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SubjectRe: [PATCH for-4.20-fixes] cgroup: fix CSS_TASK_ITER_PROCS
On Thu, Nov 08, 2018 at 12:15:15PM -0800, Tejun Heo wrote:
> CSS_TASK_ITER_PROCS implements process-only iteration by making
> css_task_iter_advance() skip tasks which aren't threadgroup leaders;
> however, when an iteration is started css_task_iter_start() calls the
> inner helper function css_task_iter_advance_css_set() instead of
> css_task_iter_advance(). As the helper doesn't have the skip logic,
> when the first task to visit is a non-leader thread, it doesn't get
> skipped correctly as shown in the following example.

Applied to cgroup/for-4.20-fixes.



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