fs/nfs/dir.c

138 	u64 cookie;
257 	return array->size == 0 ? array->last_cookie : array->array[0].cookie;
311 					  u64 *cookie)
330 	cache_entry->cookie = array->last_cookie;
335 	array->last_cookie = entry->cookie;
336 	if (array->last_cookie <= cache_entry->cookie)
342 	*cookie = array->last_cookie;
351  * cookie index of the first readdir entry in a page.
359 static pgoff_t nfs_readdir_folio_cookie_hash(u64 cookie)
361 	if (cookie == 0)
363 	return hash_64(cookie, 18);
386 static void nfs_readdir_folio_init_and_validate(struct folio *folio, u64 cookie,
390 		if (nfs_readdir_folio_validate(folio, cookie, change_attr))
394 	nfs_readdir_folio_init_array(folio, cookie, change_attr);
399 						  u64 cookie, u64 change_attr)
401 	pgoff_t index = nfs_readdir_folio_cookie_hash(cookie);
407 	nfs_readdir_folio_init_and_validate(folio, cookie, change_attr);
443 						u64 cookie, u64 change_attr)
445 	pgoff_t index = nfs_readdir_folio_cookie_hash(cookie);
453 	nfs_readdir_folio_init_and_validate(folio, cookie, change_attr);
454 	if (nfs_readdir_folio_last_cookie(folio) != cookie)
455 		nfs_readdir_folio_reinit_array(folio, cookie, change_attr);
513 	desc->dir_cookie = array->array[index].cookie;
522 					      u64 cookie)
527 	if (cookie >= array->last_cookie)
529 	if (array->size && cookie < array->array[0].cookie)
544 		if (array->array[i].cookie == desc->dir_cookie) {
581 				  __be32 *verf, u64 cookie,
590 		.cookie = cookie,
830 	u64 cookie;
845 		status = nfs_readdir_folio_array_append(folio, entry, &cookie);
852 			new = nfs_readdir_folio_array_alloc(cookie, GFP_KERNEL);
858 			new = nfs_readdir_folio_get_next(mapping, cookie,
867 		status = nfs_readdir_folio_array_append(folio, entry, &cookie);
943 	entry->cookie = nfs_readdir_folio_last_cookie(folio);
956 	status = nfs_readdir_xdr_filler(desc, verf_arg, entry->cookie, pages,
996 	u64 cookie = desc->last_cookie;
999 	folio = nfs_readdir_folio_get_locked(mapping, cookie, change_attr);
1003 		nfs_readdir_folio_reinit_array(folio, cookie, change_attr);
1044 		 * Set the cookie verifier if the page cache was empty
1114 			desc->dir_cookie = array->array[i + 1].cookie;
1115 			desc->last_cookie = array->array[0].cookie;
1126 	dfprintk(DIRCACHE, "NFS: nfs_do_filldir() filling ended @ cookie %llu\n",
1131  * If we cannot find a cookie in our cache, we suspect that this is
1149 	dfprintk(DIRCACHE, "NFS: uncached_readdir() searching for cookie %llu\n",
1216    last cookie cache takes care of the common case of reading the
1230 	dfprintk(FILE, "NFS: readdir(%pD2) starting at cookie %llu\n",
1236 	 * *desc->dir_cookie has the cookie for the next entry. We have
1238 	 * revalidate the cookie.
1280 				/* Or that the server has 'lost' a cookie */