Re: [PATCH v2 07/12] mm: thp: check pmd migration entry in common path

[Naoya Horiguchi]

On Thu, Nov 10, 2016 at 02:06:14PM +0530, Anshuman Khandual wrote:
> On 11/08/2016 05:01 AM, Naoya Horiguchi wrote:
> > If one of callers of page migration starts to handle thp, memory management code
> > start to see pmd migration entry, so we need to prepare for it before enabling.
> > This patch changes various code point which checks the status of given pmds in
> > order to prevent race between thp migration and the pmd-related works.
> 
> There are lot of changes in this one patch. Should not we split
> this up into multiple patches and explain them in a bit detail
> through their commit messages ?

Yes, and I admit that I might change more than necessary, if the context
never encounters migration entry for any reason, no change is needed.
I'll dig more detail.

- Naoya Horiguchi