cgroup: remove bogus comments in cgroup_diput()

Since commit 48ddbe1 ("cgroup: make css->refcnt clearing on cgroup removal optional"), each css holds a ref on cgroup's dentry, so cgroup_diput() won't be called until all css' refs go down to 0, which invalids the comments. Signed-off-by: Li Zefan <[email protected]> Signed-off-by: Tejun Heo <[email protected]>
bpopovych · Jan 24, 2013 · 9ed8a65 · 9ed8a65
1 parent be44562
commit 9ed8a65
Showing 1 changed file with 0 additions and 6 deletions.
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
@@ -899,12 +899,6 @@ static void cgroup_diput(struct dentry *dentry, struct inode *inode)
 		struct cgroup *cgrp = dentry->d_fsdata;
 
 		BUG_ON(!(cgroup_is_removed(cgrp)));
-		/* It's possible for external users to be holding css
-		 * reference counts on a cgroup; css_put() needs to
-		 * be able to access the cgroup after decrementing
-		 * the reference count in order to know if it needs to
-		 * queue the cgroup to be handled by the release
-		 * agent */
 		call_rcu(&cgrp->rcu_head, cgroup_free_rcu);
 	} else {
 		struct cfent *cfe = __d_cfe(dentry);