Re: [PATCH RFC v2 1/4] cgroup: implement eventfd-based generic APIfor notifications

[Li Zefan]

>> +/*
>> + * 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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