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Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg [message #48501 is a reply to message #48463]

Thu, 18 October 2012 20:44

akpm
Messages: 224
Registered: March 2007

Senior Member

On Thu, 18 Oct 2012 13:24:47 +0400
Glauber Costa <glommer@parallels.com> wrote:

> On 10/18/2012 02:12 AM, Andrew Morton wrote:
> > On Tue, 16 Oct 2012 14:16:44 +0400
> > Glauber Costa <glommer@parallels.com> wrote:
> >
> >> When a process tries to allocate a page with the __GFP_KMEMCG flag, the
> >> page allocator will call the corresponding memcg functions to validate
> >> the allocation. Tasks in the root memcg can always proceed.
> >>
> >> To avoid adding markers to the page - and a kmem flag that would
> >> necessarily follow, as much as doing page_cgroup lookups for no reason,
> >> whoever is marking its allocations with __GFP_KMEMCG flag is responsible
> >> for telling the page allocator that this is such an allocation at
> >> free_pages() time.
> >
> > Well, why? Was that the correct decision?
> >
>
> I don't fully understand your question. Is this the same question you
> posed in patch 0, about marking some versus marking all? If so, I
> believe I should have answered it there.

Yes, it's the same question. The one which has not yet been fully answered ;)

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[Message index]

		[PATCH v5 00/14] kmem controller for memcg. By: Glauber Costa on Tue, 16 October 2012 10:16
		[PATCH v5 03/14] memcg: change defines to an enum By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 03/14] memcg: change defines to an enum By: David Rientjes on Wed, 17 October 2012 21:50
		[PATCH v5 01/14] memcg: Make it possible to use the stock for more than one page. By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 01/14] memcg: Make it possible to use the stock for more than one page. By: akpm on Wed, 17 October 2012 22:11
		Re: [PATCH v5 01/14] memcg: Make it possible to use the stock for more than one page. By: Glauber Costa on Thu, 18 October 2012 08:55
		[PATCH v5 04/14] kmem accounting basic infrastructure By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: Michal Hocko on Tue, 16 October 2012 12:14
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: David Rientjes on Wed, 17 October 2012 22:08
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: Glauber Costa on Thu, 18 October 2012 09:02
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: Tejun Heo on Thu, 18 October 2012 19:47
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: Tejun Heo on Thu, 18 October 2012 19:37
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: akpm on Wed, 17 October 2012 22:12
		Re: [PATCH v5 04/14] kmem accounting basic infrastructure By: Glauber Costa on Thu, 18 October 2012 09:04
		[PATCH v5 11/14] memcg: allow a memcg with kmem charges to be destructed. By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 11/14] memcg: allow a memcg with kmem charges to be destructed. By: akpm on Wed, 17 October 2012 22:12
		Re: [PATCH v5 11/14] memcg: allow a memcg with kmem charges to be destructed. By: Glauber Costa on Thu, 18 October 2012 09:33
		[PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: KAMEZAWA Hiroyuki on Wed, 17 October 2012 06:40
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: akpm on Wed, 17 October 2012 22:12
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Thu, 18 October 2012 09:16
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: David Rientjes on Thu, 18 October 2012 22:06
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 19 October 2012 09:10
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: David Rientjes on Fri, 19 October 2012 09:31
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 19 October 2012 10:00
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: David Rientjes on Wed, 17 October 2012 22:37
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Thu, 18 October 2012 09:23
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: David Rientjes on Thu, 18 October 2012 21:59
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Fri, 19 October 2012 10:08
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: David Rientjes on Fri, 19 October 2012 20:34
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 22 October 2012 12:34
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Michal Hocko on Mon, 22 October 2012 12:51
		Re: [PATCH v5 06/14] memcg: kmem controller infrastructure By: Glauber Costa on Mon, 22 October 2012 12:52
		[PATCH v5 05/14] Add a __GFP_KMEMCG flag By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 05/14] Add a __GFP_KMEMCG flag By: Michal Hocko on Tue, 16 October 2012 12:15
		Re: [PATCH v5 05/14] Add a __GFP_KMEMCG flag By: David Rientjes on Wed, 17 October 2012 22:09
		[PATCH v5 09/14] memcg: kmem accounting lifecycle management By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 09/14] memcg: kmem accounting lifecycle management By: David Rientjes on Wed, 17 October 2012 23:28
		Re: [PATCH v5 09/14] memcg: kmem accounting lifecycle management By: Michal Hocko on Thu, 18 October 2012 06:14
		Re: [PATCH v5 09/14] memcg: kmem accounting lifecycle management By: Glauber Costa on Thu, 18 October 2012 09:42
		[PATCH v5 10/14] memcg: use static branches when code not in use By: Glauber Costa on Tue, 16 October 2012 10:16
		[PATCH v5 14/14] Add documentation about the kmem controller By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 14/14] Add documentation about the kmem controller By: Michal Hocko on Tue, 16 October 2012 12:23
		Re: [PATCH v5 14/14] Add documentation about the kmem controller By: Christoph Lameter on Tue, 16 October 2012 18:25
		Re: [PATCH v5 14/14] Add documentation about the kmem controller By: Glauber Costa on Tue, 16 October 2012 19:02
		Re: [PATCH v5 14/14] Add documentation about the kmem controller By: Christoph Lameter on Tue, 16 October 2012 19:30
		Re: [PATCH v5 14/14] Add documentation about the kmem controller By: akpm on Wed, 17 October 2012 22:12
		Re: [PATCH v5 14/14] Add documentation about the kmem controller By: Glauber Costa on Thu, 18 October 2012 09:38
		[PATCH v5 13/14] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 13/14] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: akpm on Wed, 17 October 2012 22:12
		Re: [PATCH v5 13/14] protect architectures where THREAD_SIZE >= PAGE_SIZE against fork bombs By: Glauber Costa on Thu, 18 October 2012 09:37
		[PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Tue, 16 October 2012 10:16
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: Christoph Lameter on Tue, 16 October 2012 15:31
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Tue, 16 October 2012 18:55
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: akpm on Wed, 17 October 2012 22:12
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Thu, 18 October 2012 09:24
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: akpm on Thu, 18 October 2012 20:44
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: Glauber Costa on Thu, 18 October 2012 11:53
		Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg By: David Rientjes on Wed, 17 October 2012 22:43
		Re: [PATCH v5 00/14] kmem controller for memcg. By: akpm on Wed, 17 October 2012 22:11
		Re: [PATCH v5 00/14] kmem controller for memcg. By: Glauber Costa on Thu, 18 October 2012 08:52
		Re: [PATCH v5 00/14] kmem controller for memcg. By: akpm on Thu, 18 October 2012 19:21
		Re: [PATCH v5 00/14] kmem controller for memcg. By: Glauber Costa on Fri, 19 October 2012 09:55

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