[Devel] Re: [RFC 1/5] user namespaces: Add a user_namespace as creator/owner of uts_namespace

Eric W. Biederman ebiederm at xmission.com
Fri Dec 17 12:40:11 PST 2010


Greg KH <greg at kroah.com> writes:

>> There are also major benefits to have the version of something that is
>> never freed never going away, because it means you can just reference it
>> in code.  So while I would be happy to say this is special don't use a
>> kref and roll the reference counting logic by hand, we aren't
>> dynamically allocating init_uts_ns any time soon.
>
> Why have a reference count at all if it's not needed or used here?

We have to reference count every other uts namespace.

Eric
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