mm: soft-dirty bits for user memory changes tracking

[deliverable/linux.git] / include / asm-generic / pgtable.h

diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index a59ff51b016695f54095e753cbfc2a5a6b684684..a7126d28f4cf8786c51aeb5edfd2e6cc351785f7 100644 (file)
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -396,6 +396,28 @@ static inline void ptep_modify_prot_commit(struct mm_struct *mm,
 #define arch_start_context_switch(prev)        do {} while (0)
 #endif
 
+#ifndef CONFIG_HAVE_ARCH_SOFT_DIRTY
+static inline int pte_soft_dirty(pte_t pte)
+{
+       return 0;
+}
+
+static inline int pmd_soft_dirty(pmd_t pmd)
+{
+       return 0;
+}
+
+static inline pte_t pte_mksoft_dirty(pte_t pte)
+{
+       return pte;
+}
+
+static inline pmd_t pmd_mksoft_dirty(pmd_t pmd)
+{
+       return pmd;
+}
+#endif
+
 #ifndef __HAVE_PFNMAP_TRACKING
 /*
  * Interfaces that can be used by architecture code to keep track of
@@ -692,4 +714,8 @@ static inline pmd_t pmd_mknuma(pmd_t pmd)
 
 #endif /* !__ASSEMBLY__ */
 
+#ifndef io_remap_pfn_range
+#define io_remap_pfn_range remap_pfn_range
+#endif
+
 #endif /* _ASM_GENERIC_PGTABLE_H */