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| author | Li Zefan | 2013-03-01 08:06:07 +0100 |
|---|---|---|
| committer | Tejun Heo | 2013-03-04 19:04:54 +0100 |
| commit | f50daa704f36a6544a902c52b6cf37b0493dfc5d (patch) | |
| tree | 157d40fe53c6cde3aa2c2644b35dbe687e547dcc /include/linux/cgroup.h | |
| parent | cpuset: use cgroup_name() in cpuset_print_task_mems_allowed() (diff) | |
| download | kernel-qcow2-linux-f50daa704f36a6544a902c52b6cf37b0493dfc5d.tar.gz kernel-qcow2-linux-f50daa704f36a6544a902c52b6cf37b0493dfc5d.tar.xz kernel-qcow2-linux-f50daa704f36a6544a902c52b6cf37b0493dfc5d.zip | |
cgroup: no need to check css refs for release notification
We no longer fail rmdir() when there're still css refs, so we don't
need to check css refs in check_for_release().
This also voids a bug. cgroup_has_css_refs() accesses subsys[i]
without cgroup_mutex, so it can race with cgroup_unload_subsys().
cgroup_has_css_refs()
...
if (ss == NULL || ss->root != cgrp->root)
if ss pointers to net_cls_subsys, and cls_cgroup module is unloaded
right after the former check but before the latter, the memory that
net_cls_subsys resides has become invalid.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'include/linux/cgroup.h')
0 files changed, 0 insertions, 0 deletions