On Thu, Nov 24, 2016 at 08:55:12PM -0800, Kirtika Ruchandani wrote:

'struct cpuset* cs' that is set but not used, was introduced in commit
1f7dd3e5a6e4 ("cgroup: fix handling of multi-destination migration from subtree_control enabling").
cpuset_cancel_attach() uses css_cs(css) instead. Compiling with W=1
gives the folllowing harmless warning, which we'd like to fix to
reduce the noise with W=1 in the kernel.

kernel/cpuset.c: In function ‘cpuset_cancel_attach’:
kernel/cpuset.c:1502:17: warning: variable ‘cs’ set but not used [-Wunused-but-set-variable]
  struct cpuset *cs;
                 ^

Fixes: 1f7dd3e5a6e4 ("cgroup: fix handling of multi-destination migration from subtree_control enabling").
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Kirtika Ruchandani <redacted>

Applied to cgroup/for-4.10.

Thanks.

-- 
tejun