linux-kernel - [PATCH v13 034/137] mm/memcg: Remove 'page' parameter to mem_cgroup_charge

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Date:   Mon, 12 Jul 2021 04:05:18 +0100
From:   "Matthew Wilcox (Oracle)" <willy@...radead.org>
To:     linux-kernel@...r.kernel.org
Cc:     "Matthew Wilcox (Oracle)" <willy@...radead.org>,
        linux-mm@...ck.org, linux-fsdevel@...r.kernel.org,
        Christoph Hellwig <hch@....de>, Michal Hocko <mhocko@...e.com>,
        Johannes Weiner <hannes@...xchg.org>
Subject: [PATCH v13 034/137] mm/memcg: Remove 'page' parameter to mem_cgroup_charge_statistics()

The last use of 'page' was removed by commit 468c398233da ("mm:
memcontrol: switch to native NR_ANON_THPS counter"), so we can now remove
the parameter from the function.

Signed-off-by: Matthew Wilcox (Oracle) <willy@...radead.org>
Reviewed-by: Christoph Hellwig <hch@....de>
Acked-by: Michal Hocko <mhocko@...e.com>
Acked-by: Johannes Weiner <hannes@...xchg.org>
---
 mm/memcontrol.c | 11 +++++------
 1 file changed, 5 insertions(+), 6 deletions(-)

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index ae1f5d0cb581..ee892daecb8b 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -831,7 +831,6 @@ static unsigned long memcg_events_local(struct mem_cgroup *memcg, int event)
 }
 
 static void mem_cgroup_charge_statistics(struct mem_cgroup *memcg,
-					 struct page *page,
 					 int nr_pages)
 {
 	/* pagein of a big page is an event. So, ignore page size */
@@ -5692,9 +5691,9 @@ static int mem_cgroup_move_account(struct page *page,
 	ret = 0;
 
 	local_irq_disable();
-	mem_cgroup_charge_statistics(to, page, nr_pages);
+	mem_cgroup_charge_statistics(to, nr_pages);
 	memcg_check_events(to, page);
-	mem_cgroup_charge_statistics(from, page, -nr_pages);
+	mem_cgroup_charge_statistics(from, -nr_pages);
 	memcg_check_events(from, page);
 	local_irq_enable();
 out_unlock:
@@ -6715,7 +6714,7 @@ static int __mem_cgroup_charge(struct page *page, struct mem_cgroup *memcg,
 	commit_charge(page, memcg);
 
 	local_irq_disable();
-	mem_cgroup_charge_statistics(memcg, page, nr_pages);
+	mem_cgroup_charge_statistics(memcg, nr_pages);
 	memcg_check_events(memcg, page);
 	local_irq_enable();
 out:
@@ -7006,7 +7005,7 @@ void mem_cgroup_migrate(struct page *oldpage, struct page *newpage)
 	commit_charge(newpage, memcg);
 
 	local_irq_save(flags);
-	mem_cgroup_charge_statistics(memcg, newpage, nr_pages);
+	mem_cgroup_charge_statistics(memcg, nr_pages);
 	memcg_check_events(memcg, newpage);
 	local_irq_restore(flags);
 }
@@ -7236,7 +7235,7 @@ void mem_cgroup_swapout(struct page *page, swp_entry_t entry)
 	 * only synchronisation we have for updating the per-CPU variables.
 	 */
 	VM_BUG_ON(!irqs_disabled());
-	mem_cgroup_charge_statistics(memcg, page, -nr_entries);
+	mem_cgroup_charge_statistics(memcg, -nr_entries);
 	memcg_check_events(memcg, page);
 
 	css_put(&memcg->css);
-- 
2.30.2