hlist_nulls_empty 589 include/net/sock.h return hlist_nulls_empty(head) ? NULL : __sk_nulls_head(head); hlist_nulls_empty 967 net/ipv4/inet_diag.c if (hlist_nulls_empty(&head->chain)) hlist_nulls_empty 1024 net/ipv4/ping.c if (hlist_nulls_empty(hslot)) hlist_nulls_empty 2200 net/ipv4/tcp_ipv4.c return hlist_nulls_empty(&tcp_hashinfo.ehash[st->bucket].chain); hlist_nulls_empty 2361 net/netfilter/nf_conntrack_core.c while (!hlist_nulls_empty(&nf_conntrack_hash[i])) {