1 files changed, 5 insertions, 2 deletions

diff --git a/arch/powerpc/include/asm/pgtable.h b/arch/powerpc/include/asm/pgtable.h
index a8805fee0df9..7e77f2ca5132 100644
--- a/arch/powerpc/include/asm/pgtable.h
+++ b/arch/powerpc/include/asm/pgtable.h
@@ -30,7 +30,8 @@ struct mm_struct;
 #include <asm/tlbflush.h>
 
 /* Generic accessors to PTE bits */
-static inline int pte_write(pte_t pte)          { return pte_val(pte) & _PAGE_RW; }
+static inline int pte_write(pte_t pte)
+{       return (pte_val(pte) & (_PAGE_RW | _PAGE_RO)) != _PAGE_RO; }
 static inline int pte_dirty(pte_t pte)          { return pte_val(pte) & _PAGE_DIRTY; }
 static inline int pte_young(pte_t pte)          { return pte_val(pte) & _PAGE_ACCESSED; }
 static inline int pte_file(pte_t pte)           { return pte_val(pte) & _PAGE_FILE; }
@@ -115,12 +116,14 @@ static inline unsigned long pte_pfn(pte_t pte)	{
 
 /* Generic modifiers for PTE bits */
 static inline pte_t pte_wrprotect(pte_t pte) {
-        pte_val(pte) &= ~(_PAGE_RW | _PAGE_HWWRITE); return pte; }
+        pte_val(pte) &= ~(_PAGE_RW | _PAGE_HWWRITE);
+        pte_val(pte) |= _PAGE_RO; return pte; }
 static inline pte_t pte_mkclean(pte_t pte) {
         pte_val(pte) &= ~(_PAGE_DIRTY | _PAGE_HWWRITE); return pte; }
 static inline pte_t pte_mkold(pte_t pte) {
         pte_val(pte) &= ~_PAGE_ACCESSED; return pte; }
 static inline pte_t pte_mkwrite(pte_t pte) {
+        pte_val(pte) &= ~_PAGE_RO;
         pte_val(pte) |= _PAGE_RW; return pte; }
 static inline pte_t pte_mkdirty(pte_t pte) {
         pte_val(pte) |= _PAGE_DIRTY; return pte; }