10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
24 */
25
26 #include <sys/dmu.h>
27 #include <sys/dmu_objset.h>
28 #include <sys/dmu_tx.h>
29 #include <sys/dnode.h>
30
31 uint64_t
32 dmu_object_alloc(objset_t *os, dmu_object_type_t ot, int blocksize,
33 dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx)
34 {
35 uint64_t object;
36 uint64_t L2_dnode_count = DNODES_PER_BLOCK <<
37 (DMU_META_DNODE(os)->dn_indblkshift - SPA_BLKPTRSHIFT);
38 dnode_t *dn = NULL;
39 int restarted = B_FALSE;
40
41 mutex_enter(&os->os_obj_lock);
42 for (;;) {
43 object = os->os_obj_next;
44 /*
45 * Each time we polish off an L2 bp worth of dnodes
46 * (2^13 objects), move to another L2 bp that's still
47 * reasonably sparse (at most 1/4 full). Look from the
48 * beginning once, but after that keep looking from here.
49 * If we can't find one, just keep going from here.
177 ASSERT(dn->dn_type != DMU_OT_NONE);
178 dnode_free_range(dn, 0, DMU_OBJECT_END, tx);
179 dnode_free(dn, tx);
180 dnode_rele(dn, FTAG);
181
182 return (0);
183 }
184
185 int
186 dmu_object_next(objset_t *os, uint64_t *objectp, boolean_t hole, uint64_t txg)
187 {
188 uint64_t offset = (*objectp + 1) << DNODE_SHIFT;
189 int error;
190
191 error = dnode_next_offset(DMU_META_DNODE(os),
192 (hole ? DNODE_FIND_HOLE : 0), &offset, 0, DNODES_PER_BLOCK, txg);
193
194 *objectp = offset >> DNODE_SHIFT;
195
196 return (error);
197 }
|
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21 /*
22 * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright (c) 2013 by Delphix. All rights reserved.
24 */
25
26 #include <sys/dmu.h>
27 #include <sys/dmu_objset.h>
28 #include <sys/dmu_tx.h>
29 #include <sys/dnode.h>
30 #include <sys/zap.h>
31 #include <sys/zfeature.h>
32
33 uint64_t
34 dmu_object_alloc(objset_t *os, dmu_object_type_t ot, int blocksize,
35 dmu_object_type_t bonustype, int bonuslen, dmu_tx_t *tx)
36 {
37 uint64_t object;
38 uint64_t L2_dnode_count = DNODES_PER_BLOCK <<
39 (DMU_META_DNODE(os)->dn_indblkshift - SPA_BLKPTRSHIFT);
40 dnode_t *dn = NULL;
41 int restarted = B_FALSE;
42
43 mutex_enter(&os->os_obj_lock);
44 for (;;) {
45 object = os->os_obj_next;
46 /*
47 * Each time we polish off an L2 bp worth of dnodes
48 * (2^13 objects), move to another L2 bp that's still
49 * reasonably sparse (at most 1/4 full). Look from the
50 * beginning once, but after that keep looking from here.
51 * If we can't find one, just keep going from here.
179 ASSERT(dn->dn_type != DMU_OT_NONE);
180 dnode_free_range(dn, 0, DMU_OBJECT_END, tx);
181 dnode_free(dn, tx);
182 dnode_rele(dn, FTAG);
183
184 return (0);
185 }
186
187 int
188 dmu_object_next(objset_t *os, uint64_t *objectp, boolean_t hole, uint64_t txg)
189 {
190 uint64_t offset = (*objectp + 1) << DNODE_SHIFT;
191 int error;
192
193 error = dnode_next_offset(DMU_META_DNODE(os),
194 (hole ? DNODE_FIND_HOLE : 0), &offset, 0, DNODES_PER_BLOCK, txg);
195
196 *objectp = offset >> DNODE_SHIFT;
197
198 return (error);
199 }
200
201 /*
202 * Turn this object from old_type into DMU_OTN_ZAP_METADATA, and bump the
203 * refcount on SPA_FEATURE_EXTENSIBLE_DATASET.
204 *
205 * Only for use from syncing context, on MOS objects.
206 */
207 void
208 dmu_object_zapify(objset_t *mos, uint64_t object, dmu_object_type_t old_type,
209 dmu_tx_t *tx)
210 {
211 dnode_t *dn;
212
213 ASSERT(dmu_tx_is_syncing(tx));
214
215 VERIFY0(dnode_hold(mos, object, FTAG, &dn));
216 if (dn->dn_type == DMU_OTN_ZAP_METADATA) {
217 dnode_rele(dn, FTAG);
218 return;
219 }
220 ASSERT3U(dn->dn_type, ==, old_type);
221 ASSERT0(dn->dn_maxblkid);
222 dn->dn_next_type[tx->tx_txg & TXG_MASK] = dn->dn_type =
223 DMU_OTN_ZAP_METADATA;
224 dnode_setdirty(dn, tx);
225 dnode_rele(dn, FTAG);
226
227 mzap_create_impl(mos, object, 0, 0, tx);
228
229 spa_feature_incr(dmu_objset_spa(mos),
230 SPA_FEATURE_EXTENSIBLE_DATASET, tx);
231 }
232
233 void
234 dmu_object_free_zapified(objset_t *mos, uint64_t object, dmu_tx_t *tx)
235 {
236 dnode_t *dn;
237 dmu_object_type_t t;
238
239 ASSERT(dmu_tx_is_syncing(tx));
240
241 VERIFY0(dnode_hold(mos, object, FTAG, &dn));
242 t = dn->dn_type;
243 dnode_rele(dn, FTAG);
244
245 if (t == DMU_OTN_ZAP_METADATA) {
246 spa_feature_decr(dmu_objset_spa(mos),
247 SPA_FEATURE_EXTENSIBLE_DATASET, tx);
248 }
249 VERIFY0(dmu_object_free(mos, object, tx));
250 }
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