[merged mm-stable] mm-page_vma_mapped-guard-check_pmd-with-config_transparent_hugepage.patch removed from -mm tree

[merged mm-stable] mm-page_vma_mapped-guard-check_pmd-with-config_transparent_hugepage.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: mm/page_vma_mapped: guard check_pmd() with CONFIG_TRANSPARENT_HUGEPAGE
has been removed from the -mm tree.  Its filename was
     mm-page_vma_mapped-guard-check_pmd-with-config_transparent_hugepage.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: Wei Yang <richard.weiyang@gmail.com>
Subject: mm/page_vma_mapped: guard check_pmd() with CONFIG_TRANSPARENT_HUGEPAGE
Date: Wed, 24 Jun 2026 08:23:59 +0000

The kernel test robot reported a build failure on the parisc architecture
when expanding HPAGE_PMD_NR in check_pmd().

   mm/page_vma_mapped.c:142:13: note: in expansion of macro 'HPAGE_PMD_NR'
     if ((pfn + HPAGE_PMD_NR - 1) < pvmw->pfn)
                ^~~~~~~~~~~~

The config [1] in report link shows neither TRANSPARENT_HUGEPAGE nor
HUGETLB_PAGE is defined.  Then trigger the BUILD_BUG.

Fix it by define check_pmd() under CONFIG_TRANSPARENT_HUGEPAGE.

Link: https://lore.kernel.org/20260624082359.2869-1-richard.weiyang@gmail.com
Link: https://download.01.org/0day-ci/archive/20260624/202606240042.ffPsEXVc-lkp@intel.com/config [1]
Fixes: 2aff7a4755be ("mm: Convert page_vma_mapped_walk to work on PFNs")
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202606240042.ffPsEXVc-lkp@intel.com/
Cc: David Hildenbrand <david@kernel.org>
Cc: Harry Yoo <harry@kernel.org>
Cc: Jann Horn <jannh@google.com>
Cc: Lance Yang <lance.yang@linux.dev>
Cc: Liam R. Howlett <liam@infradead.org>
Cc: Lorenzo Stoakes <ljs@kernel.org>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Rik van Riel <riel@surriel.com>
Cc: Vlastimil Babka <vbabka@kernel.org>
---

 mm/page_vma_mapped.c |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/mm/page_vma_mapped.c~mm-page_vma_mapped-guard-check_pmd-with-config_transparent_hugepage
+++ a/mm/page_vma_mapped.c
@@ -142,6 +142,7 @@ static bool check_pte(struct page_vma_ma
 	return true;
 }
 
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
 /* Returns true if the two ranges overlap.  Careful to not overflow. */
 static bool check_pmd(unsigned long pfn, struct page_vma_mapped_walk *pvmw)
 {
@@ -151,6 +152,12 @@ static bool check_pmd(unsigned long pfn,
 		return false;
 	return true;
 }
+#else
+static bool check_pmd(unsigned long pfn, struct page_vma_mapped_walk *pvmw)
+{
+	return false;
+}
+#endif
 
 static void step_forward(struct page_vma_mapped_walk *pvmw, unsigned long size)
 {
_

Patches currently in -mm which might be from richard.weiyang@gmail.com are