4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
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 2011 Nexenta Systems, Inc. All rights reserved.
24 */
25
26 #include <sys/zfs_context.h>
27 #include <sys/dmu.h>
28 #include <sys/dmu_impl.h>
29 #include <sys/dbuf.h>
30 #include <sys/dmu_objset.h>
31 #include <sys/dsl_dataset.h>
32 #include <sys/dsl_dir.h>
33 #include <sys/dmu_tx.h>
34 #include <sys/spa.h>
35 #include <sys/zio.h>
36 #include <sys/dmu_zfetch.h>
37 #include <sys/sa.h>
38 #include <sys/sa_impl.h>
39
40 static void dbuf_destroy(dmu_buf_impl_t *db);
41 static int dbuf_undirty(dmu_buf_impl_t *db, dmu_tx_t *tx);
42 static void dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx);
43
210 if (db->db_level != 0 || db->db_evict_func == NULL)
211 return;
212
213 if (db->db_user_data_ptr_ptr)
214 *db->db_user_data_ptr_ptr = db->db.db_data;
215 db->db_evict_func(&db->db, db->db_user_ptr);
216 db->db_user_ptr = NULL;
217 db->db_user_data_ptr_ptr = NULL;
218 db->db_evict_func = NULL;
219 }
220
221 boolean_t
222 dbuf_is_metadata(dmu_buf_impl_t *db)
223 {
224 if (db->db_level > 0) {
225 return (B_TRUE);
226 } else {
227 boolean_t is_metadata;
228
229 DB_DNODE_ENTER(db);
230 is_metadata = dmu_ot[DB_DNODE(db)->dn_type].ot_metadata;
231 DB_DNODE_EXIT(db);
232
233 return (is_metadata);
234 }
235 }
236
237 void
238 dbuf_evict(dmu_buf_impl_t *db)
239 {
240 ASSERT(MUTEX_HELD(&db->db_mtx));
241 ASSERT(db->db_buf == NULL);
242 ASSERT(db->db_data_pending == NULL);
243
244 dbuf_clear(db);
245 dbuf_destroy(db);
246 }
247
248 void
249 dbuf_init(void)
250 {
|
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
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 2011 Nexenta Systems, Inc. All rights reserved.
24 * Copyright (c) 2012 by Delphix. All rights reserved.
25 */
26
27 #include <sys/zfs_context.h>
28 #include <sys/dmu.h>
29 #include <sys/dmu_impl.h>
30 #include <sys/dbuf.h>
31 #include <sys/dmu_objset.h>
32 #include <sys/dsl_dataset.h>
33 #include <sys/dsl_dir.h>
34 #include <sys/dmu_tx.h>
35 #include <sys/spa.h>
36 #include <sys/zio.h>
37 #include <sys/dmu_zfetch.h>
38 #include <sys/sa.h>
39 #include <sys/sa_impl.h>
40
41 static void dbuf_destroy(dmu_buf_impl_t *db);
42 static int dbuf_undirty(dmu_buf_impl_t *db, dmu_tx_t *tx);
43 static void dbuf_write(dbuf_dirty_record_t *dr, arc_buf_t *data, dmu_tx_t *tx);
44
211 if (db->db_level != 0 || db->db_evict_func == NULL)
212 return;
213
214 if (db->db_user_data_ptr_ptr)
215 *db->db_user_data_ptr_ptr = db->db.db_data;
216 db->db_evict_func(&db->db, db->db_user_ptr);
217 db->db_user_ptr = NULL;
218 db->db_user_data_ptr_ptr = NULL;
219 db->db_evict_func = NULL;
220 }
221
222 boolean_t
223 dbuf_is_metadata(dmu_buf_impl_t *db)
224 {
225 if (db->db_level > 0) {
226 return (B_TRUE);
227 } else {
228 boolean_t is_metadata;
229
230 DB_DNODE_ENTER(db);
231 is_metadata = DMU_OT_IS_METADATA(DB_DNODE(db)->dn_type);
232 DB_DNODE_EXIT(db);
233
234 return (is_metadata);
235 }
236 }
237
238 void
239 dbuf_evict(dmu_buf_impl_t *db)
240 {
241 ASSERT(MUTEX_HELD(&db->db_mtx));
242 ASSERT(db->db_buf == NULL);
243 ASSERT(db->db_data_pending == NULL);
244
245 dbuf_clear(db);
246 dbuf_destroy(db);
247 }
248
249 void
250 dbuf_init(void)
251 {
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