X-Git-Url: http://www.aleph1.co.uk/gitweb/?p=yaffs2.git;a=blobdiff_plain;f=moduleconfig.h;h=f58b8e25b4558d367e5cf4d72c5869db85443ca2;hp=2809701f79775e9737ddab54a21f11d87353461b;hb=06f8628f9290bd967b8374c992a11dd06caa8747;hpb=1f4c7592aae88726d6011da0d78698758d60b98e

diff --git a/moduleconfig.h b/moduleconfig.h
index 2809701..f58b8e2 100644
--- a/moduleconfig.h
+++ b/moduleconfig.h
@@ -1,14 +1,77 @@
+/*
+ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 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__
 
 #ifdef YAFFS_OUT_OF_TREE
+
+/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */
 #define CONFIG_YAFFS_FS
 #define CONFIG_YAFFS_YAFFS1
 #define CONFIG_YAFFS_YAFFS2
-#define CONFIG_YAFFS_DOES_ECC
-#define CONFIG_YAFFS_ECC_WRONG_ORDER
+
+/* These options are independent of each other.  Select those that matter. */
+
+/* Default: Not selected */
+/* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
+/* #define CONFIG_YAFFS_DOES_ECC */
+
+/* Default: Selected */
+/* Meaning: Yaffs does its own 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 */
+
+/* Default: Selected */
+/* Meaning: Disables testing whether chunks are erased before writing to them*/
 #define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
+
+/* 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: Selected */
+/* Meaning: Cache short names, taking more RAM, but faster look-ups */
 #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
-#endif /* KBUILD_MODNAME */
+
+/* Default: Unselected */
+/* Meaning: Select to disable block refreshing. */
+/* Block Refreshing periodically rewrites the oldest block. */
+/* #define CONFIG_DISABLE_BLOCK_REFRESHING */
+
+
+/*
+Older-style on-NAND data format has a "pageStatus" 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 pageStatus byte */
+/* #define CONFIG_YAFFS_9BYTE_TAGS */
+
+#endif /* YAFFS_OUT_OF_TREE */
 
 #endif /* __YAFFS_CONFIG_H__ */