diff options
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 34132f8e9109..666e4e677414 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -288,7 +288,7 @@ static int migrate_page_move_mapping(struct address_space *mapping, */ __dec_zone_page_state(page, NR_FILE_PAGES); __inc_zone_page_state(newpage, NR_FILE_PAGES); - if (PageSwapBacked(page)) { + if (!PageSwapCache(page) && PageSwapBacked(page)) { __dec_zone_page_state(page, NR_SHMEM); __inc_zone_page_state(newpage, NR_SHMEM); } @@ -721,15 +721,11 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private, * Only page_lock_anon_vma() understands the subtleties of * getting a hold on an anon_vma from outside one of its mms. */ - anon_vma = page_lock_anon_vma(page); + anon_vma = page_get_anon_vma(page); if (anon_vma) { /* - * Take a reference count on the anon_vma if the - * page is mapped so that it is guaranteed to - * exist when the page is remapped later + * Anon page */ - get_anon_vma(anon_vma); - page_unlock_anon_vma(anon_vma); } else if (PageSwapCache(page)) { /* * We cannot be sure that the anon_vma of an unmapped @@ -857,13 +853,8 @@ static int unmap_and_move_huge_page(new_page_t get_new_page, lock_page(hpage); } - if (PageAnon(hpage)) { - anon_vma = page_lock_anon_vma(hpage); - if (anon_vma) { - get_anon_vma(anon_vma); - page_unlock_anon_vma(anon_vma); - } - } + if (PageAnon(hpage)) + anon_vma = page_get_anon_vma(hpage); try_to_unmap(hpage, TTU_MIGRATION|TTU_IGNORE_MLOCK|TTU_IGNORE_ACCESS); |