From: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Subject: mm: memcontrol: rename memcg_cache_id to memcg_kmem_id
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.
Link: https://lkml.kernel.org/r/20220228122126.37293-17-songmuchun@xxxxxxxxxxxxx
Signed-off-by: Muchun Song <songmuchun@xxxxxxxxxxxxx>
Cc: Alex Shi <alexs@xxxxxxxxxx>
Cc: Anna Schumaker <Anna.Schumaker@xxxxxxxxxx>
Cc: Chao Yu <chao@xxxxxxxxxx>
Cc: Dave Chinner <david@xxxxxxxxxxxxx>
Cc: Fam Zheng <fam.zheng@xxxxxxxxxxxxx>
Cc: Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kari Argillander <kari.argillander@xxxxxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxxxx>
Cc: Qi Zheng <zhengqi.arch@xxxxxxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: Theodore Ts'o <tytso@xxxxxxx>
Cc: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
Cc: Vladimir Davydov <vdavydov.dev@xxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Wei Yang <richard.weiyang@xxxxxxxxx>
Cc: Xiongchun Duan <duanxiongchun@xxxxxxxxxxxxx>
Cc: Yang Shi <shy828301@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 4 ++--
mm/list_lru.c | 8 ++++----
2 files changed, 6 insertions(+), 6 deletions(-)
--- a/include/linux/memcontrol.h~mm-memcontrol-rename-memcg_cache_id-to-memcg_kmem_id
+++ a/include/linux/memcontrol.h
@@ -1708,7 +1708,7 @@ static inline void memcg_kmem_uncharge_p
* 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;
}
@@ -1746,7 +1746,7 @@ static inline bool memcg_kmem_enabled(vo
return false;
}
-static inline int memcg_cache_id(struct mem_cgroup *memcg)
+static inline int memcg_kmem_id(struct mem_cgroup *memcg)
{
return -1;
}
--- a/mm/list_lru.c~mm-memcontrol-rename-memcg_cache_id-to-memcg_kmem_id
+++ a/mm/list_lru.c
@@ -75,7 +75,7 @@ list_lru_from_kmem(struct list_lru *lru,
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
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,
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 *l
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;
_
