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 fb1fa269d3a0..eafe5ddc2b54 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -264,6 +264,7 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc, int ret; struct swap_info_struct *sis = page_swap_info(page); + BUG_ON(!PageSwapCache(page)); if (sis->flags & SWP_FILE) { struct kiocb kiocb; struct file *swap_file = sis->swap_file; @@ -319,9 +320,10 @@ int __swap_writepage(struct page *page, struct writeback_control *wbc, ret = -ENOMEM; goto out; } - bio_set_op_attrs(bio, REQ_OP_WRITE, 0); if (wbc->sync_mode == WB_SYNC_ALL) - bio->bi_rw |= REQ_SYNC; + bio_set_op_attrs(bio, REQ_OP_WRITE, REQ_SYNC); + else + bio_set_op_attrs(bio, REQ_OP_WRITE, 0); count_vm_event(PSWPOUT); set_page_writeback(page); unlock_page(page); @@ -336,6 +338,7 @@ int swap_readpage(struct page *page) int ret = 0; struct swap_info_struct *sis = page_swap_info(page); + BUG_ON(!PageSwapCache(page)); VM_BUG_ON_PAGE(!PageLocked(page), page); VM_BUG_ON_PAGE(PageUptodate(page), page); if (frontswap_load(page) == 0) { @@ -385,6 +388,7 @@ int swap_set_page_dirty(struct page *page) if (sis->flags & SWP_FILE) { struct address_space *mapping = sis->swap_file->f_mapping; + BUG_ON(!PageSwapCache(page)); return mapping->a_ops->set_page_dirty(page); } else { return __set_page_dirty_no_writeback(page); |