4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2011, 2012, Whamcloud, Inc.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
36 * lustre/ldlm/ldlm_lock.c
38 * Author: Peter Braam <braam@clusterfs.com>
39 * Author: Phil Schwan <phil@clusterfs.com>
42 #define DEBUG_SUBSYSTEM S_LDLM
45 # include <libcfs/libcfs.h>
46 # include <linux/lustre_intent.h>
48 # include <liblustre.h>
51 #include <obd_class.h>
52 #include "ldlm_internal.h"
55 char *ldlm_lockname[] = {
66 EXPORT_SYMBOL(ldlm_lockname);
68 char *ldlm_typename[] = {
74 EXPORT_SYMBOL(ldlm_typename);
76 static ldlm_policy_wire_to_local_t ldlm_policy_wire18_to_local[] = {
77 [LDLM_PLAIN - LDLM_MIN_TYPE] ldlm_plain_policy_wire_to_local,
78 [LDLM_EXTENT - LDLM_MIN_TYPE] ldlm_extent_policy_wire_to_local,
79 [LDLM_FLOCK - LDLM_MIN_TYPE] ldlm_flock_policy_wire18_to_local,
80 [LDLM_IBITS - LDLM_MIN_TYPE] ldlm_ibits_policy_wire_to_local,
83 static ldlm_policy_wire_to_local_t ldlm_policy_wire21_to_local[] = {
84 [LDLM_PLAIN - LDLM_MIN_TYPE] ldlm_plain_policy_wire_to_local,
85 [LDLM_EXTENT - LDLM_MIN_TYPE] ldlm_extent_policy_wire_to_local,
86 [LDLM_FLOCK - LDLM_MIN_TYPE] ldlm_flock_policy_wire21_to_local,
87 [LDLM_IBITS - LDLM_MIN_TYPE] ldlm_ibits_policy_wire_to_local,
90 static ldlm_policy_local_to_wire_t ldlm_policy_local_to_wire[] = {
91 [LDLM_PLAIN - LDLM_MIN_TYPE] ldlm_plain_policy_local_to_wire,
92 [LDLM_EXTENT - LDLM_MIN_TYPE] ldlm_extent_policy_local_to_wire,
93 [LDLM_FLOCK - LDLM_MIN_TYPE] ldlm_flock_policy_local_to_wire,
94 [LDLM_IBITS - LDLM_MIN_TYPE] ldlm_ibits_policy_local_to_wire,
98 * Converts lock policy from local format to on the wire lock_desc format
100 void ldlm_convert_policy_to_wire(ldlm_type_t type,
101 const ldlm_policy_data_t *lpolicy,
102 ldlm_wire_policy_data_t *wpolicy)
104 ldlm_policy_local_to_wire_t convert;
106 convert = ldlm_policy_local_to_wire[type - LDLM_MIN_TYPE];
108 convert(lpolicy, wpolicy);
112 * Converts lock policy from on the wire lock_desc format to local format
114 void ldlm_convert_policy_to_local(struct obd_export *exp, ldlm_type_t type,
115 const ldlm_wire_policy_data_t *wpolicy,
116 ldlm_policy_data_t *lpolicy)
118 ldlm_policy_wire_to_local_t convert;
121 /** some badnes for 2.0.0 clients, but 2.0.0 isn't supported */
122 new_client = (exp->exp_connect_flags & OBD_CONNECT_FULL20) != 0;
124 convert = ldlm_policy_wire21_to_local[type - LDLM_MIN_TYPE];
126 convert = ldlm_policy_wire18_to_local[type - LDLM_MIN_TYPE];
128 convert(wpolicy, lpolicy);
131 char *ldlm_it2str(int it)
138 case (IT_OPEN | IT_CREAT):
153 CERROR("Unknown intent %d\n", it);
157 EXPORT_SYMBOL(ldlm_it2str);
159 extern cfs_mem_cache_t *ldlm_lock_slab;
161 #ifdef HAVE_SERVER_SUPPORT
162 static ldlm_processing_policy ldlm_processing_policy_table[] = {
163 [LDLM_PLAIN] ldlm_process_plain_lock,
164 [LDLM_EXTENT] ldlm_process_extent_lock,
166 [LDLM_FLOCK] ldlm_process_flock_lock,
168 [LDLM_IBITS] ldlm_process_inodebits_lock,
171 ldlm_processing_policy ldlm_get_processing_policy(struct ldlm_resource *res)
173 return ldlm_processing_policy_table[res->lr_type];
175 EXPORT_SYMBOL(ldlm_get_processing_policy);
176 #endif /* HAVE_SERVER_SUPPORT */
178 void ldlm_register_intent(struct ldlm_namespace *ns, ldlm_res_policy arg)
182 EXPORT_SYMBOL(ldlm_register_intent);
185 * REFCOUNTED LOCK OBJECTS
190 * Lock refcounts, during creation:
191 * - one special one for allocation, dec'd only once in destroy
192 * - one for being a lock that's in-use
193 * - one for the addref associated with a new lock
195 struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock)
197 cfs_atomic_inc(&lock->l_refc);
200 EXPORT_SYMBOL(ldlm_lock_get);
202 void ldlm_lock_put(struct ldlm_lock *lock)
206 LASSERT(lock->l_resource != LP_POISON);
207 LASSERT(cfs_atomic_read(&lock->l_refc) > 0);
208 if (cfs_atomic_dec_and_test(&lock->l_refc)) {
209 struct ldlm_resource *res;
212 "final lock_put on destroyed lock, freeing it.");
214 res = lock->l_resource;
215 LASSERT(lock->l_destroyed);
216 LASSERT(cfs_list_empty(&lock->l_res_link));
217 LASSERT(cfs_list_empty(&lock->l_pending_chain));
219 lprocfs_counter_decr(ldlm_res_to_ns(res)->ns_stats,
221 lu_ref_del(&res->lr_reference, "lock", lock);
222 ldlm_resource_putref(res);
223 lock->l_resource = NULL;
224 if (lock->l_export) {
225 class_export_lock_put(lock->l_export, lock);
226 lock->l_export = NULL;
229 if (lock->l_lvb_data != NULL)
230 OBD_FREE(lock->l_lvb_data, lock->l_lvb_len);
232 ldlm_interval_free(ldlm_interval_detach(lock));
233 lu_ref_fini(&lock->l_reference);
234 OBD_FREE_RCU(lock, sizeof(*lock), &lock->l_handle);
239 EXPORT_SYMBOL(ldlm_lock_put);
241 int ldlm_lock_remove_from_lru_nolock(struct ldlm_lock *lock)
244 if (!cfs_list_empty(&lock->l_lru)) {
245 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
247 LASSERT(lock->l_resource->lr_type != LDLM_FLOCK);
248 cfs_list_del_init(&lock->l_lru);
249 if (lock->l_flags & LDLM_FL_SKIPPED)
250 lock->l_flags &= ~LDLM_FL_SKIPPED;
251 LASSERT(ns->ns_nr_unused > 0);
258 int ldlm_lock_remove_from_lru(struct ldlm_lock *lock)
260 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
264 if (lock->l_ns_srv) {
265 LASSERT(cfs_list_empty(&lock->l_lru));
269 spin_lock(&ns->ns_lock);
270 rc = ldlm_lock_remove_from_lru_nolock(lock);
271 spin_unlock(&ns->ns_lock);
276 void ldlm_lock_add_to_lru_nolock(struct ldlm_lock *lock)
278 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
280 lock->l_last_used = cfs_time_current();
281 LASSERT(cfs_list_empty(&lock->l_lru));
282 LASSERT(lock->l_resource->lr_type != LDLM_FLOCK);
283 cfs_list_add_tail(&lock->l_lru, &ns->ns_unused_list);
284 LASSERT(ns->ns_nr_unused >= 0);
288 void ldlm_lock_add_to_lru(struct ldlm_lock *lock)
290 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
293 spin_lock(&ns->ns_lock);
294 ldlm_lock_add_to_lru_nolock(lock);
295 spin_unlock(&ns->ns_lock);
299 void ldlm_lock_touch_in_lru(struct ldlm_lock *lock)
301 struct ldlm_namespace *ns = ldlm_lock_to_ns(lock);
304 if (lock->l_ns_srv) {
305 LASSERT(cfs_list_empty(&lock->l_lru));
310 spin_lock(&ns->ns_lock);
311 if (!cfs_list_empty(&lock->l_lru)) {
312 ldlm_lock_remove_from_lru_nolock(lock);
313 ldlm_lock_add_to_lru_nolock(lock);
315 spin_unlock(&ns->ns_lock);
319 /* This used to have a 'strict' flag, which recovery would use to mark an
320 * in-use lock as needing-to-die. Lest I am ever tempted to put it back, I
321 * shall explain why it's gone: with the new hash table scheme, once you call
322 * ldlm_lock_destroy, you can never drop your final references on this lock.
323 * Because it's not in the hash table anymore. -phil */
324 int ldlm_lock_destroy_internal(struct ldlm_lock *lock)
328 if (lock->l_readers || lock->l_writers) {
329 LDLM_ERROR(lock, "lock still has references");
333 if (!cfs_list_empty(&lock->l_res_link)) {
334 LDLM_ERROR(lock, "lock still on resource");
338 if (lock->l_destroyed) {
339 LASSERT(cfs_list_empty(&lock->l_lru));
343 lock->l_destroyed = 1;
345 if (lock->l_export && lock->l_export->exp_lock_hash) {
346 /* NB: it's safe to call cfs_hash_del() even lock isn't
347 * in exp_lock_hash. */
348 /* In the function below, .hs_keycmp resolves to
349 * ldlm_export_lock_keycmp() */
350 /* coverity[overrun-buffer-val] */
351 cfs_hash_del(lock->l_export->exp_lock_hash,
352 &lock->l_remote_handle, &lock->l_exp_hash);
355 ldlm_lock_remove_from_lru(lock);
356 class_handle_unhash(&lock->l_handle);
359 /* Wake anyone waiting for this lock */
360 /* FIXME: I should probably add yet another flag, instead of using
361 * l_export to only call this on clients */
363 class_export_put(lock->l_export);
364 lock->l_export = NULL;
365 if (lock->l_export && lock->l_completion_ast)
366 lock->l_completion_ast(lock, 0);
372 void ldlm_lock_destroy(struct ldlm_lock *lock)
376 lock_res_and_lock(lock);
377 first = ldlm_lock_destroy_internal(lock);
378 unlock_res_and_lock(lock);
380 /* drop reference from hashtable only for first destroy */
382 lu_ref_del(&lock->l_reference, "hash", lock);
383 LDLM_LOCK_RELEASE(lock);
388 void ldlm_lock_destroy_nolock(struct ldlm_lock *lock)
392 first = ldlm_lock_destroy_internal(lock);
393 /* drop reference from hashtable only for first destroy */
395 lu_ref_del(&lock->l_reference, "hash", lock);
396 LDLM_LOCK_RELEASE(lock);
401 /* this is called by portals_handle2object with the handle lock taken */
402 static void lock_handle_addref(void *lock)
404 LDLM_LOCK_GET((struct ldlm_lock *)lock);
407 static void lock_handle_free(void *lock, int size)
409 LASSERT(size == sizeof(struct ldlm_lock));
410 OBD_SLAB_FREE(lock, ldlm_lock_slab, size);
413 struct portals_handle_ops lock_handle_ops = {
414 .hop_addref = lock_handle_addref,
415 .hop_free = lock_handle_free,
419 * usage: pass in a resource on which you have done ldlm_resource_get
420 * new lock will take over the refcount.
421 * returns: lock with refcount 2 - one for current caller and one for remote
423 static struct ldlm_lock *ldlm_lock_new(struct ldlm_resource *resource)
425 struct ldlm_lock *lock;
428 if (resource == NULL)
431 OBD_SLAB_ALLOC_PTR_GFP(lock, ldlm_lock_slab, CFS_ALLOC_IO);
435 spin_lock_init(&lock->l_lock);
436 lock->l_resource = resource;
437 lu_ref_add(&resource->lr_reference, "lock", lock);
439 cfs_atomic_set(&lock->l_refc, 2);
440 CFS_INIT_LIST_HEAD(&lock->l_res_link);
441 CFS_INIT_LIST_HEAD(&lock->l_lru);
442 CFS_INIT_LIST_HEAD(&lock->l_pending_chain);
443 CFS_INIT_LIST_HEAD(&lock->l_bl_ast);
444 CFS_INIT_LIST_HEAD(&lock->l_cp_ast);
445 CFS_INIT_LIST_HEAD(&lock->l_rk_ast);
446 cfs_waitq_init(&lock->l_waitq);
447 lock->l_blocking_lock = NULL;
448 CFS_INIT_LIST_HEAD(&lock->l_sl_mode);
449 CFS_INIT_LIST_HEAD(&lock->l_sl_policy);
450 CFS_INIT_HLIST_NODE(&lock->l_exp_hash);
451 CFS_INIT_HLIST_NODE(&lock->l_exp_flock_hash);
453 lprocfs_counter_incr(ldlm_res_to_ns(resource)->ns_stats,
455 CFS_INIT_LIST_HEAD(&lock->l_handle.h_link);
456 class_handle_hash(&lock->l_handle, &lock_handle_ops);
458 lu_ref_init(&lock->l_reference);
459 lu_ref_add(&lock->l_reference, "hash", lock);
460 lock->l_callback_timeout = 0;
462 #if LUSTRE_TRACKS_LOCK_EXP_REFS
463 CFS_INIT_LIST_HEAD(&lock->l_exp_refs_link);
464 lock->l_exp_refs_nr = 0;
465 lock->l_exp_refs_target = NULL;
467 CFS_INIT_LIST_HEAD(&lock->l_exp_list);
472 int ldlm_lock_change_resource(struct ldlm_namespace *ns, struct ldlm_lock *lock,
473 const struct ldlm_res_id *new_resid)
475 struct ldlm_resource *oldres = lock->l_resource;
476 struct ldlm_resource *newres;
480 LASSERT(ns_is_client(ns));
482 lock_res_and_lock(lock);
483 if (memcmp(new_resid, &lock->l_resource->lr_name,
484 sizeof(lock->l_resource->lr_name)) == 0) {
486 unlock_res_and_lock(lock);
490 LASSERT(new_resid->name[0] != 0);
492 /* This function assumes that the lock isn't on any lists */
493 LASSERT(cfs_list_empty(&lock->l_res_link));
495 type = oldres->lr_type;
496 unlock_res_and_lock(lock);
498 newres = ldlm_resource_get(ns, NULL, new_resid, type, 1);
502 lu_ref_add(&newres->lr_reference, "lock", lock);
504 * To flip the lock from the old to the new resource, lock, oldres and
505 * newres have to be locked. Resource spin-locks are nested within
506 * lock->l_lock, and are taken in the memory address order to avoid
509 spin_lock(&lock->l_lock);
510 oldres = lock->l_resource;
511 if (oldres < newres) {
513 lock_res_nested(newres, LRT_NEW);
516 lock_res_nested(oldres, LRT_NEW);
518 LASSERT(memcmp(new_resid, &oldres->lr_name,
519 sizeof oldres->lr_name) != 0);
520 lock->l_resource = newres;
522 unlock_res_and_lock(lock);
524 /* ...and the flowers are still standing! */
525 lu_ref_del(&oldres->lr_reference, "lock", lock);
526 ldlm_resource_putref(oldres);
530 EXPORT_SYMBOL(ldlm_lock_change_resource);
536 void ldlm_lock2handle(const struct ldlm_lock *lock, struct lustre_handle *lockh)
538 lockh->cookie = lock->l_handle.h_cookie;
540 EXPORT_SYMBOL(ldlm_lock2handle);
542 /* if flags: atomically get the lock and set the flags.
543 * Return NULL if flag already set
546 struct ldlm_lock *__ldlm_handle2lock(const struct lustre_handle *handle,
549 struct ldlm_lock *lock;
554 lock = class_handle2object(handle->cookie);
558 /* It's unlikely but possible that someone marked the lock as
559 * destroyed after we did handle2object on it */
560 if (flags == 0 && !lock->l_destroyed) {
561 lu_ref_add(&lock->l_reference, "handle", cfs_current());
565 lock_res_and_lock(lock);
567 LASSERT(lock->l_resource != NULL);
569 lu_ref_add_atomic(&lock->l_reference, "handle", cfs_current());
570 if (unlikely(lock->l_destroyed)) {
571 unlock_res_and_lock(lock);
572 CDEBUG(D_INFO, "lock already destroyed: lock %p\n", lock);
577 if (flags && (lock->l_flags & flags)) {
578 unlock_res_and_lock(lock);
584 lock->l_flags |= flags;
586 unlock_res_and_lock(lock);
589 EXPORT_SYMBOL(__ldlm_handle2lock);
591 void ldlm_lock2desc(struct ldlm_lock *lock, struct ldlm_lock_desc *desc)
593 struct obd_export *exp = lock->l_export?:lock->l_conn_export;
594 /* INODEBITS_INTEROP: If the other side does not support
595 * inodebits, reply with a plain lock descriptor.
597 if ((lock->l_resource->lr_type == LDLM_IBITS) &&
598 (exp && !(exp->exp_connect_flags & OBD_CONNECT_IBITS))) {
599 /* Make sure all the right bits are set in this lock we
600 are going to pass to client */
601 LASSERTF(lock->l_policy_data.l_inodebits.bits ==
602 (MDS_INODELOCK_LOOKUP | MDS_INODELOCK_UPDATE |
603 MDS_INODELOCK_LAYOUT),
604 "Inappropriate inode lock bits during "
605 "conversion " LPU64 "\n",
606 lock->l_policy_data.l_inodebits.bits);
608 ldlm_res2desc(lock->l_resource, &desc->l_resource);
609 desc->l_resource.lr_type = LDLM_PLAIN;
611 /* Convert "new" lock mode to something old client can
613 if ((lock->l_req_mode == LCK_CR) ||
614 (lock->l_req_mode == LCK_CW))
615 desc->l_req_mode = LCK_PR;
617 desc->l_req_mode = lock->l_req_mode;
618 if ((lock->l_granted_mode == LCK_CR) ||
619 (lock->l_granted_mode == LCK_CW)) {
620 desc->l_granted_mode = LCK_PR;
622 /* We never grant PW/EX locks to clients */
623 LASSERT((lock->l_granted_mode != LCK_PW) &&
624 (lock->l_granted_mode != LCK_EX));
625 desc->l_granted_mode = lock->l_granted_mode;
628 /* We do not copy policy here, because there is no
629 policy for plain locks */
631 ldlm_res2desc(lock->l_resource, &desc->l_resource);
632 desc->l_req_mode = lock->l_req_mode;
633 desc->l_granted_mode = lock->l_granted_mode;
634 ldlm_convert_policy_to_wire(lock->l_resource->lr_type,
635 &lock->l_policy_data,
636 &desc->l_policy_data);
639 EXPORT_SYMBOL(ldlm_lock2desc);
641 void ldlm_add_bl_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
642 cfs_list_t *work_list)
644 if ((lock->l_flags & LDLM_FL_AST_SENT) == 0) {
645 LDLM_DEBUG(lock, "lock incompatible; sending blocking AST.");
646 lock->l_flags |= LDLM_FL_AST_SENT;
647 /* If the enqueuing client said so, tell the AST recipient to
648 * discard dirty data, rather than writing back. */
649 if (new->l_flags & LDLM_AST_DISCARD_DATA)
650 lock->l_flags |= LDLM_FL_DISCARD_DATA;
651 LASSERT(cfs_list_empty(&lock->l_bl_ast));
652 cfs_list_add(&lock->l_bl_ast, work_list);
654 LASSERT(lock->l_blocking_lock == NULL);
655 lock->l_blocking_lock = LDLM_LOCK_GET(new);
659 void ldlm_add_cp_work_item(struct ldlm_lock *lock, cfs_list_t *work_list)
661 if ((lock->l_flags & LDLM_FL_CP_REQD) == 0) {
662 lock->l_flags |= LDLM_FL_CP_REQD;
663 LDLM_DEBUG(lock, "lock granted; sending completion AST.");
664 LASSERT(cfs_list_empty(&lock->l_cp_ast));
665 cfs_list_add(&lock->l_cp_ast, work_list);
670 /* must be called with lr_lock held */
671 void ldlm_add_ast_work_item(struct ldlm_lock *lock, struct ldlm_lock *new,
672 cfs_list_t *work_list)
675 check_res_locked(lock->l_resource);
677 ldlm_add_bl_work_item(lock, new, work_list);
679 ldlm_add_cp_work_item(lock, work_list);
683 void ldlm_lock_addref(struct lustre_handle *lockh, __u32 mode)
685 struct ldlm_lock *lock;
687 lock = ldlm_handle2lock(lockh);
688 LASSERT(lock != NULL);
689 ldlm_lock_addref_internal(lock, mode);
692 EXPORT_SYMBOL(ldlm_lock_addref);
694 void ldlm_lock_addref_internal_nolock(struct ldlm_lock *lock, __u32 mode)
696 ldlm_lock_remove_from_lru(lock);
697 if (mode & (LCK_NL | LCK_CR | LCK_PR)) {
699 lu_ref_add_atomic(&lock->l_reference, "reader", lock);
701 if (mode & (LCK_EX | LCK_CW | LCK_PW | LCK_GROUP | LCK_COS)) {
703 lu_ref_add_atomic(&lock->l_reference, "writer", lock);
706 lu_ref_add_atomic(&lock->l_reference, "user", lock);
707 LDLM_DEBUG(lock, "ldlm_lock_addref(%s)", ldlm_lockname[mode]);
711 * Attempts to addref a lock, and fails if lock is already LDLM_FL_CBPENDING
714 * \retval 0 success, lock was addref-ed
716 * \retval -EAGAIN lock is being canceled.
718 int ldlm_lock_addref_try(struct lustre_handle *lockh, __u32 mode)
720 struct ldlm_lock *lock;
724 lock = ldlm_handle2lock(lockh);
726 lock_res_and_lock(lock);
727 if (lock->l_readers != 0 || lock->l_writers != 0 ||
728 !(lock->l_flags & LDLM_FL_CBPENDING)) {
729 ldlm_lock_addref_internal_nolock(lock, mode);
732 unlock_res_and_lock(lock);
737 EXPORT_SYMBOL(ldlm_lock_addref_try);
739 /* only called for local locks */
740 void ldlm_lock_addref_internal(struct ldlm_lock *lock, __u32 mode)
742 lock_res_and_lock(lock);
743 ldlm_lock_addref_internal_nolock(lock, mode);
744 unlock_res_and_lock(lock);
747 /* only called in ldlm_flock_destroy and for local locks.
748 * * for LDLM_FLOCK type locks, l_blocking_ast is null, and
749 * * ldlm_lock_remove_from_lru() does nothing, it is safe
750 * * for ldlm_flock_destroy usage by dropping some code */
751 void ldlm_lock_decref_internal_nolock(struct ldlm_lock *lock, __u32 mode)
753 LDLM_DEBUG(lock, "ldlm_lock_decref(%s)", ldlm_lockname[mode]);
754 if (mode & (LCK_NL | LCK_CR | LCK_PR)) {
755 LASSERT(lock->l_readers > 0);
756 lu_ref_del(&lock->l_reference, "reader", lock);
759 if (mode & (LCK_EX | LCK_CW | LCK_PW | LCK_GROUP | LCK_COS)) {
760 LASSERT(lock->l_writers > 0);
761 lu_ref_del(&lock->l_reference, "writer", lock);
765 lu_ref_del(&lock->l_reference, "user", lock);
766 LDLM_LOCK_RELEASE(lock); /* matches the LDLM_LOCK_GET() in addref */
769 void ldlm_lock_decref_internal(struct ldlm_lock *lock, __u32 mode)
771 struct ldlm_namespace *ns;
774 lock_res_and_lock(lock);
776 ns = ldlm_lock_to_ns(lock);
778 ldlm_lock_decref_internal_nolock(lock, mode);
780 if (lock->l_flags & LDLM_FL_LOCAL &&
781 !lock->l_readers && !lock->l_writers) {
782 /* If this is a local lock on a server namespace and this was
783 * the last reference, cancel the lock. */
784 CDEBUG(D_INFO, "forcing cancel of local lock\n");
785 lock->l_flags |= LDLM_FL_CBPENDING;
788 if (!lock->l_readers && !lock->l_writers &&
789 (lock->l_flags & LDLM_FL_CBPENDING)) {
790 /* If we received a blocked AST and this was the last reference,
791 * run the callback. */
792 if (lock->l_ns_srv && lock->l_export)
793 CERROR("FL_CBPENDING set on non-local lock--just a "
796 LDLM_DEBUG(lock, "final decref done on cbpending lock");
798 LDLM_LOCK_GET(lock); /* dropped by bl thread */
799 ldlm_lock_remove_from_lru(lock);
800 unlock_res_and_lock(lock);
802 if (lock->l_flags & LDLM_FL_FAIL_LOC)
803 OBD_RACE(OBD_FAIL_LDLM_CP_BL_RACE);
805 if ((lock->l_flags & LDLM_FL_ATOMIC_CB) ||
806 ldlm_bl_to_thread_lock(ns, NULL, lock) != 0)
807 ldlm_handle_bl_callback(ns, NULL, lock);
808 } else if (ns_is_client(ns) &&
809 !lock->l_readers && !lock->l_writers &&
810 !(lock->l_flags & LDLM_FL_NO_LRU) &&
811 !(lock->l_flags & LDLM_FL_BL_AST)) {
813 LDLM_DEBUG(lock, "add lock into lru list");
815 /* If this is a client-side namespace and this was the last
816 * reference, put it on the LRU. */
817 ldlm_lock_add_to_lru(lock);
818 unlock_res_and_lock(lock);
820 if (lock->l_flags & LDLM_FL_FAIL_LOC)
821 OBD_RACE(OBD_FAIL_LDLM_CP_BL_RACE);
823 /* Call ldlm_cancel_lru() only if EARLY_CANCEL and LRU RESIZE
824 * are not supported by the server, otherwise, it is done on
826 if (!exp_connect_cancelset(lock->l_conn_export) &&
827 !ns_connect_lru_resize(ns))
828 ldlm_cancel_lru(ns, 0, LDLM_ASYNC, 0);
830 LDLM_DEBUG(lock, "do not add lock into lru list");
831 unlock_res_and_lock(lock);
837 void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode)
839 struct ldlm_lock *lock = __ldlm_handle2lock(lockh, 0);
840 LASSERTF(lock != NULL, "Non-existing lock: "LPX64"\n", lockh->cookie);
841 ldlm_lock_decref_internal(lock, mode);
844 EXPORT_SYMBOL(ldlm_lock_decref);
846 /* This will drop a lock reference and mark it for destruction, but will not
847 * necessarily cancel the lock before returning. */
848 void ldlm_lock_decref_and_cancel(struct lustre_handle *lockh, __u32 mode)
850 struct ldlm_lock *lock = __ldlm_handle2lock(lockh, 0);
853 LASSERT(lock != NULL);
855 LDLM_DEBUG(lock, "ldlm_lock_decref(%s)", ldlm_lockname[mode]);
856 lock_res_and_lock(lock);
857 lock->l_flags |= LDLM_FL_CBPENDING;
858 unlock_res_and_lock(lock);
859 ldlm_lock_decref_internal(lock, mode);
862 EXPORT_SYMBOL(ldlm_lock_decref_and_cancel);
864 struct sl_insert_point {
865 cfs_list_t *res_link;
866 cfs_list_t *mode_link;
867 cfs_list_t *policy_link;
871 * search_granted_lock
874 * Finds a position to insert the new lock.
876 * queue [input]: the granted list where search acts on;
877 * req [input]: the lock whose position to be located;
878 * prev [output]: positions within 3 lists to insert @req to
882 * - ldlm_grant_lock_with_skiplist
884 static void search_granted_lock(cfs_list_t *queue,
885 struct ldlm_lock *req,
886 struct sl_insert_point *prev)
889 struct ldlm_lock *lock, *mode_end, *policy_end;
892 cfs_list_for_each(tmp, queue) {
893 lock = cfs_list_entry(tmp, struct ldlm_lock, l_res_link);
895 mode_end = cfs_list_entry(lock->l_sl_mode.prev,
896 struct ldlm_lock, l_sl_mode);
898 if (lock->l_req_mode != req->l_req_mode) {
899 /* jump to last lock of mode group */
900 tmp = &mode_end->l_res_link;
904 /* suitable mode group is found */
905 if (lock->l_resource->lr_type == LDLM_PLAIN) {
906 /* insert point is last lock of the mode group */
907 prev->res_link = &mode_end->l_res_link;
908 prev->mode_link = &mode_end->l_sl_mode;
909 prev->policy_link = &req->l_sl_policy;
912 } else if (lock->l_resource->lr_type == LDLM_IBITS) {
915 cfs_list_entry(lock->l_sl_policy.prev,
919 if (lock->l_policy_data.l_inodebits.bits ==
920 req->l_policy_data.l_inodebits.bits) {
921 /* insert point is last lock of
922 * the policy group */
924 &policy_end->l_res_link;
926 &policy_end->l_sl_mode;
928 &policy_end->l_sl_policy;
933 if (policy_end == mode_end)
934 /* done with mode group */
937 /* go to next policy group within mode group */
938 tmp = policy_end->l_res_link.next;
939 lock = cfs_list_entry(tmp, struct ldlm_lock,
941 } /* loop over policy groups within the mode group */
943 /* insert point is last lock of the mode group,
944 * new policy group is started */
945 prev->res_link = &mode_end->l_res_link;
946 prev->mode_link = &mode_end->l_sl_mode;
947 prev->policy_link = &req->l_sl_policy;
951 LDLM_ERROR(lock,"is not LDLM_PLAIN or LDLM_IBITS lock");
956 /* insert point is last lock on the queue,
957 * new mode group and new policy group are started */
958 prev->res_link = queue->prev;
959 prev->mode_link = &req->l_sl_mode;
960 prev->policy_link = &req->l_sl_policy;
965 static void ldlm_granted_list_add_lock(struct ldlm_lock *lock,
966 struct sl_insert_point *prev)
968 struct ldlm_resource *res = lock->l_resource;
971 check_res_locked(res);
973 ldlm_resource_dump(D_INFO, res);
974 LDLM_DEBUG(lock, "About to add lock:");
976 if (lock->l_destroyed) {
977 CDEBUG(D_OTHER, "Lock destroyed, not adding to resource\n");
981 LASSERT(cfs_list_empty(&lock->l_res_link));
982 LASSERT(cfs_list_empty(&lock->l_sl_mode));
983 LASSERT(cfs_list_empty(&lock->l_sl_policy));
986 * lock->link == prev->link means lock is first starting the group.
987 * Don't re-add to itself to suppress kernel warnings.
989 if (&lock->l_res_link != prev->res_link)
990 cfs_list_add(&lock->l_res_link, prev->res_link);
991 if (&lock->l_sl_mode != prev->mode_link)
992 cfs_list_add(&lock->l_sl_mode, prev->mode_link);
993 if (&lock->l_sl_policy != prev->policy_link)
994 cfs_list_add(&lock->l_sl_policy, prev->policy_link);
999 static void ldlm_grant_lock_with_skiplist(struct ldlm_lock *lock)
1001 struct sl_insert_point prev;
1004 LASSERT(lock->l_req_mode == lock->l_granted_mode);
1006 search_granted_lock(&lock->l_resource->lr_granted, lock, &prev);
1007 ldlm_granted_list_add_lock(lock, &prev);
1012 * - ldlm_lock_enqueue
1013 * - ldlm_reprocess_queue
1014 * - ldlm_lock_convert
1016 * must be called with lr_lock held
1018 void ldlm_grant_lock(struct ldlm_lock *lock, cfs_list_t *work_list)
1020 struct ldlm_resource *res = lock->l_resource;
1023 check_res_locked(res);
1025 lock->l_granted_mode = lock->l_req_mode;
1026 if (res->lr_type == LDLM_PLAIN || res->lr_type == LDLM_IBITS)
1027 ldlm_grant_lock_with_skiplist(lock);
1028 else if (res->lr_type == LDLM_EXTENT)
1029 ldlm_extent_add_lock(res, lock);
1031 ldlm_resource_add_lock(res, &res->lr_granted, lock);
1033 if (lock->l_granted_mode < res->lr_most_restr)
1034 res->lr_most_restr = lock->l_granted_mode;
1036 if (work_list && lock->l_completion_ast != NULL)
1037 ldlm_add_ast_work_item(lock, NULL, work_list);
1039 ldlm_pool_add(&ldlm_res_to_ns(res)->ns_pool, lock);
1043 /* returns a referenced lock or NULL. See the flag descriptions below, in the
1044 * comment above ldlm_lock_match */
1045 static struct ldlm_lock *search_queue(cfs_list_t *queue,
1047 ldlm_policy_data_t *policy,
1048 struct ldlm_lock *old_lock,
1049 __u64 flags, int unref)
1051 struct ldlm_lock *lock;
1054 cfs_list_for_each(tmp, queue) {
1057 lock = cfs_list_entry(tmp, struct ldlm_lock, l_res_link);
1059 if (lock == old_lock)
1062 /* llite sometimes wants to match locks that will be
1063 * canceled when their users drop, but we allow it to match
1064 * if it passes in CBPENDING and the lock still has users.
1065 * this is generally only going to be used by children
1066 * whose parents already hold a lock so forward progress
1067 * can still happen. */
1068 if (lock->l_flags & LDLM_FL_CBPENDING &&
1069 !(flags & LDLM_FL_CBPENDING))
1071 if (!unref && lock->l_flags & LDLM_FL_CBPENDING &&
1072 lock->l_readers == 0 && lock->l_writers == 0)
1075 if (!(lock->l_req_mode & *mode))
1077 match = lock->l_req_mode;
1079 if (lock->l_resource->lr_type == LDLM_EXTENT &&
1080 (lock->l_policy_data.l_extent.start >
1081 policy->l_extent.start ||
1082 lock->l_policy_data.l_extent.end < policy->l_extent.end))
1085 if (unlikely(match == LCK_GROUP) &&
1086 lock->l_resource->lr_type == LDLM_EXTENT &&
1087 lock->l_policy_data.l_extent.gid != policy->l_extent.gid)
1090 /* We match if we have existing lock with same or wider set
1092 if (lock->l_resource->lr_type == LDLM_IBITS &&
1093 ((lock->l_policy_data.l_inodebits.bits &
1094 policy->l_inodebits.bits) !=
1095 policy->l_inodebits.bits))
1099 (lock->l_destroyed || lock->l_flags & LDLM_FL_FAILED ||
1103 if ((flags & LDLM_FL_LOCAL_ONLY) &&
1104 !(lock->l_flags & LDLM_FL_LOCAL))
1107 if (flags & LDLM_FL_TEST_LOCK) {
1108 LDLM_LOCK_GET(lock);
1109 ldlm_lock_touch_in_lru(lock);
1111 ldlm_lock_addref_internal_nolock(lock, match);
1120 void ldlm_lock_fail_match_locked(struct ldlm_lock *lock)
1122 if (!lock->l_failed) {
1124 cfs_waitq_broadcast(&lock->l_waitq);
1127 EXPORT_SYMBOL(ldlm_lock_fail_match_locked);
1129 void ldlm_lock_fail_match(struct ldlm_lock *lock)
1131 lock_res_and_lock(lock);
1132 ldlm_lock_fail_match_locked(lock);
1133 unlock_res_and_lock(lock);
1135 EXPORT_SYMBOL(ldlm_lock_fail_match);
1137 void ldlm_lock_allow_match_locked(struct ldlm_lock *lock)
1139 lock->l_flags |= LDLM_FL_LVB_READY;
1140 cfs_waitq_broadcast(&lock->l_waitq);
1142 EXPORT_SYMBOL(ldlm_lock_allow_match_locked);
1144 void ldlm_lock_allow_match(struct ldlm_lock *lock)
1146 lock_res_and_lock(lock);
1147 ldlm_lock_allow_match_locked(lock);
1148 unlock_res_and_lock(lock);
1150 EXPORT_SYMBOL(ldlm_lock_allow_match);
1152 /* Can be called in two ways:
1154 * If 'ns' is NULL, then lockh describes an existing lock that we want to look
1155 * for a duplicate of.
1157 * Otherwise, all of the fields must be filled in, to match against.
1159 * If 'flags' contains LDLM_FL_LOCAL_ONLY, then only match local locks on the
1160 * server (ie, connh is NULL)
1161 * If 'flags' contains LDLM_FL_BLOCK_GRANTED, then only locks on the granted
1162 * list will be considered
1163 * If 'flags' contains LDLM_FL_CBPENDING, then locks that have been marked
1164 * to be canceled can still be matched as long as they still have reader
1165 * or writer refernces
1166 * If 'flags' contains LDLM_FL_TEST_LOCK, then don't actually reference a lock,
1167 * just tell us if we would have matched.
1169 * Returns 1 if it finds an already-existing lock that is compatible; in this
1170 * case, lockh is filled in with a addref()ed lock
1172 * we also check security context, if that failed we simply return 0 (to keep
1173 * caller code unchanged), the context failure will be discovered by caller
1176 ldlm_mode_t ldlm_lock_match(struct ldlm_namespace *ns, __u64 flags,
1177 const struct ldlm_res_id *res_id, ldlm_type_t type,
1178 ldlm_policy_data_t *policy, ldlm_mode_t mode,
1179 struct lustre_handle *lockh, int unref)
1181 struct ldlm_resource *res;
1182 struct ldlm_lock *lock, *old_lock = NULL;
1187 old_lock = ldlm_handle2lock(lockh);
1190 ns = ldlm_lock_to_ns(old_lock);
1191 res_id = &old_lock->l_resource->lr_name;
1192 type = old_lock->l_resource->lr_type;
1193 mode = old_lock->l_req_mode;
1196 res = ldlm_resource_get(ns, NULL, res_id, type, 0);
1198 LASSERT(old_lock == NULL);
1202 LDLM_RESOURCE_ADDREF(res);
1205 lock = search_queue(&res->lr_granted, &mode, policy, old_lock,
1209 if (flags & LDLM_FL_BLOCK_GRANTED)
1211 lock = search_queue(&res->lr_converting, &mode, policy, old_lock,
1215 lock = search_queue(&res->lr_waiting, &mode, policy, old_lock,
1223 LDLM_RESOURCE_DELREF(res);
1224 ldlm_resource_putref(res);
1227 ldlm_lock2handle(lock, lockh);
1228 if ((flags & LDLM_FL_LVB_READY) &&
1229 (!(lock->l_flags & LDLM_FL_LVB_READY))) {
1230 struct l_wait_info lwi;
1231 if (lock->l_completion_ast) {
1232 int err = lock->l_completion_ast(lock,
1233 LDLM_FL_WAIT_NOREPROC,
1236 if (flags & LDLM_FL_TEST_LOCK)
1237 LDLM_LOCK_RELEASE(lock);
1239 ldlm_lock_decref_internal(lock,
1246 lwi = LWI_TIMEOUT_INTR(cfs_time_seconds(obd_timeout),
1247 NULL, LWI_ON_SIGNAL_NOOP, NULL);
1249 /* XXX FIXME see comment on CAN_MATCH in lustre_dlm.h */
1250 l_wait_event(lock->l_waitq,
1251 lock->l_flags & LDLM_FL_LVB_READY ||
1252 lock->l_destroyed || lock->l_failed,
1254 if (!(lock->l_flags & LDLM_FL_LVB_READY)) {
1255 if (flags & LDLM_FL_TEST_LOCK)
1256 LDLM_LOCK_RELEASE(lock);
1258 ldlm_lock_decref_internal(lock, mode);
1265 LDLM_DEBUG(lock, "matched ("LPU64" "LPU64")",
1266 (type == LDLM_PLAIN || type == LDLM_IBITS) ?
1267 res_id->name[2] : policy->l_extent.start,
1268 (type == LDLM_PLAIN || type == LDLM_IBITS) ?
1269 res_id->name[3] : policy->l_extent.end);
1271 /* check user's security context */
1272 if (lock->l_conn_export &&
1273 sptlrpc_import_check_ctx(
1274 class_exp2cliimp(lock->l_conn_export))) {
1275 if (!(flags & LDLM_FL_TEST_LOCK))
1276 ldlm_lock_decref_internal(lock, mode);
1280 if (flags & LDLM_FL_TEST_LOCK)
1281 LDLM_LOCK_RELEASE(lock);
1283 } else if (!(flags & LDLM_FL_TEST_LOCK)) {/*less verbose for test-only*/
1284 LDLM_DEBUG_NOLOCK("not matched ns %p type %u mode %u res "
1285 LPU64"/"LPU64" ("LPU64" "LPU64")", ns,
1286 type, mode, res_id->name[0], res_id->name[1],
1287 (type == LDLM_PLAIN || type == LDLM_IBITS) ?
1288 res_id->name[2] :policy->l_extent.start,
1289 (type == LDLM_PLAIN || type == LDLM_IBITS) ?
1290 res_id->name[3] : policy->l_extent.end);
1293 LDLM_LOCK_PUT(old_lock);
1295 return rc ? mode : 0;
1297 EXPORT_SYMBOL(ldlm_lock_match);
1299 ldlm_mode_t ldlm_revalidate_lock_handle(struct lustre_handle *lockh,
1302 struct ldlm_lock *lock;
1303 ldlm_mode_t mode = 0;
1306 lock = ldlm_handle2lock(lockh);
1308 lock_res_and_lock(lock);
1309 if (lock->l_destroyed || lock->l_flags & LDLM_FL_FAILED ||
1313 if (lock->l_flags & LDLM_FL_CBPENDING &&
1314 lock->l_readers == 0 && lock->l_writers == 0)
1318 *bits = lock->l_policy_data.l_inodebits.bits;
1319 mode = lock->l_granted_mode;
1320 ldlm_lock_addref_internal_nolock(lock, mode);
1327 unlock_res_and_lock(lock);
1328 LDLM_LOCK_PUT(lock);
1332 EXPORT_SYMBOL(ldlm_revalidate_lock_handle);
1334 /* The caller's duty to guarantee the buffer is large enough. */
1335 int ldlm_fill_lvb(struct ldlm_lock *lock, struct req_capsule *pill,
1336 enum req_location loc, void *data, int size)
1341 LASSERT(data != NULL);
1344 switch (lock->l_lvb_type) {
1346 if (size == sizeof(struct ost_lvb)) {
1347 if (loc == RCL_CLIENT)
1348 lvb = req_capsule_client_swab_get(pill,
1350 lustre_swab_ost_lvb);
1352 lvb = req_capsule_server_swab_get(pill,
1354 lustre_swab_ost_lvb);
1355 if (unlikely(lvb == NULL)) {
1356 LDLM_ERROR(lock, "no LVB");
1360 memcpy(data, lvb, size);
1361 } else if (size == sizeof(struct ost_lvb_v1)) {
1362 struct ost_lvb *olvb = data;
1364 if (loc == RCL_CLIENT)
1365 lvb = req_capsule_client_swab_get(pill,
1367 lustre_swab_ost_lvb_v1);
1369 lvb = req_capsule_server_sized_swab_get(pill,
1371 lustre_swab_ost_lvb_v1);
1372 if (unlikely(lvb == NULL)) {
1373 LDLM_ERROR(lock, "no LVB");
1377 memcpy(data, lvb, size);
1378 olvb->lvb_mtime_ns = 0;
1379 olvb->lvb_atime_ns = 0;
1380 olvb->lvb_ctime_ns = 0;
1382 LDLM_ERROR(lock, "Replied unexpected ost LVB size %d",
1388 if (size == sizeof(struct lquota_lvb)) {
1389 if (loc == RCL_CLIENT)
1390 lvb = req_capsule_client_swab_get(pill,
1392 lustre_swab_lquota_lvb);
1394 lvb = req_capsule_server_swab_get(pill,
1396 lustre_swab_lquota_lvb);
1397 if (unlikely(lvb == NULL)) {
1398 LDLM_ERROR(lock, "no LVB");
1402 memcpy(data, lvb, size);
1404 LDLM_ERROR(lock, "Replied unexpected lquota LVB size %d",
1413 if (loc == RCL_CLIENT)
1414 lvb = req_capsule_client_get(pill, &RMF_DLM_LVB);
1416 lvb = req_capsule_server_get(pill, &RMF_DLM_LVB);
1417 if (unlikely(lvb == NULL)) {
1418 LDLM_ERROR(lock, "no LVB");
1422 memcpy(data, lvb, size);
1425 LDLM_ERROR(lock, "Unexpected LVB type");
1432 /* Returns a referenced lock */
1433 struct ldlm_lock *ldlm_lock_create(struct ldlm_namespace *ns,
1434 const struct ldlm_res_id *res_id,
1437 const struct ldlm_callback_suite *cbs,
1438 void *data, __u32 lvb_len,
1439 enum lvb_type lvb_type)
1441 struct ldlm_lock *lock;
1442 struct ldlm_resource *res;
1445 res = ldlm_resource_get(ns, NULL, res_id, type, 1);
1449 lock = ldlm_lock_new(res);
1454 lock->l_req_mode = mode;
1455 lock->l_ast_data = data;
1456 lock->l_pid = cfs_curproc_pid();
1457 lock->l_ns_srv = !!ns_is_server(ns);
1459 lock->l_blocking_ast = cbs->lcs_blocking;
1460 lock->l_completion_ast = cbs->lcs_completion;
1461 lock->l_glimpse_ast = cbs->lcs_glimpse;
1462 lock->l_weigh_ast = cbs->lcs_weigh;
1465 lock->l_tree_node = NULL;
1466 /* if this is the extent lock, allocate the interval tree node */
1467 if (type == LDLM_EXTENT) {
1468 if (ldlm_interval_alloc(lock) == NULL)
1473 lock->l_lvb_len = lvb_len;
1474 OBD_ALLOC(lock->l_lvb_data, lvb_len);
1475 if (lock->l_lvb_data == NULL)
1479 lock->l_lvb_type = lvb_type;
1480 if (OBD_FAIL_CHECK(OBD_FAIL_LDLM_NEW_LOCK))
1486 ldlm_lock_destroy(lock);
1487 LDLM_LOCK_RELEASE(lock);
1491 ldlm_error_t ldlm_lock_enqueue(struct ldlm_namespace *ns,
1492 struct ldlm_lock **lockp,
1493 void *cookie, __u64 *flags)
1495 struct ldlm_lock *lock = *lockp;
1496 struct ldlm_resource *res = lock->l_resource;
1497 int local = ns_is_client(ldlm_res_to_ns(res));
1498 #ifdef HAVE_SERVER_SUPPORT
1499 ldlm_processing_policy policy;
1501 ldlm_error_t rc = ELDLM_OK;
1502 struct ldlm_interval *node = NULL;
1505 lock->l_last_activity = cfs_time_current_sec();
1506 /* policies are not executed on the client or during replay */
1507 if ((*flags & (LDLM_FL_HAS_INTENT|LDLM_FL_REPLAY)) == LDLM_FL_HAS_INTENT
1508 && !local && ns->ns_policy) {
1509 rc = ns->ns_policy(ns, lockp, cookie, lock->l_req_mode, *flags,
1511 if (rc == ELDLM_LOCK_REPLACED) {
1512 /* The lock that was returned has already been granted,
1513 * and placed into lockp. If it's not the same as the
1514 * one we passed in, then destroy the old one and our
1515 * work here is done. */
1516 if (lock != *lockp) {
1517 ldlm_lock_destroy(lock);
1518 LDLM_LOCK_RELEASE(lock);
1520 *flags |= LDLM_FL_LOCK_CHANGED;
1522 } else if (rc != ELDLM_OK ||
1523 (rc == ELDLM_OK && (*flags & LDLM_FL_INTENT_ONLY))) {
1524 ldlm_lock_destroy(lock);
1529 /* For a replaying lock, it might be already in granted list. So
1530 * unlinking the lock will cause the interval node to be freed, we
1531 * have to allocate the interval node early otherwise we can't regrant
1532 * this lock in the future. - jay */
1533 if (!local && (*flags & LDLM_FL_REPLAY) && res->lr_type == LDLM_EXTENT)
1534 OBD_SLAB_ALLOC_PTR_GFP(node, ldlm_interval_slab, CFS_ALLOC_IO);
1536 lock_res_and_lock(lock);
1537 if (local && lock->l_req_mode == lock->l_granted_mode) {
1538 /* The server returned a blocked lock, but it was granted
1539 * before we got a chance to actually enqueue it. We don't
1540 * need to do anything else. */
1541 *flags &= ~(LDLM_FL_BLOCK_GRANTED |
1542 LDLM_FL_BLOCK_CONV | LDLM_FL_BLOCK_WAIT);
1543 GOTO(out, ELDLM_OK);
1546 ldlm_resource_unlink_lock(lock);
1547 if (res->lr_type == LDLM_EXTENT && lock->l_tree_node == NULL) {
1549 ldlm_lock_destroy_nolock(lock);
1550 GOTO(out, rc = -ENOMEM);
1553 CFS_INIT_LIST_HEAD(&node->li_group);
1554 ldlm_interval_attach(node, lock);
1558 /* Some flags from the enqueue want to make it into the AST, via the
1559 * lock's l_flags. */
1560 lock->l_flags |= *flags & LDLM_AST_DISCARD_DATA;
1562 /* This distinction between local lock trees is very important; a client
1563 * namespace only has information about locks taken by that client, and
1564 * thus doesn't have enough information to decide for itself if it can
1565 * be granted (below). In this case, we do exactly what the server
1566 * tells us to do, as dictated by the 'flags'.
1568 * We do exactly the same thing during recovery, when the server is
1569 * more or less trusting the clients not to lie.
1571 * FIXME (bug 268): Detect obvious lies by checking compatibility in
1572 * granted/converting queues. */
1574 if (*flags & LDLM_FL_BLOCK_CONV)
1575 ldlm_resource_add_lock(res, &res->lr_converting, lock);
1576 else if (*flags & (LDLM_FL_BLOCK_WAIT | LDLM_FL_BLOCK_GRANTED))
1577 ldlm_resource_add_lock(res, &res->lr_waiting, lock);
1579 ldlm_grant_lock(lock, NULL);
1580 GOTO(out, ELDLM_OK);
1581 #ifdef HAVE_SERVER_SUPPORT
1582 } else if (*flags & LDLM_FL_REPLAY) {
1583 if (*flags & LDLM_FL_BLOCK_CONV) {
1584 ldlm_resource_add_lock(res, &res->lr_converting, lock);
1585 GOTO(out, ELDLM_OK);
1586 } else if (*flags & LDLM_FL_BLOCK_WAIT) {
1587 ldlm_resource_add_lock(res, &res->lr_waiting, lock);
1588 GOTO(out, ELDLM_OK);
1589 } else if (*flags & LDLM_FL_BLOCK_GRANTED) {
1590 ldlm_grant_lock(lock, NULL);
1591 GOTO(out, ELDLM_OK);
1593 /* If no flags, fall through to normal enqueue path. */
1596 policy = ldlm_processing_policy_table[res->lr_type];
1597 policy(lock, flags, 1, &rc, NULL);
1601 CERROR("This is client-side-only module, cannot handle "
1602 "LDLM_NAMESPACE_SERVER resource type lock.\n");
1608 unlock_res_and_lock(lock);
1610 OBD_SLAB_FREE(node, ldlm_interval_slab, sizeof(*node));
1614 #ifdef HAVE_SERVER_SUPPORT
1615 /* Must be called with namespace taken: queue is waiting or converting. */
1616 int ldlm_reprocess_queue(struct ldlm_resource *res, cfs_list_t *queue,
1617 cfs_list_t *work_list)
1619 cfs_list_t *tmp, *pos;
1620 ldlm_processing_policy policy;
1622 int rc = LDLM_ITER_CONTINUE;
1626 check_res_locked(res);
1628 policy = ldlm_processing_policy_table[res->lr_type];
1631 cfs_list_for_each_safe(tmp, pos, queue) {
1632 struct ldlm_lock *pending;
1633 pending = cfs_list_entry(tmp, struct ldlm_lock, l_res_link);
1635 CDEBUG(D_INFO, "Reprocessing lock %p\n", pending);
1638 rc = policy(pending, &flags, 0, &err, work_list);
1639 if (rc != LDLM_ITER_CONTINUE)
1648 ldlm_work_bl_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
1650 struct ldlm_cb_set_arg *arg = opaq;
1651 struct ldlm_lock_desc d;
1653 struct ldlm_lock *lock;
1656 if (cfs_list_empty(arg->list))
1659 lock = cfs_list_entry(arg->list->next, struct ldlm_lock, l_bl_ast);
1661 /* nobody should touch l_bl_ast */
1662 lock_res_and_lock(lock);
1663 cfs_list_del_init(&lock->l_bl_ast);
1665 LASSERT(lock->l_flags & LDLM_FL_AST_SENT);
1666 LASSERT(lock->l_bl_ast_run == 0);
1667 LASSERT(lock->l_blocking_lock);
1668 lock->l_bl_ast_run++;
1669 unlock_res_and_lock(lock);
1671 ldlm_lock2desc(lock->l_blocking_lock, &d);
1673 rc = lock->l_blocking_ast(lock, &d, (void *)arg, LDLM_CB_BLOCKING);
1674 LDLM_LOCK_RELEASE(lock->l_blocking_lock);
1675 lock->l_blocking_lock = NULL;
1676 LDLM_LOCK_RELEASE(lock);
1682 ldlm_work_cp_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
1684 struct ldlm_cb_set_arg *arg = opaq;
1686 struct ldlm_lock *lock;
1687 ldlm_completion_callback completion_callback;
1690 if (cfs_list_empty(arg->list))
1693 lock = cfs_list_entry(arg->list->next, struct ldlm_lock, l_cp_ast);
1695 /* It's possible to receive a completion AST before we've set
1696 * the l_completion_ast pointer: either because the AST arrived
1697 * before the reply, or simply because there's a small race
1698 * window between receiving the reply and finishing the local
1699 * enqueue. (bug 842)
1701 * This can't happen with the blocking_ast, however, because we
1702 * will never call the local blocking_ast until we drop our
1703 * reader/writer reference, which we won't do until we get the
1704 * reply and finish enqueueing. */
1706 /* nobody should touch l_cp_ast */
1707 lock_res_and_lock(lock);
1708 cfs_list_del_init(&lock->l_cp_ast);
1709 LASSERT(lock->l_flags & LDLM_FL_CP_REQD);
1710 /* save l_completion_ast since it can be changed by
1711 * mds_intent_policy(), see bug 14225 */
1712 completion_callback = lock->l_completion_ast;
1713 lock->l_flags &= ~LDLM_FL_CP_REQD;
1714 unlock_res_and_lock(lock);
1716 if (completion_callback != NULL)
1717 rc = completion_callback(lock, 0, (void *)arg);
1718 LDLM_LOCK_RELEASE(lock);
1724 ldlm_work_revoke_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
1726 struct ldlm_cb_set_arg *arg = opaq;
1727 struct ldlm_lock_desc desc;
1729 struct ldlm_lock *lock;
1732 if (cfs_list_empty(arg->list))
1735 lock = cfs_list_entry(arg->list->next, struct ldlm_lock, l_rk_ast);
1736 cfs_list_del_init(&lock->l_rk_ast);
1738 /* the desc just pretend to exclusive */
1739 ldlm_lock2desc(lock, &desc);
1740 desc.l_req_mode = LCK_EX;
1741 desc.l_granted_mode = 0;
1743 rc = lock->l_blocking_ast(lock, &desc, (void*)arg, LDLM_CB_BLOCKING);
1744 LDLM_LOCK_RELEASE(lock);
1749 int ldlm_work_gl_ast_lock(struct ptlrpc_request_set *rqset, void *opaq)
1751 struct ldlm_cb_set_arg *arg = opaq;
1752 struct ldlm_glimpse_work *gl_work;
1753 struct ldlm_lock *lock;
1757 if (cfs_list_empty(arg->list))
1760 gl_work = cfs_list_entry(arg->list->next, struct ldlm_glimpse_work,
1762 cfs_list_del_init(&gl_work->gl_list);
1764 lock = gl_work->gl_lock;
1766 /* transfer the glimpse descriptor to ldlm_cb_set_arg */
1767 arg->gl_desc = gl_work->gl_desc;
1769 /* invoke the actual glimpse callback */
1770 if (lock->l_glimpse_ast(lock, (void*)arg) == 0)
1773 LDLM_LOCK_RELEASE(lock);
1775 if ((gl_work->gl_flags & LDLM_GL_WORK_NOFREE) == 0)
1776 OBD_FREE_PTR(gl_work);
1781 int ldlm_run_ast_work(struct ldlm_namespace *ns, cfs_list_t *rpc_list,
1782 ldlm_desc_ast_t ast_type)
1784 struct ldlm_cb_set_arg *arg;
1785 set_producer_func work_ast_lock;
1788 if (cfs_list_empty(rpc_list))
1795 cfs_atomic_set(&arg->restart, 0);
1796 arg->list = rpc_list;
1799 case LDLM_WORK_BL_AST:
1800 arg->type = LDLM_BL_CALLBACK;
1801 work_ast_lock = ldlm_work_bl_ast_lock;
1803 case LDLM_WORK_CP_AST:
1804 arg->type = LDLM_CP_CALLBACK;
1805 work_ast_lock = ldlm_work_cp_ast_lock;
1807 case LDLM_WORK_REVOKE_AST:
1808 arg->type = LDLM_BL_CALLBACK;
1809 work_ast_lock = ldlm_work_revoke_ast_lock;
1811 case LDLM_WORK_GL_AST:
1812 arg->type = LDLM_GL_CALLBACK;
1813 work_ast_lock = ldlm_work_gl_ast_lock;
1819 /* We create a ptlrpc request set with flow control extension.
1820 * This request set will use the work_ast_lock function to produce new
1821 * requests and will send a new request each time one completes in order
1822 * to keep the number of requests in flight to ns_max_parallel_ast */
1823 arg->set = ptlrpc_prep_fcset(ns->ns_max_parallel_ast ? : UINT_MAX,
1824 work_ast_lock, arg);
1825 if (arg->set == NULL)
1826 GOTO(out, rc = -ENOMEM);
1828 ptlrpc_set_wait(arg->set);
1829 ptlrpc_set_destroy(arg->set);
1831 rc = cfs_atomic_read(&arg->restart) ? -ERESTART : 0;
1838 static int reprocess_one_queue(struct ldlm_resource *res, void *closure)
1840 ldlm_reprocess_all(res);
1841 return LDLM_ITER_CONTINUE;
1844 static int ldlm_reprocess_res(cfs_hash_t *hs, cfs_hash_bd_t *bd,
1845 cfs_hlist_node_t *hnode, void *arg)
1847 struct ldlm_resource *res = cfs_hash_object(hs, hnode);
1850 rc = reprocess_one_queue(res, arg);
1852 return rc == LDLM_ITER_STOP;
1855 void ldlm_reprocess_all_ns(struct ldlm_namespace *ns)
1860 cfs_hash_for_each_nolock(ns->ns_rs_hash,
1861 ldlm_reprocess_res, NULL);
1865 EXPORT_SYMBOL(ldlm_reprocess_all_ns);
1867 void ldlm_reprocess_all(struct ldlm_resource *res)
1869 CFS_LIST_HEAD(rpc_list);
1871 #ifdef HAVE_SERVER_SUPPORT
1874 /* Local lock trees don't get reprocessed. */
1875 if (ns_is_client(ldlm_res_to_ns(res))) {
1882 rc = ldlm_reprocess_queue(res, &res->lr_converting, &rpc_list);
1883 if (rc == LDLM_ITER_CONTINUE)
1884 ldlm_reprocess_queue(res, &res->lr_waiting, &rpc_list);
1887 rc = ldlm_run_ast_work(ldlm_res_to_ns(res), &rpc_list,
1889 if (rc == -ERESTART) {
1890 LASSERT(cfs_list_empty(&rpc_list));
1895 if (!ns_is_client(ldlm_res_to_ns(res))) {
1896 CERROR("This is client-side-only module, cannot handle "
1897 "LDLM_NAMESPACE_SERVER resource type lock.\n");
1904 void ldlm_cancel_callback(struct ldlm_lock *lock)
1906 check_res_locked(lock->l_resource);
1907 if (!(lock->l_flags & LDLM_FL_CANCEL)) {
1908 lock->l_flags |= LDLM_FL_CANCEL;
1909 if (lock->l_blocking_ast) {
1910 // l_check_no_ns_lock(ns);
1911 unlock_res_and_lock(lock);
1912 lock->l_blocking_ast(lock, NULL, lock->l_ast_data,
1914 lock_res_and_lock(lock);
1916 LDLM_DEBUG(lock, "no blocking ast");
1919 lock->l_flags |= LDLM_FL_BL_DONE;
1922 void ldlm_unlink_lock_skiplist(struct ldlm_lock *req)
1924 if (req->l_resource->lr_type != LDLM_PLAIN &&
1925 req->l_resource->lr_type != LDLM_IBITS)
1928 cfs_list_del_init(&req->l_sl_policy);
1929 cfs_list_del_init(&req->l_sl_mode);
1932 void ldlm_lock_cancel(struct ldlm_lock *lock)
1934 struct ldlm_resource *res;
1935 struct ldlm_namespace *ns;
1938 lock_res_and_lock(lock);
1940 res = lock->l_resource;
1941 ns = ldlm_res_to_ns(res);
1943 /* Please do not, no matter how tempting, remove this LBUG without
1944 * talking to me first. -phik */
1945 if (lock->l_readers || lock->l_writers) {
1946 LDLM_ERROR(lock, "lock still has references");
1951 ldlm_del_waiting_lock(lock);
1953 /* Releases cancel callback. */
1954 ldlm_cancel_callback(lock);
1956 /* Yes, second time, just in case it was added again while we were
1957 running with no res lock in ldlm_cancel_callback */
1959 ldlm_del_waiting_lock(lock);
1961 ldlm_resource_unlink_lock(lock);
1962 ldlm_lock_destroy_nolock(lock);
1964 if (lock->l_granted_mode == lock->l_req_mode)
1965 ldlm_pool_del(&ns->ns_pool, lock);
1967 /* Make sure we will not be called again for same lock what is possible
1968 * if not to zero out lock->l_granted_mode */
1969 lock->l_granted_mode = LCK_MINMODE;
1970 unlock_res_and_lock(lock);
1974 EXPORT_SYMBOL(ldlm_lock_cancel);
1976 int ldlm_lock_set_data(struct lustre_handle *lockh, void *data)
1978 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
1983 if (lock->l_ast_data == NULL)
1984 lock->l_ast_data = data;
1985 if (lock->l_ast_data == data)
1987 LDLM_LOCK_PUT(lock);
1991 EXPORT_SYMBOL(ldlm_lock_set_data);
1993 struct export_cl_data {
1994 struct obd_export *ecl_exp;
1998 int ldlm_cancel_locks_for_export_cb(cfs_hash_t *hs, cfs_hash_bd_t *bd,
1999 cfs_hlist_node_t *hnode, void *data)
2002 struct export_cl_data *ecl = (struct export_cl_data *)data;
2003 struct obd_export *exp = ecl->ecl_exp;
2004 struct ldlm_lock *lock = cfs_hash_object(hs, hnode);
2005 struct ldlm_resource *res;
2007 res = ldlm_resource_getref(lock->l_resource);
2008 LDLM_LOCK_GET(lock);
2010 LDLM_DEBUG(lock, "export %p", exp);
2011 ldlm_res_lvbo_update(res, NULL, 1);
2012 ldlm_lock_cancel(lock);
2013 ldlm_reprocess_all(res);
2014 ldlm_resource_putref(res);
2015 LDLM_LOCK_RELEASE(lock);
2018 if ((ecl->ecl_loop & -ecl->ecl_loop) == ecl->ecl_loop) {
2020 "Cancel lock %p for export %p (loop %d), still have "
2021 "%d locks left on hash table.\n",
2022 lock, exp, ecl->ecl_loop,
2023 cfs_atomic_read(&hs->hs_count));
2029 void ldlm_cancel_locks_for_export(struct obd_export *exp)
2031 struct export_cl_data ecl = {
2036 cfs_hash_for_each_empty(exp->exp_lock_hash,
2037 ldlm_cancel_locks_for_export_cb, &ecl);
2041 * Downgrade an exclusive lock.
2043 * A fast variant of ldlm_lock_convert for convertion of exclusive
2044 * locks. The convertion is always successful.
2046 * \param lock A lock to convert
2047 * \param new_mode new lock mode
2049 void ldlm_lock_downgrade(struct ldlm_lock *lock, int new_mode)
2053 LASSERT(lock->l_granted_mode & (LCK_PW | LCK_EX));
2054 LASSERT(new_mode == LCK_COS);
2056 lock_res_and_lock(lock);
2057 ldlm_resource_unlink_lock(lock);
2059 * Remove the lock from pool as it will be added again in
2060 * ldlm_grant_lock() called below.
2062 ldlm_pool_del(&ldlm_lock_to_ns(lock)->ns_pool, lock);
2064 lock->l_req_mode = new_mode;
2065 ldlm_grant_lock(lock, NULL);
2066 unlock_res_and_lock(lock);
2067 ldlm_reprocess_all(lock->l_resource);
2071 EXPORT_SYMBOL(ldlm_lock_downgrade);
2073 struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
2076 CFS_LIST_HEAD(rpc_list);
2077 struct ldlm_resource *res;
2078 struct ldlm_namespace *ns;
2080 #ifdef HAVE_SERVER_SUPPORT
2082 struct sl_insert_point prev;
2084 struct ldlm_interval *node;
2087 if (new_mode == lock->l_granted_mode) { // No changes? Just return.
2088 *flags |= LDLM_FL_BLOCK_GRANTED;
2089 RETURN(lock->l_resource);
2092 /* I can't check the type of lock here because the bitlock of lock
2093 * is not held here, so do the allocation blindly. -jay */
2094 OBD_SLAB_ALLOC_PTR_GFP(node, ldlm_interval_slab, CFS_ALLOC_IO);
2095 if (node == NULL) /* Actually, this causes EDEADLOCK to be returned */
2098 LASSERTF((new_mode == LCK_PW && lock->l_granted_mode == LCK_PR),
2099 "new_mode %u, granted %u\n", new_mode, lock->l_granted_mode);
2101 lock_res_and_lock(lock);
2103 res = lock->l_resource;
2104 ns = ldlm_res_to_ns(res);
2106 #ifdef HAVE_SERVER_SUPPORT
2107 old_mode = lock->l_req_mode;
2109 lock->l_req_mode = new_mode;
2110 if (res->lr_type == LDLM_PLAIN || res->lr_type == LDLM_IBITS) {
2111 #ifdef HAVE_SERVER_SUPPORT
2112 /* remember the lock position where the lock might be
2113 * added back to the granted list later and also
2114 * remember the join mode for skiplist fixing. */
2115 prev.res_link = lock->l_res_link.prev;
2116 prev.mode_link = lock->l_sl_mode.prev;
2117 prev.policy_link = lock->l_sl_policy.prev;
2119 ldlm_resource_unlink_lock(lock);
2121 ldlm_resource_unlink_lock(lock);
2122 if (res->lr_type == LDLM_EXTENT) {
2123 /* FIXME: ugly code, I have to attach the lock to a
2124 * interval node again since perhaps it will be granted
2126 CFS_INIT_LIST_HEAD(&node->li_group);
2127 ldlm_interval_attach(node, lock);
2133 * Remove old lock from the pool before adding the lock with new
2134 * mode below in ->policy()
2136 ldlm_pool_del(&ns->ns_pool, lock);
2138 /* If this is a local resource, put it on the appropriate list. */
2139 if (ns_is_client(ldlm_res_to_ns(res))) {
2140 if (*flags & (LDLM_FL_BLOCK_CONV | LDLM_FL_BLOCK_GRANTED)) {
2141 ldlm_resource_add_lock(res, &res->lr_converting, lock);
2143 /* This should never happen, because of the way the
2144 * server handles conversions. */
2145 LDLM_ERROR(lock, "Erroneous flags %x on local lock\n",
2149 ldlm_grant_lock(lock, &rpc_list);
2151 /* FIXME: completion handling not with lr_lock held ! */
2152 if (lock->l_completion_ast)
2153 lock->l_completion_ast(lock, 0, NULL);
2155 #ifdef HAVE_SERVER_SUPPORT
2160 ldlm_processing_policy policy;
2161 policy = ldlm_processing_policy_table[res->lr_type];
2162 rc = policy(lock, &pflags, 0, &err, &rpc_list);
2163 if (rc == LDLM_ITER_STOP) {
2164 lock->l_req_mode = old_mode;
2165 if (res->lr_type == LDLM_EXTENT)
2166 ldlm_extent_add_lock(res, lock);
2168 ldlm_granted_list_add_lock(lock, &prev);
2172 *flags |= LDLM_FL_BLOCK_GRANTED;
2178 CERROR("This is client-side-only module, cannot handle "
2179 "LDLM_NAMESPACE_SERVER resource type lock.\n");
2183 unlock_res_and_lock(lock);
2186 ldlm_run_ast_work(ns, &rpc_list, LDLM_WORK_CP_AST);
2188 OBD_SLAB_FREE(node, ldlm_interval_slab, sizeof(*node));
2191 EXPORT_SYMBOL(ldlm_lock_convert);
2193 void ldlm_lock_dump_handle(int level, struct lustre_handle *lockh)
2195 struct ldlm_lock *lock;
2197 if (!((libcfs_debug | D_ERROR) & level))
2200 lock = ldlm_handle2lock(lockh);
2204 LDLM_DEBUG_LIMIT(level, lock, "###");
2206 LDLM_LOCK_PUT(lock);
2208 EXPORT_SYMBOL(ldlm_lock_dump_handle);
2210 void _ldlm_lock_debug(struct ldlm_lock *lock,
2211 struct libcfs_debug_msg_data *msgdata,
2212 const char *fmt, ...)
2215 struct obd_export *exp = lock->l_export;
2216 struct ldlm_resource *resource = lock->l_resource;
2217 char *nid = "local";
2219 va_start(args, fmt);
2221 if (exp && exp->exp_connection) {
2222 nid = libcfs_nid2str(exp->exp_connection->c_peer.nid);
2223 } else if (exp && exp->exp_obd != NULL) {
2224 struct obd_import *imp = exp->exp_obd->u.cli.cl_import;
2225 nid = libcfs_nid2str(imp->imp_connection->c_peer.nid);
2228 if (resource == NULL) {
2229 libcfs_debug_vmsg2(msgdata, fmt, args,
2230 " ns: \?\? lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "
2231 "res: \?\? rrc=\?\? type: \?\?\? flags: "LPX64" nid: %s "
2232 "remote: "LPX64" expref: %d pid: %u timeout: %lu "
2235 lock->l_handle.h_cookie, cfs_atomic_read(&lock->l_refc),
2236 lock->l_readers, lock->l_writers,
2237 ldlm_lockname[lock->l_granted_mode],
2238 ldlm_lockname[lock->l_req_mode],
2239 lock->l_flags, nid, lock->l_remote_handle.cookie,
2240 exp ? cfs_atomic_read(&exp->exp_refcount) : -99,
2241 lock->l_pid, lock->l_callback_timeout, lock->l_lvb_type);
2246 switch (resource->lr_type) {
2248 libcfs_debug_vmsg2(msgdata, fmt, args,
2249 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "
2250 "res: "LPU64"/"LPU64" rrc: %d type: %s ["LPU64"->"LPU64
2251 "] (req "LPU64"->"LPU64") flags: "LPX64" nid: %s remote:"
2252 " "LPX64" expref: %d pid: %u timeout: %lu lvb_type: %d\n",
2253 ldlm_lock_to_ns_name(lock), lock,
2254 lock->l_handle.h_cookie, cfs_atomic_read(&lock->l_refc),
2255 lock->l_readers, lock->l_writers,
2256 ldlm_lockname[lock->l_granted_mode],
2257 ldlm_lockname[lock->l_req_mode],
2258 resource->lr_name.name[0],
2259 resource->lr_name.name[1],
2260 cfs_atomic_read(&resource->lr_refcount),
2261 ldlm_typename[resource->lr_type],
2262 lock->l_policy_data.l_extent.start,
2263 lock->l_policy_data.l_extent.end,
2264 lock->l_req_extent.start, lock->l_req_extent.end,
2265 lock->l_flags, nid, lock->l_remote_handle.cookie,
2266 exp ? cfs_atomic_read(&exp->exp_refcount) : -99,
2267 lock->l_pid, lock->l_callback_timeout, lock->l_lvb_type);
2271 libcfs_debug_vmsg2(msgdata, fmt, args,
2272 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "
2273 "res: "LPU64"/"LPU64" rrc: %d type: %s pid: %d "
2274 "["LPU64"->"LPU64"] flags: "LPX64" nid: %s remote: "LPX64
2275 " expref: %d pid: %u timeout: %lu\n",
2276 ldlm_lock_to_ns_name(lock), lock,
2277 lock->l_handle.h_cookie, cfs_atomic_read(&lock->l_refc),
2278 lock->l_readers, lock->l_writers,
2279 ldlm_lockname[lock->l_granted_mode],
2280 ldlm_lockname[lock->l_req_mode],
2281 resource->lr_name.name[0],
2282 resource->lr_name.name[1],
2283 cfs_atomic_read(&resource->lr_refcount),
2284 ldlm_typename[resource->lr_type],
2285 lock->l_policy_data.l_flock.pid,
2286 lock->l_policy_data.l_flock.start,
2287 lock->l_policy_data.l_flock.end,
2288 lock->l_flags, nid, lock->l_remote_handle.cookie,
2289 exp ? cfs_atomic_read(&exp->exp_refcount) : -99,
2290 lock->l_pid, lock->l_callback_timeout);
2294 libcfs_debug_vmsg2(msgdata, fmt, args,
2295 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "
2296 "res: "LPU64"/"LPU64" bits "LPX64" rrc: %d type: %s "
2297 "flags: "LPX64" nid: %s remote: "LPX64" expref: %d "
2298 "pid: %u timeout: %lu lvb_type: %d\n",
2299 ldlm_lock_to_ns_name(lock),
2300 lock, lock->l_handle.h_cookie,
2301 cfs_atomic_read (&lock->l_refc),
2302 lock->l_readers, lock->l_writers,
2303 ldlm_lockname[lock->l_granted_mode],
2304 ldlm_lockname[lock->l_req_mode],
2305 resource->lr_name.name[0],
2306 resource->lr_name.name[1],
2307 lock->l_policy_data.l_inodebits.bits,
2308 cfs_atomic_read(&resource->lr_refcount),
2309 ldlm_typename[resource->lr_type],
2310 lock->l_flags, nid, lock->l_remote_handle.cookie,
2311 exp ? cfs_atomic_read(&exp->exp_refcount) : -99,
2312 lock->l_pid, lock->l_callback_timeout, lock->l_lvb_type);
2316 libcfs_debug_vmsg2(msgdata, fmt, args,
2317 " ns: %s lock: %p/"LPX64" lrc: %d/%d,%d mode: %s/%s "
2318 "res: "LPU64"/"LPU64" rrc: %d type: %s flags: "LPX64" "
2319 "nid: %s remote: "LPX64" expref: %d pid: %u timeout: %lu"
2321 ldlm_lock_to_ns_name(lock),
2322 lock, lock->l_handle.h_cookie,
2323 cfs_atomic_read (&lock->l_refc),
2324 lock->l_readers, lock->l_writers,
2325 ldlm_lockname[lock->l_granted_mode],
2326 ldlm_lockname[lock->l_req_mode],
2327 resource->lr_name.name[0],
2328 resource->lr_name.name[1],
2329 cfs_atomic_read(&resource->lr_refcount),
2330 ldlm_typename[resource->lr_type],
2331 lock->l_flags, nid, lock->l_remote_handle.cookie,
2332 exp ? cfs_atomic_read(&exp->exp_refcount) : -99,
2333 lock->l_pid, lock->l_callback_timeout, lock->l_lvb_type);
2338 EXPORT_SYMBOL(_ldlm_lock_debug);