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-rw-r--r--fs/gfs2/locking/dlm/Makefile2
-rw-r--r--fs/gfs2/locking/dlm/lock.c104
-rw-r--r--fs/gfs2/locking/dlm/lock_dlm.h191
-rw-r--r--fs/gfs2/locking/dlm/main.c34
-rw-r--r--fs/gfs2/locking/dlm/mount.c189
-rw-r--r--fs/gfs2/locking/dlm/plock.c297
-rw-r--r--fs/gfs2/locking/dlm/sysfs.c203
-rw-r--r--fs/gfs2/locking/dlm/thread.c65
-rw-r--r--fs/gfs2/locking/nolock/lock_nolock.mod.c44
-rw-r--r--fs/gfs2/locking/nolock/main.c113
-rw-r--r--include/linux/lock_dlm_plock.h40
11 files changed, 792 insertions, 490 deletions
diff --git a/fs/gfs2/locking/dlm/Makefile b/fs/gfs2/locking/dlm/Makefile
index d3bca02f7b3e..a9733ff80371 100644
--- a/fs/gfs2/locking/dlm/Makefile
+++ b/fs/gfs2/locking/dlm/Makefile
@@ -1,3 +1,3 @@
1obj-$(CONFIG_GFS2_FS) += lock_dlm.o 1obj-$(CONFIG_GFS2_FS) += lock_dlm.o
2lock_dlm-y := lock.o main.o mount.o sysfs.o thread.o 2lock_dlm-y := lock.o main.o mount.o sysfs.o thread.o plock.o
3 3
diff --git a/fs/gfs2/locking/dlm/lock.c b/fs/gfs2/locking/dlm/lock.c
index daf59d504e29..d799865b64a4 100644
--- a/fs/gfs2/locking/dlm/lock.c
+++ b/fs/gfs2/locking/dlm/lock.c
@@ -1,15 +1,11 @@
1/****************************************************************************** 1/*
2******************************************************************************* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3** 3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 *
5** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. 5 * This copyrighted material is made available to anyone wishing to use,
6** 6 * modify, copy, or redistribute it subject to the terms and conditions
7** This copyrighted material is made available to anyone wishing to use, 7 * of the GNU General Public License v.2.
8** modify, copy, or redistribute it subject to the terms and conditions 8 */
9** of the GNU General Public License v.2.
10**
11*******************************************************************************
12******************************************************************************/
13 9
14#include "lock_dlm.h" 10#include "lock_dlm.h"
15 11
@@ -38,7 +34,7 @@ static inline void gdlm_bast(void *astarg, int mode)
38 struct gdlm_ls *ls = lp->ls; 34 struct gdlm_ls *ls = lp->ls;
39 35
40 if (!mode) { 36 if (!mode) {
41 printk("lock_dlm: bast mode zero %x,%"PRIx64"\n", 37 printk("lock_dlm: bast mode zero %x,%llx\n",
42 lp->lockname.ln_type, lp->lockname.ln_number); 38 lp->lockname.ln_type, lp->lockname.ln_number);
43 return; 39 return;
44 } 40 }
@@ -75,9 +71,9 @@ static int16_t make_mode(int16_t lmstate)
75 return DLM_LOCK_CW; 71 return DLM_LOCK_CW;
76 case LM_ST_SHARED: 72 case LM_ST_SHARED:
77 return DLM_LOCK_PR; 73 return DLM_LOCK_PR;
78 default:
79 GDLM_ASSERT(0, printk("unknown LM state %d\n", lmstate););
80 } 74 }
75 gdlm_assert(0, "unknown LM state %d", lmstate);
76 return -1;
81} 77}
82 78
83/* convert dlm lock-mode to gfs lock-state */ 79/* convert dlm lock-mode to gfs lock-state */
@@ -94,9 +90,9 @@ int16_t gdlm_make_lmstate(int16_t dlmmode)
94 return LM_ST_DEFERRED; 90 return LM_ST_DEFERRED;
95 case DLM_LOCK_PR: 91 case DLM_LOCK_PR:
96 return LM_ST_SHARED; 92 return LM_ST_SHARED;
97 default:
98 GDLM_ASSERT(0, printk("unknown DLM mode %d\n", dlmmode););
99 } 93 }
94 gdlm_assert(0, "unknown DLM mode %d", dlmmode);
95 return -1;
100} 96}
101 97
102/* verify agreement with GFS on the current lock state, NB: DLM_LOCK_NL and 98/* verify agreement with GFS on the current lock state, NB: DLM_LOCK_NL and
@@ -106,7 +102,7 @@ static void check_cur_state(struct gdlm_lock *lp, unsigned int cur_state)
106{ 102{
107 int16_t cur = make_mode(cur_state); 103 int16_t cur = make_mode(cur_state);
108 if (lp->cur != DLM_LOCK_IV) 104 if (lp->cur != DLM_LOCK_IV)
109 GDLM_ASSERT(lp->cur == cur, printk("%d, %d\n", lp->cur, cur);); 105 gdlm_assert(lp->cur == cur, "%d, %d", lp->cur, cur);
110} 106}
111 107
112static inline unsigned int make_flags(struct gdlm_lock *lp, 108static inline unsigned int make_flags(struct gdlm_lock *lp,
@@ -157,7 +153,7 @@ static inline unsigned int make_flags(struct gdlm_lock *lp,
157static inline void make_strname(struct lm_lockname *lockname, 153static inline void make_strname(struct lm_lockname *lockname,
158 struct gdlm_strname *str) 154 struct gdlm_strname *str)
159{ 155{
160 sprintf(str->name, "%8x%16"PRIx64, lockname->ln_type, 156 sprintf(str->name, "%8x%16llx", lockname->ln_type,
161 lockname->ln_number); 157 lockname->ln_number);
162 str->namelen = GDLM_STRNAME_BYTES; 158 str->namelen = GDLM_STRNAME_BYTES;
163} 159}
@@ -167,11 +163,10 @@ int gdlm_create_lp(struct gdlm_ls *ls, struct lm_lockname *name,
167{ 163{
168 struct gdlm_lock *lp; 164 struct gdlm_lock *lp;
169 165
170 lp = kmalloc(sizeof(struct gdlm_lock), GFP_KERNEL); 166 lp = kzalloc(sizeof(struct gdlm_lock), GFP_KERNEL);
171 if (!lp) 167 if (!lp)
172 return -ENOMEM; 168 return -ENOMEM;
173 169
174 memset(lp, 0, sizeof(struct gdlm_lock));
175 lp->lockname = *name; 170 lp->lockname = *name;
176 lp->ls = ls; 171 lp->ls = ls;
177 lp->cur = DLM_LOCK_IV; 172 lp->cur = DLM_LOCK_IV;
@@ -202,7 +197,8 @@ void gdlm_delete_lp(struct gdlm_lock *lp)
202 list_del_init(&lp->blist); 197 list_del_init(&lp->blist);
203 if (!list_empty(&lp->delay_list)) 198 if (!list_empty(&lp->delay_list))
204 list_del_init(&lp->delay_list); 199 list_del_init(&lp->delay_list);
205 GDLM_ASSERT(!list_empty(&lp->all_list),); 200 gdlm_assert(!list_empty(&lp->all_list),
201 "%x,%llx", lp->lockname.ln_type, lp->lockname.ln_number);
206 list_del_init(&lp->all_list); 202 list_del_init(&lp->all_list);
207 ls->all_locks_count--; 203 ls->all_locks_count--;
208 spin_unlock(&ls->async_lock); 204 spin_unlock(&ls->async_lock);
@@ -227,7 +223,7 @@ void gdlm_put_lock(lm_lock_t *lock)
227 gdlm_delete_lp((struct gdlm_lock *) lock); 223 gdlm_delete_lp((struct gdlm_lock *) lock);
228} 224}
229 225
230void gdlm_do_lock(struct gdlm_lock *lp, struct dlm_range *range) 226unsigned int gdlm_do_lock(struct gdlm_lock *lp, struct dlm_range *range)
231{ 227{
232 struct gdlm_ls *ls = lp->ls; 228 struct gdlm_ls *ls = lp->ls;
233 struct gdlm_strname str; 229 struct gdlm_strname str;
@@ -242,7 +238,7 @@ void gdlm_do_lock(struct gdlm_lock *lp, struct dlm_range *range)
242 if (test_bit(DFL_BLOCK_LOCKS, &ls->flags) && 238 if (test_bit(DFL_BLOCK_LOCKS, &ls->flags) &&
243 !test_bit(LFL_NOBLOCK, &lp->flags) && lp->req != DLM_LOCK_NL) { 239 !test_bit(LFL_NOBLOCK, &lp->flags) && lp->req != DLM_LOCK_NL) {
244 gdlm_queue_delayed(lp); 240 gdlm_queue_delayed(lp);
245 return; 241 return LM_OUT_ASYNC;
246 } 242 }
247 243
248 /* 244 /*
@@ -256,7 +252,7 @@ void gdlm_do_lock(struct gdlm_lock *lp, struct dlm_range *range)
256 252
257 set_bit(LFL_ACTIVE, &lp->flags); 253 set_bit(LFL_ACTIVE, &lp->flags);
258 254
259 log_debug("lk %x,%"PRIx64" id %x %d,%d %x", lp->lockname.ln_type, 255 log_debug("lk %x,%llx id %x %d,%d %x", lp->lockname.ln_type,
260 lp->lockname.ln_number, lp->lksb.sb_lkid, 256 lp->lockname.ln_number, lp->lksb.sb_lkid,
261 lp->cur, lp->req, lp->lkf); 257 lp->cur, lp->req, lp->lkf);
262 258
@@ -270,15 +266,19 @@ void gdlm_do_lock(struct gdlm_lock *lp, struct dlm_range *range)
270 error = 0; 266 error = 0;
271 } 267 }
272 268
273 GDLM_ASSERT(!error, 269 if (error) {
274 printk("%s: num=%x,%"PRIx64" err=%d cur=%d req=%d lkf=%x\n", 270 log_debug("%s: gdlm_lock %x,%llx err=%d cur=%d req=%d lkf=%x "
275 ls->fsname, lp->lockname.ln_type, 271 "flags=%lx", ls->fsname, lp->lockname.ln_type,
276 lp->lockname.ln_number, error, lp->cur, lp->req, 272 lp->lockname.ln_number, error, lp->cur, lp->req,
277 lp->lkf);); 273 lp->lkf, lp->flags);
274 return LM_OUT_ERROR;
275 }
276 return LM_OUT_ASYNC;
278} 277}
279 278
280void gdlm_do_unlock(struct gdlm_lock *lp) 279unsigned int gdlm_do_unlock(struct gdlm_lock *lp)
281{ 280{
281 struct gdlm_ls *ls = lp->ls;
282 unsigned int lkf = 0; 282 unsigned int lkf = 0;
283 int error; 283 int error;
284 284
@@ -288,16 +288,19 @@ void gdlm_do_unlock(struct gdlm_lock *lp)
288 if (lp->lvb) 288 if (lp->lvb)
289 lkf = DLM_LKF_VALBLK; 289 lkf = DLM_LKF_VALBLK;
290 290
291 log_debug("un %x,%"PRIx64" %x %d %x", lp->lockname.ln_type, 291 log_debug("un %x,%llx %x %d %x", lp->lockname.ln_type,
292 lp->lockname.ln_number, lp->lksb.sb_lkid, lp->cur, lkf); 292 lp->lockname.ln_number, lp->lksb.sb_lkid, lp->cur, lkf);
293 293
294 error = dlm_unlock(lp->ls->dlm_lockspace, lp->lksb.sb_lkid, lkf, 294 error = dlm_unlock(ls->dlm_lockspace, lp->lksb.sb_lkid, lkf, NULL, lp);
295 NULL, lp);
296 295
297 GDLM_ASSERT(!error, 296 if (error) {
298 printk("%s: error=%d num=%x,%"PRIx64" lkf=%x flags=%lx\n", 297 log_debug("%s: gdlm_unlock %x,%llx err=%d cur=%d req=%d lkf=%x "
299 lp->ls->fsname, error, lp->lockname.ln_type, 298 "flags=%lx", ls->fsname, lp->lockname.ln_type,
300 lp->lockname.ln_number, lkf, lp->flags);); 299 lp->lockname.ln_number, error, lp->cur, lp->req,
300 lp->lkf, lp->flags);
301 return LM_OUT_ERROR;
302 }
303 return LM_OUT_ASYNC;
301} 304}
302 305
303unsigned int gdlm_lock(lm_lock_t *lock, unsigned int cur_state, 306unsigned int gdlm_lock(lm_lock_t *lock, unsigned int cur_state,
@@ -313,8 +316,7 @@ unsigned int gdlm_lock(lm_lock_t *lock, unsigned int cur_state,
313 lp->req = make_mode(req_state); 316 lp->req = make_mode(req_state);
314 lp->lkf = make_flags(lp, flags, lp->cur, lp->req); 317 lp->lkf = make_flags(lp, flags, lp->cur, lp->req);
315 318
316 gdlm_do_lock(lp, NULL); 319 return gdlm_do_lock(lp, NULL);
317 return LM_OUT_ASYNC;
318} 320}
319 321
320unsigned int gdlm_unlock(lm_lock_t *lock, unsigned int cur_state) 322unsigned int gdlm_unlock(lm_lock_t *lock, unsigned int cur_state)
@@ -324,8 +326,7 @@ unsigned int gdlm_unlock(lm_lock_t *lock, unsigned int cur_state)
324 clear_bit(LFL_DLM_CANCEL, &lp->flags); 326 clear_bit(LFL_DLM_CANCEL, &lp->flags);
325 if (lp->cur == DLM_LOCK_IV) 327 if (lp->cur == DLM_LOCK_IV)
326 return 0; 328 return 0;
327 gdlm_do_unlock(lp); 329 return gdlm_do_unlock(lp);
328 return LM_OUT_ASYNC;
329} 330}
330 331
331void gdlm_cancel(lm_lock_t *lock) 332void gdlm_cancel(lm_lock_t *lock)
@@ -337,8 +338,8 @@ void gdlm_cancel(lm_lock_t *lock)
337 if (test_bit(LFL_DLM_CANCEL, &lp->flags)) 338 if (test_bit(LFL_DLM_CANCEL, &lp->flags))
338 return; 339 return;
339 340
340 log_all("gdlm_cancel %x,%"PRIx64" flags %lx", 341 log_info("gdlm_cancel %x,%llx flags %lx",
341 lp->lockname.ln_type, lp->lockname.ln_number, lp->flags); 342 lp->lockname.ln_type, lp->lockname.ln_number, lp->flags);
342 343
343 spin_lock(&ls->async_lock); 344 spin_lock(&ls->async_lock);
344 if (!list_empty(&lp->delay_list)) { 345 if (!list_empty(&lp->delay_list)) {
@@ -356,9 +357,9 @@ void gdlm_cancel(lm_lock_t *lock)
356 357
357 if (!test_bit(LFL_ACTIVE, &lp->flags) || 358 if (!test_bit(LFL_ACTIVE, &lp->flags) ||
358 test_bit(LFL_DLM_UNLOCK, &lp->flags)) { 359 test_bit(LFL_DLM_UNLOCK, &lp->flags)) {
359 log_all("gdlm_cancel skip %x,%"PRIx64" flags %lx", 360 log_info("gdlm_cancel skip %x,%llx flags %lx",
360 lp->lockname.ln_type, lp->lockname.ln_number, 361 lp->lockname.ln_type, lp->lockname.ln_number,
361 lp->flags); 362 lp->flags);
362 return; 363 return;
363 } 364 }
364 365
@@ -370,8 +371,8 @@ void gdlm_cancel(lm_lock_t *lock)
370 error = dlm_unlock(ls->dlm_lockspace, lp->lksb.sb_lkid, DLM_LKF_CANCEL, 371 error = dlm_unlock(ls->dlm_lockspace, lp->lksb.sb_lkid, DLM_LKF_CANCEL,
371 NULL, lp); 372 NULL, lp);
372 373
373 log_all("gdlm_cancel rv %d %x,%"PRIx64" flags %lx", error, 374 log_info("gdlm_cancel rv %d %x,%llx flags %lx", error,
374 lp->lockname.ln_type, lp->lockname.ln_number, lp->flags); 375 lp->lockname.ln_type, lp->lockname.ln_number, lp->flags);
375 376
376 if (error == -EBUSY) 377 if (error == -EBUSY)
377 clear_bit(LFL_DLM_CANCEL, &lp->flags); 378 clear_bit(LFL_DLM_CANCEL, &lp->flags);
@@ -381,12 +382,10 @@ int gdlm_add_lvb(struct gdlm_lock *lp)
381{ 382{
382 char *lvb; 383 char *lvb;
383 384
384 lvb = kmalloc(GDLM_LVB_SIZE, GFP_KERNEL); 385 lvb = kzalloc(GDLM_LVB_SIZE, GFP_KERNEL);
385 if (!lvb) 386 if (!lvb)
386 return -ENOMEM; 387 return -ENOMEM;
387 388
388 memset(lvb, 0, GDLM_LVB_SIZE);
389
390 lp->lksb.sb_lvbptr = lvb; 389 lp->lksb.sb_lvbptr = lvb;
391 lp->lvb = lvb; 390 lp->lvb = lvb;
392 return 0; 391 return 0;
@@ -448,7 +447,8 @@ static void unhold_null_lock(struct gdlm_lock *lp)
448{ 447{
449 struct gdlm_lock *lpn = lp->hold_null; 448 struct gdlm_lock *lpn = lp->hold_null;
450 449
451 GDLM_ASSERT(lpn,); 450 gdlm_assert(lpn, "%x,%llx",
451 lp->lockname.ln_type, lp->lockname.ln_number);
452 lpn->lksb.sb_lvbptr = NULL; 452 lpn->lksb.sb_lvbptr = NULL;
453 lpn->lvb = NULL; 453 lpn->lvb = NULL;
454 set_bit(LFL_UNLOCK_DELETE, &lpn->flags); 454 set_bit(LFL_UNLOCK_DELETE, &lpn->flags);
diff --git a/fs/gfs2/locking/dlm/lock_dlm.h b/fs/gfs2/locking/dlm/lock_dlm.h
new file mode 100644
index 000000000000..fa545f7872e8
--- /dev/null
+++ b/fs/gfs2/locking/dlm/lock_dlm.h
@@ -0,0 +1,191 @@
1/*
2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4 *
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License v.2.
8 */
9
10#ifndef LOCK_DLM_DOT_H
11#define LOCK_DLM_DOT_H
12
13#include <linux/module.h>
14#include <linux/slab.h>
15#include <linux/spinlock.h>
16#include <linux/module.h>
17#include <linux/types.h>
18#include <linux/string.h>
19#include <linux/list.h>
20#include <linux/socket.h>
21#include <linux/delay.h>
22#include <linux/kthread.h>
23#include <linux/kobject.h>
24#include <linux/fcntl.h>
25#include <linux/wait.h>
26#include <net/sock.h>
27
28#include <linux/dlm.h>
29#include "../../lm_interface.h"
30
31/*
32 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
33 * prefix of lock_dlm_ gets awkward. Externally, GFS refers to this module
34 * as "lock_dlm".
35 */
36
37#define GDLM_STRNAME_BYTES 24
38#define GDLM_LVB_SIZE 32
39#define GDLM_DROP_COUNT 50000
40#define GDLM_DROP_PERIOD 60
41#define GDLM_NAME_LEN 128
42
43/* GFS uses 12 bytes to identify a resource (32 bit type + 64 bit number).
44 We sprintf these numbers into a 24 byte string of hex values to make them
45 human-readable (to make debugging simpler.) */
46
47struct gdlm_strname {
48 unsigned char name[GDLM_STRNAME_BYTES];
49 unsigned short namelen;
50};
51
52enum {
53 DFL_BLOCK_LOCKS = 0,
54 DFL_SPECTATOR = 1,
55 DFL_WITHDRAW = 2,
56};
57
58struct gdlm_ls {
59 uint32_t id;
60 int jid;
61 int first;
62 int first_done;
63 unsigned long flags;
64 struct kobject kobj;
65 char clustername[GDLM_NAME_LEN];
66 char fsname[GDLM_NAME_LEN];
67 int fsflags;
68 dlm_lockspace_t *dlm_lockspace;
69 lm_callback_t fscb;
70 lm_fsdata_t *fsdata;
71 int recover_jid;
72 int recover_jid_done;
73 spinlock_t async_lock;
74 struct list_head complete;
75 struct list_head blocking;
76 struct list_head delayed;
77 struct list_head submit;
78 struct list_head all_locks;
79 uint32_t all_locks_count;
80 wait_queue_head_t wait_control;
81 struct task_struct *thread1;
82 struct task_struct *thread2;
83 wait_queue_head_t thread_wait;
84 unsigned long drop_time;
85 int drop_locks_count;
86 int drop_locks_period;
87};
88
89enum {
90 LFL_NOBLOCK = 0,
91 LFL_NOCACHE = 1,
92 LFL_DLM_UNLOCK = 2,
93 LFL_DLM_CANCEL = 3,
94 LFL_SYNC_LVB = 4,
95 LFL_FORCE_PROMOTE = 5,
96 LFL_REREQUEST = 6,
97 LFL_ACTIVE = 7,
98 LFL_INLOCK = 8,
99 LFL_CANCEL = 9,
100 LFL_NOBAST = 10,
101 LFL_HEADQUE = 11,
102 LFL_UNLOCK_DELETE = 12,
103};
104
105struct gdlm_lock {
106 struct gdlm_ls *ls;
107 struct lm_lockname lockname;
108 char *lvb;
109 struct dlm_lksb lksb;
110
111 int16_t cur;
112 int16_t req;
113 int16_t prev_req;
114 uint32_t lkf; /* dlm flags DLM_LKF_ */
115 unsigned long flags; /* lock_dlm flags LFL_ */
116
117 int bast_mode; /* protected by async_lock */
118 struct completion ast_wait;
119
120 struct list_head clist; /* complete */
121 struct list_head blist; /* blocking */
122 struct list_head delay_list; /* delayed */
123 struct list_head all_list; /* all locks for the fs */
124 struct gdlm_lock *hold_null; /* NL lock for hold_lvb */
125};
126
127#define gdlm_assert(assertion, fmt, args...) \
128do { \
129 if (unlikely(!(assertion))) { \
130 printk(KERN_EMERG "lock_dlm: fatal assertion failed \"%s\"\n" \
131 "lock_dlm: " fmt "\n", \
132 #assertion, ##args); \
133 BUG(); \
134 } \
135} while (0)
136
137#define log_print(lev, fmt, arg...) printk(lev "lock_dlm: " fmt "\n" , ## arg)
138#define log_info(fmt, arg...) log_print(KERN_INFO , fmt , ## arg)
139#define log_error(fmt, arg...) log_print(KERN_ERR , fmt , ## arg)
140#ifdef LOCK_DLM_LOG_DEBUG
141#define log_debug(fmt, arg...) log_print(KERN_DEBUG , fmt , ## arg)
142#else
143#define log_debug(fmt, arg...)
144#endif
145
146/* sysfs.c */
147
148int gdlm_sysfs_init(void);
149void gdlm_sysfs_exit(void);
150int gdlm_kobject_setup(struct gdlm_ls *, struct kobject *);
151void gdlm_kobject_release(struct gdlm_ls *);
152
153/* thread.c */
154
155int gdlm_init_threads(struct gdlm_ls *);
156void gdlm_release_threads(struct gdlm_ls *);
157
158/* lock.c */
159
160int16_t gdlm_make_lmstate(int16_t);
161void gdlm_queue_delayed(struct gdlm_lock *);
162void gdlm_submit_delayed(struct gdlm_ls *);
163int gdlm_release_all_locks(struct gdlm_ls *);
164int gdlm_create_lp(struct gdlm_ls *, struct lm_lockname *, struct gdlm_lock **);
165void gdlm_delete_lp(struct gdlm_lock *);
166int gdlm_add_lvb(struct gdlm_lock *);
167void gdlm_del_lvb(struct gdlm_lock *);
168unsigned int gdlm_do_lock(struct gdlm_lock *, struct dlm_range *);
169unsigned int gdlm_do_unlock(struct gdlm_lock *);
170
171int gdlm_get_lock(lm_lockspace_t *, struct lm_lockname *, lm_lock_t **);
172void gdlm_put_lock(lm_lock_t *);
173unsigned int gdlm_lock(lm_lock_t *, unsigned int, unsigned int, unsigned int);
174unsigned int gdlm_unlock(lm_lock_t *, unsigned int);
175void gdlm_cancel(lm_lock_t *);
176int gdlm_hold_lvb(lm_lock_t *, char **);
177void gdlm_unhold_lvb(lm_lock_t *, char *);
178void gdlm_sync_lvb(lm_lock_t *, char *);
179
180/* plock.c */
181
182int gdlm_plock_init(void);
183void gdlm_plock_exit(void);
184int gdlm_plock(lm_lockspace_t *, struct lm_lockname *, struct file *, int,
185 struct file_lock *);
186int gdlm_plock_get(lm_lockspace_t *, struct lm_lockname *, struct file *,
187 struct file_lock *);
188int gdlm_punlock(lm_lockspace_t *, struct lm_lockname *, struct file *,
189 struct file_lock *);
190#endif
191
diff --git a/fs/gfs2/locking/dlm/main.c b/fs/gfs2/locking/dlm/main.c
index 3ced92ef1b19..2c13c916a352 100644
--- a/fs/gfs2/locking/dlm/main.c
+++ b/fs/gfs2/locking/dlm/main.c
@@ -1,15 +1,11 @@
1/****************************************************************************** 1/*
2******************************************************************************* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3** 3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 *
5** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. 5 * This copyrighted material is made available to anyone wishing to use,
6** 6 * modify, copy, or redistribute it subject to the terms and conditions
7** This copyrighted material is made available to anyone wishing to use, 7 * of the GNU General Public License v.2.
8** modify, copy, or redistribute it subject to the terms and conditions 8 */
9** of the GNU General Public License v.2.
10**
11*******************************************************************************
12******************************************************************************/
13 9
14#include <linux/init.h> 10#include <linux/init.h>
15 11
@@ -24,7 +20,7 @@ int __init init_lock_dlm(void)
24{ 20{
25 int error; 21 int error;
26 22
27 error = lm_register_proto(&gdlm_ops); 23 error = gfs_register_lockproto(&gdlm_ops);
28 if (error) { 24 if (error) {
29 printk("lock_dlm: can't register protocol: %d\n", error); 25 printk("lock_dlm: can't register protocol: %d\n", error);
30 return error; 26 return error;
@@ -32,7 +28,14 @@ int __init init_lock_dlm(void)
32 28
33 error = gdlm_sysfs_init(); 29 error = gdlm_sysfs_init();
34 if (error) { 30 if (error) {
35 lm_unregister_proto(&gdlm_ops); 31 gfs_unregister_lockproto(&gdlm_ops);
32 return error;
33 }
34
35 error = gdlm_plock_init();
36 if (error) {
37 gdlm_sysfs_exit();
38 gfs_unregister_lockproto(&gdlm_ops);
36 return error; 39 return error;
37 } 40 }
38 41
@@ -45,8 +48,9 @@ int __init init_lock_dlm(void)
45 48
46void __exit exit_lock_dlm(void) 49void __exit exit_lock_dlm(void)
47{ 50{
48 lm_unregister_proto(&gdlm_ops); 51 gdlm_plock_exit();
49 gdlm_sysfs_exit(); 52 gdlm_sysfs_exit();
53 gfs_unregister_lockproto(&gdlm_ops);
50} 54}
51 55
52module_init(init_lock_dlm); 56module_init(init_lock_dlm);
diff --git a/fs/gfs2/locking/dlm/mount.c b/fs/gfs2/locking/dlm/mount.c
index 92b1789deb89..bfb224638f2d 100644
--- a/fs/gfs2/locking/dlm/mount.c
+++ b/fs/gfs2/locking/dlm/mount.c
@@ -1,15 +1,11 @@
1/****************************************************************************** 1/*
2******************************************************************************* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3** 3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 *
5** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. 5 * This copyrighted material is made available to anyone wishing to use,
6** 6 * modify, copy, or redistribute it subject to the terms and conditions
7** This copyrighted material is made available to anyone wishing to use, 7 * of the GNU General Public License v.2.
8** modify, copy, or redistribute it subject to the terms and conditions 8 */
9** of the GNU General Public License v.2.
10**
11*******************************************************************************
12******************************************************************************/
13 9
14#include "lock_dlm.h" 10#include "lock_dlm.h"
15 11
@@ -24,27 +20,21 @@ static struct gdlm_ls *init_gdlm(lm_callback_t cb, lm_fsdata_t *fsdata,
24 struct gdlm_ls *ls; 20 struct gdlm_ls *ls;
25 char buf[256], *p; 21 char buf[256], *p;
26 22
27 ls = kmalloc(sizeof(struct gdlm_ls), GFP_KERNEL); 23 ls = kzalloc(sizeof(struct gdlm_ls), GFP_KERNEL);
28 if (!ls) 24 if (!ls)
29 return NULL; 25 return NULL;
30 26
31 memset(ls, 0, sizeof(struct gdlm_ls));
32
33 ls->drop_locks_count = gdlm_drop_count; 27 ls->drop_locks_count = gdlm_drop_count;
34 ls->drop_locks_period = gdlm_drop_period; 28 ls->drop_locks_period = gdlm_drop_period;
35
36 ls->fscb = cb; 29 ls->fscb = cb;
37 ls->fsdata = fsdata; 30 ls->fsdata = fsdata;
38 ls->fsflags = flags; 31 ls->fsflags = flags;
39
40 spin_lock_init(&ls->async_lock); 32 spin_lock_init(&ls->async_lock);
41
42 INIT_LIST_HEAD(&ls->complete); 33 INIT_LIST_HEAD(&ls->complete);
43 INIT_LIST_HEAD(&ls->blocking); 34 INIT_LIST_HEAD(&ls->blocking);
44 INIT_LIST_HEAD(&ls->delayed); 35 INIT_LIST_HEAD(&ls->delayed);
45 INIT_LIST_HEAD(&ls->submit); 36 INIT_LIST_HEAD(&ls->submit);
46 INIT_LIST_HEAD(&ls->all_locks); 37 INIT_LIST_HEAD(&ls->all_locks);
47
48 init_waitqueue_head(&ls->thread_wait); 38 init_waitqueue_head(&ls->thread_wait);
49 init_waitqueue_head(&ls->wait_control); 39 init_waitqueue_head(&ls->wait_control);
50 ls->thread1 = NULL; 40 ls->thread1 = NULL;
@@ -57,23 +47,75 @@ static struct gdlm_ls *init_gdlm(lm_callback_t cb, lm_fsdata_t *fsdata,
57 47
58 p = strstr(buf, ":"); 48 p = strstr(buf, ":");
59 if (!p) { 49 if (!p) {
60 printk("lock_dlm: invalid table_name \"%s\"\n", table_name); 50 log_info("invalid table_name \"%s\"", table_name);
61 kfree(ls); 51 kfree(ls);
62 return NULL; 52 return NULL;
63 } 53 }
64 *p = '\0'; 54 *p = '\0';
65 p++; 55 p++;
66 56
67 strncpy(ls->clustername, buf, 128); 57 strncpy(ls->clustername, buf, GDLM_NAME_LEN);
68 strncpy(ls->fsname, p, 128); 58 strncpy(ls->fsname, p, GDLM_NAME_LEN);
69 59
70 return ls; 60 return ls;
71} 61}
72 62
63static int make_args(struct gdlm_ls *ls, char *data_arg)
64{
65 char data[256];
66 char *options, *x, *y;
67 int error = 0;
68
69 memset(data, 0, 256);
70 strncpy(data, data_arg, 255);
71
72 for (options = data; (x = strsep(&options, ":")); ) {
73 if (!*x)
74 continue;
75
76 y = strchr(x, '=');
77 if (y)
78 *y++ = 0;
79
80 if (!strcmp(x, "jid")) {
81 if (!y) {
82 log_error("need argument to jid");
83 error = -EINVAL;
84 break;
85 }
86 sscanf(y, "%u", &ls->jid);
87
88 } else if (!strcmp(x, "first")) {
89 if (!y) {
90 log_error("need argument to first");
91 error = -EINVAL;
92 break;
93 }
94 sscanf(y, "%u", &ls->first);
95
96 } else if (!strcmp(x, "id")) {
97 if (!y) {
98 log_error("need argument to id");
99 error = -EINVAL;
100 break;
101 }
102 sscanf(y, "%u", &ls->id);
103
104 } else {
105 log_error("unkonwn option: %s", x);
106 error = -EINVAL;
107 break;
108 }
109 }
110
111 return error;
112}
113
73static int gdlm_mount(char *table_name, char *host_data, 114static int gdlm_mount(char *table_name, char *host_data,
74 lm_callback_t cb, lm_fsdata_t *fsdata, 115 lm_callback_t cb, lm_fsdata_t *fsdata,
75 unsigned int min_lvb_size, int flags, 116 unsigned int min_lvb_size, int flags,
76 struct lm_lockstruct *lockstruct) 117 struct lm_lockstruct *lockstruct,
118 struct kobject *fskobj)
77{ 119{
78 struct gdlm_ls *ls; 120 struct gdlm_ls *ls;
79 int error = -ENOMEM; 121 int error = -ENOMEM;
@@ -92,30 +134,18 @@ static int gdlm_mount(char *table_name, char *host_data,
92 error = dlm_new_lockspace(ls->fsname, strlen(ls->fsname), 134 error = dlm_new_lockspace(ls->fsname, strlen(ls->fsname),
93 &ls->dlm_lockspace, 0, GDLM_LVB_SIZE); 135 &ls->dlm_lockspace, 0, GDLM_LVB_SIZE);
94 if (error) { 136 if (error) {
95 printk("lock_dlm: dlm_new_lockspace error %d\n", error); 137 log_error("dlm_new_lockspace error %d", error);
96 goto out_thread; 138 goto out_thread;
97 } 139 }
98 140
99 error = gdlm_kobject_setup(ls); 141 error = gdlm_kobject_setup(ls, fskobj);
100 if (error) 142 if (error)
101 goto out_dlm; 143 goto out_dlm;
102 kobject_uevent(&ls->kobj, KOBJ_MOUNT, NULL);
103 144
104 /* Now we depend on userspace to notice the new mount, 145 error = make_args(ls, host_data);
105 join the appropriate group, and do a write to our sysfs
106 "mounted" or "terminate" file. Before the start, userspace
107 must set "jid" and "first". */
108
109 error = wait_event_interruptible(ls->wait_control,
110 test_bit(DFL_JOIN_DONE, &ls->flags));
111 if (error) 146 if (error)
112 goto out_sysfs; 147 goto out_sysfs;
113 148
114 if (test_bit(DFL_TERMINATE, &ls->flags)) {
115 error = -ERESTARTSYS;
116 goto out_sysfs;
117 }
118
119 lockstruct->ls_jid = ls->jid; 149 lockstruct->ls_jid = ls->jid;
120 lockstruct->ls_first = ls->first; 150 lockstruct->ls_first = ls->first;
121 lockstruct->ls_lockspace = ls; 151 lockstruct->ls_lockspace = ls;
@@ -143,22 +173,19 @@ static void gdlm_unmount(lm_lockspace_t *lockspace)
143 173
144 log_debug("unmount flags %lx", ls->flags); 174 log_debug("unmount flags %lx", ls->flags);
145 175
146 if (test_bit(DFL_WITHDRAW, &ls->flags)) { 176 /* FIXME: serialize unmount and withdraw in case they
147 gdlm_kobject_release(ls); 177 happen at once. Also, if unmount follows withdraw,
148 goto out; 178 wait for withdraw to finish. */
149 }
150
151 kobject_uevent(&ls->kobj, KOBJ_UMOUNT, NULL);
152 179
153 wait_event_interruptible(ls->wait_control, 180 if (test_bit(DFL_WITHDRAW, &ls->flags))
154 test_bit(DFL_LEAVE_DONE, &ls->flags)); 181 goto out;
155 182
156 gdlm_kobject_release(ls); 183 gdlm_kobject_release(ls);
157 dlm_release_lockspace(ls->dlm_lockspace, 2); 184 dlm_release_lockspace(ls->dlm_lockspace, 2);
158 gdlm_release_threads(ls); 185 gdlm_release_threads(ls);
159 rv = gdlm_release_all_locks(ls); 186 rv = gdlm_release_all_locks(ls);
160 if (rv) 187 if (rv)
161 log_all("lm_dlm_unmount: %d stray locks freed", rv); 188 log_info("gdlm_unmount: %d stray locks freed", rv);
162 out: 189 out:
163 kfree(ls); 190 kfree(ls);
164} 191}
@@ -167,7 +194,7 @@ static void gdlm_recovery_done(lm_lockspace_t *lockspace, unsigned int jid,
167 unsigned int message) 194 unsigned int message)
168{ 195{
169 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace; 196 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace;
170 ls->recover_done = jid; 197 ls->recover_jid_done = jid;
171 kobject_uevent(&ls->kobj, KOBJ_CHANGE, NULL); 198 kobject_uevent(&ls->kobj, KOBJ_CHANGE, NULL);
172} 199}
173 200
@@ -178,12 +205,14 @@ static void gdlm_others_may_mount(lm_lockspace_t *lockspace)
178 kobject_uevent(&ls->kobj, KOBJ_CHANGE, NULL); 205 kobject_uevent(&ls->kobj, KOBJ_CHANGE, NULL);
179} 206}
180 207
208/* Userspace gets the offline uevent, blocks new gfs locks on
209 other mounters, and lets us know (sets WITHDRAW flag). Then,
210 userspace leaves the mount group while we leave the lockspace. */
211
181static void gdlm_withdraw(lm_lockspace_t *lockspace) 212static void gdlm_withdraw(lm_lockspace_t *lockspace)
182{ 213{
183 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace; 214 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace;
184 215
185 /* userspace suspends locking on all other members */
186
187 kobject_uevent(&ls->kobj, KOBJ_OFFLINE, NULL); 216 kobject_uevent(&ls->kobj, KOBJ_OFFLINE, NULL);
188 217
189 wait_event_interruptible(ls->wait_control, 218 wait_event_interruptible(ls->wait_control,
@@ -192,49 +221,27 @@ static void gdlm_withdraw(lm_lockspace_t *lockspace)
192 dlm_release_lockspace(ls->dlm_lockspace, 2); 221 dlm_release_lockspace(ls->dlm_lockspace, 2);
193 gdlm_release_threads(ls); 222 gdlm_release_threads(ls);
194 gdlm_release_all_locks(ls); 223 gdlm_release_all_locks(ls);
195 224 gdlm_kobject_release(ls);
196 kobject_uevent(&ls->kobj, KOBJ_UMOUNT, NULL);
197
198 /* userspace leaves the mount group, we don't need to wait for
199 that to complete */
200}
201
202int gdlm_plock_get(lm_lockspace_t *lockspace, struct lm_lockname *name,
203 struct file *file, struct file_lock *fl)
204{
205 return -ENOSYS;
206}
207
208int gdlm_punlock(lm_lockspace_t *lockspace, struct lm_lockname *name,
209 struct file *file, struct file_lock *fl)
210{
211 return -ENOSYS;
212}
213
214int gdlm_plock(lm_lockspace_t *lockspace, struct lm_lockname *name,
215 struct file *file, int cmd, struct file_lock *fl)
216{
217 return -ENOSYS;
218} 225}
219 226
220struct lm_lockops gdlm_ops = { 227struct lm_lockops gdlm_ops = {
221 lm_proto_name:"lock_dlm", 228 .lm_proto_name = "lock_dlm",
222 lm_mount:gdlm_mount, 229 .lm_mount = gdlm_mount,
223 lm_others_may_mount:gdlm_others_may_mount, 230 .lm_others_may_mount = gdlm_others_may_mount,
224 lm_unmount:gdlm_unmount, 231 .lm_unmount = gdlm_unmount,
225 lm_withdraw:gdlm_withdraw, 232 .lm_withdraw = gdlm_withdraw,
226 lm_get_lock:gdlm_get_lock, 233 .lm_get_lock = gdlm_get_lock,
227 lm_put_lock:gdlm_put_lock, 234 .lm_put_lock = gdlm_put_lock,
228 lm_lock:gdlm_lock, 235 .lm_lock = gdlm_lock,
229 lm_unlock:gdlm_unlock, 236 .lm_unlock = gdlm_unlock,
230 lm_plock:gdlm_plock, 237 .lm_plock = gdlm_plock,
231 lm_punlock:gdlm_punlock, 238 .lm_punlock = gdlm_punlock,
232 lm_plock_get:gdlm_plock_get, 239 .lm_plock_get = gdlm_plock_get,
233 lm_cancel:gdlm_cancel, 240 .lm_cancel = gdlm_cancel,
234 lm_hold_lvb:gdlm_hold_lvb, 241 .lm_hold_lvb = gdlm_hold_lvb,
235 lm_unhold_lvb:gdlm_unhold_lvb, 242 .lm_unhold_lvb = gdlm_unhold_lvb,
236 lm_sync_lvb:gdlm_sync_lvb, 243 .lm_sync_lvb = gdlm_sync_lvb,
237 lm_recovery_done:gdlm_recovery_done, 244 .lm_recovery_done = gdlm_recovery_done,
238 lm_owner:THIS_MODULE, 245 .lm_owner = THIS_MODULE,
239}; 246};
240 247
diff --git a/fs/gfs2/locking/dlm/plock.c b/fs/gfs2/locking/dlm/plock.c
new file mode 100644
index 000000000000..382847205bc1
--- /dev/null
+++ b/fs/gfs2/locking/dlm/plock.c
@@ -0,0 +1,297 @@
1/*
2 * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
3 *
4 * This copyrighted material is made available to anyone wishing to use,
5 * modify, copy, or redistribute it subject to the terms and conditions
6 * of the GNU General Public License v.2.
7 */
8
9#include <linux/miscdevice.h>
10#include <linux/lock_dlm_plock.h>
11
12#include "lock_dlm.h"
13
14
15static spinlock_t ops_lock;
16static struct list_head send_list;
17static struct list_head recv_list;
18static wait_queue_head_t send_wq;
19static wait_queue_head_t recv_wq;
20
21struct plock_op {
22 struct list_head list;
23 int done;
24 struct gdlm_plock_info info;
25};
26
27static inline void set_version(struct gdlm_plock_info *info)
28{
29 info->version[0] = GDLM_PLOCK_VERSION_MAJOR;
30 info->version[1] = GDLM_PLOCK_VERSION_MINOR;
31 info->version[2] = GDLM_PLOCK_VERSION_PATCH;
32}
33
34static int check_version(struct gdlm_plock_info *info)
35{
36 if ((GDLM_PLOCK_VERSION_MAJOR != info->version[0]) ||
37 (GDLM_PLOCK_VERSION_MINOR < info->version[1])) {
38 log_error("plock device version mismatch: "
39 "kernel (%u.%u.%u), user (%u.%u.%u)",
40 GDLM_PLOCK_VERSION_MAJOR,
41 GDLM_PLOCK_VERSION_MINOR,
42 GDLM_PLOCK_VERSION_PATCH,
43 info->version[0],
44 info->version[1],
45 info->version[2]);
46 return -EINVAL;
47 }
48 return 0;
49}
50
51static void send_op(struct plock_op *op)
52{
53 set_version(&op->info);
54 INIT_LIST_HEAD(&op->list);
55 spin_lock(&ops_lock);
56 list_add_tail(&op->list, &send_list);
57 spin_unlock(&ops_lock);
58 wake_up(&send_wq);
59}
60
61int gdlm_plock(lm_lockspace_t *lockspace, struct lm_lockname *name,
62 struct file *file, int cmd, struct file_lock *fl)
63{
64 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace;
65 struct plock_op *op;
66 int rv;
67
68 op = kzalloc(sizeof(*op), GFP_KERNEL);
69 if (!op)
70 return -ENOMEM;
71
72 op->info.optype = GDLM_PLOCK_OP_LOCK;
73 op->info.pid = (uint32_t) fl->fl_owner;
74 op->info.ex = (fl->fl_type == F_WRLCK);
75 op->info.wait = IS_SETLKW(cmd);
76 op->info.fsid = ls->id;
77 op->info.number = name->ln_number;
78 op->info.start = fl->fl_start;
79 op->info.end = fl->fl_end;
80
81 send_op(op);
82 wait_event(recv_wq, (op->done != 0));
83
84 spin_lock(&ops_lock);
85 if (!list_empty(&op->list)) {
86 printk("plock op on list\n");
87 list_del(&op->list);
88 }
89 spin_unlock(&ops_lock);
90
91 rv = op->info.rv;
92
93 if (!rv) {
94 if (posix_lock_file_wait(file, fl) < 0)
95 log_error("gdlm_plock: vfs lock error %x,%llx",
96 name->ln_type, name->ln_number);
97 }
98
99 kfree(op);
100 return rv;
101}
102
103int gdlm_punlock(lm_lockspace_t *lockspace, struct lm_lockname *name,
104 struct file *file, struct file_lock *fl)
105{
106 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace;
107 struct plock_op *op;
108 int rv;
109
110 op = kzalloc(sizeof(*op), GFP_KERNEL);
111 if (!op)
112 return -ENOMEM;
113
114 if (posix_lock_file_wait(file, fl) < 0)
115 log_error("gdlm_punlock: vfs unlock error %x,%llx",
116 name->ln_type, name->ln_number);
117
118 op->info.optype = GDLM_PLOCK_OP_UNLOCK;
119 op->info.pid = (uint32_t) fl->fl_owner;
120 op->info.fsid = ls->id;
121 op->info.number = name->ln_number;
122 op->info.start = fl->fl_start;
123 op->info.end = fl->fl_end;
124
125 send_op(op);
126 wait_event(recv_wq, (op->done != 0));
127
128 spin_lock(&ops_lock);
129 if (!list_empty(&op->list)) {
130 printk("punlock op on list\n");
131 list_del(&op->list);
132 }
133 spin_unlock(&ops_lock);
134
135 rv = op->info.rv;
136
137 kfree(op);
138 return rv;
139}
140
141int gdlm_plock_get(lm_lockspace_t *lockspace, struct lm_lockname *name,
142 struct file *file, struct file_lock *fl)
143{
144 struct gdlm_ls *ls = (struct gdlm_ls *) lockspace;
145 struct plock_op *op;
146 int rv;
147
148 op = kzalloc(sizeof(*op), GFP_KERNEL);
149 if (!op)
150 return -ENOMEM;
151
152 op->info.optype = GDLM_PLOCK_OP_GET;
153 op->info.pid = (uint32_t) fl->fl_owner;
154 op->info.ex = (fl->fl_type == F_WRLCK);
155 op->info.fsid = ls->id;
156 op->info.number = name->ln_number;
157 op->info.start = fl->fl_start;
158 op->info.end = fl->fl_end;
159
160 send_op(op);
161 wait_event(recv_wq, (op->done != 0));
162
163 spin_lock(&ops_lock);
164 if (!list_empty(&op->list)) {
165 printk("plock_get op on list\n");
166 list_del(&op->list);
167 }
168 spin_unlock(&ops_lock);
169
170 rv = op->info.rv;
171
172 if (rv == 0)
173 fl->fl_type = F_UNLCK;
174 else if (rv > 0) {
175 fl->fl_type = (op->info.ex) ? F_WRLCK : F_RDLCK;
176 fl->fl_pid = op->info.pid;
177 fl->fl_start = op->info.start;
178 fl->fl_end = op->info.end;
179 }
180
181 kfree(op);
182 return rv;
183}
184
185/* a read copies out one plock request from the send list */
186static ssize_t dev_read(struct file *file, char __user *u, size_t count,
187 loff_t *ppos)
188{
189 struct gdlm_plock_info info;
190 struct plock_op *op = NULL;
191
192 if (count < sizeof(info))
193 return -EINVAL;
194
195 spin_lock(&ops_lock);
196 if (!list_empty(&send_list)) {
197 op = list_entry(send_list.next, struct plock_op, list);
198 list_move(&op->list, &recv_list);
199 memcpy(&info, &op->info, sizeof(info));
200 }
201 spin_unlock(&ops_lock);
202
203 if (!op)
204 return -EAGAIN;
205
206 if (copy_to_user(u, &info, sizeof(info)))
207 return -EFAULT;
208 return sizeof(info);
209}
210
211/* a write copies in one plock result that should match a plock_op
212 on the recv list */
213static ssize_t dev_write(struct file *file, const char __user *u, size_t count,
214 loff_t *ppos)
215{
216 struct gdlm_plock_info info;
217 struct plock_op *op;
218 int found = 0;
219
220 if (count != sizeof(info))
221 return -EINVAL;
222
223 if (copy_from_user(&info, u, sizeof(info)))
224 return -EFAULT;
225
226 if (check_version(&info))
227 return -EINVAL;
228
229 spin_lock(&ops_lock);
230 list_for_each_entry(op, &recv_list, list) {
231 if (op->info.fsid == info.fsid &&
232 op->info.number == info.number) {
233 list_del_init(&op->list);
234 found = 1;
235 op->done = 1;
236 memcpy(&op->info, &info, sizeof(info));
237 break;
238 }
239 }
240 spin_unlock(&ops_lock);
241
242 if (found)
243 wake_up(&recv_wq);
244 else
245 printk("gdlm dev_write no op %x %llx\n", info.fsid,
246 info.number);
247 return count;
248}
249
250static unsigned int dev_poll(struct file *file, poll_table *wait)
251{
252 poll_wait(file, &send_wq, wait);
253
254 spin_lock(&ops_lock);
255 if (!list_empty(&send_list)) {
256 spin_unlock(&ops_lock);
257 return POLLIN | POLLRDNORM;
258 }
259 spin_unlock(&ops_lock);
260 return 0;
261}
262
263static struct file_operations dev_fops = {
264 .read = dev_read,
265 .write = dev_write,
266 .poll = dev_poll,
267 .owner = THIS_MODULE
268};
269
270static struct miscdevice plock_dev_misc = {
271 .minor = MISC_DYNAMIC_MINOR,
272 .name = GDLM_PLOCK_MISC_NAME,
273 .fops = &dev_fops
274};
275
276int gdlm_plock_init(void)
277{
278 int rv;
279
280 spin_lock_init(&ops_lock);
281 INIT_LIST_HEAD(&send_list);
282 INIT_LIST_HEAD(&recv_list);
283 init_waitqueue_head(&send_wq);
284 init_waitqueue_head(&recv_wq);
285
286 rv = misc_register(&plock_dev_misc);
287 if (rv)
288 printk("gdlm_plock_init: misc_register failed %d", rv);
289 return rv;
290}
291
292void gdlm_plock_exit(void)
293{
294 if (misc_deregister(&plock_dev_misc) < 0)
295 printk("gdlm_plock_exit: misc_deregister failed");
296}
297
diff --git a/fs/gfs2/locking/dlm/sysfs.c b/fs/gfs2/locking/dlm/sysfs.c
index 8964733f55e4..e1e5186c97c9 100644
--- a/fs/gfs2/locking/dlm/sysfs.c
+++ b/fs/gfs2/locking/dlm/sysfs.c
@@ -1,21 +1,25 @@
1/****************************************************************************** 1/*
2******************************************************************************* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3** 3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4** Copyright (C) 2005 Red Hat, Inc. All rights reserved. 4 *
5** 5 * This copyrighted material is made available to anyone wishing to use,
6** This copyrighted material is made available to anyone wishing to use, 6 * modify, copy, or redistribute it subject to the terms and conditions
7** modify, copy, or redistribute it subject to the terms and conditions 7 * of the GNU General Public License v.2.
8** of the GNU General Public License v.2. 8 */
9**
10*******************************************************************************
11******************************************************************************/
12 9
13#include <linux/ctype.h> 10#include <linux/ctype.h>
14#include <linux/stat.h> 11#include <linux/stat.h>
15 12
16#include "lock_dlm.h" 13#include "lock_dlm.h"
17 14
18static ssize_t gdlm_block_show(struct gdlm_ls *ls, char *buf) 15extern struct lm_lockops gdlm_ops;
16
17static ssize_t proto_name_show(struct gdlm_ls *ls, char *buf)
18{
19 return sprintf(buf, "%s\n", gdlm_ops.lm_proto_name);
20}
21
22static ssize_t block_show(struct gdlm_ls *ls, char *buf)
19{ 23{
20 ssize_t ret; 24 ssize_t ret;
21 int val = 0; 25 int val = 0;
@@ -26,7 +30,7 @@ static ssize_t gdlm_block_show(struct gdlm_ls *ls, char *buf)
26 return ret; 30 return ret;
27} 31}
28 32
29static ssize_t gdlm_block_store(struct gdlm_ls *ls, const char *buf, size_t len) 33static ssize_t block_store(struct gdlm_ls *ls, const char *buf, size_t len)
30{ 34{
31 ssize_t ret = len; 35 ssize_t ret = len;
32 int val; 36 int val;
@@ -43,43 +47,7 @@ static ssize_t gdlm_block_store(struct gdlm_ls *ls, const char *buf, size_t len)
43 return ret; 47 return ret;
44} 48}
45 49
46static ssize_t gdlm_mounted_show(struct gdlm_ls *ls, char *buf) 50static ssize_t withdraw_show(struct gdlm_ls *ls, char *buf)
47{
48 ssize_t ret;
49 int val = -2;
50
51 if (test_bit(DFL_TERMINATE, &ls->flags))
52 val = -1;
53 else if (test_bit(DFL_LEAVE_DONE, &ls->flags))
54 val = 0;
55 else if (test_bit(DFL_JOIN_DONE, &ls->flags))
56 val = 1;
57 ret = sprintf(buf, "%d\n", val);
58 return ret;
59}
60
61static ssize_t gdlm_mounted_store(struct gdlm_ls *ls, const char *buf, size_t len)
62{
63 ssize_t ret = len;
64 int val;
65
66 val = simple_strtol(buf, NULL, 0);
67
68 if (val == 1)
69 set_bit(DFL_JOIN_DONE, &ls->flags);
70 else if (val == 0)
71 set_bit(DFL_LEAVE_DONE, &ls->flags);
72 else if (val == -1) {
73 set_bit(DFL_TERMINATE, &ls->flags);
74 set_bit(DFL_JOIN_DONE, &ls->flags);
75 set_bit(DFL_LEAVE_DONE, &ls->flags);
76 } else
77 ret = -EINVAL;
78 wake_up(&ls->wait_control);
79 return ret;
80}
81
82static ssize_t gdlm_withdraw_show(struct gdlm_ls *ls, char *buf)
83{ 51{
84 ssize_t ret; 52 ssize_t ret;
85 int val = 0; 53 int val = 0;
@@ -90,7 +58,7 @@ static ssize_t gdlm_withdraw_show(struct gdlm_ls *ls, char *buf)
90 return ret; 58 return ret;
91} 59}
92 60
93static ssize_t gdlm_withdraw_store(struct gdlm_ls *ls, const char *buf, size_t len) 61static ssize_t withdraw_store(struct gdlm_ls *ls, const char *buf, size_t len)
94{ 62{
95 ssize_t ret = len; 63 ssize_t ret = len;
96 int val; 64 int val;
@@ -105,67 +73,41 @@ static ssize_t gdlm_withdraw_store(struct gdlm_ls *ls, const char *buf, size_t l
105 return ret; 73 return ret;
106} 74}
107 75
108static ssize_t gdlm_jid_show(struct gdlm_ls *ls, char *buf) 76static ssize_t id_show(struct gdlm_ls *ls, char *buf)
109{
110 return sprintf(buf, "%u\n", ls->jid);
111}
112
113static ssize_t gdlm_jid_store(struct gdlm_ls *ls, const char *buf, size_t len)
114{ 77{
115 ls->jid = simple_strtol(buf, NULL, 0); 78 return sprintf(buf, "%u\n", ls->id);
116 return len;
117} 79}
118 80
119static ssize_t gdlm_first_show(struct gdlm_ls *ls, char *buf) 81static ssize_t jid_show(struct gdlm_ls *ls, char *buf)
120{ 82{
121 return sprintf(buf, "%u\n", ls->first); 83 return sprintf(buf, "%d\n", ls->jid);
122} 84}
123 85
124static ssize_t gdlm_first_store(struct gdlm_ls *ls, const char *buf, size_t len) 86static ssize_t first_show(struct gdlm_ls *ls, char *buf)
125{ 87{
126 ls->first = simple_strtol(buf, NULL, 0); 88 return sprintf(buf, "%d\n", ls->first);
127 return len;
128} 89}
129 90
130static ssize_t gdlm_first_done_show(struct gdlm_ls *ls, char *buf) 91static ssize_t first_done_show(struct gdlm_ls *ls, char *buf)
131{ 92{
132 return sprintf(buf, "%d\n", ls->first_done); 93 return sprintf(buf, "%d\n", ls->first_done);
133} 94}
134 95
135static ssize_t gdlm_recover_show(struct gdlm_ls *ls, char *buf) 96static ssize_t recover_show(struct gdlm_ls *ls, char *buf)
136{ 97{
137 return sprintf(buf, "%u\n", ls->recover_jid); 98 return sprintf(buf, "%d\n", ls->recover_jid);
138} 99}
139 100
140static ssize_t gdlm_recover_store(struct gdlm_ls *ls, const char *buf, size_t len) 101static ssize_t recover_store(struct gdlm_ls *ls, const char *buf, size_t len)
141{ 102{
142 ls->recover_jid = simple_strtol(buf, NULL, 0); 103 ls->recover_jid = simple_strtol(buf, NULL, 0);
143 ls->fscb(ls->fsdata, LM_CB_NEED_RECOVERY, &ls->recover_jid); 104 ls->fscb(ls->fsdata, LM_CB_NEED_RECOVERY, &ls->recover_jid);
144 return len; 105 return len;
145} 106}
146 107
147static ssize_t gdlm_recover_done_show(struct gdlm_ls *ls, char *buf) 108static ssize_t recover_done_show(struct gdlm_ls *ls, char *buf)
148{
149 ssize_t ret;
150 ret = sprintf(buf, "%d\n", ls->recover_done);
151 return ret;
152}
153
154static ssize_t gdlm_cluster_show(struct gdlm_ls *ls, char *buf)
155{
156 ssize_t ret;
157 ret = sprintf(buf, "%s\n", ls->clustername);
158 return ret;
159}
160
161static ssize_t gdlm_options_show(struct gdlm_ls *ls, char *buf)
162{ 109{
163 ssize_t ret = 0; 110 return sprintf(buf, "%d\n", ls->recover_jid_done);
164
165 if (ls->fsflags & LM_MFLAG_SPECTATOR)
166 ret += sprintf(buf, "spectator ");
167
168 return ret;
169} 111}
170 112
171struct gdlm_attr { 113struct gdlm_attr {
@@ -174,73 +116,29 @@ struct gdlm_attr {
174 ssize_t (*store)(struct gdlm_ls *, const char *, size_t); 116 ssize_t (*store)(struct gdlm_ls *, const char *, size_t);
175}; 117};
176 118
177static struct gdlm_attr gdlm_attr_block = { 119#define GDLM_ATTR(_name,_mode,_show,_store) \
178 .attr = {.name = "block", .mode = S_IRUGO | S_IWUSR}, 120static struct gdlm_attr gdlm_attr_##_name = __ATTR(_name,_mode,_show,_store)
179 .show = gdlm_block_show,
180 .store = gdlm_block_store
181};
182
183static struct gdlm_attr gdlm_attr_mounted = {
184 .attr = {.name = "mounted", .mode = S_IRUGO | S_IWUSR},
185 .show = gdlm_mounted_show,
186 .store = gdlm_mounted_store
187};
188
189static struct gdlm_attr gdlm_attr_withdraw = {
190 .attr = {.name = "withdraw", .mode = S_IRUGO | S_IWUSR},
191 .show = gdlm_withdraw_show,
192 .store = gdlm_withdraw_store
193};
194
195static struct gdlm_attr gdlm_attr_jid = {
196 .attr = {.name = "jid", .mode = S_IRUGO | S_IWUSR},
197 .show = gdlm_jid_show,
198 .store = gdlm_jid_store
199};
200
201static struct gdlm_attr gdlm_attr_first = {
202 .attr = {.name = "first", .mode = S_IRUGO | S_IWUSR},
203 .show = gdlm_first_show,
204 .store = gdlm_first_store
205};
206
207static struct gdlm_attr gdlm_attr_first_done = {
208 .attr = {.name = "first_done", .mode = S_IRUGO},
209 .show = gdlm_first_done_show,
210};
211
212static struct gdlm_attr gdlm_attr_recover = {
213 .attr = {.name = "recover", .mode = S_IRUGO | S_IWUSR},
214 .show = gdlm_recover_show,
215 .store = gdlm_recover_store
216};
217
218static struct gdlm_attr gdlm_attr_recover_done = {
219 .attr = {.name = "recover_done", .mode = S_IRUGO | S_IWUSR},
220 .show = gdlm_recover_done_show,
221};
222
223static struct gdlm_attr gdlm_attr_cluster = {
224 .attr = {.name = "cluster", .mode = S_IRUGO | S_IWUSR},
225 .show = gdlm_cluster_show,
226};
227 121
228static struct gdlm_attr gdlm_attr_options = { 122GDLM_ATTR(proto_name, 0444, proto_name_show, NULL);
229 .attr = {.name = "options", .mode = S_IRUGO | S_IWUSR}, 123GDLM_ATTR(block, 0644, block_show, block_store);
230 .show = gdlm_options_show, 124GDLM_ATTR(withdraw, 0644, withdraw_show, withdraw_store);
231}; 125GDLM_ATTR(id, 0444, id_show, NULL);
126GDLM_ATTR(jid, 0444, jid_show, NULL);
127GDLM_ATTR(first, 0444, first_show, NULL);
128GDLM_ATTR(first_done, 0444, first_done_show, NULL);
129GDLM_ATTR(recover, 0644, recover_show, recover_store);
130GDLM_ATTR(recover_done, 0444, recover_done_show, NULL);
232 131
233static struct attribute *gdlm_attrs[] = { 132static struct attribute *gdlm_attrs[] = {
133 &gdlm_attr_proto_name.attr,
234 &gdlm_attr_block.attr, 134 &gdlm_attr_block.attr,
235 &gdlm_attr_mounted.attr,
236 &gdlm_attr_withdraw.attr, 135 &gdlm_attr_withdraw.attr,
136 &gdlm_attr_id.attr,
237 &gdlm_attr_jid.attr, 137 &gdlm_attr_jid.attr,
238 &gdlm_attr_first.attr, 138 &gdlm_attr_first.attr,
239 &gdlm_attr_first_done.attr, 139 &gdlm_attr_first_done.attr,
240 &gdlm_attr_recover.attr, 140 &gdlm_attr_recover.attr,
241 &gdlm_attr_recover_done.attr, 141 &gdlm_attr_recover_done.attr,
242 &gdlm_attr_cluster.attr,
243 &gdlm_attr_options.attr,
244 NULL, 142 NULL,
245}; 143};
246 144
@@ -276,20 +174,25 @@ static struct kset gdlm_kset = {
276 .ktype = &gdlm_ktype, 174 .ktype = &gdlm_ktype,
277}; 175};
278 176
279int gdlm_kobject_setup(struct gdlm_ls *ls) 177int gdlm_kobject_setup(struct gdlm_ls *ls, struct kobject *fskobj)
280{ 178{
281 int error; 179 int error;
282 180
283 error = kobject_set_name(&ls->kobj, "%s", ls->fsname); 181 error = kobject_set_name(&ls->kobj, "%s", "lock_module");
284 if (error) 182 if (error) {
183 log_error("can't set kobj name %d", error);
285 return error; 184 return error;
185 }
286 186
287 ls->kobj.kset = &gdlm_kset; 187 ls->kobj.kset = &gdlm_kset;
288 ls->kobj.ktype = &gdlm_ktype; 188 ls->kobj.ktype = &gdlm_ktype;
189 ls->kobj.parent = fskobj;
289 190
290 error = kobject_register(&ls->kobj); 191 error = kobject_register(&ls->kobj);
192 if (error)
193 log_error("can't register kobj %d", error);
291 194
292 return 0; 195 return error;
293} 196}
294 197
295void gdlm_kobject_release(struct gdlm_ls *ls) 198void gdlm_kobject_release(struct gdlm_ls *ls)
diff --git a/fs/gfs2/locking/dlm/thread.c b/fs/gfs2/locking/dlm/thread.c
index 22bbe6d3a5ae..6fe669cd334b 100644
--- a/fs/gfs2/locking/dlm/thread.c
+++ b/fs/gfs2/locking/dlm/thread.c
@@ -1,15 +1,11 @@
1/****************************************************************************** 1/*
2******************************************************************************* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3** 3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 *
5** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. 5 * This copyrighted material is made available to anyone wishing to use,
6** 6 * modify, copy, or redistribute it subject to the terms and conditions
7** This copyrighted material is made available to anyone wishing to use, 7 * of the GNU General Public License v.2.
8** modify, copy, or redistribute it subject to the terms and conditions 8 */
9** of the GNU General Public License v.2.
10**
11*******************************************************************************
12******************************************************************************/
13 9
14#include "lock_dlm.h" 10#include "lock_dlm.h"
15 11
@@ -26,15 +22,10 @@ static void queue_submit(struct gdlm_lock *lp)
26 wake_up(&ls->thread_wait); 22 wake_up(&ls->thread_wait);
27} 23}
28 24
29static void process_submit(struct gdlm_lock *lp)
30{
31 gdlm_do_lock(lp, NULL);
32}
33
34static void process_blocking(struct gdlm_lock *lp, int bast_mode) 25static void process_blocking(struct gdlm_lock *lp, int bast_mode)
35{ 26{
36 struct gdlm_ls *ls = lp->ls; 27 struct gdlm_ls *ls = lp->ls;
37 unsigned int cb; 28 unsigned int cb = 0;
38 29
39 switch (gdlm_make_lmstate(bast_mode)) { 30 switch (gdlm_make_lmstate(bast_mode)) {
40 case LM_ST_EXCLUSIVE: 31 case LM_ST_EXCLUSIVE:
@@ -47,7 +38,7 @@ static void process_blocking(struct gdlm_lock *lp, int bast_mode)
47 cb = LM_CB_NEED_S; 38 cb = LM_CB_NEED_S;
48 break; 39 break;
49 default: 40 default:
50 GDLM_ASSERT(0, printk("unknown bast mode %u\n",lp->bast_mode);); 41 gdlm_assert(0, "unknown bast mode %u", lp->bast_mode);
51 } 42 }
52 43
53 ls->fscb(ls->fsdata, cb, &lp->lockname); 44 ls->fscb(ls->fsdata, cb, &lp->lockname);
@@ -62,9 +53,9 @@ static void process_complete(struct gdlm_lock *lp)
62 memset(&acb, 0, sizeof(acb)); 53 memset(&acb, 0, sizeof(acb));
63 54
64 if (lp->lksb.sb_status == -DLM_ECANCEL) { 55 if (lp->lksb.sb_status == -DLM_ECANCEL) {
65 log_all("complete dlm cancel %x,%"PRIx64" flags %lx", 56 log_info("complete dlm cancel %x,%llx flags %lx",
66 lp->lockname.ln_type, lp->lockname.ln_number, 57 lp->lockname.ln_type, lp->lockname.ln_number,
67 lp->flags); 58 lp->flags);
68 59
69 lp->req = lp->cur; 60 lp->req = lp->cur;
70 acb.lc_ret |= LM_OUT_CANCELED; 61 acb.lc_ret |= LM_OUT_CANCELED;
@@ -75,9 +66,9 @@ static void process_complete(struct gdlm_lock *lp)
75 66
76 if (test_and_clear_bit(LFL_DLM_UNLOCK, &lp->flags)) { 67 if (test_and_clear_bit(LFL_DLM_UNLOCK, &lp->flags)) {
77 if (lp->lksb.sb_status != -DLM_EUNLOCK) { 68 if (lp->lksb.sb_status != -DLM_EUNLOCK) {
78 log_all("unlock sb_status %d %x,%"PRIx64" flags %lx", 69 log_info("unlock sb_status %d %x,%llx flags %lx",
79 lp->lksb.sb_status, lp->lockname.ln_type, 70 lp->lksb.sb_status, lp->lockname.ln_type,
80 lp->lockname.ln_number, lp->flags); 71 lp->lockname.ln_number, lp->flags);
81 return; 72 return;
82 } 73 }
83 74
@@ -108,8 +99,8 @@ static void process_complete(struct gdlm_lock *lp)
108 */ 99 */
109 100
110 if (test_and_clear_bit(LFL_CANCEL, &lp->flags)) { 101 if (test_and_clear_bit(LFL_CANCEL, &lp->flags)) {
111 log_all("complete internal cancel %x,%"PRIx64"", 102 log_info("complete internal cancel %x,%llx",
112 lp->lockname.ln_type, lp->lockname.ln_number); 103 lp->lockname.ln_type, lp->lockname.ln_number);
113 lp->req = lp->cur; 104 lp->req = lp->cur;
114 acb.lc_ret |= LM_OUT_CANCELED; 105 acb.lc_ret |= LM_OUT_CANCELED;
115 goto out; 106 goto out;
@@ -130,9 +121,9 @@ static void process_complete(struct gdlm_lock *lp)
130 } 121 }
131 122
132 /* this could only happen with cancels I think */ 123 /* this could only happen with cancels I think */
133 log_all("ast sb_status %d %x,%"PRIx64" flags %lx", 124 log_info("ast sb_status %d %x,%llx flags %lx",
134 lp->lksb.sb_status, lp->lockname.ln_type, 125 lp->lksb.sb_status, lp->lockname.ln_type,
135 lp->lockname.ln_number, lp->flags); 126 lp->lockname.ln_number, lp->flags);
136 return; 127 return;
137 } 128 }
138 129
@@ -152,8 +143,10 @@ static void process_complete(struct gdlm_lock *lp)
152 */ 143 */
153 144
154 if (test_and_clear_bit(LFL_REREQUEST, &lp->flags)) { 145 if (test_and_clear_bit(LFL_REREQUEST, &lp->flags)) {
155 GDLM_ASSERT(lp->req == DLM_LOCK_NL,); 146 gdlm_assert(lp->req == DLM_LOCK_NL, "%x,%llx",
156 GDLM_ASSERT(lp->prev_req > DLM_LOCK_NL,); 147 lp->lockname.ln_type, lp->lockname.ln_number);
148 gdlm_assert(lp->prev_req > DLM_LOCK_NL, "%x,%llx",
149 lp->lockname.ln_type, lp->lockname.ln_number);
157 150
158 lp->cur = DLM_LOCK_NL; 151 lp->cur = DLM_LOCK_NL;
159 lp->req = lp->prev_req; 152 lp->req = lp->prev_req;
@@ -189,7 +182,7 @@ static void process_complete(struct gdlm_lock *lp)
189 lp->lkf |= DLM_LKF_CONVERT; 182 lp->lkf |= DLM_LKF_CONVERT;
190 lp->lkf &= ~DLM_LKF_CONVDEADLK; 183 lp->lkf &= ~DLM_LKF_CONVDEADLK;
191 184
192 log_debug("rereq %x,%"PRIx64" id %x %d,%d", 185 log_debug("rereq %x,%llx id %x %d,%d",
193 lp->lockname.ln_type, lp->lockname.ln_number, 186 lp->lockname.ln_type, lp->lockname.ln_number,
194 lp->lksb.sb_lkid, lp->cur, lp->req); 187 lp->lksb.sb_lkid, lp->cur, lp->req);
195 188
@@ -315,7 +308,7 @@ static int gdlm_thread(void *data)
315 process_blocking(lp, blocking); 308 process_blocking(lp, blocking);
316 309
317 else if (submit) 310 else if (submit)
318 process_submit(lp); 311 gdlm_do_lock(lp, NULL);
319 312
320 if (drop) 313 if (drop)
321 ls->fscb(ls->fsdata, LM_CB_DROPLOCKS, NULL); 314 ls->fscb(ls->fsdata, LM_CB_DROPLOCKS, NULL);
@@ -334,7 +327,7 @@ int gdlm_init_threads(struct gdlm_ls *ls)
334 p = kthread_run(gdlm_thread, ls, "lock_dlm1"); 327 p = kthread_run(gdlm_thread, ls, "lock_dlm1");
335 error = IS_ERR(p); 328 error = IS_ERR(p);
336 if (error) { 329 if (error) {
337 log_all("can't start lock_dlm1 thread %d", error); 330 log_error("can't start lock_dlm1 thread %d", error);
338 return error; 331 return error;
339 } 332 }
340 ls->thread1 = p; 333 ls->thread1 = p;
@@ -342,7 +335,7 @@ int gdlm_init_threads(struct gdlm_ls *ls)
342 p = kthread_run(gdlm_thread, ls, "lock_dlm2"); 335 p = kthread_run(gdlm_thread, ls, "lock_dlm2");
343 error = IS_ERR(p); 336 error = IS_ERR(p);
344 if (error) { 337 if (error) {
345 log_all("can't start lock_dlm2 thread %d", error); 338 log_error("can't start lock_dlm2 thread %d", error);
346 kthread_stop(ls->thread1); 339 kthread_stop(ls->thread1);
347 return error; 340 return error;
348 } 341 }
diff --git a/fs/gfs2/locking/nolock/lock_nolock.mod.c b/fs/gfs2/locking/nolock/lock_nolock.mod.c
deleted file mode 100644
index ae92522b2182..000000000000
--- a/fs/gfs2/locking/nolock/lock_nolock.mod.c
+++ /dev/null
@@ -1,44 +0,0 @@
1#include <linux/module.h>
2#include <linux/vermagic.h>
3#include <linux/compiler.h>
4
5MODULE_INFO(vermagic, VERMAGIC_STRING);
6
7#undef unix
8struct module __this_module
9__attribute__((section(".gnu.linkonce.this_module"))) = {
10 .name = __stringify(KBUILD_MODNAME),
11 .init = init_module,
12#ifdef CONFIG_MODULE_UNLOAD
13 .exit = cleanup_module,
14#endif
15};
16
17static const struct modversion_info ____versions[]
18__attribute_used__
19__attribute__((section("__versions"))) = {
20 { 0x316962fc, "struct_module" },
21 { 0x5a34a45c, "__kmalloc" },
22 { 0x724beef2, "malloc_sizes" },
23 { 0x3fa03a97, "memset" },
24 { 0xc16fe12d, "__memcpy" },
25 { 0xdd132261, "printk" },
26 { 0x859204af, "sscanf" },
27 { 0x3656bf5a, "lock_kernel" },
28 { 0x1e6d26a8, "strstr" },
29 { 0x41ede9df, "lm_register_proto" },
30 { 0xb1f975aa, "unlock_kernel" },
31 { 0x87b0b01f, "posix_lock_file_wait" },
32 { 0x75f29cfd, "kmem_cache_alloc" },
33 { 0x69384280, "lm_unregister_proto" },
34 { 0x37a0cba, "kfree" },
35 { 0x5d16bfe6, "posix_test_lock" },
36};
37
38static const char __module_depends[]
39__attribute_used__
40__attribute__((section(".modinfo"))) =
41"depends=gfs2";
42
43
44MODULE_INFO(srcversion, "123E446F965A386A0C017C4");
diff --git a/fs/gfs2/locking/nolock/main.c b/fs/gfs2/locking/nolock/main.c
index d3919e471163..b716e336c073 100644
--- a/fs/gfs2/locking/nolock/main.c
+++ b/fs/gfs2/locking/nolock/main.c
@@ -1,15 +1,11 @@
1/****************************************************************************** 1/*
2******************************************************************************* 2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3** 3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
4** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. 4 *
5** Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved. 5 * This copyrighted material is made available to anyone wishing to use,
6** 6 * modify, copy, or redistribute it subject to the terms and conditions
7** This copyrighted material is made available to anyone wishing to use, 7 * of the GNU General Public License v.2.
8** modify, copy, or redistribute it subject to the terms and conditions 8 */
9** of the GNU General Public License v.2.
10**
11*******************************************************************************
12******************************************************************************/
13 9
14#include <linux/module.h> 10#include <linux/module.h>
15#include <linux/slab.h> 11#include <linux/slab.h>
@@ -27,23 +23,11 @@ struct nolock_lockspace {
27 23
28struct lm_lockops nolock_ops; 24struct lm_lockops nolock_ops;
29 25
30/**
31 * nolock_mount - mount a nolock lockspace
32 * @table_name: the name of the space to mount
33 * @host_data: host specific data
34 * @cb: the callback
35 * @fsdata:
36 * @min_lvb_size:
37 * @flags:
38 * @lockstruct: the structure of crap to fill in
39 *
40 * Returns: 0 on success, -EXXX on failure
41 */
42
43static int nolock_mount(char *table_name, char *host_data, 26static int nolock_mount(char *table_name, char *host_data,
44 lm_callback_t cb, lm_fsdata_t *fsdata, 27 lm_callback_t cb, lm_fsdata_t *fsdata,
45 unsigned int min_lvb_size, int flags, 28 unsigned int min_lvb_size, int flags,
46 struct lm_lockstruct *lockstruct) 29 struct lm_lockstruct *lockstruct,
30 struct kobject *fskobj)
47{ 31{
48 char *c; 32 char *c;
49 unsigned int jid; 33 unsigned int jid;
@@ -77,34 +61,16 @@ static int nolock_mount(char *table_name, char *host_data,
77 return 0; 61 return 0;
78} 62}
79 63
80/**
81 * nolock_others_may_mount - unmount a lock space
82 * @lockspace: the lockspace to unmount
83 *
84 */
85
86static void nolock_others_may_mount(lm_lockspace_t *lockspace) 64static void nolock_others_may_mount(lm_lockspace_t *lockspace)
87{ 65{
88} 66}
89 67
90/**
91 * nolock_unmount - unmount a lock space
92 * @lockspace: the lockspace to unmount
93 *
94 */
95
96static void nolock_unmount(lm_lockspace_t *lockspace) 68static void nolock_unmount(lm_lockspace_t *lockspace)
97{ 69{
98 struct nolock_lockspace *nl = (struct nolock_lockspace *)lockspace; 70 struct nolock_lockspace *nl = (struct nolock_lockspace *)lockspace;
99 kfree(nl); 71 kfree(nl);
100} 72}
101 73
102/**
103 * nolock_withdraw - withdraw from a lock space
104 * @lockspace: the lockspace
105 *
106 */
107
108static void nolock_withdraw(lm_lockspace_t *lockspace) 74static void nolock_withdraw(lm_lockspace_t *lockspace)
109{ 75{
110} 76}
@@ -164,12 +130,6 @@ static unsigned int nolock_unlock(lm_lock_t *lock, unsigned int cur_state)
164 return 0; 130 return 0;
165} 131}
166 132
167/**
168 * nolock_cancel - cancel a request on a lock
169 * @lock: the lock to cancel request for
170 *
171 */
172
173static void nolock_cancel(lm_lock_t *lock) 133static void nolock_cancel(lm_lock_t *lock)
174{ 134{
175} 135}
@@ -219,16 +179,6 @@ static void nolock_sync_lvb(lm_lock_t *lock, char *lvb)
219{ 179{
220} 180}
221 181
222/**
223 * nolock_plock_get -
224 * @lockspace: the lockspace
225 * @name:
226 * @file:
227 * @fl:
228 *
229 * Returns: errno
230 */
231
232static int nolock_plock_get(lm_lockspace_t *lockspace, struct lm_lockname *name, 182static int nolock_plock_get(lm_lockspace_t *lockspace, struct lm_lockname *name,
233 struct file *file, struct file_lock *fl) 183 struct file *file, struct file_lock *fl)
234{ 184{
@@ -244,17 +194,6 @@ static int nolock_plock_get(lm_lockspace_t *lockspace, struct lm_lockname *name,
244 return 0; 194 return 0;
245} 195}
246 196
247/**
248 * nolock_plock -
249 * @lockspace: the lockspace
250 * @name:
251 * @file:
252 * @cmd:
253 * @fl:
254 *
255 * Returns: errno
256 */
257
258static int nolock_plock(lm_lockspace_t *lockspace, struct lm_lockname *name, 197static int nolock_plock(lm_lockspace_t *lockspace, struct lm_lockname *name,
259 struct file *file, int cmd, struct file_lock *fl) 198 struct file *file, int cmd, struct file_lock *fl)
260{ 199{
@@ -265,16 +204,6 @@ static int nolock_plock(lm_lockspace_t *lockspace, struct lm_lockname *name,
265 return error; 204 return error;
266} 205}
267 206
268/**
269 * nolock_punlock -
270 * @lockspace: the lockspace
271 * @name:
272 * @file:
273 * @fl:
274 *
275 * Returns: errno
276 */
277
278static int nolock_punlock(lm_lockspace_t *lockspace, struct lm_lockname *name, 207static int nolock_punlock(lm_lockspace_t *lockspace, struct lm_lockname *name,
279 struct file *file, struct file_lock *fl) 208 struct file *file, struct file_lock *fl)
280{ 209{
@@ -285,13 +214,6 @@ static int nolock_punlock(lm_lockspace_t *lockspace, struct lm_lockname *name,
285 return error; 214 return error;
286} 215}
287 216
288/**
289 * nolock_recovery_done - reset the expired locks for a given jid
290 * @lockspace: the lockspace
291 * @jid: the jid
292 *
293 */
294
295static void nolock_recovery_done(lm_lockspace_t *lockspace, unsigned int jid, 217static void nolock_recovery_done(lm_lockspace_t *lockspace, unsigned int jid,
296 unsigned int message) 218 unsigned int message)
297{ 219{
@@ -318,17 +240,11 @@ struct lm_lockops nolock_ops = {
318 .lm_owner = THIS_MODULE, 240 .lm_owner = THIS_MODULE,
319}; 241};
320 242
321/**
322 * init_nolock - Initialize the nolock module
323 *
324 * Returns: 0 on success, -EXXX on failure
325 */
326
327int __init init_nolock(void) 243int __init init_nolock(void)
328{ 244{
329 int error; 245 int error;
330 246
331 error = lm_register_proto(&nolock_ops); 247 error = gfs_register_lockproto(&nolock_ops);
332 if (error) { 248 if (error) {
333 printk("lock_nolock: can't register protocol: %d\n", error); 249 printk("lock_nolock: can't register protocol: %d\n", error);
334 return error; 250 return error;
@@ -338,14 +254,9 @@ int __init init_nolock(void)
338 return 0; 254 return 0;
339} 255}
340 256
341/**
342 * exit_nolock - cleanup the nolock module
343 *
344 */
345
346void __exit exit_nolock(void) 257void __exit exit_nolock(void)
347{ 258{
348 lm_unregister_proto(&nolock_ops); 259 gfs_unregister_lockproto(&nolock_ops);
349} 260}
350 261
351module_init(init_nolock); 262module_init(init_nolock);
diff --git a/include/linux/lock_dlm_plock.h b/include/linux/lock_dlm_plock.h
new file mode 100644
index 000000000000..007b07a178ab
--- /dev/null
+++ b/include/linux/lock_dlm_plock.h
@@ -0,0 +1,40 @@
1/*
2 * Copyright (C) 2005 Red Hat, Inc. All rights reserved.
3 *
4 * This copyrighted material is made available to anyone wishing to use,
5 * modify, copy, or redistribute it subject to the terms and conditions
6 * of the GNU General Public License v.2.
7 */
8
9#ifndef __LOCK_DLM_PLOCK_DOT_H__
10#define __LOCK_DLM_PLOCK_DOT_H__
11
12#define GDLM_PLOCK_MISC_NAME "lock_dlm_plock"
13
14#define GDLM_PLOCK_VERSION_MAJOR 1
15#define GDLM_PLOCK_VERSION_MINOR 0
16#define GDLM_PLOCK_VERSION_PATCH 0
17
18enum {
19 GDLM_PLOCK_OP_LOCK = 1,
20 GDLM_PLOCK_OP_UNLOCK,
21 GDLM_PLOCK_OP_GET,
22};
23
24struct gdlm_plock_info {
25 __u32 version[3];
26 __u8 optype;
27 __u8 ex;
28 __u8 wait;
29 __u8 pad;
30 __u32 pid;
31 __s32 nodeid;
32 __s32 rv;
33 __u32 fsid;
34 __u64 number;
35 __u64 start;
36 __u64 end;
37};
38
39#endif
40
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-28 04:19:06 -0500