>
> - __bio_add_page(bio, page, len, 0);
> + while (len) {
> + unsigned int io_len = min_t(unsigned int, len, PAGE_SIZE);
> +
> + __bio_add_page(bio, page, io_len, 0);
> + len -= io_len;
> + }
Maybe out of self-interest, but shouldn't we replace ZERO_PAGE with a
sufficiently larger ZERO_FOLIO? Right now I have a case where I have
to have a zero padding of up to MAX_PAGECACHE_ORDER minus block size,
so having a MAX_PAGECACHE_ORDER folio would have been really helpful
for me, but I suspect there are many other such cases as well.
