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-rw-r--r--mm/pgtable-generic.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index d030548047e2..0369f5b3ba1b 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -92,32 +92,29 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
#endif
#ifndef __HAVE_ARCH_PMDP_CLEAR_FLUSH
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
pmd_t pmdp_clear_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
pmd_t pmd;
-#ifndef CONFIG_TRANSPARENT_HUGEPAGE
- BUG();
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
pmd = pmdp_get_and_clear(vma->vm_mm, address, pmdp);
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
return pmd;
}
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif
#ifndef __HAVE_ARCH_PMDP_SPLITTING_FLUSH
+#ifdef CONFIG_TRANSPARENT_HUGEPAGE
pmd_t pmdp_splitting_flush(struct vm_area_struct *vma, unsigned long address,
pmd_t *pmdp)
{
-#ifdef CONFIG_TRANSPARENT_HUGEPAGE
pmd_t pmd = pmd_mksplitting(*pmdp);
VM_BUG_ON(address & ~HPAGE_PMD_MASK);
set_pmd_at(vma->vm_mm, address, pmdp, pmd);
/* tlb flush only to serialize against gup-fast */
flush_tlb_range(vma, address, address + HPAGE_PMD_SIZE);
-#else /* CONFIG_TRANSPARENT_HUGEPAGE */
- BUG();
-#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
}
+#endif /* CONFIG_TRANSPARENT_HUGEPAGE */
#endif