[PATCH] cpuset: Move node_isset() outside of the rcu_read region

[yanfei.xu]

From: Yanfei Xu <yanfei...@windriver.com>

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...@windriver.com>
---
 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