Messages in this thread | | | Date | Tue, 1 Dec 2015 11:46:49 -0500 | From | Tejun Heo <> | Subject | Re: [PATCH 7/8] cgroup: mount cgroupns-root when inside non-init cgroupns |
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Hey, Serge.
On Mon, Nov 30, 2015 at 10:07:04PM -0600, Serge E. Hallyn wrote: > So actually the way the code is now, the first mount cannot > be done from a non-init user namespace; and kernfs_obtain_root() > is only called from non-init user namespace. So can we assume > that the root dentry will be instantiated? (or can it get > evicted?) > > If we can assume that then most of that fn can go away.
The v2 hierarchy is always mounted and non-init ns shouldn't be able to create new v1 hierarchies, so the root dentry should always be there.
Thanks.
-- tejun
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