diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index c45a2ea..bb4a11d 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -272,7 +272,7 @@
 	 * 2.  Is that directory a mount point, or
 	 * 3.  Is that directory the root of an exported file system?
 	 */
-	error = nlmsvc_unlock_all_by_sb(path.mnt->mnt_sb);
+	error = nlmsvc_unlock_all_by_sb(path.dentry->d_sb);
 
 	path_put(&path);
 	return error;