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/lustre_dlm.h>
11 #elif defined(__APPLE__)
12 #include <darwin/lustre_dlm.h>
13 #elif defined(__WINNT__)
14 #include <winnt/lustre_dlm.h>
16 #error Unsupported operating system.
19 #include <lustre_lib.h>
20 #include <lustre_net.h>
21 #include <lustre_import.h>
22 #include <lustre_handles.h>
23 #include <lustre_export.h> /* for obd_export, for LDLM_DEBUG */
28 #define OBD_LDLM_DEVICENAME "ldlm"
30 #define LDLM_DEFAULT_LRU_SIZE (100 * smp_num_cpus)
35 ELDLM_LOCK_CHANGED = 300,
36 ELDLM_LOCK_ABORTED = 301,
37 ELDLM_LOCK_REPLACED = 302,
38 ELDLM_NO_LOCK_DATA = 303,
40 ELDLM_NAMESPACE_EXISTS = 400,
41 ELDLM_BAD_NAMESPACE = 401
44 #define LDLM_NAMESPACE_SERVER 0
45 #define LDLM_NAMESPACE_CLIENT 1
47 #define LDLM_FL_LOCK_CHANGED 0x000001 /* extent, mode, or resource changed */
49 /* If the server returns one of these flags, then the lock was put on that list.
50 * If the client sends one of these flags (during recovery ONLY!), it wants the
51 * lock added to the specified list, no questions asked. -p */
52 #define LDLM_FL_BLOCK_GRANTED 0x000002
53 #define LDLM_FL_BLOCK_CONV 0x000004
54 #define LDLM_FL_BLOCK_WAIT 0x000008
56 #define LDLM_FL_CBPENDING 0x000010 /* this lock is being destroyed */
57 #define LDLM_FL_AST_SENT 0x000020 /* blocking or cancel packet was sent */
58 #define LDLM_FL_WAIT_NOREPROC 0x000040 /* not a real flag, not saved in lock */
59 #define LDLM_FL_CANCEL 0x000080 /* cancellation callback already run */
61 /* Lock is being replayed. This could probably be implied by the fact that one
62 * of BLOCK_{GRANTED,CONV,WAIT} is set, but that is pretty dangerous. */
63 #define LDLM_FL_REPLAY 0x000100
65 #define LDLM_FL_INTENT_ONLY 0x000200 /* don't grant lock, just do intent */
66 #define LDLM_FL_LOCAL_ONLY 0x000400 /* see ldlm_cli_cancel_unused */
68 /* don't run the cancel callback under ldlm_cli_cancel_unused */
69 #define LDLM_FL_FAILED 0x000800
71 #define LDLM_FL_HAS_INTENT 0x001000 /* lock request has intent */
72 #define LDLM_FL_CANCELING 0x002000 /* lock cancel has already been sent */
73 #define LDLM_FL_LOCAL 0x004000 /* local lock (ie, no srv/cli split) */
74 #define LDLM_FL_WARN 0x008000 /* see ldlm_cli_cancel_unused */
75 #define LDLM_FL_DISCARD_DATA 0x010000 /* discard (no writeback) on cancel */
77 #define LDLM_FL_NO_TIMEOUT 0x020000 /* Blocked by group lock - wait
80 /* file & record locking */
81 #define LDLM_FL_BLOCK_NOWAIT 0x040000 // server told not to wait if blocked
82 #define LDLM_FL_TEST_LOCK 0x080000 // return blocking lock
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 /* Don't drop lock covering mmapped file in LRU */
103 #define LDLM_FL_NO_LRU 0x400000
105 /* Immediatelly cancel such locks when they block some other locks. Send
106 cancel notification to original lock holder, but expect no reply. */
107 #define LDLM_FL_CANCEL_ON_BLOCK 0x800000
109 /* Flags flags inherited from parent lock when doing intents. */
110 #define LDLM_INHERIT_FLAGS (LDLM_FL_CANCEL_ON_BLOCK)
112 /* These are flags that are mapped into the flags and ASTs of blocking locks */
113 #define LDLM_AST_DISCARD_DATA 0x80000000 /* Add FL_DISCARD to blocking ASTs */
114 /* Flags sent in AST lock_flags to be mapped into the receiving lock. */
115 #define LDLM_AST_FLAGS (LDLM_FL_DISCARD_DATA)
117 /* The blocking callback is overloaded to perform two functions. These flags
118 * indicate which operation should be performed. */
119 #define LDLM_CB_BLOCKING 1
120 #define LDLM_CB_CANCELING 2
122 /* compatibility matrix */
123 #define LCK_COMPAT_EX LCK_NL
124 #define LCK_COMPAT_PW (LCK_COMPAT_EX | LCK_CR)
125 #define LCK_COMPAT_PR (LCK_COMPAT_PW | LCK_PR)
126 #define LCK_COMPAT_CW (LCK_COMPAT_PW | LCK_CW)
127 #define LCK_COMPAT_CR (LCK_COMPAT_CW | LCK_PR | LCK_PW)
128 #define LCK_COMPAT_NL (LCK_COMPAT_CR | LCK_EX)
129 #define LCK_COMPAT_GROUP (LCK_GROUP | LCK_NL)
131 extern ldlm_mode_t lck_compat_array[];
133 static inline void lockmode_verify(ldlm_mode_t mode)
135 LASSERT(mode > LCK_MINMODE && mode < LCK_MAXMODE);
138 static inline int lockmode_compat(ldlm_mode_t exist, ldlm_mode_t new)
140 return (lck_compat_array[exist] & new);
145 * cluster name spaces
149 #define DLM_OST_NAMESPACE 1
150 #define DLM_MDS_NAMESPACE 2
153 - do we just separate this by security domains and use a prefix for
154 multiple namespaces in the same domain?
159 struct ldlm_resource;
160 struct ldlm_namespace;
162 typedef int (*ldlm_res_policy)(struct ldlm_namespace *, struct ldlm_lock **,
163 void *req_cookie, ldlm_mode_t mode, int flags,
166 struct ldlm_valblock_ops {
167 int (*lvbo_init)(struct ldlm_resource *res);
168 int (*lvbo_update)(struct ldlm_resource *res, struct lustre_msg *m,
169 int buf_idx, int increase);
172 struct ldlm_namespace {
174 __u32 ns_client; /* is this a client-side lock tree? */
175 struct list_head *ns_hash; /* hash table for ns */
176 cfs_waitq_t ns_refcount_waitq; /* for cleanup */
177 atomic_t ns_refcount; /* count of resources in the hash */
178 struct list_head ns_root_list; /* all root resources in ns */
179 struct lustre_lock ns_lock; /* protects hash, refcount, list */
180 struct list_head ns_list_chain; /* position in global NS list */
182 struct list_head ns_unused_list; /* all root resources in ns */
184 unsigned int ns_max_unused;
185 cfs_time_t ns_next_dump; /* next debug dump, jiffies */
187 spinlock_t ns_counter_lock;
189 ldlm_res_policy ns_policy;
190 struct ldlm_valblock_ops *ns_lvbo;
196 * Resource hash table
200 #define RES_HASH_BITS 10
201 #define RES_HASH_SIZE (1UL << RES_HASH_BITS)
202 #define RES_HASH_MASK (RES_HASH_SIZE - 1)
206 typedef int (*ldlm_blocking_callback)(struct ldlm_lock *lock,
207 struct ldlm_lock_desc *new, void *data,
209 typedef int (*ldlm_completion_callback)(struct ldlm_lock *lock, int flags,
211 typedef int (*ldlm_glimpse_callback)(struct ldlm_lock *lock, void *data);
214 struct portals_handle l_handle; // must be first in the structure
216 struct ldlm_resource *l_resource;
217 struct ldlm_lock *l_parent;
218 struct list_head l_children;
219 struct list_head l_childof;
220 struct list_head l_lru;
221 struct list_head l_res_link; // position in one of three res lists
222 struct list_head l_export_chain; // per-export chain of locks
224 ldlm_mode_t l_req_mode;
225 ldlm_mode_t l_granted_mode;
227 ldlm_completion_callback l_completion_ast;
228 ldlm_blocking_callback l_blocking_ast;
229 ldlm_glimpse_callback l_glimpse_ast;
231 struct obd_export *l_export;
232 struct obd_export *l_conn_export;
234 struct lustre_handle l_remote_handle;
235 ldlm_policy_data_t l_policy_data;
241 /* If the lock is granted, a process sleeps on this waitq to learn when
242 * it's no longer in use. If the lock is not granted, a process sleeps
243 * on this waitq to learn when it becomes granted. */
245 struct timeval l_enqueued_time;
247 cfs_time_t l_last_used; /* jiffies */
248 struct ldlm_extent l_req_extent;
250 /* Client-side-only members */
251 __u32 l_lvb_len; /* temporary storage for */
252 void *l_lvb_data; /* an LVB received during */
253 void *l_lvb_swabber; /* an enqueue */
256 /* Server-side-only members */
257 struct list_head l_pending_chain; /* callbacks pending */
258 cfs_time_t l_callback_timeout; /* jiffies */
260 __u32 l_pid; /* pid which created this lock */
263 struct ldlm_resource {
264 struct ldlm_namespace *lr_namespace;
265 struct list_head lr_hash;
266 struct ldlm_resource *lr_parent; /* 0 for a root resource */
267 struct list_head lr_children; /* list head for child resources */
268 struct list_head lr_childof; /* part of ns_root_list if root res,
269 * part of lr_children if child */
271 struct list_head lr_granted;
272 struct list_head lr_converting;
273 struct list_head lr_waiting;
274 ldlm_mode_t lr_most_restr;
275 ldlm_type_t lr_type; /* LDLM_{PLAIN,EXTENT,FLOCK} */
276 struct ldlm_resource *lr_root;
277 struct ldlm_res_id lr_name;
278 atomic_t lr_refcount;
280 /* Server-side-only lock value block elements */
281 struct semaphore lr_lvb_sem;
285 /* lr_tmp holds a list head temporarily, during the building of a work
286 * queue. see ldlm_add_ast_work_item and ldlm_run_ast_work */
290 struct ldlm_ast_work {
291 struct ldlm_lock *w_lock;
293 struct ldlm_lock_desc w_desc;
294 struct list_head w_list;
300 extern struct obd_ops ldlm_obd_ops;
302 extern char *ldlm_lockname[];
303 extern char *ldlm_typename[];
304 extern char *ldlm_it2str(int it);
306 #define __LDLM_DEBUG(level, lock, format, a...) \
308 if (lock->l_resource == NULL) { \
309 CDEBUG(level, "### " format \
310 " ns: \?\? lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "\
311 "res: \?\? rrc=\?\? type: \?\?\? flags: %x remote: " \
312 LPX64" expref: %d pid: %u\n" , ## a, lock, \
313 lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
314 lock->l_readers, lock->l_writers, \
315 ldlm_lockname[lock->l_granted_mode], \
316 ldlm_lockname[lock->l_req_mode], \
317 lock->l_flags, lock->l_remote_handle.cookie, \
319 atomic_read(&lock->l_export->exp_refcount) : -99, \
323 if (lock->l_resource->lr_type == LDLM_EXTENT) { \
324 CDEBUG(level, "### " format \
325 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
326 "res: "LPU64"/"LPU64" rrc: %d type: %s ["LPU64"->"LPU64\
327 "] (req "LPU64"->"LPU64") flags: %x remote: "LPX64 \
328 " expref: %d pid: %u\n" , ## a, \
329 lock->l_resource->lr_namespace->ns_name, lock, \
330 lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
331 lock->l_readers, lock->l_writers, \
332 ldlm_lockname[lock->l_granted_mode], \
333 ldlm_lockname[lock->l_req_mode], \
334 lock->l_resource->lr_name.name[0], \
335 lock->l_resource->lr_name.name[1], \
336 atomic_read(&lock->l_resource->lr_refcount), \
337 ldlm_typename[lock->l_resource->lr_type], \
338 lock->l_policy_data.l_extent.start, \
339 lock->l_policy_data.l_extent.end, \
340 lock->l_req_extent.start, lock->l_req_extent.end, \
341 lock->l_flags, lock->l_remote_handle.cookie, \
343 atomic_read(&lock->l_export->exp_refcount) : -99, \
347 if (lock->l_resource->lr_type == LDLM_FLOCK) { \
348 CDEBUG(level, "### " format \
349 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
350 "res: "LPU64"/"LPU64" rrc: %d type: %s pid: %d " \
351 "["LPU64"->"LPU64"] flags: %x remote: "LPX64 \
352 " expref: %d pid: %u\n" , ## a, \
353 lock->l_resource->lr_namespace->ns_name, lock, \
354 lock->l_handle.h_cookie, atomic_read(&lock->l_refc), \
355 lock->l_readers, lock->l_writers, \
356 ldlm_lockname[lock->l_granted_mode], \
357 ldlm_lockname[lock->l_req_mode], \
358 lock->l_resource->lr_name.name[0], \
359 lock->l_resource->lr_name.name[1], \
360 atomic_read(&lock->l_resource->lr_refcount), \
361 ldlm_typename[lock->l_resource->lr_type], \
362 lock->l_policy_data.l_flock.pid, \
363 lock->l_policy_data.l_flock.start, \
364 lock->l_policy_data.l_flock.end, \
365 lock->l_flags, lock->l_remote_handle.cookie, \
367 atomic_read(&lock->l_export->exp_refcount) : -99, \
371 if (lock->l_resource->lr_type == LDLM_IBITS) { \
372 CDEBUG(level, "### " format \
373 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
374 "res: "LPU64"/"LPU64" bits "LPX64" rrc: %d type: %s " \
375 "flags: %x remote: "LPX64" expref: %d " \
377 lock->l_resource->lr_namespace->ns_name, \
378 lock, lock->l_handle.h_cookie, \
379 atomic_read (&lock->l_refc), \
380 lock->l_readers, lock->l_writers, \
381 ldlm_lockname[lock->l_granted_mode], \
382 ldlm_lockname[lock->l_req_mode], \
383 lock->l_resource->lr_name.name[0], \
384 lock->l_resource->lr_name.name[1], \
385 lock->l_policy_data.l_inodebits.bits, \
386 atomic_read(&lock->l_resource->lr_refcount), \
387 ldlm_typename[lock->l_resource->lr_type], \
388 lock->l_flags, lock->l_remote_handle.cookie, \
390 atomic_read(&lock->l_export->exp_refcount) : -99, \
395 CDEBUG(level, "### " format \
396 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s " \
397 "res: "LPU64"/"LPU64" rrc: %d type: %s flags: %x " \
398 "remote: "LPX64" expref: %d pid: %u\n" , ## a, \
399 lock->l_resource->lr_namespace->ns_name, \
400 lock, lock->l_handle.h_cookie, \
401 atomic_read (&lock->l_refc), \
402 lock->l_readers, lock->l_writers, \
403 ldlm_lockname[lock->l_granted_mode], \
404 ldlm_lockname[lock->l_req_mode], \
405 lock->l_resource->lr_name.name[0], \
406 lock->l_resource->lr_name.name[1], \
407 atomic_read(&lock->l_resource->lr_refcount), \
408 ldlm_typename[lock->l_resource->lr_type], \
409 lock->l_flags, lock->l_remote_handle.cookie, \
411 atomic_read(&lock->l_export->exp_refcount) : -99, \
416 #define LDLM_DEBUG(lock, format, a...) __LDLM_DEBUG(D_DLMTRACE, lock, \
418 #define LDLM_ERROR(lock, format, a...) __LDLM_DEBUG(D_ERROR, lock, format, ## a)
420 #define LDLM_DEBUG_NOLOCK(format, a...) \
421 CDEBUG(D_DLMTRACE, "### " format "\n" , ## a)
423 typedef int (*ldlm_processing_policy)(struct ldlm_lock *lock, int *flags,
424 int first_enq, ldlm_error_t *err);
430 #define LDLM_ITER_CONTINUE 1 /* keep iterating */
431 #define LDLM_ITER_STOP 2 /* stop iterating */
433 typedef int (*ldlm_iterator_t)(struct ldlm_lock *, void *);
434 typedef int (*ldlm_res_iterator_t)(struct ldlm_resource *, void *);
436 int ldlm_resource_foreach(struct ldlm_resource *res, ldlm_iterator_t iter,
438 int ldlm_namespace_foreach(struct ldlm_namespace *ns, ldlm_iterator_t iter,
440 int ldlm_namespace_foreach_res(struct ldlm_namespace *ns,
441 ldlm_res_iterator_t iter, void *closure);
443 int ldlm_replay_locks(struct obd_import *imp);
444 void ldlm_change_cbdata(struct ldlm_namespace *, struct ldlm_res_id *,
445 ldlm_iterator_t iter, void *data);
448 int ldlm_flock_completion_ast(struct ldlm_lock *lock, int flags, void *data);
451 __u64 ldlm_extent_shift_kms(struct ldlm_lock *lock, __u64 old_kms);
455 int ldlm_server_blocking_ast(struct ldlm_lock *, struct ldlm_lock_desc *,
456 void *data, int flag);
457 int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data);
458 int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data);
459 int ldlm_handle_enqueue(struct ptlrpc_request *req, ldlm_completion_callback,
460 ldlm_blocking_callback, ldlm_glimpse_callback);
461 int ldlm_handle_convert(struct ptlrpc_request *req);
462 int ldlm_handle_cancel(struct ptlrpc_request *req);
463 int ldlm_del_waiting_lock(struct ldlm_lock *lock);
464 int ldlm_get_ref(void);
465 void ldlm_put_ref(int force);
468 ldlm_processing_policy ldlm_get_processing_policy(struct ldlm_resource *res);
469 void ldlm_register_intent(struct ldlm_namespace *ns, ldlm_res_policy arg);
470 void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh);
471 struct ldlm_lock *__ldlm_handle2lock(struct lustre_handle *, int flags);
472 void ldlm_cancel_callback(struct ldlm_lock *);
473 int ldlm_lock_set_data(struct lustre_handle *, void *data);
474 void ldlm_lock_remove_from_lru(struct ldlm_lock *);
475 struct ldlm_lock *ldlm_handle2lock_ns(struct ldlm_namespace *,
476 struct lustre_handle *);
478 static inline struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *h)
480 return __ldlm_handle2lock(h, 0);
483 #define LDLM_LOCK_PUT(lock) \
485 /*LDLM_DEBUG((lock), "put");*/ \
486 ldlm_lock_put(lock); \
489 #define LDLM_LOCK_GET(lock) \
491 ldlm_lock_get(lock); \
492 /*LDLM_DEBUG((lock), "get");*/ \
496 struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock);
497 void ldlm_lock_put(struct ldlm_lock *lock);
498 void ldlm_lock_destroy(struct ldlm_lock *lock);
499 void ldlm_lock2desc(struct ldlm_lock *lock, struct ldlm_lock_desc *desc);
500 void ldlm_lock_addref(struct lustre_handle *lockh, __u32 mode);
501 void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode);
502 void ldlm_lock_decref_and_cancel(struct lustre_handle *lockh, __u32 mode);
503 void ldlm_lock_allow_match(struct ldlm_lock *lock);
504 int ldlm_lock_match(struct ldlm_namespace *ns, int flags, struct ldlm_res_id *,
505 ldlm_type_t type, ldlm_policy_data_t *, ldlm_mode_t mode,
506 struct lustre_handle *);
507 struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
509 void ldlm_lock_cancel(struct ldlm_lock *lock);
510 void ldlm_cancel_locks_for_export(struct obd_export *export);
511 void ldlm_reprocess_all(struct ldlm_resource *res);
512 void ldlm_reprocess_all_ns(struct ldlm_namespace *ns);
513 void ldlm_lock_dump(int level, struct ldlm_lock *lock, int pos);
514 void ldlm_lock_dump_handle(int level, struct lustre_handle *);
517 struct ldlm_namespace *ldlm_namespace_new(char *name, __u32 local);
518 int ldlm_namespace_cleanup(struct ldlm_namespace *ns, int flags);
519 int ldlm_namespace_free(struct ldlm_namespace *ns, int force);
520 int ldlm_proc_setup(void);
522 void ldlm_proc_cleanup(void);
524 static inline void ldlm_proc_cleanup(void) {}
527 /* resource.c - internal */
528 struct ldlm_resource *ldlm_resource_get(struct ldlm_namespace *ns,
529 struct ldlm_resource *parent,
530 struct ldlm_res_id, ldlm_type_t type,
532 struct ldlm_resource *ldlm_resource_getref(struct ldlm_resource *res);
533 int ldlm_resource_putref(struct ldlm_resource *res);
534 void ldlm_resource_add_lock(struct ldlm_resource *res, struct list_head *head,
535 struct ldlm_lock *lock);
536 void ldlm_resource_unlink_lock(struct ldlm_lock *lock);
537 void ldlm_res2desc(struct ldlm_resource *res, struct ldlm_resource_desc *desc);
538 void ldlm_dump_all_namespaces(int level);
539 void ldlm_namespace_dump(int level, struct ldlm_namespace *);
540 void ldlm_resource_dump(int level, struct ldlm_resource *);
541 int ldlm_lock_change_resource(struct ldlm_namespace *, struct ldlm_lock *,
544 struct ldlm_callback_suite {
545 ldlm_completion_callback lcs_completion;
546 ldlm_blocking_callback lcs_blocking;
547 ldlm_glimpse_callback lcs_glimpse;
551 int ldlm_expired_completion_wait(void *data);
552 int ldlm_blocking_ast(struct ldlm_lock *lock, struct ldlm_lock_desc *desc,
553 void *data, int flag);
554 int ldlm_glimpse_ast(struct ldlm_lock *lock, void *reqp);
555 int ldlm_completion_ast(struct ldlm_lock *lock, int flags, void *data);
556 int ldlm_cli_enqueue(struct obd_export *exp,
557 struct ptlrpc_request *req,
558 struct ldlm_namespace *ns,
561 ldlm_policy_data_t *,
564 ldlm_blocking_callback blocking,
565 ldlm_completion_callback completion,
566 ldlm_glimpse_callback glimpse,
571 struct lustre_handle *lockh);
572 int ldlm_handle_enqueue0(struct ldlm_namespace *ns, struct ptlrpc_request *req,
573 const struct ldlm_request *dlm_req,
574 const struct ldlm_callback_suite *cbs);
575 int ldlm_server_ast(struct lustre_handle *lockh, struct ldlm_lock_desc *new,
576 void *data, __u32 data_len);
577 int ldlm_cli_convert(struct lustre_handle *, int new_mode, int *flags);
578 int ldlm_handle_convert0(struct ptlrpc_request *req,
579 const struct ldlm_request *dlm_req);
580 int ldlm_cli_cancel(struct lustre_handle *lockh);
581 int ldlm_cli_cancel_unused(struct ldlm_namespace *, struct ldlm_res_id *,
582 int flags, void *opaque);
583 int ldlm_cli_join_lru(struct ldlm_namespace *, struct ldlm_res_id *,
587 /* This has to be here because recursive inclusion sucks. */
588 int intent_disposition(struct ldlm_reply *rep, int flag);
589 void intent_set_disposition(struct ldlm_reply *rep, int flag);
592 /* ioctls for trying requests */
593 #define IOC_LDLM_TYPE 'f'
594 #define IOC_LDLM_MIN_NR 40
596 #define IOC_LDLM_TEST _IOWR('f', 40, long)
597 #define IOC_LDLM_DUMP _IOWR('f', 41, long)
598 #define IOC_LDLM_REGRESS_START _IOWR('f', 42, long)
599 #define IOC_LDLM_REGRESS_STOP _IOWR('f', 43, long)
600 #define IOC_LDLM_MAX_NR 43