Re: [PATCH] memcg: update documentation v5

[Balbir Singh]

* Vivek Goyal <vgoyal@xxxxxxxxxx> [2010-04-13 10:03:02]:

> On Tue, Apr 13, 2010 at 09:57:18AM -0400, Vivek Goyal wrote:
> > On Tue, Apr 13, 2010 at 01:45:53PM +0900, KAMEZAWA Hiroyuki wrote:
> > 
> 
> Typed wrong email id last time and mail bounced. So here is another
> attempt.
> 
> > [..]
> > > -2. Locking
> > > +2.6 Locking
> > >  
> > > -The memory controller uses the following hierarchy
> > > +   lock_page_cgroup()/unlock_page_cgroup() should not be called under
> > > +   mapping->tree_lock.
> > >  
> > 
> > Because I never understood very well, I will ask. Why lock_page_cgroup()
> > should not be called under mapping->tree_lock?
> > 

The closest reference I can find to a conversation regarding this is

http://linux.derkeiler.com/Mailing-Lists/Kernel/2009-05/msg05158.html

-- 
	Three Cheers,
	Balbir
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