+ mm-mincore-improve-mincore_hugetlb-fix.patch added to mm-unstable branch

The patch titled
     Subject: mm: mincore: fixup improve mincore_hugetlb()
has been added to the -mm mm-unstable branch.  Its filename is
     mm-mincore-improve-mincore_hugetlb-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-improve-mincore_hugetlb-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 <[email protected]>
Subject: mm: mincore: fixup improve mincore_hugetlb()
Date: Mon, 20 Jul 2026 20:42:52 +0800

- change unsigned long nr to const
- remove a local vec variable

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Kefeng Wang <[email protected]>
Cc: 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 |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/mm/mincore.c~mm-mincore-improve-mincore_hugetlb-fix
+++ a/mm/mincore.c
@@ -28,8 +28,7 @@ static int mincore_hugetlb(pte_t *pte, u
 			unsigned long end, struct mm_walk *walk)
 {
 #ifdef CONFIG_HUGETLB_PAGE
-	unsigned long nr = (end - addr) >> PAGE_SHIFT;
-	unsigned char *vec = walk->private;
+	const unsigned long nr = (end - addr) >> PAGE_SHIFT;
 	unsigned char resident;
 	spinlock_t *ptl;
 	pte_t ptep;
@@ -37,7 +36,7 @@ static int mincore_hugetlb(pte_t *pte, u
 	ptl = huge_pte_lock(hstate_vma(walk->vma), walk->mm, pte);
 	ptep = huge_ptep_get(walk->mm, addr, pte);
 	resident = !huge_pte_none(ptep) && !pte_is_marker(ptep);
-	memset(vec, resident, nr);
+	memset(walk->private, resident, nr);
 	walk->private += nr;
 	spin_unlock(ptl);
 #else
_

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-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