Messages in this thread | | | Date | Thu, 18 Oct 2012 13:44:57 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v5 07/14] mm: Allocate kernel pages to the right memcg |
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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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