[PATCH 08/17] mm: list_lru: remove memcg_aware from struct list_lru
From: Muchun Song <hidden>
Date: 2021-05-11 10:52:16
Also in:
linux-fsdevel, linux-nfs, lkml
Subsystem:
memory management, shrinker, the rest · Maintainers:
Andrew Morton, Dave Chinner, Linus Torvalds
We can use ->memcg_lrus to indicate if the lru is memcg aware. So ->memcg_aware is redundant and remove it. Signed-off-by: Muchun Song <redacted> --- include/linux/list_lru.h | 1 - mm/list_lru.c | 9 +++++---- 2 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/include/linux/list_lru.h b/include/linux/list_lru.h
index 228bef9fdd0b..00a13ad6128a 100644
--- a/include/linux/list_lru.h
+++ b/include/linux/list_lru.h@@ -55,7 +55,6 @@ struct list_lru { #ifdef CONFIG_MEMCG_KMEM struct list_head list; int shrinker_id; - bool memcg_aware; /* for cgroup aware lrus points to per cgroup lists, otherwise NULL */ struct list_lru_memcg __rcu *memcg_lrus; #endif
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 57c55916cc1c..cf17ff5a5940 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c@@ -20,7 +20,7 @@ static DEFINE_MUTEX(list_lrus_mutex); static inline bool list_lru_memcg_aware(struct list_lru *lru) { - return lru->memcg_aware; + return !!lru->memcg_lrus; } static void list_lru_register(struct list_lru *lru)
@@ -73,7 +73,7 @@ list_lru_from_kmem(struct list_lru *lru, int nid, void *ptr, struct list_lru_one *l = &nlru->lru; struct mem_cgroup *memcg = NULL; - if (!lru->memcg_lrus) + if (!list_lru_memcg_aware(lru)) goto out; memcg = mem_cgroup_from_obj(ptr);
@@ -368,9 +368,10 @@ static int memcg_init_list_lru(struct list_lru *lru, bool memcg_aware) struct list_lru_memcg *memcg_lrus; int size = memcg_nr_cache_ids; - lru->memcg_aware = memcg_aware; - if (!memcg_aware) + if (!memcg_aware) { + lru->memcg_lrus = NULL; return 0; + } memcg_lrus = kvmalloc(sizeof(*memcg_lrus) + size * sizeof(memcg_lrus->lrus[0]), GFP_KERNEL);
--
2.11.0