[v10 PATCH 05/13] mm: vmscan: use kvfree_rcu instead of call_rcu
From: Yang Shi <hidden>
Date: 2021-03-11 19:10:14
Also in:
linux-mm, lkml
Subsystem:
memory management, memory management - mglru (multi-gen lru), memory management - reclaim, the rest · Maintainers:
Andrew Morton, Johannes Weiner, Linus Torvalds
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. Acked-by: Roman Gushchin <redacted> Acked-by: Kirill Tkhai <redacted> Reviewed-by: Shakeel Butt <redacted> Signed-off-by: Yang Shi <redacted> --- mm/vmscan.c | 7 +------ 1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 641a0b8b4ea9..bbe13985ae05 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) {
@@ -220,7 +215,7 @@ static int expand_one_shrinker_map(struct mem_cgroup *memcg, memset((void *)new->map + old_size, 0, size - old_size); rcu_assign_pointer(pn->shrinker_map, new); - call_rcu(&old->rcu, free_shrinker_map_rcu); + kvfree_rcu(old, rcu); } return 0;
--
2.26.2