From: McMullan, Jason <jason.mcmullan@timesys.com>
Date: Tue, 17 May 2005 04:53:40 +0000 (-0700)
Subject: [PATCH] swapout oops fix
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=ba32311eb73f624a85a5fc2e043cda8e076f86ef;p=openwrt%2Fstaging%2Fblogic.git

[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 a60e0075d55b..da48405cd9a3 100644
--- 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);
 }