new_ss_mask is always not less than cur_ss_mask. We don not need to update it with cur_ss_mask's value.
Signed-off-by: Peng Wang <[email protected]> --- kernel/cgroup/cgroup.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 300b0c416341..2b8c39dabd26 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -1520,7 +1520,7 @@ static umode_t cgroup_file_mode(const struct cftype *cft) */ static u16 cgroup_calc_subtree_ss_mask(u16 subtree_control, u16 this_ss_mask) { - u16 cur_ss_mask = subtree_control; + u16 cur_ss_mask = subtree_control, new_ss_mask; struct cgroup_subsys *ss; int ssid; @@ -1528,9 +1528,8 @@ static u16 cgroup_calc_subtree_ss_mask(u16 subtree_control, u16 this_ss_mask) cur_ss_mask |= cgrp_dfl_implicit_ss_mask; + new_ss_mask = cur_ss_mask; while (true) { - u16 new_ss_mask = cur_ss_mask; - do_each_subsys_mask(ss, ssid, cur_ss_mask) { new_ss_mask |= ss->depends_on; } while_each_subsys_mask(); -- 2.19.1
