[ Upstream commit a5b3cd32ff238b87e94d47b927aff117e22d13c0 ] Wire up TIF_NOTIFY_SIGNAL handling for um. Cc: linux-um@lists.infradead.org Acked-By: Anton Ivanov <anton.ivanov@cambridgegreys.com> Signed-off-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>