diff options
Diffstat (limited to 'include/asm-ppc/pgtable.h')
| -rw-r--r-- | include/asm-ppc/pgtable.h | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/include/asm-ppc/pgtable.h b/include/asm-ppc/pgtable.h index bed452d4a5f..9d0ce9ff584 100644 --- a/include/asm-ppc/pgtable.h +++ b/include/asm-ppc/pgtable.h @@ -694,10 +694,14 @@ static inline void __ptep_set_access_flags(pte_t *ptep, pte_t entry, int dirty) } #define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \ - do { \ - __ptep_set_access_flags(__ptep, __entry, __dirty); \ - flush_tlb_page_nohash(__vma, __address); \ - } while(0) +({ \ + int __changed = !pte_same(*(__ptep), __entry); \ + if (__changed) { \ + __ptep_set_access_flags(__ptep, __entry, __dirty); \ + flush_tlb_page_nohash(__vma, __address); \ + } \ + __changed; \ +}) /* * Macro to mark a page protection value as "uncacheable". |