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Re: [PATCH v3 06/13] memcg: kmem controller infrastructure [message #48157 is a reply to message #48141]

Mon, 01 October 2012 09:44

Michal Hocko
Messages: 109
Registered: December 2011

Senior Member

On Sun 30-09-12 17:25:42, Tejun Heo wrote:
> On Fri, Sep 28, 2012 at 03:34:19PM +0400, Glauber Costa wrote:
> > On 09/27/2012 05:44 PM, Michal Hocko wrote:
> > > Anyway, I have just noticed that __mem_cgroup_try_charge does
> > > VM_BUG_ON(css_is_removed(&memcg->css)) on a given memcg so you should
> > > keep css ref count up as well.
> >
> > IIRC, css_get will prevent the cgroup directory from being removed.
> > Because some allocations are expected to outlive the cgroup, we
> > specifically don't want that.
>
> That synchronous ref draining is going away. Maybe we can do that
> before kmemcg? Michal, do you have some timeframe on mind?

It is on my todo list but I didn't get to it yet. I am not sure we can
get rid of css_get though - will have to think about that.

>
> Thanks.
>
> --
> tejun

--
Michal Hocko
SUSE Labs

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[Message index]

		[PATCH v3 00/13] kmem controller for memcg. By: Glauber Costa on Tue, 18 September 2012 14:03
		[PATCH v3 03/13] memcg: change defines to an enum By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 03/13] memcg: change defines to an enum By: Johannes Weiner on Mon, 01 October 2012 19:06
		Re: [PATCH v3 03/13] memcg: change defines to an enum By: Glauber Costa on Tue, 02 October 2012 09:10
		[PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Tejun Heo on Fri, 21 September 2012 17:23
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Mon, 24 September 2012 08:48
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Michal Hocko on Mon, 01 October 2012 13:27
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Thu, 04 October 2012 10:53
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Thu, 04 October 2012 14:20
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Johannes Weiner on Fri, 05 October 2012 15:31
		Re: [PATCH v3 12/13] execute the whole memcg freeing in rcu callback By: Glauber Costa on Mon, 08 October 2012 09:45
		[PATCH v3 01/13] memcg: Make it possible to use the stock for more than one page. By: Glauber Costa on Tue, 18 September 2012 14:03
		Re: [PATCH v3 01/13] memcg: Make it possible to use the stock for more than one page. By: Johannes Weiner on Mon, 01 October 2012 18:48
		[PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Mel Gorman on Thu, 27 September 2012 13:50
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Fri, 28 September 2012 09:43
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Mel Gorman on Fri, 28 September 2012 13:28
		Re: [PATCH v3 07/13] mm: Allocate kernel pages to the right memcg By: Michal Hocko on Thu, 27 September 2012 13:52
		[PATCH v3 10/13] memcg: use static branches when code not in use By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 10/13] memcg: use static branches when code not in use By: Michal Hocko on Mon, 01 October 2012 12:25
		Re: [PATCH v3 10/13] memcg: use static branches when code not in use By: Glauber Costa on Mon, 01 October 2012 12:27
		[PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 21 September 2012 08:41
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: JoonSoo Kim on Fri, 21 September 2012 09:14
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: JoonSoo Kim on Thu, 20 September 2012 16:05
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Wed, 26 September 2012 15:51
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Thu, 27 September 2012 11:31
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Thu, 27 September 2012 13:44
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 28 September 2012 11:34
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Tejun Heo on Sun, 30 September 2012 08:25
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 08:28
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Tejun Heo on Wed, 03 October 2012 22:11
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 09:44
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 09:48
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 10:09
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 11:51
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 11:51
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 01 October 2012 11:58
		Re: [PATCH v3 06/13] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 01 October 2012 12:04
		[PATCH v3 11/13] memcg: allow a memcg with kmem charges to be destructed. By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 11/13] memcg: allow a memcg with kmem charges to be destructed. By: Michal Hocko on Mon, 01 October 2012 12:30
		[PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Michal Hocko on Mon, 01 October 2012 12:15
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Glauber Costa on Mon, 01 October 2012 12:29
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Michal Hocko on Mon, 01 October 2012 12:36
		Re: [PATCH v3 09/13] memcg: kmem accounting lifecycle management By: Glauber Costa on Mon, 01 October 2012 12:43
		[PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Rik van Riel on Tue, 18 September 2012 14:15
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Christoph Lameter on Tue, 18 September 2012 15:06
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Glauber Costa on Wed, 19 September 2012 07:39
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Christoph Lameter on Wed, 19 September 2012 14:07
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Mel Gorman on Thu, 27 September 2012 13:34
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Glauber Costa on Thu, 27 September 2012 13:41
		Re: [PATCH v3 05/13] Add a __GFP_KMEMCG flag By: Johannes Weiner on Mon, 01 October 2012 19:09
		[PATCH v3 13/13] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: Glauber Costa on Tue, 18 September 2012 14:04
		Re: [PATCH v3 13/13] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: Michal Hocko on Mon, 01 October 2012 13:17

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