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cgroup: Clean up css_set task traversal

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css_task_iter stores pointer to head of each iterable list, this dates
back to commit 0f0a2b4fa6 ("cgroup: reorganize css_task_iter") when we
did not store cur_cset. Let us utilize list heads directly in cur_cset
and streamline css_task_iter_advance_css_set a bit. This is no
intentional function change.

Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Michal Koutný 2020-01-24 12:40:16 +01:00 • committed by Tejun Heo
parent 9c974c7724
commit f43caa2adc
2 changed files with 28 additions and 36 deletions
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3
include/linux/cgroup.h
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@ -58,9 +58,6 @@ struct css_task_iter {
struct list_head *tcset_head;
struct list_head *task_pos;
struct list_head *tasks_head;
struct list_head *mg_tasks_head;
struct list_head *dying_tasks_head;
struct list_head *cur_tasks_head;
struct css_set *cur_cset;