yaffs: Discard partially written summary data

[yaffs2.git] / moduleconfig.h

diff --git a/moduleconfig.h b/moduleconfig.h
index e67c7bc8029559885b9c9e904e06eb09bdc691c8..b8b0e89ed0fb4a78bfec5107b3a43c7efa963e60 100644 (file)
--- a/moduleconfig.h
+++ b/moduleconfig.h
@@ -1,3 +1,18 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2011 Aleph One Ltd.
+ *   for Toby Churchill Ltd and Brightstar Engineering
+ *
+ * Created by Martin Fouts <Martin.Fouts@palmsource.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 2.1 as
+ * published by the Free Software Foundation.
+ *
+ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
+ */
+
 #ifndef __YAFFS_CONFIG_H__
 #define __YAFFS_CONFIG_H__
 
@@ -12,20 +27,54 @@
 
 /* Default: Not selected */
 /* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
-//#define CONFIG_YAFFS_DOES_ECC
+/* #define CONFIG_YAFFS_DOES_ECC */
+
+/* Default: Selected */
+/* Meaning: Yaffs does ECC on tags for packed tags rather than use mtd */
+#define CONFIG_YAFFS_DOES_TAGS_ECC
 
 /* Default: Not selected */
 /* Meaning: ECC byte order is 'wrong'.  Only meaningful if */
 /*          CONFIG_YAFFS_DOES_ECC is set */
-//#define CONFIG_YAFFS_ECC_WRONG_ORDER
+/* #define CONFIG_YAFFS_ECC_WRONG_ORDER */
 
-/* Default: Selected */
-/* Meaning: Disables testing whether chunks are erased before writing to them*/
-#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
+/* Default: Not selected */
+/* Meaning: Always test whether chunks are erased before writing to them.
+           Use during mtd debugging and init. */
+/* #define CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED */
+
+/* Default: Not Selected */
+/* Meaning: At mount automatically empty all files from lost and found. */
+/* This is done to fix an old problem where rmdir was not checking for an */
+/* empty directory. This can also be achieved with a mount option. */
+#define CONFIG_YAFFS_EMPTY_LOST_AND_FOUND
+
+/* Default: Unselected */
+/* Meaning: Select to disable block refreshing. */
+/* Block Refreshing periodically rewrites the oldest block. */
+/* #define CONFIG_DISABLE_BLOCK_REFRESHING */
+
+/* Default: Unselected */
+/* Meaning: Select to disable background processing */
+/* #define CONFIG_DISABLE_BACKGROUND */
 
 /* Default: Selected */
-/* Meaning: Cache short names, taking more RAM, but faster look-ups */
-#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+/* Meaning: Enable XATTR support */
+#define CONFIG_YAFFS_XATTR
+
+/*
+Older-style on-NAND data format has a "page_status" byte to record
+chunk/page state.  This byte is zeroed when the page is discarded.
+Choose this option if you have existing on-NAND data in this format
+that you need to continue to support.  New data written also uses the
+older-style format.
+Note: Use of this option generally requires that MTD's oob layout be
+adjusted to use the older-style format.  See notes on tags formats and
+MTD versions in yaffs_mtdif1.c.
+*/
+/* Default: Not selected */
+/* Meaning: Use older-style on-NAND data format with page_status byte */
+/* #define CONFIG_YAFFS_9BYTE_TAGS */
 
 #endif /* YAFFS_OUT_OF_TREE */