Thread (26 messages) 26 messages, 2 authors, 2021-06-16
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[PATCH v2 11/21] mm: dcache: use kmem_cache_alloc_lru() to allocate dentry

From: Muchun Song <hidden>
Date: 2021-05-27 06:26:03
Also in: linux-fsdevel, linux-nfs, lkml
Subsystem: filesystems (vfs and infrastructure), the rest · Maintainers: Alexander Viro, Christian Brauner, Linus Torvalds

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 <redacted>
---
 fs/dcache.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/fs/dcache.c b/fs/dcache.c
index cf871a81f4fd..36d4806d7284 100644
--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -1741,7 +1741,8 @@ 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

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