xref: /illumos-gate/usr/src/uts/common/fs/zfs/bplist.c (revision b23a7923)
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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
23  */
24 
25 #include <sys/bplist.h>
26 #include <sys/zfs_context.h>
27 
28 
29 void
30 bplist_create(bplist_t *bpl)
31 {
32 	mutex_init(&bpl->bpl_lock, NULL, MUTEX_DEFAULT, NULL);
33 	list_create(&bpl->bpl_list, sizeof (bplist_entry_t),
34 	    offsetof(bplist_entry_t, bpe_node));
35 }
36 
37 void
38 bplist_destroy(bplist_t *bpl)
39 {
40 	list_destroy(&bpl->bpl_list);
41 	mutex_destroy(&bpl->bpl_lock);
42 }
43 
44 void
45 bplist_append(bplist_t *bpl, const blkptr_t *bp)
46 {
47 	bplist_entry_t *bpe = kmem_alloc(sizeof (*bpe), KM_SLEEP);
48 
49 	mutex_enter(&bpl->bpl_lock);
50 	bpe->bpe_blk = *bp;
51 	list_insert_tail(&bpl->bpl_list, bpe);
52 	mutex_exit(&bpl->bpl_lock);
53 }
54 
55 void
56 bplist_iterate(bplist_t *bpl, bplist_itor_t *func, void *arg, dmu_tx_t *tx)
57 {
58 	bplist_entry_t *bpe;
59 
60 	mutex_enter(&bpl->bpl_lock);
61 	while (bpe = list_head(&bpl->bpl_list)) {
62 		list_remove(&bpl->bpl_list, bpe);
63 		mutex_exit(&bpl->bpl_lock);
64 		func(arg, &bpe->bpe_blk, tx);
65 		kmem_free(bpe, sizeof (*bpe));
66 		mutex_enter(&bpl->bpl_lock);
67 	}
68 	mutex_exit(&bpl->bpl_lock);
69 }
70