diff options
Diffstat (limited to 'include/asm-s390/pgtable.h')
| -rw-r--r-- | include/asm-s390/pgtable.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/asm-s390/pgtable.h b/include/asm-s390/pgtable.h index 8fe8d42e64c..0a307bb2f35 100644 --- a/include/asm-s390/pgtable.h +++ b/include/asm-s390/pgtable.h @@ -744,7 +744,12 @@ ptep_establish(struct vm_area_struct *vma, } #define ptep_set_access_flags(__vma, __address, __ptep, __entry, __dirty) \ - ptep_establish(__vma, __address, __ptep, __entry) +({ \ + int __changed = !pte_same(*(__ptep), __entry); \ + if (__changed) \ + ptep_establish(__vma, __address, __ptep, __entry); \ + __changed; \ +}) /* * Test and clear dirty bit in storage key. |