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| author |   Li Zefan <lizefan@huawei.com> | 2013-04-08 19:00:38 -0700 |
|---|---|---|
| committer |   Tejun Heo <tj@kernel.org> | 2013-04-10 11:07:08 -0700 |
| commit | 78574cf981cd3d9ae9f6adbd466a772310ec24ff (patch) | |
| tree | 50e9da6e2e201663a22e02240d927592e893780d /Documentation/cgroups/cgroups.txt | |
| parent | cgroup: make sure parent won't be destroyed before its children (diff) | |
| download | linux-dev-78574cf981cd3d9ae9f6adbd466a772310ec24ff.tar.xz linux-dev-78574cf981cd3d9ae9f6adbd466a772310ec24ff.zip | |
cgroup: implement cgroup_is_descendant()
A couple controllers want to determine whether two cgroups are in
ancestor/descendant relationship. As it's more likely that the
descendant is the primary subject of interest and there are other
operations focusing on the descendants, let's ask is_descendent rather
than is_ancestor.
Implementation is trivial as the previous patch guarantees that all
ancestors of a cgroup stay accessible as long as the cgroup is
accessible.
tj: Removed depth optimization, renamed from cgroup_is_ancestor(),
rewrote descriptions.
Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'Documentation/cgroups/cgroups.txt')
0 files changed, 0 insertions, 0 deletions