github.com/afumu/libc@v0.0.6/musl/src/linux/readahead.c (about)

     1  #define _GNU_SOURCE
     2  #include <fcntl.h>
     3  #include "syscall.h"
     4  
     5  ssize_t readahead(int fd, off_t pos, size_t len)
     6  {
     7  	return syscall(SYS_readahead, fd, __SYSCALL_LL_O(pos), len);
     8  }