khugepaged: enable collapse pmd for pte-mapped THP

[linux-2.6-block.git] / include / linux / khugepaged.h

diff --git a/include/linux/khugepaged.h b/include/linux/khugepaged.h
index 082d1d2a5216977262d3a1817b30a9131efe873a..bc45ea1efbf7973362c6cb99b433ecba4f95612a 100644 (file)
--- a/include/linux/khugepaged.h
+++ b/include/linux/khugepaged.h
@@ -15,6 +15,14 @@ extern int __khugepaged_enter(struct mm_struct *mm);
 extern void __khugepaged_exit(struct mm_struct *mm);
 extern int khugepaged_enter_vma_merge(struct vm_area_struct *vma,
                                      unsigned long vm_flags);
+#ifdef CONFIG_SHMEM
+extern void collapse_pte_mapped_thp(struct mm_struct *mm, unsigned long addr);
+#else
+static inline void collapse_pte_mapped_thp(struct mm_struct *mm,
+                                          unsigned long addr)
+{
+}
+#endif
 
 #define khugepaged_enabled()                                          \
        (transparent_hugepage_flags &                                  \
@@ -73,6 +81,10 @@ static inline int khugepaged_enter_vma_merge(struct vm_area_struct *vma,
 {
        return 0;
 }
+static inline void collapse_pte_mapped_thp(struct mm_struct *mm,
+                                          unsigned long addr)
+{
+}
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE */
 
 #endif /* _LINUX_KHUGEPAGED_H */