Thread (13 messages) 13 messages, 4 authors, 2024-09-10

Re: [PATCH v4] memcg: add charging of already allocated slab objects

From: Vlastimil Babka <hidden>
Date: 2024-09-10 09:19:31
Also in: cgroups, linux-mm, lkml

On 9/10/24 10:26, Paolo Abeni wrote:
On 9/5/24 19:34, Shakeel Butt wrote:
quoted
   * kmem_cache_alloc_node - Allocate an object on the specified node
   * @s: The cache to allocate from.
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 64d07b842e73..3c13ca8c11fb 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -715,6 +715,7 @@ struct sock *inet_csk_accept(struct sock *sk, struct proto_accept_arg *arg)
  	release_sock(sk);
  	if (newsk && mem_cgroup_sockets_enabled) {
  		int amt = 0;
+		gfp_t gfp = GFP_KERNEL | __GFP_NOFAIL;
  
  		/* atomically get the memory usage, set and charge the
  		 * newsk->sk_memcg.
@@ -731,8 +732,8 @@ struct sock *inet_csk_accept(struct sock *sk, struct proto_accept_arg *arg)
  		}
  
  		if (amt)
-			mem_cgroup_charge_skmem(newsk->sk_memcg, amt,
-						GFP_KERNEL | __GFP_NOFAIL);
+			mem_cgroup_charge_skmem(newsk->sk_memcg, amt, gfp);
+		kmem_cache_charge(newsk, gfp);
  
  		release_sock(newsk);
  	}
The networking bits looks sane to me - with a very minor nit about the 
reverse xmas tree order in variables declaration above.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Great, thanks, I will adjust the ordering.

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