Messages in this thread |  | | | Date | Sun, 07 Sep 2008 21:03:24 +0530 | | From | Balbir Singh <> | | Subject | Re: [PATCH][mmotm]memcg: handle null dereference of mm->owner |
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Paul Menage wrote: > On Fri, Sep 5, 2008 at 1:40 AM, KAMEZAWA Hiroyuki > <kamezawa.hiroyu@jp.fujitsu.com> wrote: >> BTW, I have a question to Balbir and Paul. (I'm sorry I missed the discussion.) >> Recently I wonder why we need MM_OWNER. >> >> - What's bad with thread's cgroup ? > > Because lots of mm operations take place in a context where we don't > have a thread pointer, and hence no cgroup. >
Right, Thanks! Allocating memory is not that big a problem (we usually know the context), while freeing memory, we can't assume that current is freeing it
-- Balbir
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