sparc: huge_ptep_set_* functions need to call set_huge_pte_at()

Modifying the huge pte's requires that all the underlying pte's be modified. Version 2: added missing flush_tlb_page() Signed-off-by: Dave Kleikamp <[email protected]> Cc: "David S. Miller" <[email protected]> Cc: [email protected] Signed-off-by: David S. Miller <[email protected]>
zehome · Dec 18, 2012 · 6cb9c36 · 6cb9c36
1 parent 31564cb
commit 6cb9c36
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/arch/sparc/include/asm/hugetlb.h b/arch/sparc/include/asm/hugetlb.h
@@ -61,14 +61,20 @@ static inline pte_t huge_pte_wrprotect(pte_t pte)
 static inline void huge_ptep_set_wrprotect(struct mm_struct *mm,
 					   unsigned long addr, pte_t *ptep)
 {
-	ptep_set_wrprotect(mm, addr, ptep);
+	pte_t old_pte = *ptep;
+	set_huge_pte_at(mm, addr, ptep, pte_wrprotect(old_pte));
 }
 
 static inline int huge_ptep_set_access_flags(struct vm_area_struct *vma,
 					     unsigned long addr, pte_t *ptep,
 					     pte_t pte, int dirty)
 {
-	return ptep_set_access_flags(vma, addr, ptep, pte, dirty);
+	int changed = !pte_same(*ptep, pte);
+	if (changed) {
+		set_huge_pte_at(vma->vm_mm, addr, ptep, pte);
+		flush_tlb_page(vma, addr);
+	}
+	return changed;
 }
 
 static inline pte_t huge_ptep_get(pte_t *ptep)