383 } mc = {  variable
384 	.lock = __SPIN_LOCK_UNLOCKED(mc.lock),
385 	.waitq = __WAIT_QUEUE_HEAD_INITIALIZER(mc.waitq),
1401 	spin_lock(&mc.lock);  in mem_cgroup_under_move()
1402 	from = mc.from;  in mem_cgroup_under_move()
1403 	to = mc.to;  in mem_cgroup_under_move()
1410 	spin_unlock(&mc.lock);  in mem_cgroup_under_move()
1416 	if (mc.moving_task && current != mc.moving_task) {  in mem_cgroup_wait_acct_move()
1419 			prepare_to_wait(&mc.waitq, &wait, TASK_INTERRUPTIBLE);  in mem_cgroup_wait_acct_move()
1421 			if (mc.moving_task)  in mem_cgroup_wait_acct_move()
1423 			finish_wait(&mc.waitq, &wait);  in mem_cgroup_wait_acct_move()
4593 	ret = try_charge(mc.to, GFP_KERNEL & ~__GFP_WAIT, count);  in mem_cgroup_do_precharge()
4595 		mc.precharge += count;  in mem_cgroup_do_precharge()
4605 		ret = try_charge(mc.to, GFP_KERNEL & ~__GFP_NORETRY, 1);  in mem_cgroup_do_precharge()
4616 		mc.precharge++;  in mem_cgroup_do_precharge()
4659 		if (!(mc.flags & MOVE_ANON))  in mc_handle_present_pte()
4662 		if (!(mc.flags & MOVE_FILE))  in mc_handle_present_pte()
4678 	if (!(mc.flags & MOVE_ANON) || non_swap_entry(ent))  in mc_handle_swap_pte()
4707 	if (!(mc.flags & MOVE_FILE))  in mc_handle_file_pte()
4840 		if (page->mem_cgroup == mc.from) {  in get_mctgt_type()
4850 	    mem_cgroup_id(mc.from) == lookup_swap_cgroup_id(ent)) {  in get_mctgt_type()
4872 	if (!(mc.flags & MOVE_ANON))  in get_mctgt_type_thp()
4874 	if (page->mem_cgroup == mc.from) {  in get_mctgt_type_thp()
4901 			mc.precharge += HPAGE_PMD_NR;  in mem_cgroup_count_precharge_pte_range()
4911 			mc.precharge++;	/* increment precharge temporarily */  in mem_cgroup_count_precharge_pte_range()
4930 	precharge = mc.precharge;  in mem_cgroup_count_precharge()
4931 	mc.precharge = 0;  in mem_cgroup_count_precharge()
4940 	VM_BUG_ON(mc.moving_task);  in mem_cgroup_precharge_mc()
4941 	mc.moving_task = current;  in mem_cgroup_precharge_mc()
4948 	struct mem_cgroup *from = mc.from;  in __mem_cgroup_clear_mc()
4949 	struct mem_cgroup *to = mc.to;  in __mem_cgroup_clear_mc()
4952 	if (mc.precharge) {  in __mem_cgroup_clear_mc()
4953 		cancel_charge(mc.to, mc.precharge);  in __mem_cgroup_clear_mc()
4954 		mc.precharge = 0;  in __mem_cgroup_clear_mc()
4960 	if (mc.moved_charge) {  in __mem_cgroup_clear_mc()
4961 		cancel_charge(mc.from, mc.moved_charge);  in __mem_cgroup_clear_mc()
4962 		mc.moved_charge = 0;  in __mem_cgroup_clear_mc()
4965 	if (mc.moved_swap) {  in __mem_cgroup_clear_mc()
4967 		if (!mem_cgroup_is_root(mc.from))  in __mem_cgroup_clear_mc()
4968 			page_counter_uncharge(&mc.from->memsw, mc.moved_swap);  in __mem_cgroup_clear_mc()
4974 		if (!mem_cgroup_is_root(mc.to))  in __mem_cgroup_clear_mc()
4975 			page_counter_uncharge(&mc.to->memory, mc.moved_swap);  in __mem_cgroup_clear_mc()
4977 		css_put_many(&mc.from->css, mc.moved_swap);  in __mem_cgroup_clear_mc()
4980 		mc.moved_swap = 0;  in __mem_cgroup_clear_mc()
4984 	wake_up_all(&mc.waitq);  in __mem_cgroup_clear_mc()
4993 	mc.moving_task = NULL;  in mem_cgroup_clear_mc()
4995 	spin_lock(&mc.lock);  in mem_cgroup_clear_mc()
4996 	mc.from = NULL;  in mem_cgroup_clear_mc()
4997 	mc.to = NULL;  in mem_cgroup_clear_mc()
4998 	spin_unlock(&mc.lock);  in mem_cgroup_clear_mc()
5026 			VM_BUG_ON(mc.from);  in mem_cgroup_can_attach()
5027 			VM_BUG_ON(mc.to);  in mem_cgroup_can_attach()
5028 			VM_BUG_ON(mc.precharge);  in mem_cgroup_can_attach()
5029 			VM_BUG_ON(mc.moved_charge);  in mem_cgroup_can_attach()
5030 			VM_BUG_ON(mc.moved_swap);  in mem_cgroup_can_attach()
5032 			spin_lock(&mc.lock);  in mem_cgroup_can_attach()
5033 			mc.from = from;  in mem_cgroup_can_attach()
5034 			mc.to = memcg;  in mem_cgroup_can_attach()
5035 			mc.flags = move_flags;  in mem_cgroup_can_attach()
5036 			spin_unlock(&mc.lock);  in mem_cgroup_can_attach()
5051 	if (mc.to)  in mem_cgroup_cancel_attach()
5078 		if (mc.precharge < HPAGE_PMD_NR) {  in mem_cgroup_move_charge_pte_range()
5087 							     mc.from, mc.to)) {  in mem_cgroup_move_charge_pte_range()
5088 					mc.precharge -= HPAGE_PMD_NR;  in mem_cgroup_move_charge_pte_range()
5089 					mc.moved_charge += HPAGE_PMD_NR;  in mem_cgroup_move_charge_pte_range()
5107 		if (!mc.precharge)  in mem_cgroup_move_charge_pte_range()
5115 			if (!mem_cgroup_move_account(page, 1, mc.from, mc.to)) {  in mem_cgroup_move_charge_pte_range()
5116 				mc.precharge--;  in mem_cgroup_move_charge_pte_range()
5118 				mc.moved_charge++;  in mem_cgroup_move_charge_pte_range()
5126 			if (!mem_cgroup_move_swap_account(ent, mc.from, mc.to)) {  in mem_cgroup_move_charge_pte_range()
5127 				mc.precharge--;  in mem_cgroup_move_charge_pte_range()
5129 				mc.moved_swap++;  in mem_cgroup_move_charge_pte_range()
5167 	atomic_inc(&mc.from->moving_account);  in mem_cgroup_move_charge()
5188 	atomic_dec(&mc.from->moving_account);  in mem_cgroup_move_charge()
5198 		if (mc.to)  in mem_cgroup_move_task()
5202 	if (mc.to)  in mem_cgroup_move_task()