Unverified Commit e1d1636c authored by openeuler-ci-bot's avatar openeuler-ci-bot Committed by Gitee
Browse files

!1706 cgroup: fix missing cpus_read_{lock,unlock}() in cgroup_transfer_tasks() 

Merge Pull Request from: @ci-robot 
 
PR sync from: Cai Xinchen <caixinchen1@huawei.com>
https://mailweb.openeuler.org/hyperkitty/list/kernel@openeuler.org/message/R5VDLUCTJIKFKEHD6B6QZQN4TXCBED4Q/ 
 
https://gitee.com/openeuler/kernel/issues/I7RPDX 
 
Link:https://gitee.com/openeuler/kernel/pulls/1706

 

Reviewed-by: default avatarLiu YongQiang <liuyongqiang13@huawei.com>
Signed-off-by: default avatarZhang Changzhong <zhangchangzhong@huawei.com>
parents fa4e0344 5cc47514

kernel/cgroup/cgroup-v1.c

+2 −2
Original line number Diff line number Diff line
@@ -105,7 +105,7 @@ int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from) 


	mutex_lock(&cgroup_mutex);



	percpu_down_write(&cgroup_threadgroup_rwsem);

	cgroup_attach_lock();



	/* all tasks in @from are being moved, all csets are source */

	spin_lock_irq(&css_set_lock);
@@ -141,7 +141,7 @@ int cgroup_transfer_tasks(struct cgroup *to, struct cgroup *from) 
	} while (task && !ret);

out_err:

	cgroup_migrate_finish(&mgctx);

	percpu_up_write(&cgroup_threadgroup_rwsem);

	cgroup_attach_unlock();

	mutex_unlock(&cgroup_mutex);

	return ret;

}