From 2f7c68cb55ecb7331f2381deb497c27155f32faf Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 03 Jan 2024 09:43:39 +0000
Subject: [PATCH] update kernel to 5.10.198
---
kernel/kernel/bpf/bpf_lru_list.h | 7 ++-----
1 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/kernel/kernel/bpf/bpf_lru_list.h b/kernel/kernel/bpf/bpf_lru_list.h
index 4ea227c..8f3c8b2 100644
--- a/kernel/kernel/bpf/bpf_lru_list.h
+++ b/kernel/kernel/bpf/bpf_lru_list.h
@@ -64,11 +64,8 @@
static inline void bpf_lru_node_set_ref(struct bpf_lru_node *node)
{
- /* ref is an approximation on access frequency. It does not
- * have to be very accurate. Hence, no protection is used.
- */
- if (!node->ref)
- node->ref = 1;
+ if (!READ_ONCE(node->ref))
+ WRITE_ONCE(node->ref, 1);
}
int bpf_lru_init(struct bpf_lru *lru, bool percpu, u32 hash_offset,
--
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