[PATCH v3 12/25] mm/memcg: Add mem_cgroup_folio_lruvec

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mem_cgroup_page_lruvec() already expects a head page, so this will add some
typesafety once we can remove mem_cgroup_page_lruvec().

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
---
 include/linux/memcontrol.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 89aaa22506e6..ec7ecfc0e47b 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -1454,6 +1454,12 @@ static inline void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
 }
 #endif /* CONFIG_MEMCG */
 
+static inline struct lruvec *mem_cgroup_folio_lruvec(struct folio *folio,
+						    struct pglist_data *pgdat)
+{
+	return mem_cgroup_page_lruvec(&folio->page, pgdat);
+}
+
 static inline void __inc_lruvec_kmem_state(void *p, enum node_stat_item idx)
 {
 	__mod_lruvec_kmem_state(p, idx, 1);
-- 
2.29.2




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