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.
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.
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]
22 * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
26 * Copyright (c) 2012, 2016 by Delphix. All rights reserved.
34 #include <sys/refcount.h>
49 * No synchronization is needed because a tx can only be handled
52 list_t tx_holds; /* list of dmu_tx_hold_t */
54 struct dsl_dir *tx_dir;
55 struct dsl_pool *tx_pool;
57 uint64_t tx_lastsnap_txg;
58 uint64_t tx_lasttried_txg;
60 void *tx_tempreserve_cookie;
61 struct dmu_tx_hold *tx_needassign_txh;
63 /* list of dmu_tx_callback_t on this dmu_tx */
66 /* placeholder for syncing context, doesn't need specific holds */
69 /* transaction is marked as being a "net free" of space */
72 /* time this transaction was created */
75 /* need to wait for sufficient dirty space */
76 boolean_t tx_wait_dirty;
78 /* has this transaction already been delayed? */
79 boolean_t tx_dirty_delayed;
84 enum dmu_tx_hold_type {
95 typedef struct dmu_tx_hold {
98 struct dnode *txh_dnode;
99 refcount_t txh_space_towrite;
100 refcount_t txh_memory_tohold;
101 enum dmu_tx_hold_type txh_type;
106 typedef struct dmu_tx_callback {
107 list_node_t dcb_node; /* linked to tx_callbacks list */
108 dmu_tx_callback_func_t *dcb_func; /* caller function pointer */
109 void *dcb_data; /* caller private data */
113 * These routines are defined in dmu.h, and are called by the user.
115 dmu_tx_t *dmu_tx_create(objset_t *dd);
116 int dmu_tx_assign(dmu_tx_t *tx, uint64_t txg_how);
117 void dmu_tx_commit(dmu_tx_t *tx);
118 void dmu_tx_abort(dmu_tx_t *tx);
119 uint64_t dmu_tx_get_txg(dmu_tx_t *tx);
120 struct dsl_pool *dmu_tx_pool(dmu_tx_t *tx);
121 void dmu_tx_wait(dmu_tx_t *tx);
123 void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func,
125 void dmu_tx_do_callbacks(list_t *cb_list, int error);
128 * These routines are defined in dmu_spa.h, and are called by the SPA.
130 extern dmu_tx_t *dmu_tx_create_assigned(struct dsl_pool *dp, uint64_t txg);
133 * These routines are only called by the DMU.
135 dmu_tx_t *dmu_tx_create_dd(dsl_dir_t *dd);
136 int dmu_tx_is_syncing(dmu_tx_t *tx);
137 int dmu_tx_private_ok(dmu_tx_t *tx);
138 void dmu_tx_add_new_object(dmu_tx_t *tx, dnode_t *dn);
139 void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db);
140 void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space);
143 #define DMU_TX_DIRTY_BUF(tx, db) dmu_tx_dirty_buf(tx, db)
145 #define DMU_TX_DIRTY_BUF(tx, db)
152 #endif /* _SYS_DMU_TX_H */