+ mm-mincore-refactor-mincore_page.patch added to mm-new branch

The patch titled
     Subject: mm: mincore: refactor mincore_page()
has been added to the -mm mm-new branch.  Its filename is
     mm-mincore-refactor-mincore_page.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mincore-refactor-mincore_page.patch

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

Note, mm-new is a provisional staging ground for work-in-progress
patches, and acceptance into mm-new is a notification for others take
notice and to finish up reviews.  Please do not hesitate to respond to
review feedback and post updated versions to replace or incrementally
fixup patches in mm-new.

The mm-new branch of mm.git is not included in linux-next

If a few days of testing in mm-new is successful, the patch will me moved
into mm.git's mm-unstable branch, which is included in linux-next

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------------------------------------------------------
From: Kefeng Wang <[email protected]>
Subject: mm: mincore: refactor mincore_page()
Date: Fri, 17 Jul 2026 17:13:47 +0800

Use early returns to reduce indentation and improve readability.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Kefeng Wang <[email protected]>
Acked-by: David Hildenbrand (Arm) <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Liam R. Howlett <[email protected]>
Cc: Lorenzo Stoakes <[email protected]>
Cc: Pedro Falcato <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Zi Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 mm/mincore.c |   21 ++++++++++-----------
 1 file changed, 10 insertions(+), 11 deletions(-)

--- a/mm/mincore.c~mm-mincore-refactor-mincore_page
+++ a/mm/mincore.c
@@ -94,7 +94,7 @@ static unsigned char mincore_swap(swp_en
  */
 static unsigned char mincore_page(struct address_space *mapping, pgoff_t index)
 {
-	unsigned char present = 0;
+	unsigned char present;
 	struct folio *folio;
 
 	/*
@@ -104,17 +104,16 @@ static unsigned char mincore_page(struct
 	 * tmpfs's .fault). So swapped out tmpfs mappings are tested here.
 	 */
 	folio = filemap_get_entry(mapping, index);
-	if (folio) {
-		if (xa_is_value(folio)) {
-			if (shmem_mapping(mapping))
-				return mincore_swap(radix_to_swp_entry(folio),
-						    true);
-			else
-				return 0;
-		}
-		present = folio_test_uptodate(folio);
-		folio_put(folio);
+	if (!folio)
+		return 0;
+
+	if (xa_is_value(folio)) {
+		if (!shmem_mapping(mapping))
+			return 0;
+		return mincore_swap(radix_to_swp_entry(folio), true);
 	}
+	present = folio_test_uptodate(folio);
+	folio_put(folio);
 
 	return present;
 }
_

Patches currently in -mm which might be from [email protected] are

mm-migrate_device-fix-pte_pfn-pte_dirty-called-on-non-present-pte.patch
mm-remove-pagetranscompound.patch
mm-mincore-use-walk_page_range_vma-in-do_mincore.patch
mm-mprotect-use-walk_page_range_vma-in-mprotect_fixup.patch
mm-mlock-use-walk_page_range_vma-in-mlock_vma_pages_range.patch
mm-migrate_device-use-walk_page_range_vma-in-migrate_vma_collect.patch
mm-introduce-pud_is_huge-helper.patch
mm-mincore-remove-special-handling-for-vm_pfnmap.patch
mm-mincore-replace-__get_free_page-with-kmalloc.patch
mm-mincore-remove-xa_is_value-in-mincore_swap.patch
mm-mincore-improve-mincore_hugetlb.patch
mm-mincore-refactor-mincore_page.patch