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-rw-r--r--mm/pgtable-generic.c14
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