[PATCH] fix bdev leak in block_dev.c do_open()
Callers expect it to drop reference to bdev on all failure exits.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/fs/block_dev.c b/fs/block_dev.c
index dcf37ca..e664b0b 100644
--- a/fs/block_dev.c
+++ b/fs/block_dev.c
@@ -941,8 +941,10 @@
* 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;