bpf: Remove unused but set variable in __bpf_lru_list_shrink_inactive()

Remove the unused but set variable 'first_node' in
__bpf_lru_list_shrink_inactive() to fix the following GCC warning when
building with 'W=1':

  kernel/bpf/bpf_lru_list.c:216:41: warning: variable ‘first_node’ set but not used [-Wunused-but-set-variable]

Cc: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/kernel/bpf/bpf_lru_list.c b/kernel/bpf/bpf_lru_list.c
index 89b7ef41c86bef2892f9a30850ce62fa32eaa7e1..d78501ee060901e14c3eee08fef25356c17c4f2f 100644 (file)
--- a/kernel/bpf/bpf_lru_list.c
+++ b/kernel/bpf/bpf_lru_list.c
@@ -213,11 +213,10 @@ __bpf_lru_list_shrink_inactive(struct bpf_lru *lru,
                               enum bpf_lru_list_type tgt_free_type)
 {
        struct list_head *inactive = &l->lists[BPF_LRU_LIST_T_INACTIVE];
-       struct bpf_lru_node *node, *tmp_node, *first_node;
+       struct bpf_lru_node *node, *tmp_node;
        unsigned int nshrinked = 0;
        unsigned int i = 0;
 
-       first_node = list_first_entry(inactive, struct bpf_lru_node, list);
        list_for_each_entry_safe_reverse(node, tmp_node, inactive, list) {
                if (bpf_lru_node_is_ref(node)) {
                        __bpf_lru_node_move(l, node, BPF_LRU_LIST_T_ACTIVE);