tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1/*
2 * Copyright (C) 2001-2002 Sistina Software (UK) Limited.
3 * Copyright (C) 2006-2008 Red Hat GmbH
4 *
5 * This file is released under the GPL.
6 */
7
8#include "dm-exception-store.h"
9
10#include <linux/mm.h>
11#include <linux/pagemap.h>
12#include <linux/vmalloc.h>
13#include <linux/slab.h>
14
15#define DM_MSG_PREFIX "snapshot exception stores"
16
17int dm_exception_store_init(void)
18{
19 int r;
20
21 r = dm_transient_snapshot_init();
22 if (r) {
23 DMERR("Unable to register transient exception store type.");
24 goto transient_fail;
25 }
26
27 r = dm_persistent_snapshot_init();
28 if (r) {
29 DMERR("Unable to register persistent exception store type");
30 goto persistent_fail;
31 }
32
33 return 0;
34
35persistent_fail:
36 dm_persistent_snapshot_exit();
37transient_fail:
38 return r;
39}
40
41void dm_exception_store_exit(void)
42{
43 dm_persistent_snapshot_exit();
44 dm_transient_snapshot_exit();
45}