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.
32 #include <sys/inttypes.h>
35 #include <sys/refcount.h>
50 * No synchronization is needed because a tx can only be handled
53 list_t tx_holds; /* list of dmu_tx_hold_t */
55 struct dsl_dir *tx_dir;
56 struct dsl_pool *tx_pool;
58 uint64_t tx_lastsnap_txg;
59 uint64_t tx_lasttried_txg;
61 void *tx_tempreserve_cookie;
62 struct dmu_tx_hold *tx_needassign_txh;
64 /* list of dmu_tx_callback_t on this dmu_tx */
67 /* placeholder for syncing context, doesn't need specific holds */
70 /* has this transaction already been delayed? */
73 /* transaction is marked as being a "net free" of space */
76 /* time this transaction was created */
79 /* need to wait for sufficient dirty space */
80 boolean_t tx_wait_dirty;
85 enum dmu_tx_hold_type {
96 typedef struct dmu_tx_hold {
99 struct dnode *txh_dnode;
100 refcount_t txh_space_towrite;
101 refcount_t txh_memory_tohold;
102 enum dmu_tx_hold_type txh_type;
107 typedef struct dmu_tx_callback {
108 list_node_t dcb_node; /* linked to tx_callbacks list */
109 dmu_tx_callback_func_t *dcb_func; /* caller function pointer */
110 void *dcb_data; /* caller private data */
114 * Used for dmu tx kstat.
116 typedef struct dmu_tx_stats {
117 kstat_named_t dmu_tx_assigned;
118 kstat_named_t dmu_tx_delay;
119 kstat_named_t dmu_tx_error;
120 kstat_named_t dmu_tx_suspended;
121 kstat_named_t dmu_tx_group;
122 kstat_named_t dmu_tx_memory_reserve;
123 kstat_named_t dmu_tx_memory_reclaim;
124 kstat_named_t dmu_tx_dirty_throttle;
125 kstat_named_t dmu_tx_dirty_delay;
126 kstat_named_t dmu_tx_dirty_over_max;
127 kstat_named_t dmu_tx_quota;
130 extern dmu_tx_stats_t dmu_tx_stats;
132 #define DMU_TX_STAT_INCR(stat, val) \
133 atomic_add_64(&dmu_tx_stats.stat.value.ui64, (val));
134 #define DMU_TX_STAT_BUMP(stat) \
135 DMU_TX_STAT_INCR(stat, 1);
138 * These routines are defined in dmu.h, and are called by the user.
140 dmu_tx_t *dmu_tx_create(objset_t *dd);
141 int dmu_tx_assign(dmu_tx_t *tx, txg_how_t txg_how);
142 void dmu_tx_commit(dmu_tx_t *tx);
143 void dmu_tx_abort(dmu_tx_t *tx);
144 uint64_t dmu_tx_get_txg(dmu_tx_t *tx);
145 struct dsl_pool *dmu_tx_pool(dmu_tx_t *tx);
146 void dmu_tx_wait(dmu_tx_t *tx);
148 void dmu_tx_callback_register(dmu_tx_t *tx, dmu_tx_callback_func_t *dcb_func,
150 void dmu_tx_do_callbacks(list_t *cb_list, int error);
153 * These routines are defined in dmu_spa.h, and are called by the SPA.
155 extern dmu_tx_t *dmu_tx_create_assigned(struct dsl_pool *dp, uint64_t txg);
158 * These routines are only called by the DMU.
160 dmu_tx_t *dmu_tx_create_dd(dsl_dir_t *dd);
161 int dmu_tx_is_syncing(dmu_tx_t *tx);
162 int dmu_tx_private_ok(dmu_tx_t *tx);
163 void dmu_tx_add_new_object(dmu_tx_t *tx, dnode_t *dn);
164 void dmu_tx_dirty_buf(dmu_tx_t *tx, struct dmu_buf_impl *db);
165 void dmu_tx_hold_space(dmu_tx_t *tx, uint64_t space);
168 #define DMU_TX_DIRTY_BUF(tx, db) dmu_tx_dirty_buf(tx, db)
170 #define DMU_TX_DIRTY_BUF(tx, db)
173 void dmu_tx_init(void);
174 void dmu_tx_fini(void);
180 #endif /* _SYS_DMU_TX_H */