1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * (visit-tags-table FILE)
3 * vim:expandtab:shiftwidth=8:tabstop=8:
6 #ifndef _LUSTRE_DLM_H__
7 #define _LUSTRE_DLM_H__
10 # include <linux/proc_fs.h>
13 #include <linux/lustre_lib.h>
14 #include <linux/lustre_net.h>
15 #include <linux/lustre_import.h>
16 #include <linux/lustre_handles.h>
17 #include <linux/lustre_export.h> /* for obd_export, for LDLM_DEBUG */
22 #define OBD_LDLM_DEVICENAME "ldlm"
24 #define LDLM_DEFAULT_LRU_SIZE 100
29 ELDLM_LOCK_CHANGED = 300,
30 ELDLM_LOCK_ABORTED = 301,
31 ELDLM_LOCK_REPLACED = 302,
32 ELDLM_NO_LOCK_DATA = 303,
34 ELDLM_NAMESPACE_EXISTS = 400,
35 ELDLM_BAD_NAMESPACE = 401
38 #define LDLM_NAMESPACE_SERVER 0
39 #define LDLM_NAMESPACE_CLIENT 1
41 #define LDLM_FL_LOCK_CHANGED 0x000001 /* extent, mode, or resource changed */
43 /* If the server returns one of these flags, then the lock was put on that list.
44 * If the client sends one of these flags (during recovery ONLY!), it wants the
45 * lock added to the specified list, no questions asked. -p */
46 #define LDLM_FL_BLOCK_GRANTED 0x000002
47 #define LDLM_FL_BLOCK_CONV 0x000004
48 #define LDLM_FL_BLOCK_WAIT 0x000008
50 #define LDLM_FL_CBPENDING 0x000010 /* this lock is being destroyed */
51 #define LDLM_FL_AST_SENT 0x000020 /* blocking or cancel packet was sent */
52 #define LDLM_FL_WAIT_NOREPROC 0x000040 /* not a real flag, not saved in lock */
53 #define LDLM_FL_CANCEL 0x000080 /* cancellation callback already run */
55 /* Lock is being replayed. This could probably be implied by the fact that one
56 * of BLOCK_{GRANTED,CONV,WAIT} is set, but that is pretty dangerous. */
57 #define LDLM_FL_REPLAY 0x000100
59 #define LDLM_FL_INTENT_ONLY 0x000200 /* don't grant lock, just do intent */
60 #define LDLM_FL_LOCAL_ONLY 0x000400 /* see ldlm_cli_cancel_unused */
62 /* don't run the cancel callback under ldlm_cli_cancel_unused */
63 #define LDLM_FL_FAILED 0x000800
65 #define LDLM_FL_HAS_INTENT 0x001000 /* lock request has intent */
66 #define LDLM_FL_CANCELING 0x002000 /* lock cancel has already been sent */
67 #define LDLM_FL_LOCAL 0x004000 /* local lock (ie, no srv/cli split) */
68 #define LDLM_FL_WARN 0x008000 /* see ldlm_cli_cancel_unused */
69 #define LDLM_FL_DISCARD_DATA 0x010000 /* discard (no writeback) on cancel */
70 #define LDLM_FL_CONFIG_CHANGE 0x020000 /* see ldlm_cli_cancel_unused */
72 #define LDLM_FL_NO_TIMEOUT 0x020000 /* Blocked by group lock - wait
75 /* file & record locking */
76 #define LDLM_FL_BLOCK_NOWAIT 0x040000 /* server told not to wait if blocked */
77 #define LDLM_FL_TEST_LOCK 0x080000 /* return blocking lock */
79 /* These are flags that are mapped into the flags and ASTs of blocking locks */
80 #define LDLM_AST_DISCARD_DATA 0x80000000 /* Add FL_DISCARD to blocking ASTs */
81 /* Flags sent in AST lock_flags to be mapped into the receiving lock. */
82 #define LDLM_AST_FLAGS (LDLM_FL_DISCARD_DATA)
84 /* XXX FIXME: This is being added to b_size as a low-risk fix to the fact that
85 * the LVB filling happens _after_ the lock has been granted, so another thread
86 * can match before the LVB has been updated. As a dirty hack, we set
87 * LDLM_FL_CAN_MATCH only after we've done the LVB poop.
89 * The proper fix is to do the granting inside of the completion AST, which can
90 * be replaced with a LVB-aware wrapping function for OSC locks. That change is
91 * pretty high-risk, though, and would need a lot more testing. */
92 #define LDLM_FL_CAN_MATCH 0x100000
94 /* A lock contributes to the kms calculation until it has finished the part
95 * of it's cancelation that performs write back on its dirty pages. It
96 * can remain on the granted list during this whole time. Threads racing
97 * to update the kms after performing their writeback need to know to
98 * exclude each others locks from the calculation as they walk the granted
100 #define LDLM_FL_KMS_IGNORE 0x200000
102 /* completion ast to be executed */
103 #define LDLM_FL_CP_REQD 0x400000
105 /* cleanup_resource has already handled the lock */
106 #define LDLM_FL_CLEANED 0x800000
108 /* optimization hint: LDLM can run blocking callback from current context
109 * w/o involving separate thread. in order to decrease cs rate -bzzz */
110 #define LDLM_FL_ATOMIC_CB 0x1000000
113 /* The blocking callback is overloaded to perform two functions. These flags
114 * indicate which operation should be performed. */
115 #define LDLM_CB_BLOCKING 1
116 #define LDLM_CB_CANCELING 2
118 /* compatibility matrix */
119 #define LCK_COMPAT_EX LCK_NL
120 #define LCK_COMPAT_PW (LCK_COMPAT_EX | LCK_CR)
121 #define LCK_COMPAT_PR (LCK_COMPAT_PW | LCK_PR)
122 #define LCK_COMPAT_CW (LCK_COMPAT_PW | LCK_CW)
123 #define LCK_COMPAT_CR (LCK_COMPAT_CW | LCK_PR | LCK_PW)
124 #define LCK_COMPAT_NL (LCK_COMPAT_CR | LCK_EX)
125 #define LCK_COMPAT_GROUP (LCK_GROUP | LCK_NL)
127 static ldlm_mode_t lck_compat_array[] = {
128 [LCK_EX] LCK_COMPAT_EX,
129 [LCK_PW] LCK_COMPAT_PW,
130 [LCK_PR] LCK_COMPAT_PR,
131 [LCK_CW] LCK_COMPAT_CW,
132 [LCK_CR] LCK_COMPAT_CR,
133 [LCK_NL] LCK_COMPAT_NL,
134 [LCK_GROUP] LCK_COMPAT_GROUP
137 static inline void lockmode_verify(ldlm_mode_t mode)
139 LASSERT(mode >= LCK_EX && mode <= LCK_GROUP);
142 static inline int lockmode_compat(ldlm_mode_t exist, ldlm_mode_t new)
144 return (lck_compat_array[exist] & new);
149 * cluster name spaces
153 #define DLM_OST_NAMESPACE 1
154 #define DLM_MDS_NAMESPACE 2
157 - do we just separate this by security domains and use a prefix for
158 multiple namespaces in the same domain?
168 * waiting_locks_spinlock
182 struct ldlm_resource;
183 struct ldlm_namespace;
185 typedef int (*ldlm_res_policy)(struct ldlm_namespace *, struct ldlm_lock **,
186 void *req_cookie, ldlm_mode_t mode, int flags,
189 struct ldlm_valblock_ops {
190 int (*lvbo_init)(struct ldlm_resource *res);
192 int (*lvbo_update)(struct ldlm_resource *res,
193 struct lustre_msg *m,
194 int buf_idx, int increase);
197 struct ldlm_namespace {
199 __u32 ns_client; /* is this a client-side lock tree? */
200 struct list_head *ns_hash; /* hash table for ns */
201 spinlock_t ns_hash_lock;
202 __u32 ns_refcount; /* count of resources in the hash */
203 struct list_head ns_root_list; /* all root resources in ns */
204 struct list_head ns_list_chain; /* position in global NS list */
206 struct proc_dir_entry *ns_proc_dir;
209 struct list_head ns_unused_list; /* all root resources in ns */
211 spinlock_t ns_unused_lock;
213 unsigned int ns_max_unused;
214 unsigned long ns_next_dump; /* next dump time */
218 ldlm_res_policy ns_policy;
219 struct ldlm_valblock_ops *ns_lvbo;
221 wait_queue_head_t ns_waitq;
226 * Resource hash table
230 #define RES_HASH_BITS 10
231 #define RES_HASH_SIZE (1UL << RES_HASH_BITS)
232 #define RES_HASH_MASK (RES_HASH_SIZE - 1)
236 typedef int (*ldlm_blocking_callback)(struct ldlm_lock *lock,
237 struct ldlm_lock_desc *new, void *data,
239 typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, int flags,
241 typedef int (*ldlm_glimpse_callback)(struct ldlm_lock *lock, void *data);
244 struct portals_handle l_handle; // must be first in the structure
247 /* ldlm_lock_change_resource() can change this */
248 struct ldlm_resource *l_resource;
250 /* set once, no need to protect it */
251 struct ldlm_lock *l_parent;
253 /* protected by ns_hash_lock */
254 struct list_head l_children;
255 struct list_head l_childof;
257 /* protected by ns_hash_lock. FIXME */
258 struct list_head l_lru;
260 /* protected by lr_lock */
261 struct list_head l_res_link; // position in one of three res lists
263 /* protected by led_lock */
264 struct list_head l_export_chain; // per-export chain of locks
266 /* protected by lr_lock */
267 ldlm_mode_t l_req_mode;
268 ldlm_mode_t l_granted_mode;
270 ldlm_completion_callback l_completion_ast;
271 ldlm_blocking_callback l_blocking_ast;
272 ldlm_glimpse_callback l_glimpse_ast;
274 struct obd_export *l_export;
275 struct obd_export *l_conn_export;
277 /* protected by lr_lock */
280 struct lustre_handle l_remote_handle;
281 ldlm_policy_data_t l_policy_data;
283 /* protected by lr_lock */
288 /* If the lock is granted, a process sleeps on this waitq to learn when
289 * it's no longer in use. If the lock is not granted, a process sleeps
290 * on this waitq to learn when it becomes granted. */
291 wait_queue_head_t l_waitq;
292 struct timeval l_enqueued_time;
294 unsigned long l_last_used; /* jiffies */
295 struct ldlm_extent l_req_extent;
297 /* Client-side-only members */
298 __u32 l_lvb_len; /* temporary storage for */
299 void *l_lvb_data; /* an LVB received during */
300 void *l_lvb_swabber; /* an enqueue */
303 /* Server-side-only members */
305 /* protected by elt_lock */
306 struct list_head l_pending_chain; /* callbacks pending */
307 unsigned long l_callback_timeout;
309 __u32 l_pid; /* pid which created this lock */
311 struct list_head l_tmp;
313 /* for ldlm_add_ast_work_item() */
314 struct list_head l_bl_ast;
315 struct list_head l_cp_ast;
316 struct ldlm_lock *l_blocking_lock;
320 #define LDLM_PLAIN 10
321 #define LDLM_EXTENT 11
322 #define LDLM_FLOCK 12
323 #define LDLM_IBITS 13
325 #define LDLM_MIN_TYPE 10
326 #define LDLM_MAX_TYPE 14
328 struct ldlm_resource {
329 struct ldlm_namespace *lr_namespace;
331 /* protected by ns_hash_lock */
332 struct list_head lr_hash;
333 struct ldlm_resource *lr_parent; /* 0 for a root resource */
334 struct list_head lr_children; /* list head for child resources */
335 struct list_head lr_childof; /* part of ns_root_list if root res,
336 * part of lr_children if child */
339 /* protected by lr_lock */
340 struct list_head lr_granted;
341 struct list_head lr_converting;
342 struct list_head lr_waiting;
343 ldlm_mode_t lr_most_restr;
344 __u32 lr_type; /* LDLM_PLAIN or LDLM_EXTENT */
345 struct ldlm_res_id lr_name;
346 atomic_t lr_refcount;
348 /* Server-side-only lock value block elements */
349 struct semaphore lr_lvb_sem;
353 /* lr_tmp holds a list head temporarily, during the building of a work
354 * queue. see ldlm_add_ast_work_item and ldlm_run_ast_work */
358 struct ldlm_ast_work {
359 struct ldlm_lock *w_lock;
361 struct ldlm_lock_desc w_desc;
362 struct list_head w_list;
368 extern struct obd_ops ldlm_obd_ops;
370 extern char *ldlm_lockname[];
371 extern char *ldlm_typename[];
372 extern char *ldlm_it2str(int it);
374 #define __LDLM_DEBUG(level, lock, format, a...) \
376 if (lock->l_resource == NULL) { \
377 CDEBUG(level, "### " format \
378 " ns: \?\? lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "\
379 "res: \?\? rrc=\?\? type: \?\?\? flags: %x remote: " \
380 LPX64" expref: %d pid: %u\n" , ## a, lock, \
381 lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
382 lock->l_readers, lock->l_writers, \
383 ldlm_lockname[lock->l_granted_mode], \
384 ldlm_lockname[lock->l_req_mode], \
385 lock->l_flags, lock->l_remote_handle.cookie, \
387 atomic_read(&lock->l_export->exp_refcount) : -99, \
391 if (lock->l_resource->lr_type == LDLM_EXTENT) { \
392 CDEBUG(level, "### " format \
393 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
394 "res: "LPU64"/"LPU64"/"LPU64" rrc: %d type: %s ["LPU64 \
395 "->"LPU64"] (req "LPU64"->"LPU64") flags: %x remote: " \
396 LPX64" expref: %d pid: %u\n" , ## a, \
397 lock->l_resource->lr_namespace->ns_name, lock, \
398 lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
399 lock->l_readers, lock->l_writers, \
400 ldlm_lockname[lock->l_granted_mode], \
401 ldlm_lockname[lock->l_req_mode], \
402 lock->l_resource->lr_name.name[0], \
403 lock->l_resource->lr_name.name[1], \
404 lock->l_resource->lr_name.name[2], \
405 atomic_read(&lock->l_resource->lr_refcount), \
406 ldlm_typename[lock->l_resource->lr_type], \
407 lock->l_policy_data.l_extent.start, \
408 lock->l_policy_data.l_extent.end, \
409 lock->l_req_extent.start, lock->l_req_extent.end, \
410 lock->l_flags, lock->l_remote_handle.cookie, \
412 atomic_read(&lock->l_export->exp_refcount) : -99, \
416 if (lock->l_resource->lr_type == LDLM_FLOCK) { \
417 CDEBUG(level, "### " format \
418 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
419 "res: "LPU64"/"LPU64"/"LPU64" rrc: %d type: %s pid: " \
420 LPU64" " "["LPU64"->"LPU64"] flags: %x remote: "LPX64 \
421 " expref: %d pid: %u\n" , ## a, \
422 lock->l_resource->lr_namespace->ns_name, lock, \
423 lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
424 lock->l_readers, lock->l_writers, \
425 ldlm_lockname[lock->l_granted_mode], \
426 ldlm_lockname[lock->l_req_mode], \
427 lock->l_resource->lr_name.name[0], \
428 lock->l_resource->lr_name.name[1], \
429 lock->l_resource->lr_name.name[2], \
430 atomic_read(&lock->l_resource->lr_refcount), \
431 ldlm_typename[lock->l_resource->lr_type], \
432 lock->l_policy_data.l_flock.pid, \
433 lock->l_policy_data.l_flock.start, \
434 lock->l_policy_data.l_flock.end, \
435 lock->l_flags, lock->l_remote_handle.cookie, \
437 atomic_read(&lock->l_export->exp_refcount) : -99, \
441 if (lock->l_resource->lr_type == LDLM_IBITS) { \
442 CDEBUG(level, "### " format \
443 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
444 "res: "LPU64"/"LPU64"/"LPU64" bits "LPX64" rrc: %d " \
445 "type: %s flags: %x remote: "LPX64" expref: %d " \
447 lock->l_resource->lr_namespace->ns_name, \
448 lock, lock->l_handle.h_cookie, \
449 atomic_read (&lock->l_refc), \
450 lock->l_readers, lock->l_writers, \
451 ldlm_lockname[lock->l_granted_mode], \
452 ldlm_lockname[lock->l_req_mode], \
453 lock->l_resource->lr_name.name[0], \
454 lock->l_resource->lr_name.name[1], \
455 lock->l_resource->lr_name.name[2], \
456 lock->l_policy_data.l_inodebits.bits, \
457 atomic_read(&lock->l_resource->lr_refcount), \
458 ldlm_typename[lock->l_resource->lr_type], \
459 lock->l_flags, lock->l_remote_handle.cookie, \
461 atomic_read(&lock->l_export->exp_refcount) : -99, \
466 CDEBUG(level, "### " format \
467 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
468 "res: "LPU64"/"LPU64"/"LPU64"/"LPU64" rrc: %d type: %s " \
469 "flags: %x remote: "LPX64" expref: %d " \
470 "pid: %u\n" , ## a, \
471 lock->l_resource->lr_namespace->ns_name, \
472 lock, lock->l_handle.h_cookie, \
473 atomic_read (&lock->l_refc), \
474 lock->l_readers, lock->l_writers, \
475 ldlm_lockname[lock->l_granted_mode], \
476 ldlm_lockname[lock->l_req_mode], \
477 lock->l_resource->lr_name.name[0], \
478 lock->l_resource->lr_name.name[1], \
479 lock->l_resource->lr_name.name[2], \
480 lock->l_resource->lr_name.name[3], \
481 atomic_read(&lock->l_resource->lr_refcount), \
482 ldlm_typename[lock->l_resource->lr_type], \
483 lock->l_flags, lock->l_remote_handle.cookie, \
485 atomic_read(&lock->l_export->exp_refcount) : -99, \
490 #define LDLM_DEBUG(lock, format, a...) __LDLM_DEBUG(D_DLMTRACE, lock, \
492 #define LDLM_ERROR(lock, format, a...) __LDLM_DEBUG(D_ERROR, lock, format, ## a)
494 #define LDLM_DEBUG_NOLOCK(format, a...) \
495 CDEBUG(D_DLMTRACE, "### " format "\n" , ## a)
497 typedef int (*ldlm_processing_policy)(struct ldlm_lock *lock, int *flags,
498 int first_enq, ldlm_error_t *err,
499 struct list_head *work_list);
505 #define LDLM_ITER_CONTINUE 1 /* keep iterating */
506 #define LDLM_ITER_STOP 2 /* stop iterating */
508 typedef int (*ldlm_iterator_t)(struct ldlm_lock *, void *);
509 typedef int (*ldlm_res_iterator_t)(struct ldlm_resource *, void *);
511 int ldlm_resource_foreach(struct ldlm_resource *res, ldlm_iterator_t iter,
513 int ldlm_namespace_foreach(struct ldlm_namespace *ns, ldlm_iterator_t iter,
515 int ldlm_namespace_foreach_res(struct ldlm_namespace *ns,
516 ldlm_res_iterator_t iter, void *closure);
518 int ldlm_replay_locks(struct obd_import *imp);
519 void ldlm_change_cbdata(struct ldlm_namespace *, struct ldlm_res_id *,
520 ldlm_iterator_t iter, void *data);
523 int ldlm_flock_completion_ast(struct ldlm_lock *lock, int flags, void *data);
526 __u64 ldlm_extent_shift_kms(struct ldlm_lock *lock, __u64 old_kms);
530 int ldlm_server_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
531 void *data, int flag);
532 int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data);
533 int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data);
534 int ldlm_handle_enqueue(struct ptlrpc_request *req, ldlm_completion_callback,
535 ldlm_blocking_callback, ldlm_glimpse_callback);
536 int ldlm_handle_convert(struct ptlrpc_request *req);
537 int ldlm_handle_cancel(struct ptlrpc_request *req);
538 int ldlm_del_waiting_lock(struct ldlm_lock *lock);
539 int ldlm_get_ref(void);
540 void ldlm_put_ref(int force);
543 ldlm_processing_policy ldlm_get_processing_policy(struct ldlm_resource *res);
544 void ldlm_register_intent(struct ldlm_namespace *ns, ldlm_res_policy arg);
545 void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh);
546 struct ldlm_lock *__ldlm_handle2lock(struct lustre_handle *, int flags);
547 void ldlm_cancel_callback(struct ldlm_lock *);
548 int ldlm_lock_set_data(struct lustre_handle *, void *data);
549 void ldlm_lock_remove_from_lru(struct ldlm_lock *);
550 struct ldlm_lock *ldlm_handle2lock_ns(struct ldlm_namespace *,
551 struct lustre_handle *);
553 static inline struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *h)
555 return __ldlm_handle2lock(h, 0);
558 #define LDLM_LOCK_PUT(lock) \
560 /*LDLM_DEBUG((lock), "put");*/ \
561 ldlm_lock_put(lock); \
564 #define LDLM_LOCK_GET(lock) \
566 ldlm_lock_get(lock); \
567 /*LDLM_DEBUG((lock), "get");*/ \
571 struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock);
572 void ldlm_lock_put(struct ldlm_lock *lock);
573 void ldlm_lock_destroy(struct ldlm_lock *lock);
574 void ldlm_lock2desc(struct ldlm_lock *lock, struct ldlm_lock_desc *desc);
575 void ldlm_lock_addref(struct lustre_handle *lockh, __u32 mode);
576 void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode);
577 void ldlm_lock_decref_and_cancel(struct lustre_handle *lockh, __u32 mode);
578 void ldlm_lock_allow_match(struct ldlm_lock *lock);
579 int ldlm_lock_match(struct ldlm_namespace *ns, int flags, struct ldlm_res_id *,
580 __u32 type, ldlm_policy_data_t *, ldlm_mode_t mode,
581 struct lustre_handle *);
582 struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
584 void ldlm_lock_cancel(struct ldlm_lock *lock);
585 void ldlm_cancel_locks_for_export(struct obd_export *export);
586 void ldlm_reprocess_all(struct ldlm_resource *res);
587 void ldlm_reprocess_all_ns(struct ldlm_namespace *ns);
588 void ldlm_lock_dump(int level, struct ldlm_lock *lock, int pos);
589 void ldlm_lock_dump_handle(int level, struct lustre_handle *);
592 int ldlm_test(struct obd_device *device, struct lustre_handle *connh);
593 int ldlm_regression_start(struct obd_device *obddev,
594 struct lustre_handle *connh,
595 unsigned int threads, unsigned int max_locks_in,
596 unsigned int num_resources_in,
597 unsigned int num_extents_in);
598 int ldlm_regression_stop(void);
602 struct ldlm_namespace *ldlm_namespace_new(char *name, __u32 local);
603 int ldlm_namespace_cleanup(struct ldlm_namespace *ns, int flags);
604 int ldlm_namespace_free(struct ldlm_namespace *ns, int force);
605 int ldlm_proc_setup(void);
606 void ldlm_proc_cleanup(void);
608 /* resource.c - internal */
609 struct ldlm_resource *ldlm_resource_get(struct ldlm_namespace *ns,
610 struct ldlm_resource *parent,
611 struct ldlm_res_id, __u32 type,
613 struct ldlm_resource *ldlm_resource_getref(struct ldlm_resource *res);
614 int ldlm_resource_putref(struct ldlm_resource *res);
615 void ldlm_resource_add_lock(struct ldlm_resource *res, struct list_head *head,
616 struct ldlm_lock *lock);
617 void ldlm_resource_unlink_lock(struct ldlm_lock *lock);
618 void ldlm_res2desc(struct ldlm_resource *res, struct ldlm_resource_desc *desc);
619 void ldlm_dump_all_namespaces(int level);
620 void ldlm_namespace_dump(int level, struct ldlm_namespace *);
621 void ldlm_resource_dump(int level, struct ldlm_resource *);
622 int ldlm_lock_change_resource(struct ldlm_namespace *, struct ldlm_lock *,
626 int ldlm_expired_completion_wait(void *data);
627 int ldlm_completion_ast(struct ldlm_lock *lock, int flags, void *data);
628 int ldlm_cli_enqueue(struct obd_export *exp,
629 struct ptlrpc_request *req,
630 struct ldlm_namespace *ns,
633 ldlm_policy_data_t *,
636 ldlm_blocking_callback blocking,
637 ldlm_completion_callback completion,
638 ldlm_glimpse_callback glimpse,
643 struct lustre_handle *lockh);
644 int ldlm_server_ast(struct lustre_handle *lockh, struct ldlm_lock_desc *new,
645 void *data, __u32 data_len);
646 int ldlm_cli_convert(struct lustre_handle *, int new_mode, int *flags);
647 int ldlm_cli_cancel(struct lustre_handle *lockh);
648 int ldlm_cli_cancel_unused(struct ldlm_namespace *, struct ldlm_res_id *,
649 int flags, void *opaque);
652 /* This has to be here because recursive inclusion sucks. */
653 int intent_disposition(struct ldlm_reply *rep, int flag);
654 void intent_set_disposition(struct ldlm_reply *rep, int flag);
655 int mds_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
656 void *data, int flag);
659 /* ioctls for trying requests */
660 #define IOC_LDLM_TYPE 'f'
661 #define IOC_LDLM_MIN_NR 40
663 #define IOC_LDLM_TEST _IOWR('f', 40, long)
664 #define IOC_LDLM_DUMP _IOWR('f', 41, long)
665 #define IOC_LDLM_REGRESS_START _IOWR('f', 42, long)
666 #define IOC_LDLM_REGRESS_STOP _IOWR('f', 43, long)
667 #define IOC_LDLM_MAX_NR 43
669 static inline void lock_res(struct ldlm_resource *res)
671 spin_lock(&res->lr_lock);
674 static inline void unlock_res(struct ldlm_resource *res)
676 spin_unlock(&res->lr_lock);
679 static inline void check_res_locked(struct ldlm_resource *res)
681 LASSERT_SPIN_LOCKED(&res->lr_lock);