1 files changed, 14 insertions, 0 deletions

diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index 71c5f9109f2a..4ed5908c65b0 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -123,6 +123,20 @@ pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
         flush_pmd_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
         return pmd;
 }
+
+#ifdef CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
+pud_t pudp_huge_clear_flush(struct vm_area_struct *vma, unsigned long address,
+                            pud_t *pudp)
+{
+        pud_t pud;
+
+        VM_BUG_ON(address & ~HPAGE_PUD_MASK);
+        VM_BUG_ON(!pud_trans_huge(*pudp) && !pud_devmap(*pudp));
+        pud = pudp_huge_get_and_clear(vma->vm_mm, address, pudp);
+        flush_pud_tlb_range(vma, address, address + HPAGE_PUD_SIZE);
+        return pud;
+}
+#endif
 #endif
 
 #ifndef __HAVE_ARCH_PGTABLE_DEPOSIT