From: lkml@pengaru.com
Date: Sat, 20 Sep 2008 16:42:29 -0500

quoted text
> I have a need for select/poll/epoll_wait to block on sockets which have
> unread data sitting in the receive buffer with a quantity less than
> specified via setsockopt() w/SO_RCVLOWAT, not less than one like the
> current implementation.

If BSD never provided this behavior, such a change is likely
to break applications.
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