[CIFS] Support deep tree mounts (e.g. mounts to //server/share/path)

Samba bugzilla #4040

Signed-off-by: Steve French <sfrench@us.ibm.com>
diff --git a/fs/cifs/cifs_fs_sb.h b/fs/cifs/cifs_fs_sb.h
index ad58eb0..fd1e52e 100644
--- a/fs/cifs/cifs_fs_sb.h
+++ b/fs/cifs/cifs_fs_sb.h
@@ -40,5 +40,7 @@
 	mode_t	mnt_file_mode;
 	mode_t	mnt_dir_mode;
 	int     mnt_cifs_flags;
+	int	prepathlen;
+	char *  prepath;
 };
 #endif				/* _CIFS_FS_SB_H */