mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec

All the callers of mem_cgroup_page_lruvec() just pass page_pgdat(page) as
the 2nd parameter to it (except isolate_migratepages_block()).  But for
isolate_migratepages_block(), the page_pgdat(page) is also equal to the
local variable of @pgdat.  So mem_cgroup_page_lruvec() do not need the
pgdat parameter.  Just remove it to simplify the code.

Link: https://lkml.kernel.org/r/20210417043538.9793-4-songmuchun@bytedance.com
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 5 insertions, 5 deletions

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index c193be760709..f2a5aaba3577 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -743,13 +743,12 @@ out:
 /**
  * mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page
  * @page: the page
- * @pgdat: pgdat of the page
  *
  * This function relies on page->mem_cgroup being stable.
  */
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
-						struct pglist_data *pgdat)
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
 {
+	pg_data_t *pgdat = page_pgdat(page);
 	struct mem_cgroup *memcg = page_memcg(page);
 
 	VM_WARN_ON_ONCE_PAGE(!memcg && !mem_cgroup_disabled(), page);
@@ -1221,9 +1220,10 @@ static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg,
 	return &pgdat->__lruvec;
 }
 
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
-						    struct pglist_data *pgdat)
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
 {
+	pg_data_t *pgdat = page_pgdat(page);
+
 	return &pgdat->__lruvec;
 }