1 | /* $NetBSD: ufs_wapbl.h,v 1.14 2016/11/11 22:59:26 jdolecek Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2003,2006,2008 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Wasabi Systems, Inc. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | |
33 | #ifndef _UFS_UFS_UFS_WAPBL_H_ |
34 | #define _UFS_UFS_UFS_WAPBL_H_ |
35 | |
36 | #if defined(_KERNEL_OPT) |
37 | #include "opt_wapbl.h" |
38 | #endif |
39 | |
40 | /* |
41 | * Information for the journal location stored in the superblock. |
42 | * We store the journal version, some flags, the journal location |
43 | * type, and some location specific "locators" that identify where |
44 | * the log itself is located. |
45 | */ |
46 | |
47 | /* fs->fs_journal_version */ |
48 | #define UFS_WAPBL_VERSION 1 |
49 | |
50 | /* fs->fs_journal_location */ |
51 | #define UFS_WAPBL_JOURNALLOC_NONE 0 |
52 | |
53 | #define UFS_WAPBL_JOURNALLOC_END_PARTITION 1 |
54 | #define UFS_WAPBL_EPART_ADDR 0 /* locator slots */ |
55 | #define UFS_WAPBL_EPART_COUNT 1 |
56 | #define UFS_WAPBL_EPART_BLKSZ 2 |
57 | #define UFS_WAPBL_EPART_UNUSED 3 |
58 | |
59 | #define UFS_WAPBL_JOURNALLOC_IN_FILESYSTEM 2 |
60 | #define UFS_WAPBL_INFS_ADDR 0 /* locator slots */ |
61 | #define UFS_WAPBL_INFS_COUNT 1 |
62 | #define UFS_WAPBL_INFS_BLKSZ 2 |
63 | #define UFS_WAPBL_INFS_INO 3 |
64 | |
65 | /* fs->fs_journal_flags */ |
66 | #define UFS_WAPBL_FLAGS_CREATE_LOG 0x1 |
67 | #define UFS_WAPBL_FLAGS_CLEAR_LOG 0x2 |
68 | |
69 | |
70 | /* |
71 | * The journal size is limited to between 1MB and 64MB. |
72 | * The default journal size is the filesystem size divided by |
73 | * the scale factor - this is 1M of journal per 1GB of filesystem |
74 | * space. |
75 | * |
76 | * XXX: Is 64MB too limiting? If user explicitly asks for more, allow it? |
77 | */ |
78 | #define UFS_WAPBL_JOURNAL_SCALE 1024 |
79 | #define UFS_WAPBL_MIN_JOURNAL_SIZE (1024 * 1024) |
80 | #define UFS_WAPBL_MAX_JOURNAL_SIZE (64 * 1024 * 1024) |
81 | |
82 | |
83 | #if defined(WAPBL) |
84 | |
85 | #if defined(WAPBL_DEBUG) |
86 | #define WAPBL_DEBUG_INODES |
87 | #endif |
88 | |
89 | #ifdef WAPBL_DEBUG_INODES |
90 | #error Undefine WAPBL_DEBUG_INODES or update the code. Have a nice day. |
91 | #endif |
92 | |
93 | #ifdef WAPBL_DEBUG_INODES |
94 | void ufs_wapbl_verify_inodes(struct mount *, const char *); |
95 | #endif |
96 | |
97 | static __inline int |
98 | ufs_wapbl_begin(struct mount *mp, const char *file, int line) |
99 | { |
100 | if (mp->mnt_wapbl) { |
101 | int error; |
102 | error = wapbl_begin(mp->mnt_wapbl, file, line); |
103 | if (error) |
104 | return error; |
105 | #ifdef WAPBL_DEBUG_INODES |
106 | if (mp->mnt_wapbl->wl_lock.lk_exclusivecount == 1) |
107 | ufs_wapbl_verify_inodes(mp, "wapbl_begin" ); |
108 | #endif |
109 | } |
110 | return 0; |
111 | } |
112 | |
113 | static __inline void |
114 | ufs_wapbl_end(struct mount *mp) |
115 | { |
116 | if (mp->mnt_wapbl) { |
117 | #ifdef WAPBL_DEBUG_INODES |
118 | if (mp->mnt_wapbl->wl_lock.lk_exclusivecount == 1) |
119 | ufs_wapbl_verify_inodes(mp, "wapbl_end" ); |
120 | #endif |
121 | wapbl_end(mp->mnt_wapbl); |
122 | } |
123 | } |
124 | |
125 | #define UFS_WAPBL_BEGIN(mp) \ |
126 | ufs_wapbl_begin(mp, __func__, __LINE__) |
127 | #define UFS_WAPBL_END(mp) ufs_wapbl_end(mp) |
128 | |
129 | #define UFS_WAPBL_UPDATE(vp, access, modify, flags) \ |
130 | if ((vp)->v_mount->mnt_wapbl) { \ |
131 | UFS_UPDATE(vp, access, modify, flags); \ |
132 | } |
133 | |
134 | #ifdef UFS_WAPBL_DEBUG_JLOCK |
135 | #define UFS_WAPBL_JLOCK_ASSERT(mp) \ |
136 | if (mp->mnt_wapbl) wapbl_jlock_assert(mp->mnt_wapbl) |
137 | #define UFS_WAPBL_JUNLOCK_ASSERT(mp) \ |
138 | if (mp->mnt_wapbl) wapbl_junlock_assert(mp->mnt_wapbl) |
139 | #else |
140 | #define UFS_WAPBL_JLOCK_ASSERT(mp) |
141 | #define UFS_WAPBL_JUNLOCK_ASSERT(mp) |
142 | #endif |
143 | |
144 | #define UFS_WAPBL_REGISTER_INODE(mp, ino, mode) \ |
145 | if (mp->mnt_wapbl) wapbl_register_inode(mp->mnt_wapbl, ino, mode) |
146 | #define UFS_WAPBL_UNREGISTER_INODE(mp, ino, mode) \ |
147 | if (mp->mnt_wapbl) wapbl_unregister_inode(mp->mnt_wapbl, ino, mode) |
148 | |
149 | #define UFS_WAPBL_REGISTER_DEALLOCATION(mp, blk, len, cookiep) \ |
150 | (mp->mnt_wapbl) \ |
151 | ? wapbl_register_deallocation(mp->mnt_wapbl, blk, len, \ |
152 | false, cookiep) \ |
153 | : 0 |
154 | |
155 | #define UFS_WAPBL_REGISTER_DEALLOCATION_FORCE(mp, blk, len) \ |
156 | ( \ |
157 | (mp->mnt_wapbl) \ |
158 | ? wapbl_register_deallocation(mp->mnt_wapbl, blk, len, \ |
159 | true, NULL) \ |
160 | : 0 \ |
161 | ) |
162 | |
163 | #define UFS_WAPBL_UNREGISTER_DEALLOCATION(mp, cookie) \ |
164 | if (mp->mnt_wapbl) wapbl_unregister_deallocation(mp->mnt_wapbl, cookie) |
165 | |
166 | #else /* ! WAPBL */ |
167 | #define UFS_WAPBL_BEGIN(mp) (__USE(mp), 0) |
168 | #define UFS_WAPBL_END(mp) do { } while (0) |
169 | #define UFS_WAPBL_UPDATE(vp, access, modify, flags) do { } while (0) |
170 | #define UFS_WAPBL_JLOCK_ASSERT(mp) |
171 | #define UFS_WAPBL_JUNLOCK_ASSERT(mp) |
172 | #define UFS_WAPBL_REGISTER_INODE(mp, ino, mode) do { } while (0) |
173 | #define UFS_WAPBL_UNREGISTER_INODE(mp, ino, mode) do { } while (0) |
174 | #define UFS_WAPBL_REGISTER_DEALLOCATION(mp, blk, len, cookiep) 0 |
175 | #define UFS_WAPBL_REGISTER_DEALLOCATION_FORCE(mp, blk, len) 0 |
176 | #define UFS_WAPBL_UNREGISTER_DEALLOCATION(mp, cookie) do { } while (0) |
177 | #endif |
178 | |
179 | #endif /* !_UFS_UFS_UFS_WAPBL_H_ */ |
180 | |