Re: [PATCH] /dev/epoll update ...

[Alan Cox]

> Stevens [UNPV1, in chapter on nonblocking accept] suggests that readiness
> notifications from the OS should only be considered hints, and that user
> programs should behave properly even if the OS feeds it false readiness
> events.  

For accept this is specifically and definitely true. A pending connection
can go away before you accept it. What happens then is rather OS specific -
BSD unix gives you a socket that has died - which can be handy and avoids
the problem but others don't all do the same