Messages in this thread | | | Date | Sat, 7 Jul 2012 23:35:36 -0700 | From | Tejun Heo <> | Subject | Re: [PATCH] cgroup: fix dentry still in use bug when dropping css refs after umount |
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Hello, Li.
On Wed, Jul 04, 2012 at 02:19:15PM +0800, Li Zefan wrote: > > I think we're horridly broken for > > root cgroup tho - and it has been broken for very long time. I think > > it's mostly hidden because most (all?) controllers short-circuit root > > cgroup. Eh, well.... > > > > Could you elaborate a bit on what's broken for root cgroup?
If someone holds css ref of a root cgroup, AFAICS nothing is preventing the cgroup hierarchy from being unmounted and root cgroup destroyed.
Thanks.
-- tejun
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