kernel/bpf/bpf_struct_ops.c

63 static DEFINE_MUTEX(update_mutex);
1121 	mutex_lock(&update_mutex);  in bpf_struct_ops_map_link_update()
1123 	old_map = rcu_dereference_protected(st_link->map, lockdep_is_held(&update_mutex));  in bpf_struct_ops_map_link_update()
1149 	mutex_unlock(&update_mutex);  in bpf_struct_ops_map_link_update()
1160 	mutex_lock(&update_mutex);  in bpf_struct_ops_map_link_detach()
1162 	map = rcu_dereference_protected(st_link->map, lockdep_is_held(&update_mutex));  in bpf_struct_ops_map_link_detach()
1164 		mutex_unlock(&update_mutex);  in bpf_struct_ops_map_link_detach()
1177 	mutex_unlock(&update_mutex);  in bpf_struct_ops_map_link_detach()
1238 	mutex_lock(&update_mutex);  in bpf_struct_ops_link_create()
1241 		mutex_unlock(&update_mutex);  in bpf_struct_ops_link_create()
1247 	mutex_unlock(&update_mutex);  in bpf_struct_ops_link_create()