From 9f0ba5bd91d42706ba78f97ec638c6a821db1c5e Mon Sep 17 00:00:00 2001
From: Chris Mason <chris.mason@oracle.com>
Date: Tue, 18 Nov 2008 10:31:22 -0500
Subject: [PATCH] Btrfs: unplug all devices in the unplug call back

For larger multi-device filesystems, there was logic to limit the
number of devices unplugged to just the page that was sent to our sync_page
function.

But, the code wasn't always unplugging the right device.  Since this was
just an optimization, disable it for now.

Signed-off-by: Chris Mason <chris.mason@oracle.com>
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