+static int _maybe_not_all_in_one_io(struct ore_io_state *ios,
+ struct page_collect *pcol_src, struct page_collect *pcol)
+{
+ /* length was wrong or offset was not page aligned */
+ BUG_ON(pcol_src->nr_pages < ios->nr_pages);
+
+ if (pcol_src->nr_pages > ios->nr_pages) {
+ struct page **src_page;
+ unsigned pages_less = pcol_src->nr_pages - ios->nr_pages;
+ unsigned long len_less = pcol_src->length - ios->length;
+ unsigned i;
+ int ret;
+
+ /* This IO was trimmed */
+ pcol_src->nr_pages = ios->nr_pages;
+ pcol_src->length = ios->length;
+
+ /* Left over pages are passed to the next io */
+ pcol->expected_pages += pages_less;
+ pcol->nr_pages = pages_less;
+ pcol->length = len_less;
+ src_page = pcol_src->pages + pcol_src->nr_pages;
+ pcol->pg_first = (*src_page)->index;
+
+ ret = pcol_try_alloc(pcol);
+ if (unlikely(ret))
+ return ret;
+
+ for (i = 0; i < pages_less; ++i)
+ pcol->pages[i] = *src_page++;
+
+ EXOFS_DBGMSG("Length was adjusted nr_pages=0x%x "
+ "pages_less=0x%x expected_pages=0x%x "
+ "next_offset=0x%llx next_len=0x%lx\n",
+ pcol_src->nr_pages, pages_less, pcol->expected_pages,
+ pcol->pg_first * PAGE_SIZE, pcol->length);
+ }
+ return 0;
+}
+