cgroup: Clean up css_set task traversal
authorMichal Koutný <mkoutny@suse.com>
Fri, 24 Jan 2020 11:40:16 +0000 (12:40 +0100)
committerTejun Heo <tj@kernel.org>
Wed, 12 Feb 2020 22:11:52 +0000 (17:11 -0500)
commitf43caa2adc96fc9c95fd77eef63cdff86ebf33cb
tree291d13068de68b5aada6a2da49b0612c44cc10be
parent9c974c77246460fa6a92c18554c3311c8c83c160
cgroup: Clean up css_set task traversal

css_task_iter stores pointer to head of each iterable list, this dates
back to commit 0f0a2b4fa621 ("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>
include/linux/cgroup.h
kernel/cgroup/cgroup.c