From bcbfce8abd5f8d3f84eab60a9df1ec147f81c34f Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Tue, 22 Apr 2008 13:26:47 -0400
Subject: [PATCH] Btrfs: Fix the unplug_io_fn to grab a consistent copy of
 page->mapping

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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Reading git-format-patch failed