From: Yanfei Xu <yanfei.xu@xxxxxxxxxxxxx> It's no need to keep node_isset still in rcu_read region, just move it outside of the rcu_read region. Signed-off-by: Yanfei Xu <yanfei.xu@xxxxxxxxxxxxx> --- kernel/cgroup/cpuset.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/kernel/cgroup/cpuset.c b/kernel/cgroup/cpuset.c index 642415b8c3c9..51d51ed97deb 100644 --- a/kernel/cgroup/cpuset.c +++ b/kernel/cgroup/cpuset.c @@ -3443,9 +3443,9 @@ bool __cpuset_node_allowed(int node, gfp_t gfp_mask) rcu_read_lock(); cs = nearest_hardwall_ancestor(task_cs(current)); - allowed = node_isset(node, cs->mems_allowed); rcu_read_unlock(); + allowed = node_isset(node, cs->mems_allowed); spin_unlock_irqrestore(&callback_lock, flags); return allowed; } -- 2.18.2
