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Subject[PATCH 2/2] 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.

Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
---
mm/memory.c | 4 ++++
1 file changed, 4 insertions(+)

===================================================================
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -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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