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