Comment 5 for bug 1091480

Reviewed: https://review.openstack.org/23077
Committed: http://github.com/openstack/cinder/commit/3cff1cb24f7627dd913ce02a0f62c7ef85b5c37c
Submitter: Jenkins
Branch: master

commit 3cff1cb24f7627dd913ce02a0f62c7ef85b5c37c
Author: Rushi Agrawal <email address hidden>
Date: Wed Feb 27 06:37:41 2013 -0500

    NetApp: Fix race condition in 7-mode iSCSI driver with DFM.

    A race condition was discovered in the driver while creating
    or deleting multiple volumes in a very short interval of time
    (can be reproduced by making successive API calls to Cinder).
    This fix decorates the methods responsible for race condition
    with a synchronized() decorator. The problem was with the
    management software: DFM, and in principle, there should not
    be two processes trying to modify the DFM dataset object at
    the same time. This patch prevents from such a possibility.

    Fixes bug 1091480

    Change-Id: I11cfc8868171acec356f4140aba52b8078d109df