diff -NaurB yaffs2/Kconfig yaffs2.hacked/Kconfig
--- yaffs2/Kconfig	2006-09-21 10:13:59.000000000 +0200
+++ yaffs2.hacked/Kconfig	2006-12-11 16:28:11.000000000 +0100
@@ -90,6 +90,24 @@
 
 	  If unsure, say N.
 
+config YAFFS_CHECKPOINT_RESERVED_BLOCKS
+	int "Reserved blocks for checkpointing"
+	depends on YAFFS_YAFFS2
+	default 10
+	help
+	  Give the number of Blocks to reserve for checkpointing. These Blocks
+	  are reserved per partition, so if you have very small partitions the
+	  default (10) may be a mess for you. 
+	  You can set this value to 0, but that does not mean checkpointing is
+	  disabled at all. There only won't be any specially reserved blocks for
+	  checkpointing, so if there is enough free space on the filesystem,
+	  it will be used for checkpointing.
+
+	  If unsure, leave at default (10), but don't wonder if there are always
+	  2MB used on your large page device partition (10 x 2k pagesize). When
+	  using small partitions or when being very small on space, you probably
+	  want to set this to zero.
+
 config YAFFS_DISABLE_WIDE_TNODES
 	bool "Turn off wide tnodes"
 	depends on YAFFS_FS
diff -NaurB yaffs2/moduleconfig.h yaffs2.hacked/moduleconfig.h
--- yaffs2/moduleconfig.h	2005-09-21 17:16:59.000000000 +0200
+++ yaffs2.hacked/moduleconfig.h	2006-12-11 16:28:28.000000000 +0100
@@ -27,6 +27,10 @@
 /* Meaning: Cache short names, taking more RAM, but faster look-ups */
 #define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
 
+/* Default: 10 */
+/* Meaning: set the count of blocks to reserve for checkpointing */
+#define YAFFS_CHECKPOINT_RESERVED_BLOCKS 10
+
 #endif /* YAFFS_OUT_OF_TREE */
 
 #endif /* __YAFFS_CONFIG_H__ */
diff -NaurB yaffs2/yaffs_fs.c yaffs2.hacked/yaffs_fs.c
--- yaffs2/yaffs_fs.c	2006-10-24 20:09:15.000000000 +0200
+++ yaffs2.hacked/yaffs_fs.c	2006-12-11 16:27:49.000000000 +0100
@@ -1662,7 +1662,7 @@
 #endif
 		nBlocks = mtd->size / mtd->erasesize;
 
-		dev->nCheckpointReservedBlocks = 10;
+		dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
 		dev->startBlock = 0;
 		dev->endBlock = nBlocks - 1;
 	} else {