From: Sage Weil <sage@inktank.com>
Date: Mon, 25 Mar 2013 15:47:40 +0000 (-0700)
Subject: libceph: implement RECONNECT_SEQ feature
X-Git-Tag: omap-for-v3.10/dt-fixes-for-merge-window~26^2~187
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3a23083bda56850a1dc0e1c6d270b1f5dc789f07;p=pandora-kernel.git

libceph: implement RECONNECT_SEQ feature

This is an old protocol extension that allows the client and server to
avoid resending old messages after a reconnect (following a socket error).
Instead, the exchange their sequence numbers during the handshake.  This
avoids sending a bunch of useless data over the socket.

It has been supported in the server code since v0.22 (Sep 2010).

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
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