Re: [PATCH 1/6] pagemap: avoid splitting thp when reading /proc/pid/pagemap

[Hillf Danton]

Hi Naoya

On Sat, Jan 28, 2012 at 7:02 AM, Naoya Horiguchi
<n-horiguchi@xxxxxxxxxxxxx> wrote:
> Thp split is not necessary if we explicitly check whether pmds are
> mapping thps or not. This patch introduces this check and adds code
> to generate pagemap entries for pmds mapping thps, which results in
> less performance impact of pagemap on thp.
>

Could the method proposed here cover the two cases of split THP in mem cgroup?

Thanks
Hillf
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