Re: [net PATCH v3 3/3] net: netprio: fix cgrp create and write priomap race

[David Miller <davem@xxxxxxxxxxxxx>]

From: John Fastabend <john.r.fastabend@xxxxxxxxx>
Date: Tue, 14 Aug 2012 15:34:35 -0700

> A race exists where creating cgroups and also updating the priomap
> may result in losing a priomap update. This is because priomap
> writers are not protected by rtnl_lock.
> 
> Move priority writer into rtnl_lock()/rtnl_unlock().
> 
> CC: Neil Horman <nhorman@xxxxxxxxxxxxx>
> Reported-by: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
> Signed-off-by: John Fastabend <john.r.fastabend@xxxxxxxxx>

Applied.
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