tmakin/ack-tegra
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

cgroup: fix broken css_has_online_children()

Browse Source 
After running:

  # mount -t cgroup cpu xxx /cgroup && mkdir /cgroup/sub && \
    rmdir /cgroup/sub && umount /cgroup

I found the cgroup root still existed:

  # cat /proc/cgroups
  #subsys_name    hierarchy       num_cgroups     enabled
  cpuset  0       1       1
  cpu     1       1       1
  ...

It turned out css_has_online_children() is broken.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Sigend-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Li Zefan
2014-06-12 14:31:31 +08:00
committed by Tejun Heo
parent ebe06187bf
commit 99bae5f941
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
kernel/cgroup.c
+1 -1
View File
@@ -3328,7 +3328,7 @@ bool css_has_online_children(struct cgroup_subsys_state *css)
rcu_read_lock();
css_for_each_child(child, css) {
if (css->flags & CSS_ONLINE) {
if (child->flags & CSS_ONLINE) {
ret = true;
break;
}