diff mbox series

[v2,6/6] mm/memcontrol: Remove __mod_lruvec_page_state()

Message ID 20231228085748.1083901-7-willy@infradead.org (mailing list archive)
State New
Headers show
Series Remove some lruvec page accounting functions | expand

Commit Message

Matthew Wilcox Dec. 28, 2023, 8:57 a.m. UTC 
There are no more callers of __mod_lruvec_page_state(), so convert
the implementation to __lruvec_stat_mod_folio(), removing two calls to
compound_head() (one explicit, one hidden inside page_memcg()).

Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
---
 include/linux/vmstat.h | 36 ++++++++++++++++++------------------
 mm/memcontrol.c        |  9 ++++-----
 2 files changed, 22 insertions(+), 23 deletions(-)

Comments

Zi Yan Dec. 28, 2023, 9:24 p.m. UTC | #1 
On 28 Dec 2023, at 3:57, Matthew Wilcox (Oracle) wrote:

> There are no more callers of __mod_lruvec_page_state(), so convert
> the implementation to __lruvec_stat_mod_folio(), removing two calls to
> compound_head() (one explicit, one hidden inside page_memcg()).
>
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
> ---
>  include/linux/vmstat.h | 36 ++++++++++++++++++------------------
>  mm/memcontrol.c        |  9 ++++-----
>  2 files changed, 22 insertions(+), 23 deletions(-)

LGTM. Reviewed-by: Zi Yan <ziy@nvidia.com>

--
Best Regards,
Yan, Zi
Shakeel Butt Dec. 28, 2023, 10:31 p.m. UTC | #2 
On Thu, Dec 28, 2023 at 08:57:48AM +0000, Matthew Wilcox (Oracle) wrote:
> There are no more callers of __mod_lruvec_page_state(), so convert
> the implementation to __lruvec_stat_mod_folio(), removing two calls to
> compound_head() (one explicit, one hidden inside page_memcg()).
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Acked-by: Shakeel Butt <shakeelb@google.com>
Vlastimil Babka Jan. 2, 2024, 11:56 a.m. UTC | #3 
On 12/28/23 09:57, Matthew Wilcox (Oracle) wrote:
> There are no more callers of __mod_lruvec_page_state(), so convert
> the implementation to __lruvec_stat_mod_folio(), removing two calls to
> compound_head() (one explicit, one hidden inside page_memcg()).
> 
> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>

Reviewed-by: Vlastimil Babka <vbabka@suse.cz>
diff mbox series

Patch

diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index 147ae73e0ee7..343906a98d6e 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -556,19 +556,25 @@  static inline void mod_lruvec_state(struct lruvec *lruvec,
 	local_irq_restore(flags);
 }
 
-void __mod_lruvec_page_state(struct page *page,
+void __lruvec_stat_mod_folio(struct folio *folio,
 			     enum node_stat_item idx, int val);
 
-static inline void mod_lruvec_page_state(struct page *page,
+static inline void lruvec_stat_mod_folio(struct folio *folio,
 					 enum node_stat_item idx, int val)
 {
 	unsigned long flags;
 
 	local_irq_save(flags);
-	__mod_lruvec_page_state(page, idx, val);
+	__lruvec_stat_mod_folio(folio, idx, val);
 	local_irq_restore(flags);
 }
 
+static inline void mod_lruvec_page_state(struct page *page,
+					 enum node_stat_item idx, int val)
+{
+	lruvec_stat_mod_folio(page_folio(page), idx, val);
+}
+
 #else
 
 static inline void __mod_lruvec_state(struct lruvec *lruvec,
@@ -583,10 +589,16 @@  static inline void mod_lruvec_state(struct lruvec *lruvec,
 	mod_node_page_state(lruvec_pgdat(lruvec), idx, val);
 }
 
-static inline void __mod_lruvec_page_state(struct page *page,
-					   enum node_stat_item idx, int val)
+static inline void __lruvec_stat_mod_folio(struct folio *folio,
+					 enum node_stat_item idx, int val)
 {
-	__mod_node_page_state(page_pgdat(page), idx, val);
+	__mod_node_page_state(folio_pgdat(folio), idx, val);
+}
+
+static inline void lruvec_stat_mod_folio(struct folio *folio,
+					 enum node_stat_item idx, int val)
+{
+	mod_node_page_state(folio_pgdat(folio), idx, val);
 }
 
 static inline void mod_lruvec_page_state(struct page *page,
@@ -597,12 +609,6 @@  static inline void mod_lruvec_page_state(struct page *page,
 
 #endif /* CONFIG_MEMCG */
 
-static inline void __lruvec_stat_mod_folio(struct folio *folio,
-					   enum node_stat_item idx, int val)
-{
-	__mod_lruvec_page_state(&folio->page, idx, val);
-}
-
 static inline void __lruvec_stat_add_folio(struct folio *folio,
 					   enum node_stat_item idx)
 {
@@ -615,12 +621,6 @@  static inline void __lruvec_stat_sub_folio(struct folio *folio,
 	__lruvec_stat_mod_folio(folio, idx, -folio_nr_pages(folio));
 }
 
-static inline void lruvec_stat_mod_folio(struct folio *folio,
-					 enum node_stat_item idx, int val)
-{
-	mod_lruvec_page_state(&folio->page, idx, val);
-}
-
 static inline void lruvec_stat_add_folio(struct folio *folio,
 					 enum node_stat_item idx)
 {
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 36bb18d7b397..7a759554bec6 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -891,16 +891,15 @@  void __mod_lruvec_state(struct lruvec *lruvec, enum node_stat_item idx,
 		__mod_memcg_lruvec_state(lruvec, idx, val);
 }
 
-void __mod_lruvec_page_state(struct page *page, enum node_stat_item idx,
+void __lruvec_stat_mod_folio(struct folio *folio, enum node_stat_item idx,
 			     int val)
 {
-	struct page *head = compound_head(page); /* rmap on tail pages */
 	struct mem_cgroup *memcg;
-	pg_data_t *pgdat = page_pgdat(page);
+	pg_data_t *pgdat = folio_pgdat(folio);
 	struct lruvec *lruvec;
 
 	rcu_read_lock();
-	memcg = page_memcg(head);
+	memcg = folio_memcg(folio);
 	/* Untracked pages have no memcg, no lruvec. Update only the node */
 	if (!memcg) {
 		rcu_read_unlock();
@@ -912,7 +911,7 @@  void __mod_lruvec_page_state(struct page *page, enum node_stat_item idx,
 	__mod_lruvec_state(lruvec, idx, val);
 	rcu_read_unlock();
 }
-EXPORT_SYMBOL(__mod_lruvec_page_state);
+EXPORT_SYMBOL(__lruvec_stat_mod_folio);
 
 void __mod_lruvec_kmem_state(void *p, enum node_stat_item idx, int val)
 {