cgroup/rstat: check updated_next only for root

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After commit dc26532aed ("cgroup: rstat: punt root-level optimization to
individual controllers"), each rstat on updated_children list has its
->updated_next not NULL.

This means we can remove the check on ->updated_next, if we make sure
the subtree from @root is on list, which could be done by checking
updated_next for root.

tj: Coding style fixes.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

...

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Wei Yang 2021-12-25 00:09:32 +00:00 • committed by Tejun Heo

parent 0da41f7348

commit f5f60d235e

1 changed files with 23 additions and 24 deletions

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kernel/cgroup/rstat.c

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