Messages in this thread | | | Date | Thu, 14 Nov 2019 11:20:18 -0800 | From | Tejun Heo <> | Subject | Re: [PATCH 1/2] mm: memcg: switch to css_tryget() in get_mem_cgroup_from_mm() |
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Hello,
On Thu, Nov 14, 2019 at 08:16:57PM +0100, Michal Hocko wrote: > Then what is the point of this function and what about all other users?
It is useful for controlling admissions of new userspace visible uses - e.g. a tracepoint shouldn't be allowed to be attached to a cgroup which has already been deleted. We're just using it too liberally.
Thanks.
-- tejun
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