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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>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeremy Fitzhardinge 2009-01-06 14:39:21 -08:00 committed by Linus Torvalds
parent cd52858c73
commit 38e0edb15b
1 changed files with 4 additions and 0 deletions
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4
mm/memory.c
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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)); BUG_ON(pmd_huge(*pmd));
arch_enter_lazy_mmu_mode();
token = pmd_pgtable(*pmd); token = pmd_pgtable(*pmd);
do { do {
@ -1653,6 +1655,8 @@ static int apply_to_pte_range(struct mm_struct *mm, pmd_t *pmd,
break; break;
} while (pte++, addr += PAGE_SIZE, addr != end); } while (pte++, addr += PAGE_SIZE, addr != end);
arch_leave_lazy_mmu_mode();
if (mm != &init_mm) if (mm != &init_mm)
pte_unmap_unlock(pte-1, ptl); pte_unmap_unlock(pte-1, ptl);
return err; return err;