183 	struct dlm_user_proc *proc;  in dlm_user_add_ast()  local
203 	proc = ua->proc;  in dlm_user_add_ast()
211 	spin_lock(&proc->asts_spin);  in dlm_user_add_ast()
215 		spin_unlock(&proc->asts_spin);  in dlm_user_add_ast()
221 		list_add_tail(&lkb->lkb_cb_list, &proc->asts);  in dlm_user_add_ast()
222 		wake_up_interruptible(&proc->wait);  in dlm_user_add_ast()
224 	spin_unlock(&proc->asts_spin);  in dlm_user_add_ast()
228 		spin_lock(&proc->locks_spin);  in dlm_user_add_ast()
233 		spin_unlock(&proc->locks_spin);  in dlm_user_add_ast()
239 static int device_user_lock(struct dlm_user_proc *proc,  in device_user_lock()  argument
247 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_lock()
259 	ua->proc = proc;  in device_user_lock()
293 static int device_user_unlock(struct dlm_user_proc *proc,  in device_user_unlock()  argument
300 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_unlock()
307 	ua->proc = proc;  in device_user_unlock()
322 static int device_user_deadlock(struct dlm_user_proc *proc,  in device_user_deadlock()  argument
328 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_deadlock()
383 static int device_user_purge(struct dlm_user_proc *proc,  in device_user_purge()  argument
389 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_purge()
393 	error = dlm_user_purge(ls, proc, params->nodeid, params->pid);  in device_user_purge()
507 	struct dlm_user_proc *proc = file->private_data;  in device_write()  local
552 		if (proc)  in device_write()
553 			set_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags);  in device_write()
562 	    (proc && test_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags))) {  in device_write()
572 		if (!proc) {  in device_write()
576 		error = device_user_lock(proc, &kbuf->i.lock);  in device_write()
580 		if (!proc) {  in device_write()
584 		error = device_user_unlock(proc, &kbuf->i.lock);  in device_write()
588 		if (!proc) {  in device_write()
592 		error = device_user_deadlock(proc, &kbuf->i.lock);  in device_write()
596 		if (proc) {  in device_write()
604 		if (proc) {  in device_write()
612 		if (!proc) {  in device_write()
616 		error = device_user_purge(proc, &kbuf->i.purge);  in device_write()
629 /* Every process that opens the lockspace device has its own "proc" structure
635 	struct dlm_user_proc *proc;  in device_open()  local
642 	proc = kzalloc(sizeof(struct dlm_user_proc), GFP_NOFS);  in device_open()
643 	if (!proc) {  in device_open()
648 	proc->lockspace = ls->ls_local_handle;  in device_open()
649 	INIT_LIST_HEAD(&proc->asts);  in device_open()
650 	INIT_LIST_HEAD(&proc->locks);  in device_open()
651 	INIT_LIST_HEAD(&proc->unlocking);  in device_open()
652 	spin_lock_init(&proc->asts_spin);  in device_open()
653 	spin_lock_init(&proc->locks_spin);  in device_open()
654 	init_waitqueue_head(&proc->wait);  in device_open()
655 	file->private_data = proc;  in device_open()
662 	struct dlm_user_proc *proc = file->private_data;  in device_close()  local
665 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_close()
669 	set_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags);  in device_close()
671 	dlm_clear_proc_locks(ls, proc);  in device_close()
675 	   looking for lkb->ua->proc */  in device_close()
677 	kfree(proc);  in device_close()
782 	struct dlm_user_proc *proc = file->private_data;  in device_read()  local
794 	if (!proc) {  in device_read()
809 	if (test_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags))  in device_read()
812 	spin_lock(&proc->asts_spin);  in device_read()
813 	if (list_empty(&proc->asts)) {  in device_read()
815 			spin_unlock(&proc->asts_spin);  in device_read()
819 		add_wait_queue(&proc->wait, &wait);  in device_read()
823 		if (list_empty(&proc->asts) && !signal_pending(current)) {  in device_read()
824 			spin_unlock(&proc->asts_spin);  in device_read()
826 			spin_lock(&proc->asts_spin);  in device_read()
830 		remove_wait_queue(&proc->wait, &wait);  in device_read()
833 			spin_unlock(&proc->asts_spin);  in device_read()
842 	lkb = list_entry(proc->asts.next, struct dlm_lkb, lkb_cb_list);  in device_read()
853 		spin_unlock(&proc->asts_spin);  in device_read()
854 		/* removes ref for proc->asts, may cause lkb to be freed */  in device_read()
860 	spin_unlock(&proc->asts_spin);  in device_read()
863 		/* removes ref for proc->asts, may cause lkb to be freed */  in device_read()
881 				 test_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags),  in device_read()
884 	/* removes ref for proc->asts, may cause lkb to be freed */  in device_read()
893 	struct dlm_user_proc *proc = file->private_data;  in device_poll()  local
895 	poll_wait(file, &proc->wait, wait);  in device_poll()
897 	spin_lock(&proc->asts_spin);  in device_poll()
898 	if (!list_empty(&proc->asts)) {  in device_poll()
899 		spin_unlock(&proc->asts_spin);  in device_poll()
902 	spin_unlock(&proc->asts_spin);  in device_poll()