after which it *has* to look in the cache.
To inform fscache that a page might now be in the cache, the following function
-should be called from the ``releasepage`` address space op::
+should be called from the ``release_folio`` address space op::
void fscache_note_page_release(struct fscache_cookie *cookie);
-if the page has been released (ie. releasepage returned true).
+if the page has been released (ie. release_folio returned true).
Page release and page invalidation should also wait for any mark left on the
page to say that a DIO write is underway from that page::