[libvirt] [PATCH] nwfilter: serialize execution of scripts with ebtables cmds

[Eric Blake]

On 08/13/2010 12:35 PM, Stefan Berger wrote:
>  While testing the SIGHUP handling and reloading of the nwfilter driver,
> I found that when the filters are rebuilt and mutlipe threads handled
> the individual interfaces, concurrently running multiple external bash
> scripts causes strange failures even though the executed ebtables
> commands are working on different tables for different interfaces. I
> cannot say for sure where the concurrency problems are caused, but
> introducing this lock definitely helps.
> 
> Signed-off-by: Stefan Berger <stefanb at us.ibm.com>

ACK.

-- 
Eric Blake   eblake at redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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