Function posix_fallocate
fn posix_fallocate<Fd: std::os::fd::AsFd>(fd: Fd, offset: off_t, len: off_t) -> Result<()>Pre-allocate storage for a range in a file
posix_fallocatefn posix_fallocate<Fd: std::os::fd::AsFd>(fd: Fd, offset: off_t, len: off_t) -> Result<()>Pre-allocate storage for a range in a file