Merge tag 'md/4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shli/md
[platform/kernel/linux-rpi.git] / fs / btrfs / orphan.c
1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * Copyright (C) 2008 Red Hat.  All rights reserved.
4  */
5
6 #include "ctree.h"
7 #include "disk-io.h"
8
9 int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans,
10                              struct btrfs_root *root, u64 offset)
11 {
12         struct btrfs_path *path;
13         struct btrfs_key key;
14         int ret = 0;
15
16         key.objectid = BTRFS_ORPHAN_OBJECTID;
17         key.type = BTRFS_ORPHAN_ITEM_KEY;
18         key.offset = offset;
19
20         path = btrfs_alloc_path();
21         if (!path)
22                 return -ENOMEM;
23
24         ret = btrfs_insert_empty_item(trans, root, path, &key, 0);
25
26         btrfs_free_path(path);
27         return ret;
28 }
29
30 int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
31                           struct btrfs_root *root, u64 offset)
32 {
33         struct btrfs_path *path;
34         struct btrfs_key key;
35         int ret = 0;
36
37         key.objectid = BTRFS_ORPHAN_OBJECTID;
38         key.type = BTRFS_ORPHAN_ITEM_KEY;
39         key.offset = offset;
40
41         path = btrfs_alloc_path();
42         if (!path)
43                 return -ENOMEM;
44
45         ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
46         if (ret < 0)
47                 goto out;
48         if (ret) { /* JDM: Really? */
49                 ret = -ENOENT;
50                 goto out;
51         }
52
53         ret = btrfs_del_item(trans, root, path);
54
55 out:
56         btrfs_free_path(path);
57         return ret;
58 }