161 	struct userfaultfd_wait_queue *uwq;  in userfaultfd_wake_function()  local
164 	uwq = container_of(wq, struct userfaultfd_wait_queue, wq);  in userfaultfd_wake_function()
169 	if (len && (start > uwq->msg.arg.pagefault.address ||  in userfaultfd_wake_function()
170 		    start + len <= uwq->msg.arg.pagefault.address))  in userfaultfd_wake_function()
172 	WRITE_ONCE(uwq->waken, true);  in userfaultfd_wake_function()
417 	struct userfaultfd_wait_queue uwq;  in handle_userfault()  local
519 	init_waitqueue_func_entry(&uwq.wq, userfaultfd_wake_function);  in handle_userfault()
520 	uwq.wq.private = current;  in handle_userfault()
521 	uwq.msg = userfault_msg(vmf->address, vmf->real_address, vmf->flags,  in handle_userfault()
523 	uwq.ctx = ctx;  in handle_userfault()
524 	uwq.waken = false;  in handle_userfault()
542 	__add_wait_queue(&ctx->fault_pending_wqh, &uwq.wq);  in handle_userfault()
579 	if (!list_empty_careful(&uwq.wq.entry)) {  in handle_userfault()
585 		list_del(&uwq.wq.entry);  in handle_userfault()
966 	struct userfaultfd_wait_queue *uwq;  in find_userfault_in()  local
970 	uwq = NULL;  in find_userfault_in()
975 	uwq = container_of(wq, struct userfaultfd_wait_queue, wq);  in find_userfault_in()
977 	return uwq;  in find_userfault_in()
1051 	struct userfaultfd_wait_queue *uwq;  in userfaultfd_ctx_read()  local
1068 		uwq = find_userfault(ctx);  in userfaultfd_ctx_read()
1069 		if (uwq) {  in userfaultfd_ctx_read()
1100 			list_del(&uwq->wq.entry);  in userfaultfd_ctx_read()
1101 			add_wait_queue(&ctx->fault_wqh, &uwq->wq);  in userfaultfd_ctx_read()
1106 			*msg = uwq->msg;  in userfaultfd_ctx_read()
1114 		uwq = find_userfault_evt(ctx);  in userfaultfd_ctx_read()
1115 		if (uwq) {  in userfaultfd_ctx_read()
1116 			*msg = uwq->msg;  in userfaultfd_ctx_read()
1118 			if (uwq->msg.event == UFFD_EVENT_FORK) {  in userfaultfd_ctx_read()
1121 					uwq->msg.arg.reserved.reserved1;  in userfaultfd_ctx_read()
1122 				list_move(&uwq->wq.entry, &fork_event);  in userfaultfd_ctx_read()
1134 			userfaultfd_event_complete(ctx, uwq);  in userfaultfd_ctx_read()
1167 			uwq = list_first_entry(&fork_event,  in userfaultfd_ctx_read()
1168 					       typeof(*uwq),  in userfaultfd_ctx_read()
1180 			list_del(&uwq->wq.entry);  in userfaultfd_ctx_read()
1181 			__add_wait_queue(&ctx->event_wqh, &uwq->wq);  in userfaultfd_ctx_read()
1189 				userfaultfd_event_complete(ctx, uwq);  in userfaultfd_ctx_read()