Re: [PATCHv4 05/39] memcg, thp: charge huge cache pages

From: Dave Hansen
Date: Tue May 21 2013 - 15:05:01 EST

On 05/11/2013 06:23 PM, Kirill A. Shutemov wrote:
> From: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
> mem_cgroup_cache_charge() has check for PageCompound(). The check
> prevents charging huge cache pages.
> I don't see a reason why the check is present. Looks like it's just
> legacy (introduced in 52d4b9a memcg: allocate all page_cgroup at boot).

FWIW, that commit introduced two PageCompound() checks. The other one
went away inexplicably in 01b1ae63c22.

Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
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