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, 2015 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 /* has this transaction already been delayed? */
72 /* time this transaction was created */
75 /* need to wait for sufficient dirty space */
76 boolean_t tx_wait_dirty;
80 uint64_t tx_space_towrite;
81 uint64_t tx_space_tofree;
82 uint64_t tx_space_tooverwrite;
83 uint64_t tx_space_tounref;
84 refcount_t tx_space_written;
85 refcount_t tx_space_freed;
89 enum dmu_tx_hold_type {
100 typedef struct dmu_tx_hold {
102 list_node_t txh_node;
103 struct dnode *txh_dnode;
104 refcount_t txh_space_towrite;
105 refcount_t txh_space_tofree;
106 refcount_t txh_space_tooverwrite;
107 refcount_t txh_space_tounref;
108 refcount_t txh_memory_tohold;
109 refcount_t txh_fudge;
111 enum dmu_tx_hold_type txh_type;
117 typedef struct dmu_tx_callback {
118 list_node_t dcb_node; /* linked to tx_callbacks list */
119 dmu_tx_callback_func_t *dcb_func; /* caller function pointer */
120 void *dcb_data; /* caller private data */
124 * These routines are defined in dmu.h, and are called by the user.
126 dmu_tx_t *dmu_tx_create(objset_t *dd);
127 int dmu_tx_assign(dmu_tx_t *tx, txg_how_t txg_how);
128 void dmu_tx_commit(dmu_tx_t *tx);
129 void dmu_tx_abort(dmu_tx_t *tx);
130 uint64_t dmu_tx_get_txg(dmu_tx_t *tx);
131 struct dsl_pool *dmu_tx_pool(dmu_tx_t *tx);
132 void dmu_tx_wait(dmu_tx_t *tx);
134 void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func,
136 void dmu_tx_do_callbacks(list_t *cb_list, int error);
139 * These routines are defined in dmu_spa.h, and are called by the SPA.
141 extern dmu_tx_t *dmu_tx_create_assigned(struct dsl_pool *dp, uint64_t txg);
144 * These routines are only called by the DMU.
146 dmu_tx_t *dmu_tx_create_dd(dsl_dir_t *dd);
147 int dmu_tx_is_syncing(dmu_tx_t *tx);
148 int dmu_tx_private_ok(dmu_tx_t *tx);
149 void dmu_tx_add_new_object(dmu_tx_t *tx, objset_t *os, uint64_t object);
150 void dmu_tx_willuse_space(dmu_tx_t *tx, int64_t delta);
151 void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db);
152 int dmu_tx_holds(dmu_tx_t *tx, uint64_t object);
153 void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space);
156 #define DMU_TX_DIRTY_BUF(tx, db) dmu_tx_dirty_buf(tx, db)
158 #define DMU_TX_DIRTY_BUF(tx, db)
165 #endif /* _SYS_DMU_TX_H */