From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753142AbaEMDxk (ORCPT ); Mon, 12 May 2014 23:53:40 -0400 Received: from szxga02-in.huawei.com ([119.145.14.65]:51460 "EHLO szxga02-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753023AbaEMDxi (ORCPT ); Mon, 12 May 2014 23:53:38 -0400 Message-ID: <537196D7.3020302@huawei.com> Date: Tue, 13 May 2014 11:51:51 +0800 From: Li Zefan User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:17.0) Gecko/20130801 Thunderbird/17.0.8 MIME-Version: 1.0 To: Tejun Heo CC: , Subject: Re: [PATCH 4/7] cgroup: update and fix parsing of "cgroup.subtree_control" References: <1399663975-315-1-git-send-email-tj@kernel.org> <1399663975-315-5-git-send-email-tj@kernel.org> In-Reply-To: <1399663975-315-5-git-send-email-tj@kernel.org> Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.177.18.230] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > diff --git a/kernel/cgroup.c b/kernel/cgroup.c > index 35daf89..b81e7c0 100644 > --- a/kernel/cgroup.c > +++ b/kernel/cgroup.c > @@ -2542,11 +2542,13 @@ static int cgroup_subtree_control_write(struct cgroup_subsys_state *dummy_css, > int ssid, ret; > > /* > - * Parse input - white space separated list of subsystem names > - * prefixed with either + or -. > + * Parse input - space separated list of subsystem names prefixed > + * with either + or -. > */ > p = buffer; > - while ((tok = strsep(&p, " \t\n"))) { > + while ((tok = strsep(&p, " "))) { > + if (tok[0] =='\0') if (tok[0] == '\0') > + continue;