1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /******************************************************************************
3 *******************************************************************************
5 ** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
6 ** Copyright (C) 2004-2011 Red Hat, Inc. All rights reserved.
9 *******************************************************************************
10 ******************************************************************************/
12 #ifndef __DLM_INTERNAL_DOT_H__
13 #define __DLM_INTERNAL_DOT_H__
16 * This is the main header file to be included in each DLM source file.
19 #include <linux/slab.h>
20 #include <linux/sched.h>
21 #include <linux/types.h>
22 #include <linux/ctype.h>
23 #include <linux/spinlock.h>
24 #include <linux/vmalloc.h>
25 #include <linux/list.h>
26 #include <linux/errno.h>
27 #include <linux/random.h>
28 #include <linux/delay.h>
29 #include <linux/socket.h>
30 #include <linux/kthread.h>
31 #include <linux/kobject.h>
32 #include <linux/kref.h>
33 #include <linux/kernel.h>
34 #include <linux/jhash.h>
35 #include <linux/miscdevice.h>
36 #include <linux/mutex.h>
37 #include <linux/idr.h>
38 #include <linux/ratelimit.h>
39 #include <linux/uaccess.h>
41 #include <linux/dlm.h>
56 #define log_print(fmt, args...) \
57 printk(KERN_ERR "dlm: "fmt"\n" , ##args)
58 #define log_print_ratelimited(fmt, args...) \
59 printk_ratelimited(KERN_ERR "dlm: "fmt"\n", ##args)
60 #define log_error(ls, fmt, args...) \
61 printk(KERN_ERR "dlm: %s: " fmt "\n", (ls)->ls_name , ##args)
63 #define log_rinfo(ls, fmt, args...) \
65 if (dlm_config.ci_log_info) \
66 printk(KERN_INFO "dlm: %s: " fmt "\n", \
67 (ls)->ls_name, ##args); \
68 else if (dlm_config.ci_log_debug) \
69 printk(KERN_DEBUG "dlm: %s: " fmt "\n", \
70 (ls)->ls_name , ##args); \
73 #define log_debug(ls, fmt, args...) \
75 if (dlm_config.ci_log_debug) \
76 printk(KERN_DEBUG "dlm: %s: " fmt "\n", \
77 (ls)->ls_name , ##args); \
80 #define log_limit(ls, fmt, args...) \
82 if (dlm_config.ci_log_debug) \
83 printk_ratelimited(KERN_DEBUG "dlm: %s: " fmt "\n", \
84 (ls)->ls_name , ##args); \
87 #define DLM_ASSERT(x, do) \
91 printk(KERN_ERR "\nDLM: Assertion failed on line %d of file %s\n" \
92 "DLM: assertion: \"%s\"\n" \
93 "DLM: time = %lu\n", \
94 __LINE__, __FILE__, #x, jiffies); \
97 panic("DLM: Record message above and reboot.\n"); \
102 #define DLM_RTF_SHRINK_BIT 0
104 struct dlm_rsbtable
{
113 * Lockspace member (per node in a ls)
117 struct list_head list
;
127 * Save and manage recovery state for a lockspace.
131 struct list_head list
;
132 struct dlm_config_node
*nodes
;
138 * Pass input args to second stage locking function.
143 void (*astfn
) (void *astparam
);
145 void (*bastfn
) (void *astparam
, int mode
);
147 struct dlm_lksb
*lksb
;
154 * A lock can be one of three types:
156 * local copy lock is mastered locally
157 * (lkb_nodeid is zero and DLM_LKF_MSTCPY is not set)
158 * process copy lock is mastered on a remote node
159 * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is not set)
160 * master copy master node's copy of a lock owned by remote node
161 * (lkb_nodeid is non-zero and DLM_LKF_MSTCPY is set)
163 * lkb_exflags: a copy of the most recent flags arg provided to dlm_lock or
164 * dlm_unlock. The dlm does not modify these or use any private flags in
165 * this field; it only contains DLM_LKF_ flags from dlm.h. These flags
166 * are sent as-is to the remote master when the lock is remote.
168 * lkb_flags: internal dlm flags (DLM_IFL_ prefix) from dlm_internal.h.
169 * Some internal flags are shared between the master and process nodes;
170 * these shared flags are kept in the lower two bytes. One of these
171 * flags set on the master copy will be propagated to the process copy
172 * and v.v. Other internal flags are private to the master or process
173 * node (e.g. DLM_IFL_MSTCPY). These are kept in the high two bytes.
175 * lkb_sbflags: status block flags. These flags are copied directly into
176 * the caller's lksb.sb_flags prior to the dlm_lock/dlm_unlock completion
177 * ast. All defined in dlm.h with DLM_SBF_ prefix.
179 * lkb_status: the lock status indicates which rsb queue the lock is
180 * on, grant, convert, or wait. DLM_LKSTS_ WAITING/GRANTED/CONVERT
182 * lkb_wait_type: the dlm message type (DLM_MSG_ prefix) for which a
183 * reply is needed. Only set when the lkb is on the lockspace waiters
184 * list awaiting a reply from a remote node.
186 * lkb_nodeid: when the lkb is a local copy, nodeid is 0; when the lkb
187 * is a master copy, nodeid specifies the remote lock holder, when the
188 * lkb is a process copy, the nodeid specifies the lock master.
193 #define DLM_LKSTS_WAITING 1
194 #define DLM_LKSTS_GRANTED 2
195 #define DLM_LKSTS_CONVERT 3
199 #define DLM_IFL_MSTCPY_BIT 16
200 #define __DLM_IFL_MIN_BIT DLM_IFL_MSTCPY_BIT
201 #define DLM_IFL_RESEND_BIT 17
202 #define DLM_IFL_DEAD_BIT 18
203 #define DLM_IFL_OVERLAP_UNLOCK_BIT 19
204 #define DLM_IFL_OVERLAP_CANCEL_BIT 20
205 #define DLM_IFL_ENDOFLIFE_BIT 21
206 #define DLM_IFL_DEADLOCK_CANCEL_BIT 24
207 #define DLM_IFL_CB_PENDING_BIT 25
208 #define __DLM_IFL_MAX_BIT DLM_IFL_CB_PENDING_BIT
212 #define DLM_DFL_USER_BIT 0
213 #define __DLM_DFL_MIN_BIT DLM_DFL_USER_BIT
214 #define DLM_DFL_ORPHAN_BIT 1
215 #define __DLM_DFL_MAX_BIT DLM_DFL_ORPHAN_BIT
217 #define DLM_CB_CAST 0x00000001
218 #define DLM_CB_BAST 0x00000002
220 struct dlm_callback
{
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 */
226 struct list_head list
;
231 struct dlm_rsb
*lkb_resource
; /* the rsb */
233 int lkb_nodeid
; /* copied from rsb */
234 int lkb_ownpid
; /* pid of lock owner */
235 uint32_t lkb_id
; /* our lock ID */
236 uint32_t lkb_remid
; /* lock ID on remote partner */
237 uint32_t lkb_exflags
; /* external flags from caller */
238 unsigned long lkb_sbflags
; /* lksb flags */
239 unsigned long lkb_dflags
; /* distributed flags */
240 unsigned long lkb_iflags
; /* internal flags */
241 uint32_t lkb_lvbseq
; /* lvb sequence number */
243 int8_t lkb_status
; /* granted, waiting, convert */
244 int8_t lkb_rqmode
; /* requested lock mode */
245 int8_t lkb_grmode
; /* granted lock mode */
246 int8_t lkb_highbast
; /* highest mode bast sent for */
248 int8_t lkb_wait_type
; /* type of reply waiting for */
249 atomic_t lkb_wait_count
;
250 int lkb_wait_nodeid
; /* for debugging */
252 struct list_head lkb_statequeue
; /* rsb g/c/w list */
253 struct list_head lkb_rsb_lookup
; /* waiting for rsb lookup */
254 struct list_head lkb_wait_reply
; /* waiting for remote reply */
255 struct list_head lkb_ownqueue
; /* list of locks for a process */
256 ktime_t lkb_timestamp
;
258 spinlock_t lkb_cb_lock
;
259 struct work_struct lkb_cb_work
;
260 struct list_head lkb_cb_list
; /* for ls_cb_delay or proc->asts */
261 struct list_head lkb_callbacks
;
262 struct dlm_callback
*lkb_last_cast
;
263 struct dlm_callback
*lkb_last_cb
;
264 int lkb_last_bast_mode
;
265 ktime_t lkb_last_cast_time
; /* for debugging */
266 ktime_t lkb_last_bast_time
; /* for debugging */
268 uint64_t lkb_recover_seq
; /* from ls_recover_seq */
271 struct dlm_lksb
*lkb_lksb
; /* caller's status block */
272 void (*lkb_astfn
) (void *astparam
);
273 void (*lkb_bastfn
) (void *astparam
, int mode
);
275 void *lkb_astparam
; /* caller's ast arg */
276 struct dlm_user_args
*lkb_ua
;
281 * res_master_nodeid is "normal": 0 is unset/invalid, non-zero is the real
282 * nodeid, even when nodeid is our_nodeid.
284 * res_nodeid is "odd": -1 is unset/invalid, zero means our_nodeid,
285 * greater than zero when another nodeid.
287 * (TODO: remove res_nodeid and only use res_master_nodeid)
291 struct dlm_ls
*res_ls
; /* the lockspace */
293 struct mutex res_mutex
;
294 unsigned long res_flags
;
295 int res_length
; /* length of rsb name */
297 int res_master_nodeid
;
299 int res_id
; /* for ls_recover_idr */
302 uint32_t res_bucket
; /* rsbtbl */
303 unsigned long res_toss_time
;
304 uint32_t res_first_lkid
;
305 struct list_head res_lookup
; /* lkbs waiting on first */
307 struct list_head res_hashchain
;
308 struct rb_node res_hashnode
; /* rsbtbl */
310 struct list_head res_grantqueue
;
311 struct list_head res_convertqueue
;
312 struct list_head res_waitqueue
;
314 struct list_head res_root_list
; /* used for recovery */
315 struct list_head res_recover_list
; /* used for recovery */
316 int res_recover_locks_count
;
319 char res_name
[DLM_RESNAME_MAXLEN
+1];
322 /* dlm_master_lookup() flags */
324 #define DLM_LU_RECOVER_DIR 1
325 #define DLM_LU_RECOVER_MASTER 2
327 /* dlm_master_lookup() results */
329 #define DLM_LU_MATCH 1
332 /* find_rsb() flags */
334 #define R_REQUEST 0x00000001
335 #define R_RECEIVE_REQUEST 0x00000002
336 #define R_RECEIVE_RECOVER 0x00000004
341 RSB_MASTER_UNCERTAIN
,
343 RSB_VALNOTVALID_PREV
,
348 RSB_RECOVER_LVB_INVAL
,
351 static inline void rsb_set_flag(struct dlm_rsb
*r
, enum rsb_flags flag
)
353 __set_bit(flag
, &r
->res_flags
);
356 static inline void rsb_clear_flag(struct dlm_rsb
*r
, enum rsb_flags flag
)
358 __clear_bit(flag
, &r
->res_flags
);
361 static inline int rsb_flag(struct dlm_rsb
*r
, enum rsb_flags flag
)
363 return test_bit(flag
, &r
->res_flags
);
367 /* dlm_header is first element of all structs sent between nodes */
369 #define DLM_HEADER_MAJOR 0x00030000
370 #define DLM_HEADER_MINOR 0x00000002
372 #define DLM_VERSION_3_1 0x00030001
373 #define DLM_VERSION_3_2 0x00030002
375 #define DLM_HEADER_SLOTS 0x00000001
386 /* for DLM_MSG and DLM_RCOM */
388 /* for DLM_ACK and DLM_OPTS */
391 __le32 h_nodeid
; /* nodeid of sender */
393 uint8_t h_cmd
; /* DLM_MSG, DLM_RCOM */
397 #define DLM_MSG_REQUEST 1
398 #define DLM_MSG_CONVERT 2
399 #define DLM_MSG_UNLOCK 3
400 #define DLM_MSG_CANCEL 4
401 #define DLM_MSG_REQUEST_REPLY 5
402 #define DLM_MSG_CONVERT_REPLY 6
403 #define DLM_MSG_UNLOCK_REPLY 7
404 #define DLM_MSG_CANCEL_REPLY 8
405 #define DLM_MSG_GRANT 9
406 #define DLM_MSG_BAST 10
407 #define DLM_MSG_LOOKUP 11
408 #define DLM_MSG_REMOVE 12
409 #define DLM_MSG_LOOKUP_REPLY 13
410 #define DLM_MSG_PURGE 14
413 struct dlm_header m_header
;
414 __le32 m_type
; /* DLM_MSG_ */
417 __le32 m_lkid
; /* lkid on sender */
418 __le32 m_remid
; /* lkid on receiver */
419 __le32 m_parent_lkid
;
420 __le32 m_parent_remid
;
431 __le32 m_result
; /* 0 or -EXXX */
432 char m_extra
[]; /* name or lvb */
436 #define DLM_RS_NODES 0x00000001
437 #define DLM_RS_NODES_ALL 0x00000002
438 #define DLM_RS_DIR 0x00000004
439 #define DLM_RS_DIR_ALL 0x00000008
440 #define DLM_RS_LOCKS 0x00000010
441 #define DLM_RS_LOCKS_ALL 0x00000020
442 #define DLM_RS_DONE 0x00000040
443 #define DLM_RS_DONE_ALL 0x00000080
445 #define DLM_RCOM_STATUS 1
446 #define DLM_RCOM_NAMES 2
447 #define DLM_RCOM_LOOKUP 3
448 #define DLM_RCOM_LOCK 4
449 #define DLM_RCOM_STATUS_REPLY 5
450 #define DLM_RCOM_NAMES_REPLY 6
451 #define DLM_RCOM_LOOKUP_REPLY 7
452 #define DLM_RCOM_LOCK_REPLY 8
455 struct dlm_header rc_header
;
456 __le32 rc_type
; /* DLM_RCOM_ */
457 __le32 rc_result
; /* multi-purpose */
458 __le64 rc_id
; /* match reply with request */
459 __le64 rc_seq
; /* sender's ls_recover_seq */
460 __le64 rc_seq_reply
; /* remote ls_recover_seq */
464 struct dlm_opt_header
{
468 /* need to be 8 byte aligned */
472 /* encapsulation header */
474 struct dlm_header o_header
;
483 struct dlm_header header
; /* common to other two */
484 struct dlm_message message
;
485 struct dlm_rcom rcom
;
486 struct dlm_opts opts
;
489 #define DLM_RSF_NEED_SLOTS 0x00000001
491 /* RCOM_STATUS data */
498 /* RCOM_STATUS_REPLY data */
503 /* DLM_HEADER_SLOTS adds: */
507 __le32 rf_generation
;
523 __le32 rl_parent_lkid
;
524 __le32 rl_parent_remid
;
535 char rl_name
[DLM_RESNAME_MAXLEN
];
540 * The max number of resources per rsbtbl bucket that shrink will attempt
541 * to remove in each iteration.
544 #define DLM_REMOVE_NAMES_MAX 8
547 struct list_head ls_list
; /* list of lockspaces */
548 dlm_lockspace_t
*ls_local_handle
;
549 uint32_t ls_global_id
; /* global unique lockspace ID */
550 uint32_t ls_generation
;
553 atomic_t ls_count
; /* refcount of processes in
554 the dlm using this ls */
555 wait_queue_head_t ls_count_wait
;
556 int ls_create_count
; /* create/release refcount */
557 unsigned long ls_flags
; /* LSFL_ */
558 unsigned long ls_scan_time
;
559 struct kobject ls_kobj
;
561 struct idr ls_lkbidr
;
562 spinlock_t ls_lkbidr_spin
;
564 struct dlm_rsbtable
*ls_rsbtbl
;
565 uint32_t ls_rsbtbl_size
;
567 struct mutex ls_waiters_mutex
;
568 struct list_head ls_waiters
; /* lkbs needing a reply */
570 struct mutex ls_orphans_mutex
;
571 struct list_head ls_orphans
;
573 spinlock_t ls_new_rsb_spin
;
574 int ls_new_rsb_count
;
575 struct list_head ls_new_rsb
; /* new rsb structs */
577 char *ls_remove_names
[DLM_REMOVE_NAMES_MAX
];
578 int ls_remove_lens
[DLM_REMOVE_NAMES_MAX
];
580 struct list_head ls_nodes
; /* current nodes in ls */
581 struct list_head ls_nodes_gone
; /* dead node list, recovery */
582 int ls_num_nodes
; /* number of nodes in ls */
590 struct dlm_slot
*ls_slots
;
592 struct dlm_rsb ls_local_rsb
; /* for returning errors */
593 struct dlm_lkb ls_local_lkb
; /* for returning errors */
594 struct dlm_message ls_local_ms
; /* for faking a reply */
596 struct dentry
*ls_debug_rsb_dentry
; /* debugfs */
597 struct dentry
*ls_debug_waiters_dentry
; /* debugfs */
598 struct dentry
*ls_debug_locks_dentry
; /* debugfs */
599 struct dentry
*ls_debug_all_dentry
; /* debugfs */
600 struct dentry
*ls_debug_toss_dentry
; /* debugfs */
601 struct dentry
*ls_debug_queued_asts_dentry
; /* debugfs */
603 wait_queue_head_t ls_uevent_wait
; /* user part of join/leave */
604 int ls_uevent_result
;
605 struct completion ls_recovery_done
;
606 int ls_recovery_result
;
608 struct miscdevice ls_device
;
610 struct workqueue_struct
*ls_callback_wq
;
612 /* recovery related */
614 spinlock_t ls_cb_lock
;
615 struct list_head ls_cb_delay
; /* save for queue_work later */
616 struct timer_list ls_timer
;
617 struct task_struct
*ls_recoverd_task
;
618 struct mutex ls_recoverd_active
;
619 spinlock_t ls_recover_lock
;
620 unsigned long ls_recover_begin
; /* jiffies timestamp */
621 uint32_t ls_recover_status
; /* DLM_RS_ */
622 uint64_t ls_recover_seq
;
623 struct dlm_recover
*ls_recover_args
;
624 struct rw_semaphore ls_in_recovery
; /* block local requests */
625 struct rw_semaphore ls_recv_active
; /* block dlm_recv */
626 struct list_head ls_requestqueue
;/* queue remote requests */
627 atomic_t ls_requestqueue_cnt
;
628 wait_queue_head_t ls_requestqueue_wait
;
629 struct mutex ls_requestqueue_mutex
;
630 struct dlm_rcom
*ls_recover_buf
;
631 int ls_recover_nodeid
; /* for debugging */
632 unsigned int ls_recover_dir_sent_res
; /* for log info */
633 unsigned int ls_recover_dir_sent_msg
; /* for log info */
634 unsigned int ls_recover_locks_in
; /* for log info */
635 uint64_t ls_rcom_seq
;
636 spinlock_t ls_rcom_spin
;
637 struct list_head ls_recover_list
;
638 spinlock_t ls_recover_list_lock
;
639 int ls_recover_list_count
;
640 struct idr ls_recover_idr
;
641 spinlock_t ls_recover_idr_lock
;
642 wait_queue_head_t ls_wait_general
;
643 wait_queue_head_t ls_recover_lock_wait
;
644 spinlock_t ls_clear_proc_locks
;
646 struct list_head ls_root_list
; /* root resources */
647 struct rw_semaphore ls_root_sem
; /* protect root_list */
649 const struct dlm_lockspace_ops
*ls_ops
;
653 char ls_name
[DLM_LOCKSPACE_LEN
+ 1];
657 * LSFL_RECOVER_STOP - dlm_ls_stop() sets this to tell dlm recovery routines
658 * that they should abort what they're doing so new recovery can be started.
660 * LSFL_RECOVER_DOWN - dlm_ls_stop() sets this to tell dlm_recoverd that it
661 * should do down_write() on the in_recovery rw_semaphore. (doing down_write
662 * within dlm_ls_stop causes complaints about the lock acquired/released
663 * in different contexts.)
665 * LSFL_RECOVER_LOCK - dlm_recoverd holds the in_recovery rw_semaphore.
666 * It sets this after it is done with down_write() on the in_recovery
667 * rw_semaphore and clears it after it has released the rw_semaphore.
669 * LSFL_RECOVER_WORK - dlm_ls_start() sets this to tell dlm_recoverd that it
670 * should begin recovery of the lockspace.
672 * LSFL_RUNNING - set when normal locking activity is enabled.
673 * dlm_ls_stop() clears this to tell dlm locking routines that they should
674 * quit what they are doing so recovery can run. dlm_recoverd sets
675 * this after recovery is finished.
678 #define LSFL_RECOVER_STOP 0
679 #define LSFL_RECOVER_DOWN 1
680 #define LSFL_RECOVER_LOCK 2
681 #define LSFL_RECOVER_WORK 3
682 #define LSFL_RUNNING 4
684 #define LSFL_RCOM_READY 5
685 #define LSFL_RCOM_WAIT 6
686 #define LSFL_UEVENT_WAIT 7
687 #define LSFL_CB_DELAY 9
688 #define LSFL_NODIR 10
690 /* much of this is just saving user space pointers associated with the
691 lock that we pass back to the user lib with an ast */
693 struct dlm_user_args
{
694 struct dlm_user_proc
*proc
; /* each process that opens the lockspace
695 device has private data
696 (dlm_user_proc) on the struct file,
697 the process's locks point back to it*/
698 struct dlm_lksb lksb
;
699 struct dlm_lksb __user
*user_lksb
;
700 void __user
*castparam
;
701 void __user
*castaddr
;
702 void __user
*bastparam
;
703 void __user
*bastaddr
;
707 #define DLM_PROC_FLAGS_CLOSING 1
708 #define DLM_PROC_FLAGS_COMPAT 2
710 /* locks list is kept so we can remove all a process's locks when it
711 exits (or orphan those that are persistent) */
713 struct dlm_user_proc
{
714 dlm_lockspace_t
*lockspace
;
715 unsigned long flags
; /* DLM_PROC_FLAGS */
716 struct list_head asts
;
717 spinlock_t asts_spin
;
718 struct list_head locks
;
719 spinlock_t locks_spin
;
720 struct list_head unlocking
;
721 wait_queue_head_t wait
;
724 static inline int dlm_locking_stopped(struct dlm_ls
*ls
)
726 return !test_bit(LSFL_RUNNING
, &ls
->ls_flags
);
729 static inline int dlm_recovery_stopped(struct dlm_ls
*ls
)
731 return test_bit(LSFL_RECOVER_STOP
, &ls
->ls_flags
);
734 static inline int dlm_no_directory(struct dlm_ls
*ls
)
736 return test_bit(LSFL_NODIR
, &ls
->ls_flags
);
739 /* takes a snapshot from dlm atomic flags */
740 static inline uint32_t dlm_flags_val(const unsigned long *addr
,
741 uint32_t min
, uint32_t max
)
743 uint32_t bit
= min
, val
= 0;
745 for_each_set_bit_from(bit
, addr
, max
+ 1) {
752 static inline uint32_t dlm_iflags_val(const struct dlm_lkb
*lkb
)
754 return dlm_flags_val(&lkb
->lkb_iflags
, __DLM_IFL_MIN_BIT
,
758 static inline uint32_t dlm_dflags_val(const struct dlm_lkb
*lkb
)
760 return dlm_flags_val(&lkb
->lkb_dflags
, __DLM_DFL_MIN_BIT
,
764 /* coming from UAPI header
767 * Move this to UAPI header and let other values point to them and use BIT()
769 #define DLM_SBF_DEMOTED_BIT 0
770 #define __DLM_SBF_MIN_BIT DLM_SBF_DEMOTED_BIT
771 #define DLM_SBF_VALNOTVALID_BIT 1
772 #define DLM_SBF_ALTMODE_BIT 2
773 #define __DLM_SBF_MAX_BIT DLM_SBF_ALTMODE_BIT
775 static inline uint32_t dlm_sbflags_val(const struct dlm_lkb
*lkb
)
777 /* be sure the next person updates this */
778 BUILD_BUG_ON(BIT(__DLM_SBF_MAX_BIT
) != DLM_SBF_ALTMODE
);
780 return dlm_flags_val(&lkb
->lkb_sbflags
, __DLM_SBF_MIN_BIT
,
784 static inline void dlm_set_flags_val(unsigned long *addr
, uint32_t val
,
785 uint32_t min
, uint32_t max
)
789 for (bit
= min
; bit
< (max
+ 1); bit
++) {
793 clear_bit(bit
, addr
);
797 static inline void dlm_set_dflags_val(struct dlm_lkb
*lkb
, uint32_t val
)
799 dlm_set_flags_val(&lkb
->lkb_dflags
, val
, __DLM_DFL_MIN_BIT
,
803 static inline void dlm_set_sbflags_val(struct dlm_lkb
*lkb
, uint32_t val
)
805 dlm_set_flags_val(&lkb
->lkb_sbflags
, val
, __DLM_SBF_MIN_BIT
,
809 int dlm_plock_init(void);
810 void dlm_plock_exit(void);
812 #ifdef CONFIG_DLM_DEBUG
813 void dlm_register_debugfs(void);
814 void dlm_unregister_debugfs(void);
815 void dlm_create_debug_file(struct dlm_ls
*ls
);
816 void dlm_delete_debug_file(struct dlm_ls
*ls
);
817 void *dlm_create_debug_comms_file(int nodeid
, void *data
);
818 void dlm_delete_debug_comms_file(void *ctx
);
820 static inline void dlm_register_debugfs(void) { }
821 static inline void dlm_unregister_debugfs(void) { }
822 static inline void dlm_create_debug_file(struct dlm_ls
*ls
) { }
823 static inline void dlm_delete_debug_file(struct dlm_ls
*ls
) { }
824 static inline void *dlm_create_debug_comms_file(int nodeid
, void *data
) { return NULL
; }
825 static inline void dlm_delete_debug_comms_file(void *ctx
) { }
828 #endif /* __DLM_INTERNAL_DOT_H__ */