diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /fs/jfs/jfs_incore.h |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'fs/jfs/jfs_incore.h')
-rw-r--r-- | fs/jfs/jfs_incore.h | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/fs/jfs/jfs_incore.h b/fs/jfs/jfs_incore.h new file mode 100644 index 000000000000..ebd77c1bed66 --- /dev/null +++ b/fs/jfs/jfs_incore.h | |||
@@ -0,0 +1,197 @@ | |||
1 | /* | ||
2 | * Copyright (C) International Business Machines Corp., 2000-2004 | ||
3 | * Portions Copyright (C) Christoph Hellwig, 2001-2002 | ||
4 | * | ||
5 | * This program is free software; you can redistribute it and/or modify | ||
6 | * it under the terms of the GNU General Public License as published by | ||
7 | * the Free Software Foundation; either version 2 of the License, or | ||
8 | * (at your option) any later version. | ||
9 | * | ||
10 | * This program is distributed in the hope that it will be useful, | ||
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See | ||
13 | * the GNU General Public License for more details. | ||
14 | * | ||
15 | * You should have received a copy of the GNU General Public License | ||
16 | * along with this program; if not, write to the Free Software | ||
17 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
18 | */ | ||
19 | #ifndef _H_JFS_INCORE | ||
20 | #define _H_JFS_INCORE | ||
21 | |||
22 | #include <linux/rwsem.h> | ||
23 | #include <linux/slab.h> | ||
24 | #include <linux/bitops.h> | ||
25 | #include "jfs_types.h" | ||
26 | #include "jfs_xtree.h" | ||
27 | #include "jfs_dtree.h" | ||
28 | |||
29 | /* | ||
30 | * JFS magic number | ||
31 | */ | ||
32 | #define JFS_SUPER_MAGIC 0x3153464a /* "JFS1" */ | ||
33 | |||
34 | /* | ||
35 | * JFS-private inode information | ||
36 | */ | ||
37 | struct jfs_inode_info { | ||
38 | int fileset; /* fileset number (always 16)*/ | ||
39 | uint mode2; /* jfs-specific mode */ | ||
40 | pxd_t ixpxd; /* inode extent descriptor */ | ||
41 | dxd_t acl; /* dxd describing acl */ | ||
42 | dxd_t ea; /* dxd describing ea */ | ||
43 | time_t otime; /* time created */ | ||
44 | uint next_index; /* next available directory entry index */ | ||
45 | int acltype; /* Type of ACL */ | ||
46 | short btorder; /* access order */ | ||
47 | short btindex; /* btpage entry index*/ | ||
48 | struct inode *ipimap; /* inode map */ | ||
49 | long cflag; /* commit flags */ | ||
50 | u16 bxflag; /* xflag of pseudo buffer? */ | ||
51 | unchar agno; /* ag number */ | ||
52 | signed char active_ag; /* ag currently allocating from */ | ||
53 | lid_t blid; /* lid of pseudo buffer? */ | ||
54 | lid_t atlhead; /* anonymous tlock list head */ | ||
55 | lid_t atltail; /* anonymous tlock list tail */ | ||
56 | spinlock_t ag_lock; /* protects active_ag */ | ||
57 | struct list_head anon_inode_list; /* inodes having anonymous txns */ | ||
58 | /* | ||
59 | * rdwrlock serializes xtree between reads & writes and synchronizes | ||
60 | * changes to special inodes. It's use would be redundant on | ||
61 | * directories since the i_sem taken in the VFS is sufficient. | ||
62 | */ | ||
63 | struct rw_semaphore rdwrlock; | ||
64 | /* | ||
65 | * commit_sem serializes transaction processing on an inode. | ||
66 | * It must be taken after beginning a transaction (txBegin), since | ||
67 | * dirty inodes may be committed while a new transaction on the | ||
68 | * inode is blocked in txBegin or TxBeginAnon | ||
69 | */ | ||
70 | struct semaphore commit_sem; | ||
71 | /* xattr_sem allows us to access the xattrs without taking i_sem */ | ||
72 | struct rw_semaphore xattr_sem; | ||
73 | lid_t xtlid; /* lid of xtree lock on directory */ | ||
74 | #ifdef CONFIG_JFS_POSIX_ACL | ||
75 | struct posix_acl *i_acl; | ||
76 | struct posix_acl *i_default_acl; | ||
77 | #endif | ||
78 | union { | ||
79 | struct { | ||
80 | xtpage_t _xtroot; /* 288: xtree root */ | ||
81 | struct inomap *_imap; /* 4: inode map header */ | ||
82 | } file; | ||
83 | struct { | ||
84 | struct dir_table_slot _table[12]; /* 96: dir index */ | ||
85 | dtroot_t _dtroot; /* 288: dtree root */ | ||
86 | } dir; | ||
87 | struct { | ||
88 | unchar _unused[16]; /* 16: */ | ||
89 | dxd_t _dxd; /* 16: */ | ||
90 | unchar _inline[128]; /* 128: inline symlink */ | ||
91 | /* _inline_ea may overlay the last part of | ||
92 | * file._xtroot if maxentry = XTROOTINITSLOT | ||
93 | */ | ||
94 | unchar _inline_ea[128]; /* 128: inline extended attr */ | ||
95 | } link; | ||
96 | } u; | ||
97 | u32 dev; /* will die when we get wide dev_t */ | ||
98 | struct inode vfs_inode; | ||
99 | }; | ||
100 | #define i_xtroot u.file._xtroot | ||
101 | #define i_imap u.file._imap | ||
102 | #define i_dirtable u.dir._table | ||
103 | #define i_dtroot u.dir._dtroot | ||
104 | #define i_inline u.link._inline | ||
105 | #define i_inline_ea u.link._inline_ea | ||
106 | |||
107 | #define JFS_ACL_NOT_CACHED ((void *)-1) | ||
108 | |||
109 | #define IREAD_LOCK(ip) down_read(&JFS_IP(ip)->rdwrlock) | ||
110 | #define IREAD_UNLOCK(ip) up_read(&JFS_IP(ip)->rdwrlock) | ||
111 | #define IWRITE_LOCK(ip) down_write(&JFS_IP(ip)->rdwrlock) | ||
112 | #define IWRITE_UNLOCK(ip) up_write(&JFS_IP(ip)->rdwrlock) | ||
113 | |||
114 | /* | ||
115 | * cflag | ||
116 | */ | ||
117 | enum cflags { | ||
118 | COMMIT_Nolink, /* inode committed with zero link count */ | ||
119 | COMMIT_Inlineea, /* commit inode inline EA */ | ||
120 | COMMIT_Freewmap, /* free WMAP at iClose() */ | ||
121 | COMMIT_Dirty, /* Inode is really dirty */ | ||
122 | COMMIT_Dirtable, /* commit changes to di_dirtable */ | ||
123 | COMMIT_Stale, /* data extent is no longer valid */ | ||
124 | COMMIT_Synclist, /* metadata pages on group commit synclist */ | ||
125 | }; | ||
126 | |||
127 | #define set_cflag(flag, ip) set_bit(flag, &(JFS_IP(ip)->cflag)) | ||
128 | #define clear_cflag(flag, ip) clear_bit(flag, &(JFS_IP(ip)->cflag)) | ||
129 | #define test_cflag(flag, ip) test_bit(flag, &(JFS_IP(ip)->cflag)) | ||
130 | #define test_and_clear_cflag(flag, ip) \ | ||
131 | test_and_clear_bit(flag, &(JFS_IP(ip)->cflag)) | ||
132 | /* | ||
133 | * JFS-private superblock information. | ||
134 | */ | ||
135 | struct jfs_sb_info { | ||
136 | struct super_block *sb; /* Point back to vfs super block */ | ||
137 | unsigned long mntflag; /* aggregate attributes */ | ||
138 | struct inode *ipbmap; /* block map inode */ | ||
139 | struct inode *ipaimap; /* aggregate inode map inode */ | ||
140 | struct inode *ipaimap2; /* secondary aimap inode */ | ||
141 | struct inode *ipimap; /* aggregate inode map inode */ | ||
142 | struct jfs_log *log; /* log */ | ||
143 | struct list_head log_list; /* volumes associated with a journal */ | ||
144 | short bsize; /* logical block size */ | ||
145 | short l2bsize; /* log2 logical block size */ | ||
146 | short nbperpage; /* blocks per page */ | ||
147 | short l2nbperpage; /* log2 blocks per page */ | ||
148 | short l2niperblk; /* log2 inodes per page */ | ||
149 | dev_t logdev; /* external log device */ | ||
150 | uint aggregate; /* volume identifier in log record */ | ||
151 | pxd_t logpxd; /* pxd describing log */ | ||
152 | pxd_t fsckpxd; /* pxd describing fsck wkspc */ | ||
153 | pxd_t ait2; /* pxd describing AIT copy */ | ||
154 | char uuid[16]; /* 128-bit uuid for volume */ | ||
155 | char loguuid[16]; /* 128-bit uuid for log */ | ||
156 | /* | ||
157 | * commit_state is used for synchronization of the jfs_commit | ||
158 | * threads. It is protected by LAZY_LOCK(). | ||
159 | */ | ||
160 | int commit_state; /* commit state */ | ||
161 | /* Formerly in ipimap */ | ||
162 | uint gengen; /* inode generation generator*/ | ||
163 | uint inostamp; /* shows inode belongs to fileset*/ | ||
164 | |||
165 | /* Formerly in ipbmap */ | ||
166 | struct bmap *bmap; /* incore bmap descriptor */ | ||
167 | struct nls_table *nls_tab; /* current codepage */ | ||
168 | uint state; /* mount/recovery state */ | ||
169 | unsigned long flag; /* mount time flags */ | ||
170 | uint p_state; /* state prior to going no integrity */ | ||
171 | }; | ||
172 | |||
173 | /* jfs_sb_info commit_state */ | ||
174 | #define IN_LAZYCOMMIT 1 | ||
175 | |||
176 | static inline struct jfs_inode_info *JFS_IP(struct inode *inode) | ||
177 | { | ||
178 | return list_entry(inode, struct jfs_inode_info, vfs_inode); | ||
179 | } | ||
180 | |||
181 | static inline int jfs_dirtable_inline(struct inode *inode) | ||
182 | { | ||
183 | return (JFS_IP(inode)->next_index <= (MAX_INLINE_DIRTABLE_ENTRY + 1)); | ||
184 | } | ||
185 | |||
186 | static inline struct jfs_sb_info *JFS_SBI(struct super_block *sb) | ||
187 | { | ||
188 | return sb->s_fs_info; | ||
189 | } | ||
190 | |||
191 | static inline int isReadOnly(struct inode *inode) | ||
192 | { | ||
193 | if (JFS_SBI(inode->i_sb)->log) | ||
194 | return 0; | ||
195 | return 1; | ||
196 | } | ||
197 | #endif /* _H_JFS_INCORE */ | ||