180 	struct dlm_user_proc *proc;  in dlm_user_add_ast()  local
200 	proc = ua->proc;  in dlm_user_add_ast()
208 	spin_lock(&proc->asts_spin);  in dlm_user_add_ast()
212 		spin_unlock(&proc->asts_spin);  in dlm_user_add_ast()
218 		list_add_tail(&lkb->lkb_cb_list, &proc->asts);  in dlm_user_add_ast()
219 		wake_up_interruptible(&proc->wait);  in dlm_user_add_ast()
221 	spin_unlock(&proc->asts_spin);  in dlm_user_add_ast()
225 		spin_lock(&proc->locks_spin);  in dlm_user_add_ast()
230 		spin_unlock(&proc->locks_spin);  in dlm_user_add_ast()
236 static int device_user_lock(struct dlm_user_proc *proc,  in device_user_lock()  argument
244 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_lock()
256 	ua->proc = proc;  in device_user_lock()
290 static int device_user_unlock(struct dlm_user_proc *proc,  in device_user_unlock()  argument
297 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_unlock()
304 	ua->proc = proc;  in device_user_unlock()
319 static int device_user_deadlock(struct dlm_user_proc *proc,  in device_user_deadlock()  argument
325 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_deadlock()
380 static int device_user_purge(struct dlm_user_proc *proc,  in device_user_purge()  argument
386 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_purge()
390 	error = dlm_user_purge(ls, proc, params->nodeid, params->pid);  in device_user_purge()
504 	struct dlm_user_proc *proc = file->private_data;  in device_write()  local
549 		if (proc)  in device_write()
550 			set_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags);  in device_write()
559 	    (proc && test_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags))) {  in device_write()
569 		if (!proc) {  in device_write()
573 		error = device_user_lock(proc, &kbuf->i.lock);  in device_write()
577 		if (!proc) {  in device_write()
581 		error = device_user_unlock(proc, &kbuf->i.lock);  in device_write()
585 		if (!proc) {  in device_write()
589 		error = device_user_deadlock(proc, &kbuf->i.lock);  in device_write()
593 		if (proc) {  in device_write()
601 		if (proc) {  in device_write()
609 		if (!proc) {  in device_write()
613 		error = device_user_purge(proc, &kbuf->i.purge);  in device_write()
626 /* Every process that opens the lockspace device has its own "proc" structure
632 	struct dlm_user_proc *proc;  in device_open()  local
639 	proc = kzalloc(sizeof(struct dlm_user_proc), GFP_NOFS);  in device_open()
640 	if (!proc) {  in device_open()
645 	proc->lockspace = ls->ls_local_handle;  in device_open()
646 	INIT_LIST_HEAD(&proc->asts);  in device_open()
647 	INIT_LIST_HEAD(&proc->locks);  in device_open()
648 	INIT_LIST_HEAD(&proc->unlocking);  in device_open()
649 	spin_lock_init(&proc->asts_spin);  in device_open()
650 	spin_lock_init(&proc->locks_spin);  in device_open()
651 	init_waitqueue_head(&proc->wait);  in device_open()
652 	file->private_data = proc;  in device_open()
659 	struct dlm_user_proc *proc = file->private_data;  in device_close()  local
662 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_close()
666 	set_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags);  in device_close()
668 	dlm_clear_proc_locks(ls, proc);  in device_close()
672 	   looking for lkb->ua->proc */  in device_close()
674 	kfree(proc);  in device_close()
779 	struct dlm_user_proc *proc = file->private_data;  in device_read()  local
791 	if (!proc) {  in device_read()
806 	if (test_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags))  in device_read()
809 	spin_lock(&proc->asts_spin);  in device_read()
810 	if (list_empty(&proc->asts)) {  in device_read()
812 			spin_unlock(&proc->asts_spin);  in device_read()
816 		add_wait_queue(&proc->wait, &wait);  in device_read()
820 		if (list_empty(&proc->asts) && !signal_pending(current)) {  in device_read()
821 			spin_unlock(&proc->asts_spin);  in device_read()
823 			spin_lock(&proc->asts_spin);  in device_read()
827 		remove_wait_queue(&proc->wait, &wait);  in device_read()
830 			spin_unlock(&proc->asts_spin);  in device_read()
839 	lkb = list_entry(proc->asts.next, struct dlm_lkb, lkb_cb_list);  in device_read()
850 		spin_unlock(&proc->asts_spin);  in device_read()
851 		/* removes ref for proc->asts, may cause lkb to be freed */  in device_read()
857 	spin_unlock(&proc->asts_spin);  in device_read()
860 		/* removes ref for proc->asts, may cause lkb to be freed */  in device_read()
878 				 test_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags),  in device_read()
881 	/* removes ref for proc->asts, may cause lkb to be freed */  in device_read()
890 	struct dlm_user_proc *proc = file->private_data;  in device_poll()  local
892 	poll_wait(file, &proc->wait, wait);  in device_poll()
894 	spin_lock(&proc->asts_spin);  in device_poll()
895 	if (!list_empty(&proc->asts)) {  in device_poll()
896 		spin_unlock(&proc->asts_spin);  in device_poll()
899 	spin_unlock(&proc->asts_spin);  in device_poll()