1 /* SPDX-License-Identifier: GPL-2.0-or-later * <<
2 /* 1 /*
3 * Copyright (C) International Business Mach 2 * Copyright (C) International Business Machines Corp., 2000-2004
>> 3 *
>> 4 * This program is free software; you can redistribute it and/or modify
>> 5 * it under the terms of the GNU General Public License as published by
>> 6 * the Free Software Foundation; either version 2 of the License, or
>> 7 * (at your option) any later version.
>> 8 *
>> 9 * This program is distributed in the hope that it will be useful,
>> 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
>> 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
>> 12 * the GNU General Public License for more details.
>> 13 *
>> 14 * You should have received a copy of the GNU General Public License
>> 15 * along with this program; if not, write to the Free Software
>> 16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
4 */ 17 */
5 #ifndef _H_JFS_TXNMGR 18 #ifndef _H_JFS_TXNMGR
6 #define _H_JFS_TXNMGR 19 #define _H_JFS_TXNMGR
7 20
8 #include "jfs_logmgr.h" 21 #include "jfs_logmgr.h"
9 22
10 /* 23 /*
11 * Hide implementation of TxBlock and TxLock 24 * Hide implementation of TxBlock and TxLock
12 */ 25 */
13 #define tid_to_tblock(tid) (&TxBlock[tid]) 26 #define tid_to_tblock(tid) (&TxBlock[tid])
14 27
15 #define lid_to_tlock(lid) (&TxLock[lid]) 28 #define lid_to_tlock(lid) (&TxLock[lid])
16 29
17 /* 30 /*
18 * transaction block 31 * transaction block
19 */ 32 */
20 struct tblock { 33 struct tblock {
21 /* 34 /*
22 * tblock and jbuf_t common area: stru 35 * tblock and jbuf_t common area: struct logsyncblk
23 * 36 *
24 * the following 5 fields are the same 37 * the following 5 fields are the same as struct logsyncblk
25 * which is common to tblock and jbuf 38 * which is common to tblock and jbuf to form logsynclist
26 */ 39 */
27 u16 xflag; /* tx commit t 40 u16 xflag; /* tx commit type */
28 u16 flag; /* tx commit s 41 u16 flag; /* tx commit state */
29 lid_t dummy; /* Must keep s 42 lid_t dummy; /* Must keep structures common */
30 s32 lsn; /* recovery ls 43 s32 lsn; /* recovery lsn */
31 struct list_head synclist; /* log 44 struct list_head synclist; /* logsynclist link */
32 45
33 /* lock management */ 46 /* lock management */
34 struct super_block *sb; /* super block 47 struct super_block *sb; /* super block */
35 lid_t next; /* index of fi 48 lid_t next; /* index of first tlock of tid */
36 lid_t last; /* index of la 49 lid_t last; /* index of last tlock of tid */
37 wait_queue_head_t waitor; /* tid 50 wait_queue_head_t waitor; /* tids waiting on this tid */
38 51
39 /* log management */ 52 /* log management */
40 u32 logtid; /* log transac 53 u32 logtid; /* log transaction id */
41 54
42 /* commit management */ 55 /* commit management */
43 struct list_head cqueue; /* com !! 56 struct tblock *cqnext; /* commit queue link */
44 s32 clsn; /* commit lsn 57 s32 clsn; /* commit lsn */
45 struct lbuf *bp; 58 struct lbuf *bp;
46 s32 pn; /* commit reco 59 s32 pn; /* commit record log page number */
47 s32 eor; /* commit reco 60 s32 eor; /* commit record eor */
48 wait_queue_head_t gcwait; /* gro 61 wait_queue_head_t gcwait; /* group commit event list:
49 * rea 62 * ready transactions wait on this
50 * eve 63 * event for group commit completion.
51 */ 64 */
52 union { !! 65 struct inode *ip; /* inode being created or deleted */
53 struct inode *ip; /* inode bei <<
54 pxd_t ixpxd; /* pxd of inod <<
55 } u; <<
56 u32 ino; /* inode numbe <<
57 }; 66 };
58 67
59 extern struct tblock *TxBlock; /* transaction 68 extern struct tblock *TxBlock; /* transaction block table */
60 69
61 /* commit flags: tblk->xflag */ 70 /* commit flags: tblk->xflag */
62 #define COMMIT_SYNC 0x0001 /* synchronous 71 #define COMMIT_SYNC 0x0001 /* synchronous commit */
63 #define COMMIT_FORCE 0x0002 /* force pageo 72 #define COMMIT_FORCE 0x0002 /* force pageout at end of commit */
64 #define COMMIT_FLUSH 0x0004 /* init flush 73 #define COMMIT_FLUSH 0x0004 /* init flush at end of commit */
65 #define COMMIT_MAP 0x00f0 74 #define COMMIT_MAP 0x00f0
66 #define COMMIT_PMAP 0x0010 /* update pmap 75 #define COMMIT_PMAP 0x0010 /* update pmap */
67 #define COMMIT_WMAP 0x0020 /* update wmap 76 #define COMMIT_WMAP 0x0020 /* update wmap */
68 #define COMMIT_PWMAP 0x0040 /* update pwma 77 #define COMMIT_PWMAP 0x0040 /* update pwmap */
69 #define COMMIT_FREE 0x0f00 78 #define COMMIT_FREE 0x0f00
70 #define COMMIT_DELETE 0x0100 /* inode delet 79 #define COMMIT_DELETE 0x0100 /* inode delete */
71 #define COMMIT_TRUNCATE 0x0200 /* file trunca 80 #define COMMIT_TRUNCATE 0x0200 /* file truncation */
72 #define COMMIT_CREATE 0x0400 /* inode creat 81 #define COMMIT_CREATE 0x0400 /* inode create */
73 #define COMMIT_LAZY 0x0800 /* lazy commit 82 #define COMMIT_LAZY 0x0800 /* lazy commit */
74 #define COMMIT_PAGE 0x1000 /* Identifies 83 #define COMMIT_PAGE 0x1000 /* Identifies element as metapage */
75 #define COMMIT_INODE 0x2000 /* Identifies 84 #define COMMIT_INODE 0x2000 /* Identifies element as inode */
76 85
77 /* group commit flags tblk->flag: see jfs_logm 86 /* group commit flags tblk->flag: see jfs_logmgr.h */
78 87
79 /* 88 /*
80 * transaction lock 89 * transaction lock
81 */ 90 */
82 struct tlock { 91 struct tlock {
83 lid_t next; /* 2: index ne 92 lid_t next; /* 2: index next lockword on tid locklist
84 * ne !! 93 * next lockword on freelist
85 */ 94 */
86 tid_t tid; /* 2: transact 95 tid_t tid; /* 2: transaction id holding lock */
87 96
88 u16 flag; /* 2: lock con 97 u16 flag; /* 2: lock control */
89 u16 type; /* 2: log type 98 u16 type; /* 2: log type */
90 99
91 struct metapage *mp; /* 4/8: object 100 struct metapage *mp; /* 4/8: object page buffer locked */
92 struct inode *ip; /* 4/8: object 101 struct inode *ip; /* 4/8: object */
93 /* (16) */ 102 /* (16) */
94 103
95 s16 lock[24]; /* 48: overlay 104 s16 lock[24]; /* 48: overlay area */
96 }; /* (64) */ 105 }; /* (64) */
97 106
98 extern struct tlock *TxLock; /* transaction 107 extern struct tlock *TxLock; /* transaction lock table */
99 108
100 /* 109 /*
101 * tlock flag 110 * tlock flag
102 */ 111 */
103 /* txLock state */ 112 /* txLock state */
104 #define tlckPAGELOCK 0x8000 113 #define tlckPAGELOCK 0x8000
105 #define tlckINODELOCK 0x4000 114 #define tlckINODELOCK 0x4000
106 #define tlckLINELOCK 0x2000 115 #define tlckLINELOCK 0x2000
107 #define tlckINLINELOCK 0x1000 116 #define tlckINLINELOCK 0x1000
108 /* lmLog state */ 117 /* lmLog state */
109 #define tlckLOG 0x0800 118 #define tlckLOG 0x0800
110 /* updateMap state */ 119 /* updateMap state */
111 #define tlckUPDATEMAP 0x0080 120 #define tlckUPDATEMAP 0x0080
112 #define tlckDIRECTORY 0x0040 <<
113 /* freeLock state */ 121 /* freeLock state */
114 #define tlckFREELOCK 0x0008 122 #define tlckFREELOCK 0x0008
115 #define tlckWRITEPAGE 0x0004 123 #define tlckWRITEPAGE 0x0004
116 #define tlckFREEPAGE 0x0002 124 #define tlckFREEPAGE 0x0002
117 125
118 /* 126 /*
119 * tlock type 127 * tlock type
120 */ 128 */
121 #define tlckTYPE 0xfe00 129 #define tlckTYPE 0xfe00
122 #define tlckINODE 0x8000 130 #define tlckINODE 0x8000
123 #define tlckXTREE 0x4000 131 #define tlckXTREE 0x4000
124 #define tlckDTREE 0x2000 132 #define tlckDTREE 0x2000
125 #define tlckMAP 0x1000 133 #define tlckMAP 0x1000
126 #define tlckEA 0x0800 134 #define tlckEA 0x0800
127 #define tlckACL 0x0400 135 #define tlckACL 0x0400
128 #define tlckDATA 0x0200 136 #define tlckDATA 0x0200
129 #define tlckBTROOT 0x0100 137 #define tlckBTROOT 0x0100
130 138
131 #define tlckOPERATION 0x00ff 139 #define tlckOPERATION 0x00ff
132 #define tlckGROW 0x0001 /* fil 140 #define tlckGROW 0x0001 /* file grow */
133 #define tlckREMOVE 0x0002 /* fil 141 #define tlckREMOVE 0x0002 /* file delete */
134 #define tlckTRUNCATE 0x0004 /* fil 142 #define tlckTRUNCATE 0x0004 /* file truncate */
135 #define tlckRELOCATE 0x0008 /* fil 143 #define tlckRELOCATE 0x0008 /* file/directory relocate */
136 #define tlckENTRY 0x0001 /* dir 144 #define tlckENTRY 0x0001 /* directory insert/delete */
137 #define tlckEXTEND 0x0002 /* dir 145 #define tlckEXTEND 0x0002 /* directory extend in-line */
138 #define tlckSPLIT 0x0010 /* spl 146 #define tlckSPLIT 0x0010 /* splited page */
139 #define tlckNEW 0x0020 /* new 147 #define tlckNEW 0x0020 /* new page from split */
140 #define tlckFREE 0x0040 /* fre 148 #define tlckFREE 0x0040 /* free page */
141 #define tlckRELINK 0x0080 /* upd 149 #define tlckRELINK 0x0080 /* update sibling pointer */
142 150
143 /* 151 /*
144 * linelock for lmLog() 152 * linelock for lmLog()
145 * 153 *
146 * note: linelock and its variations are overl 154 * note: linelock and its variations are overlaid
147 * at tlock.lock: watch for alignment; 155 * at tlock.lock: watch for alignment;
148 */ 156 */
149 struct lv { 157 struct lv {
150 u8 offset; /* 1: */ 158 u8 offset; /* 1: */
151 u8 length; /* 1: */ 159 u8 length; /* 1: */
152 }; /* (2) */ 160 }; /* (2) */
153 161
154 #define TLOCKSHORT 20 162 #define TLOCKSHORT 20
155 #define TLOCKLONG 28 163 #define TLOCKLONG 28
156 164
157 struct linelock { 165 struct linelock {
158 lid_t next; /* 2: next lin 166 lid_t next; /* 2: next linelock */
159 167
160 s8 maxcnt; /* 1: */ 168 s8 maxcnt; /* 1: */
161 s8 index; /* 1: */ 169 s8 index; /* 1: */
162 170
163 u16 flag; /* 2: */ 171 u16 flag; /* 2: */
164 u8 type; /* 1: */ 172 u8 type; /* 1: */
165 u8 l2linesize; /* 1: log2 of 173 u8 l2linesize; /* 1: log2 of linesize */
166 /* (8) */ 174 /* (8) */
167 175
168 struct lv lv[20]; /* 40: */ 176 struct lv lv[20]; /* 40: */
169 }; /* (48) */ !! 177 }; /* (48) */
170 178
171 #define dt_lock linelock 179 #define dt_lock linelock
172 180
173 struct xtlock { 181 struct xtlock {
174 lid_t next; /* 2: */ 182 lid_t next; /* 2: */
175 183
176 s8 maxcnt; /* 1: */ 184 s8 maxcnt; /* 1: */
177 s8 index; /* 1: */ 185 s8 index; /* 1: */
178 186
179 u16 flag; /* 2: */ 187 u16 flag; /* 2: */
180 u8 type; /* 1: */ 188 u8 type; /* 1: */
181 u8 l2linesize; /* 1: log2 of 189 u8 l2linesize; /* 1: log2 of linesize */
182 /* (8) */ 190 /* (8) */
183 191
184 struct lv header; /* 2: */ 192 struct lv header; /* 2: */
185 struct lv lwm; /* 2: low wate 193 struct lv lwm; /* 2: low water mark */
186 struct lv hwm; /* 2: high wat 194 struct lv hwm; /* 2: high water mark */
187 struct lv twm; /* 2: */ 195 struct lv twm; /* 2: */
188 /* (16) */ 196 /* (16) */
189 197
190 s32 pxdlock[8]; /* 32: */ 198 s32 pxdlock[8]; /* 32: */
191 }; /* (48) */ 199 }; /* (48) */
192 200
193 201
194 /* 202 /*
195 * maplock for txUpdateMap() 203 * maplock for txUpdateMap()
196 * 204 *
197 * note: maplock and its variations are overla 205 * note: maplock and its variations are overlaid
198 * at tlock.lock/linelock: watch for alignment 206 * at tlock.lock/linelock: watch for alignment;
199 * N.B. next field may be set by linelock, and 207 * N.B. next field may be set by linelock, and should not
200 * be modified by maplock; 208 * be modified by maplock;
201 * N.B. index of the first pxdlock specifies i !! 209 * N.B. index of the first pxdlock specifies index of next
202 * free maplock (i.e., number of maplock) in t !! 210 * free maplock (i.e., number of maplock) in the tlock;
203 */ 211 */
204 struct maplock { 212 struct maplock {
205 lid_t next; /* 2: */ 213 lid_t next; /* 2: */
206 214
207 u8 maxcnt; /* 2: */ 215 u8 maxcnt; /* 2: */
208 u8 index; /* 2: next fre 216 u8 index; /* 2: next free maplock index */
209 217
210 u16 flag; /* 2: */ 218 u16 flag; /* 2: */
211 u8 type; /* 1: */ 219 u8 type; /* 1: */
212 u8 count; /* 1: number o 220 u8 count; /* 1: number of pxd/xad */
213 /* (8) */ 221 /* (8) */
214 222
215 pxd_t pxd; /* 8: */ 223 pxd_t pxd; /* 8: */
216 }; /* (16): */ 224 }; /* (16): */
217 225
218 /* maplock flag */ 226 /* maplock flag */
219 #define mlckALLOC 0x00f0 227 #define mlckALLOC 0x00f0
220 #define mlckALLOCXADLIST 0x0080 228 #define mlckALLOCXADLIST 0x0080
221 #define mlckALLOCPXDLIST 0x0040 229 #define mlckALLOCPXDLIST 0x0040
222 #define mlckALLOCXAD 0x0020 230 #define mlckALLOCXAD 0x0020
223 #define mlckALLOCPXD 0x0010 231 #define mlckALLOCPXD 0x0010
224 #define mlckFREE 0x000f 232 #define mlckFREE 0x000f
225 #define mlckFREEXADLIST 0x0008 233 #define mlckFREEXADLIST 0x0008
226 #define mlckFREEPXDLIST 0x0004 234 #define mlckFREEPXDLIST 0x0004
227 #define mlckFREEXAD 0x0002 235 #define mlckFREEXAD 0x0002
228 #define mlckFREEPXD 0x0001 236 #define mlckFREEPXD 0x0001
229 237
230 #define pxd_lock maplock 238 #define pxd_lock maplock
231 239
232 struct xdlistlock { 240 struct xdlistlock {
233 lid_t next; /* 2: */ 241 lid_t next; /* 2: */
234 242
235 u8 maxcnt; /* 2: */ 243 u8 maxcnt; /* 2: */
236 u8 index; /* 2: */ 244 u8 index; /* 2: */
237 245
238 u16 flag; /* 2: */ 246 u16 flag; /* 2: */
239 u8 type; /* 1: */ 247 u8 type; /* 1: */
240 u8 count; /* 1: number o 248 u8 count; /* 1: number of pxd/xad */
241 /* (8) */ 249 /* (8) */
242 250
243 /* 251 /*
244 * We need xdlist to be 64 bits (8 byt 252 * We need xdlist to be 64 bits (8 bytes), regardless of
245 * whether void * is 32 or 64 bits 253 * whether void * is 32 or 64 bits
246 */ 254 */
247 union { 255 union {
248 void *_xdlist; /* pxd/xad lis 256 void *_xdlist; /* pxd/xad list */
249 s64 pad; /* 8: Force 64 257 s64 pad; /* 8: Force 64-bit xdlist size */
250 } union64; 258 } union64;
251 }; /* (16): */ 259 }; /* (16): */
252 260
253 #define xdlist union64._xdlist 261 #define xdlist union64._xdlist
254 262
255 /* 263 /*
256 * commit 264 * commit
257 * 265 *
258 * parameter to the commit manager routines 266 * parameter to the commit manager routines
259 */ 267 */
260 struct commit { 268 struct commit {
261 tid_t tid; /* tid = index 269 tid_t tid; /* tid = index of tblock */
262 int flag; /* flags */ 270 int flag; /* flags */
263 struct jfs_log *log; /* log */ 271 struct jfs_log *log; /* log */
264 struct super_block *sb; /* superblock 272 struct super_block *sb; /* superblock */
265 273
266 int nip; /* number of e 274 int nip; /* number of entries in iplist */
267 struct inode **iplist; /* list of poi 275 struct inode **iplist; /* list of pointers to inodes */
268 276
269 /* log record descriptor on 64-bit bou 277 /* log record descriptor on 64-bit boundary */
270 struct lrd lrd; /* : log recor 278 struct lrd lrd; /* : log record descriptor */
271 }; 279 };
272 280
273 /* 281 /*
274 * external declarations 282 * external declarations
275 */ 283 */
276 extern int jfs_tlocks_low; !! 284 extern struct tlock *txLock(tid_t tid, struct inode *ip, struct metapage *mp,
>> 285 int flag);
>> 286
>> 287 extern struct tlock *txMaplock(tid_t tid, struct inode *ip, int flag);
>> 288
>> 289 extern int txCommit(tid_t tid, int nip, struct inode **iplist, int flag);
>> 290
>> 291 extern tid_t txBegin(struct super_block *sb, int flag);
>> 292
>> 293 extern void txBeginAnon(struct super_block *sb);
>> 294
>> 295 extern void txEnd(tid_t tid);
>> 296
>> 297 extern void txAbort(tid_t tid, int dirty);
>> 298
>> 299 extern struct linelock *txLinelock(struct linelock * tlock);
>> 300
>> 301 extern void txFreeMap(struct inode *ip, struct maplock * maplock,
>> 302 struct tblock * tblk, int maptype);
>> 303
>> 304 extern void txEA(tid_t tid, struct inode *ip, dxd_t * oldea, dxd_t * newea);
>> 305
>> 306 extern void txFreelock(struct inode *ip);
>> 307
>> 308 extern int lmLog(struct jfs_log * log, struct tblock * tblk, struct lrd * lrd,
>> 309 struct tlock * tlck);
>> 310
>> 311 extern void txQuiesce(struct super_block *sb);
277 312
278 extern int txInit(void); !! 313 extern void txResume(struct super_block *sb);
279 extern void txExit(void); <<
280 extern struct tlock *txLock(tid_t, struct inod <<
281 extern struct tlock *txMaplock(tid_t, struct i <<
282 extern int txCommit(tid_t, int, struct inode * <<
283 extern tid_t txBegin(struct super_block *, int <<
284 extern void txBeginAnon(struct super_block *); <<
285 extern void txEnd(tid_t); <<
286 extern void txAbort(tid_t, int); <<
287 extern struct linelock *txLinelock(struct line <<
288 extern void txFreeMap(struct inode *, struct m <<
289 extern void txEA(tid_t, struct inode *, dxd_t <<
290 extern void txFreelock(struct inode *); <<
291 extern int lmLog(struct jfs_log *, struct tblo <<
292 struct tlock *); <<
293 extern void txQuiesce(struct super_block *); <<
294 extern void txResume(struct super_block *); <<
295 extern void txLazyUnlock(struct tblock *); <<
296 extern int jfs_lazycommit(void *); <<
297 extern int jfs_sync(void *); <<
298 #endif /* _H_JFS_TXNM 314 #endif /* _H_JFS_TXNMGR */
299 315
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.