cgroup: short-circuit cset_cgroup_from_root() on the default hierarchy

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Each css_set directly points to the default cgroup it belongs to, so
there's no reason to walk the cgrp_links list on the default
hierarchy.

Signed-off-by: Tejun Heo <tj@kernel.org>

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Tejun Heo 2017-08-02 15:39:38 -07:00

parent 5a621e6c95

commit 13d82fb77a

1 changed files with 2 additions and 0 deletions

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kernel/cgroup/cgroup.c

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