linux-kernel - Re: [PATCH RFC v2 1/4] cgroup: implement eventfd-based generic API for notifications

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Message-ID: <4B283F40.5080706@cn.fujitsu.com>
Date:	Wed, 16 Dec 2009 10:00:32 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	"Kirill A. Shutemov" <kirill@...temov.name>
CC:	containers@...ts.linux-foundation.org, linux-mm@...ck.org,
	Paul Menage <menage@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Balbir Singh <balbir@...ux.vnet.ibm.com>,
	Pavel Emelyanov <xemul@...nvz.org>,
	Dan Malek <dan@...eddedalley.com>,
	Vladislav Buzov <vbuzov@...eddedalley.com>,
	Daisuke Nishimura <nishimura@....nes.nec.co.jp>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC v2 1/4] cgroup: implement eventfd-based generic API
 for notifications

>> +/*
>> + * Check if a file is a control file
>> + */
>> +static inline struct cftype *__file_cft(struct file *file)
>> +{
>> +	if (file->f_dentry->d_inode->i_fop != &cgroup_file_operations)
>> +		return ERR_PTR(-EINVAL);
> 
> I don't think this check is needed.
> 

Sorry, please ignore this comment
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