linux-kernel - Re: [PATCH] cgroup: move a check to parse_cgroupfs

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Date:	Fri, 23 Dec 2011 14:52:40 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>
Subject: Re: [PATCH] cgroup: move a check to parse_cgroupfs_options()

Hello,

On Thu, Dec 22, 2011 at 7:40 PM, Li Zefan <lizf@...fujitsu.com> wrote:
>> And where did this one go?
>
> The other one I removed sets opts->new_root to NULL, and this one detects
> the NULL ptr:
>
> if (!opts->subsys_bits && !opts->none)
>        return NULL;
> ...
> opts->new_root = NULL;
> ...
> if (!opts->new_root)
>        return -EINVAL;
>
> shortcut to:
>
> if (!opts->subsys_bits && !opts->none)
>        return -EINVAL;

Thanks for the explanation. Maybe explaining it briefly in the commit
message would be nice?

-- 
tejun
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