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| author | John Stultz <john.stultz@linaro.org> | 2011-10-26 13:48:49 -0700 |
|---|---|---|
| committer | John Stultz <john.stultz@linaro.org> | 2011-10-26 13:48:49 -0700 |
| commit | 2216773fc021964a413409141d439de4f6a108f7 (patch) | |
| tree | 7b2f8cdcdf5fb05d75bd92f0c8d9ac635ceec48c /mm/migrate.c | |
| parent | 42ac8ca89aef66618e8ae2d6e48e3f523bfcd69d (diff) | |
| parent | af1bdb79ca64ceadc7b44b11929b384eff66ce59 (diff) | |
Merge branch 'upstream/linaro-3.1' into linaro-android-3.1-agreen-rebaselinux-linaro-3.1-2011.10-2-android-0
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 666e4e67741..14d0a6a632f 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -120,10 +120,10 @@ static int remove_migration_pte(struct page *new, struct vm_area_struct *vma, ptep = pte_offset_map(pmd, addr); - if (!is_swap_pte(*ptep)) { - pte_unmap(ptep); - goto out; - } + /* + * Peek to check is_swap_pte() before taking ptlock? No, we + * can race mremap's move_ptes(), which skips anon_vma lock. + */ ptl = pte_lockptr(mm, pmd); } |