Invalid proc.memory.vmhwn metric

[Marko Myllynen <myllynen@xxxxxxxxxx>]

Hi,

>From http://man7.org/linux/man-pages/man5/proc.5.html:

  * VmHWM: Peak resident set size ("high water mark").

There's no proc.memory.vmhwm available as one would expect but
proc.memory.vmhwn - and it turns out that the same typo is present
everywhere in PCP sources so the value will always be zero.

How should this be corrected? I could have sent a simple patch changing
hwn->hwm everywhere but are there any backward compatibility
restrictions that should be taken into account?

Thanks,

-- 
Marko Myllynen