cpuset: Remove set but not used variable 'cs'

Fixes gcc '-Wunused-but-set-variable' warning:

kernel/cgroup/cpuset.c: In function 'cpuset_cancel_attach':
kernel/cgroup/cpuset.c:2167:17: warning:
 variable 'cs' set but not used [-Wunused-but-set-variable]

It never used since introduction in commit 1f7dd3e5a6e4 ("cgroup: fix handling
of multi-destination migration from subtree_control enabling")

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c
index 1151e93..f0decd8 100644 (file)
--- a/kernel/cgroup/cpuset.c
+++ b/kernel/cgroup/cpuset.c
@@ -2109,10 +2109,8 @@ out_unlock:
 static void cpuset_cancel_attach(struct cgroup_taskset *tset)
 {
        struct cgroup_subsys_state *css;
-       struct cpuset *cs;
 
        cgroup_taskset_first(tset, &css);
-       cs = css_cs(css);
 
        mutex_lock(&cpuset_mutex);
        css_cs(css)->attach_in_progress--;