Function nc::readahead[−][src]

pub fn readahead(fd: i32, offset: off_t, count: size_t) -> Result<(), Errno>

Expand description

Initialize file head into page cache.

let path = "/etc/passwd";
let ret = nc::open(path, nc::O_RDONLY, 0);
let fd = ret.unwrap();
let ret = nc::readahead(fd, 0, 64);
assert!(ret.is_ok());
assert!(nc::close(fd).is_ok());