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cgroup: remove bogus comments in cgroup_diput()

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Since commit 48ddbe1946
("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 <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Li Zefan 2013-01-24 14:32:02 +08:00 committed by Tejun Heo
parent be44562613
commit 9ed8a65970
1 changed files with 0 additions and 6 deletions
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6
kernel/cgroup.c
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@ -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);