1 /*
2  * CDDL HEADER START
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) 2010, Oracle and/or its affiliates. All rights reserved.
23  * Copyright (c) 2015 by Delphix. All rights reserved.
24  */
25 
26 #ifndef	_SYS_DSL_DEADLIST_H
27 #define	_SYS_DSL_DEADLIST_H
28 
29 #include <sys/bpobj.h>
30 #include <sys/zfs_context.h>
31 
32 #ifdef	__cplusplus
33 extern "C" {
34 #endif
35 
36 struct dmu_buf;
37 struct dsl_dataset;
38 
39 typedef struct dsl_deadlist_phys {
40 	uint64_t dl_used;
41 	uint64_t dl_comp;
42 	uint64_t dl_uncomp;
43 	uint64_t dl_pad[37]; /* pad out to 320b for future expansion */
44 } dsl_deadlist_phys_t;
45 
46 typedef struct dsl_deadlist {
47 	objset_t *dl_os;
48 	uint64_t dl_object;
49 	avl_tree_t dl_tree;
50 	boolean_t dl_havetree;
51 	struct dmu_buf *dl_dbuf;
52 	dsl_deadlist_phys_t *dl_phys;
53 	kmutex_t dl_lock;
54 
55 	/* if it's the old on-disk format: */
56 	bpobj_t dl_bpobj;
57 	boolean_t dl_oldfmt;
58 } dsl_deadlist_t;
59 
60 typedef struct dsl_deadlist_entry {
61 	avl_node_t dle_node;
62 	uint64_t dle_mintxg;
63 	bpobj_t dle_bpobj;
64 } dsl_deadlist_entry_t;
65 
66 void dsl_deadlist_open(dsl_deadlist_t *dl, objset_t *os, uint64_t object);
67 void dsl_deadlist_close(dsl_deadlist_t *dl);
68 uint64_t dsl_deadlist_alloc(objset_t *os, dmu_tx_t *tx);
69 void dsl_deadlist_free(objset_t *os, uint64_t dlobj, dmu_tx_t *tx);
70 void dsl_deadlist_insert(dsl_deadlist_t *dl, const blkptr_t *bp, dmu_tx_t *tx);
71 void dsl_deadlist_add_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
72 void dsl_deadlist_remove_key(dsl_deadlist_t *dl, uint64_t mintxg, dmu_tx_t *tx);
73 uint64_t dsl_deadlist_clone(dsl_deadlist_t *dl, uint64_t maxtxg,
74     uint64_t mrs_obj, dmu_tx_t *tx);
75 void dsl_deadlist_space(dsl_deadlist_t *dl,
76     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
77 void dsl_deadlist_space_range(dsl_deadlist_t *dl,
78     uint64_t mintxg, uint64_t maxtxg,
79     uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
80 void dsl_deadlist_merge(dsl_deadlist_t *dl, uint64_t obj, dmu_tx_t *tx);
81 void dsl_deadlist_move_bpobj(dsl_deadlist_t *dl, bpobj_t *bpo, uint64_t mintxg,
82     dmu_tx_t *tx);
83 boolean_t dsl_deadlist_is_open(dsl_deadlist_t *dl);
84 
85 #ifdef	__cplusplus
86 }
87 #endif
88 
89 #endif /* _SYS_DSL_DEADLIST_H */
90