compat_do_readv_writev 1154 fs/compat.c    	ret = compat_do_readv_writev(READ, file, vec, vlen, &file->f_pos);
compat_do_readv_writev 1177 fs/compat.c    	ret = compat_do_readv_writev(WRITE, file, vec, vlen, &file->f_pos);