upper_first       712 kernel/user_namespace.c 	u32 upper_first, lower_first, upper_last, lower_last;
upper_first       715 kernel/user_namespace.c 	upper_first = extent->first;
upper_first       717 kernel/user_namespace.c 	upper_last = upper_first + extent->count - 1;
upper_first       737 kernel/user_namespace.c 		    (prev_upper_last >= upper_first))