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