cgroup: remove cftype->release()
Now that pidlist files don't use cftype->release(), it doesn't have any user left. Remove it. Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Li Zefan <lizefan@huawei.com>
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@ -499,8 +499,6 @@ struct cftype {
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* kick type for multiplexing.
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*/
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int (*trigger)(struct cgroup_subsys_state *css, unsigned int event);
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int (*release)(struct inode *inode, struct file *file);
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};
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/*
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@ -2448,12 +2448,9 @@ static int cgroup_file_open(struct inode *inode, struct file *file)
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static int cgroup_file_release(struct inode *inode, struct file *file)
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{
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struct cfent *cfe = __d_cfe(file->f_dentry);
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struct cftype *cft = __d_cft(file->f_dentry);
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struct cgroup_subsys_state *css = cfe->css;
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int ret = 0;
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if (cft->release)
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ret = cft->release(inode, file);
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if (css->ss)
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css_put(css);
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if (file->f_op == &cgroup_seqfile_operations)
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