explain_signalfd_or_die(3) on Linux
The text eaf5e4c1cd88, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it. The page shows this text now.
create signalable file descriptor and report errors