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mm: memcontrol: remove page_memcg()

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The page_memcg() only called by mod_memcg_page_state(), so squash it to
cleanup page_memcg().

Link: https://lkml.kernel.org/r/20240524014950.187805-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Shakeel Butt <shakeel.butt@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Kefeng Wang 2024-05-24 09:49:50 +08:00 committed by Andrew Morton
parent 1e25501dbc
commit ffc3c8a631
2 changed files with 3 additions and 13 deletions
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14
include/linux/memcontrol.h
View File

@ -443,11 +443,6 @@ static inline struct mem_cgroup *folio_memcg(struct folio *folio)
return __folio_memcg(folio);
}
static inline struct mem_cgroup *page_memcg(struct page *page)
{
return folio_memcg(page_folio(page));
}
/**
* folio_memcg_rcu - Locklessly get the memory cgroup associated with a folio.
* @folio: Pointer to the folio.
@ -1014,7 +1009,7 @@ static inline void mod_memcg_page_state(struct page *page,
return;
rcu_read_lock();
memcg = page_memcg(page);
memcg = folio_memcg(page_folio(page));
if (memcg)
mod_memcg_state(memcg, idx, val);
rcu_read_unlock();
@ -1133,11 +1128,6 @@ static inline struct mem_cgroup *folio_memcg(struct folio *folio)
return NULL;
}
static inline struct mem_cgroup *page_memcg(struct page *page)
{
return NULL;
}
static inline struct mem_cgroup *folio_memcg_rcu(struct folio *folio)
{
WARN_ON_ONCE(!rcu_read_lock_held());
@ -1636,7 +1626,7 @@ static inline void unlock_page_lruvec_irqrestore(struct lruvec *lruvec,
spin_unlock_irqrestore(&lruvec->lru_lock, flags);
}
/* Test requires a stable page->memcg binding, see page_memcg() */
/* Test requires a stable folio->memcg binding, see folio_memcg() */
static inline bool folio_matches_lruvec(struct folio *folio,
struct lruvec *lruvec)
{

2
mm/memcontrol.c
View File

@ -3807,7 +3807,7 @@ void __memcg_slab_free_hook(struct kmem_cache *s, struct slab *slab,
#endif /* CONFIG_MEMCG_KMEM */
/*
* Because page_memcg(head) is not set on tails, set it now.
* Because folio_memcg(head) is not set on tails, set it now.
*/
void split_page_memcg(struct page *head, int old_order, int new_order)
{