[Devel] Re: [RFC][-mm PATCH 3/8] Memory controller accounting setup (v3)

[Paul Menage]

On 7/20/07, Paul Menage <menage at google.com> wrote:
> On 7/20/07, Balbir Singh <balbir at linux.vnet.ibm.com> wrote:
> > +       mem = mem_container_from_cont(task_container(p,
> > +                                       mem_container_subsys_id));
> > +       css_get(&mem->css);
>
> The container framework won't try to free a subsystem's root container
> state, so this isn't needed.

Sorry, this was a reply to the wrong patch hunk.

The css_get() in mem_container_create() is the unnecessary one.

Also, rather than doing something like:

mem_container_from_cont(task_container(p, mem_container_subsys_id))

you'd be better off defining a similar wrapper to
mem_container_from_cont() called mem_container_from_task() that uses
task_subsys_state() rather than container_subsys_state() - you'll save
a few indirections.

Paul
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