1 files changed, 5 insertions, 2 deletions

diff --git a/fs/block_dev.c b/fs/block_dev.c
index 10d8a0aa871a..aff54219e049 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -271,7 +271,7 @@ static void bdev_destroy_inode(struct inode *inode)
         kmem_cache_free(bdev_cachep, bdi);
 }
 
-static void init_once(struct kmem_cache * cachep, void *foo)
+static void init_once(void *foo)
 {
         struct bdev_inode *ei = (struct bdev_inode *) foo;
         struct block_device *bdev = &ei->bdev;
@@ -941,8 +941,10 @@ static int do_open(struct block_device *bdev, struct file *file, int for_part)
          * hooks: /n/, see "layering violations".
          */
         ret = devcgroup_inode_permission(bdev->bd_inode, perm);
-        if (ret != 0)
+        if (ret != 0) {
+                bdput(bdev);
                 return ret;
+        }
 
         ret = -ENXIO;
         file->f_mapping = bdev->bd_inode->i_mapping;
@@ -1234,6 +1236,7 @@ fail:
         bdev = ERR_PTR(error);
         goto out;
 }
+EXPORT_SYMBOL(lookup_bdev);
 
 /**
  * open_bdev_excl  -  open a block device by name and set it up for use