hat_getpagesize
pagesize = hatsize = hat_getpagesize(seg->s_as->a_hat, saddr);
if (hatsize != hat_getpagesize(seg->s_as->a_hat, saddr))
pgsz = hat_getpagesize(hat,
ssize_t hat_getpagesize(struct hat *, caddr_t);
sz = hat_getpagesize(hat, va);
sz = hat_getpagesize(sfmmup, va);