Re: [PATCH v1 02/11] mm: migrate_device: use more folio in __migrate_device_pages()

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On 2024/4/2 23:54, Vishal Moola wrote:
On Mon, Apr 1, 2024 at 11:21 PM Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> wrote:



On 2024/4/2 2:22, Vishal Moola wrote:
On Thu, Mar 21, 2024 at 11:27:38AM +0800, Kefeng Wang wrote:

              if (!newpage) {
@@ -728,14 +729,13 @@ static void __migrate_device_pages(unsigned long *src_pfns,
                      continue;
              }

-            mapping = page_mapping(page);
+            newfolio = page_folio(newpage);

You could save another compound_head() call by passing the folio through
to migrate_vma_insert_page() and make it migrate_vma_insert_folio(),
since its already converted to use folios.

Sure, but let's do it later, we could convert more functions in
migrate_device.c to use folios, thanks for your review, do you

Makes sense to me. This patch looks fine to me:
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@xxxxxxxxx>


Thanks,

mind to help to review other patches, hope that the poison recover
from migrate folio was merged firstly.

I'll take a look at it, I'm not too familiar with how that code works just
yet.

That's great.



+            folio = page_folio(page);
+            mapping = folio_mapping(folio);






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