The patch titled
mm/apply_to_range: call pte function with lazy updates
has been added to the -mm tree. Its filename is
mm-apply_to_range-call-pte-function-with-lazy-updates.patch
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------------------------------------------------------
Subject: mm/apply_to_range: call pte function with lazy updates
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
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@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Nick Piggin <nickpiggin@xxxxxxxxxxxx>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@xxxxxxxxx>
Cc: Hugh Dickins <hugh@xxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN mm/memory.c~mm-apply_to_range-call-pte-function-with-lazy-updates mm/memory.c
--- a/mm/memory.c~mm-apply_to_range-call-pte-function-with-lazy-updates
+++ a/mm/memory.c
@@ -1564,6 +1564,8 @@ static int apply_to_pte_range(struct mm_
BUG_ON(pmd_huge(*pmd));
+ arch_enter_lazy_mmu_mode();
+
token = pmd_pgtable(*pmd);
do {
@@ -1572,6 +1574,8 @@ static int apply_to_pte_range(struct mm_
break;
} while (pte++, addr += PAGE_SIZE, addr != end);
+ arch_leave_lazy_mmu_mode();
+
if (mm != &init_mm)
pte_unmap_unlock(pte-1, ptl);
return err;
_
Patches currently in -mm which might be from jeremy@xxxxxxxx are
linux-next.patch
mm-implement-remap_pfn_range-with-apply_to_page_range.patch
mm-apply_to_range-call-pte-function-with-lazy-updates.patch
mm-remap_pfn_range-restore-missing-flush.patch
drivers-xen-xenbus-xenbus_clientc-cleanup-kerneldoc.patch
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