1BPF_F_NO_PREALLOC	1
2BPF_F_NO_COMMON_LRU	2
3BPF_F_NUMA_NODE		4
4BPF_F_RDONLY		(1U << 3)
5BPF_F_WRONLY		(1U << 4)
6BPF_F_STACK_BUILD_ID	(1U << 5)
7