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From:   Muchun Song <songmuchun@bytedance.com>
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Cc:     linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
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        zhengqi.arch@bytedance.com, duanxiongchun@bytedance.com,
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        Muchun Song <songmuchun@bytedance.com>
Subject: [PATCH v6 07/16] mm: dcache: use kmem_cache_alloc_lru() to allocate dentry
Date:   Mon, 28 Feb 2022 20:21:17 +0800
Message-Id: <20220228122126.37293-8-songmuchun@bytedance.com>
In-Reply-To: <20220228122126.37293-1-songmuchun@bytedance.com>
References: <20220228122126.37293-1-songmuchun@bytedance.com>
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Like inode cache, the dentry will also be added to its memcg list_lru.
So replace kmem_cache_alloc() with kmem_cache_alloc_lru() to allocate
dentry.

Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Roman Gushchin <roman.gushchin@linux.dev>
---
 fs/dcache.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/dcache.c b/fs/dcache.c
index c84269c6e8bf..93f4f5ee07bf 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1766,7 +1766,8 @@ static struct dentry *__d_alloc(struct super_block *sb, const struct qstr *name)
 	char *dname;
 	int err;
 
-	dentry = kmem_cache_alloc(dentry_cache, GFP_KERNEL);
+	dentry = kmem_cache_alloc_lru(dentry_cache, &sb->s_dentry_lru,
+				      GFP_KERNEL);
 	if (!dentry)
 		return NULL;
 
-- 
2.11.0