Network device and namespace checkpoint/restart (v2)

[Oren Laadan]

Hi,

This is cool.
I commented on patch 2.
The others (1,3,4) look good to me.

Oren.


Dan Smith wrote:
> This patch set adds checkpoint/restart support for network namespaces,
> as well as the network devices within.  Currently supports veth and loopback
> device types.
> 
> Major changes from last time[1] are:
> 
>  - Add a per-device ndo_checkpoint() operation which simultaneously
>    isolates the checkpoint layer from the network device's checkpoint
>    function and internal data, and also provides a better way to
>    determine checkpointability of a given interface.
>  - Use RTNL to create the veth pair as userspace would, to avoid the
>    need to call directly into RTNL and veth internals
> 
> With this set, I'm able to checkpoint and restart a running sendmail
> instance that is inside a private network namespace with a veth tunnel
> to the outside world.  Applies on top of -rc3 with my other two patches
> from earlier today.
> 
> 1: https://lists.linux-foundation.org/pipermail/containers/2010-January/022549.html
> 
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