1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
|
/*
* Copyright (C) International Business Machines Corp., 2000-2004
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
* the GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef _H_JFS_TXNMGR
#define _H_JFS_TXNMGR
#include "jfs_logmgr.h"
/*
* Hide implementation of TxBlock and TxLock
*/
#define tid_to_tblock(tid) (&TxBlock[tid])
#define lid_to_tlock(lid) (&TxLock[lid])
/*
* transaction block
*/
struct tblock {
/*
* tblock and jbuf_t common area: struct logsyncblk
*
* the following 5 fields are the same as struct logsyncblk
* which is common to tblock and jbuf to form logsynclist
*/
u16 xflag; /* tx commit type */
u16 flag; /* tx commit state */
lid_t dummy; /* Must keep structures common */
s32 lsn; /* recovery lsn */
struct list_head synclist; /* logsynclist link */
/* lock management */
struct super_block *sb; /* super block */
lid_t next; /* index of first tlock of tid */
lid_t last; /* index of last tlock of tid */
wait_queue_head_t waitor; /* tids waiting on this tid */
/* log management */
u32 logtid; /* log transaction id */
/* commit management */
struct list_head cqueue; /* commit queue list */
s32 clsn; /* commit lsn */
struct lbuf *bp;
s32 pn; /* commit record log page number */
s32 eor; /* commit record eor */
wait_queue_head_t gcwait; /* group commit event list:
* ready transactions wait on this
* event for group commit completion.
*/
union {
struct inode *ip; /* inode being deleted */
pxd_t ixpxd; /* pxd of inode extent for created inode */
} u;
u32 ino; /* inode number being created */
};
extern struct tblock *TxBlock; /* transaction block table */
/* commit flags: tblk->xflag */
#define COMMIT_SYNC 0x0001 /* synchronous commit */
#define COMMIT_FORCE 0x0002 /* force pageout at end of commit */
#define COMMIT_FLUSH 0x0004 /* init flush at end of commit */
#define COMMIT_MAP 0x00f0
#define COMMIT_PMAP 0x0010 /* update pmap */
#define COMMIT_WMAP 0x0020 /* update wmap */
#define COMMIT_PWMAP 0x0040 /* update pwmap */
#define COMMIT_FREE 0x0f00
#define COMMIT_DELETE 0x0100 /* inode delete */
#define COMMIT_TRUNCATE 0x0200 /* file truncation */
#define COMMIT_CREATE 0x0400 /* inode create */
#define COMMIT_LAZY 0x0800 /* lazy commit */
#define COMMIT_PAGE 0x1000 /* Identifies element as metapage */
#define COMMIT_INODE 0x2000 /* Identifies element as inode */
/* group commit flags tblk->flag: see jfs_logmgr.h */
/*
* transaction lock
*/
struct tlock {
lid_t next; /* 2: index next lockword on tid locklist
* next lockword on freelist
*/
tid_t tid; /* 2: transaction id holding lock */
u16 flag; /* 2: lock control */
u16 type; /* 2: log type */
struct metapage *mp; /* 4/8: object page buffer locked */
struct inode *ip; /* 4/8: object */
/* (16) */
s16 lock[24]; /* 48: overlay area */
}; /* (64) */
extern struct tlock *TxLock; /* transaction lock table */
/*
* tlock flag
*/
/* txLock state */
#define tlckPAGELOCK 0x8000
#define tlckINODELOCK 0x4000
#define tlckLINELOCK 0x2000
#define tlckINLINELOCK 0x1000
/* lmLog state */
#define tlckLOG 0x0800
/* updateMap state */
#define tlckUPDATEMAP 0x0080
/* freeLock state */
#define tlckFREELOCK 0x0008
#define tlckWRITEPAGE 0x0004
#define tlckFREEPAGE 0x0002
/*
* tlock type
*/
#define tlckTYPE 0xfe00
#define tlckINODE 0x8000
#define tlckXTREE 0x4000
#define tlckDTREE 0x2000
#define tlckMAP 0x1000
#define tlckEA 0x0800
#define tlckACL 0x0400
#define tlckDATA 0x0200
#define tlckBTROOT 0x0100
#define tlckOPERATION 0x00ff
#define tlckGROW 0x0001 /* file grow */
#define tlckREMOVE 0x0002 /* file delete */
#define tlckTRUNCATE 0x0004 /* file truncate */
#define tlckRELOCATE 0x0008 /* file/directory relocate */
#define tlckENTRY 0x0001 /* directory insert/delete */
#define tlckEXTEND 0x0002 /* directory extend in-line */
#define tlckSPLIT 0x0010 /* splited page */
#define tlckNEW 0x0020 /* new page from split */
#define tlckFREE 0x0040 /* free page */
#define tlckRELINK 0x0080 /* update sibling pointer */
/*
* linelock for lmLog()
*
* note: linelock and its variations are overlaid
* at tlock.lock: watch for alignment;
*/
struct lv {
u8 offset; /* 1: */
u8 length; /* 1: */
}; /* (2) */
#define TLOCKSHORT 20
#define TLOCKLONG 28
struct linelock {
lid_t next; /* 2: next linelock */
s8 maxcnt; /* 1: */
s8 index; /* 1: */
u16 flag; /* 2: */
u8 type; /* 1: */
u8 l2linesize; /* 1: log2 of linesize */
/* (8) */
struct lv lv[20]; /* 40: */
}; /* (48) */
#define dt_lock linelock
struct xtlock {
lid_t next; /* 2: */
s8 maxcnt; /* 1: */
s8 index; /* 1: */
u16 flag; /* 2: */
u8 type; /* 1: */
u8 l2linesize; /* 1: log2 of linesize */
/* (8) */
struct lv header; /* 2: */
struct lv lwm; /* 2: low water mark */
struct lv hwm; /* 2: high water mark */
struct lv twm; /* 2: */
/* (16) */
s32 pxdlock[8]; /* 32: */
}; /* (48) */
/*
* maplock for txUpdateMap()
*
* note: maplock and its variations are overlaid
* at tlock.lock/linelock: watch for alignment;
* N.B. next field may be set by linelock, and should not
* be modified by maplock;
* N.B. index of the first pxdlock specifies index of next
* free maplock (i.e., number of maplock) in the tlock;
*/
struct maplock {
lid_t next; /* 2: */
u8 maxcnt; /* 2: */
u8 index; /* 2: next free maplock index */
u16 flag; /* 2: */
u8 type; /* 1: */
u8 count; /* 1: number of pxd/xad */
/* (8) */
pxd_t pxd; /* 8: */
}; /* (16): */
/* maplock flag */
#define mlckALLOC 0x00f0
#define mlckALLOCXADLIST 0x0080
#define mlckALLOCPXDLIST 0x0040
#define mlckALLOCXAD 0x0020
#define mlckALLOCPXD 0x0010
#define mlckFREE 0x000f
#define mlckFREEXADLIST 0x0008
#define mlckFREEPXDLIST 0x0004
#define mlckFREEXAD 0x0002
#define mlckFREEPXD 0x0001
#define pxd_lock maplock
struct xdlistlock {
lid_t next; /* 2: */
u8 maxcnt; /* 2: */
u8 index; /* 2: */
u16 flag; /* 2: */
u8 type; /* 1: */
u8 count; /* 1: number of pxd/xad */
/* (8) */
/*
* We need xdlist to be 64 bits (8 bytes), regardless of
* whether void * is 32 or 64 bits
*/
union {
void *_xdlist; /* pxd/xad list */
s64 pad; /* 8: Force 64-bit xdlist size */
} union64;
}; /* (16): */
#define xdlist union64._xdlist
/*
* commit
*
* parameter to the commit manager routines
*/
struct commit {
tid_t tid; /* tid = index of tblock */
int flag; /* flags */
struct jfs_log *log; /* log */
struct super_block *sb; /* superblock */
int nip; /* number of entries in iplist */
struct inode **iplist; /* list of pointers to inodes */
/* log record descriptor on 64-bit boundary */
struct lrd lrd; /* : log record descriptor */
};
/*
* external declarations
*/
extern struct tlock *txLock(tid_t tid, struct inode *ip, struct metapage *mp,
int flag);
extern struct tlock *txMaplock(tid_t tid, struct inode *ip, int flag);
extern int txCommit(tid_t tid, int nip, struct inode **iplist, int flag);
extern tid_t txBegin(struct super_block *sb, int flag);
extern void txBeginAnon(struct super_block *sb);
extern void txEnd(tid_t tid);
extern void txAbort(tid_t tid, int dirty);
extern struct linelock *txLinelock(struct linelock * tlock);
extern void txFreeMap(struct inode *ip, struct maplock * maplock,
struct tblock * tblk, int maptype);
extern void txEA(tid_t tid, struct inode *ip, dxd_t * oldea, dxd_t * newea);
extern void txFreelock(struct inode *ip);
extern int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
struct tlock * tlck);
extern void txQuiesce(struct super_block *sb);
extern void txResume(struct super_block *sb);
#endif /* _H_JFS_TXNMGR */
|
