linux-kernel - Re: [PATCH 02/10] cgroup: introduce cgroup_subsys->legacy

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Message-ID: <55B723A8.1080201@huawei.com>
Date:	Tue, 28 Jul 2015 14:39:36 +0800
From:	Zefan Li <lizefan@...wei.com>
To:	Tejun Heo <tj@...nel.org>
CC:	<axboe@...nel.dk>, <vgoyal@...hat.com>,
	<linux-kernel@...r.kernel.org>, <avanzini.arianna@...il.com>,
	<kernel-team@...com>, <hannes@...xchg.org>,
	<cgroups@...r.kernel.org>
Subject: Re: [PATCH 02/10] cgroup: introduce cgroup_subsys->legacy_name

> @@ -1448,7 +1451,8 @@ static int parse_cgroupfs_options(char *data, struct cgroup_sb_opts *opts)
>  		}
>  
>  		for_each_subsys(ss, i) {
> -			if (strcmp(token, ss->name))
> +			if (strcmp(token, ss->name) &&
> +			    strcmp(token, ss->legacy_name))
>  				continue;

As mounting with specified subsystems is only allowed in legacy hierarchy,
I think we should allow using leagcy name only?

>  			if (ss->disabled)
>  				continue;

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