[to-be-updated] mm-vmalloc-extract-vmap_set_ptes-to-consolidate-pte-mapping-logic.patch removed from -mm tree

The quilt patch titled
     Subject: mm/vmalloc: extract vmap_set_ptes() to consolidate PTE mapping logic
has been removed from the -mm tree.  Its filename was
     mm-vmalloc-extract-vmap_set_ptes-to-consolidate-pte-mapping-logic.patch

This patch was dropped because an updated version will be issued

------------------------------------------------------
From: Wen Jiang <[email protected]>
Subject: mm/vmalloc: extract vmap_set_ptes() to consolidate PTE mapping logic
Date: Wed, 15 Jul 2026 20:08:09 +0800

Extract the common PTE mapping logic from vmap_pte_range() into a shared
helper vmap_set_ptes().  This handles both CONT_PTE and regular PTE
mappings in a single function, preparing for the next patch which will
extend vmap_pages_pte_range() to also use this helper.

The #ifdef CONFIG_HUGETLB_PAGE guard is moved inside vmap_set_ptes(), so
callers no longer need to handle the conditional compilation.

No functional change.

Link: https://lore.kernel.org/[email protected]
Signed-off-by: Wen Jiang <[email protected]>
Tested-by: Xueyuan Chen <[email protected]>
Tested-by: Leo Yan <[email protected]>
Reviewed-by: Uladzislau Rezki (Sony) <[email protected]>
Reviewed-by: Dev Jain <[email protected]>
Cc: Andrew Donnellan <[email protected]>
Cc: Anshuman Khandual <[email protected]>
Cc: "Barry Song (Xiaomi)" <[email protected]>
Cc: Catalin Marinas <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: Mike Rapoport <[email protected]>
Cc: Ryan Roberts <[email protected]>
Cc: Will Deacon <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
---

 mm/vmalloc.c |   47 ++++++++++++++++++++++++++++++++---------------
 1 file changed, 32 insertions(+), 15 deletions(-)

--- a/mm/vmalloc.c~mm-vmalloc-extract-vmap_set_ptes-to-consolidate-pte-mapping-logic
+++ a/mm/vmalloc.c
@@ -93,6 +93,33 @@ struct vfree_deferred {
 static DEFINE_PER_CPU(struct vfree_deferred, vfree_deferred);
 
 /*** Page table manipulation functions ***/
+
+/*
+ * Try contiguous mappings at the PTE level for arches which support them, and if
+ * requested by the caller. Fall back to PAGE_SIZE mappings otherwise.
+ *
+ * Return: mapping size.
+ */
+static __always_inline unsigned long vmap_set_ptes(pte_t *pte,
+		unsigned long addr, unsigned long end, u64 pfn,
+		pgprot_t prot, unsigned int max_page_shift)
+{
+#ifdef CONFIG_HUGETLB_PAGE
+	unsigned long size;
+
+	size = arch_vmap_pte_range_map_size(addr, end, pfn, max_page_shift);
+	if (size != PAGE_SIZE) {
+		pte_t entry = pfn_pte(pfn, prot);
+
+		entry = arch_make_huge_pte(entry, ilog2(size), 0);
+		set_huge_pte_at(&init_mm, addr, pte, entry, size);
+		return size;
+	}
+#endif
+	set_pte_at(&init_mm, addr, pte, pfn_pte(pfn, prot));
+	return PAGE_SIZE;
+}
+
 static int vmap_pte_range(pmd_t *pmd, unsigned long addr, unsigned long end,
 			phys_addr_t phys_addr, pgprot_t prot,
 			unsigned int max_page_shift, pgtbl_mod_mask *mask)
@@ -100,7 +127,8 @@ static int vmap_pte_range(pmd_t *pmd, un
 	pte_t *pte;
 	u64 pfn;
 	struct page *page;
-	unsigned long size = PAGE_SIZE;
+	unsigned long size;
+	unsigned int steps;
 
 	if (WARN_ON_ONCE(!PAGE_ALIGNED(end - addr)))
 		return -EINVAL;
@@ -121,20 +149,9 @@ static int vmap_pte_range(pmd_t *pmd, un
 			BUG();
 		}
 
-#ifdef CONFIG_HUGETLB_PAGE
-		size = arch_vmap_pte_range_map_size(addr, end, pfn, max_page_shift);
-		if (size != PAGE_SIZE) {
-			pte_t entry = pfn_pte(pfn, prot);
-
-			entry = arch_make_huge_pte(entry, ilog2(size), 0);
-			set_huge_pte_at(&init_mm, addr, pte, entry, size);
-			pfn += PFN_DOWN(size);
-			continue;
-		}
-#endif
-		set_pte_at(&init_mm, addr, pte, pfn_pte(pfn, prot));
-		pfn++;
-	} while (pte += PFN_DOWN(size), addr += size, addr != end);
+		size = vmap_set_ptes(pte, addr, end, pfn, prot, max_page_shift);
+		steps = PFN_DOWN(size);
+	} while (pte += steps, pfn += steps, addr += size, addr != end);
 
 	lazy_mmu_mode_disable();
 	*mask |= PGTBL_PTE_MODIFIED;
_

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

mm-vmalloc-extract-vm_shift-to-consolidate-mapping-shift-selection.patch
mm-vmalloc-map-contiguous-pages-in-batches-for-vmap-if-possible-fix.patch