From: Ernie Petrides <petrides@redhat.com>

The problem resolved by this patch is that if a root file system has an
error recorded from a previous mount, and then (when rebooting) the orphan
recovery procedure is initiated, the recovery is correctly skipped but the
file system is incorrectly left in a writable state.

This causes the subsequent fsck to fail due to the root file system
being dirty, and then requires manual intervention to get the system
fully booted.