It's easy - in linuxlib.php
// Issue #680 - Too high inode count in Kloxo quota - set 0 that unlimited
// $inode = $disk * 500;
$inode = 0;
lxshell_return("setquota", "-u", $username, $disk, $disk, $inode, $inode, "
Just change:
$inode = 0;
to
$inode = 1000000;
or some value that can be set via plans