cgroup: replace explicit ss_mask checking with for_each_subsys_which

Replace the explicit checking against ss_masks inside a for_each_subsys
block with for_each_subsys_which(..., ss_mask), to take advantage of the
more readable (and more efficient) macro.

Signed-off-by: Aleksa Sarai <cyphar@cyphar.com>
This commit is contained in:
Aleksa Sarai 2015-06-06 10:02:15 +10:00 • committed by Tejun Heo
commit a966a4edf8