diff options
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 26 |
1 files changed, 13 insertions, 13 deletions
diff --git a/mm/memory.c b/mm/memory.c index 655fd3d34bb0..d3cb2ef66ee2 100644 --- a/mm/memory.c +++ b/mm/memory.c | |||
| @@ -816,20 +816,20 @@ copy_one_pte(struct mm_struct *dst_mm, struct mm_struct *src_mm, | |||
| 816 | if (!pte_file(pte)) { | 816 | if (!pte_file(pte)) { |
| 817 | swp_entry_t entry = pte_to_swp_entry(pte); | 817 | swp_entry_t entry = pte_to_swp_entry(pte); |
| 818 | 818 | ||
| 819 | if (swap_duplicate(entry) < 0) | 819 | if (likely(!non_swap_entry(entry))) { |
| 820 | return entry.val; | 820 | if (swap_duplicate(entry) < 0) |
| 821 | 821 | return entry.val; | |
| 822 | /* make sure dst_mm is on swapoff's mmlist. */ | 822 | |
| 823 | if (unlikely(list_empty(&dst_mm->mmlist))) { | 823 | /* make sure dst_mm is on swapoff's mmlist. */ |
| 824 | spin_lock(&mmlist_lock); | 824 | if (unlikely(list_empty(&dst_mm->mmlist))) { |
| 825 | if (list_empty(&dst_mm->mmlist)) | 825 | spin_lock(&mmlist_lock); |
| 826 | list_add(&dst_mm->mmlist, | 826 | if (list_empty(&dst_mm->mmlist)) |
| 827 | &src_mm->mmlist); | 827 | list_add(&dst_mm->mmlist, |
| 828 | spin_unlock(&mmlist_lock); | 828 | &src_mm->mmlist); |
| 829 | } | 829 | spin_unlock(&mmlist_lock); |
| 830 | if (likely(!non_swap_entry(entry))) | 830 | } |
| 831 | rss[MM_SWAPENTS]++; | 831 | rss[MM_SWAPENTS]++; |
| 832 | else if (is_migration_entry(entry)) { | 832 | } else if (is_migration_entry(entry)) { |
| 833 | page = migration_entry_to_page(entry); | 833 | page = migration_entry_to_page(entry); |
| 834 | 834 | ||
| 835 | if (PageAnon(page)) | 835 | if (PageAnon(page)) |