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 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25 /*
26 * Copyright (c) 2012 by Delphix. All rights reserved.
27 */
28
29 #ifndef _SYS_DMU_TX_H
30 #define _SYS_DMU_TX_H
31
32 #include <sys/inttypes.h>
33 #include <sys/dmu.h>
34 #include <sys/txg.h>
35 #include <sys/refcount.h>
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 struct dmu_buf_impl;
42 struct dmu_tx_hold;
43 struct dnode_link;
44 struct dsl_pool;
45 struct dnode;
46 struct dsl_dir;
47
48 struct dmu_tx {
49 /*
50 * No synchronization is needed because a tx can only be handled
51 * by one thread.
52 */
53 list_t tx_holds; /* list of dmu_tx_hold_t */
54 objset_t *tx_objset;
55 struct dsl_dir *tx_dir;
56 struct dsl_pool *tx_pool;
57 uint64_t tx_txg;
58 uint64_t tx_lastsnap_txg;
59 uint64_t tx_lasttried_txg;
60 txg_handle_t tx_txgh;
61 void *tx_tempreserve_cookie;
62 struct dmu_tx_hold *tx_needassign_txh;
63 list_t tx_callbacks; /* list of dmu_tx_callback_t on this dmu_tx */
64 uint8_t tx_anyobj;
65 int tx_err;
66 #ifdef ZFS_DEBUG
67 uint64_t tx_space_towrite;
68 uint64_t tx_space_tofree;
69 uint64_t tx_space_tooverwrite;
70 uint64_t tx_space_tounref;
71 refcount_t tx_space_written;
72 refcount_t tx_space_freed;
73 #endif
74 };
75
76 enum dmu_tx_hold_type {
77 THT_NEWOBJECT,
78 THT_WRITE,
79 THT_BONUS,
80 THT_FREE,
81 THT_ZAP,
82 THT_SPACE,
83 THT_SPILL,
84 THT_NUMTYPES
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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 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25 /*
26 * Copyright (c) 2013 by Delphix. All rights reserved.
27 */
28
29 #ifndef _SYS_DMU_TX_H
30 #define _SYS_DMU_TX_H
31
32 #include <sys/inttypes.h>
33 #include <sys/dmu.h>
34 #include <sys/txg.h>
35 #include <sys/refcount.h>
36
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40
41 struct dmu_buf_impl;
42 struct dmu_tx_hold;
43 struct dnode_link;
44 struct dsl_pool;
45 struct dnode;
46 struct dsl_dir;
47
48 struct dmu_tx {
49 /*
50 * No synchronization is needed because a tx can only be handled
51 * by one thread.
52 */
53 list_t tx_holds; /* list of dmu_tx_hold_t */
54 objset_t *tx_objset;
55 struct dsl_dir *tx_dir;
56 struct dsl_pool *tx_pool;
57 uint64_t tx_txg;
58 uint64_t tx_lastsnap_txg;
59 uint64_t tx_lasttried_txg;
60 txg_handle_t tx_txgh;
61 void *tx_tempreserve_cookie;
62 struct dmu_tx_hold *tx_needassign_txh;
63
64 /* list of dmu_tx_callback_t on this dmu_tx */
65 list_t tx_callbacks;
66
67 /* placeholder for syncing context, doesn't need specific holds */
68 boolean_t tx_anyobj;
69
70 /* has this transaction already been delayed? */
71 boolean_t tx_waited;
72
73 /* time this transaction was created */
74 hrtime_t tx_start;
75
76 /* need to wait for sufficient dirty space */
77 boolean_t tx_wait_dirty;
78
79 int tx_err;
80 #ifdef ZFS_DEBUG
81 uint64_t tx_space_towrite;
82 uint64_t tx_space_tofree;
83 uint64_t tx_space_tooverwrite;
84 uint64_t tx_space_tounref;
85 refcount_t tx_space_written;
86 refcount_t tx_space_freed;
87 #endif
88 };
89
90 enum dmu_tx_hold_type {
91 THT_NEWOBJECT,
92 THT_WRITE,
93 THT_BONUS,
94 THT_FREE,
95 THT_ZAP,
96 THT_SPACE,
97 THT_SPILL,
98 THT_NUMTYPES
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