183 	struct dlm_user_proc *proc;  in dlm_user_add_ast()  local
206 	proc = ua->proc;  in dlm_user_add_ast()
214 	spin_lock_bh(&proc->asts_spin);  in dlm_user_add_ast()
229 			list_add_tail(&cb->list, &proc->asts);  in dlm_user_add_ast()
230 			wake_up_interruptible(&proc->wait);  in dlm_user_add_ast()
233 	spin_unlock_bh(&proc->asts_spin);  in dlm_user_add_ast()
237 		spin_lock_bh(&proc->locks_spin);  in dlm_user_add_ast()
242 		spin_unlock_bh(&proc->locks_spin);  in dlm_user_add_ast()
248 static int device_user_lock(struct dlm_user_proc *proc,  in device_user_lock()  argument
256 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_lock()
268 	ua->proc = proc;  in device_user_lock()
299 static int device_user_unlock(struct dlm_user_proc *proc,  in device_user_unlock()  argument
306 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_unlock()
313 	ua->proc = proc;  in device_user_unlock()
328 static int device_user_deadlock(struct dlm_user_proc *proc,  in device_user_deadlock()  argument
334 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_deadlock()
389 static int device_user_purge(struct dlm_user_proc *proc,  in device_user_purge()  argument
395 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_user_purge()
399 	error = dlm_user_purge(ls, proc, params->nodeid, params->pid);  in device_user_purge()
513 	struct dlm_user_proc *proc = file->private_data;  in device_write()  local
558 		if (proc)  in device_write()
559 			set_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags);  in device_write()
568 	    (proc && test_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags))) {  in device_write()
578 		if (!proc) {  in device_write()
582 		error = device_user_lock(proc, &kbuf->i.lock);  in device_write()
586 		if (!proc) {  in device_write()
590 		error = device_user_unlock(proc, &kbuf->i.lock);  in device_write()
594 		if (!proc) {  in device_write()
598 		error = device_user_deadlock(proc, &kbuf->i.lock);  in device_write()
602 		if (proc) {  in device_write()
610 		if (proc) {  in device_write()
618 		if (!proc) {  in device_write()
622 		error = device_user_purge(proc, &kbuf->i.purge);  in device_write()
635 /* Every process that opens the lockspace device has its own "proc" structure
641 	struct dlm_user_proc *proc;  in device_open()  local
648 	proc = kzalloc(sizeof(struct dlm_user_proc), GFP_NOFS);  in device_open()
649 	if (!proc) {  in device_open()
654 	proc->lockspace = ls;  in device_open()
655 	INIT_LIST_HEAD(&proc->asts);  in device_open()
656 	INIT_LIST_HEAD(&proc->locks);  in device_open()
657 	INIT_LIST_HEAD(&proc->unlocking);  in device_open()
658 	spin_lock_init(&proc->asts_spin);  in device_open()
659 	spin_lock_init(&proc->locks_spin);  in device_open()
660 	init_waitqueue_head(&proc->wait);  in device_open()
661 	file->private_data = proc;  in device_open()
668 	struct dlm_user_proc *proc = file->private_data;  in device_close()  local
671 	ls = dlm_find_lockspace_local(proc->lockspace);  in device_close()
675 	set_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags);  in device_close()
677 	dlm_clear_proc_locks(ls, proc);  in device_close()
681 	   looking for lkb->ua->proc */  in device_close()
683 	kfree(proc);  in device_close()
788 	struct dlm_user_proc *proc = file->private_data;  in device_read()  local
798 	if (!proc) {  in device_read()
811 	if (test_bit(DLM_PROC_FLAGS_CLOSING, &proc->flags))  in device_read()
814 	spin_lock_bh(&proc->asts_spin);  in device_read()
815 	if (list_empty(&proc->asts)) {  in device_read()
817 			spin_unlock_bh(&proc->asts_spin);  in device_read()
821 		add_wait_queue(&proc->wait, &wait);  in device_read()
825 		if (list_empty(&proc->asts) && !signal_pending(current)) {  in device_read()
826 			spin_unlock_bh(&proc->asts_spin);  in device_read()
828 			spin_lock_bh(&proc->asts_spin);  in device_read()
832 		remove_wait_queue(&proc->wait, &wait);  in device_read()
835 			spin_unlock_bh(&proc->asts_spin);  in device_read()
844 	cb = list_first_entry(&proc->asts, struct dlm_callback, list);  in device_read()
846 	spin_unlock_bh(&proc->asts_spin);  in device_read()
859 				  test_bit(DLM_PROC_FLAGS_COMPAT, &proc->flags),  in device_read()
867 	struct dlm_user_proc *proc = file->private_data;  in device_poll()  local
869 	poll_wait(file, &proc->wait, wait);  in device_poll()
871 	spin_lock_bh(&proc->asts_spin);  in device_poll()
872 	if (!list_empty(&proc->asts)) {  in device_poll()
873 		spin_unlock_bh(&proc->asts_spin);  in device_poll()
876 	spin_unlock_bh(&proc->asts_spin);  in device_poll()