+ mm-migrate_device-use-a-newfolio-in-__migrate_device_pages.patch added to mm-unstable branch

[Andrew Morton <akpm@linux-foundation.org>]

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The patch titled
     Subject: mm: migrate_device: use a newfolio in __migrate_device_pages()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-migrate_device-use-a-newfolio-in-__migrate_device_pages.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-migrate_device-use-a-newfolio-in-__migrate_device_pages.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@huawei.com>
Subject: mm: migrate_device: use a newfolio in __migrate_device_pages()
Date: Fri, 24 May 2024 13:28:40 +0800

Use a newfolio instead of newpage and convert to more folio api in
__migrate_device_pages().

Link: https://lkml.kernel.org/r/20240524052843.182275-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Miaohe Lin <linmiaohe@huawei.com>
Cc: Alistair Popple <apopple@nvidia.com>
Cc: Benjamin LaHaise <bcrl@kvack.org>
Cc: David Hildenbrand <david@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jiaqi Yan <jiaqiyan@google.com>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Naoya Horiguchi <nao.horiguchi@gmail.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/migrate_device.c |   17 +++++++++--------
 1 file changed, 9 insertions(+), 8 deletions(-)

--- a/mm/migrate_device.c~mm-migrate_device-use-a-newfolio-in-__migrate_device_pages
+++ a/mm/migrate_device.c
@@ -692,7 +692,7 @@ static void __migrate_device_pages(unsig
 		struct page *newpage = migrate_pfn_to_page(dst_pfns[i]);
 		struct page *page = migrate_pfn_to_page(src_pfns[i]);
 		struct address_space *mapping;
-		struct folio *folio;
+		struct folio *newfolio, *folio;
 		int r;
 
 		if (!newpage) {
@@ -727,11 +727,12 @@ static void __migrate_device_pages(unsig
 			continue;
 		}
 
+		newfolio = page_folio(newpage);
 		folio = page_folio(page);
 		mapping = folio_mapping(folio);
 
-		if (is_device_private_page(newpage) ||
-		    is_device_coherent_page(newpage)) {
+		if (folio_is_device_private(newfolio) ||
+		    folio_is_device_coherent(newfolio)) {
 			if (mapping) {
 				/*
 				 * For now only support anonymous memory migrating to
@@ -745,7 +746,7 @@ static void __migrate_device_pages(unsig
 					continue;
 				}
 			}
-		} else if (is_zone_device_page(newpage)) {
+		} else if (folio_is_zone_device(newfolio)) {
 			/*
 			 * Other types of ZONE_DEVICE page are not supported.
 			 */
@@ -754,11 +755,11 @@ static void __migrate_device_pages(unsig
 		}
 
 		if (migrate && migrate->fault_page == page)
-			r = migrate_folio_extra(mapping, page_folio(newpage),
-						folio, MIGRATE_SYNC_NO_COPY, 1);
+			r = migrate_folio_extra(mapping, newfolio, folio,
+						MIGRATE_SYNC_NO_COPY, 1);
 		else
-			r = migrate_folio(mapping, page_folio(newpage),
-					folio, MIGRATE_SYNC_NO_COPY);
+			r = migrate_folio(mapping, newfolio, folio,
+					  MIGRATE_SYNC_NO_COPY);
 		if (r != MIGRATEPAGE_SUCCESS)
 			src_pfns[i] &= ~MIGRATE_PFN_MIGRATE;
 	}
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com are

mm-add-folio_alloc_mpol.patch
mm-mempolicy-use-folio_alloc_mpol_noprof-in-vma_alloc_folio_noprof.patch
mm-mempolicy-use-folio_alloc_mpol-in-alloc_migration_target_by_mpol.patch
mm-shmem-use-folio_alloc_mpol-in-shmem_alloc_folio.patch
mm-refactor-folio_undo_large_rmappable.patch
mm-memcontrol-remove-page_memcg.patch
rmap-remove-define_page_vma_walk.patch
mm-migrate-simplify-__buffer_migrate_folio.patch
mm-migrate_device-use-a-newfolio-in-__migrate_device_pages.patch
mm-migrate_device-unify-migrate-folio-for-migrate_sync_no_copy.patch
mm-migrate-remove-migrate_folio_extra.patch
mm-remove-migrate_sync_no_copy-mode.patch