> @@ -927,6 +970,7 @@ static int __bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
> ssize_t size, left;
> unsigned len, i;
> size_t offset;
> + unsigned op = bio_op(bio);
>
> /*
> * Move page array up in the allocated memory for the bio vecs as far as
> @@ -944,13 +988,20 @@ static int __bio_iov_iter_get_pages(struct bio *bio, struct iov_iter *iter)
> struct page *page = pages[i];
>
> len = min_t(size_t, PAGE_SIZE - offset, left);
> + if (op == REQ_OP_ZONE_APPEND) {
> + int ret;
>
> + ret = bio_add_append_page(bio, page, len, offset);
> + if (ret != len)
> + return -EINVAL;
I think zone append needs the same try to merge logic to deal with
page refcounts doesn't it?
