The patch titled
Subject: mm: memcontrol: remove page_memcg()
has been added to the -mm mm-unstable branch. Its filename is
mm-memcontrol-remove-page_memcg.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memcontrol-remove-page_memcg.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Subject: mm: memcontrol: remove page_memcg()
Date: Tue, 21 May 2024 21:15:56 +0800
The page_memcg() only called by mod_memcg_page_state(), so squash it to
cleanup page_memcg().
Link: https://lkml.kernel.org/r/20240521131556.142176-1-wangkefeng.wang@xxxxxxxxxx
Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Muchun Song <muchun.song@xxxxxxxxx>
Cc: Roman Gushchin <roman.gushchin@xxxxxxxxx>
Cc: Shakeel Butt <shakeel.butt@xxxxxxxxx>
Cc: Matthew Wilcox <willy@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memcontrol.h | 14 ++------------
mm/memcontrol.c | 2 +-
2 files changed, 3 insertions(+), 13 deletions(-)
--- a/include/linux/memcontrol.h~mm-memcontrol-remove-page_memcg
+++ a/include/linux/memcontrol.h
@@ -443,11 +443,6 @@ static inline struct mem_cgroup *folio_m
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(
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_m
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_ir
spin_unlock_irqrestore(&lruvec->lru_lock, flags);
}
-/* Test requires a stable page->memcg binding, see page_memcg() */
+/* Test requires a stable page->memcg binding, see folio_memcg() */
static inline bool folio_matches_lruvec(struct folio *folio,
struct lruvec *lruvec)
{
--- a/mm/memcontrol.c~mm-memcontrol-remove-page_memcg
+++ a/mm/memcontrol.c
@@ -3809,7 +3809,7 @@ void __memcg_slab_free_hook(struct kmem_
#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)
{
_
Patches currently in -mm which might be from wangkefeng.wang@xxxxxxxxxx are
mm-add-folio_alloc_mpol.patch
mm-mempolicy-use-folio_alloc_mpol_noprof-in-vma_alloc_folio_noprof.patch
mm-mempolicy-use-folio_alloc_mpol-in-alloc_migration_target_by_mpol.patch
mm-shmem-use-folio_alloc_mpol-in-shmem_alloc_folio.patch
mm-memcontrol-remove-page_memcg.patch
