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mm/apply_to_range: call pte function with lazy updates

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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 <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Nick Piggin <[email protected]>
Cc: Venkatesh Pallipadi <[email protected]>
Cc: Hugh Dickins <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Jeremy Fitzhardinge authored and Linus Torvalds committed 2009-01-06 15:59:01 -08:00
1 parent cd52858c73
commit 38e0edb15b
1 file changed
+4
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mm/memory.c
+4
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@@ -1645,6 +1645,8 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
BUG_ON(pmd_huge(*pmd));
arch_enter_lazy_mmu_mode();
token = pmd_pgtable(*pmd);
do {
@@ -1653,6 +1655,8 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
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;