The splice family of Linux system calls can transfer data between file
descriptors without the need to copy data into userspace.  Instead of a
userspace buffer, they rely on an ordinary Unix pipe as a kernel-level
buffer.

* http://bogomips.org/ruby_io_splice/
* ruby.io.splice / librelist.org
* git://bogomips.org/ruby_io_splice.git
* http://bogomips.org/ruby_io_splice/NEWS.atom.xml

Changes: cleanups and compatibility fixes

This release fixes compatibility with Ruby trunk r44955 and onwards.
There are also numerous cleanups.
Note: usage of IO::Splice::WAITALL is deprecated and will be removed
in 5.x along with IO::Splice.copy_stream.

-- 
Eric Wong