On Fri, Oct 30, 2020 at 03:26:10PM +0800, Chao Yu wrote:> +> +struct f2fs_gc_range {> + u32 sync;> + u64 start;> + u64 len;> +};Userspace headers need to use __u32, __u64, etc. instead of u32, u64, etc.Did you try installing this header, and including it in a userspace program?- Eric