[MIPS] Early check for SMTC kernel on non-MT processor

[linux-2.6] / include / asm-x86_64 / pgtable.h

diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h
index 08b9831f2e14f1efab15d594dd594d2a326cc098..0a71e0b9a619c162235f50bdd358da0a4942ff78 100644 (file)
--- a/include/asm-x86_64/pgtable.h
+++ b/include/asm-x86_64/pgtable.h
@@ -395,12 +395,14 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
  * bit at the same time. */
 #define  __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
 #define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \
-       do {                                                              \
-               if (__dirty) {                                            \
-                       set_pte(__ptep, __entry);                         \
-                       flush_tlb_page(__vma, __address);                 \
-               }                                                         \
-       } while (0)
+({                                                                       \
+       int __changed = !pte_same(*(__ptep), __entry);                    \
+       if (__changed && __dirty) {                                       \
+               set_pte(__ptep, __entry);                                 \
+               flush_tlb_page(__vma, __address);                         \
+       }                                                                 \
+       __changed;                                                        \
+})
 
 /* Encode and de-code a swap entry */
 #define __swp_type(x)                  (((x).val >> 1) & 0x3f)