diff options
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index 18aac7819cc9..985f23cfa79b 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -252,7 +252,7 @@ out: static sector_t swap_page_sector(struct page *page) { - return (sector_t)__page_file_index(page) << (PAGE_CACHE_SHIFT - 9); + return (sector_t)__page_file_index(page) << (PAGE_SHIFT - 9); } int __swap_writepage(struct page *page, struct writeback_control *wbc, @@ -353,7 +353,11 @@ int swap_readpage(struct page *page) ret = bdev_read_page(sis->bdev, swap_page_sector(page), page); if (!ret) { - swap_slot_free_notify(page); + if (trylock_page(page)) { + swap_slot_free_notify(page); + unlock_page(page); + } + count_vm_event(PSWPIN); return 0; } |