io_uring: imply MSG_NOSIGNAL for send[msg]()/recv[msg]() calls

We never want to generate any SIGPIPE, -EPIPE only is much better.

Signed-off-by: Stefan Metzmacher <metze@samba.org>
Link: https://lore.kernel.org/r/38961085c3ec49fd21550c7788f214d1ff02d2d4.1615908477.git.metze@samba.org


Signed-off-by: Jens Axboe <axboe@kernel.dk>