1 /******************************************************************************
2 *******************************************************************************
3 **
4 ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
5 ** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
6 **
7 ** This copyrighted material is made available to anyone wishing to use,
8 ** modify, copy, or redistribute it subject to the terms and conditions
9 ** of the GNU General Public License v.2.
10 **
11 *******************************************************************************
12 ******************************************************************************/
13
14 #ifndef __DLM_INTERNAL_DOT_H__
15 #define __DLM_INTERNAL_DOT_H__
16
17 /*
18 * This is the main header file to be included in each DLM source file.
19 */
20
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/sched.h>
24 #include <linux/types.h>
25 #include <linux/ctype.h>
26 #include <linux/spinlock.h>
27 #include <linux/vmalloc.h>
28 #include <linux/list.h>
29 #include <linux/errno.h>
30 #include <linux/random.h>
31 #include <linux/delay.h>
32 #include <linux/socket.h>
33 #include <linux/kthread.h>
34 #include <linux/kobject.h>
35 #include <linux/kref.h>
36 #include <linux/kernel.h>
37 #include <linux/jhash.h>
38 #include <linux/miscdevice.h>
39 #include <linux/mutex.h>
40 #include <linux/idr.h>
41 #include <asm/uaccess.h>
42
43 #include <linux/dlm.h>
44 #include "config.h"
45
46 /* Size of the temp buffer midcomms allocates on the stack.
47 We try to make this large enough so most messages fit.
48 FIXME: should sctp make this unnecessary? */
49
50 #define DLM_INBUF_LEN 148
51
52 struct dlm_ls;
53 struct dlm_lkb;
54 struct dlm_rsb;
55 struct dlm_member;
56 struct dlm_rsbtable;
57 struct dlm_dirtable;
58 struct dlm_direntry;
59 struct dlm_recover;
60 struct dlm_header;
61 struct dlm_message;
62 struct dlm_rcom;
63 struct dlm_mhandle;
64
65 #define log_print(fmt, args...) \
66 printk(KERN_ERR "dlm: "fmt"\n" , ##args)
67 #define log_error(ls, fmt, args...) \
68 printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args)
69
70 #define log_debug(ls, fmt, args...) \
71 do { \
72 if (dlm_config.ci_log_debug) \
73 printk(KERN_DEBUG "dlm: %s: " fmt "\n", \
74 (ls)->ls_name , ##args); \
75 } while (0)
76
77 #define DLM_ASSERT(x, do) \
78 { \
79 if (!(x)) \
80 { \
81 printk(KERN_ERR "\nDLM: Assertion failed on line %d of file %s\n" \
82 "DLM: assertion: \"%s\"\n" \
83 "DLM: time = %lu\n", \
84 __LINE__, __FILE__, #x, jiffies); \
85 {do} \
86 printk("\n"); \
87 BUG(); \
88 panic("DLM: Record message above and reboot.\n"); \
89 } \
90 }
91
92
93 struct dlm_direntry {
94 struct list_head list;
95 uint32_t master_nodeid;
96 uint16_t length;
97 char name[1];
98 };
99
100 struct dlm_dirtable {
101 struct list_head list;
102 spinlock_t lock;
103 };
104
105 struct dlm_rsbtable {
106 struct rb_root keep;
107 struct rb_root toss;
108 spinlock_t lock;
109 };
110
111
112 /*
113 * Lockspace member (per node in a ls)
114 */
115
116 struct dlm_member {
117 struct list_head list;
118 int nodeid;
119 int weight;
120 int slot;
121 int slot_prev;
122 int comm_seq;
123 uint32_t generation;
124 };
125
126 /*
127 * Save and manage recovery state for a lockspace.
128 */
129
130 struct dlm_recover {
131 struct list_head list;
132 struct dlm_config_node *nodes;
133 int nodes_count;
134 uint64_t seq;
135 };
136
137 /*
138 * Pass input args to second stage locking function.
139 */
140
141 struct dlm_args {
142 uint32_t flags;
143 void (*astfn) (void *astparam);
144 void *astparam;
145 void (*bastfn) (void *astparam, int mode);
146 int mode;
147 struct dlm_lksb *lksb;
148 unsigned long timeout;
149 };
150
151
152 /*
153 * Lock block
154 *
155 * A lock can be one of three types:
156 *
157 * local copy lock is mastered locally
158 * (lkb_nodeid is zero and DLM_LKF_MSTCPY is not set)
159 * process copy lock is mastered on a remote node
160 * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is not set)
161 * master copy master node's copy of a lock owned by remote node
162 * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is set)
163 *
164 * lkb_exflags: a copy of the most recent flags arg provided to dlm_lock or
165 * dlm_unlock. The dlm does not modify these or use any private flags in
166 * this field; it only contains DLM_LKF_ flags from dlm.h. These flags
167 * are sent as-is to the remote master when the lock is remote.
168 *
169 * lkb_flags: internal dlm flags (DLM_IFL_ prefix) from dlm_internal.h.
170 * Some internal flags are shared between the master and process nodes;
171 * these shared flags are kept in the lower two bytes. One of these
172 * flags set on the master copy will be propagated to the process copy
173 * and v.v. Other internal flags are private to the master or process
174 * node (e.g. DLM_IFL_MSTCPY). These are kept in the high two bytes.
175 *
176 * lkb_sbflags: status block flags. These flags are copied directly into
177 * the caller's lksb.sb_flags prior to the dlm_lock/dlm_unlock completion
178 * ast. All defined in dlm.h with DLM_SBF_ prefix.
179 *
180 * lkb_status: the lock status indicates which rsb queue the lock is
181 * on, grant, convert, or wait. DLM_LKSTS_ WAITING/GRANTED/CONVERT
182 *
183 * lkb_wait_type: the dlm message type (DLM_MSG_ prefix) for which a
184 * reply is needed. Only set when the lkb is on the lockspace waiters
185 * list awaiting a reply from a remote node.
186 *
187 * lkb_nodeid: when the lkb is a local copy, nodeid is 0; when the lkb
188 * is a master copy, nodeid specifies the remote lock holder, when the
189 * lkb is a process copy, the nodeid specifies the lock master.
190 */
191
192 /* lkb_status */
193
194 #define DLM_LKSTS_WAITING 1
195 #define DLM_LKSTS_GRANTED 2
196 #define DLM_LKSTS_CONVERT 3
197
198 /* lkb_flags */
199
200 #define DLM_IFL_MSTCPY 0x00010000
201 #define DLM_IFL_RESEND 0x00020000
202 #define DLM_IFL_DEAD 0x00040000
203 #define DLM_IFL_OVERLAP_UNLOCK 0x00080000
204 #define DLM_IFL_OVERLAP_CANCEL 0x00100000
205 #define DLM_IFL_ENDOFLIFE 0x00200000
206 #define DLM_IFL_WATCH_TIMEWARN 0x00400000
207 #define DLM_IFL_TIMEOUT_CANCEL 0x00800000
208 #define DLM_IFL_DEADLOCK_CANCEL 0x01000000
209 #define DLM_IFL_STUB_MS 0x02000000 /* magic number for m_flags */
210 #define DLM_IFL_USER 0x00000001
211 #define DLM_IFL_ORPHAN 0x00000002
212
213 #define DLM_CALLBACKS_SIZE 6
214
215 #define DLM_CB_CAST 0x00000001
216 #define DLM_CB_BAST 0x00000002
217 #define DLM_CB_SKIP 0x00000004
218
219 struct dlm_callback {
220 uint64_t seq;
221 uint32_t flags; /* DLM_CBF_ */
222 int sb_status; /* copy to lksb status */
223 uint8_t sb_flags; /* copy to lksb flags */
224 int8_t mode; /* rq mode of bast, gr mode of cast */
225 };
226
227 struct dlm_lkb {
228 struct dlm_rsb *lkb_resource; /* the rsb */
229 struct kref lkb_ref;
230 int lkb_nodeid; /* copied from rsb */
231 int lkb_ownpid; /* pid of lock owner */
232 uint32_t lkb_id; /* our lock ID */
233 uint32_t lkb_remid; /* lock ID on remote partner */
234 uint32_t lkb_exflags; /* external flags from caller */
235 uint32_t lkb_sbflags; /* lksb flags */
236 uint32_t lkb_flags; /* internal flags */
237 uint32_t lkb_lvbseq; /* lvb sequence number */
238
239 int8_t lkb_status; /* granted, waiting, convert */
240 int8_t lkb_rqmode; /* requested lock mode */
241 int8_t lkb_grmode; /* granted lock mode */
242 int8_t lkb_highbast; /* highest mode bast sent for */
243
244 int8_t lkb_wait_type; /* type of reply waiting for */
245 int8_t lkb_wait_count;
246 int lkb_wait_nodeid; /* for debugging */
247
248 struct list_head lkb_statequeue; /* rsb g/c/w list */
249 struct list_head lkb_rsb_lookup; /* waiting for rsb lookup */
250 struct list_head lkb_wait_reply; /* waiting for remote reply */
251 struct list_head lkb_ownqueue; /* list of locks for a process */
252 struct list_head lkb_time_list;
253 ktime_t lkb_timestamp;
254 ktime_t lkb_wait_time;
255 unsigned long lkb_timeout_cs;
256
257 struct mutex lkb_cb_mutex;
258 struct work_struct lkb_cb_work;
259 struct list_head lkb_cb_list; /* for ls_cb_delay or proc->asts */
260 struct dlm_callback lkb_callbacks[DLM_CALLBACKS_SIZE];
261 struct dlm_callback lkb_last_cast;
262 struct dlm_callback lkb_last_bast;
263 ktime_t lkb_last_cast_time; /* for debugging */
264 ktime_t lkb_last_bast_time; /* for debugging */
265
266 char *lkb_lvbptr;
267 struct dlm_lksb *lkb_lksb; /* caller's status block */
268 void (*lkb_astfn) (void *astparam);
269 void (*lkb_bastfn) (void *astparam, int mode);
270 union {
271 void *lkb_astparam; /* caller's ast arg */
272 struct dlm_user_args *lkb_ua;
273 };
274 };
275
276
277 struct dlm_rsb {
278 struct dlm_ls *res_ls; /* the lockspace */
279 struct kref res_ref;
280 struct mutex res_mutex;
281 unsigned long res_flags;
282 int res_length; /* length of rsb name */
283 int res_nodeid;
284 uint32_t res_lvbseq;
285 uint32_t res_hash;
286 uint32_t res_bucket; /* rsbtbl */
287 unsigned long res_toss_time;
288 uint32_t res_first_lkid;
289 struct list_head res_lookup; /* lkbs waiting on first */
290 union {
291 struct list_head res_hashchain;
292 struct rb_node res_hashnode; /* rsbtbl */
293 };
294 struct list_head res_grantqueue;
295 struct list_head res_convertqueue;
296 struct list_head res_waitqueue;
297
298 struct list_head res_root_list; /* used for recovery */
299 struct list_head res_recover_list; /* used for recovery */
300 int res_recover_locks_count;
301
302 char *res_lvbptr;
303 char res_name[DLM_RESNAME_MAXLEN+1];
304 };
305
306 /* find_rsb() flags */
307
308 #define R_MASTER 1 /* only return rsb if it's a master */
309 #define R_CREATE 2 /* create/add rsb if not found */
310
311 /* rsb_flags */
312
313 enum rsb_flags {
314 RSB_MASTER_UNCERTAIN,
315 RSB_VALNOTVALID,
316 RSB_VALNOTVALID_PREV,
317 RSB_NEW_MASTER,
318 RSB_NEW_MASTER2,
319 RSB_RECOVER_CONVERT,
320 RSB_LOCKS_PURGED,
321 };
322
rsb_set_flag(struct dlm_rsb * r,enum rsb_flags flag)323 static inline void rsb_set_flag(struct dlm_rsb *r, enum rsb_flags flag)
324 {
325 __set_bit(flag, &r->res_flags);
326 }
327
rsb_clear_flag(struct dlm_rsb * r,enum rsb_flags flag)328 static inline void rsb_clear_flag(struct dlm_rsb *r, enum rsb_flags flag)
329 {
330 __clear_bit(flag, &r->res_flags);
331 }
332
rsb_flag(struct dlm_rsb * r,enum rsb_flags flag)333 static inline int rsb_flag(struct dlm_rsb *r, enum rsb_flags flag)
334 {
335 return test_bit(flag, &r->res_flags);
336 }
337
338
339 /* dlm_header is first element of all structs sent between nodes */
340
341 #define DLM_HEADER_MAJOR 0x00030000
342 #define DLM_HEADER_MINOR 0x00000001
343
344 #define DLM_HEADER_SLOTS 0x00000001
345
346 #define DLM_MSG 1
347 #define DLM_RCOM 2
348
349 struct dlm_header {
350 uint32_t h_version;
351 uint32_t h_lockspace;
352 uint32_t h_nodeid; /* nodeid of sender */
353 uint16_t h_length;
354 uint8_t h_cmd; /* DLM_MSG, DLM_RCOM */
355 uint8_t h_pad;
356 };
357
358
359 #define DLM_MSG_REQUEST 1
360 #define DLM_MSG_CONVERT 2
361 #define DLM_MSG_UNLOCK 3
362 #define DLM_MSG_CANCEL 4
363 #define DLM_MSG_REQUEST_REPLY 5
364 #define DLM_MSG_CONVERT_REPLY 6
365 #define DLM_MSG_UNLOCK_REPLY 7
366 #define DLM_MSG_CANCEL_REPLY 8
367 #define DLM_MSG_GRANT 9
368 #define DLM_MSG_BAST 10
369 #define DLM_MSG_LOOKUP 11
370 #define DLM_MSG_REMOVE 12
371 #define DLM_MSG_LOOKUP_REPLY 13
372 #define DLM_MSG_PURGE 14
373
374 struct dlm_message {
375 struct dlm_header m_header;
376 uint32_t m_type; /* DLM_MSG_ */
377 uint32_t m_nodeid;
378 uint32_t m_pid;
379 uint32_t m_lkid; /* lkid on sender */
380 uint32_t m_remid; /* lkid on receiver */
381 uint32_t m_parent_lkid;
382 uint32_t m_parent_remid;
383 uint32_t m_exflags;
384 uint32_t m_sbflags;
385 uint32_t m_flags;
386 uint32_t m_lvbseq;
387 uint32_t m_hash;
388 int m_status;
389 int m_grmode;
390 int m_rqmode;
391 int m_bastmode;
392 int m_asts;
393 int m_result; /* 0 or -EXXX */
394 char m_extra[0]; /* name or lvb */
395 };
396
397
398 #define DLM_RS_NODES 0x00000001
399 #define DLM_RS_NODES_ALL 0x00000002
400 #define DLM_RS_DIR 0x00000004
401 #define DLM_RS_DIR_ALL 0x00000008
402 #define DLM_RS_LOCKS 0x00000010
403 #define DLM_RS_LOCKS_ALL 0x00000020
404 #define DLM_RS_DONE 0x00000040
405 #define DLM_RS_DONE_ALL 0x00000080
406
407 #define DLM_RCOM_STATUS 1
408 #define DLM_RCOM_NAMES 2
409 #define DLM_RCOM_LOOKUP 3
410 #define DLM_RCOM_LOCK 4
411 #define DLM_RCOM_STATUS_REPLY 5
412 #define DLM_RCOM_NAMES_REPLY 6
413 #define DLM_RCOM_LOOKUP_REPLY 7
414 #define DLM_RCOM_LOCK_REPLY 8
415
416 struct dlm_rcom {
417 struct dlm_header rc_header;
418 uint32_t rc_type; /* DLM_RCOM_ */
419 int rc_result; /* multi-purpose */
420 uint64_t rc_id; /* match reply with request */
421 uint64_t rc_seq; /* sender's ls_recover_seq */
422 uint64_t rc_seq_reply; /* remote ls_recover_seq */
423 char rc_buf[0];
424 };
425
426 union dlm_packet {
427 struct dlm_header header; /* common to other two */
428 struct dlm_message message;
429 struct dlm_rcom rcom;
430 };
431
432 #define DLM_RSF_NEED_SLOTS 0x00000001
433
434 /* RCOM_STATUS data */
435 struct rcom_status {
436 __le32 rs_flags;
437 __le32 rs_unused1;
438 __le64 rs_unused2;
439 };
440
441 /* RCOM_STATUS_REPLY data */
442 struct rcom_config {
443 __le32 rf_lvblen;
444 __le32 rf_lsflags;
445
446 /* DLM_HEADER_SLOTS adds: */
447 __le32 rf_flags;
448 __le16 rf_our_slot;
449 __le16 rf_num_slots;
450 __le32 rf_generation;
451 __le32 rf_unused1;
452 __le64 rf_unused2;
453 };
454
455 struct rcom_slot {
456 __le32 ro_nodeid;
457 __le16 ro_slot;
458 __le16 ro_unused1;
459 __le64 ro_unused2;
460 };
461
462 struct rcom_lock {
463 __le32 rl_ownpid;
464 __le32 rl_lkid;
465 __le32 rl_remid;
466 __le32 rl_parent_lkid;
467 __le32 rl_parent_remid;
468 __le32 rl_exflags;
469 __le32 rl_flags;
470 __le32 rl_lvbseq;
471 __le32 rl_result;
472 int8_t rl_rqmode;
473 int8_t rl_grmode;
474 int8_t rl_status;
475 int8_t rl_asts;
476 __le16 rl_wait_type;
477 __le16 rl_namelen;
478 char rl_name[DLM_RESNAME_MAXLEN];
479 char rl_lvb[0];
480 };
481
482 struct dlm_ls {
483 struct list_head ls_list; /* list of lockspaces */
484 dlm_lockspace_t *ls_local_handle;
485 uint32_t ls_global_id; /* global unique lockspace ID */
486 uint32_t ls_generation;
487 uint32_t ls_exflags;
488 int ls_lvblen;
489 int ls_count; /* refcount of processes in
490 the dlm using this ls */
491 int ls_create_count; /* create/release refcount */
492 unsigned long ls_flags; /* LSFL_ */
493 unsigned long ls_scan_time;
494 struct kobject ls_kobj;
495
496 struct idr ls_lkbidr;
497 spinlock_t ls_lkbidr_spin;
498
499 struct dlm_rsbtable *ls_rsbtbl;
500 uint32_t ls_rsbtbl_size;
501
502 struct dlm_dirtable *ls_dirtbl;
503 uint32_t ls_dirtbl_size;
504
505 struct mutex ls_waiters_mutex;
506 struct list_head ls_waiters; /* lkbs needing a reply */
507
508 struct mutex ls_orphans_mutex;
509 struct list_head ls_orphans;
510
511 struct mutex ls_timeout_mutex;
512 struct list_head ls_timeout;
513
514 spinlock_t ls_new_rsb_spin;
515 int ls_new_rsb_count;
516 struct list_head ls_new_rsb; /* new rsb structs */
517
518 struct list_head ls_nodes; /* current nodes in ls */
519 struct list_head ls_nodes_gone; /* dead node list, recovery */
520 int ls_num_nodes; /* number of nodes in ls */
521 int ls_low_nodeid;
522 int ls_total_weight;
523 int *ls_node_array;
524
525 int ls_slot;
526 int ls_num_slots;
527 int ls_slots_size;
528 struct dlm_slot *ls_slots;
529
530 struct dlm_rsb ls_stub_rsb; /* for returning errors */
531 struct dlm_lkb ls_stub_lkb; /* for returning errors */
532 struct dlm_message ls_stub_ms; /* for faking a reply */
533
534 struct dentry *ls_debug_rsb_dentry; /* debugfs */
535 struct dentry *ls_debug_waiters_dentry; /* debugfs */
536 struct dentry *ls_debug_locks_dentry; /* debugfs */
537 struct dentry *ls_debug_all_dentry; /* debugfs */
538
539 wait_queue_head_t ls_uevent_wait; /* user part of join/leave */
540 int ls_uevent_result;
541 struct completion ls_members_done;
542 int ls_members_result;
543
544 struct miscdevice ls_device;
545
546 struct workqueue_struct *ls_callback_wq;
547
548 /* recovery related */
549
550 struct mutex ls_cb_mutex;
551 struct list_head ls_cb_delay; /* save for queue_work later */
552 struct timer_list ls_timer;
553 struct task_struct *ls_recoverd_task;
554 struct mutex ls_recoverd_active;
555 spinlock_t ls_recover_lock;
556 unsigned long ls_recover_begin; /* jiffies timestamp */
557 uint32_t ls_recover_status; /* DLM_RS_ */
558 uint64_t ls_recover_seq;
559 struct dlm_recover *ls_recover_args;
560 struct rw_semaphore ls_in_recovery; /* block local requests */
561 struct rw_semaphore ls_recv_active; /* block dlm_recv */
562 struct list_head ls_requestqueue;/* queue remote requests */
563 struct mutex ls_requestqueue_mutex;
564 struct dlm_rcom *ls_recover_buf;
565 int ls_recover_nodeid; /* for debugging */
566 uint64_t ls_rcom_seq;
567 spinlock_t ls_rcom_spin;
568 struct list_head ls_recover_list;
569 spinlock_t ls_recover_list_lock;
570 int ls_recover_list_count;
571 wait_queue_head_t ls_wait_general;
572 struct mutex ls_clear_proc_locks;
573
574 struct list_head ls_root_list; /* root resources */
575 struct rw_semaphore ls_root_sem; /* protect root_list */
576
577 const struct dlm_lockspace_ops *ls_ops;
578 void *ls_ops_arg;
579
580 int ls_namelen;
581 char ls_name[1];
582 };
583
584 #define LSFL_WORK 0
585 #define LSFL_RUNNING 1
586 #define LSFL_RECOVERY_STOP 2
587 #define LSFL_RCOM_READY 3
588 #define LSFL_RCOM_WAIT 4
589 #define LSFL_UEVENT_WAIT 5
590 #define LSFL_TIMEWARN 6
591 #define LSFL_CB_DELAY 7
592
593 /* much of this is just saving user space pointers associated with the
594 lock that we pass back to the user lib with an ast */
595
596 struct dlm_user_args {
597 struct dlm_user_proc *proc; /* each process that opens the lockspace
598 device has private data
599 (dlm_user_proc) on the struct file,
600 the process's locks point back to it*/
601 struct dlm_lksb lksb;
602 struct dlm_lksb __user *user_lksb;
603 void __user *castparam;
604 void __user *castaddr;
605 void __user *bastparam;
606 void __user *bastaddr;
607 uint64_t xid;
608 };
609
610 #define DLM_PROC_FLAGS_CLOSING 1
611 #define DLM_PROC_FLAGS_COMPAT 2
612
613 /* locks list is kept so we can remove all a process's locks when it
614 exits (or orphan those that are persistent) */
615
616 struct dlm_user_proc {
617 dlm_lockspace_t *lockspace;
618 unsigned long flags; /* DLM_PROC_FLAGS */
619 struct list_head asts;
620 spinlock_t asts_spin;
621 struct list_head locks;
622 spinlock_t locks_spin;
623 struct list_head unlocking;
624 wait_queue_head_t wait;
625 };
626
dlm_locking_stopped(struct dlm_ls * ls)627 static inline int dlm_locking_stopped(struct dlm_ls *ls)
628 {
629 return !test_bit(LSFL_RUNNING, &ls->ls_flags);
630 }
631
dlm_recovery_stopped(struct dlm_ls * ls)632 static inline int dlm_recovery_stopped(struct dlm_ls *ls)
633 {
634 return test_bit(LSFL_RECOVERY_STOP, &ls->ls_flags);
635 }
636
dlm_no_directory(struct dlm_ls * ls)637 static inline int dlm_no_directory(struct dlm_ls *ls)
638 {
639 return (ls->ls_exflags & DLM_LSFL_NODIR) ? 1 : 0;
640 }
641
642 int dlm_netlink_init(void);
643 void dlm_netlink_exit(void);
644 void dlm_timeout_warn(struct dlm_lkb *lkb);
645 int dlm_plock_init(void);
646 void dlm_plock_exit(void);
647
648 #ifdef CONFIG_DLM_DEBUG
649 int dlm_register_debugfs(void);
650 void dlm_unregister_debugfs(void);
651 int dlm_create_debug_file(struct dlm_ls *ls);
652 void dlm_delete_debug_file(struct dlm_ls *ls);
653 #else
dlm_register_debugfs(void)654 static inline int dlm_register_debugfs(void) { return 0; }
dlm_unregister_debugfs(void)655 static inline void dlm_unregister_debugfs(void) { }
dlm_create_debug_file(struct dlm_ls * ls)656 static inline int dlm_create_debug_file(struct dlm_ls *ls) { return 0; }
dlm_delete_debug_file(struct dlm_ls * ls)657 static inline void dlm_delete_debug_file(struct dlm_ls *ls) { }
658 #endif
659
660 #endif /* __DLM_INTERNAL_DOT_H__ */
661
662