diff options
| -rw-r--r-- | kernel/cgroup/cpuset.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index ff956ccbb6df..d43d25acc95a 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -1528,6 +1528,7 @@ static void cpuset_attach(struct cgroup_taskset *tset) cgroup_taskset_first(tset, &css); cs = css_cs(css); + cpus_read_lock(); mutex_lock(&cpuset_mutex); /* prepare for attach */ @@ -1583,6 +1584,7 @@ static void cpuset_attach(struct cgroup_taskset *tset) wake_up(&cpuset_attach_wq); mutex_unlock(&cpuset_mutex); + cpus_read_unlock(); } /* The various types of files and directories in a cpuset file system */ |