cgroup: make css_next_child() skip missing csses

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css_next_child() walks the children of the specified css.  It does
this by finding the next cgroup and then returning the requested css.
On the default unified hierarchy, a cgroup may not have a css
associated with it even if the hierarchy has the subsystem enabled.
This patch updates css_next_child() so that it skips children without
the requested css associated.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Li Zefan <lizefan@huawei.com>

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Tejun Heo 2014-04-23 11:13:15 -04:00

parent 2d8f243a5e

commit 3b281afbc3

1 changed files with 12 additions and 3 deletions

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kernel/cgroup.c

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