From 2074abfeb8ea2904aeeaecc45e0dfea3f83a22b2 Mon Sep 17 00:00:00 2001
From: Stephen Hemminger <shemminger@vyatta.com>
Date: Mon, 16 Nov 2009 16:04:49 -0800
Subject: [PATCH] ext2: clear uptodate flag on super block I/O error

This fixes a WARN backtrace in mark_buffer_dirty() that occurs during
unmount when a USB or floppy device is removed. I reported this a kernel
regression, but looks like it might have been there for longer
than that.

The super block update from a previous operation has marked the buffer
as in error, and the flag has to be cleared before doing the update.
(Similar code already exists in ext4).

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: Jan Kara <jack@suse.cz>
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