diff options
| author | Li Zefan <lizefan@huawei.com> | 2013-02-18 14:13:35 +0800 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2013-02-18 09:31:35 -0800 |
| commit | f169007b2773f285e098cb84c74aac0154d65ff7 (patch) | |
| tree | 6b295320c25b9fe8c1e4e94fcc35570134ebb8be /arch/ia64/sn/kernel/io_common.c | |
| parent | 810cbee4fad570ff167132d4ecf247d99c48f71d (diff) | |
cgroup: fail if monitored file and event_control are in different cgroup
If we pass fd of memory.usage_in_bytes of cgroup A to cgroup.event_control
of cgroup B, then we won't get memory usage notification from A but B!
What's worse, if A and B are in different mount hierarchy, we'll end up
accessing NULL pointer!
Disallow this kind of invalid usage.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Acked-by: Kirill A. Shutemov <kirill@shutemov.name>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'arch/ia64/sn/kernel/io_common.c')
0 files changed, 0 insertions, 0 deletions