[PATCH v6 16/16] mm: memcontrol: rename memcg_cache_id to memcg_kmem_id

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The memcg_cache_id() introduced by commit 2633d7a02823 ("slab/slub:
consider a memcg parameter in kmem_create_cache") is used to index
in the kmem_cache->memcg_params->memcg_caches array. Since
kmem_cache->memcg_params.memcg_caches has been removed by commit
9855609bde03 ("mm: memcg/slab: use a single set of kmem_caches for
all accounted allocations"). So the name does not need to reflect
cache related. Just rename it to memcg_kmem_id. And it can reflect
kmem related.

Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
---
 include/linux/memcontrol.h | 4 ++--
 mm/list_lru.c              | 8 ++++----
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 1fe44ec5aa03..fe44e4d36bd7 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1709,7 +1709,7 @@ static inline void memcg_kmem_uncharge_page(struct page *page, int order)
  * A helper for accessing memcg's kmem_id, used for getting
  * corresponding LRU lists.
  */
-static inline int memcg_cache_id(struct mem_cgroup *memcg)
+static inline int memcg_kmem_id(struct mem_cgroup *memcg)
 {
 	return memcg ? memcg->kmemcg_id : -1;
 }
@@ -1747,7 +1747,7 @@ static inline bool memcg_kmem_enabled(void)
 	return false;
 }
 
-static inline int memcg_cache_id(struct mem_cgroup *memcg)
+static inline int memcg_kmem_id(struct mem_cgroup *memcg)
 {
 	return -1;
 }
diff --git a/mm/list_lru.c b/mm/list_lru.c
index 38f711e9b56e..8b402373e965 100644
--- a/mm/list_lru.c
+++ b/mm/list_lru.c
@@ -75,7 +75,7 @@ list_lru_from_kmem(struct list_lru *lru, int nid, void *ptr,
 	if (!memcg)
 		goto out;
 
-	l = list_lru_from_memcg_idx(lru, nid, memcg_cache_id(memcg));
+	l = list_lru_from_memcg_idx(lru, nid, memcg_kmem_id(memcg));
 out:
 	if (memcg_ptr)
 		*memcg_ptr = memcg;
@@ -182,7 +182,7 @@ unsigned long list_lru_count_one(struct list_lru *lru,
 	long count;
 
 	rcu_read_lock();
-	l = list_lru_from_memcg_idx(lru, nid, memcg_cache_id(memcg));
+	l = list_lru_from_memcg_idx(lru, nid, memcg_kmem_id(memcg));
 	count = l ? READ_ONCE(l->nr_items) : 0;
 	rcu_read_unlock();
 
@@ -273,7 +273,7 @@ list_lru_walk_one(struct list_lru *lru, int nid, struct mem_cgroup *memcg,
 	unsigned long ret;
 
 	spin_lock(&nlru->lock);
-	ret = __list_lru_walk_one(lru, nid, memcg_cache_id(memcg), isolate,
+	ret = __list_lru_walk_one(lru, nid, memcg_kmem_id(memcg), isolate,
 				  cb_arg, nr_to_walk);
 	spin_unlock(&nlru->lock);
 	return ret;
@@ -289,7 +289,7 @@ list_lru_walk_one_irq(struct list_lru *lru, int nid, struct mem_cgroup *memcg,
 	unsigned long ret;
 
 	spin_lock_irq(&nlru->lock);
-	ret = __list_lru_walk_one(lru, nid, memcg_cache_id(memcg), isolate,
+	ret = __list_lru_walk_one(lru, nid, memcg_kmem_id(memcg), isolate,
 				  cb_arg, nr_to_walk);
 	spin_unlock_irq(&nlru->lock);
 	return ret;
-- 
2.11.0





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