1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002 Cluster File Systems, Inc.
6 * This code is issued under the GNU General Public License.
7 * See the file COPYING in this distribution
9 * by Cluster File Systems, Inc.
10 * authors, Peter Braam <braam@clusterfs.com> &
11 * Phil Schwan <phil@clusterfs.com>
14 #define DEBUG_SUBSYSTEM S_LDLM
16 #include <linux/slab.h>
17 #include <linux/module.h>
18 #include <linux/random.h>
19 #include <linux/lustre_dlm.h>
20 #include <linux/lustre_mds.h>
23 char *ldlm_lockname[] = {
32 char *ldlm_typename[] = {
35 [LDLM_MDSINTENT] "INT"
38 extern kmem_cache_t *ldlm_lock_slab;
39 int (*mds_reint_p)(int offset, struct ptlrpc_request *req) = NULL;
40 int (*mds_getattr_name_p)(int offset, struct ptlrpc_request *req) = NULL;
42 static int ldlm_plain_compat(struct ldlm_lock *a, struct ldlm_lock *b);
43 static int ldlm_intent_policy(struct ldlm_lock *lock, void *req_cookie,
44 ldlm_mode_t mode, void *data);
46 ldlm_res_compat ldlm_res_compat_table [] = {
47 [LDLM_PLAIN] ldlm_plain_compat,
48 [LDLM_EXTENT] ldlm_extent_compat,
49 [LDLM_MDSINTENT] ldlm_plain_compat
52 ldlm_res_policy ldlm_res_policy_table [] = {
54 [LDLM_EXTENT] ldlm_extent_policy,
55 [LDLM_MDSINTENT] ldlm_intent_policy
60 * REFCOUNTED LOCK OBJECTS
65 * Lock refcounts, during creation:
66 * - one special one for allocation, dec'd only once in destroy
67 * - one for being a lock that's in-use
68 * - one for the addref associated with a new lock
70 struct ldlm_lock *ldlm_lock_get(struct ldlm_lock *lock)
72 l_lock(&lock->l_resource->lr_namespace->ns_lock);
74 ldlm_resource_getref(lock->l_resource);
75 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
79 void ldlm_lock_put(struct ldlm_lock *lock)
81 struct lustre_lock *nslock = &lock->l_resource->lr_namespace->ns_lock;
86 LDLM_DEBUG(lock, "after refc--");
90 ldlm_resource_put(lock->l_resource);
92 LDLM_LOCK_PUT(lock->l_parent);
94 if (lock->l_refc == 0 && (lock->l_flags & LDLM_FL_DESTROYED)) {
95 lock->l_resource = NULL;
96 LDLM_DEBUG(lock, "final lock_put on destroyed lock, freeing");
97 if (lock->l_connection)
98 ptlrpc_put_connection(lock->l_connection);
99 CDEBUG(D_MALLOC, "kfreed 'lock': %d at %p (tot 1).\n",
100 sizeof(*lock), lock);
101 kmem_cache_free(ldlm_lock_slab, lock);
107 void ldlm_lock_destroy(struct ldlm_lock *lock)
110 l_lock(&lock->l_resource->lr_namespace->ns_lock);
112 if (!list_empty(&lock->l_children)) {
113 LDLM_DEBUG(lock, "still has children (%p)!",
114 lock->l_children.next);
115 ldlm_lock_dump(lock);
118 if (lock->l_readers || lock->l_writers) {
119 LDLM_DEBUG(lock, "lock still has references");
120 ldlm_lock_dump(lock);
124 if (!list_empty(&lock->l_res_link)) {
125 ldlm_lock_dump(lock);
129 if (lock->l_flags & LDLM_FL_DESTROYED) {
130 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
135 lock->l_flags = LDLM_FL_DESTROYED;
136 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
142 usage: pass in a resource on which you have done get
143 pass in a parent lock on which you have done a get
144 do not put the resource or the parent
145 returns: lock with refcount 1
147 static struct ldlm_lock *ldlm_lock_new(struct ldlm_lock *parent,
148 struct ldlm_resource *resource)
150 struct ldlm_lock *lock;
153 if (resource == NULL)
156 lock = kmem_cache_alloc(ldlm_lock_slab, SLAB_KERNEL);
159 CDEBUG(D_MALLOC, "kmalloced 'lock': %d at "
160 "%p (tot %d).\n", sizeof(*lock), lock, 1);
162 memset(lock, 0, sizeof(*lock));
163 get_random_bytes(&lock->l_random, sizeof(__u64));
165 lock->l_resource = resource;
166 /* this refcount matches the one of the resource passed
167 in which is not being put away */
169 INIT_LIST_HEAD(&lock->l_children);
170 INIT_LIST_HEAD(&lock->l_res_link);
171 init_waitqueue_head(&lock->l_waitq);
173 if (parent != NULL) {
174 l_lock(&parent->l_resource->lr_namespace->ns_lock);
175 lock->l_parent = parent;
176 list_add(&lock->l_childof, &parent->l_children);
177 l_unlock(&parent->l_resource->lr_namespace->ns_lock);
179 /* this is the extra refcount, to prevent the lock
185 int ldlm_lock_change_resource(struct ldlm_lock *lock, __u64 new_resid[3])
187 struct ldlm_namespace *ns = lock->l_resource->lr_namespace;
188 struct ldlm_resource *oldres = lock->l_resource;
192 l_lock(&ns->ns_lock);
193 type = lock->l_resource->lr_type;
195 lock->l_resource = ldlm_resource_get(ns, NULL, new_resid, type, 1);
196 if (lock->l_resource == NULL) {
201 /* move references over */
202 for (i = 0; i < lock->l_refc; i++) {
204 ldlm_resource_getref(lock->l_resource);
205 rc = ldlm_resource_put(oldres);
206 if (rc == 1 && i != lock->l_refc - 1)
209 /* compensate for the initial get above.. */
210 ldlm_resource_put(lock->l_resource);
212 l_unlock(&ns->ns_lock);
220 void ldlm_lock2handle(struct ldlm_lock *lock, struct lustre_handle *lockh)
222 lockh->addr = (__u64)(unsigned long)lock;
223 lockh->cookie = lock->l_random;
226 struct ldlm_lock *ldlm_handle2lock(struct lustre_handle *handle)
228 struct ldlm_lock *lock = NULL, *retval = NULL;
231 if (!handle || !handle->addr)
234 lock = (struct ldlm_lock *)(unsigned long)(handle->addr);
235 if (!kmem_cache_validate(ldlm_lock_slab, (void *)lock))
238 l_lock(&lock->l_resource->lr_namespace->ns_lock);
239 if (lock->l_random != handle->cookie)
242 if (lock->l_flags & LDLM_FL_DESTROYED)
245 retval = LDLM_LOCK_GET(lock);
248 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
254 static int ldlm_intent_policy(struct ldlm_lock *lock, void *req_cookie,
255 ldlm_mode_t mode, void *data)
257 struct ptlrpc_request *req = req_cookie;
264 if (req->rq_reqmsg->bufcount > 1) {
265 /* an intent needs to be considered */
266 struct ldlm_intent *it = lustre_msg_buf(req->rq_reqmsg, 1);
267 struct mds_body *mds_rep;
268 struct ldlm_reply *rep;
269 __u64 new_resid[3] = {0, 0, 0}, old_res;
270 int bufcount = -1, rc, size[3] = {sizeof(struct ldlm_reply),
271 sizeof(struct mds_body),
272 sizeof(struct obdo)};
274 it->opc = NTOH__u64(it->opc);
276 LDLM_DEBUG(lock, "intent policy, opc: %Ld", it->opc);
281 /* Note that in the negative case you may be returning
282 * a file and its obdo */
284 case IT_CREAT|IT_OPEN:
297 size[1] = sizeof(struct obdo);
307 rc = lustre_pack_msg(bufcount, size, NULL, &req->rq_replen,
310 rc = req->rq_status = -ENOMEM;
314 rep = lustre_msg_buf(req->rq_repmsg, 0);
315 rep->lock_policy_res1 = 1;
320 case IT_CREAT|IT_OPEN:
328 rc = mds_reint_p(2, req);
329 if (rc || req->rq_status != 0) {
330 rep->lock_policy_res2 = req->rq_status;
331 RETURN(ELDLM_LOCK_ABORTED);
340 rc = mds_getattr_name_p(2, req);
341 /* FIXME: we need to sit down and decide on who should
342 * set req->rq_status, who should return negative and
343 * positive return values, and what they all mean. */
344 if (rc || req->rq_status != 0) {
345 rep->lock_policy_res2 = req->rq_status;
346 RETURN(ELDLM_LOCK_ABORTED);
349 case IT_READDIR|IT_OPEN:
353 CERROR("Unhandled intent\n");
357 if (it->opc == IT_UNLINK || it->opc == IT_RMDIR ||
358 it->opc == IT_RENAME || it->opc == IT_RENAME2)
359 RETURN(ELDLM_LOCK_ABORTED);
361 rep->lock_policy_res2 = req->rq_status;
362 mds_rep = lustre_msg_buf(req->rq_repmsg, 1);
363 new_resid[0] = NTOH__u32(mds_rep->ino);
364 if (new_resid[0] == 0)
366 old_res = lock->l_resource->lr_name[0];
368 CDEBUG(D_INFO, "remote intent: locking %d instead of"
369 "%ld\n", mds_rep->ino, (long)old_res);
371 ldlm_lock_change_resource(lock, new_resid);
372 if (lock->l_resource == NULL) {
376 LDLM_DEBUG(lock, "intent policy, old res %ld",
378 RETURN(ELDLM_LOCK_CHANGED);
380 int size = sizeof(struct ldlm_reply);
381 rc = lustre_pack_msg(1, &size, NULL, &req->rq_replen,
384 CERROR("out of memory\n");
392 static int ldlm_plain_compat(struct ldlm_lock *a, struct ldlm_lock *b)
394 return lockmode_compat(a->l_req_mode, b->l_req_mode);
397 void ldlm_lock2desc(struct ldlm_lock *lock, struct ldlm_lock_desc *desc)
399 ldlm_res2desc(lock->l_resource, &desc->l_resource);
400 desc->l_req_mode = lock->l_req_mode;
401 desc->l_granted_mode = lock->l_granted_mode;
402 memcpy(&desc->l_extent, &lock->l_extent, sizeof(desc->l_extent));
403 memcpy(desc->l_version, lock->l_version, sizeof(desc->l_version));
406 static void ldlm_add_ast_work_item(struct ldlm_lock *lock,
407 struct ldlm_lock *new)
409 struct ldlm_ast_work *w;
412 l_lock(&lock->l_resource->lr_namespace->ns_lock);
413 if (new && (lock->l_flags & LDLM_FL_AST_SENT))
416 OBD_ALLOC(w, sizeof(*w));
423 lock->l_flags |= LDLM_FL_AST_SENT;
425 ldlm_lock2desc(new, &w->w_desc);
428 w->w_lock = LDLM_LOCK_GET(lock);
429 list_add(&w->w_list, lock->l_resource->lr_tmp);
431 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
435 void ldlm_lock_addref(struct lustre_handle *lockh, __u32 mode)
437 struct ldlm_lock *lock;
439 lock = ldlm_handle2lock(lockh);
440 ldlm_lock_addref_internal(lock, mode);
444 /* only called for local locks */
445 void ldlm_lock_addref_internal(struct ldlm_lock *lock, __u32 mode)
447 l_lock(&lock->l_resource->lr_namespace->ns_lock);
448 if (mode == LCK_NL || mode == LCK_CR || mode == LCK_PR)
452 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
454 LDLM_DEBUG(lock, "ldlm_lock_addref(%s)", ldlm_lockname[mode]);
457 /* Args: unlocked lock */
458 void ldlm_lock_decref(struct lustre_handle *lockh, __u32 mode)
460 struct ldlm_lock *lock = ldlm_handle2lock(lockh);
466 LDLM_DEBUG(lock, "ldlm_lock_decref(%s)", ldlm_lockname[mode]);
467 l_lock(&lock->l_resource->lr_namespace->ns_lock);
468 if (mode == LCK_NL || mode == LCK_CR || mode == LCK_PR)
473 /* If we received a blocked AST and this was the last reference,
474 * run the callback. */
475 if (!lock->l_readers && !lock->l_writers &&
476 (lock->l_flags & LDLM_FL_CBPENDING)) {
477 struct lustre_handle lockh;
479 if (!lock->l_resource->lr_namespace->ns_client) {
480 CERROR("LDLM_FL_CBPENDING set on non-local lock!\n");
484 LDLM_DEBUG(lock, "final decref done on cbpending lock");
485 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
487 ldlm_lock2handle(lock, &lockh);
488 /* FIXME: -1 is a really, really bad 'desc' */
489 lock->l_blocking_ast(&lockh, (void *)-1, lock->l_data,
492 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
494 LDLM_LOCK_PUT(lock); /* matches the ldlm_lock_get in addref */
495 LDLM_LOCK_PUT(lock); /* matches the handle2lock above */
500 static int ldlm_lock_compat_list(struct ldlm_lock *lock, int send_cbs,
501 struct list_head *queue)
503 struct list_head *tmp, *pos;
506 list_for_each_safe(tmp, pos, queue) {
507 struct ldlm_lock *child;
508 ldlm_res_compat compat;
510 child = list_entry(tmp, struct ldlm_lock, l_res_link);
514 compat = ldlm_res_compat_table[child->l_resource->lr_type];
515 if (compat && compat(child, lock)) {
516 CDEBUG(D_OTHER, "compat function succeded, next.\n");
519 if (lockmode_compat(child->l_granted_mode, lock->l_req_mode)) {
520 CDEBUG(D_OTHER, "lock modes are compatible, next.\n");
526 if (send_cbs && child->l_blocking_ast != NULL) {
527 CDEBUG(D_OTHER, "incompatible; sending blocking "
529 ldlm_add_ast_work_item(child, lock);
536 static int ldlm_lock_compat(struct ldlm_lock *lock, int send_cbs)
541 l_lock(&lock->l_resource->lr_namespace->ns_lock);
542 rc = ldlm_lock_compat_list(lock, send_cbs,
543 &lock->l_resource->lr_granted);
544 /* FIXME: should we be sending ASTs to converting? */
546 rc = ldlm_lock_compat_list
547 (lock, send_cbs, &lock->l_resource->lr_converting);
549 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
554 - ldlm_handle_enqueuque - resource
556 void ldlm_grant_lock(struct ldlm_lock *lock)
558 struct ldlm_resource *res = lock->l_resource;
561 l_lock(&lock->l_resource->lr_namespace->ns_lock);
562 ldlm_resource_add_lock(res, &res->lr_granted, lock);
563 lock->l_granted_mode = lock->l_req_mode;
565 if (lock->l_granted_mode < res->lr_most_restr)
566 res->lr_most_restr = lock->l_granted_mode;
568 if (lock->l_completion_ast) {
569 ldlm_add_ast_work_item(lock, NULL);
571 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
575 static struct ldlm_lock *search_queue(struct list_head *queue, ldlm_mode_t mode,
576 struct ldlm_extent *extent)
578 struct ldlm_lock *lock;
579 struct list_head *tmp;
581 list_for_each(tmp, queue) {
582 lock = list_entry(tmp, struct ldlm_lock, l_res_link);
584 if (lock->l_flags & LDLM_FL_CBPENDING)
587 /* lock_convert() takes the resource lock, so we're sure that
588 * req_mode, lr_type, and l_cookie won't change beneath us */
589 if (lock->l_req_mode != mode)
592 if (lock->l_resource->lr_type == LDLM_EXTENT &&
593 (lock->l_extent.start > extent->start ||
594 lock->l_extent.end < extent->end))
597 ldlm_lock_addref_internal(lock, mode);
604 /* Must be called with no resource or lock locks held.
606 * Returns 1 if it finds an already-existing lock that is compatible; in this
607 * case, lockh is filled in with a addref()ed lock */
608 int ldlm_lock_match(struct ldlm_namespace *ns, __u64 *res_id, __u32 type,
609 void *cookie, int cookielen, ldlm_mode_t mode,
610 struct lustre_handle *lockh)
612 struct ldlm_resource *res;
613 struct ldlm_lock *lock;
617 res = ldlm_resource_get(ns, NULL, res_id, type, 0);
621 ns = res->lr_namespace;
622 l_lock(&ns->ns_lock);
624 if ((lock = search_queue(&res->lr_granted, mode, cookie)))
626 if ((lock = search_queue(&res->lr_converting, mode, cookie)))
628 if ((lock = search_queue(&res->lr_waiting, mode, cookie)))
633 ldlm_resource_put(res);
634 l_unlock(&ns->ns_lock);
637 ldlm_lock2handle(lock, lockh);
638 wait_event(lock->l_waitq,
639 lock->l_req_mode == lock->l_granted_mode);
642 LDLM_DEBUG(lock, "matched");
644 LDLM_DEBUG_NOLOCK("not matched");
648 /* Returns a referenced, lock */
649 struct ldlm_lock *ldlm_lock_create(struct ldlm_namespace *ns,
650 struct lustre_handle *parent_lock_handle,
651 __u64 *res_id, __u32 type,
656 struct ldlm_resource *res, *parent_res = NULL;
657 struct ldlm_lock *lock, *parent_lock;
659 parent_lock = ldlm_handle2lock(parent_lock_handle);
661 parent_res = parent_lock->l_resource;
663 res = ldlm_resource_get(ns, parent_res, res_id, type, 1);
667 lock = ldlm_lock_new(parent_lock, res);
669 ldlm_resource_put(res);
673 lock->l_req_mode = mode;
675 lock->l_data_len = data_len;
680 /* Must be called with lock->l_lock and lock->l_resource->lr_lock not held */
681 ldlm_error_t ldlm_lock_enqueue(struct ldlm_lock *lock,
682 void *cookie, int cookie_len,
684 ldlm_lock_callback completion,
685 ldlm_lock_callback blocking)
687 struct ldlm_resource *res;
689 ldlm_res_policy policy;
692 res = lock->l_resource;
693 lock->l_blocking_ast = blocking;
695 if (res->lr_type == LDLM_EXTENT)
696 memcpy(&lock->l_extent, cookie, sizeof(lock->l_extent));
698 /* policies are not executed on the client */
699 local = res->lr_namespace->ns_client;
700 if (!local && (policy = ldlm_res_policy_table[res->lr_type])) {
702 rc = policy(lock, cookie, lock->l_req_mode, NULL);
704 if (rc == ELDLM_LOCK_CHANGED) {
705 res = lock->l_resource;
706 *flags |= LDLM_FL_LOCK_CHANGED;
707 } else if (rc == ELDLM_LOCK_ABORTED) {
708 ldlm_lock_destroy(lock);
713 lock->l_cookie = cookie;
714 lock->l_cookie_len = cookie_len;
716 if (local && lock->l_req_mode == lock->l_granted_mode) {
717 /* The server returned a blocked lock, but it was granted before
718 * we got a chance to actually enqueue it. We don't need to do
723 /* If this is a local resource, put it on the appropriate list. */
724 /* FIXME: don't like this: can we call ldlm_resource_unlink_lock? */
725 list_del_init(&lock->l_res_link);
727 if (*flags & LDLM_FL_BLOCK_CONV)
728 ldlm_resource_add_lock(res, res->lr_converting.prev,
730 else if (*flags & (LDLM_FL_BLOCK_WAIT | LDLM_FL_BLOCK_GRANTED))
731 ldlm_resource_add_lock(res, res->lr_waiting.prev, lock);
733 ldlm_grant_lock(lock);
737 /* FIXME: We may want to optimize by checking lr_most_restr */
738 if (!list_empty(&res->lr_converting)) {
739 ldlm_resource_add_lock(res, res->lr_waiting.prev, lock);
740 *flags |= LDLM_FL_BLOCK_CONV;
743 if (!list_empty(&res->lr_waiting)) {
744 ldlm_resource_add_lock(res, res->lr_waiting.prev, lock);
745 *flags |= LDLM_FL_BLOCK_WAIT;
748 if (!ldlm_lock_compat(lock,0)) {
749 ldlm_resource_add_lock(res, res->lr_waiting.prev, lock);
750 *flags |= LDLM_FL_BLOCK_GRANTED;
754 ldlm_grant_lock(lock);
757 /* Don't set 'completion_ast' until here so that if the lock is granted
758 * immediately we don't do an unnecessary completion call. */
759 lock->l_completion_ast = completion;
763 /* Must be called with namespace taken: queue is waiting or converting. */
764 static int ldlm_reprocess_queue(struct ldlm_resource *res,
765 struct list_head *queue)
767 struct list_head *tmp, *pos;
770 list_for_each_safe(tmp, pos, queue) {
771 struct ldlm_lock *pending;
772 pending = list_entry(tmp, struct ldlm_lock, l_res_link);
774 CDEBUG(D_INFO, "Reprocessing lock %p\n", pending);
776 if (!ldlm_lock_compat(pending, 1))
779 list_del_init(&pending->l_res_link);
780 ldlm_grant_lock(pending);
786 void ldlm_run_ast_work(struct list_head *rpc_list)
788 struct list_head *tmp, *pos;
792 list_for_each_safe(tmp, pos, rpc_list) {
793 struct ldlm_ast_work *w =
794 list_entry(tmp, struct ldlm_ast_work, w_list);
795 struct lustre_handle lockh;
797 ldlm_lock2handle(w->w_lock, &lockh);
799 rc = w->w_lock->l_blocking_ast
800 (&lockh, &w->w_desc, w->w_data, w->w_datalen);
802 rc = w->w_lock->l_completion_ast
803 (&lockh, NULL, w->w_data, w->w_datalen);
805 CERROR("Failed AST - should clean & disconnect "
807 LDLM_LOCK_PUT(w->w_lock);
808 list_del(&w->w_list);
809 OBD_FREE(w, sizeof(*w));
814 /* Must be called with resource->lr_lock not taken. */
815 void ldlm_reprocess_all(struct ldlm_resource *res)
817 struct list_head rpc_list = LIST_HEAD_INIT(rpc_list);
820 /* Local lock trees don't get reprocessed. */
821 if (res->lr_namespace->ns_client) {
826 l_lock(&res->lr_namespace->ns_lock);
827 res->lr_tmp = &rpc_list;
829 ldlm_reprocess_queue(res, &res->lr_converting);
830 if (list_empty(&res->lr_converting))
831 ldlm_reprocess_queue(res, &res->lr_waiting);
834 l_unlock(&res->lr_namespace->ns_lock);
836 ldlm_run_ast_work(&rpc_list);
840 void ldlm_lock_cancel(struct ldlm_lock *lock)
842 struct ldlm_resource *res;
843 struct ldlm_namespace *ns;
846 res = lock->l_resource;
847 ns = res->lr_namespace;
849 l_lock(&ns->ns_lock);
850 if (lock->l_readers || lock->l_writers)
851 CDEBUG(D_INFO, "lock still has references (%d readers, %d "
852 "writers)\n", lock->l_readers, lock->l_writers);
854 ldlm_resource_unlink_lock(lock);
855 ldlm_lock_destroy(lock);
856 l_unlock(&ns->ns_lock);
860 struct ldlm_resource *ldlm_lock_convert(struct ldlm_lock *lock, int new_mode,
863 struct list_head rpc_list = LIST_HEAD_INIT(rpc_list);
864 struct ldlm_resource *res;
865 struct ldlm_namespace *ns;
869 res = lock->l_resource;
870 ns = res->lr_namespace;
872 l_lock(&ns->ns_lock);
874 lock->l_req_mode = new_mode;
875 ldlm_resource_unlink_lock(lock);
877 /* If this is a local resource, put it on the appropriate list. */
878 if (res->lr_namespace->ns_client) {
879 if (*flags & (LDLM_FL_BLOCK_CONV | LDLM_FL_BLOCK_GRANTED))
880 ldlm_resource_add_lock(res, res->lr_converting.prev,
883 res->lr_tmp = &rpc_list;
884 ldlm_grant_lock(lock);
887 /* FIXME: completion handling not with ns_lock held ! */
888 wake_up(&lock->l_waitq);
891 list_add(&lock->l_res_link, res->lr_converting.prev);
893 l_unlock(&ns->ns_lock);
896 ldlm_run_ast_work(&rpc_list);
900 void ldlm_lock_dump(struct ldlm_lock *lock)
904 if (!(portal_debug & D_OTHER))
907 if (RES_VERSION_SIZE != 4)
911 CDEBUG(D_OTHER, " NULL LDLM lock\n");
915 snprintf(ver, sizeof(ver), "%x %x %x %x",
916 lock->l_version[0], lock->l_version[1],
917 lock->l_version[2], lock->l_version[3]);
919 CDEBUG(D_OTHER, " -- Lock dump: %p (%s)\n", lock, ver);
920 CDEBUG(D_OTHER, " Parent: %p\n", lock->l_parent);
921 CDEBUG(D_OTHER, " Resource: %p (%Ld)\n", lock->l_resource,
922 lock->l_resource->lr_name[0]);
923 CDEBUG(D_OTHER, " Requested mode: %d, granted mode: %d\n",
924 (int)lock->l_req_mode, (int)lock->l_granted_mode);
925 CDEBUG(D_OTHER, " Readers: %u ; Writers; %u\n",
926 lock->l_readers, lock->l_writers);
927 if (lock->l_resource->lr_type == LDLM_EXTENT)
928 CDEBUG(D_OTHER, " Extent: %Lu -> %Lu\n",
929 (unsigned long long)lock->l_extent.start,
930 (unsigned long long)lock->l_extent.end);