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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2009-01-06 14:39:21 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-01-06 15:59:01 -0800 |
| commit | 38e0edb15bd07c6a0caf0cfe39f8f90bd98601b2 (patch) | |
| tree | 1ba874020bb20412ba312abef199a8668c5b99a6 /mm/memory.c | |
| parent | cd52858c73f9f7df859a08fb08496ca39b9b3d8d (diff) | |
| download | lwn-38e0edb15bd07c6a0caf0cfe39f8f90bd98601b2.tar.gz lwn-38e0edb15bd07c6a0caf0cfe39f8f90bd98601b2.zip | |
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>
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/memory.c b/mm/memory.c index 99e8d5c7b312..b5af358b8b22 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -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; |