[PATCH] swapout oops fix

Fix OOPS when swapping on a device that doesn't have an unplug_io_fn defined
(eg, ATA Over Ethernet)

Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/mm/swapfile.c b/mm/swapfile.c
index a60e007..da48405 100644 (file)
--- a/mm/swapfile.c
+++ b/mm/swapfile.c
@@ -79,7 +79,7 @@ void swap_unplug_io_fn(struct backing_dev_info *unused_bdi, struct page *page)
                WARN_ON(page_count(page) <= 1);
 
                bdi = bdev->bd_inode->i_mapping->backing_dev_info;
-               bdi->unplug_io_fn(bdi, page);
+               blk_run_backing_dev(bdi, page);
        }
        up_read(&swap_unplug_sem);
 }