diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-04-26 20:58:03 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-04-26 20:58:03 +0200 |
| commit | 7ef70e48735e17d2be5c8e8f85052842b16b923a (patch) | |
| tree | ed5a6f181441dc96dbda4fcea6e14632d0231d93 /kernel | |
| parent | cgroup: fix use-after-free when umounting cgroupfs (diff) | |
| download | linux-7ef70e48735e17d2be5c8e8f85052842b16b923a.tar.xz linux-7ef70e48735e17d2be5c8e8f85052842b16b923a.zip | |
cgroup: restore the call to eventfd->poll()
I mistakenly removed the call to eventfd->poll() while I was actually
intending to remove the return value...
Calling evenfd->poll() will hook cgroup_event_wake() to the poll
waitqueue, which will be called to unregister eventfd when rmdir a
cgroup or close eventfd.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/cgroup.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c index bd4de465d5a9..3f14a1310d23 100644 --- a/kernel/cgroup.c +++ b/kernel/cgroup.c @@ -3882,6 +3882,8 @@ static int cgroup_write_event_control(struct cgroup *cgrp, struct cftype *cft, if (ret) goto fail; + efile->f_op->poll(efile, &event->pt); + /* * Events should be removed after rmdir of cgroup directory, but before * destroying subsystem state objects. Let's take reference to cgroup |