On Mon, Jan 23, 2023 at 11:28:40AM +0000, David Howells wrote:

	void __bio_release_pages(struct bio *bio, bool mark_dirty)
	{
		unsigned int gup_flags = bio_to_gup_flags(bio);
		struct bvec_iter_all iter_all;
		struct bio_vec *bvec;

		bio_for_each_segment_all(bvec, bio, iter_all) {
			if (mark_dirty && !PageCompound(bvec->bv_page))
				set_page_dirty_lock(bvec->bv_page);
	>>>>		page_put_unpin(bvec->bv_page, gup_flags);
		}
	}

that ought to be a call to bio_release_page(), but the optimiser doesn't want
to inline it:-/

Why?  __bio_release_pages is the fast path, no need to force using
bio_relese_page which is otherwise only used for error cleanup.