+ mm-mincore-remove-special-handling-for-vm_pfnmap-fix.patch added to mm-unstable branch

+ mm-mincore-remove-special-handling-for-vm_pfnmap-fix.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm: mincore: fixup for remove special handling for VM_PFNMAP
has been added to the -mm mm-unstable branch.  Its filename is
     mm-mincore-remove-special-handling-for-vm_pfnmap-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-mincore-remove-special-handling-for-vm_pfnmap-fix.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: mincore: fixup for remove special handling for VM_PFNMAP
Date: Mon, 20 Jul 2026 20:41:51 +0800

Address David's comments
- rename mincore_pud_range to mincore_pud_entry
- change int nr to const unsigned long
- remove a local vec variable

Link: https://lore.kernel.org/20260720124151.1483820-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: David Hildenbrand (Arm) <david@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/mincore.c |   11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

--- a/mm/mincore.c~mm-mincore-remove-special-handling-for-vm_pfnmap-fix
+++ a/mm/mincore.c
@@ -160,16 +160,15 @@ static int mincore_unmapped_range(unsign
 	return 0;
 }
 
-static int mincore_pud_range(pud_t *pudp, unsigned long addr, unsigned long end,
+static int mincore_pud_entry(pud_t *pudp, unsigned long addr, unsigned long end,
 		struct mm_walk *walk)
 {
 	if (pud_is_huge(pudp_get(pudp))) {
-		int nr = (end - addr) >> PAGE_SHIFT;
-		unsigned char *vec = walk->private;
+		const unsigned long nr = (end - addr) >> PAGE_SHIFT;
 
-		memset(vec, 1, nr);
-		walk->action = ACTION_CONTINUE;
+		memset(walk->private, 1, nr);
 		walk->private += nr;
+		walk->action = ACTION_CONTINUE;
 	}
 
 	return 0;
@@ -247,7 +246,7 @@ static inline bool can_do_mincore(struct
 }
 
 static const struct mm_walk_ops mincore_walk_ops = {
-	.pud_entry		= mincore_pud_range,
+	.pud_entry		= mincore_pud_entry,
 	.pmd_entry		= mincore_pte_range,
 	.pte_hole		= mincore_unmapped_range,
 	.hugetlb_entry		= mincore_hugetlb,
_

Patches currently in -mm which might be from wangkefeng.wang@huawei.com 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-remove-special-handling-for-vm_pfnmap-fix.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-improve-mincore_hugetlb-fix.patch
mm-mincore-refactor-mincore_page.patch