 	if (dmu_objset_is_snapshot(os))
2379eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
2380eda14cbcSMatt Macy 	if (!dmu_objset_userused_enabled(os))
2381eda14cbcSMatt Macy 		return (SET_ERROR(ENOTSUP));
2382eda14cbcSMatt Macy 
2383eda14cbcSMatt Macy 	err = dmu_objset_space_upgrade(os);
2384eda14cbcSMatt Macy 	if (err)
2385eda14cbcSMatt Macy 		return (err);
2386eda14cbcSMatt Macy 
2387eda14cbcSMatt Macy 	os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
2388eda14cbcSMatt Macy 	txg_wait_synced(dmu_objset_pool(os), 0);
2389eda14cbcSMatt Macy 	return (0);
2390eda14cbcSMatt Macy }
2391eda14cbcSMatt Macy 
23927877fdebSMatt Macy void
23937877fdebSMatt Macy dmu_objset_userspace_upgrade(objset_t *os)
23947877fdebSMatt Macy {
23957877fdebSMatt Macy 	dmu_objset_upgrade(os, dmu_objset_userspace_upgrade_cb);
23967877fdebSMatt Macy }
23977877fdebSMatt Macy 
2398eda14cbcSMatt Macy static int
2399eda14cbcSMatt Macy dmu_objset_id_quota_upgrade_cb(objset_t *os)
2400eda14cbcSMatt Macy {
2401eda14cbcSMatt Macy 	int err = 0;
2402eda14cbcSMatt Macy 
2403eda14cbcSMatt Macy 	if (dmu_objset_userobjspace_present(os) &&
2404eda14cbcSMatt Macy 	    dmu_objset_projectquota_present(os))
2405eda14cbcSMatt Macy 		return (0);
2406eda14cbcSMatt Macy 	if (dmu_objset_is_snapshot(os))
2407eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
24087877fdebSMatt Macy 	if (!dmu_objset_userused_enabled(os))
2409eda14cbcSMatt Macy 		return (SET_ERROR(ENOTSUP));
2410eda14cbcSMatt Macy 	if (!dmu_objset_projectquota_enabled(os) &&
2411eda14cbcSMatt Macy 	    dmu_objset_userobjspace_present(os))
2412eda14cbcSMatt Macy 		return (SET_ERROR(ENOTSUP));
2413eda14cbcSMatt Macy 
2414*2a58b312SMartin Matuska 	if (dmu_objset_userobjused_enabled(os))
2415*2a58b312SMartin Matuska 		dmu_objset_ds(os)->ds_feature_activation[
2416*2a58b312SMartin Matuska 		    SPA_FEATURE_USEROBJ_ACCOUNTING] = (void *)B_TRUE;
2417*2a58b312SMartin Matuska 	if (dmu_objset_projectquota_enabled(os))
2418*2a58b312SMartin Matuska 		dmu_objset_ds(os)->ds_feature_activation[
2419*2a58b312SMartin Matuska 		    SPA_FEATURE_PROJECT_QUOTA] = (void *)B_TRUE;
2420*2a58b312SMartin Matuska 
2421eda14cbcSMatt Macy 	err = dmu_objset_space_upgrade(os);
2422eda14cbcSMatt Macy 	if (err)
2423eda14cbcSMatt Macy 		return (err);
2424eda14cbcSMatt Macy 
24257877fdebSMatt Macy 	os->os_flags |= OBJSET_FLAG_USERACCOUNTING_COMPLETE;
24267877fdebSMatt Macy 	if (dmu_objset_userobjused_enabled(os))
2427eda14cbcSMatt Macy 		os->os_flags |= OBJSET_FLAG_USEROBJACCOUNTING_COMPLETE;
2428eda14cbcSMatt Macy 	if (dmu_objset_projectquota_enabled(os))
2429eda14cbcSMatt Macy 		os->os_flags |= OBJSET_FLAG_PROJECTQUOTA_COMPLETE;
2430eda14cbcSMatt Macy 
2431eda14cbcSMatt Macy 	txg_wait_synced(dmu_objset_pool(os), 0);
2432eda14cbcSMatt Macy 	return (0);
2433eda14cbcSMatt Macy }
2434eda14cbcSMatt Macy 
2435eda14cbcSMatt Macy void
2436eda14cbcSMatt Macy dmu_objset_id_quota_upgrade(objset_t *os)
2437eda14cbcSMatt Macy {
2438eda14cbcSMatt Macy 	dmu_objset_upgrade(os, dmu_objset_id_quota_upgrade_cb);
2439eda14cbcSMatt Macy }
2440eda14cbcSMatt Macy 
2441eda14cbcSMatt Macy boolean_t
2442eda14cbcSMatt Macy dmu_objset_userobjspace_upgradable(objset_t *os)
2443eda14cbcSMatt Macy {
2444eda14cbcSMatt Macy 	return (dmu_objset_type(os) == DMU_OST_ZFS &&
2445eda14cbcSMatt Macy 	    !dmu_objset_is_snapshot(os) &&
2446eda14cbcSMatt Macy 	    dmu_objset_userobjused_enabled(os) &&
2447eda14cbcSMatt Macy 	    !dmu_objset_userobjspace_present(os) &&
2448eda14cbcSMatt Macy 	    spa_writeable(dmu_objset_spa(os)));
2449eda14cbcSMatt Macy }
2450eda14cbcSMatt Macy 
2451eda14cbcSMatt Macy boolean_t
2452eda14cbcSMatt Macy dmu_objset_projectquota_upgradable(objset_t *os)
2453eda14cbcSMatt Macy {
2454eda14cbcSMatt Macy 	return (dmu_objset_type(os) == DMU_OST_ZFS &&
2455eda14cbcSMatt Macy 	    !dmu_objset_is_snapshot(os) &&
2456eda14cbcSMatt Macy 	    dmu_objset_projectquota_enabled(os) &&
2457eda14cbcSMatt Macy 	    !dmu_objset_projectquota_present(os) &&
2458eda14cbcSMatt Macy 	    spa_writeable(dmu_objset_spa(os)));
2459eda14cbcSMatt Macy }
2460eda14cbcSMatt Macy 
2461eda14cbcSMatt Macy void
2462eda14cbcSMatt Macy dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
2463eda14cbcSMatt Macy     uint64_t *usedobjsp, uint64_t *availobjsp)
2464eda14cbcSMatt Macy {
2465eda14cbcSMatt Macy 	dsl_dataset_space(os->os_dsl_dataset, refdbytesp, availbytesp,
2466eda14cbcSMatt Macy 	    usedobjsp, availobjsp);
2467eda14cbcSMatt Macy }
2468eda14cbcSMatt Macy 
2469eda14cbcSMatt Macy uint64_t
2470eda14cbcSMatt Macy dmu_objset_fsid_guid(objset_t *os)
2471eda14cbcSMatt Macy {
2472eda14cbcSMatt Macy 	return (dsl_dataset_fsid_guid(os->os_dsl_dataset));
2473eda14cbcSMatt Macy }
2474eda14cbcSMatt Macy 
2475eda14cbcSMatt Macy void
2476eda14cbcSMatt Macy dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat)
2477eda14cbcSMatt Macy {
2478eda14cbcSMatt Macy 	stat->dds_type = os->os_phys->os_type;
2479eda14cbcSMatt Macy 	if (os->os_dsl_dataset)
2480eda14cbcSMatt Macy 		dsl_dataset_fast_stat(os->os_dsl_dataset, stat);
2481eda14cbcSMatt Macy }
2482eda14cbcSMatt Macy 
2483eda14cbcSMatt Macy void
2484eda14cbcSMatt Macy dmu_objset_stats(objset_t *os, nvlist_t *nv)
2485eda14cbcSMatt Macy {
2486eda14cbcSMatt Macy 	ASSERT(os->os_dsl_dataset ||
2487eda14cbcSMatt Macy 	    os->os_phys->os_type == DMU_OST_META);
2488eda14cbcSMatt Macy 
2489eda14cbcSMatt Macy 	if (os->os_dsl_dataset != NULL)
2490eda14cbcSMatt Macy 		dsl_dataset_stats(os->os_dsl_dataset, nv);
2491eda14cbcSMatt Macy 
2492eda14cbcSMatt Macy 	dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_TYPE,
2493eda14cbcSMatt Macy 	    os->os_phys->os_type);
2494eda14cbcSMatt Macy 	dsl_prop_nvlist_add_uint64(nv, ZFS_PROP_USERACCOUNTING,
2495eda14cbcSMatt Macy 	    dmu_objset_userspace_present(os));
2496eda14cbcSMatt Macy }
2497eda14cbcSMatt Macy 
2498eda14cbcSMatt Macy int
2499eda14cbcSMatt Macy dmu_objset_is_snapshot(objset_t *os)
2500eda14cbcSMatt Macy {
2501eda14cbcSMatt Macy 	if (os->os_dsl_dataset != NULL)
2502eda14cbcSMatt Macy 		return (os->os_dsl_dataset->ds_is_snapshot);
2503eda14cbcSMatt Macy 	else
2504eda14cbcSMatt Macy 		return (B_FALSE);
2505eda14cbcSMatt Macy }
2506eda14cbcSMatt Macy 
2507eda14cbcSMatt Macy int
2508180f8225SMatt Macy dmu_snapshot_realname(objset_t *os, const char *name, char *real, int maxlen,
2509eda14cbcSMatt Macy     boolean_t *conflict)
2510eda14cbcSMatt Macy {
2511eda14cbcSMatt Macy 	dsl_dataset_t *ds = os->os_dsl_dataset;
2512eda14cbcSMatt Macy 	uint64_t ignored;
2513eda14cbcSMatt Macy 
2514eda14cbcSMatt Macy 	if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0)
2515eda14cbcSMatt Macy 		return (SET_ERROR(ENOENT));
2516eda14cbcSMatt Macy 
2517eda14cbcSMatt Macy 	return (zap_lookup_norm(ds->ds_dir->dd_pool->dp_meta_objset,
2518eda14cbcSMatt Macy 	    dsl_dataset_phys(ds)->ds_snapnames_zapobj, name, 8, 1, &ignored,
2519eda14cbcSMatt Macy 	    MT_NORMALIZE, real, maxlen, conflict));
2520eda14cbcSMatt Macy }
2521eda14cbcSMatt Macy 
2522eda14cbcSMatt Macy int
2523eda14cbcSMatt Macy dmu_snapshot_list_next(objset_t *os, int namelen, char *name,
2524eda14cbcSMatt Macy     uint64_t *idp, uint64_t *offp, boolean_t *case_conflict)
2525eda14cbcSMatt Macy {
2526eda14cbcSMatt Macy 	dsl_dataset_t *ds = os->os_dsl_dataset;
2527eda14cbcSMatt Macy 	zap_cursor_t cursor;
2528eda14cbcSMatt Macy 	zap_attribute_t attr;
2529eda14cbcSMatt Macy 
2530eda14cbcSMatt Macy 	ASSERT(dsl_pool_config_held(dmu_objset_pool(os)));
2531eda14cbcSMatt Macy 
2532eda14cbcSMatt Macy 	if (dsl_dataset_phys(ds)->ds_snapnames_zapobj == 0)
2533eda14cbcSMatt Macy 		return (SET_ERROR(ENOENT));
2534eda14cbcSMatt Macy 
2535eda14cbcSMatt Macy 	zap_cursor_init_serialized(&cursor,
2536eda14cbcSMatt Macy 	    ds->ds_dir->dd_pool->dp_meta_objset,
2537eda14cbcSMatt Macy 	    dsl_dataset_phys(ds)->ds_snapnames_zapobj, *offp);
2538eda14cbcSMatt Macy 
2539eda14cbcSMatt Macy 	if (zap_cursor_retrieve(&cursor, &attr) != 0) {
2540eda14cbcSMatt Macy 		zap_cursor_fini(&cursor);
2541eda14cbcSMatt Macy 		return (SET_ERROR(ENOENT));
2542eda14cbcSMatt Macy 	}
2543eda14cbcSMatt Macy 
2544eda14cbcSMatt Macy 	if (strlen(attr.za_name) + 1 > namelen) {
2545eda14cbcSMatt Macy 		zap_cursor_fini(&cursor);
2546eda14cbcSMatt Macy 		return (SET_ERROR(ENAMETOOLONG));
2547eda14cbcSMatt Macy 	}
2548eda14cbcSMatt Macy 
2549eda14cbcSMatt Macy 	(void) strlcpy(name, attr.za_name, namelen);
2550eda14cbcSMatt Macy 	if (idp)
2551eda14cbcSMatt Macy 		*idp = attr.za_first_integer;
2552eda14cbcSMatt Macy 	if (case_conflict)
2553eda14cbcSMatt Macy 		*case_conflict = attr.za_normalization_conflict;
2554eda14cbcSMatt Macy 	zap_cursor_advance(&cursor);
2555eda14cbcSMatt Macy 	*offp = zap_cursor_serialize(&cursor);
2556eda14cbcSMatt Macy 	zap_cursor_fini(&cursor);
2557eda14cbcSMatt Macy 
2558eda14cbcSMatt Macy 	return (0);
2559eda14cbcSMatt Macy }
2560eda14cbcSMatt Macy 
2561eda14cbcSMatt Macy int
2562eda14cbcSMatt Macy dmu_snapshot_lookup(objset_t *os, const char *name, uint64_t *value)
2563eda14cbcSMatt Macy {
2564eda14cbcSMatt Macy 	return (dsl_dataset_snap_lookup(os->os_dsl_dataset, name, value));
2565eda14cbcSMatt Macy }
2566eda14cbcSMatt Macy 
2567eda14cbcSMatt Macy int
2568eda14cbcSMatt Macy dmu_dir_list_next(objset_t *os, int namelen, char *name,
2569eda14cbcSMatt Macy     uint64_t *idp, uint64_t *offp)
2570eda14cbcSMatt Macy {
2571eda14cbcSMatt Macy 	dsl_dir_t *dd = os->os_dsl_dataset->ds_dir;
2572eda14cbcSMatt Macy 	zap_cursor_t cursor;
2573eda14cbcSMatt Macy 	zap_attribute_t attr;
2574eda14cbcSMatt Macy 
2575eda14cbcSMatt Macy 	/* there is no next dir on a snapshot! */
2576eda14cbcSMatt Macy 	if (os->os_dsl_dataset->ds_object !=
2577eda14cbcSMatt Macy 	    dsl_dir_phys(dd)->dd_head_dataset_obj)
2578eda14cbcSMatt Macy 		return (SET_ERROR(ENOENT));
2579eda14cbcSMatt Macy 
2580eda14cbcSMatt Macy 	zap_cursor_init_serialized(&cursor,
2581eda14cbcSMatt Macy 	    dd->dd_pool->dp_meta_objset,
2582eda14cbcSMatt Macy 	    dsl_dir_phys(dd)->dd_child_dir_zapobj, *offp);
2583eda14cbcSMatt Macy 
2584eda14cbcSMatt Macy 	if (zap_cursor_retrieve(&cursor, &attr) != 0) {
2585eda14cbcSMatt Macy 		zap_cursor_fini(&cursor);
2586eda14cbcSMatt Macy 		return (SET_ERROR(ENOENT));
2587eda14cbcSMatt Macy 	}
2588eda14cbcSMatt Macy 
2589eda14cbcSMatt Macy 	if (strlen(attr.za_name) + 1 > namelen) {
2590eda14cbcSMatt Macy 		zap_cursor_fini(&cursor);
2591eda14cbcSMatt Macy 		return (SET_ERROR(ENAMETOOLONG));
2592eda14cbcSMatt Macy 	}
2593eda14cbcSMatt Macy 
2594eda14cbcSMatt Macy 	(void) strlcpy(name, attr.za_name, namelen);
2595eda14cbcSMatt Macy 	if (idp)
2596eda14cbcSMatt Macy 		*idp = attr.za_first_integer;
2597eda14cbcSMatt Macy 	zap_cursor_advance(&cursor);
2598eda14cbcSMatt Macy 	*offp = zap_cursor_serialize(&cursor);
2599eda14cbcSMatt Macy 	zap_cursor_fini(&cursor);
2600eda14cbcSMatt Macy 
2601eda14cbcSMatt Macy 	return (0);
2602eda14cbcSMatt Macy }
2603eda14cbcSMatt Macy 
2604eda14cbcSMatt Macy typedef struct dmu_objset_find_ctx {
2605eda14cbcSMatt Macy 	taskq_t		*dc_tq;
2606eda14cbcSMatt Macy 	dsl_pool_t	*dc_dp;
2607eda14cbcSMatt Macy 	uint64_t	dc_ddobj;
2608eda14cbcSMatt Macy 	char		*dc_ddname; /* last component of ddobj's name */
2609eda14cbcSMatt Macy 	int		(*dc_func)(dsl_pool_t *, dsl_dataset_t *, void *);
2610eda14cbcSMatt Macy 	void		*dc_arg;
2611eda14cbcSMatt Macy 	int		dc_flags;
2612eda14cbcSMatt Macy 	kmutex_t	*dc_error_lock;
2613eda14cbcSMatt Macy 	int		*dc_error;
2614eda14cbcSMatt Macy } dmu_objset_find_ctx_t;
2615eda14cbcSMatt Macy 
2616eda14cbcSMatt Macy static void
2617eda14cbcSMatt Macy dmu_objset_find_dp_impl(dmu_objset_find_ctx_t *dcp)
2618eda14cbcSMatt Macy {
2619eda14cbcSMatt Macy 	dsl_pool_t *dp = dcp->dc_dp;
2620eda14cbcSMatt Macy 	dsl_dir_t *dd;
2621eda14cbcSMatt Macy 	dsl_dataset_t *ds;
2622eda14cbcSMatt Macy 	zap_cursor_t zc;
2623eda14cbcSMatt Macy 	zap_attribute_t *attr;
2624eda14cbcSMatt Macy 	uint64_t thisobj;
2625eda14cbcSMatt Macy 	int err = 0;
2626eda14cbcSMatt Macy 
2627eda14cbcSMatt Macy 	/* don't process if there already was an error */
2628eda14cbcSMatt Macy 	if (*dcp->dc_error != 0)
2629eda14cbcSMatt Macy 		goto out;
2630eda14cbcSMatt Macy 
2631eda14cbcSMatt Macy 	/*
2632eda14cbcSMatt Macy 	 * Note: passing the name (dc_ddname) here is optional, but it
2633eda14cbcSMatt Macy 	 * improves performance because we don't need to call
2634eda14cbcSMatt Macy 	 * zap_value_search() to determine the name.
2635eda14cbcSMatt Macy 	 */
2636eda14cbcSMatt Macy 	err = dsl_dir_hold_obj(dp, dcp->dc_ddobj, dcp->dc_ddname, FTAG, &dd);
2637eda14cbcSMatt Macy 	if (err != 0)
2638eda14cbcSMatt Macy 		goto out;
2639eda14cbcSMatt Macy 
2640eda14cbcSMatt Macy 	/* Don't visit hidden ($MOS & $ORIGIN) objsets. */
2641eda14cbcSMatt Macy 	if (dd->dd_myname[0] == '$') {
2642eda14cbcSMatt Macy 		dsl_dir_rele(dd, FTAG);
2643eda14cbcSMatt Macy 		goto out;
2644eda14cbcSMatt Macy 	}
2645eda14cbcSMatt Macy 
2646eda14cbcSMatt Macy 	thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj;
2647eda14cbcSMatt Macy 	attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
2648eda14cbcSMatt Macy 
2649eda14cbcSMatt Macy 	/*
2650eda14cbcSMatt Macy 	 * Iterate over all children.
2651eda14cbcSMatt Macy 	 */
2652eda14cbcSMatt Macy 	if (dcp->dc_flags & DS_FIND_CHILDREN) {
2653eda14cbcSMatt Macy 		for (zap_cursor_init(&zc, dp->dp_meta_objset,
2654eda14cbcSMatt Macy 		    dsl_dir_phys(dd)->dd_child_dir_zapobj);
2655eda14cbcSMatt Macy 		    zap_cursor_retrieve(&zc, attr) == 0;
2656eda14cbcSMatt Macy 		    (void) zap_cursor_advance(&zc)) {
2657eda14cbcSMatt Macy 			ASSERT3U(attr->za_integer_length, ==,
2658eda14cbcSMatt Macy 			    sizeof (uint64_t));
2659eda14cbcSMatt Macy 			ASSERT3U(attr->za_num_integers, ==, 1);
2660eda14cbcSMatt Macy 
2661eda14cbcSMatt Macy 			dmu_objset_find_ctx_t *child_dcp =
2662eda14cbcSMatt Macy 			    kmem_alloc(sizeof (*child_dcp), KM_SLEEP);
2663eda14cbcSMatt Macy 			*child_dcp = *dcp;
2664eda14cbcSMatt Macy 			child_dcp->dc_ddobj = attr->za_first_integer;
2665eda14cbcSMatt Macy 			child_dcp->dc_ddname = spa_strdup(attr->za_name);
2666eda14cbcSMatt Macy 			if (dcp->dc_tq != NULL)
2667eda14cbcSMatt Macy 				(void) taskq_dispatch(dcp->dc_tq,
2668eda14cbcSMatt Macy 				    dmu_objset_find_dp_cb, child_dcp, TQ_SLEEP);
2669eda14cbcSMatt Macy 			else
2670eda14cbcSMatt Macy 				dmu_objset_find_dp_impl(child_dcp);
2671eda14cbcSMatt Macy 		}
2672eda14cbcSMatt Macy 		zap_cursor_fini(&zc);
2673eda14cbcSMatt Macy 	}
2674eda14cbcSMatt Macy 
2675eda14cbcSMatt Macy 	/*
2676eda14cbcSMatt Macy 	 * Iterate over all snapshots.
2677eda14cbcSMatt Macy 	 */
2678eda14cbcSMatt Macy 	if (dcp->dc_flags & DS_FIND_SNAPSHOTS) {
2679eda14cbcSMatt Macy 		dsl_dataset_t *ds;
2680eda14cbcSMatt Macy 		err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
2681eda14cbcSMatt Macy 
2682eda14cbcSMatt Macy 		if (err == 0) {
2683eda14cbcSMatt Macy 			uint64_t snapobj;
2684eda14cbcSMatt Macy 
2685eda14cbcSMatt Macy 			snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;
2686eda14cbcSMatt Macy 			dsl_dataset_rele(ds, FTAG);
2687eda14cbcSMatt Macy 
2688eda14cbcSMatt Macy 			for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj);
2689eda14cbcSMatt Macy 			    zap_cursor_retrieve(&zc, attr) == 0;
2690eda14cbcSMatt Macy 			    (void) zap_cursor_advance(&zc)) {
2691eda14cbcSMatt Macy 				ASSERT3U(attr->za_integer_length, ==,
2692eda14cbcSMatt Macy 				    sizeof (uint64_t));
2693eda14cbcSMatt Macy 				ASSERT3U(attr->za_num_integers, ==, 1);
2694eda14cbcSMatt Macy 
2695eda14cbcSMatt Macy 				err = dsl_dataset_hold_obj(dp,
2696eda14cbcSMatt Macy 				    attr->za_first_integer, FTAG, &ds);
2697eda14cbcSMatt Macy 				if (err != 0)
2698eda14cbcSMatt Macy 					break;
2699eda14cbcSMatt Macy 				err = dcp->dc_func(dp, ds, dcp->dc_arg);
2700eda14cbcSMatt Macy 				dsl_dataset_rele(ds, FTAG);
2701eda14cbcSMatt Macy 				if (err != 0)
2702eda14cbcSMatt Macy 					break;
2703eda14cbcSMatt Macy 			}
2704eda14cbcSMatt Macy 			zap_cursor_fini(&zc);
2705eda14cbcSMatt Macy 		}
2706eda14cbcSMatt Macy 	}
2707eda14cbcSMatt Macy 
2708eda14cbcSMatt Macy 	kmem_free(attr, sizeof (zap_attribute_t));
2709eda14cbcSMatt Macy 
2710eda14cbcSMatt Macy 	if (err != 0) {
2711eda14cbcSMatt Macy 		dsl_dir_rele(dd, FTAG);
2712eda14cbcSMatt Macy 		goto out;
2713eda14cbcSMatt Macy 	}
2714eda14cbcSMatt Macy 
2715eda14cbcSMatt Macy 	/*
2716eda14cbcSMatt Macy 	 * Apply to self.
2717eda14cbcSMatt Macy 	 */
2718eda14cbcSMatt Macy 	err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
2719eda14cbcSMatt Macy 
2720eda14cbcSMatt Macy 	/*
2721eda14cbcSMatt Macy 	 * Note: we hold the dir while calling dsl_dataset_hold_obj() so
2722eda14cbcSMatt Macy 	 * that the dir will remain cached, and we won't have to re-instantiate
2723eda14cbcSMatt Macy 	 * it (which could be expensive due to finding its name via
2724eda14cbcSMatt Macy 	 * zap_value_search()).
2725eda14cbcSMatt Macy 	 */
2726eda14cbcSMatt Macy 	dsl_dir_rele(dd, FTAG);
2727eda14cbcSMatt Macy 	if (err != 0)
2728eda14cbcSMatt Macy 		goto out;
2729eda14cbcSMatt Macy 	err = dcp->dc_func(dp, ds, dcp->dc_arg);
2730eda14cbcSMatt Macy 	dsl_dataset_rele(ds, FTAG);
2731eda14cbcSMatt Macy 
2732eda14cbcSMatt Macy out:
2733eda14cbcSMatt Macy 	if (err != 0) {
2734eda14cbcSMatt Macy 		mutex_enter(dcp->dc_error_lock);
2735eda14cbcSMatt Macy 		/* only keep first error */
2736eda14cbcSMatt Macy 		if (*dcp->dc_error == 0)
2737eda14cbcSMatt Macy 			*dcp->dc_error = err;
2738eda14cbcSMatt Macy 		mutex_exit(dcp->dc_error_lock);
2739eda14cbcSMatt Macy 	}
2740eda14cbcSMatt Macy 
2741eda14cbcSMatt Macy 	if (dcp->dc_ddname != NULL)
2742eda14cbcSMatt Macy 		spa_strfree(dcp->dc_ddname);
2743eda14cbcSMatt Macy 	kmem_free(dcp, sizeof (*dcp));
2744eda14cbcSMatt Macy }
2745eda14cbcSMatt Macy 
2746eda14cbcSMatt Macy static void
2747eda14cbcSMatt Macy dmu_objset_find_dp_cb(void *arg)
2748eda14cbcSMatt Macy {
2749eda14cbcSMatt Macy 	dmu_objset_find_ctx_t *dcp = arg;
2750eda14cbcSMatt Macy 	dsl_pool_t *dp = dcp->dc_dp;
2751eda14cbcSMatt Macy 
2752eda14cbcSMatt Macy 	/*
2753eda14cbcSMatt Macy 	 * We need to get a pool_config_lock here, as there are several
2754eda14cbcSMatt Macy 	 * assert(pool_config_held) down the stack. Getting a lock via
2755eda14cbcSMatt Macy 	 * dsl_pool_config_enter is risky, as it might be stalled by a
2756eda14cbcSMatt Macy 	 * pending writer. This would deadlock, as the write lock can
2757eda14cbcSMatt Macy 	 * only be granted when our parent thread gives up the lock.
2758eda14cbcSMatt Macy 	 * The _prio interface gives us priority over a pending writer.
2759eda14cbcSMatt Macy 	 */
2760eda14cbcSMatt Macy 	dsl_pool_config_enter_prio(dp, FTAG);
2761eda14cbcSMatt Macy 
2762eda14cbcSMatt Macy 	dmu_objset_find_dp_impl(dcp);
2763eda14cbcSMatt Macy 
2764eda14cbcSMatt Macy 	dsl_pool_config_exit(dp, FTAG);
2765eda14cbcSMatt Macy }
2766eda14cbcSMatt Macy 
2767eda14cbcSMatt Macy /*
2768eda14cbcSMatt Macy  * Find objsets under and including ddobj, call func(ds) on each.
2769eda14cbcSMatt Macy  * The order for the enumeration is completely undefined.
2770eda14cbcSMatt Macy  * func is called with dsl_pool_config held.
2771eda14cbcSMatt Macy  */
2772eda14cbcSMatt Macy int
2773eda14cbcSMatt Macy dmu_objset_find_dp(dsl_pool_t *dp, uint64_t ddobj,
2774eda14cbcSMatt Macy     int func(dsl_pool_t *, dsl_dataset_t *, void *), void *arg, int flags)
2775eda14cbcSMatt Macy {
2776eda14cbcSMatt Macy 	int error = 0;
2777eda14cbcSMatt Macy 	taskq_t *tq = NULL;
2778eda14cbcSMatt Macy 	int ntasks;
2779eda14cbcSMatt Macy 	dmu_objset_find_ctx_t *dcp;
2780eda14cbcSMatt Macy 	kmutex_t err_lock;
2781eda14cbcSMatt Macy 
2782eda14cbcSMatt Macy 	mutex_init(&err_lock, NULL, MUTEX_DEFAULT, NULL);
2783eda14cbcSMatt Macy 	dcp = kmem_alloc(sizeof (*dcp), KM_SLEEP);
2784eda14cbcSMatt Macy 	dcp->dc_tq = NULL;
2785eda14cbcSMatt Macy 	dcp->dc_dp = dp;
2786eda14cbcSMatt Macy 	dcp->dc_ddobj = ddobj;
2787eda14cbcSMatt Macy 	dcp->dc_ddname = NULL;
2788eda14cbcSMatt Macy 	dcp->dc_func = func;
2789eda14cbcSMatt Macy 	dcp->dc_arg = arg;
2790eda14cbcSMatt Macy 	dcp->dc_flags = flags;
2791eda14cbcSMatt Macy 	dcp->dc_error_lock = &err_lock;
2792eda14cbcSMatt Macy 	dcp->dc_error = &error;
2793eda14cbcSMatt Macy 
2794eda14cbcSMatt Macy 	if ((flags & DS_FIND_SERIALIZE) || dsl_pool_config_held_writer(dp)) {
2795eda14cbcSMatt Macy 		/*
2796eda14cbcSMatt Macy 		 * In case a write lock is held we can't make use of
2797eda14cbcSMatt Macy 		 * parallelism, as down the stack of the worker threads
2798eda14cbcSMatt Macy 		 * the lock is asserted via dsl_pool_config_held.
2799eda14cbcSMatt Macy 		 * In case of a read lock this is solved by getting a read
2800eda14cbcSMatt Macy 		 * lock in each worker thread, which isn't possible in case
2801eda14cbcSMatt Macy 		 * of a writer lock. So we fall back to the synchronous path
2802eda14cbcSMatt Macy 		 * here.
2803eda14cbcSMatt Macy 		 * In the future it might be possible to get some magic into
2804eda14cbcSMatt Macy 		 * dsl_pool_config_held in a way that it returns true for
2805eda14cbcSMatt Macy 		 * the worker threads so that a single lock held from this
2806eda14cbcSMatt Macy 		 * thread suffices. For now, stay single threaded.
2807eda14cbcSMatt Macy 		 */
2808eda14cbcSMatt Macy 		dmu_objset_find_dp_impl(dcp);
2809eda14cbcSMatt Macy 		mutex_destroy(&err_lock);
2810eda14cbcSMatt Macy 
2811eda14cbcSMatt Macy 		return (error);
2812eda14cbcSMatt Macy 	}
2813eda14cbcSMatt Macy 
2814eda14cbcSMatt Macy 	ntasks = dmu_find_threads;
2815eda14cbcSMatt Macy 	if (ntasks == 0)
2816eda14cbcSMatt Macy 		ntasks = vdev_count_leaves(dp->dp_spa) * 4;
2817eda14cbcSMatt Macy 	tq = taskq_create("dmu_objset_find", ntasks, maxclsyspri, ntasks,
2818eda14cbcSMatt Macy 	    INT_MAX, 0);
2819eda14cbcSMatt Macy 	if (tq == NULL) {
2820eda14cbcSMatt Macy 		kmem_free(dcp, sizeof (*dcp));
2821eda14cbcSMatt Macy 		mutex_destroy(&err_lock);
2822eda14cbcSMatt Macy 
2823eda14cbcSMatt Macy 		return (SET_ERROR(ENOMEM));
2824eda14cbcSMatt Macy 	}
2825eda14cbcSMatt Macy 	dcp->dc_tq = tq;
2826eda14cbcSMatt Macy 
2827eda14cbcSMatt Macy 	/* dcp will be freed by task */
2828eda14cbcSMatt Macy 	(void) taskq_dispatch(tq, dmu_objset_find_dp_cb, dcp, TQ_SLEEP);
2829eda14cbcSMatt Macy 
2830eda14cbcSMatt Macy 	/*
2831eda14cbcSMatt Macy 	 * PORTING: this code relies on the property of taskq_wait to wait
2832eda14cbcSMatt Macy 	 * until no more tasks are queued and no more tasks are active. As
2833eda14cbcSMatt Macy 	 * we always queue new tasks from within other tasks, task_wait
2834eda14cbcSMatt Macy 	 * reliably waits for the full recursion to finish, even though we
2835eda14cbcSMatt Macy 	 * enqueue new tasks after taskq_wait has been called.
2836eda14cbcSMatt Macy 	 * On platforms other than illumos, taskq_wait may not have this
2837eda14cbcSMatt Macy 	 * property.
2838eda14cbcSMatt Macy 	 */
2839eda14cbcSMatt Macy 	taskq_wait(tq);
2840eda14cbcSMatt Macy 	taskq_destroy(tq);
2841eda14cbcSMatt Macy 	mutex_destroy(&err_lock);
2842eda14cbcSMatt Macy 
2843eda14cbcSMatt Macy 	return (error);
2844eda14cbcSMatt Macy }
2845eda14cbcSMatt Macy 
2846eda14cbcSMatt Macy /*
2847eda14cbcSMatt Macy  * Find all objsets under name, and for each, call 'func(child_name, arg)'.
2848eda14cbcSMatt Macy  * The dp_config_rwlock must not be held when this is called, and it
2849eda14cbcSMatt Macy  * will not be held when the callback is called.
2850eda14cbcSMatt Macy  * Therefore this function should only be used when the pool is not changing
2851eda14cbcSMatt Macy  * (e.g. in syncing context), or the callback can deal with the possible races.
2852eda14cbcSMatt Macy  */
2853eda14cbcSMatt Macy static int
2854eda14cbcSMatt Macy dmu_objset_find_impl(spa_t *spa, const char *name,
2855eda14cbcSMatt Macy     int func(const char *, void *), void *arg, int flags)
2856eda14cbcSMatt Macy {
2857eda14cbcSMatt Macy 	dsl_dir_t *dd;
2858eda14cbcSMatt Macy 	dsl_pool_t *dp = spa_get_dsl(spa);
2859eda14cbcSMatt Macy 	dsl_dataset_t *ds;
2860eda14cbcSMatt Macy 	zap_cursor_t zc;
2861eda14cbcSMatt Macy 	zap_attribute_t *attr;
2862eda14cbcSMatt Macy 	char *child;
2863eda14cbcSMatt Macy 	uint64_t thisobj;
2864eda14cbcSMatt Macy 	int err;
2865eda14cbcSMatt Macy 
2866eda14cbcSMatt Macy 	dsl_pool_config_enter(dp, FTAG);
2867eda14cbcSMatt Macy 
2868eda14cbcSMatt Macy 	err = dsl_dir_hold(dp, name, FTAG, &dd, NULL);
2869eda14cbcSMatt Macy 	if (err != 0) {
2870eda14cbcSMatt Macy 		dsl_pool_config_exit(dp, FTAG);
2871eda14cbcSMatt Macy 		return (err);
2872eda14cbcSMatt Macy 	}
2873eda14cbcSMatt Macy 
2874eda14cbcSMatt Macy 	/* Don't visit hidden ($MOS & $ORIGIN) objsets. */
2875eda14cbcSMatt Macy 	if (dd->dd_myname[0] == '$') {
2876eda14cbcSMatt Macy 		dsl_dir_rele(dd, FTAG);
2877eda14cbcSMatt Macy 		dsl_pool_config_exit(dp, FTAG);
2878eda14cbcSMatt Macy 		return (0);
2879eda14cbcSMatt Macy 	}
2880eda14cbcSMatt Macy 
2881eda14cbcSMatt Macy 	thisobj = dsl_dir_phys(dd)->dd_head_dataset_obj;
2882eda14cbcSMatt Macy 	attr = kmem_alloc(sizeof (zap_attribute_t), KM_SLEEP);
2883eda14cbcSMatt Macy 
2884eda14cbcSMatt Macy 	/*
2885eda14cbcSMatt Macy 	 * Iterate over all children.
2886eda14cbcSMatt Macy 	 */
2887eda14cbcSMatt Macy 	if (flags & DS_FIND_CHILDREN) {
2888eda14cbcSMatt Macy 		for (zap_cursor_init(&zc, dp->dp_meta_objset,
2889eda14cbcSMatt Macy 		    dsl_dir_phys(dd)->dd_child_dir_zapobj);
2890eda14cbcSMatt Macy 		    zap_cursor_retrieve(&zc, attr) == 0;
2891eda14cbcSMatt Macy 		    (void) zap_cursor_advance(&zc)) {
2892eda14cbcSMatt Macy 			ASSERT3U(attr->za_integer_length, ==,
2893eda14cbcSMatt Macy 			    sizeof (uint64_t));
2894eda14cbcSMatt Macy 			ASSERT3U(attr->za_num_integers, ==, 1);
2895eda14cbcSMatt Macy 
2896eda14cbcSMatt Macy 			child = kmem_asprintf("%s/%s", name, attr->za_name);
2897eda14cbcSMatt Macy 			dsl_pool_config_exit(dp, FTAG);
2898eda14cbcSMatt Macy 			err = dmu_objset_find_impl(spa, child,
2899eda14cbcSMatt Macy 			    func, arg, flags);
2900eda14cbcSMatt Macy 			dsl_pool_config_enter(dp, FTAG);
2901eda14cbcSMatt Macy 			kmem_strfree(child);
2902eda14cbcSMatt Macy 			if (err != 0)
2903eda14cbcSMatt Macy 				break;
2904eda14cbcSMatt Macy 		}
2905eda14cbcSMatt Macy 		zap_cursor_fini(&zc);
2906eda14cbcSMatt Macy 
2907eda14cbcSMatt Macy 		if (err != 0) {
2908eda14cbcSMatt Macy 			dsl_dir_rele(dd, FTAG);
2909eda14cbcSMatt Macy 			dsl_pool_config_exit(dp, FTAG);
2910eda14cbcSMatt Macy 			kmem_free(attr, sizeof (zap_attribute_t));
2911eda14cbcSMatt Macy 			return (err);
2912eda14cbcSMatt Macy 		}
2913eda14cbcSMatt Macy 	}
2914eda14cbcSMatt Macy 
2915eda14cbcSMatt Macy 	/*
2916eda14cbcSMatt Macy 	 * Iterate over all snapshots.
2917eda14cbcSMatt Macy 	 */
2918eda14cbcSMatt Macy 	if (flags & DS_FIND_SNAPSHOTS) {
2919eda14cbcSMatt Macy 		err = dsl_dataset_hold_obj(dp, thisobj, FTAG, &ds);
2920eda14cbcSMatt Macy 
2921eda14cbcSMatt Macy 		if (err == 0) {
2922eda14cbcSMatt Macy 			uint64_t snapobj;
2923eda14cbcSMatt Macy 
2924eda14cbcSMatt Macy 			snapobj = dsl_dataset_phys(ds)->ds_snapnames_zapobj;
2925eda14cbcSMatt Macy 			dsl_dataset_rele(ds, FTAG);
2926eda14cbcSMatt Macy 
2927eda14cbcSMatt Macy 			for (zap_cursor_init(&zc, dp->dp_meta_objset, snapobj);
2928eda14cbcSMatt Macy 			    zap_cursor_retrieve(&zc, attr) == 0;
2929eda14cbcSMatt Macy 			    (void) zap_cursor_advance(&zc)) {
2930eda14cbcSMatt Macy 				ASSERT3U(attr->za_integer_length, ==,
2931eda14cbcSMatt Macy 				    sizeof (uint64_t));
2932eda14cbcSMatt Macy 				ASSERT3U(attr->za_num_integers, ==, 1);
2933eda14cbcSMatt Macy 
2934eda14cbcSMatt Macy 				child = kmem_asprintf("%s@%s",
2935eda14cbcSMatt Macy 				    name, attr->za_name);
2936eda14cbcSMatt Macy 				dsl_pool_config_exit(dp, FTAG);
2937eda14cbcSMatt Macy 				err = func(child, arg);
2938eda14cbcSMatt Macy 				dsl_pool_config_enter(dp, FTAG);
2939eda14cbcSMatt Macy 				kmem_strfree(child);
2940eda14cbcSMatt Macy 				if (err != 0)
2941eda14cbcSMatt Macy 					break;
2942eda14cbcSMatt Macy 			}
2943eda14cbcSMatt Macy 			zap_cursor_fini(&zc);
2944eda14cbcSMatt Macy 		}
2945eda14cbcSMatt Macy 	}
2946eda14cbcSMatt Macy 
2947eda14cbcSMatt Macy 	dsl_dir_rele(dd, FTAG);
2948eda14cbcSMatt Macy 	kmem_free(attr, sizeof (zap_attribute_t));
2949eda14cbcSMatt Macy 	dsl_pool_config_exit(dp, FTAG);
2950eda14cbcSMatt Macy 
2951eda14cbcSMatt Macy 	if (err != 0)
2952eda14cbcSMatt Macy 		return (err);
2953eda14cbcSMatt Macy 
2954eda14cbcSMatt Macy 	/* Apply to self. */
2955eda14cbcSMatt Macy 	return (func(name, arg));
2956eda14cbcSMatt Macy }
2957eda14cbcSMatt Macy 
2958eda14cbcSMatt Macy /*
2959eda14cbcSMatt Macy  * See comment above dmu_objset_find_impl().
2960eda14cbcSMatt Macy  */
2961eda14cbcSMatt Macy int
2962eda14cbcSMatt Macy dmu_objset_find(const char *name, int func(const char *, void *), void *arg,
2963eda14cbcSMatt Macy     int flags)
2964eda14cbcSMatt Macy {
2965eda14cbcSMatt Macy 	spa_t *spa;
2966eda14cbcSMatt Macy 	int error;
2967eda14cbcSMatt Macy 
2968eda14cbcSMatt Macy 	error = spa_open(name, &spa, FTAG);
2969eda14cbcSMatt Macy 	if (error != 0)
2970eda14cbcSMatt Macy 		return (error);
2971eda14cbcSMatt Macy 	error = dmu_objset_find_impl(spa, name, func, arg, flags);
2972eda14cbcSMatt Macy 	spa_close(spa, FTAG);
2973eda14cbcSMatt Macy 	return (error);
2974eda14cbcSMatt Macy }
2975eda14cbcSMatt Macy 
2976eda14cbcSMatt Macy boolean_t
2977eda14cbcSMatt Macy dmu_objset_incompatible_encryption_version(objset_t *os)
2978eda14cbcSMatt Macy {
2979eda14cbcSMatt Macy 	return (dsl_dir_incompatible_encryption_version(
2980eda14cbcSMatt Macy 	    os->os_dsl_dataset->ds_dir));
2981eda14cbcSMatt Macy }
2982eda14cbcSMatt Macy 
2983eda14cbcSMatt Macy void
2984eda14cbcSMatt Macy dmu_objset_set_user(objset_t *os, void *user_ptr)
2985eda14cbcSMatt Macy {
2986eda14cbcSMatt Macy 	ASSERT(MUTEX_HELD(&os->os_user_ptr_lock));
2987eda14cbcSMatt Macy 	os->os_user_ptr = user_ptr;
2988eda14cbcSMatt Macy }
2989eda14cbcSMatt Macy 
2990eda14cbcSMatt Macy void *
2991eda14cbcSMatt Macy dmu_objset_get_user(objset_t *os)
2992eda14cbcSMatt Macy {
2993eda14cbcSMatt Macy 	ASSERT(MUTEX_HELD(&os->os_user_ptr_lock));
2994eda14cbcSMatt Macy 	return (os->os_user_ptr);
2995eda14cbcSMatt Macy }
2996eda14cbcSMatt Macy 
2997eda14cbcSMatt Macy /*
2998eda14cbcSMatt Macy  * Determine name of filesystem, given name of snapshot.
2999eda14cbcSMatt Macy  * buf must be at least ZFS_MAX_DATASET_NAME_LEN bytes
3000eda14cbcSMatt Macy  */
3001eda14cbcSMatt Macy int
3002eda14cbcSMatt Macy dmu_fsname(const char *snapname, char *buf)
3003eda14cbcSMatt Macy {
3004eda14cbcSMatt Macy 	char *atp = strchr(snapname, '@');
3005eda14cbcSMatt Macy 	if (atp == NULL)
3006eda14cbcSMatt Macy 		return (SET_ERROR(EINVAL));
3007eda14cbcSMatt Macy 	if (atp - snapname >= ZFS_MAX_DATASET_NAME_LEN)
3008eda14cbcSMatt Macy 		return (SET_ERROR(ENAMETOOLONG));
3009eda14cbcSMatt Macy 	(void) strlcpy(buf, snapname, atp - snapname + 1);
3010eda14cbcSMatt Macy 	return (0);
3011eda14cbcSMatt Macy }
3012eda14cbcSMatt Macy 
3013eda14cbcSMatt Macy /*
3014eda14cbcSMatt Macy  * Call when we think we're going to write/free space in open context
3015eda14cbcSMatt Macy  * to track the amount of dirty data in the open txg, which is also the
3016eda14cbcSMatt Macy  * amount of memory that can not be evicted until this txg syncs.
3017eda14cbcSMatt Macy  *
3018eda14cbcSMatt Macy  * Note that there are two conditions where this can be called from
3019eda14cbcSMatt Macy  * syncing context:
3020eda14cbcSMatt Macy  *
3021eda14cbcSMatt Macy  * [1] When we just created the dataset, in which case we go on with
3022eda14cbcSMatt Macy  *     updating any accounting of dirty data as usual.
3023eda14cbcSMatt Macy  * [2] When we are dirtying MOS data, in which case we only update the
3024eda14cbcSMatt Macy  *     pool's accounting of dirty data.
3025eda14cbcSMatt Macy  */
3026eda14cbcSMatt Macy void
3027eda14cbcSMatt Macy dmu_objset_willuse_space(objset_t *os, int64_t space, dmu_tx_t *tx)
3028eda14cbcSMatt Macy {
3029eda14cbcSMatt Macy 	dsl_dataset_t *ds = os->os_dsl_dataset;
3030eda14cbcSMatt Macy 	int64_t aspace = spa_get_worst_case_asize(os->os_spa, space);
3031eda14cbcSMatt Macy 
3032eda14cbcSMatt Macy 	if (ds != NULL) {
3033eda14cbcSMatt Macy 		dsl_dir_willuse_space(ds->ds_dir, aspace, tx);
3034eda14cbcSMatt Macy 	}
3035eda14cbcSMatt Macy 
3036eda14cbcSMatt Macy 	dsl_pool_dirty_space(dmu_tx_pool(tx), space, tx);
3037eda14cbcSMatt Macy }
3038eda14cbcSMatt Macy 
3039eda14cbcSMatt Macy #if defined(_KERNEL)
3040eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_zil);
3041eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_pool);
3042eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_ds);
3043eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_type);
3044eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_name);
3045eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_hold);
3046eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_hold_flags);
3047eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_own);
3048eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_rele);
3049eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_rele_flags);
3050eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_disown);
3051eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_from_ds);
3052eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_create);
3053eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_clone);
3054eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_stats);
3055eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_fast_stat);
3056eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_spa);
3057eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_space);
3058eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_fsid_guid);
3059eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_find);
3060eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_byteswap);
3061eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_evict_dbufs);
3062eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_snap_cmtime);
3063eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_dnodesize);
3064eda14cbcSMatt Macy 
3065eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_sync);
3066eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_is_dirty);
3067eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_create_impl_dnstats);
3068eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_create_impl);
3069eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_open_impl);
3070eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_evict);
3071eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_register_type);
30727877fdebSMatt Macy EXPORT_SYMBOL(dmu_objset_sync_done);
3073eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userquota_get_ids);
3074eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userused_enabled);
3075eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userspace_upgrade);
3076eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userspace_present);
3077eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userobjused_enabled);
3078eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userobjspace_upgradable);
3079eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_userobjspace_present);
3080eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_projectquota_enabled);
3081eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_projectquota_present);
3082eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_projectquota_upgradable);
3083eda14cbcSMatt Macy EXPORT_SYMBOL(dmu_objset_id_quota_upgrade);
3084eda14cbcSMatt Macy #endif
3085