Re: [PATCH v2 03/12] mm: thp: introduce separate TTU flag for thp freezing

[Anshuman Khandual]

On 11/08/2016 05:01 AM, Naoya Horiguchi wrote:
> TTU_MIGRATION is used to convert pte into migration entry until thp split
> completes. This behavior conflicts with thp migration added later patches,

Hmm, could you please explain why it conflicts with the PMD based
migration without split ? Why TTU_MIGRATION cannot be used to
freeze/hold on the PMD while it's being migrated ?