Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns

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Hello, Serge.

On Thu, Nov 26, 2015 at 11:17:45PM -0600, Serge E. Hallyn wrote:
> > Wouldn't it be simpler to walk dentry from kernfs root than
> > duplicating dentry instantiation?
> 
> Sorry I don't think I'm following.  Are you suggesting walking the
> kn->parent chain backward and doing d_lookup() at each point starting
> with sb->s_root?

Yeah, something like that.  I wonder whether there are already code
paths doing that.  What we need is a straight path walk.  I could be
wrong but it shouldn't be that complex and if it works out we can
avoid introducing another instantiation / lookup path.

Thanks.

-- 
tejun
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