The current file offset of the open file referred to by
.I fd
is left unchanged.
-.SH "RETURN VALUE"
+.SH RETURN VALUE
On success,
.BR readahead ()
returns 0; on failure, \-1 is returned, with
.BR readahead ()
system call appeared in Linux 2.4.13;
glibc support has been provided since version 2.3.
-.SH "CONFORMING TO"
+.SH CONFORMING TO
The
.BR readahead ()
system call is Linux-specific, and its use should be avoided
in portable applications.
-.SH "SEE ALSO"
+.SH SEE ALSO
.BR lseek (2),
.BR madvise (2),
.BR mmap (2),