On Mon, Feb 1, 2010 at 12:35 PM, Jon Masters <jonathan@xxxxxxxxxxxxxx> wrote:
> On Mon, 2010-02-01 at 11:36 +0200, Alexey Dobriyan wrote:
>> On Mon, Feb 1, 2010 at 11:32 AM, Jon Masters <jonathan@xxxxxxxxxxxxxx> wrote:
>> > I hacked up a per-namespace version of hashtables (this needs doing
>> > anyway, since the global stuff is just waiting to break)
>>
>> Which ones? Conntrack hashtables are per-netns.
>
> They are, but the metadata is not. Sorry for not being clear, but my
> previous mail was. i.e. there is a per-netns hashtable that is indexed
> using a global that might change at any time underneath. The htable size
> and max should be per-netns too.
So, insert printk into nf_conntrack_set_hashsize().
> An existing sysctl/module parameter affects these and should also
> ultimately either iterate through namespaces, or only affect the global
> init_net (as it almost does now, except it changes the data used by the
> others and doesn't resize them).
Those sysctls are readonly, nobody else changes hashtable size legitimately.
Alexey, hoping sysfs code for modules is not too smart.
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