vxfs_get_page
extern struct page * vxfs_get_page(struct address_space *, u_long);
pp = vxfs_get_page(ilistp->i_mapping, ino * VXFS_ISIZE / PAGE_SIZE);
pp = vxfs_get_page(ip->i_mapping, pos >> PAGE_SHIFT);
pp = vxfs_get_page(ip->i_mapping, pos >> PAGE_SHIFT);