linux-kernel - [PATCH RFC 05/28] mm: thp: replace folio_memcg() with folio_memcg

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Message-Id: <20250415024532.26632-6-songmuchun@bytedance.com>
Date: Tue, 15 Apr 2025 10:45:09 +0800
From: Muchun Song <songmuchun@...edance.com>
To: hannes@...xchg.org,
	mhocko@...nel.org,
	roman.gushchin@...ux.dev,
	shakeel.butt@...ux.dev,
	muchun.song@...ux.dev,
	akpm@...ux-foundation.org,
	david@...morbit.com,
	zhengqi.arch@...edance.com,
	yosry.ahmed@...ux.dev,
	nphamcs@...il.com,
	chengming.zhou@...ux.dev
Cc: linux-kernel@...r.kernel.org,
	cgroups@...r.kernel.org,
	linux-mm@...ck.org,
	hamzamahfooz@...ux.microsoft.com,
	apais@...ux.microsoft.com,
	Muchun Song <songmuchun@...edance.com>
Subject: [PATCH RFC 05/28] mm: thp: replace folio_memcg() with folio_memcg_charged()

folio_memcg_charged() is intended for use when the user is unconcerned
about the returned memcg pointer. It is more efficient than folio_memcg().
Therefore, replace folio_memcg() with folio_memcg_charged().

Signed-off-by: Muchun Song <songmuchun@...edance.com>
---
 mm/huge_memory.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index df66aa4bc4c2..a81e89987ca2 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -4048,7 +4048,7 @@ bool __folio_unqueue_deferred_split(struct folio *folio)
 	bool unqueued = false;
 
 	WARN_ON_ONCE(folio_ref_count(folio));
-	WARN_ON_ONCE(!mem_cgroup_disabled() && !folio_memcg(folio));
+	WARN_ON_ONCE(!mem_cgroup_disabled() && !folio_memcg_charged(folio));
 
 	ds_queue = get_deferred_split_queue(folio);
 	spin_lock_irqsave(&ds_queue->split_queue_lock, flags);
-- 
2.20.1