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Date:   Wed, 27 May 2020 10:35:36 -0700
To:     Jakub Sitnicki <>
Subject: Re: [PATCH bpf-next 1/8] flow_dissector: Don't grab update-side lock
 on prog detach from pre_exit

On 05/27, Jakub Sitnicki wrote:
> When there are no references to struct net left, that is check_net(net) is
> false, we don't need to synchronize updates to flow_dissector prog with  
> prog attach/detach callbacks. That allows us to pull locking up from the
> shared detach routine and into the bpf prog detach callback.

> Signed-off-by: Jakub Sitnicki <>
Reviewed-by: Stanislav Fomichev <>

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