On Fri, Jul 11, 2014 at 02:35:48PM -0400, Naoya Horiguchi wrote:
> From: "Kirill A. Shutemov" <kirill.shute...@linux.intel.com>
>
> Currently pagewalker splits all THP pages on any clear_refs request. It's
> not necessary. We can handle this on PMD level.
>
> One side effect is that soft dirty will potentially see more dirty memory,
> since we will mark whole THP page dirty at once.
>
> Sanity checked with CRIU test suite. More testing is required.
>
> ChangeLog:
> - move code for thp to clear_refs_pte_range()
>
> Signed-off-by: Kirill A. Shutemov <kirill.shute...@linux.intel.com>
> Cc: Pavel Emelyanov <xe...@parallels.com>
> Cc: Andrea Arcangeli <aarca...@redhat.com>
> Cc: Dave Hansen <dave.han...@intel.com>
> Signed-off-by: Naoya Horiguchi <n-horigu...@ah.jp.nec.com>
> Cc: Cyrill Gorcunov <gorcu...@gmail.com>
> Signed-off-by: Andrew Morton <a...@linux-foundation.org>
Reviewed-by: Cyrill Gorcunov <gorcu...@openvz.org>
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