From: Andrew Morton <akpm@linux-foundation.org>

Fix up blkdev_open() error-path refcounting.

Cc: Rafał Bilski <rafalbilski@interia.pl>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 fs/block_dev.c |    4 +++-
 1 files changed, 3 insertions(+), 1 deletion(-)

diff -puN fs/block_dev.c~remove-bdput-from-do_open-in-fs-block_devc-fix fs/block_dev.c
--- a/fs/block_dev.c~remove-bdput-from-do_open-in-fs-block_devc-fix
+++ a/fs/block_dev.c
@@ -1246,8 +1246,10 @@ static int blkdev_open(struct inode * in
 		return -ENOMEM;
 
 	res = do_open(bdev, filp, 0);
-	if (res)
+	if (res) {
+		bdput(bdev);
 		return res;
+	}
 
 	if (!(filp->f_flags & O_EXCL) )
 		return 0;
_