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>
git-mirror · Nov 29, 2013 · b9f3cec · b9f3cec
1 parent ac1e69a
commit b9f3cec
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diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h
@@ -499,8 +499,6 @@ struct cftype {
 	 * kick type for multiplexing.
 	 */
 	int (*trigger)(struct cgroup_subsys_state *css, unsigned int event);
-
-	int (*release)(struct inode *inode, struct file *file);
 };
 
 /*

diff --git a/kernel/cgroup.c b/kernel/cgroup.c
@@ -2448,12 +2448,9 @@ static int cgroup_file_open(struct inode *inode, struct file *file)
 static int cgroup_file_release(struct inode *inode, struct file *file)
 {
 	struct cfent *cfe = __d_cfe(file->f_dentry);
-	struct cftype *cft = __d_cft(file->f_dentry);
 	struct cgroup_subsys_state *css = cfe->css;
 	int ret = 0;
 
-	if (cft->release)
-		ret = cft->release(inode, file);
 	if (css->ss)
 		css_put(css);
 	if (file->f_op == &cgroup_seqfile_operations)
-Original file line number
+Diff line change
@@ Expand Up / @@ -499,8 +499,6 @@ struct cftype { @@
     	 * kick type for multiplexing.
     	 */
     	int (*trigger)(struct cgroup_subsys_state *css, unsigned int event);
-    	int (*release)(struct inode *inode, struct file *file);
     };
     /*
@@ Expand Down @@