From 9a3f236d40a99ea8dca3df40d8ef67631057cad6 Mon Sep 17 00:00:00 2001
From: Steven Whitehouse <swhiteho@redhat.com>
Date: Mon, 23 Aug 2010 11:49:34 +0100
Subject: [PATCH] GFS2: Add a bug trap in allocation code

This adds a check to ensure that if we reach the block allocator
that we don't try and proceed if there is no alloc structure
hanging off the inode. This should only happen if there is a bug
in GFS2. The error return code is distinctive in order that it
will be easily spotted.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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