System poller (epoll/Linux): don't restore the process' original signal mask when shutting down because it intermittently causes the parent's call to waitpid to return WIFSIGNALED instead of WIFEXITED, presumably when the restoration of the original signal mask happens earlier than usual. It is also a redundant action to take during process termination.
System poller (epoll/Linux): don't restore the process' original signal mask
when shutting down because it intermittently causes the parent's call to waitpid
to return WIFSIGNALED instead of WIFEXITED, presumably when the restoration of
the original signal mask happens earlier than usual. It is also a redundant
action to take during process termination.

francoisk/sendfiled,francoisk/sendfiled