Tejun Heo
ccf78df1fc
unit_has_mask_realized() determines whether the specified unit has its cgroups set up properly given the desired target_mask; however, on the unified hierarchy, controllers need to be enabled explicitly for children and the mask of enabled controllers can deviate from target_mask. Only considering target_mask in unit_has_mask_realized() can lead to false positives and skipping enabling the requested controllers. This patch adds unit->cgroup_enabled_mask to track which controllers are enabled and updates unit_has_mask_realized() to also consider enable_mask. Signed-off-by: Tejun Heo <htejun@fb.com>
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