Using kvfree_rcu() to free the old shrinker_maps instead of call_rcu().
We don't have to define a dedicated callback for call_rcu() anymore.
Signed-off-by: Yang Shi <shy828301@xxxxxxxxx>
---
mm/vmscan.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 2e753c2516fa..c2a309acd86b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -192,11 +192,6 @@ static inline int shrinker_map_size(int nr_items)
return (DIV_ROUND_UP(nr_items, BITS_PER_LONG) * sizeof(unsigned long));
}
-static void free_shrinker_map_rcu(struct rcu_head *head)
-{
- kvfree(container_of(head, struct memcg_shrinker_map, rcu));
-}
-
static int expand_one_shrinker_map(struct mem_cgroup *memcg,
int size, int old_size)
{
@@ -219,7 +214,7 @@ static int expand_one_shrinker_map(struct mem_cgroup *memcg,
memset((void *)new->map + old_size, 0, size - old_size);
rcu_assign_pointer(memcg->nodeinfo[nid]->shrinker_map, new);
- call_rcu(&old->rcu, free_shrinker_map_rcu);
+ kvfree_rcu(old);
}
return 0;
--
2.26.2
