cgroup: make hierarchy_id use cyclic idr

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We want to be able to lookup a hierarchy from its id and cyclic
allocation is a whole lot simpler with idr.  Convert to idr and use
idr_alloc_cyclc().

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

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Tejun Heo 2013-04-14 11:36:58 -07:00

parent 54e7b4eb15

commit 1a57423166

1 changed files with 8 additions and 20 deletions

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kernel/cgroup.c

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