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.
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 DEBUG_SUBSYSTEM S_LDLM
27 #include <linux/module.h>
28 #include <linux/slab.h>
29 #include <linux/lustre_dlm.h>
30 #include <linux/init.h>
31 #include <linux/obd_class.h>
33 extern kmem_cache_t *ldlm_resource_slab;
34 extern kmem_cache_t *ldlm_lock_slab;
35 extern struct list_head ldlm_namespace_list;
36 extern int (*mds_reint_p)(int offset, struct ptlrpc_request *req);
37 extern int (*mds_getattr_name_p)(int offset, struct ptlrpc_request *req);
39 inline unsigned long round_timeout(unsigned long timeout)
41 return ((timeout / HZ) + 1) * HZ;
44 static struct list_head waiting_locks_list;
45 static spinlock_t waiting_locks_spinlock;
46 static struct timer_list waiting_locks_timer;
47 static int ldlm_already_setup = 0;
49 static void waiting_locks_callback(unsigned long unused)
51 struct list_head *liter, *n;
53 spin_lock_bh(&waiting_locks_spinlock);
54 list_for_each_safe(liter, n, &waiting_locks_list) {
55 struct ldlm_lock *l = list_entry(liter, struct ldlm_lock,
57 if (l->l_callback_timeout > jiffies)
59 LDLM_DEBUG(l, "timer expired, recovering exp %p on conn %p",
60 l->l_export, l->l_export->exp_connection);
61 recovd_conn_fail(l->l_export->exp_connection);
63 spin_unlock_bh(&waiting_locks_spinlock);
67 * Indicate that we're waiting for a client to call us back cancelling a given
68 * lock. We add it to the pending-callback chain, and schedule the lock-timeout
69 * timer to fire appropriately. (We round up to the next second, to avoid
70 * floods of timer firings during periods of high lock contention and traffic).
72 static int ldlm_add_waiting_lock(struct ldlm_lock *lock)
74 unsigned long timeout_rounded;
77 LASSERT(list_empty(&lock->l_pending_chain));
79 spin_lock_bh(&waiting_locks_spinlock);
80 lock->l_callback_timeout = jiffies + (obd_timeout * HZ);
82 timeout_rounded = round_timeout(lock->l_callback_timeout);
84 if (timeout_rounded < waiting_locks_timer.expires ||
85 !timer_pending(&waiting_locks_timer)) {
86 mod_timer(&waiting_locks_timer, timeout_rounded);
88 list_add_tail(&lock->l_pending_chain, &waiting_locks_list); /* FIFO */
89 spin_unlock_bh(&waiting_locks_spinlock);
94 * Remove a lock from the pending list, likely because it had its cancellation
95 * callback arrive without incident. This adjusts the lock-timeout timer if
96 * needed. Returns 0 if the lock wasn't pending after all, 1 if it was.
98 int ldlm_del_waiting_lock(struct ldlm_lock *lock)
100 struct list_head *list_next;
104 spin_lock_bh(&waiting_locks_spinlock);
106 if (list_empty(&lock->l_pending_chain)) {
107 spin_unlock_bh(&waiting_locks_spinlock);
111 list_next = lock->l_pending_chain.next;
112 if (lock->l_pending_chain.prev == &waiting_locks_list) {
113 /* Removing the head of the list, adjust timer. */
114 if (list_next == &waiting_locks_list) {
115 /* No more, just cancel. */
116 del_timer(&waiting_locks_timer);
118 struct ldlm_lock *next;
119 next = list_entry(list_next, struct ldlm_lock,
121 mod_timer(&waiting_locks_timer,
122 round_timeout(next->l_callback_timeout));
125 list_del_init(&lock->l_pending_chain);
126 spin_unlock_bh(&waiting_locks_spinlock);
130 static int ldlm_server_blocking_ast(struct ldlm_lock *lock,
131 struct ldlm_lock_desc *desc,
132 void *data, __u32 data_len, int flag)
134 struct ldlm_request *body;
135 struct ptlrpc_request *req;
136 int rc = 0, size = sizeof(*body);
139 if (flag == LDLM_CB_CANCELING) {
140 /* Don't need to do anything here. */
144 req = ptlrpc_prep_req(&lock->l_export->exp_ldlm_data.led_import,
145 LDLM_BL_CALLBACK, 1, &size, NULL);
149 body = lustre_msg_buf(req->rq_reqmsg, 0);
150 memcpy(&body->lock_handle1, &lock->l_remote_handle,
151 sizeof(body->lock_handle1));
152 memcpy(&body->lock_desc, desc, sizeof(*desc));
154 LDLM_DEBUG(lock, "server preparing blocking AST");
155 req->rq_replen = 0; /* no reply needed */
157 ldlm_add_waiting_lock(lock);
158 (void)ptl_send_rpc(req);
160 /* no commit, and no waiting for reply, so 2x decref now */
161 ptlrpc_req_finished(req);
162 ptlrpc_req_finished(req);
167 static int ldlm_server_completion_ast(struct ldlm_lock *lock, int flags)
169 struct ldlm_request *body;
170 struct ptlrpc_request *req;
171 int rc = 0, size = sizeof(*body);
179 req = ptlrpc_prep_req(&lock->l_export->exp_ldlm_data.led_import,
180 LDLM_CP_CALLBACK, 1, &size, NULL);
184 body = lustre_msg_buf(req->rq_reqmsg, 0);
185 memcpy(&body->lock_handle1, &lock->l_remote_handle,
186 sizeof(body->lock_handle1));
187 body->lock_flags = flags;
188 ldlm_lock2desc(lock, &body->lock_desc);
190 LDLM_DEBUG(lock, "server preparing completion AST");
191 req->rq_replen = 0; /* no reply needed */
193 (void)ptl_send_rpc(req);
194 /* no commit, and no waiting for reply, so 2x decref now */
195 ptlrpc_req_finished(req);
196 ptlrpc_req_finished(req);
201 int ldlm_handle_enqueue(struct ptlrpc_request *req)
203 struct obd_device *obddev = req->rq_export->exp_obd;
204 struct ldlm_reply *dlm_rep;
205 struct ldlm_request *dlm_req;
206 int rc, size = sizeof(*dlm_rep), cookielen = 0;
209 struct ldlm_lock *lock = NULL;
213 LDLM_DEBUG_NOLOCK("server-side enqueue handler START");
215 dlm_req = lustre_msg_buf(req->rq_reqmsg, 0);
216 flags = dlm_req->lock_flags;
217 if (dlm_req->lock_desc.l_resource.lr_type == LDLM_PLAIN &&
218 (flags & LDLM_FL_HAS_INTENT)) {
219 /* In this case, the reply buffer is allocated deep in
220 * local_lock_enqueue by the policy function. */
222 cookielen = sizeof(*req);
224 rc = lustre_pack_msg(1, &size, NULL, &req->rq_replen,
227 CERROR("out of memory\n");
230 if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT) {
231 cookie = &dlm_req->lock_desc.l_extent;
232 cookielen = sizeof(struct ldlm_extent);
236 /* XXX notice that this lock has no callback data: of course the
237 export would be exactly what we may want to use here... */
238 lock = ldlm_lock_create(obddev->obd_namespace,
239 &dlm_req->lock_handle2,
240 dlm_req->lock_desc.l_resource.lr_name,
241 dlm_req->lock_desc.l_resource.lr_type,
242 dlm_req->lock_desc.l_req_mode, NULL, 0);
244 GOTO(out, err = -ENOMEM);
246 memcpy(&lock->l_remote_handle, &dlm_req->lock_handle1,
247 sizeof(lock->l_remote_handle));
248 LDLM_DEBUG(lock, "server-side enqueue handler, new lock created");
250 err = ldlm_lock_enqueue(lock, cookie, cookielen, &flags,
251 ldlm_server_completion_ast,
252 ldlm_server_blocking_ast);
256 dlm_rep = lustre_msg_buf(req->rq_repmsg, 0);
257 dlm_rep->lock_flags = flags;
259 ldlm_lock2handle(lock, &dlm_rep->lock_handle);
260 if (dlm_req->lock_desc.l_resource.lr_type == LDLM_EXTENT)
261 memcpy(&dlm_rep->lock_extent, &lock->l_extent,
262 sizeof(lock->l_extent));
263 if (dlm_rep->lock_flags & LDLM_FL_LOCK_CHANGED) {
264 memcpy(dlm_rep->lock_resource_name, lock->l_resource->lr_name,
265 sizeof(dlm_rep->lock_resource_name));
266 dlm_rep->lock_mode = lock->l_req_mode;
269 lock->l_export = req->rq_export;
270 if (lock->l_export) {
271 l_lock(&lock->l_resource->lr_namespace->ns_lock);
272 list_add(&lock->l_export_chain,
273 &lock->l_export->exp_ldlm_data.led_held_locks);
274 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
280 LDLM_DEBUG(lock, "server-side enqueue handler, sending reply"
282 req->rq_status = err;
286 ldlm_reprocess_all(lock->l_resource);
289 LDLM_DEBUG_NOLOCK("server-side enqueue handler END (lock %p)", lock);
294 int ldlm_handle_convert(struct ptlrpc_request *req)
296 struct ldlm_request *dlm_req;
297 struct ldlm_reply *dlm_rep;
298 struct ldlm_lock *lock;
299 int rc, size = sizeof(*dlm_rep);
302 rc = lustre_pack_msg(1, &size, NULL, &req->rq_replen, &req->rq_repmsg);
304 CERROR("out of memory\n");
307 dlm_req = lustre_msg_buf(req->rq_reqmsg, 0);
308 dlm_rep = lustre_msg_buf(req->rq_repmsg, 0);
309 dlm_rep->lock_flags = dlm_req->lock_flags;
311 lock = ldlm_handle2lock(&dlm_req->lock_handle1);
313 req->rq_status = EINVAL;
315 LDLM_DEBUG(lock, "server-side convert handler START");
316 ldlm_lock_convert(lock, dlm_req->lock_desc.l_req_mode,
317 &dlm_rep->lock_flags);
318 if (ldlm_del_waiting_lock(lock))
319 CDEBUG(D_DLMTRACE, "converted waiting lock %p\n", lock);
324 ldlm_reprocess_all(lock->l_resource);
325 LDLM_DEBUG(lock, "server-side convert handler END");
328 LDLM_DEBUG_NOLOCK("server-side convert handler END");
333 int ldlm_handle_cancel(struct ptlrpc_request *req)
335 struct ldlm_request *dlm_req;
336 struct ldlm_lock *lock;
340 rc = lustre_pack_msg(0, NULL, NULL, &req->rq_replen, &req->rq_repmsg);
342 CERROR("out of memory\n");
345 dlm_req = lustre_msg_buf(req->rq_reqmsg, 0);
347 CERROR("bad request buffer for cancel\n");
351 lock = ldlm_handle2lock(&dlm_req->lock_handle1);
353 LDLM_DEBUG_NOLOCK("server-side cancel handler stale lock (lock "
354 "%p)", (void *)(unsigned long)
355 dlm_req->lock_handle1.addr);
356 req->rq_status = ESTALE;
358 LDLM_DEBUG(lock, "server-side cancel handler START");
359 ldlm_lock_cancel(lock);
360 if (ldlm_del_waiting_lock(lock))
361 CDEBUG(D_DLMTRACE, "cancelled waiting lock %p\n", lock);
365 if (ptlrpc_reply(req->rq_svc, req) != 0)
369 ldlm_reprocess_all(lock->l_resource);
370 LDLM_DEBUG(lock, "server-side cancel handler END");
377 static int ldlm_handle_bl_callback(struct ptlrpc_request *req)
379 struct ldlm_request *dlm_req;
380 struct ldlm_lock *lock;
384 OBD_FAIL_RETURN(OBD_FAIL_OSC_LOCK_BL_AST, 0);
386 dlm_req = lustre_msg_buf(req->rq_reqmsg, 0);
388 lock = ldlm_handle2lock(&dlm_req->lock_handle1);
390 CERROR("blocking callback on lock "LPX64" - lock disappeared\n",
391 dlm_req->lock_handle1.addr);
395 LDLM_DEBUG(lock, "client blocking AST callback handler START");
397 l_lock(&lock->l_resource->lr_namespace->ns_lock);
398 lock->l_flags |= LDLM_FL_CBPENDING;
399 do_ast = (!lock->l_readers && !lock->l_writers);
400 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
403 LDLM_DEBUG(lock, "already unused, calling "
404 "callback (%p)", lock->l_blocking_ast);
405 if (lock->l_blocking_ast != NULL) {
406 lock->l_blocking_ast(lock, &dlm_req->lock_desc,
407 lock->l_data, lock->l_data_len,
411 LDLM_DEBUG(lock, "Lock still has references, will be"
414 LDLM_DEBUG(lock, "client blocking callback handler END");
419 static int ldlm_handle_cp_callback(struct ptlrpc_request *req)
421 struct list_head ast_list = LIST_HEAD_INIT(ast_list);
422 struct ldlm_request *dlm_req;
423 struct ldlm_lock *lock;
426 OBD_FAIL_RETURN(OBD_FAIL_OSC_LOCK_CP_AST, 0);
428 dlm_req = lustre_msg_buf(req->rq_reqmsg, 0);
430 lock = ldlm_handle2lock(&dlm_req->lock_handle1);
432 CERROR("completion callback on lock "LPX64" - lock "
433 "disappeared\n", dlm_req->lock_handle1.addr);
437 LDLM_DEBUG(lock, "client completion callback handler START");
439 l_lock(&lock->l_resource->lr_namespace->ns_lock);
441 /* If we receive the completion AST before the actual enqueue returned,
442 * then we might need to switch lock modes, resources, or extents. */
443 if (dlm_req->lock_desc.l_granted_mode != lock->l_req_mode) {
444 lock->l_req_mode = dlm_req->lock_desc.l_granted_mode;
445 LDLM_DEBUG(lock, "completion AST, new lock mode");
447 if (lock->l_resource->lr_type == LDLM_EXTENT)
448 memcpy(&lock->l_extent, &dlm_req->lock_desc.l_extent,
449 sizeof(lock->l_extent));
450 ldlm_resource_unlink_lock(lock);
451 if (memcmp(dlm_req->lock_desc.l_resource.lr_name,
452 lock->l_resource->lr_name,
453 sizeof(__u64) * RES_NAME_SIZE) != 0) {
454 ldlm_lock_change_resource(lock,
455 dlm_req->lock_desc.l_resource.lr_name);
456 LDLM_DEBUG(lock, "completion AST, new resource");
458 lock->l_resource->lr_tmp = &ast_list;
459 ldlm_grant_lock(lock);
460 lock->l_resource->lr_tmp = NULL;
461 l_unlock(&lock->l_resource->lr_namespace->ns_lock);
462 LDLM_DEBUG(lock, "callback handler finished, about to run_ast_work");
465 ldlm_run_ast_work(&ast_list);
467 LDLM_DEBUG_NOLOCK("client completion callback handler END (lock %p)",
472 static int ldlm_callback_handler(struct ptlrpc_request *req)
477 rc = lustre_unpack_msg(req->rq_reqmsg, req->rq_reqlen);
479 CERROR("lustre_ldlm: Invalid request: %d\n", rc);
483 if (req->rq_export == NULL) {
484 CERROR("lustre_dlm: operation %d with missing/invalid export\n",
485 req->rq_reqmsg->opc);
486 CERROR("--> export addr: "LPX64", cookie: "LPX64"\n",
487 req->rq_reqmsg->addr, req->rq_reqmsg->cookie);
488 CERROR("--> ignoring this error as a temporary workaround! "
493 switch (req->rq_reqmsg->opc) {
494 case LDLM_BL_CALLBACK:
495 CDEBUG(D_INODE, "blocking ast\n");
496 OBD_FAIL_RETURN(OBD_FAIL_LDLM_BL_CALLBACK, 0);
497 rc = ldlm_handle_bl_callback(req);
499 case LDLM_CP_CALLBACK:
500 CDEBUG(D_INODE, "completion ast\n");
501 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CP_CALLBACK, 0);
502 rc = ldlm_handle_cp_callback(req);
506 CERROR("invalid opcode %d\n", req->rq_reqmsg->opc);
514 static int ldlm_cancel_handler(struct ptlrpc_request *req)
519 rc = lustre_unpack_msg(req->rq_reqmsg, req->rq_reqlen);
521 CERROR("lustre_ldlm: Invalid request: %d\n", rc);
525 if (req->rq_export == NULL) {
526 CERROR("lustre_dlm: operation %d with missing/invalid export\n",
527 req->rq_reqmsg->opc);
531 switch (req->rq_reqmsg->opc) {
533 /* XXX FIXME move this back to mds/handler.c, bug 625069 */
535 CDEBUG(D_INODE, "cancel\n");
536 OBD_FAIL_RETURN(OBD_FAIL_LDLM_CANCEL, 0);
537 rc = ldlm_handle_cancel(req);
543 CERROR("invalid opcode %d\n", req->rq_reqmsg->opc);
551 static int ldlm_iocontrol(long cmd, struct lustre_handle *conn, int len,
552 void *karg, void *uarg)
554 struct obd_device *obddev = class_conn2obd(conn);
555 struct ptlrpc_connection *connection;
559 if (_IOC_TYPE(cmd) != IOC_LDLM_TYPE || _IOC_NR(cmd) < IOC_LDLM_MIN_NR ||
560 _IOC_NR(cmd) > IOC_LDLM_MAX_NR) {
561 CDEBUG(D_IOCTL, "invalid ioctl (type %ld, nr %ld, size %ld)\n",
562 _IOC_TYPE(cmd), _IOC_NR(cmd), _IOC_SIZE(cmd));
566 OBD_ALLOC(obddev->u.ldlm.ldlm_client,
567 sizeof(*obddev->u.ldlm.ldlm_client));
568 connection = ptlrpc_uuid_to_connection("ldlm");
570 CERROR("No LDLM UUID found: assuming ldlm is local.\n");
574 err = ldlm_test(obddev, conn);
575 CERROR("-- done err %d\n", err);
578 ldlm_dump_all_namespaces();
581 GOTO(out, err = -EINVAL);
586 ptlrpc_put_connection(connection);
587 OBD_FREE(obddev->u.ldlm.ldlm_client,
588 sizeof(*obddev->u.ldlm.ldlm_client));
592 static int ldlm_setup(struct obd_device *obddev, obd_count len, void *buf)
594 struct ldlm_obd *ldlm = &obddev->u.ldlm;
598 if (ldlm_already_setup)
603 rc = ldlm_proc_setup(obddev);
607 ldlm->ldlm_cb_service =
608 ptlrpc_init_svc(LDLM_NEVENTS, LDLM_NBUFS, LDLM_BUFSIZE,
609 LDLM_MAXREQSIZE, LDLM_CB_REQUEST_PORTAL,
610 LDLM_CB_REPLY_PORTAL, "self",
611 ldlm_callback_handler, "ldlm_cbd");
613 if (!ldlm->ldlm_cb_service) {
614 CERROR("failed to start service\n");
615 GOTO(out_proc, rc = -ENOMEM);
618 ldlm->ldlm_cancel_service =
619 ptlrpc_init_svc(LDLM_NEVENTS, LDLM_NBUFS, LDLM_BUFSIZE,
620 LDLM_MAXREQSIZE, LDLM_CANCEL_REQUEST_PORTAL,
621 LDLM_CANCEL_REPLY_PORTAL, "self",
622 ldlm_cancel_handler, "ldlm_canceld");
624 if (!ldlm->ldlm_cancel_service) {
625 CERROR("failed to start service\n");
626 GOTO(out_proc, rc = -ENOMEM);
629 for (i = 0; i < LDLM_NUM_THREADS; i++) {
631 sprintf(name, "ldlm_%02d", i);
632 rc = ptlrpc_start_thread(obddev, ldlm->ldlm_cancel_service,
635 CERROR("cannot start LDLM thread #%d: rc %d\n", i, rc);
637 GOTO(out_thread, rc);
641 for (i = 0; i < LDLM_NUM_THREADS; i++) {
643 sprintf(name, "ldlm_%02d", i);
644 rc = ptlrpc_start_thread(obddev, ldlm->ldlm_cb_service, name);
646 CERROR("cannot start LDLM thread #%d: rc %d\n", i, rc);
648 GOTO(out_thread, rc);
652 INIT_LIST_HEAD(&waiting_locks_list);
653 spin_lock_init(&waiting_locks_spinlock);
654 waiting_locks_timer.function = waiting_locks_callback;
655 waiting_locks_timer.data = 0;
656 init_timer(&waiting_locks_timer);
658 ldlm_already_setup = 1;
663 ptlrpc_stop_all_threads(ldlm->ldlm_cancel_service);
664 ptlrpc_unregister_service(ldlm->ldlm_cancel_service);
665 ptlrpc_stop_all_threads(ldlm->ldlm_cb_service);
666 ptlrpc_unregister_service(ldlm->ldlm_cb_service);
669 ldlm_proc_cleanup(obddev);
676 static int ldlm_cleanup(struct obd_device *obddev)
678 struct ldlm_obd *ldlm = &obddev->u.ldlm;
681 if (!list_empty(&ldlm_namespace_list)) {
682 CERROR("ldlm still has namespaces; clean these up first.\n");
686 ptlrpc_stop_all_threads(ldlm->ldlm_cb_service);
687 ptlrpc_unregister_service(ldlm->ldlm_cb_service);
688 ptlrpc_stop_all_threads(ldlm->ldlm_cancel_service);
689 ptlrpc_unregister_service(ldlm->ldlm_cancel_service);
690 ldlm_proc_cleanup(obddev);
692 ldlm_already_setup = 0;
697 static int ldlm_connect(struct lustre_handle *conn, struct obd_device *src,
698 obd_uuid_t cluuid, struct recovd_obd *recovd,
699 ptlrpc_recovery_cb_t recover)
701 return class_connect(conn, src, cluuid);
704 struct obd_ops ldlm_obd_ops = {
705 o_iocontrol: ldlm_iocontrol,
707 o_cleanup: ldlm_cleanup,
708 o_connect: ldlm_connect,
709 o_disconnect: class_disconnect
712 static int __init ldlm_init(void)
714 int rc = class_register_type(&ldlm_obd_ops, 0, OBD_LDLM_DEVICENAME);
718 ldlm_resource_slab = kmem_cache_create("ldlm_resources",
719 sizeof(struct ldlm_resource), 0,
720 SLAB_HWCACHE_ALIGN, NULL, NULL);
721 if (ldlm_resource_slab == NULL)
724 ldlm_lock_slab = kmem_cache_create("ldlm_locks",
725 sizeof(struct ldlm_lock), 0,
726 SLAB_HWCACHE_ALIGN, NULL, NULL);
727 if (ldlm_lock_slab == NULL) {
728 kmem_cache_destroy(ldlm_resource_slab);
735 static void __exit ldlm_exit(void)
737 class_unregister_type(OBD_LDLM_DEVICENAME);
738 if (kmem_cache_destroy(ldlm_resource_slab) != 0)
739 CERROR("couldn't free ldlm resource slab\n");
740 if (kmem_cache_destroy(ldlm_lock_slab) != 0)
741 CERROR("couldn't free ldlm lock slab\n");
744 EXPORT_SYMBOL(ldlm_completion_ast);
745 EXPORT_SYMBOL(ldlm_handle_enqueue);
746 EXPORT_SYMBOL(ldlm_handle_cancel);
747 EXPORT_SYMBOL(ldlm_handle_convert);
748 EXPORT_SYMBOL(ldlm_register_intent);
749 EXPORT_SYMBOL(ldlm_unregister_intent);
750 EXPORT_SYMBOL(ldlm_lockname);
751 EXPORT_SYMBOL(ldlm_typename);
752 EXPORT_SYMBOL(__ldlm_handle2lock);
753 EXPORT_SYMBOL(ldlm_lock2handle);
754 EXPORT_SYMBOL(ldlm_lock_put);
755 EXPORT_SYMBOL(ldlm_lock_match);
756 EXPORT_SYMBOL(ldlm_lock_addref);
757 EXPORT_SYMBOL(ldlm_lock_decref);
758 EXPORT_SYMBOL(ldlm_lock_change_resource);
759 EXPORT_SYMBOL(ldlm_lock_set_data);
760 EXPORT_SYMBOL(ldlm_cli_convert);
761 EXPORT_SYMBOL(ldlm_cli_enqueue);
762 EXPORT_SYMBOL(ldlm_cli_cancel);
763 EXPORT_SYMBOL(ldlm_cli_cancel_unused);
764 EXPORT_SYMBOL(ldlm_match_or_enqueue);
765 EXPORT_SYMBOL(ldlm_it2str);
766 EXPORT_SYMBOL(ldlm_test);
767 EXPORT_SYMBOL(ldlm_regression_start);
768 EXPORT_SYMBOL(ldlm_regression_stop);
769 EXPORT_SYMBOL(ldlm_lock_dump);
770 EXPORT_SYMBOL(ldlm_namespace_new);
771 EXPORT_SYMBOL(ldlm_namespace_cleanup);
772 EXPORT_SYMBOL(ldlm_namespace_free);
773 EXPORT_SYMBOL(ldlm_namespace_dump);
774 EXPORT_SYMBOL(ldlm_cancel_locks_for_export);
775 EXPORT_SYMBOL(l_lock);
776 EXPORT_SYMBOL(l_unlock);
778 MODULE_AUTHOR("Cluster File Systems, Inc. <info@clusterfs.com>");
779 MODULE_DESCRIPTION("Lustre Lock Management Module v0.1");
780 MODULE_LICENSE("GPL");
782 module_init(ldlm_init);
783 module_exit(ldlm_exit);