3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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 (c) 2011 by Delphix. All rights reserved.
24 */
25
26 /* Portions Copyright 2010 Robert Milkowski */
27
28 #include <sys/zfs_context.h>
29 #include <sys/spa.h>
30 #include <sys/dmu.h>
31 #include <sys/zap.h>
32 #include <sys/arc.h>
33 #include <sys/stat.h>
34 #include <sys/resource.h>
35 #include <sys/zil.h>
36 #include <sys/zil_impl.h>
37 #include <sys/dsl_dataset.h>
38 #include <sys/vdev_impl.h>
39 #include <sys/dmu_tx.h>
40 #include <sys/dsl_pool.h>
41
42 /*
43 * The zfs intent log (ZIL) saves transaction records of system calls
1045 return (lwb);
1046 }
1047 if (error) {
1048 ASSERT(error == ENOENT || error == EEXIST ||
1049 error == EALREADY);
1050 return (lwb);
1051 }
1052 }
1053 }
1054
1055 /*
1056 * We're actually making an entry, so update lrc_seq to be the
1057 * log record sequence number. Note that this is generally not
1058 * equal to the itx sequence number because not all transactions
1059 * are synchronous, and sometimes spa_sync() gets there first.
1060 */
1061 lrc->lrc_seq = ++zilog->zl_lr_seq; /* we are single threaded */
1062 lwb->lwb_nused += reclen + dlen;
1063 lwb->lwb_max_txg = MAX(lwb->lwb_max_txg, txg);
1064 ASSERT3U(lwb->lwb_nused, <=, lwb->lwb_sz);
1065 ASSERT3U(P2PHASE(lwb->lwb_nused, sizeof (uint64_t)), ==, 0);
1066
1067 return (lwb);
1068 }
1069
1070 itx_t *
1071 zil_itx_create(uint64_t txtype, size_t lrsize)
1072 {
1073 itx_t *itx;
1074
1075 lrsize = P2ROUNDUP_TYPED(lrsize, sizeof (uint64_t), size_t);
1076
1077 itx = kmem_alloc(offsetof(itx_t, itx_lr) + lrsize, KM_SLEEP);
1078 itx->itx_lr.lrc_txtype = txtype;
1079 itx->itx_lr.lrc_reclen = lrsize;
1080 itx->itx_sod = lrsize; /* if write & WR_NEED_COPY will be increased */
1081 itx->itx_lr.lrc_seq = 0; /* defensive */
1082 itx->itx_sync = B_TRUE; /* default is synchronous */
1083
1084 return (itx);
1085 }
|
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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 (c) 2012 by Delphix. All rights reserved.
24 */
25
26 /* Portions Copyright 2010 Robert Milkowski */
27
28 #include <sys/zfs_context.h>
29 #include <sys/spa.h>
30 #include <sys/dmu.h>
31 #include <sys/zap.h>
32 #include <sys/arc.h>
33 #include <sys/stat.h>
34 #include <sys/resource.h>
35 #include <sys/zil.h>
36 #include <sys/zil_impl.h>
37 #include <sys/dsl_dataset.h>
38 #include <sys/vdev_impl.h>
39 #include <sys/dmu_tx.h>
40 #include <sys/dsl_pool.h>
41
42 /*
43 * The zfs intent log (ZIL) saves transaction records of system calls
1045 return (lwb);
1046 }
1047 if (error) {
1048 ASSERT(error == ENOENT || error == EEXIST ||
1049 error == EALREADY);
1050 return (lwb);
1051 }
1052 }
1053 }
1054
1055 /*
1056 * We're actually making an entry, so update lrc_seq to be the
1057 * log record sequence number. Note that this is generally not
1058 * equal to the itx sequence number because not all transactions
1059 * are synchronous, and sometimes spa_sync() gets there first.
1060 */
1061 lrc->lrc_seq = ++zilog->zl_lr_seq; /* we are single threaded */
1062 lwb->lwb_nused += reclen + dlen;
1063 lwb->lwb_max_txg = MAX(lwb->lwb_max_txg, txg);
1064 ASSERT3U(lwb->lwb_nused, <=, lwb->lwb_sz);
1065 ASSERT0(P2PHASE(lwb->lwb_nused, sizeof (uint64_t)));
1066
1067 return (lwb);
1068 }
1069
1070 itx_t *
1071 zil_itx_create(uint64_t txtype, size_t lrsize)
1072 {
1073 itx_t *itx;
1074
1075 lrsize = P2ROUNDUP_TYPED(lrsize, sizeof (uint64_t), size_t);
1076
1077 itx = kmem_alloc(offsetof(itx_t, itx_lr) + lrsize, KM_SLEEP);
1078 itx->itx_lr.lrc_txtype = txtype;
1079 itx->itx_lr.lrc_reclen = lrsize;
1080 itx->itx_sod = lrsize; /* if write & WR_NEED_COPY will be increased */
1081 itx->itx_lr.lrc_seq = 0; /* defensive */
1082 itx->itx_sync = B_TRUE; /* default is synchronous */
1083
1084 return (itx);
1085 }
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