| Date | Fri, 5 Apr 2013 14:19:40 +0400 | From | Glauber Costa <> | Subject | Re: [RFC][PATCH 3/7] memcg: use css_get/put when charging/uncharging kmem |
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On 04/03/2013 01:12 PM, Li Zefan wrote: > Use css_get/put instead of mem_cgroup_get/put. > > We can't do a simple replacement, because here mem_cgroup_put() > is called during mem_cgroup_css_free(), while mem_cgroup_css_free() > won't be called until css refcnt goes down to 0. > > Instead we increment css refcnt in mem_cgroup_css_offline(), and > then check if there's still kmem charges. If not, css refcnt will > be decremented, otherwise the refcnt will be decremented when > kmem charges goes down to 0.
That is okay, it should work.
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