[Devel] Re: [RFC][PATCH] memory cgroup enhancements updated [8/10] add pre_destroy handler

[KAMEZAWA Hiroyuki]

On Wed, 24 Oct 2007 20:19:34 +0530
Balbir Singh <balbir at linux.vnet.ibm.com> wrote:

> > +	/*
> > +	 * Notify subsyses that rmdir() request comes.
> > +	 */
> > +	for_each_subsys(root, ss) {
> > +		if ((cont->subsys[ss->subsys_id]) && ss->pre_destroy)
> > +			ss->pre_destroy(ss, cont);
> > +	}
> > 
> 
> Is pre_destroy really required? Can't we do what we do here in destroy?
>

I think keeping "we can destroy cgroup only when refcnt=0" semantics is better.

Thanks,
-Kame
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