Re: [PATCH -mm -V2] mm, pagemap: Fix soft dirty marking for PMD migration entry

[Kirill A. Shutemov]

On Thu, Oct 19, 2017 at 03:10:46PM +0000, Huang, Ying wrote:
> From: Huang Ying <ying.huang@xxxxxxxxx>
> 
> Now, when the page table is walked in the implementation of
> /proc/<pid>/pagemap, pmd_soft_dirty() is used for both the PMD huge
> page map and the PMD migration entries.  That is wrong,
> pmd_swp_soft_dirty() should be used for the PMD migration entries
> instead because the different page table entry flag is used.
> Otherwise, the soft dirty information in /proc/<pid>/pagemap may be
> wrong.
> 
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Cc: "Kirill A. Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>

As I said before, you can use my ack for this.

-- 
 Kirill A. Shutemov