[merged mm-stable] mm-introduce-pud_is_huge-helper.patch removed from -mm tree

[merged mm-stable] mm-introduce-pud_is_huge-helper.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm: introduce pud_is_huge() helper
has been removed from the -mm tree.  Its filename was
     mm-introduce-pud_is_huge-helper.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 <wangkefeng.wang@huawei.com>
Subject: mm: introduce pud_is_huge() helper
Date: Fri, 17 Jul 2026 17:13:42 +0800

Patch series "mm: mincore: misc cleanups", v3.

This series cleans up and simplifies the mincore.  Most importantly, it
removes the historical special behavior that always reports VM_PFNMAP
pages as non-resident.


This patch (of 6):

Introduce the pud_is_huge() helper function to check whether a PUD is a
huge PUD or a software leaf entry.  Note that, unlike PMD, PUD currently
does not support transparent migration entries or device private entries. 
However, the function still includes `!pud_none()` branches to accommodate
potential future implementations.

Link: https://lore.kernel.org/20260717091347.1144789-1-wangkefeng.wang@huawei.com
Link: https://lore.kernel.org/20260717091347.1144789-2-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: 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>
---

 include/linux/huge_mm.h |   23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

--- a/include/linux/huge_mm.h~mm-introduce-pud_is_huge-helper
+++ a/include/linux/huge_mm.h
@@ -472,6 +472,24 @@ void split_huge_pmd_address(struct vm_ar
 void __split_huge_pud(struct vm_area_struct *vma, pud_t *pud,
 		unsigned long address);
 
+/**
+ * pud_is_huge() - Is this PUD either a huge PUD entry or a software leaf entry?
+ * @pud: The PUD to check.
+ *
+ * This is similar to pmd_is_huge(), but it checks at the PUD level.
+ *
+ * Returns: true if this PUD is huge, false otherwise.
+ */
+static inline bool pud_is_huge(pud_t pud)
+{
+	if (pud_present(pud))
+		return pud_trans_huge(pud);
+	else if (!pud_none(pud))
+		return true;
+
+	return false;
+}
+
 #ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
 int change_huge_pud(struct mmu_gather *tlb, struct vm_area_struct *vma,
 		    pud_t *pudp, unsigned long addr, pgprot_t newprot,
@@ -798,6 +816,11 @@ static inline bool pmd_is_huge(pmd_t pmd
 {
 	return false;
 }
+
+static inline bool pud_is_huge(pud_t pud)
+{
+	return false;
+}
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
 static inline bool is_pmd_order(unsigned int order)
_

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