User namespace feature freeze lifted

[Serge Hallyn]

Quoting Eric W. Biederman (ebiederm at xmission.com):
> 
> As of v4.3-rc1 all of the security issues I am aware of with the user
> namespace have been addressed.  If someone knows of something I have
> overlooked please let me know.
> 
> As much as humanly possible I want to avoid security bugs in the future
> so I will endeavour to ensure any future user namespace patches receive
> a close review.
> 
> As for merging features I expect I will likley start with Seth's code
> for associating superblock with user namespaces, and then move on to
> Lukasz's code for figuring out how to add namespace for smack.

Should there be a User Namespace maintainer?