Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro.

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  gfs2_meta: ->mount() can get NULL dev_name
  ecryptfs_rename(): verify that lower dentries are still OK after lock_rename()
  cachefiles: fix the race between cachefiles_bury_object() and rmdir(2)

fs/gfs2/ops_fstype.c

@@ -1333,6 +1333,9 @@ static struct dentry *gfs2_mount_meta(struct file_system_type *fs_type,
 	struct path path;
 	int error;
 
+	if (!dev_name || !*dev_name)
+		return ERR_PTR(-EINVAL);
+
 	error = kern_path(dev_name, LOOKUP_FOLLOW, &path);
 	if (error) {
 		pr_warn("path_lookup on %s returned error %d\n",