mm/apply_to_range: call pte function with lazy updates

Make the pte-level function in apply_to_range be called in lazy mmu mode, so that any pagetable modifications can be batched.

---
mm/memory.c | 4 ++++

1 file changed, 4 insertions(+)

===================================================================

@@ -1545,6 +1545,8 @@
 

	BUG_ON(pmd_huge(*pmd));

+ arch_enter_lazy_mmu_mode();
+

	token = pmd_pgtable(*pmd);

	do {
@@ -1552,6 +1554,8 @@
		if (err)
			break;
	} while (pte++, addr += PAGE_SIZE, addr != end);

+
+ arch_leave_lazy_mmu_mode();

	if (mm != &init_mm)
		pte_unmap_unlock(pte-1, ptl);

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