- list_for_each_entry_safe(page, tmp_page, &fbdefio->pagelist, lru) {
- lock_page(page);
- /*
- * The workqueue callback can be triggered after a
- * ->page_mkwrite() call but before the PTE has been marked
- * dirty. In this case page_mkclean() won't "rearm" the page.
- *
- * To avoid this, remove those "non-dirty" pages from the
- * pagelist before calling the driver's callback, then add
- * them back to get processed on the next work iteration.
- * At that time, their PTEs will hopefully be dirty for real.
- */
- if (!page_mkclean(page))
- list_move_tail(&page->lru, &non_dirty);
- unlock_page(page);