netfilter: nft_set_rbtree: Remove unused variable nft_net

The code that uses nft_net has been removed, and the nft_pernet function
is merely obtaining a reference to shared data through the net pointer.
The content of the net pointer is not modified or changed, so both of
them should be removed.

silence the warning:
net/netfilter/nft_set_rbtree.c:627:26: warning: variable ‘nft_net’ set but not used

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=7103
Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nft_set_rbtree.c b/net/netfilter/nft_set_rbtree.c
index 6f1186abd47b4366e10f09f9dbed80101bbdf69c..baa3fea4fe65c8f938e665a7fb6b0e4fc0f8f9ad 100644 (file)
--- a/net/netfilter/nft_set_rbtree.c
+++ b/net/netfilter/nft_set_rbtree.c
@@ -624,14 +624,12 @@ static void nft_rbtree_gc(struct nft_set *set)
 {
        struct nft_rbtree *priv = nft_set_priv(set);
        struct nft_rbtree_elem *rbe, *rbe_end = NULL;
-       struct nftables_pernet *nft_net;
        struct rb_node *node, *next;
        struct nft_trans_gc *gc;
        struct net *net;
 
        set  = nft_set_container_of(priv);
        net  = read_pnet(&set->net);
-       nft_net = nft_pernet(net);
 
        gc = nft_trans_gc_alloc(set, 0, GFP_KERNEL);
        if (!gc)