Re: [PATCH 2.6.23-rc6] NETWORKING : Edge Triggered EPOLLOUT events get missed for TCP sockets

From: Nagendra Tomar <redacted>
Date: Wed, 19 Sep 2007 04:13:24 -0700 (PDT)

With the SOCK_NOSPACE check in tcp_check_space(), this epoll_wait call will 
not return, even when the incoming acks free the buffers.
        Note that this patch assumes that the SOCK_NOSPACE check in
tcp_check_space is a trivial optimization which can be safely removed.

I think the more correct fix is to fix whoever isn't
setting the SOCK_NOSPACE bit, that check really is
crucial.