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authorMonam Agarwal <monamagarwal123@gmail.com>2014-03-24 00:17:18 +0530
committerTejun Heo <tj@kernel.org>2014-03-24 08:48:02 -0400
commit01a971406177c2ca9834be6914a67e20f463a3e6 (patch)
tree0e1808318398da6ae3c13d6cb279487c318e9352
parente1b2dc176f2d5be7952c47a4e4e8f3b06a90db1c (diff)
cgroup: Use RCU_INIT_POINTER(x, NULL) in cgroup.c
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) The rcu_assign_pointer() ensures that the initialization of a structure is carried out before storing a pointer to that structure. And in the case of the NULL pointer, there is no structure to initialize. So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL) Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com> Signed-off-by: Tejun Heo <tj@kernel.org>
-rw-r--r--kernel/cgroup.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/cgroup.c b/kernel/cgroup.c
index 58c67b3060b5..e378cb2fac5e 100644
--- a/kernel/cgroup.c
+++ b/kernel/cgroup.c
@@ -3545,7 +3545,7 @@ static void css_release(struct percpu_ref *ref)
struct cgroup_subsys_state *css =
container_of(ref, struct cgroup_subsys_state, refcnt);
- rcu_assign_pointer(css->cgroup->subsys[css->ss->id], NULL);
+ RCU_INIT_POINTER(css->cgroup->subsys[css->ss->id], NULL);
call_rcu(&css->rcu_head, css_free_rcu_fn);
}