blob: e58155d0390caae88af9d13dd7d40bd308fa1570 [file] [log] [blame]
Josef Bacikfcebe452014-05-13 17:30:47 -07001/*
2 * Copyright (C) 2014 Facebook. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19#ifndef __BTRFS_QGROUP__
20#define __BTRFS_QGROUP__
21
Qu Wenruo3368d002015-04-16 14:34:17 +080022#include "ulist.h"
23#include "delayed-ref.h"
24
Josef Bacikfcebe452014-05-13 17:30:47 -070025/*
26 * A description of the operations, all of these operations only happen when we
27 * are adding the 1st reference for that subvolume in the case of adding space
28 * or on the last reference delete in the case of subtraction. The only
29 * exception is the last one, which is added for confusion.
30 *
31 * BTRFS_QGROUP_OPER_ADD_EXCL: adding bytes where this subvolume is the only
32 * one pointing at the bytes we are adding. This is called on the first
33 * allocation.
34 *
35 * BTRFS_QGROUP_OPER_ADD_SHARED: adding bytes where this bytenr is going to be
36 * shared between subvols. This is called on the creation of a ref that already
37 * has refs from a different subvolume, so basically reflink.
38 *
39 * BTRFS_QGROUP_OPER_SUB_EXCL: removing bytes where this subvolume is the only
40 * one referencing the range.
41 *
42 * BTRFS_QGROUP_OPER_SUB_SHARED: removing bytes where this subvolume shares with
43 * refs with other subvolumes.
44 */
45enum btrfs_qgroup_operation_type {
46 BTRFS_QGROUP_OPER_ADD_EXCL,
47 BTRFS_QGROUP_OPER_ADD_SHARED,
48 BTRFS_QGROUP_OPER_SUB_EXCL,
49 BTRFS_QGROUP_OPER_SUB_SHARED,
Mark Fasheh11526512014-07-17 12:39:01 -070050 BTRFS_QGROUP_OPER_SUB_SUBTREE,
Josef Bacikfcebe452014-05-13 17:30:47 -070051};
52
53struct btrfs_qgroup_operation {
54 u64 ref_root;
55 u64 bytenr;
56 u64 num_bytes;
57 u64 seq;
58 enum btrfs_qgroup_operation_type type;
59 struct seq_list elem;
60 struct rb_node n;
61 struct list_head list;
62};
63
Qu Wenruo3368d002015-04-16 14:34:17 +080064/*
65 * Record a dirty extent, and info qgroup to update quota on it
66 * TODO: Use kmem cache to alloc it.
67 */
68struct btrfs_qgroup_extent_record {
69 struct rb_node node;
70 u64 bytenr;
71 u64 num_bytes;
72 struct ulist *old_roots;
73};
74
Josef Bacikfcebe452014-05-13 17:30:47 -070075int btrfs_quota_enable(struct btrfs_trans_handle *trans,
76 struct btrfs_fs_info *fs_info);
77int btrfs_quota_disable(struct btrfs_trans_handle *trans,
78 struct btrfs_fs_info *fs_info);
79int btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info);
80void btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info);
81int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info);
82int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans,
83 struct btrfs_fs_info *fs_info, u64 src, u64 dst);
84int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans,
85 struct btrfs_fs_info *fs_info, u64 src, u64 dst);
86int btrfs_create_qgroup(struct btrfs_trans_handle *trans,
Dongsheng Yang4087cf22015-01-18 10:59:23 -050087 struct btrfs_fs_info *fs_info, u64 qgroupid);
Josef Bacikfcebe452014-05-13 17:30:47 -070088int btrfs_remove_qgroup(struct btrfs_trans_handle *trans,
89 struct btrfs_fs_info *fs_info, u64 qgroupid);
90int btrfs_limit_qgroup(struct btrfs_trans_handle *trans,
91 struct btrfs_fs_info *fs_info, u64 qgroupid,
92 struct btrfs_qgroup_limit *limit);
93int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info);
94void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info);
95struct btrfs_delayed_extent_op;
96int btrfs_qgroup_record_ref(struct btrfs_trans_handle *trans,
97 struct btrfs_fs_info *fs_info, u64 ref_root,
98 u64 bytenr, u64 num_bytes,
99 enum btrfs_qgroup_operation_type type,
100 int mod_seq);
Qu Wenruo3368d002015-04-16 14:34:17 +0800101struct btrfs_qgroup_extent_record
102*btrfs_qgroup_insert_dirty_extent(struct btrfs_delayed_ref_root *delayed_refs,
103 struct btrfs_qgroup_extent_record *record);
Josef Bacikfcebe452014-05-13 17:30:47 -0700104int btrfs_delayed_qgroup_accounting(struct btrfs_trans_handle *trans,
105 struct btrfs_fs_info *fs_info);
106void btrfs_remove_qgroup_operation(struct btrfs_trans_handle *trans,
107 struct btrfs_fs_info *fs_info,
108 struct btrfs_qgroup_operation *oper);
109int btrfs_run_qgroups(struct btrfs_trans_handle *trans,
110 struct btrfs_fs_info *fs_info);
111int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans,
112 struct btrfs_fs_info *fs_info, u64 srcid, u64 objectid,
113 struct btrfs_qgroup_inherit *inherit);
Josef Bacikfcebe452014-05-13 17:30:47 -0700114int btrfs_qgroup_reserve(struct btrfs_root *root, u64 num_bytes);
115void btrfs_qgroup_free(struct btrfs_root *root, u64 num_bytes);
116
117void assert_qgroups_uptodate(struct btrfs_trans_handle *trans);
118
119#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
120int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid,
121 u64 rfer, u64 excl);
122#endif
123
124#endif /* __BTRFS_QGROUP__ */