cgroup: more naming cleanups

Constantly use @cset for css_set variables and use @cgrp as cgroup
variables.

Signed-off-by: Li Zefan <lizefan@huawei.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/kernel/cpuset.c b/kernel/cpuset.c
index 703bfd5..1b9c315 100644
--- a/kernel/cpuset.c
+++ b/kernel/cpuset.c
@@ -845,7 +845,7 @@
 {
 	struct cpuset *cpus_cs;
 
-	cpus_cs = effective_cpumask_cpuset(cgroup_cs(scan->cg));
+	cpus_cs = effective_cpumask_cpuset(cgroup_cs(scan->cgrp));
 	set_cpus_allowed_ptr(tsk, cpus_cs->cpus_allowed);
 }
 
@@ -866,7 +866,7 @@
 {
 	struct cgroup_scanner scan;
 
-	scan.cg = cs->css.cgroup;
+	scan.cgrp = cs->css.cgroup;
 	scan.test_task = NULL;
 	scan.process_task = cpuset_change_cpumask;
 	scan.heap = heap;
@@ -1062,7 +1062,7 @@
 static void cpuset_change_nodemask(struct task_struct *p,
 				   struct cgroup_scanner *scan)
 {
-	struct cpuset *cs = cgroup_cs(scan->cg);
+	struct cpuset *cs = cgroup_cs(scan->cgrp);
 	struct mm_struct *mm;
 	int migrate;
 	nodemask_t *newmems = scan->data;
@@ -1102,7 +1102,7 @@
 
 	guarantee_online_mems(mems_cs, &newmems);
 
-	scan.cg = cs->css.cgroup;
+	scan.cgrp = cs->css.cgroup;
 	scan.test_task = NULL;
 	scan.process_task = cpuset_change_nodemask;
 	scan.heap = heap;
@@ -1275,7 +1275,7 @@
 static void cpuset_change_flag(struct task_struct *tsk,
 				struct cgroup_scanner *scan)
 {
-	cpuset_update_task_spread_flag(cgroup_cs(scan->cg), tsk);
+	cpuset_update_task_spread_flag(cgroup_cs(scan->cgrp), tsk);
 }
 
 /*
@@ -1295,7 +1295,7 @@
 {
 	struct cgroup_scanner scan;
 
-	scan.cg = cs->css.cgroup;
+	scan.cgrp = cs->css.cgroup;
 	scan.test_task = NULL;
 	scan.process_task = cpuset_change_flag;
 	scan.heap = heap;
@@ -1971,7 +1971,7 @@
 	struct cpuset *cs = cgroup_cs(cgrp);
 	struct cpuset *parent = parent_cs(cs);
 	struct cpuset *tmp_cs;
-	struct cgroup *pos_cg;
+	struct cgroup *pos_cgrp;
 
 	if (!parent)
 		return 0;
@@ -2003,7 +2003,7 @@
 	 * (and likewise for mems) to the new cgroup.
 	 */
 	rcu_read_lock();
-	cpuset_for_each_child(tmp_cs, pos_cg, parent) {
+	cpuset_for_each_child(tmp_cs, pos_cgrp, parent) {
 		if (is_mem_exclusive(tmp_cs) || is_cpu_exclusive(tmp_cs)) {
 			rcu_read_unlock();
 			goto out_unlock;