Constant libfuse_sys::fuse::fuse_buf_copy_flags_FUSE_BUF_NO_SPLICE

pub const fuse_buf_copy_flags_FUSE_BUF_NO_SPLICE: fuse_buf_copy_flags = 2;

Don't use splice(2)

Always fall back to using read and write instead of splice(2) to copy data from one file descriptor to another.

If this flag is not set, then only fall back if splice is unavailable.