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Message-Id: <20150721.222858.1855944921733592230.davem@davemloft.net>
Date: Tue, 21 Jul 2015 22:28:58 -0700 (PDT)
From: David Miller <davem@...emloft.net>
To: khlebnikov@...dex-team.ru
Cc: netdev@...r.kernel.org, tj@...nel.org, cgroups@...r.kernel.org,
lizefan@...wei.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] cgroup: net_cls: fix false-positive "suspicious RCU
usage"
From: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Date: Tue, 21 Jul 2015 19:46:29 +0300
> @@ -23,7 +23,8 @@ static inline struct cgroup_cls_state *css_cls_state(struct cgroup_subsys_state
>
> struct cgroup_cls_state *task_cls_state(struct task_struct *p)
> {
> - return css_cls_state(task_css(p, net_cls_cgrp_id));
> + return css_cls_state(task_css_check(p, net_cls_cgrp_id,
> + rcu_read_lock_bh_held()));
You've made a serious mess of the indentation here.
First of all, you've changed the correct plain "TAB" before the 'return' line
into a TAB and two SPACE characters.
Secondly, the second line needs to be precisely indented to the exact column
following the openning parenthesis of the task_css_check() call on the
previous line.
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