diff options
Diffstat (limited to 'mm/swapfile.c')
| -rw-r--r-- | mm/swapfile.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/swapfile.c b/mm/swapfile.c index f1e69c30d203..9678182e0eef 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -646,6 +646,7 @@ static int try_to_unuse(unsigned int type) */ swap_map = &si->swap_map[i]; entry = swp_entry(type, i); +again: page = read_swap_cache_async(entry, NULL, 0); if (!page) { /* @@ -680,6 +681,12 @@ static int try_to_unuse(unsigned int type) wait_on_page_locked(page); wait_on_page_writeback(page); lock_page(page); + if (!PageSwapCache(page)) { + /* Page migration has occured */ + unlock_page(page); + page_cache_release(page); + goto again; + } wait_on_page_writeback(page); /* |