62 					       struct dlm_lock *lock, int flags);
66 static void dlm_lock_detach_lockres(struct dlm_lock *lock);
92 				  struct dlm_lock *lock)  in dlm_can_grant_new_lock()  argument
97 		if (!dlm_lock_compatible(tmplock->ml.type, lock->ml.type))  in dlm_can_grant_new_lock()
102 		if (!dlm_lock_compatible(tmplock->ml.type, lock->ml.type))  in dlm_can_grant_new_lock()
105 					 lock->ml.type))  in dlm_can_grant_new_lock()
121 				      struct dlm_lock *lock, int flags)  in dlmlock_master()  argument
126 	mlog(0, "type=%d\n", lock->ml.type);  in dlmlock_master()
133 	    lock->ml.node != dlm->node_num) {  in dlmlock_master()
142 	if (dlm_can_grant_new_lock(res, lock)) {  in dlmlock_master()
145 		lock->lksb->status = DLM_NORMAL;  in dlmlock_master()
147 		dlm_lock_get(lock);  in dlmlock_master()
148 		list_add_tail(&lock->list, &res->granted);  in dlmlock_master()
162 			     lock->ml.node);  in dlmlock_master()
173 				     lock->ml.node);  in dlmlock_master()
177 			dlm_lock_get(lock);  in dlmlock_master()
178 			list_add_tail(&lock->list, &res->blocked);  in dlmlock_master()
188 		dlm_queue_ast(dlm, lock);  in dlmlock_master()
200 			     struct dlm_lock *lock)  in dlm_revert_pending_lock()  argument
203 	list_del_init(&lock->list);  in dlm_revert_pending_lock()
204 	lock->lksb->flags &= ~DLM_LKSB_GET_LVB;  in dlm_revert_pending_lock()
217 				      struct dlm_lock *lock, int flags)  in dlmlock_remote()  argument
223 	     lock->ml.type, res->lockname.len,  in dlmlock_remote()
239 	dlm_lock_get(lock);  in dlmlock_remote()
240 	list_add_tail(&lock->list, &res->blocked);  in dlmlock_remote()
241 	lock->lock_pending = 1;  in dlmlock_remote()
246 	status = dlm_send_remote_lock_request(dlm, res, lock, flags);  in dlmlock_remote()
250 	lock->lock_pending = 0;  in dlmlock_remote()
271 		dlm_revert_pending_lock(res, lock);  in dlmlock_remote()
272 		dlm_lock_put(lock);  in dlmlock_remote()
282 		list_move_tail(&lock->list, &res->granted);  in dlmlock_remote()
303 					       struct dlm_lock *lock, int flags)  in dlm_send_remote_lock_request()  argument
311 	create.requested_type = lock->ml.type;  in dlm_send_remote_lock_request()
312 	create.cookie = lock->ml.cookie;  in dlm_send_remote_lock_request()
342 void dlm_lock_get(struct dlm_lock *lock)  in dlm_lock_get()  argument
344 	kref_get(&lock->lock_refs);  in dlm_lock_get()
347 void dlm_lock_put(struct dlm_lock *lock)  in dlm_lock_put()  argument
349 	kref_put(&lock->lock_refs, dlm_lock_release);  in dlm_lock_put()
354 	struct dlm_lock *lock;  in dlm_lock_release()  local
356 	lock = container_of(kref, struct dlm_lock, lock_refs);  in dlm_lock_release()
358 	BUG_ON(!list_empty(&lock->list));  in dlm_lock_release()
359 	BUG_ON(!list_empty(&lock->ast_list));  in dlm_lock_release()
360 	BUG_ON(!list_empty(&lock->bast_list));  in dlm_lock_release()
361 	BUG_ON(lock->ast_pending);  in dlm_lock_release()
362 	BUG_ON(lock->bast_pending);  in dlm_lock_release()
364 	dlm_lock_detach_lockres(lock);  in dlm_lock_release()
366 	if (lock->lksb_kernel_allocated) {  in dlm_lock_release()
368 		kfree(lock->lksb);  in dlm_lock_release()
370 	kmem_cache_free(dlm_lock_cache, lock);  in dlm_lock_release()
374 void dlm_lock_attach_lockres(struct dlm_lock *lock,  in dlm_lock_attach_lockres()  argument
378 	lock->lockres = res;  in dlm_lock_attach_lockres()
382 static void dlm_lock_detach_lockres(struct dlm_lock *lock)  in dlm_lock_detach_lockres()  argument
386 	res = lock->lockres;  in dlm_lock_detach_lockres()
388 		lock->lockres = NULL;  in dlm_lock_detach_lockres()
426 	struct dlm_lock *lock;  in dlm_new_lock()  local
429 	lock = kmem_cache_zalloc(dlm_lock_cache, GFP_NOFS);  in dlm_new_lock()
430 	if (!lock)  in dlm_new_lock()
437 			kmem_cache_free(dlm_lock_cache, lock);  in dlm_new_lock()
443 	dlm_init_lock(lock, type, node, cookie);  in dlm_new_lock()
445 		lock->lksb_kernel_allocated = 1;  in dlm_new_lock()
446 	lock->lksb = lksb;  in dlm_new_lock()
447 	lksb->lockid = lock;  in dlm_new_lock()
448 	return lock;  in dlm_new_lock()
565 	struct dlm_lock *lock = NULL;  in dlmlock()  local
604 		lock = lksb->lockid;  in dlmlock()
605 		if (!lock) {  in dlmlock()
611 		res = lock->lockres;  in dlmlock()
624 		if (lock->lksb != lksb || lock->ast != ast ||  in dlmlock()
625 		    lock->bast != bast || lock->astdata != data) {  in dlmlock()
630 			     "astdata=%p\n", lock->lksb, lock->ast,  in dlmlock()
631 			     lock->bast, lock->astdata);  in dlmlock()
638 			status = dlmconvert_master(dlm, res, lock, flags, mode);  in dlmlock()
640 			status = dlmconvert_remote(dlm, res, lock, flags, mode);  in dlmlock()
669 		lock = dlm_new_lock(mode, dlm->node_num, tmpcookie, lksb);  in dlmlock()
670 		if (!lock) {  in dlmlock()
687 		mlog(0, "creating lock: lock=%p res=%p\n", lock, res);  in dlmlock()
689 		dlm_lock_attach_lockres(lock, res);  in dlmlock()
690 		lock->ast = ast;  in dlmlock()
691 		lock->bast = bast;  in dlmlock()
692 		lock->astdata = data;  in dlmlock()
704 				lock->lksb->flags |= DLM_LKSB_GET_LVB;  in dlmlock()
709 			status = dlmlock_master(dlm, res, lock, flags);  in dlmlock()
711 			status = dlmlock_remote(dlm, res, lock, flags);  in dlmlock()
739 			lock->lksb->flags &= ~DLM_LKSB_GET_LVB;  in dlmlock()
748 		if (lock && !convert)  in dlmlock()
749 			dlm_lock_put(lock);  in dlmlock()