From 8f423647be9c8b52518c5872d910e4127820d853 Mon Sep 17 00:00:00 2001
From: Andrew Morton <akpm@linux-foundation.org>
Date: Wed, 14 May 2014 10:01:55 +1000
Subject: [PATCH] swap-use-bdev_read_page-bdev_write_page-fix

fix used-uninitialized bug

mm/page_io.c: In function 'swap_readpage':
mm/page_io.c:332: warning: 'ret' may be used uninitialized in this function

Cc: Dave Chinner <david@fromorbit.com>
Cc: Dheeraj Reddy <dheeraj.reddy@intel.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox <matthew.r.wilcox@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/page_io.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/page_io.c b/mm/page_io.c
index 43d72203f76d..58b50d2901fe 100644
--- a/mm/page_io.c
+++ b/mm/page_io.c
@@ -329,7 +329,7 @@ out:
 int swap_readpage(struct page *page)
 {
 	struct bio *bio;
-	int ret;
+	int ret = 0;
 	struct swap_info_struct *sis = page_swap_info(page);
 
 	VM_BUG_ON_PAGE(!PageLocked(page), page);
-- 
2.39.5