[PATCH] bpf: cgroup: annotate pointers in struct cgroup_bpf with __rcu

The member 'effective' in 'struct cgroup_bpf' is protected by RCU.
Annotate it accordingly to squelch a sparse warning.

Signed-off-by: Daniel Mack <daniel@zonque.org>
---
 include/linux/bpf-cgroup.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index 7b6e5d1..92bc89a 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h

@@ -20,7 +20,7 @@ struct cgroup_bpf {
 	 * when this cgroup is accessed.
 	 */
 	struct bpf_prog *prog[MAX_BPF_ATTACH_TYPE];
-	struct bpf_prog *effective[MAX_BPF_ATTACH_TYPE];
+	struct bpf_prog __rcu *effective[MAX_BPF_ATTACH_TYPE];
 };
 
 void cgroup_bpf_put(struct cgroup *cgrp);

-- 
2.9.3

On Thu, Dec 15, 2016 at 10:53:21AM +0100, Daniel Mack wrote:

The member 'effective' in 'struct cgroup_bpf' is protected by RCU.
Annotate it accordingly to squelch a sparse warning.

Signed-off-by: Daniel Mack <daniel@zonque.org>

Acked-by: Alexei Starovoitov <ast@kernel.org>

was only wondering whether this is really needed for net or can wait till net-next.

From: Daniel Mack <daniel@zonque.org>
Date: Thu, 15 Dec 2016 10:53:21 +0100

The member 'effective' in 'struct cgroup_bpf' is protected by RCU.
Annotate it accordingly to squelch a sparse warning.

Signed-off-by: Daniel Mack <daniel@zonque.org>

Applied.