Re: [PATCH 1/8] Scaling msgmni to the amount of lowmem

From: Serge E. Hallyn
Date: Tue May 06 2008 - 14:05:44 EST


Quoting Luck, Tony (tony.luck@xxxxxxxxx):
> > Well, this printk had been suggested by somebody (sorry I don't remember
> > who) when I first submitted the patch. Actually I think it might be
> > useful for a sysadmin to be aware of a change in the msgmni value: we
> > have the message not only at boot time, but also each time msgmni is
> > recomputed because of a change in the amount of memory.
>
> If the message is directed at the system administrator, then it would
> be nice if there were some more meaningful way to show the namespace
> that is affected than just printing the hex address of the kernel structure.
>
> As the sysadmin for my test systems, printing the hex address is mildly
> annoying ... I now have to add a new case to my scripts that look at
> dmesg output for unusual activity.
>
> Is there some better "name for a namespace" than the address? Perhaps
> the process id of the process that instantiated the namespace???

I agree with Tony here. Aside from the nuisance it is to see that
message on console every time I unshare a namespace, a printk doesn't
seem like the right way to output the info. At most I'd say an audit
message.

-serge
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