Revert "mm: replace p??_write with pte_access_permitted in fault + gup paths"
[muen/linux.git] / mm / memory.c
index cfaba62877029a4173c3e04a8abc12d490ae7869..ca5674cbaff2b65c4e51086e5922fbbd274f2cfa 100644 (file)
@@ -3949,7 +3949,7 @@ static int handle_pte_fault(struct vm_fault *vmf)
        if (unlikely(!pte_same(*vmf->pte, entry)))
                goto unlock;
        if (vmf->flags & FAULT_FLAG_WRITE) {
-               if (!pte_access_permitted(entry, WRITE))
+               if (!pte_write(entry))
                        return do_wp_page(vmf);
                entry = pte_mkdirty(entry);
        }
@@ -4014,7 +4014,7 @@ static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
 
                        /* NUMA case for anonymous PUDs would go here */
 
-                       if (dirty && !pud_access_permitted(orig_pud, WRITE)) {
+                       if (dirty && !pud_write(orig_pud)) {
                                ret = wp_huge_pud(&vmf, orig_pud);
                                if (!(ret & VM_FAULT_FALLBACK))
                                        return ret;
@@ -4047,7 +4047,7 @@ static int __handle_mm_fault(struct vm_area_struct *vma, unsigned long address,
                        if (pmd_protnone(orig_pmd) && vma_is_accessible(vma))
                                return do_huge_pmd_numa_page(&vmf, orig_pmd);
 
-                       if (dirty && !pmd_access_permitted(orig_pmd, WRITE)) {
+                       if (dirty && !pmd_write(orig_pmd)) {
                                ret = wp_huge_pmd(&vmf, orig_pmd);
                                if (!(ret & VM_FAULT_FALLBACK))
                                        return ret;
@@ -4337,7 +4337,7 @@ int follow_phys(struct vm_area_struct *vma,
                goto out;
        pte = *ptep;
 
-       if (!pte_access_permitted(pte, flags & FOLL_WRITE))
+       if ((flags & FOLL_WRITE) && !pte_write(pte))
                goto unlock;
 
        *prot = pgprot_val(pte_pgprot(pte));