[PATCH v2 cgroup/for-3.11] cgroup: disallow rename(2) if sane_behavior
Li Zefan
lizefan at huawei.com
Tue Jun 18 09:11:52 UTC 2013
On 2013/6/15 2:18, Tejun Heo wrote:
> cgroup's rename(2) isn't a proper migration implementation - it can't
> move the cgroup to a different parent in the hierarchy. All it can do
> is swapping the name string for that cgroup. This isn't useful and
> can mislead users to think that cgroup supports proper cgroup-level
> migration. Disallow rename(2) if sane_behavior.
>
> v2: Fail with -EPERM instead of -EINVAL so that it matches the vfs
> return value when ->rename is not implemented as suggested by Li.
>
> Signed-off-by: Tejun Heo <tj at kernel.org>
> Cc: Li Zefan <lizefan at huawei.com>
> ---
> include/linux/cgroup.h | 2 ++
> kernel/cgroup.c | 7 +++++++
> 2 files changed, 9 insertions(+)
>
Acked-by: Li Zefan <lizefan at huawei.com>
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