[merged mm-stable] mm-mincore-improve-mincore_hugetlb.patch removed from -mm tree

The quilt patch titled
     Subject: mm: mincore: improve mincore_hugetlb()
has been removed from the -mm tree.  Its filename was
     mm-mincore-improve-mincore_hugetlb.patch

This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Kefeng Wang <[email protected]>
Subject: mm: mincore: improve mincore_hugetlb()
Date: Fri, 17 Jul 2026 17:13:46 +0800

walk_hugetlb_range() always passes a non-NULL pte, so remove the dead NULL
check.  Replace the per-page iteration loop with memset() for better
performance.

[[email protected]: fixup improve mincore_hugetlb()]
  Link: https://lore.kernel.org/[email protected]
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Kefeng Wang <[email protected]>
Reviewed-by: Pedro Falcato <[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: Vlastimil Babka <[email protected]>
Cc: Zi Yan <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 mm/mincore.c |   28 +++++++---------------------
 1 file changed, 7 insertions(+), 21 deletions(-)

--- a/mm/mincore.c~mm-mincore-improve-mincore_hugetlb
+++ a/mm/mincore.c
@@ -28,30 +28,16 @@ static int mincore_hugetlb(pte_t *pte, u
 			unsigned long end, struct mm_walk *walk)
 {
 #ifdef CONFIG_HUGETLB_PAGE
-	unsigned char present;
-	unsigned char *vec = walk->private;
+	const unsigned long nr = (end - addr) >> PAGE_SHIFT;
+	unsigned char resident;
 	spinlock_t *ptl;
+	pte_t ptep;
 
 	ptl = huge_pte_lock(hstate_vma(walk->vma), walk->mm, pte);
-
-	/*
-	 * Hugepages under user process are always in RAM and never
-	 * swapped out, but theoretically it needs to be checked.
-	 */
-	if (!pte) {
-		present = 0;
-	} else {
-		const pte_t ptep = huge_ptep_get(walk->mm, addr, pte);
-
-		if (huge_pte_none(ptep) || pte_is_marker(ptep))
-			present = 0;
-		else
-			present = 1;
-	}
-
-	for (; addr != end; vec++, addr += PAGE_SIZE)
-		*vec = present;
-	walk->private = vec;
+	ptep = huge_ptep_get(walk->mm, addr, pte);
+	resident = !huge_pte_none(ptep) && !pte_is_marker(ptep);
+	memset(walk->private, resident, nr);
+	walk->private += nr;
 	spin_unlock(ptl);
 #else
 	BUG();
_

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