From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Teigland <teigland@redhat.com>
Date: Mon, 27 Aug 2007 11:30:34 -0500
Subject: [Cluster-devel] [GFS2] Remove ail2 list from the ai
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Message-ID: <20070827163034.GA21096@redhat.com>
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On Mon, Aug 27, 2007 at 05:00:06PM +0100, Steven Whitehouse wrote:
> >From 2a666f519dd12e8b3a82d1e16cad3114cfdd917d Mon Sep 17 00:00:00 2001
> From: Steven Whitehouse <swhiteho@redhat.com>
> Date: Mon, 27 Aug 2007 16:42:29 +0100
> Subject: [PATCH] [GFS2] Remove ail2 list from the ai
> 
> The ail2 list wasn't actually used for anything other than gathering
> buffers at the end of in-place writeback, so remove it.

cluster/doc/journaling.txt has a nice description of ail2 and what it
does:

http://sources.redhat.com/cgi-bin/cvsweb.cgi/cluster/doc/journaling.txt?rev=1.1&content-type=text/x-cvsweb-markup&cvsroot=cluster

Why is it no longer used?