switch unix_sock to struct path

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/net/af_unix.h b/include/net/af_unix.h
index 5a4e29b..ca68e2c 100644
--- a/include/net/af_unix.h
+++ b/include/net/af_unix.h
@@ -49,8 +49,7 @@
 	/* WARNING: sk has to be the first member */
 	struct sock		sk;
 	struct unix_address     *addr;
-	struct dentry		*dentry;
-	struct vfsmount		*mnt;
+	struct path		path;
 	struct mutex		readlock;
 	struct sock		*peer;
 	struct sock		*other;