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cgroup: cosmetic update to cgroup_taskset_add()

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cgroup_taskset_add() was using list_add_tail() when for source csets
but list_move_tail() for destination.  As the operations are gated by
list_empty() test, list_move_tail() is equivalent to list_add_tail()
here.  Use list_add_tail() too for destination csets too.

This doesn't cause any functional changes.

Signed-off-by: Tejun Heo <tj@kernel.org>
Acked-by: Zefan Li <lizefan@huawei.com>
This commit is contained in:
Tejun Heo 2017-01-15 19:03:40 -05:00
parent 20c56e595c
commit d8ebf5191d
1 changed files with 2 additions and 2 deletions
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4
kernel/cgroup/cgroup.c
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@ -1980,8 +1980,8 @@ static void cgroup_taskset_add(struct task_struct *task,
if (list_empty(&cset->mg_node))
list_add_tail(&cset->mg_node, &tset->src_csets);
if (list_empty(&cset->mg_dst_cset->mg_node))
list_move_tail(&cset->mg_dst_cset->mg_node,
&tset->dst_csets);
list_add_tail(&cset->mg_dst_cset->mg_node,
&tset->dst_csets);
}
/**