slab: propagate tunable values

[platform/adaptation/renesas_rcar/renesas_kernel.git] / mm / pgtable-generic.c

diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index e642627..0c8323f 100644 (file)
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -12,8 +12,8 @@
 
 #ifndef __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS
 /*
- * Only sets the access flags (dirty, accessed, and
- * writable). Furthermore, we know it always gets set to a "more
+ * Only sets the access flags (dirty, accessed), as well as write 
+ * permission. Furthermore, we know it always gets set to a "more
  * permissive" setting, which allows most architectures to optimize
  * this. We return whether the PTE actually changed, which in turn
  * instructs the caller to do things like update__mmu_cache.  This
@@ -27,7 +27,7 @@ int ptep_set_access_flags(struct vm_area_struct *vma,
        int changed = !pte_same(*ptep, entry);
        if (changed) {
                set_pte_at(vma->vm_mm, address, ptep, entry);
-               flush_tlb_page(vma, address);
+               flush_tlb_fix_spurious_fault(vma, address);
        }
        return changed;
 }
@@ -88,7 +88,8 @@ pte_t ptep_clear_flush(struct vm_area_struct *vma, unsigned long address,
 {
        pte_t pte;
        pte = ptep_get_and_clear((vma)->vm_mm, address, ptep);
-       flush_tlb_page(vma, address);
+       if (pte_accessible(pte))
+               flush_tlb_page(vma, address);
        return pte;
 }
 #endif