1 /* -*- mode: c; c-basic-offset: 8; indent-tabs-mode: nil; -*-
2 * vim:expandtab:shiftwidth=8:tabstop=8:
4 * Copyright (C) 2002, 2003 Cluster File Systems, Inc.
5 * Author: Peter Braam <braam@clusterfs.com>
6 * Author: Phil Schwan <phil@clusterfs.com>
8 * This file is part of Lustre, http://www.lustre.org.
10 * Lustre is free software; you can redistribute it and/or
11 * modify it under the terms of version 2 of the GNU General Public
12 * License as published by the Free Software Foundation.
14 * Lustre is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with Lustre; if not, write to the Free Software
21 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
25 # define EXPORT_SYMTAB
27 #define DEBUG_SUBSYSTEM S_LDLM
30 # include <linux/module.h>
31 # include <linux/slab.h>
32 # include <linux/init.h>
33 # include <linux/wait.h>
35 # include <liblustre.h>
38 #include <linux/lustre_dlm.h>
39 #include <linux/obd_class.h>
40 #include <portals/list.h>
41 #include "ldlm_internal.h"
43 extern kmem_cache_t *ldlm_resource_slab;
44 extern kmem_cache_t *ldlm_lock_slab;
45 extern struct lustre_lock ldlm_handle_lock;
46 extern struct list_head ldlm_namespace_list;
47 extern int (*mds_reint_p)(int offset, struct ptlrpc_request *req);
48 extern int (*mds_getattr_name_p)(int offset, struct ptlrpc_request *req);
50 static DECLARE_MUTEX(ldlm_ref_sem);
51 static int ldlm_refcount = 0;
55 static struct ldlm_state *ldlm_state;
57 inline unsigned long round_timeout(unsigned long timeout)
59 return ((timeout / HZ) + 1) * HZ;
63 /* XXX should this be per-ldlm? */
64 static struct list_head waiting_locks_list;
65 static spinlock_t waiting_locks_spinlock;
66 static struct timer_list waiting_locks_timer;
68 static struct expired_lock_thread {
69 wait_queue_head_t elt_waitq;
71 struct list_head elt_expired_locks;
73 } expired_lock_thread;
78 #define ELT_TERMINATE 2
82 struct list_head blp_list;
83 wait_queue_head_t blp_waitq;
84 atomic_t blp_num_threads;
85 struct completion blp_comp;
88 struct ldlm_bl_work_item {
89 struct list_head blwi_entry;
90 struct ldlm_namespace *blwi_ns;
91 struct ldlm_lock_desc blwi_ld;
92 struct ldlm_lock *blwi_lock;
97 static inline int have_expired_locks(void)
101 spin_lock_bh(&expired_lock_thread.elt_lock);
102 need_to_run = !list_empty(&expired_lock_thread.elt_expired_locks);
103 spin_unlock_bh(&expired_lock_thread.elt_lock);
108 static int expired_lock_main(void *arg)
110 struct list_head *expired = &expired_lock_thread.elt_expired_locks;
111 struct l_wait_info lwi = { 0 };
116 kportal_daemonize("ldlm_elt");
118 SIGNAL_MASK_LOCK(current, flags);
119 sigfillset(¤t->blocked);
121 SIGNAL_MASK_UNLOCK(current, flags);
125 expired_lock_thread.elt_state = ELT_READY;
126 wake_up(&expired_lock_thread.elt_waitq);
129 struct list_head *tmp, *n, work_list;
130 l_wait_event(expired_lock_thread.elt_waitq,
131 have_expired_locks() ||
132 expired_lock_thread.elt_state == ELT_TERMINATE,
135 spin_lock_bh(&expired_lock_thread.elt_lock);
136 while (!list_empty(expired)) {
137 struct ldlm_lock *lock;
139 list_add(&work_list, expired);
140 list_del_init(expired);
142 list_for_each_entry(lock, &work_list, l_pending_chain) {
143 LDLM_DEBUG(lock, "moving to work list");
146 spin_unlock_bh(&expired_lock_thread.elt_lock);
149 list_for_each_safe(tmp, n, &work_list) {
150 lock = list_entry(tmp, struct ldlm_lock,
152 ptlrpc_fail_export(lock->l_export);
156 if (!list_empty(&work_list)) {
157 list_for_each_entry(lock, &work_list, l_pending_chain) {
158 LDLM_ERROR(lock, "still on work list!");
161 LASSERTF (list_empty(&work_list),
162 "some exports not failed properly\n");
164 spin_lock_bh(&expired_lock_thread.elt_lock);
166 spin_unlock_bh(&expired_lock_thread.elt_lock);
168 if (expired_lock_thread.elt_state == ELT_TERMINATE)
172 expired_lock_thread.elt_state = ELT_STOPPED;
173 wake_up(&expired_lock_thread.elt_waitq);
177 static void waiting_locks_callback(unsigned long unused)
179 struct ldlm_lock *lock;
180 char str[PTL_NALFMT_SIZE];
182 spin_lock_bh(&waiting_locks_spinlock);
183 while (!list_empty(&waiting_locks_list)) {
184 lock = list_entry(waiting_locks_list.next, struct ldlm_lock,
187 if ((lock->l_callback_timeout > jiffies) ||
188 (lock->l_req_mode == LCK_CW))
191 LDLM_ERROR(lock, "lock callback timer expired: evicting client "
192 "%s@%s nid "LPX64" (%s) ",
193 lock->l_export->exp_client_uuid.uuid,
194 lock->l_export->exp_connection->c_remote_uuid.uuid,
195 lock->l_export->exp_connection->c_peer.peer_nid,
196 portals_nid2str(lock->l_export->exp_connection->c_peer.peer_ni->pni_number,
197 lock->l_export->exp_connection->c_peer.peer_nid,
200 spin_lock_bh(&expired_lock_thread.elt_lock);
201 list_del(&lock->l_pending_chain);
202 list_add(&lock->l_pending_chain,
203 &expired_lock_thread.elt_expired_locks);
204 spin_unlock_bh(&expired_lock_thread.elt_lock);
205 wake_up(&expired_lock_thread.elt_waitq);
209 * Make sure the timer will fire again if we have any locks
212 if (!list_empty(&waiting_locks_list)) {
213 unsigned long timeout_rounded;
214 lock = list_entry(waiting_locks_list.next, struct ldlm_lock,
216 timeout_rounded = round_timeout(lock->l_callback_timeout);
217 mod_timer(&waiting_locks_timer, timeout_rounded);
219 spin_unlock_bh(&waiting_locks_spinlock);
223 * Indicate that we're waiting for a client to call us back cancelling a given
224 * lock. We add it to the pending-callback chain, and schedule the lock-timeout
225 * timer to fire appropriately. (We round up to the next second, to avoid
226 * floods of timer firings during periods of high lock contention and traffic).
228 static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
230 unsigned long timeout_rounded;
232 spin_lock_bh(&waiting_locks_spinlock);
233 if (!list_empty(&lock->l_pending_chain)) {
234 LDLM_DEBUG(lock, "not re-adding to wait list");
235 spin_unlock_bh(&waiting_locks_spinlock);
238 LDLM_DEBUG(lock, "adding to wait list");
240 lock->l_callback_timeout = jiffies + (obd_timeout * HZ / 2);
242 timeout_rounded = round_timeout(lock->l_callback_timeout);
244 if (timeout_rounded < waiting_locks_timer.expires ||
245 !timer_pending(&waiting_locks_timer)) {
246 mod_timer(&waiting_locks_timer, timeout_rounded);
248 list_add_tail(&lock->l_pending_chain, &waiting_locks_list); /* FIFO */
249 spin_unlock_bh(&waiting_locks_spinlock);
254 * Remove a lock from the pending list, likely because it had its cancellation
255 * callback arrive without incident. This adjusts the lock-timeout timer if
256 * needed. Returns 0 if the lock wasn't pending after all, 1 if it was.
258 int ldlm_del_waiting_lock(struct ldlm_lock *lock)
260 struct list_head *list_next;
262 if (lock->l_export == NULL) {
263 /* We don't have a "waiting locks list" on clients. */
264 LDLM_DEBUG(lock, "client lock: no-op");
268 spin_lock_bh(&waiting_locks_spinlock);
270 if (list_empty(&lock->l_pending_chain)) {
271 spin_unlock_bh(&waiting_locks_spinlock);
272 LDLM_DEBUG(lock, "wasn't waiting");
276 list_next = lock->l_pending_chain.next;
277 if (lock->l_pending_chain.prev == &waiting_locks_list) {
278 /* Removing the head of the list, adjust timer. */
279 if (list_next == &waiting_locks_list) {
280 /* No more, just cancel. */
281 del_timer(&waiting_locks_timer);
283 struct ldlm_lock *next;
284 next = list_entry(list_next, struct ldlm_lock,
286 mod_timer(&waiting_locks_timer,
287 round_timeout(next->l_callback_timeout));
291 spin_lock_bh(&expired_lock_thread.elt_lock);
292 list_del_init(&lock->l_pending_chain);
293 spin_unlock_bh(&expired_lock_thread.elt_lock);
295 spin_unlock_bh(&waiting_locks_spinlock);
296 LDLM_DEBUG(lock, "removed");
300 #else /* !__KERNEL__ */
302 static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
307 int ldlm_del_waiting_lock(struct ldlm_lock *lock)
312 #endif /* __KERNEL__ */
314 static void ldlm_failed_ast(struct ldlm_lock *lock, int rc, char *ast_type)
316 const struct ptlrpc_connection *conn = lock->l_export->exp_connection;
317 char str[PTL_NALFMT_SIZE];
319 CERROR("%s AST failed (%d) for res "LPU64"/"LPU64
320 ", mode %s: evicting client %s@%s NID "LPX64" (%s)\n",
322 lock->l_resource->lr_name.name[0],
323 lock->l_resource->lr_name.name[1],
324 ldlm_lockname[lock->l_granted_mode],
325 lock->l_export->exp_client_uuid.uuid,
326 conn->c_remote_uuid.uuid, conn->c_peer.peer_nid,
327 portals_nid2str(conn->c_peer.peer_ni->pni_number,
328 conn->c_peer.peer_nid, str));
329 ptlrpc_fail_export(lock->l_export);
332 int ldlm_server_blocking_ast(struct ldlm_lock *lock,
333 struct ldlm_lock_desc *desc,
334 void *data, int flag)
336 struct ldlm_request *body;
337 struct ptlrpc_request *req;
338 int rc = 0, size = sizeof(*body);
341 if (flag == LDLM_CB_CANCELING) {
342 /* Don't need to do anything here. */
348 l_lock(&lock->l_resource->lr_namespace->ns_lock);
349 if (lock->l_granted_mode != lock->l_req_mode) {
350 /* this blocking AST will be communicated as part of the
351 * completion AST instead */
352 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
353 LDLM_DEBUG(lock, "lock not granted, not sending blocking AST"); RETURN(0);
356 if (lock->l_destroyed) {
357 /* What's the point? */
358 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
363 if (LTIME_S(CURRENT_TIME) - lock->l_export->exp_last_request_time > 30){
364 ldlm_failed_ast(lock, -ETIMEDOUT, "Not-attempted blocking");
365 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
370 req = ptlrpc_prep_req(lock->l_export->exp_imp_reverse,
371 LDLM_BL_CALLBACK, 1, &size, NULL);
373 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
377 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
378 memcpy(&body->lock_handle1, &lock->l_remote_handle,
379 sizeof(body->lock_handle1));
380 memcpy(&body->lock_desc, desc, sizeof(*desc));
381 body->lock_flags |= (lock->l_flags & LDLM_AST_FLAGS);
383 LDLM_DEBUG(lock, "server preparing blocking AST");
384 req->rq_replen = lustre_msg_size(0, NULL);
386 if (lock->l_granted_mode == lock->l_req_mode)
387 ldlm_add_waiting_lock(lock);
388 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
390 req->rq_send_state = LUSTRE_IMP_FULL;
391 req->rq_timeout = 2; /* 2 second timeout for initial AST reply */
392 rc = ptlrpc_queue_wait(req);
393 if (rc == -ETIMEDOUT || rc == -EINTR || rc == -ENOTCONN) {
394 LASSERT(lock->l_export);
395 if (lock->l_export->exp_libclient) {
396 CDEBUG(D_HA, "BLOCKING AST to liblustre client (nid "
397 LPU64") timeout, simply cancel lock 0x%p\n",
398 req->rq_peer.peer_nid, lock);
399 ldlm_lock_cancel(lock);
402 ldlm_del_waiting_lock(lock);
403 ldlm_failed_ast(lock, rc, "blocking");
407 CDEBUG(D_DLMTRACE, "client (nid "LPU64") returned %d "
408 "from blocking AST for lock %p--normal race\n",
409 req->rq_peer.peer_nid,
410 req->rq_repmsg->status, lock);
411 else if (rc == -ENOTCONN)
412 CDEBUG(D_DLMTRACE, "client (nid "LPU64") returned %d "
413 "from blocking AST for lock %p--this client was "
414 "probably rebooted while it held a lock, nothing"
415 " serious\n",req->rq_peer.peer_nid,
416 req->rq_repmsg->status, lock);
418 CDEBUG(D_ERROR, "client (nid "LPU64") returned %d "
419 "from blocking AST for lock %p\n",
420 req->rq_peer.peer_nid,
421 (req->rq_repmsg != NULL)?
422 req->rq_repmsg->status : 0,
424 LDLM_DEBUG(lock, "client sent rc %d rq_status %d from blocking "
425 "AST", rc, req->rq_status);
426 ldlm_lock_cancel(lock);
427 /* Server-side AST functions are called from ldlm_reprocess_all,
428 * which needs to be told to please restart its reprocessing. */
432 ptlrpc_req_finished(req);
437 /* XXX copied from ptlrpc/service.c */
438 static long timeval_sub(struct timeval *large, struct timeval *small)
440 return (large->tv_sec - small->tv_sec) * 1000000 +
441 (large->tv_usec - small->tv_usec);
444 int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags, void *data)
446 struct ldlm_request *body;
447 struct ptlrpc_request *req;
448 struct timeval granted_time;
449 long total_enqueue_wait;
450 int rc = 0, size[2] = {sizeof(*body)}, buffers = 1;
453 LASSERT(lock != NULL);
455 do_gettimeofday(&granted_time);
456 total_enqueue_wait = timeval_sub(&granted_time, &lock->l_enqueued_time);
458 if (total_enqueue_wait / 1000000 > obd_timeout)
459 LDLM_ERROR(lock, "enqueue wait took %ldus", total_enqueue_wait);
461 if (lock->l_resource->lr_lvb_len) {
463 size[1] = lock->l_resource->lr_lvb_len;
466 req = ptlrpc_prep_req(lock->l_export->exp_imp_reverse,
467 LDLM_CP_CALLBACK, buffers, size, NULL);
471 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof (*body));
472 memcpy(&body->lock_handle1, &lock->l_remote_handle,
473 sizeof(body->lock_handle1));
474 body->lock_flags = flags;
475 ldlm_lock2desc(lock, &body->lock_desc);
478 void *lvb = lustre_msg_buf(req->rq_reqmsg, 1,
479 lock->l_resource->lr_lvb_len);
480 memcpy(lvb, lock->l_resource->lr_lvb_data,
481 lock->l_resource->lr_lvb_len);
484 LDLM_DEBUG(lock, "server preparing completion AST (after %ldus wait)",
486 req->rq_replen = lustre_msg_size(0, NULL);
488 req->rq_send_state = LUSTRE_IMP_FULL;
489 req->rq_timeout = 2; /* 2 second timeout for initial AST reply */
491 /* We only send real blocking ASTs after the lock is granted */
492 l_lock(&lock->l_resource->lr_namespace->ns_lock);
493 if (lock->l_flags & LDLM_FL_AST_SENT) {
494 body->lock_flags |= LDLM_FL_AST_SENT;
495 ldlm_add_waiting_lock(lock); /* start the lock-timeout clock */
497 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
499 rc = ptlrpc_queue_wait(req);
500 if ((rc == -ETIMEDOUT || rc == -EINTR || rc == -ENOTCONN) &&
501 !lock->l_export->exp_libclient) {
502 ldlm_del_waiting_lock(lock);
503 ldlm_failed_ast(lock, rc, "completion");
504 } else if (rc == -EINVAL) {
505 LDLM_DEBUG(lock, "lost the race -- client no longer has this "
508 LDLM_ERROR(lock, "client sent rc %d rq_status %d from "
509 "completion AST", rc, req->rq_status);
510 ldlm_lock_cancel(lock);
511 /* Server-side AST functions are called from ldlm_reprocess_all,
512 * which needs to be told to please restart its reprocessing. */
515 ptlrpc_req_finished(req);
520 int ldlm_server_glimpse_ast(struct ldlm_lock *lock, void *data)
522 struct ldlm_resource *res = lock->l_resource;
523 struct ldlm_request *body;
524 struct ptlrpc_request *req;
525 int rc = 0, size = sizeof(*body);
528 LASSERT(lock != NULL);
530 req = ptlrpc_prep_req(lock->l_export->exp_imp_reverse,
531 LDLM_GL_CALLBACK, 1, &size, NULL);
535 body = lustre_msg_buf(req->rq_reqmsg, 0, sizeof(*body));
536 memcpy(&body->lock_handle1, &lock->l_remote_handle,
537 sizeof(body->lock_handle1));
538 ldlm_lock2desc(lock, &body->lock_desc);
540 size = lock->l_resource->lr_lvb_len;
541 req->rq_replen = lustre_msg_size(1, &size);
543 req->rq_send_state = LUSTRE_IMP_FULL;
544 req->rq_timeout = 2; /* 2 second timeout for initial AST reply */
546 rc = ptlrpc_queue_wait(req);
547 if ((rc == -ETIMEDOUT || rc == -EINTR || rc == -ENOTCONN) &&
548 !lock->l_export->exp_libclient) {
549 ldlm_del_waiting_lock(lock);
550 ldlm_failed_ast(lock, rc, "glimpse");
551 } else if (rc == -EINVAL) {
552 LDLM_DEBUG(lock, "lost the race -- client no longer has this "
554 } else if (rc == -ELDLM_NO_LOCK_DATA) {
555 LDLM_DEBUG(lock, "lost a race -- client has a lock, but no "
558 LDLM_ERROR(lock, "client sent rc %d rq_status %d from "
559 "glimpse AST", rc, req->rq_status);
561 rc = res->lr_namespace->ns_lvbo->lvbo_update
562 (res, req->rq_repmsg, 0, 1);
564 ptlrpc_req_finished(req);
568 int ldlm_handle_enqueue(struct ptlrpc_request *req,
569 ldlm_completion_callback completion_callback,
570 ldlm_blocking_callback blocking_callback,
571 ldlm_glimpse_callback glimpse_callback)
573 struct obd_device *obddev = req->rq_export->exp_obd;
574 struct ldlm_reply *dlm_rep;
575 struct ldlm_request *dlm_req;
576 int rc = 0, size[2] = {sizeof(*dlm_rep)};
578 ldlm_error_t err = ELDLM_OK;
579 struct ldlm_lock *lock = NULL;
583 LDLM_DEBUG_NOLOCK("server-side enqueue handler START");
585 dlm_req = lustre_swab_reqbuf (req, 0, sizeof (*dlm_req),
586 lustre_swab_ldlm_request);
587 if (dlm_req == NULL) {
588 CERROR ("Can't unpack dlm_req\n");
589 GOTO(out, rc = -EFAULT);
592 flags = dlm_req->lock_flags;
594 /* The lock's callback data might be set in the policy function */
595 lock = ldlm_lock_create(obddev->obd_namespace, &dlm_req->lock_handle2,
596 dlm_req->lock_desc.l_resource.lr_name,
597 dlm_req->lock_desc.l_resource.lr_type,
598 dlm_req->lock_desc.l_req_mode,
599 blocking_callback, completion_callback,
600 glimpse_callback, NULL, 0);
602 GOTO(out, rc = -ENOMEM);
604 do_gettimeofday(&lock->l_enqueued_time);
605 memcpy(&lock->l_remote_handle, &dlm_req->lock_handle1,
606 sizeof(lock->l_remote_handle));
607 LDLM_DEBUG(lock, "server-side enqueue handler, new lock created");
609 LASSERT(req->rq_export);
610 lock->l_export = class_export_get(req->rq_export);
611 l_lock(&lock->l_resource->lr_namespace->ns_lock);
612 list_add(&lock->l_export_chain,
613 &lock->l_export->exp_ldlm_data.led_held_locks);
614 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
616 if (flags & LDLM_FL_HAS_INTENT) {
617 /* In this case, the reply buffer is allocated deep in
618 * local_lock_enqueue by the policy function. */
622 if (lock->l_resource->lr_lvb_len) {
623 size[1] = lock->l_resource->lr_lvb_len;
627 rc = lustre_pack_reply(req, buffers, size, NULL);
632 if (dlm_req->lock_desc.l_resource.lr_type != LDLM_PLAIN)
633 memcpy(&lock->l_policy_data, &dlm_req->lock_desc.l_policy_data,
634 sizeof(ldlm_policy_data_t));
635 if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT)
636 memcpy(&lock->l_req_extent, &lock->l_policy_data.l_extent,
637 sizeof(lock->l_req_extent));
639 err = ldlm_lock_enqueue(obddev->obd_namespace, &lock, cookie, &flags);
643 dlm_rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*dlm_rep));
644 dlm_rep->lock_flags = flags;
646 ldlm_lock2desc(lock, &dlm_rep->lock_desc);
647 ldlm_lock2handle(lock, &dlm_rep->lock_handle);
649 /* We never send a blocking AST until the lock is granted, but
650 * we can tell it right now */
651 l_lock(&lock->l_resource->lr_namespace->ns_lock);
652 if (lock->l_flags & LDLM_FL_AST_SENT) {
653 dlm_rep->lock_flags |= LDLM_FL_AST_SENT;
654 if (lock->l_granted_mode == lock->l_req_mode)
655 ldlm_add_waiting_lock(lock);
657 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
661 req->rq_status = err;
662 if (req->rq_reply_state == NULL) {
663 err = lustre_pack_reply(req, 0, NULL, NULL);
668 /* The LOCK_CHANGED code in ldlm_lock_enqueue depends on this
669 * ldlm_reprocess_all. If this moves, revisit that code. -phil */
671 LDLM_DEBUG(lock, "server-side enqueue handler, sending reply"
672 "(err=%d, rc=%d)", err, rc);
674 if (lock->l_resource->lr_lvb_len > 0) {
675 void *lvb = lustre_msg_buf(req->rq_repmsg, 1,
676 lock->l_resource->lr_lvb_len);
677 memcpy(lvb, lock->l_resource->lr_lvb_data,
678 lock->l_resource->lr_lvb_len);
681 if (!err && dlm_req->lock_desc.l_resource.lr_type != LDLM_FLOCK)
682 ldlm_reprocess_all(lock->l_resource);
685 LDLM_DEBUG_NOLOCK("server-side enqueue handler END (lock %p, rc %d)",
691 int ldlm_handle_convert(struct ptlrpc_request *req)
693 struct ldlm_request *dlm_req;
694 struct ldlm_reply *dlm_rep;
695 struct ldlm_lock *lock;
696 int rc, size = sizeof(*dlm_rep);
699 dlm_req = lustre_swab_reqbuf (req, 0, sizeof (*dlm_req),
700 lustre_swab_ldlm_request);
701 if (dlm_req == NULL) {
702 CERROR ("Can't unpack dlm_req\n");
706 rc = lustre_pack_reply(req, 1, &size, NULL);
708 CERROR("out of memory\n");
711 dlm_rep = lustre_msg_buf(req->rq_repmsg, 0, sizeof (*dlm_rep));
712 dlm_rep->lock_flags = dlm_req->lock_flags;
714 lock = ldlm_handle2lock(&dlm_req->lock_handle1);
716 req->rq_status = EINVAL;
718 LDLM_DEBUG(lock, "server-side convert handler START");
719 ldlm_lock_convert(lock, dlm_req->lock_desc.l_req_mode,
720 &dlm_rep->lock_flags);
721 if (ldlm_del_waiting_lock(lock))
722 CDEBUG(D_DLMTRACE, "converted waiting lock %p\n", lock);
727 ldlm_reprocess_all(lock->l_resource);
728 LDLM_DEBUG(lock, "server-side convert handler END");
731 LDLM_DEBUG_NOLOCK("server-side convert handler END");
736 int ldlm_handle_cancel(struct ptlrpc_request *req)
738 struct ldlm_request *dlm_req;
739 struct ldlm_lock *lock;
740 struct ldlm_resource *res;
741 char str[PTL_NALFMT_SIZE];
745 dlm_req = lustre_swab_reqbuf(req, 0, sizeof (*dlm_req),
746 lustre_swab_ldlm_request);
747 if (dlm_req == NULL) {
748 CERROR("bad request buffer for cancel\n");
752 rc = lustre_pack_reply(req, 0, NULL, NULL);
754 CERROR("out of memory\n");
758 lock = ldlm_handle2lock(&dlm_req->lock_handle1);
760 CERROR("received cancel for unknown lock cookie "LPX64
761 " from client %s nid "LPX64" (%s)\n",
762 dlm_req->lock_handle1.cookie,
763 req->rq_export->exp_client_uuid.uuid,
764 req->rq_peer.peer_nid,
765 portals_nid2str(req->rq_peer.peer_ni->pni_number,
766 req->rq_peer.peer_nid, str));
767 LDLM_DEBUG_NOLOCK("server-side cancel handler stale lock "
769 dlm_req->lock_handle1.cookie);
770 req->rq_status = ESTALE;
772 LDLM_DEBUG(lock, "server-side cancel handler START");
773 res = lock->l_resource;
774 if (res && res->lr_namespace->ns_lvbo &&
775 res->lr_namespace->ns_lvbo->lvbo_update) {
776 (void)res->lr_namespace->ns_lvbo->lvbo_update
778 //(res, req->rq_reqmsg, 1);
781 ldlm_lock_cancel(lock);
782 if (ldlm_del_waiting_lock(lock))
783 CDEBUG(D_DLMTRACE, "cancelled waiting lock %p\n", lock);
787 if (ptlrpc_reply(req) != 0)
791 ldlm_reprocess_all(lock->l_resource);
792 LDLM_DEBUG(lock, "server-side cancel handler END");
799 static void ldlm_handle_bl_callback(struct ldlm_namespace *ns,
800 struct ldlm_lock_desc *ld,
801 struct ldlm_lock *lock)
806 l_lock(&ns->ns_lock);
807 LDLM_DEBUG(lock, "client blocking AST callback handler START");
809 lock->l_flags |= LDLM_FL_CBPENDING;
810 do_ast = (!lock->l_readers && !lock->l_writers);
813 LDLM_DEBUG(lock, "already unused, calling "
814 "callback (%p)", lock->l_blocking_ast);
815 if (lock->l_blocking_ast != NULL) {
816 l_unlock(&ns->ns_lock);
817 l_check_no_ns_lock(ns);
818 lock->l_blocking_ast(lock, ld, lock->l_ast_data,
820 l_lock(&ns->ns_lock);
823 LDLM_DEBUG(lock, "Lock still has references, will be"
827 LDLM_DEBUG(lock, "client blocking callback handler END");
828 l_unlock(&ns->ns_lock);
833 static void ldlm_handle_cp_callback(struct ptlrpc_request *req,
834 struct ldlm_namespace *ns,
835 struct ldlm_request *dlm_req,
836 struct ldlm_lock *lock)
841 l_lock(&ns->ns_lock);
842 LDLM_DEBUG(lock, "client completion callback handler START");
844 /* If we receive the completion AST before the actual enqueue returned,
845 * then we might need to switch lock modes, resources, or extents. */
846 if (dlm_req->lock_desc.l_granted_mode != lock->l_req_mode) {
847 lock->l_req_mode = dlm_req->lock_desc.l_granted_mode;
848 LDLM_DEBUG(lock, "completion AST, new lock mode");
851 if (lock->l_resource->lr_type != LDLM_PLAIN) {
852 memcpy(&lock->l_policy_data, &dlm_req->lock_desc.l_policy_data,
853 sizeof(lock->l_policy_data));
854 LDLM_DEBUG(lock, "completion AST, new policy data");
857 ldlm_resource_unlink_lock(lock);
858 if (memcmp(&dlm_req->lock_desc.l_resource.lr_name,
859 &lock->l_resource->lr_name,
860 sizeof(lock->l_resource->lr_name)) != 0) {
861 ldlm_lock_change_resource(ns, lock,
862 dlm_req->lock_desc.l_resource.lr_name);
863 LDLM_DEBUG(lock, "completion AST, new resource");
866 if (dlm_req->lock_flags & LDLM_FL_AST_SENT) {
867 lock->l_flags |= LDLM_FL_CBPENDING;
868 LDLM_DEBUG(lock, "completion AST includes blocking AST");
871 if (lock->l_lvb_len) {
873 lvb = lustre_swab_reqbuf(req, 1, lock->l_lvb_len,
874 lock->l_lvb_swabber);
876 LDLM_ERROR(lock, "completion AST did not contain "
879 memcpy(lock->l_lvb_data, lvb, lock->l_lvb_len);
883 lock->l_resource->lr_tmp = &ast_list;
884 ldlm_grant_lock(lock, req, sizeof(*req), 1);
885 lock->l_resource->lr_tmp = NULL;
886 LDLM_DEBUG(lock, "callback handler finished, about to run_ast_work");
887 l_unlock(&ns->ns_lock);
890 ldlm_run_ast_work(ns, &ast_list);
892 LDLM_DEBUG_NOLOCK("client completion callback handler END (lock %p)",
897 static void ldlm_handle_gl_callback(struct ptlrpc_request *req,
898 struct ldlm_namespace *ns,
899 struct ldlm_request *dlm_req,
900 struct ldlm_lock *lock)
905 l_lock(&ns->ns_lock);
906 LDLM_DEBUG(lock, "client glimpse AST callback handler");
908 if (lock->l_glimpse_ast != NULL) {
909 l_unlock(&ns->ns_lock);
910 l_check_no_ns_lock(ns);
911 rc = lock->l_glimpse_ast(lock, req);
912 l_lock(&ns->ns_lock);
915 if (req->rq_repmsg != NULL) {
922 if (lock->l_granted_mode == LCK_PW &&
923 !lock->l_readers && !lock->l_writers &&
924 time_after(jiffies, lock->l_last_used + 10 * HZ)) {
925 l_unlock(&ns->ns_lock);
926 ldlm_handle_bl_callback(ns, NULL, lock);
931 l_unlock(&ns->ns_lock);
936 static int ldlm_callback_reply(struct ptlrpc_request *req, int rc)
939 if (req->rq_reply_state == NULL) {
940 rc = lustre_pack_reply(req, 0, NULL, NULL);
944 return ptlrpc_reply(req);
948 int ldlm_bl_to_thread(struct ldlm_namespace *ns, struct ldlm_lock_desc *ld,
949 struct ldlm_lock *lock)
951 struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
952 struct ldlm_bl_work_item *blwi;
955 OBD_ALLOC(blwi, sizeof(*blwi));
962 blwi->blwi_lock = lock;
964 spin_lock(&blp->blp_lock);
965 list_add_tail(&blwi->blwi_entry, &blp->blp_list);
966 wake_up(&blp->blp_waitq);
967 spin_unlock(&blp->blp_lock);
973 void liblustre_ldlm_handle_bl_callback(struct ldlm_namespace *ns,
974 struct ldlm_lock_desc *ld,
975 struct ldlm_lock *lock)
977 ldlm_handle_bl_callback(ns, ld, lock);
981 static int ldlm_callback_handler(struct ptlrpc_request *req)
983 struct ldlm_namespace *ns;
984 struct ldlm_request *dlm_req;
985 struct ldlm_lock *lock;
986 char str[PTL_NALFMT_SIZE];
990 /* Requests arrive in sender's byte order. The ptlrpc service
991 * handler has already checked and, if necessary, byte-swapped the
992 * incoming request message body, but I am responsible for the
993 * message buffers. */
995 if (req->rq_export == NULL) {
996 struct ldlm_request *dlm_req;
998 CDEBUG(D_RPCTRACE, "operation %d from nid "LPX64" (%s) with bad "
999 "export cookie "LPX64" (ptl req %d/rep %d); this is "
1000 "normal if this node rebooted with a lock held\n",
1001 req->rq_reqmsg->opc, req->rq_peer.peer_nid,
1002 portals_nid2str(req->rq_peer.peer_ni->pni_number,
1003 req->rq_peer.peer_nid, str),
1004 req->rq_reqmsg->handle.cookie,
1005 req->rq_request_portal, req->rq_reply_portal);
1007 dlm_req = lustre_swab_reqbuf(req, 0, sizeof (*dlm_req),
1008 lustre_swab_ldlm_request);
1009 if (dlm_req != NULL)
1010 CDEBUG(D_RPCTRACE, "--> lock cookie: "LPX64"\n",
1011 dlm_req->lock_handle1.cookie);
1013 ldlm_callback_reply(req, -ENOTCONN);
1017 LASSERT(req->rq_export != NULL);
1018 LASSERT(req->rq_export->exp_obd != NULL);
1020 switch(req->rq_reqmsg->opc) {
1021 case LDLM_BL_CALLBACK:
1022 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
1024 case LDLM_CP_CALLBACK:
1025 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CP_CALLBACK, 0);
1027 case LDLM_GL_CALLBACK:
1028 OBD_FAIL_RETURN(OBD_FAIL_LDLM_GL_CALLBACK, 0);
1030 case OBD_LOG_CANCEL:
1031 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOG_CANCEL_NET, 0);
1032 rc = llog_origin_handle_cancel(req);
1033 ldlm_callback_reply(req, rc);
1035 case LLOG_ORIGIN_HANDLE_CREATE:
1036 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1037 rc = llog_origin_handle_create(req);
1038 ldlm_callback_reply(req, rc);
1040 case LLOG_ORIGIN_HANDLE_NEXT_BLOCK:
1041 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1042 rc = llog_origin_handle_next_block(req);
1043 ldlm_callback_reply(req, rc);
1045 case LLOG_ORIGIN_HANDLE_READ_HEADER:
1046 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1047 rc = llog_origin_handle_read_header(req);
1048 ldlm_callback_reply(req, rc);
1050 case LLOG_ORIGIN_HANDLE_CLOSE:
1051 OBD_FAIL_RETURN(OBD_FAIL_OBD_LOGD_NET, 0);
1052 rc = llog_origin_handle_close(req);
1053 ldlm_callback_reply(req, rc);
1056 CERROR("unknown opcode %u\n", req->rq_reqmsg->opc);
1057 ldlm_callback_reply(req, -EPROTO);
1061 ns = req->rq_export->exp_obd->obd_namespace;
1062 LASSERT(ns != NULL);
1064 dlm_req = lustre_swab_reqbuf (req, 0, sizeof (*dlm_req),
1065 lustre_swab_ldlm_request);
1066 if (dlm_req == NULL) {
1067 CERROR ("can't unpack dlm_req\n");
1068 ldlm_callback_reply (req, -EPROTO);
1072 lock = ldlm_handle2lock_ns(ns, &dlm_req->lock_handle1);
1074 CDEBUG(D_INODE, "callback on lock "LPX64" - lock disappeared\n",
1075 dlm_req->lock_handle1.cookie);
1076 ldlm_callback_reply(req, -EINVAL);
1080 /* Copy hints/flags (e.g. LDLM_FL_DISCARD_DATA) from AST. */
1081 lock->l_flags |= (dlm_req->lock_flags & LDLM_AST_FLAGS);
1083 /* We want the ost thread to get this reply so that it can respond
1084 * to ost requests (write cache writeback) that might be triggered
1087 * But we'd also like to be able to indicate in the reply that we're
1088 * cancelling right now, because it's unused, or have an intent result
1089 * in the reply, so we might have to push the responsibility for sending
1090 * the reply down into the AST handlers, alas. */
1092 switch (req->rq_reqmsg->opc) {
1093 case LDLM_BL_CALLBACK:
1094 CDEBUG(D_INODE, "blocking ast\n");
1096 rc = ldlm_bl_to_thread(ns, &dlm_req->lock_desc, lock);
1097 ldlm_callback_reply(req, rc);
1100 ldlm_callback_reply(req, rc);
1101 ldlm_handle_bl_callback(ns, &dlm_req->lock_desc, lock);
1104 case LDLM_CP_CALLBACK:
1105 CDEBUG(D_INODE, "completion ast\n");
1106 ldlm_callback_reply(req, 0);
1107 ldlm_handle_cp_callback(req, ns, dlm_req, lock);
1109 case LDLM_GL_CALLBACK:
1110 CDEBUG(D_INODE, "glimpse ast\n");
1111 ldlm_handle_gl_callback(req, ns, dlm_req, lock);
1114 LBUG(); /* checked above */
1120 static int ldlm_cancel_handler(struct ptlrpc_request *req)
1125 /* Requests arrive in sender's byte order. The ptlrpc service
1126 * handler has already checked and, if necessary, byte-swapped the
1127 * incoming request message body, but I am responsible for the
1128 * message buffers. */
1130 if (req->rq_export == NULL) {
1131 struct ldlm_request *dlm_req;
1132 CERROR("operation %d with bad export (ptl req %d/rep %d)\n",
1133 req->rq_reqmsg->opc, req->rq_request_portal,
1134 req->rq_reply_portal);
1135 CERROR("--> export cookie: "LPX64"\n",
1136 req->rq_reqmsg->handle.cookie);
1137 dlm_req = lustre_swab_reqbuf(req, 0, sizeof (*dlm_req),
1138 lustre_swab_ldlm_request);
1139 if (dlm_req != NULL)
1140 ldlm_lock_dump_handle(D_ERROR, &dlm_req->lock_handle1);
1144 switch (req->rq_reqmsg->opc) {
1146 /* XXX FIXME move this back to mds/handler.c, bug 249 */
1148 CDEBUG(D_INODE, "cancel\n");
1149 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CANCEL, 0);
1150 rc = ldlm_handle_cancel(req);
1156 CERROR("invalid opcode %d\n", req->rq_reqmsg->opc);
1164 static struct ldlm_bl_work_item *ldlm_bl_get_work(struct ldlm_bl_pool *blp)
1166 struct ldlm_bl_work_item *blwi = NULL;
1168 spin_lock(&blp->blp_lock);
1169 if (!list_empty(&blp->blp_list)) {
1170 blwi = list_entry(blp->blp_list.next, struct ldlm_bl_work_item,
1172 list_del(&blwi->blwi_entry);
1174 spin_unlock(&blp->blp_lock);
1179 struct ldlm_bl_thread_data {
1181 struct ldlm_bl_pool *bltd_blp;
1184 static int ldlm_bl_thread_main(void *arg)
1186 struct ldlm_bl_thread_data *bltd = arg;
1187 struct ldlm_bl_pool *blp = bltd->bltd_blp;
1188 unsigned long flags;
1191 /* XXX boiler-plate */
1193 char name[sizeof(current->comm)];
1194 snprintf(name, sizeof(name) - 1, "ldlm_bl_%02d",
1196 kportal_daemonize(name);
1198 SIGNAL_MASK_LOCK(current, flags);
1199 sigfillset(¤t->blocked);
1201 SIGNAL_MASK_UNLOCK(current, flags);
1203 atomic_inc(&blp->blp_num_threads);
1204 complete(&blp->blp_comp);
1207 struct l_wait_info lwi = { 0 };
1208 struct ldlm_bl_work_item *blwi = NULL;
1210 l_wait_event_exclusive(blp->blp_waitq,
1211 (blwi = ldlm_bl_get_work(blp)) != NULL,
1214 if (blwi->blwi_ns == NULL)
1217 ldlm_handle_bl_callback(blwi->blwi_ns, &blwi->blwi_ld,
1219 OBD_FREE(blwi, sizeof(*blwi));
1222 atomic_dec(&blp->blp_num_threads);
1223 complete(&blp->blp_comp);
1229 static int ldlm_setup(void);
1230 static int ldlm_cleanup(int force);
1232 int ldlm_get_ref(void)
1235 down(&ldlm_ref_sem);
1236 if (++ldlm_refcount == 1) {
1246 void ldlm_put_ref(int force)
1248 down(&ldlm_ref_sem);
1249 if (ldlm_refcount == 1) {
1250 int rc = ldlm_cleanup(force);
1252 CERROR("ldlm_cleanup failed: %d\n", rc);
1263 static int ldlm_setup(void)
1265 struct ldlm_bl_pool *blp;
1272 if (ldlm_state != NULL)
1275 OBD_ALLOC(ldlm_state, sizeof(*ldlm_state));
1276 if (ldlm_state == NULL)
1280 rc = ldlm_proc_setup();
1285 ldlm_state->ldlm_cb_service =
1286 ptlrpc_init_svc(LDLM_NBUFS, LDLM_BUFSIZE, LDLM_MAXREQSIZE,
1287 LDLM_CB_REQUEST_PORTAL, LDLM_CB_REPLY_PORTAL,
1288 ldlm_callback_handler, "ldlm_cbd",
1291 if (!ldlm_state->ldlm_cb_service) {
1292 CERROR("failed to start service\n");
1293 GOTO(out_proc, rc = -ENOMEM);
1296 ldlm_state->ldlm_cancel_service =
1297 ptlrpc_init_svc(LDLM_NBUFS, LDLM_BUFSIZE, LDLM_MAXREQSIZE,
1298 LDLM_CANCEL_REQUEST_PORTAL,
1299 LDLM_CANCEL_REPLY_PORTAL,
1300 ldlm_cancel_handler, "ldlm_canceld",
1303 if (!ldlm_state->ldlm_cancel_service) {
1304 CERROR("failed to start service\n");
1305 GOTO(out_proc, rc = -ENOMEM);
1308 OBD_ALLOC(blp, sizeof(*blp));
1310 GOTO(out_proc, rc = -ENOMEM);
1311 ldlm_state->ldlm_bl_pool = blp;
1313 atomic_set(&blp->blp_num_threads, 0);
1314 init_waitqueue_head(&blp->blp_waitq);
1315 spin_lock_init(&blp->blp_lock);
1317 INIT_LIST_HEAD(&blp->blp_list);
1320 for (i = 0; i < LDLM_NUM_THREADS; i++) {
1321 struct ldlm_bl_thread_data bltd = {
1325 init_completion(&blp->blp_comp);
1326 rc = kernel_thread(ldlm_bl_thread_main, &bltd, 0);
1328 CERROR("cannot start LDLM thread #%d: rc %d\n", i, rc);
1330 GOTO(out_thread, rc);
1332 wait_for_completion(&blp->blp_comp);
1335 rc = ptlrpc_start_n_threads(NULL, ldlm_state->ldlm_cancel_service,
1336 LDLM_NUM_THREADS, "ldlm_cn");
1339 GOTO(out_thread, rc);
1342 rc = ptlrpc_start_n_threads(NULL, ldlm_state->ldlm_cb_service,
1343 LDLM_NUM_THREADS, "ldlm_cb");
1346 GOTO(out_thread, rc);
1349 INIT_LIST_HEAD(&expired_lock_thread.elt_expired_locks);
1350 spin_lock_init(&expired_lock_thread.elt_lock);
1351 expired_lock_thread.elt_state = ELT_STOPPED;
1352 init_waitqueue_head(&expired_lock_thread.elt_waitq);
1354 rc = kernel_thread(expired_lock_main, NULL, CLONE_VM | CLONE_FS);
1356 CERROR("Cannot start ldlm expired-lock thread: %d\n", rc);
1357 GOTO(out_thread, rc);
1360 wait_event(expired_lock_thread.elt_waitq,
1361 expired_lock_thread.elt_state == ELT_READY);
1363 INIT_LIST_HEAD(&waiting_locks_list);
1364 spin_lock_init(&waiting_locks_spinlock);
1365 waiting_locks_timer.function = waiting_locks_callback;
1366 waiting_locks_timer.data = 0;
1367 init_timer(&waiting_locks_timer);
1374 ptlrpc_unregister_service(ldlm_state->ldlm_cancel_service);
1375 ptlrpc_unregister_service(ldlm_state->ldlm_cb_service);
1380 ldlm_proc_cleanup();
1383 OBD_FREE(ldlm_state, sizeof(*ldlm_state));
1388 static int ldlm_cleanup(int force)
1391 struct ldlm_bl_pool *blp = ldlm_state->ldlm_bl_pool;
1395 if (!list_empty(&ldlm_namespace_list)) {
1396 CERROR("ldlm still has namespaces; clean these up first.\n");
1397 ldlm_dump_all_namespaces();
1402 while (atomic_read(&blp->blp_num_threads) > 0) {
1403 struct ldlm_bl_work_item blwi = { .blwi_ns = NULL };
1405 init_completion(&blp->blp_comp);
1407 spin_lock(&blp->blp_lock);
1408 list_add_tail(&blwi.blwi_entry, &blp->blp_list);
1409 wake_up(&blp->blp_waitq);
1410 spin_unlock(&blp->blp_lock);
1412 wait_for_completion(&blp->blp_comp);
1414 OBD_FREE(blp, sizeof(*blp));
1416 ptlrpc_stop_all_threads(ldlm_state->ldlm_cb_service);
1417 ptlrpc_unregister_service(ldlm_state->ldlm_cb_service);
1418 ptlrpc_stop_all_threads(ldlm_state->ldlm_cancel_service);
1419 ptlrpc_unregister_service(ldlm_state->ldlm_cancel_service);
1420 ldlm_proc_cleanup();
1422 expired_lock_thread.elt_state = ELT_TERMINATE;
1423 wake_up(&expired_lock_thread.elt_waitq);
1424 wait_event(expired_lock_thread.elt_waitq,
1425 expired_lock_thread.elt_state == ELT_STOPPED);
1429 OBD_FREE(ldlm_state, sizeof(*ldlm_state));
1435 int __init ldlm_init(void)
1437 ldlm_resource_slab = kmem_cache_create("ldlm_resources",
1438 sizeof(struct ldlm_resource), 0,
1439 SLAB_HWCACHE_ALIGN, NULL, NULL);
1440 if (ldlm_resource_slab == NULL)
1443 ldlm_lock_slab = kmem_cache_create("ldlm_locks",
1444 sizeof(struct ldlm_lock), 0,
1445 SLAB_HWCACHE_ALIGN, NULL, NULL);
1446 if (ldlm_lock_slab == NULL) {
1447 kmem_cache_destroy(ldlm_resource_slab);
1451 l_lock_init(&ldlm_handle_lock);
1456 void __exit ldlm_exit(void)
1458 if ( ldlm_refcount )
1459 CERROR("ldlm_refcount is %d in ldlm_exit!\n", ldlm_refcount);
1460 if (kmem_cache_destroy(ldlm_resource_slab) != 0)
1461 CERROR("couldn't free ldlm resource slab\n");
1462 if (kmem_cache_destroy(ldlm_lock_slab) != 0)
1463 CERROR("couldn't free ldlm lock slab\n");
1467 EXPORT_SYMBOL(ldlm_flock_completion_ast);
1470 EXPORT_SYMBOL(ldlm_extent_shift_kms);
1473 EXPORT_SYMBOL(ldlm_get_processing_policy);
1474 EXPORT_SYMBOL(ldlm_lock2desc);
1475 EXPORT_SYMBOL(ldlm_register_intent);
1476 EXPORT_SYMBOL(ldlm_lockname);
1477 EXPORT_SYMBOL(ldlm_typename);
1478 EXPORT_SYMBOL(ldlm_lock2handle);
1479 EXPORT_SYMBOL(__ldlm_handle2lock);
1480 EXPORT_SYMBOL(ldlm_lock_get);
1481 EXPORT_SYMBOL(ldlm_lock_put);
1482 EXPORT_SYMBOL(ldlm_lock_match);
1483 EXPORT_SYMBOL(ldlm_lock_cancel);
1484 EXPORT_SYMBOL(ldlm_lock_addref);
1485 EXPORT_SYMBOL(ldlm_lock_decref);
1486 EXPORT_SYMBOL(ldlm_lock_decref_and_cancel);
1487 EXPORT_SYMBOL(ldlm_lock_change_resource);
1488 EXPORT_SYMBOL(ldlm_lock_set_data);
1489 EXPORT_SYMBOL(ldlm_it2str);
1490 EXPORT_SYMBOL(ldlm_lock_dump);
1491 EXPORT_SYMBOL(ldlm_lock_dump_handle);
1492 EXPORT_SYMBOL(ldlm_cancel_locks_for_export);
1493 EXPORT_SYMBOL(ldlm_reprocess_all_ns);
1494 EXPORT_SYMBOL(ldlm_lock_allow_match);
1496 /* ldlm_request.c */
1497 EXPORT_SYMBOL(ldlm_completion_ast);
1498 EXPORT_SYMBOL(ldlm_expired_completion_wait);
1499 EXPORT_SYMBOL(ldlm_cli_convert);
1500 EXPORT_SYMBOL(ldlm_cli_enqueue);
1501 EXPORT_SYMBOL(ldlm_cli_cancel);
1502 EXPORT_SYMBOL(ldlm_cli_cancel_unused);
1503 EXPORT_SYMBOL(ldlm_replay_locks);
1504 EXPORT_SYMBOL(ldlm_resource_foreach);
1505 EXPORT_SYMBOL(ldlm_namespace_foreach);
1506 EXPORT_SYMBOL(ldlm_namespace_foreach_res);
1507 EXPORT_SYMBOL(ldlm_change_cbdata);
1510 EXPORT_SYMBOL(ldlm_server_blocking_ast);
1511 EXPORT_SYMBOL(ldlm_server_completion_ast);
1512 EXPORT_SYMBOL(ldlm_server_glimpse_ast);
1513 EXPORT_SYMBOL(ldlm_handle_enqueue);
1514 EXPORT_SYMBOL(ldlm_handle_cancel);
1515 EXPORT_SYMBOL(ldlm_handle_convert);
1516 EXPORT_SYMBOL(ldlm_del_waiting_lock);
1517 EXPORT_SYMBOL(ldlm_get_ref);
1518 EXPORT_SYMBOL(ldlm_put_ref);
1522 EXPORT_SYMBOL(ldlm_test);
1523 EXPORT_SYMBOL(ldlm_regression_start);
1524 EXPORT_SYMBOL(ldlm_regression_stop);
1527 /* ldlm_resource.c */
1528 EXPORT_SYMBOL(ldlm_namespace_new);
1529 EXPORT_SYMBOL(ldlm_namespace_cleanup);
1530 EXPORT_SYMBOL(ldlm_namespace_free);
1531 EXPORT_SYMBOL(ldlm_namespace_dump);
1532 EXPORT_SYMBOL(ldlm_dump_all_namespaces);
1533 EXPORT_SYMBOL(ldlm_resource_get);
1534 EXPORT_SYMBOL(ldlm_resource_putref);
1537 EXPORT_SYMBOL(l_lock);
1538 EXPORT_SYMBOL(l_unlock);
1541 EXPORT_SYMBOL(client_obd_setup);
1542 EXPORT_SYMBOL(client_obd_cleanup);
1543 EXPORT_SYMBOL(client_connect_import);
1544 EXPORT_SYMBOL(client_disconnect_export);
1545 EXPORT_SYMBOL(target_abort_recovery);
1546 EXPORT_SYMBOL(target_handle_connect);
1547 EXPORT_SYMBOL(target_destroy_export);
1548 EXPORT_SYMBOL(target_cancel_recovery_timer);
1549 EXPORT_SYMBOL(target_send_reply);
1550 EXPORT_SYMBOL(target_queue_recovery_request);
1551 EXPORT_SYMBOL(target_handle_ping);
1552 EXPORT_SYMBOL(target_handle_disconnect);
1553 EXPORT_SYMBOL(target_queue_final_reply);