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diff --git a/fs/yaffs2/yaffs_tagscompat.h b/fs/yaffs2/yaffs_tagscompat.h
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+/*
+ * 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 Charles Manning <charles@aleph1.co.uk>
+ *
+ * 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_TAGSCOMPAT_H__
+#define __YAFFS_TAGSCOMPAT_H__
+
+#include "yaffs_guts.h"
+int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
+ int chunkInNAND,
+ const __u8 * data,
+ const yaffs_ExtendedTags *
+ tags);
+int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
+ int chunkInNAND,
+ __u8 * data,
+ yaffs_ExtendedTags *
+ tags);
+int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
+ int blockNo);
+int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+ int blockNo, yaffs_BlockState *
+ state, int *sequenceNumber);
+
+void yaffs_CalcTagsECC(yaffs_Tags * tags);
+int yaffs_CheckECCOnTags(yaffs_Tags * tags);
+int yaffs_CountBits(__u8 byte);
+
+#endif
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