Alexey Dobriyan wrote:
Heh, last minute proof-reading of this patch made me think,
that this is actually unneeded, simply because "ct" pointers will be
different for different conntracks in different netns, just like they
are different in one netns.
Not so sure anymore.
Its necessary because the cache needs to be flushed on netns exit
and this is only allowed while its not in use anymore.
I don't see anything in this series actually making sure nothing
hits the cache on exit though. Am I missing something?
Additionally (I might have missed a following patch moving it
out though) this doesn't belong in the netns exit path:
void nf_conntrack_cleanup(struct net *net)
{
rcu_assign_pointer(ip_ct_attach, NULL);
...
rcu_assign_pointer(nf_ct_destroy, NULL);
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