On Tue, Feb 16, 2021 at 4:13 PM Yang Shi [off-list ref] wrote:

The shrinker_info is dereferenced in a couple of places via rcu_dereference_protected
with different calling conventions, for example, using mem_cgroup_nodeinfo helper
or dereferencing memcg->nodeinfo[nid]->shrinker_info.  And the later patch
will add more dereference places.

So extract the dereference into a helper to make the code more readable.  No
functional change.

Acked-by: Roman Gushchin <redacted>
Acked-by: Kirill Tkhai <redacted>
Acked-by: Vlastimil Babka <redacted>
Signed-off-by: Yang Shi <redacted>

Reviewed-by: Shakeel Butt <redacted>