From: Cong Wang <cwang@twopensource.com>
Date: Mon, 12 May 2014 22:11:20 +0000 (-0700)
Subject: rtnetlink: wait for unregistering devices in rtnl_link_unregister()
X-Git-Tag: omap-for-v3.16/fixes-against-rc1~146^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=200b916f3575bdf11609cb447661b8d5957b0bbf;p=pandora-kernel.git

rtnetlink: wait for unregistering devices in rtnl_link_unregister()

From: Cong Wang <cwang@twopensource.com>

commit 50624c934db18ab90 (net: Delay default_device_exit_batch until no
devices are unregistering) introduced rtnl_lock_unregistering() for
default_device_exit_batch(). Same race could happen we when rmmod a driver
which calls rtnl_link_unregister() as we call dev->destructor without rtnl
lock.

For long term, I think we should clean up the mess of netdev_run_todo()
and net namespce exit code.

Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed