cgroup: rstat: explicitly put loop variant in while
Instead of do while unconditionally, let's put the loop variant in while. 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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@ -124,12 +124,10 @@ static struct cgroup *cgroup_rstat_cpu_pop_updated(struct cgroup *pos,
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prstatc = cgroup_rstat_cpu(parent, cpu);
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nextp = &prstatc->updated_children;
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while (true) {
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while (*nextp != pos) {
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struct cgroup_rstat_cpu *nrstatc;
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nrstatc = cgroup_rstat_cpu(*nextp, cpu);
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if (*nextp == pos)
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break;
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WARN_ON_ONCE(*nextp == parent);
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nextp = &nrstatc->updated_next;
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}
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