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| author | Li Zefan <lizefan@huawei.com> | 2014-03-28 15:18:27 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2014-03-29 09:15:53 -0400 |
| commit | e8604cb43690b781f9a7ad4a770f3e10259fe939 (patch) | |
| tree | 0feff5f9e9efe957a6f74a2cb23dc753428d87de /kernel/cgroup.c | |
| parent | 01a971406177c2ca9834be6914a67e20f463a3e6 (diff) | |
| download | op-kernel-dev-e8604cb43690b781f9a7ad4a770f3e10259fe939.zip op-kernel-dev-e8604cb43690b781f9a7ad4a770f3e10259fe939.tar.gz | |
cgroup: fix spurious lockdep warning in cgroup_exit()
cgroup_exit() is called in fork and exit path. If it's called in the
failure path during fork, PF_EXITING isn't set, and then lockdep will
complain.
Fix this by removing cgroup_exit() in that failure path. cgroup_fork()
does nothing that needs cleanup.
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel/cgroup.c')
| -rw-r--r-- | kernel/cgroup.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index e378cb2..60fd6f1 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -4431,8 +4431,7 @@ void cgroup_post_fork(struct task_struct *child) * notify_on_release(), then leave the task attached to the root cgroup in * each hierarchy for the remainder of its exit. No need to bother with * init_css_set refcnting. init_css_set never goes away and we can't race - * with migration path - either PF_EXITING is visible to migration path or - * @tsk never got on the tasklist. + * with migration path - PF_EXITING is visible to migration path. */ void cgroup_exit(struct task_struct *tsk, int run_callbacks) { |
