Re: [rds-devel] [PATCH RFC RFC] rds: Use NETDEV_UNREGISTER in rds_tcp_dev_event() (then kill NETDEV_UNREGISTER_FINAL)

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On (03/17/18 10:15), Sowmini Varadhan wrote:
> To solve the scaling problem why not just have a well-defined 
> callback to modules when devices are quiesced, instead of 
> overloading the pernet_device registration in this obscure way?

I thought about this a bit, and maybe I missed your original point-
today we are able to do all the needed cleanup for rds-tcp when
we unload the module, even though network activity has not quiesced,
and there is no reason we cannot use the same code for netns cleanup
as well. I think this is what you were trying to ask, when you 
said "why do you need to know that loopback is down?"
I'm sorry I  missed that, I will re-examine the code and get back to
you- it should be possible to just do one registration and 
cleanup rds-state and avoid the hack of registering twice

(saw your most recent long mail- sorry- both v1 and v2 are hacks)

I'm on the road at the moment, so I'll get back to you on this.

Thanks
--Sowmini

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