[RESEND][PATCH] userns: use marco instead of magic number for max userns level

[Chen, Hanxiao]

> -----Original Message-----
> From: Aristeu Rozanski [mailto:aris at redhat.com]
> 
> On Thu, Sep 11, 2014 at 05:51:31PM +0800, Chen Hanxiao wrote:
> > Use marco instead of magic number
> > for max user namespace level.
> 
> patch is ok, but you might want to do s/marco/macro/
> 
Sorry for that typo..
Do I need to resend it?

Thanks,
- Chen