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Date: Fri, 15 Oct 2010 10:45:37 -0400
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Subject: =?UTF-8?B?UmU6IFs5ZmFuc10gz4Bw?=
From: Russ Cox <rsc@swtch.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
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A simpler way to add pipelining to 9P is to
define that multiple outstanding messages
with the same tag are allowed and that the
server must process and respond to messages
with a given tag in the order it receives them.
This only requires changes to servers that
are actually multithreaded.  All the tiny servers
only do one message at a time anyway.

Given that extension, you can just send
Twalk Topen Twrite Tclunk back to back
with a single tag and then process the four
replies.

This was proposed at the Spain IWP9.

Russ