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Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg [message #48448 is a reply to message #48404]

Wed, 17 October 2012 22:43

David Rientjes
Messages: 59
Registered: November 2006

Member

On Tue, 16 Oct 2012, Glauber Costa 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. This is done by the invocation of
> __free_accounted_pages() and free_accounted_pages().
>
> [ v2: inverted test order to avoid a memcg_get leak,
> free_accounted_pages simplification ]
> [ v4: test for TIF_MEMDIE at newpage_charge ]
>
> Signed-off-by: Glauber Costa <glommer@parallels.com>
> Acked-by: Michal Hocko <mhocko@suse.cz>
> Acked-by: Mel Gorman <mgorman@suse.de>
> Acked-by: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
> CC: Christoph Lameter <cl@linux.com>
> CC: Pekka Enberg <penberg@cs.helsinki.fi>
> CC: Johannes Weiner <hannes@cmpxchg.org>
> CC: Suleiman Souhlal <suleiman@google.com>
> CC: Tejun Heo <tj@kernel.org>

Acked-by: David Rientjes <rientjes@google.com>

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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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