_copy_from_pages
_copy_from_pages(buf, pages, 0, res.xattr_len);
_copy_from_pages(valp, pages, 0, len);
_copy_from_pages(acl->data, pages, pgbase, acl_len);
_copy_from_pages(buf, pages, res.acl_data_offset, res.acl_len);
extern void _copy_from_pages(char *p, struct page **pages, size_t pgbase,
_copy_from_pages(obj, subbuf->pages, subbuf->page_base, this_len);
EXPORT_SYMBOL_GPL(_copy_from_pages);
_copy_from_pages(tail->iov_base + tato, buf->pages,
_copy_from_pages(head->iov_base + hdto, buf->pages,