Merge git://git.infradead.org/mtd-2.6

* git://git.infradead.org/mtd-2.6: (46 commits)
  [MTD] [MAPS] drivers/mtd/maps/ck804xrom.c: convert pci_module_init()
  [MTD] [NAND] CM-x270 MTD driver
  [MTD] [NAND] Wrong calculation of page number in nand_block_bad()
  [MTD] [MAPS] fix plat-ram printk format
  [JFFS2] Fix compr_rubin.c build after include file elimination.
  [JFFS2] Handle inodes with only a single metadata node with non-zero isize
  [JFFS2] Tidy up licensing/copyright boilerplate.
  [MTD] [OneNAND] Exit loop only when column start with 0
  [MTD] [OneNAND] Fix access the past of the real oobfree array
  [MTD] [OneNAND] Update Samsung OneNAND official URL
  [JFFS2] Better fix for all-zero node headers
  [JFFS2] Improve read_inode memory usage, v2.
  [JFFS2] Improve failure mode if inode checking leaves unchecked space.
  [JFFS2] Fix cross-endian build.
  [MTD] Finish conversion mtd_blkdevs to use the kthread API
  [JFFS2] Obsolete dirent nodes immediately on unlink, where possible.
  Use menuconfig objects: MTD
  [MTD] mtd_blkdevs: Convert to use the kthread API
  [MTD] Fix fwh_lock locking
  [JFFS2] Speed up mount for directly-mapped NOR flash
  ...

46 files changed, 880 insertions, 1386 deletions

diff --git a/fs/jffs2/LICENCE b/fs/jffs2/LICENCE
index cd81d83..5628859 100644
--- a/fs/jffs2/LICENCE
+++ b/fs/jffs2/LICENCE
@@ -1,7 +1,7 @@
 The files in this directory and elsewhere which refer to this LICENCE
 file are part of JFFS2, the Journalling Flash File System v2.
 
-	Copyright (C) 2001, 2002 Red Hat, Inc.
+	Copyright © 2001-2007 Red Hat, Inc. and others
 
 JFFS2 is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free
@@ -28,8 +28,3 @@ of the GNU General Public License.
 This exception does not invalidate any other reasons why a work based on
 this file might be covered by the GNU General Public License.
 
-For information on obtaining alternative licences for JFFS2, see 
-http://sources.redhat.com/jffs2/jffs2-licence.html
-
-
-	$Id: LICENCE,v 1.1 2002/05/20 14:56:37 dwmw2 Exp $
diff --git a/fs/jffs2/Makefile b/fs/jffs2/Makefile
index 7f28ee0..c32b241 100644
--- a/fs/jffs2/Makefile
+++ b/fs/jffs2/Makefile
@@ -1,7 +1,6 @@
 #
 # Makefile for the Linux Journalling Flash File System v2 (JFFS2)
 #
-# $Id: Makefile.common,v 1.11 2005/09/07 08:34:53 havasi Exp $
 #
 
 obj-$(CONFIG_JFFS2_FS) += jffs2.o
diff --git a/fs/jffs2/README.Locking b/fs/jffs2/README.Locking
index c8f0bd6..d14d5a4 100644
--- a/fs/jffs2/README.Locking
+++ b/fs/jffs2/README.Locking
@@ -1,4 +1,3 @@
-	$Id: README.Locking,v 1.12 2005/04/13 13:22:35 dwmw2 Exp $
 
 	JFFS2 LOCKING DOCUMENTATION
 	---------------------------
diff --git a/fs/jffs2/TODO b/fs/jffs2/TODO
index d0e23b2..5d3ea40 100644
--- a/fs/jffs2/TODO
+++ b/fs/jffs2/TODO
@@ -1,4 +1,3 @@
-$Id: TODO,v 1.18 2005/09/22 11:24:56 dedekind Exp $
 
  - support asynchronous operation -- add a per-fs 'reserved_space' count,
    let each outstanding write reserve the _maximum_ amount of physical
@@ -30,8 +29,6 @@ $Id: TODO,v 1.18 2005/09/22 11:24:56 dedekind Exp $
      the full dirent, we only need to go to the flash in lookup() when we think we've
      got a match, and in readdir(). 
    - Doubly-linked next_in_ino list to allow us to free obsoleted raw_node_refs immediately?
-   - Remove totlen from jffs2_raw_node_ref? Need to have totlen passed into
-	jffs2_mark_node_obsolete(). Can all callers work it out?
    - Remove size from jffs2_raw_node_frag. 
 
 dedekind:
diff --git a/fs/jffs2/acl.c b/fs/jffs2/acl.c
index 73f0d60..a46101e 100644
--- a/fs/jffs2/acl.c
+++ b/fs/jffs2/acl.c
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
diff --git a/fs/jffs2/acl.h b/fs/jffs2/acl.h
index fa327db..c84378c 100644
--- a/fs/jffs2/acl.h
+++ b/fs/jffs2/acl.h
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 struct jffs2_acl_entry {
 	jint16_t	e_tag;
 	jint16_t	e_perm;
diff --git a/fs/jffs2/background.c b/fs/jffs2/background.c
index 888f236..0c82dfc 100644
--- a/fs/jffs2/background.c
+++ b/fs/jffs2/background.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: background.c,v 1.54 2005/05/20 21:37:12 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/build.c b/fs/jffs2/build.c
index 07119c4..0ca2fff 100644
--- a/fs/jffs2/build.c
+++ b/fs/jffs2/build.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: build.c,v 1.85 2005/11/07 11:14:38 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/compr.c b/fs/jffs2/compr.c
index 7001ba2..485d065 100644
--- a/fs/jffs2/compr.c
+++ b/fs/jffs2/compr.c
@@ -1,16 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  * Created by Arjan van de Ven <arjanv@redhat.com>
  *
- * Copyright (C) 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
+ * Copyright © 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
  *                    University of Szeged, Hungary
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: compr.c,v 1.46 2005/11/07 11:14:38 gleixner Exp $
- *
  */
 
 #include "compr.h"
@@ -268,144 +266,6 @@ int jffs2_unregister_compressor(struct jffs2_compressor *comp)
         return 0;
 }
 
-#ifdef CONFIG_JFFS2_PROC
-
-#define JFFS2_STAT_BUF_SIZE 16000
-
-char *jffs2_list_compressors(void)
-{
-        struct jffs2_compressor *this;
-        char *buf, *act_buf;
-
-        act_buf = buf = kmalloc(JFFS2_STAT_BUF_SIZE,GFP_KERNEL);
-        list_for_each_entry(this, &jffs2_compressor_list, list) {
-                act_buf += sprintf(act_buf, "%10s priority:%d ", this->name, this->priority);
-                if ((this->disabled)||(!this->compress))
-                        act_buf += sprintf(act_buf,"disabled");
-                else
-                        act_buf += sprintf(act_buf,"enabled");
-                act_buf += sprintf(act_buf,"\n");
-        }
-        return buf;
-}
-
-char *jffs2_stats(void)
-{
-        struct jffs2_compressor *this;
-        char *buf, *act_buf;
-
-        act_buf = buf = kmalloc(JFFS2_STAT_BUF_SIZE,GFP_KERNEL);
-
-        act_buf += sprintf(act_buf,"JFFS2 compressor statistics:\n");
-        act_buf += sprintf(act_buf,"%10s   ","none");
-        act_buf += sprintf(act_buf,"compr: %d blocks (%d)  decompr: %d blocks\n", none_stat_compr_blocks,
-                           none_stat_compr_size, none_stat_decompr_blocks);
-        spin_lock(&jffs2_compressor_list_lock);
-        list_for_each_entry(this, &jffs2_compressor_list, list) {
-                act_buf += sprintf(act_buf,"%10s ",this->name);
-                if ((this->disabled)||(!this->compress))
-                        act_buf += sprintf(act_buf,"- ");
-                else
-                        act_buf += sprintf(act_buf,"+ ");
-                act_buf += sprintf(act_buf,"compr: %d blocks (%d/%d)  decompr: %d blocks ", this->stat_compr_blocks,
-                                   this->stat_compr_new_size, this->stat_compr_orig_size,
-                                   this->stat_decompr_blocks);
-                act_buf += sprintf(act_buf,"\n");
-        }
-        spin_unlock(&jffs2_compressor_list_lock);
-
-        return buf;
-}
-
-char *jffs2_get_compression_mode_name(void)
-{
-        switch (jffs2_compression_mode) {
-        case JFFS2_COMPR_MODE_NONE:
-                return "none";
-        case JFFS2_COMPR_MODE_PRIORITY:
-                return "priority";
-        case JFFS2_COMPR_MODE_SIZE:
-                return "size";
-        }
-        return "unkown";
-}
-
-int jffs2_set_compression_mode_name(const char *name)
-{
-        if (!strcmp("none",name)) {
-                jffs2_compression_mode = JFFS2_COMPR_MODE_NONE;
-                return 0;
-        }
-        if (!strcmp("priority",name)) {
-                jffs2_compression_mode = JFFS2_COMPR_MODE_PRIORITY;
-                return 0;
-        }
-        if (!strcmp("size",name)) {
-                jffs2_compression_mode = JFFS2_COMPR_MODE_SIZE;
-                return 0;
-        }
-        return 1;
-}
-
-static int jffs2_compressor_Xable(const char *name, int disabled)
-{
-        struct jffs2_compressor *this;
-        spin_lock(&jffs2_compressor_list_lock);
-        list_for_each_entry(this, &jffs2_compressor_list, list) {
-                if (!strcmp(this->name, name)) {
-                        this->disabled = disabled;
-                        spin_unlock(&jffs2_compressor_list_lock);
-                        return 0;
-                }
-        }
-        spin_unlock(&jffs2_compressor_list_lock);
-        printk(KERN_WARNING "JFFS2: compressor %s not found.\n",name);
-        return 1;
-}
-
-int jffs2_enable_compressor_name(const char *name)
-{
-        return jffs2_compressor_Xable(name, 0);
-}
-
-int jffs2_disable_compressor_name(const char *name)
-{
-        return jffs2_compressor_Xable(name, 1);
-}
-
-int jffs2_set_compressor_priority(const char *name, int priority)
-{
-        struct jffs2_compressor *this,*comp;
-        spin_lock(&jffs2_compressor_list_lock);
-        list_for_each_entry(this, &jffs2_compressor_list, list) {
-                if (!strcmp(this->name, name)) {
-                        this->priority = priority;
-                        comp = this;
-                        goto reinsert;
-                }
-        }
-        spin_unlock(&jffs2_compressor_list_lock);
-        printk(KERN_WARNING "JFFS2: compressor %s not found.\n",name);
-        return 1;
-reinsert:
-        /* list is sorted in the order of priority, so if
-           we change it we have to reinsert it into the
-           good place */
-        list_del(&comp->list);
-        list_for_each_entry(this, &jffs2_compressor_list, list) {
-                if (this->priority < comp->priority) {
-                        list_add(&comp->list, this->list.prev);
-                        spin_unlock(&jffs2_compressor_list_lock);
-                        return 0;
-                }
-        }
-        list_add_tail(&comp->list, &jffs2_compressor_list);
-        spin_unlock(&jffs2_compressor_list_lock);
-        return 0;
-}
-
-#endif
-
 void jffs2_free_comprbuf(unsigned char *comprbuf, unsigned char *orig)
 {
         if (orig != comprbuf)
diff --git a/fs/jffs2/compr.h b/fs/jffs2/compr.h
index 509b8b1..68cc701 100644
--- a/fs/jffs2/compr.h
+++ b/fs/jffs2/compr.h
@@ -1,13 +1,10 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
+ * Copyright © 2004   Ferenc Havasi <havasi@inf.u-szeged.hu>,
  *                    University of Szeged, Hungary
  *
- * For licensing information, see the file 'LICENCE' in the
- * jffs2 directory.
- *
- * $Id: compr.h,v 1.9 2005/11/07 11:14:38 gleixner Exp $
+ * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
 
@@ -76,16 +73,6 @@ int jffs2_decompress(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 
 void jffs2_free_comprbuf(unsigned char *comprbuf, unsigned char *orig);
 
-#ifdef CONFIG_JFFS2_PROC
-int jffs2_enable_compressor_name(const char *name);
-int jffs2_disable_compressor_name(const char *name);
-int jffs2_set_compression_mode_name(const char *mode_name);
-char *jffs2_get_compression_mode_name(void);
-int jffs2_set_compressor_priority(const char *mode_name, int priority);
-char *jffs2_list_compressors(void);
-char *jffs2_stats(void);
-#endif
-
 /* Compressor modules */
 /* These functions will be called by jffs2_compressors_init/exit */
 
diff --git a/fs/jffs2/compr_rtime.c b/fs/jffs2/compr_rtime.c
index 2eb1b74..0d0bfd2 100644
--- a/fs/jffs2/compr_rtime.c
+++ b/fs/jffs2/compr_rtime.c
@@ -1,13 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by Arjan van de Ven <arjanv@redhat.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: compr_rtime.c,v 1.14 2004/06/23 16:34:40 havasi Exp $
  *
  *
  * Very simple lz77-ish encoder.
diff --git a/fs/jffs2/compr_rubin.c b/fs/jffs2/compr_rubin.c
index e792e67..ea0431e 100644
--- a/fs/jffs2/compr_rubin.c
+++ b/fs/jffs2/compr_rubin.c
@@ -1,23 +1,94 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001, 2002 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by Arjan van de Ven <arjanv@redhat.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: compr_rubin.c,v 1.20 2004/06/23 16:34:40 havasi Exp $
- *
  */
 
 #include <linux/string.h>
 #include <linux/types.h>
 #include <linux/jffs2.h>
-#include "compr_rubin.h"
-#include "histo_mips.h"
+#include <linux/errno.h>
 #include "compr.h"
 
+
+#define RUBIN_REG_SIZE   16
+#define UPPER_BIT_RUBIN    (((long) 1)<<(RUBIN_REG_SIZE-1))
+#define LOWER_BITS_RUBIN   ((((long) 1)<<(RUBIN_REG_SIZE-1))-1)
+
+
+#define BIT_DIVIDER_MIPS 1043
+static int bits_mips[8] = { 277,249,290,267,229,341,212,241}; /* mips32 */
+
+#include <linux/errno.h>
+
+struct pushpull {
+	unsigned char *buf;
+	unsigned int buflen;
+	unsigned int ofs;
+	unsigned int reserve;
+};
+
+struct rubin_state {
+	unsigned long p;
+	unsigned long q;
+	unsigned long rec_q;
+	long bit_number;
+	struct pushpull pp;
+	int bit_divider;
+	int bits[8];
+};
+
+static inline void init_pushpull(struct pushpull *pp, char *buf, unsigned buflen, unsigned ofs, unsigned reserve)
+{
+	pp->buf = buf;
+	pp->buflen = buflen;
+	pp->ofs = ofs;
+	pp->reserve = reserve;
+}
+
+static inline int pushbit(struct pushpull *pp, int bit, int use_reserved)
+{
+	if (pp->ofs >= pp->buflen - (use_reserved?0:pp->reserve)) {
+		return -ENOSPC;
+	}
+
+	if (bit) {
+		pp->buf[pp->ofs >> 3] |= (1<<(7-(pp->ofs &7)));
+	}
+	else {
+		pp->buf[pp->ofs >> 3] &= ~(1<<(7-(pp->ofs &7)));
+	}
+	pp->ofs++;
+
+	return 0;
+}
+
+static inline int pushedbits(struct pushpull *pp)
+{
+	return pp->ofs;
+}
+
+static inline int pullbit(struct pushpull *pp)
+{
+	int bit;
+
+	bit = (pp->buf[pp->ofs >> 3] >> (7-(pp->ofs & 7))) & 1;
+
+	pp->ofs++;
+	return bit;
+}
+
+static inline int pulledbits(struct pushpull *pp)
+{
+	return pp->ofs;
+}
+
+
 static void init_rubin(struct rubin_state *rs, int div, int *bits)
 {
 	int c;
diff --git a/fs/jffs2/compr_rubin.h b/fs/jffs2/compr_rubin.h
deleted file mode 100644
index bf1a934..0000000
--- a/fs/jffs2/compr_rubin.h
+++ /dev/null
@@ -1,21 +0,0 @@
-/* Rubin encoder/decoder header       */
-/* work started at   : aug   3, 1994  */
-/* last modification : aug  15, 1994  */
-/* $Id: compr_rubin.h,v 1.7 2005/11/07 11:14:38 gleixner Exp $ */
-
-#include "pushpull.h"
-
-#define RUBIN_REG_SIZE   16
-#define UPPER_BIT_RUBIN    (((long) 1)<<(RUBIN_REG_SIZE-1))
-#define LOWER_BITS_RUBIN   ((((long) 1)<<(RUBIN_REG_SIZE-1))-1)
-
-
-struct rubin_state {
-	unsigned long p;
-	unsigned long q;
-	unsigned long rec_q;
-	long bit_number;
-	struct pushpull pp;
-	int bit_divider;
-	int bits[8];
-};
diff --git a/fs/jffs2/compr_zlib.c b/fs/jffs2/compr_zlib.c
index 0c1fc6e..2b87fcc 100644
--- a/fs/jffs2/compr_zlib.c
+++ b/fs/jffs2/compr_zlib.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: compr_zlib.c,v 1.32 2005/11/07 11:14:38 gleixner Exp $
- *
  */
 
 #if !defined(__KERNEL__) && !defined(__ECOS)
diff --git a/fs/jffs2/comprtest.c b/fs/jffs2/comprtest.c
deleted file mode 100644
index f0fb8be..0000000
--- a/fs/jffs2/comprtest.c
+++ /dev/null
@@ -1,307 +0,0 @@
-/* $Id: comprtest.c,v 1.6 2005/11/07 11:14:38 gleixner Exp $ */
-
-#include <linux/kernel.h>
-#include <linux/string.h>
-#include <linux/module.h>
-#include <asm/types.h>
-#if 0
-#define TESTDATA_LEN 512
-static unsigned char testdata[TESTDATA_LEN] = {
- 0x7f, 0x45, 0x4c, 0x46, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
- 0x02, 0x00, 0x03, 0x00, 0x01, 0x00, 0x00, 0x00, 0x60, 0x83, 0x04, 0x08, 0x34, 0x00, 0x00, 0x00,
- 0xb0, 0x29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x34, 0x00, 0x20, 0x00, 0x06, 0x00, 0x28, 0x00,
- 0x1e, 0x00, 0x1b, 0x00, 0x06, 0x00, 0x00, 0x00, 0x34, 0x00, 0x00, 0x00, 0x34, 0x80, 0x04, 0x08,
- 0x34, 0x80, 0x04, 0x08, 0xc0, 0x00, 0x00, 0x00, 0xc0, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
- 0x04, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0xf4, 0x00, 0x00, 0x00, 0xf4, 0x80, 0x04, 0x08,
- 0xf4, 0x80, 0x04, 0x08, 0x13, 0x00, 0x00, 0x00, 0x13, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
- 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0x04, 0x08,
- 0x00, 0x80, 0x04, 0x08, 0x0d, 0x05, 0x00, 0x00, 0x0d, 0x05, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00,
- 0x00, 0x10, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x10, 0x05, 0x00, 0x00, 0x10, 0x95, 0x04, 0x08,
- 0x10, 0x95, 0x04, 0x08, 0xe8, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
- 0x00, 0x10, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x58, 0x05, 0x00, 0x00, 0x58, 0x95, 0x04, 0x08,
- 0x58, 0x95, 0x04, 0x08, 0xa0, 0x00, 0x00, 0x00, 0xa0, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00,
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-#else
-#define TESTDATA_LEN 3481
-static unsigned char testdata[TESTDATA_LEN] = {
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- 0x73, 0x74, 0x2e, 0x73, 0x74, 0x5f, 0x73, 0x69, 0x7a, 0x65, 0x20, 0x21, 0x3d, 0x20, 0x73, 0x69,
- 0x7a, 0x65, 0x29, 0x20, 0x7b, 0x0a, 0x09, 0x09, 0x70, 0x72, 0x69, 0x6e, 0x74, 0x66, 0x28, 0x22,
- 0x28, 0x25, 0x64, 0x29, 0x20, 0x64, 0x6f, 0x5f, 0x73, 0x74, 0x61, 0x74, 0x3a, 0x20, 0x25, 0x73,
- 0x20, 0x77, 0x72, 0x6f, 0x6e, 0x67, 0x20, 0x73, 0x69, 0x7a, 0x65, 0x20, 0x25, 0x64, 0x20, 0x25,
- 0x64, 0x5c, 0x6e, 0x22, 0x2c, 0x20, 0x0a, 0x09, 0x09, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20, 0x20,
- 0x6c, 0x69, 0x6e, 0x65, 0x5f, 0x63, 0x6f, 0x75, 0x6e, 0x74, 0x2c, 0x20, 0x66, 0x6e, 0x61, 0x6d,
- 0x65, 0x2c, 0x20, 0x28, 0x69, 0x6e, 0x74, 0x29, 0x73, 0x74, 0x2e, 0x73, 0x74, 0x5f, 0x73, 0x69,
- 0x7a, 0x65, 0x2c, 0x20, 0x73, 0x69, 0x7a, 0x65, 0x29, 0x3b, 0x0a, 0x09, 0x7d, 0x0a, 0x7d, 0x0a,
- 0x0a, 0x76, 0x6f, 0x69, 0x64, 0x20, 0x64, 0x6f, 0x5f, 0x63, 0x72, 0x65, 0x61, 0x74, 0x65, 0x28,
- 0x63, 0x68, 0x61, 0x72, 0x20, 0x2a, 0x66, 0x6e, 0x61, 0x6d, 0x65, 0x2c, 0x20, 0x69, 0x6e, 0x74,
- 0x20, 0x73, 0x69, 0x7a, 0x65, 0x29, 0x0a, 0x7b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x6f, 0x70, 0x65,
- 0x6e, 0x28, 0x66, 0x6e, 0x61, 0x6d, 0x65, 0x2c, 0x20, 0x35, 0x30, 0x30, 0x30, 0x2c, 0x20, 0x73,
- 0x69, 0x7a, 0x65, 0x29, 0x3b, 0x0a, 0x09, 0x64, 0x6f, 0x5f, 0x63, 0x6c, 0x6f, 0x73, 0x65, 0x28,
- 0x35, 0x30, 0x30, 0x30, 0x29, 0x3b, 0x0a, 0x7d, 0x0a
-};
-#endif
-static unsigned char comprbuf[TESTDATA_LEN];
-static unsigned char decomprbuf[TESTDATA_LEN];
-
-int jffs2_decompress(unsigned char comprtype, unsigned char *cdata_in,
-		     unsigned char *data_out, uint32_t cdatalen, uint32_t datalen);
-unsigned char jffs2_compress(unsigned char *data_in, unsigned char *cpage_out,
-			     uint32_t *datalen, uint32_t *cdatalen);
-
-int init_module(void ) {
-	unsigned char comprtype;
-	uint32_t c, d;
-	int ret;
-
-	printk("Original data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
-	       testdata[0],testdata[1],testdata[2],testdata[3],
-	       testdata[4],testdata[5],testdata[6],testdata[7],
-	       testdata[8],testdata[9],testdata[10],testdata[11],
-	       testdata[12],testdata[13],testdata[14],testdata[15]);
-	d = TESTDATA_LEN;
-	c = TESTDATA_LEN;
-	comprtype = jffs2_compress(testdata, comprbuf, &d, &c);
-
-	printk("jffs2_compress used compression type %d. Compressed size %d, uncompressed size %d\n",
-	       comprtype, c, d);
-	printk("Compressed data: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
-	       comprbuf[0],comprbuf[1],comprbuf[2],comprbuf[3],
-	       comprbuf[4],comprbuf[5],comprbuf[6],comprbuf[7],
-	       comprbuf[8],comprbuf[9],comprbuf[10],comprbuf[11],
-	       comprbuf[12],comprbuf[13],comprbuf[14],comprbuf[15]);
-
-	ret = jffs2_decompress(comprtype, comprbuf, decomprbuf, c, d);
-	printk("jffs2_decompress returned %d\n", ret);
-	printk("Decompressed data:  %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
-	       decomprbuf[0],decomprbuf[1],decomprbuf[2],decomprbuf[3],
-	       decomprbuf[4],decomprbuf[5],decomprbuf[6],decomprbuf[7],
-	       decomprbuf[8],decomprbuf[9],decomprbuf[10],decomprbuf[11],
-	       decomprbuf[12],decomprbuf[13],decomprbuf[14],decomprbuf[15]);
-	if (memcmp(decomprbuf, testdata, d))
-		printk("Compression and decompression corrupted data\n");
-	else
-		printk("Compression good for %d bytes\n", d);
-	return 1;
-}
diff --git a/fs/jffs2/debug.c b/fs/jffs2/debug.c
index 4189e4a..3a32c64 100644
--- a/fs/jffs2/debug.c
+++ b/fs/jffs2/debug.c
@@ -1,15 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: debug.c,v 1.12 2005/11/07 11:14:39 gleixner Exp $
- *
  */
+
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/pagemap.h>
diff --git a/fs/jffs2/debug.h b/fs/jffs2/debug.h
index f89c85d..2a49f2c 100644
--- a/fs/jffs2/debug.h
+++ b/fs/jffs2/debug.h
@@ -1,15 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: debug.h,v 1.21 2005/11/07 11:14:39 gleixner Exp $
- *
  */
+
 #ifndef _JFFS2_DEBUG_H_
 #define _JFFS2_DEBUG_H_
 
diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 9fa2e27..c1dfca3 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: dir.c,v 1.90 2005/11/07 11:14:39 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/erase.c b/fs/jffs2/erase.c
index ad01210..66e7c2f 100644
--- a/fs/jffs2/erase.c
+++ b/fs/jffs2/erase.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: erase.c,v 1.85 2005/09/20 14:53:15 dedekind Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -333,7 +331,7 @@ static int jffs2_block_check_erase(struct jffs2_sb_info *c, struct jffs2_erasebl
 
 		*bad_offset = ofs;
 
-		ret = jffs2_flash_read(c, ofs, readlen, &retlen, ebuf);
+		ret = c->mtd->read(c->mtd, ofs, readlen, &retlen, ebuf);
 		if (ret) {
 			printk(KERN_WARNING "Read of newly-erased block at 0x%08x failed: %d. Putting on bad_list\n", ofs, ret);
 			goto fail;
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c
index e82eeaf..9987127 100644
--- a/fs/jffs2/file.c
+++ b/fs/jffs2/file.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: file.c,v 1.104 2005/10/18 23:29:35 tpoynor Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/fs.c b/fs/jffs2/fs.c
index 8a649f6..1d3b7a9 100644
--- a/fs/jffs2/fs.c
+++ b/fs/jffs2/fs.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: fs.c,v 1.66 2005/09/27 13:17:29 dedekind Exp $
- *
  */
 
 #include <linux/capability.h>
diff --git a/fs/jffs2/gc.c b/fs/jffs2/gc.c
index 3a3cf22..2d99e06 100644
--- a/fs/jffs2/gc.c
+++ b/fs/jffs2/gc.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: gc.c,v 1.155 2005/11/07 11:14:39 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -144,7 +142,8 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
 			       c->unchecked_size);
 			jffs2_dbg_dump_block_lists_nolock(c);
 			spin_unlock(&c->erase_completion_lock);
-			BUG();
+			up(&c->alloc_sem);
+			return -ENOSPC;
 		}
 
 		spin_unlock(&c->erase_completion_lock);
diff --git a/fs/jffs2/ioctl.c b/fs/jffs2/ioctl.c
index 6909983..f4d525b 100644
--- a/fs/jffs2/ioctl.c
+++ b/fs/jffs2/ioctl.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: ioctl.c,v 1.10 2005/11/07 11:14:40 gleixner Exp $
- *
  */
 
 #include <linux/fs.h>
diff --git a/fs/jffs2/jffs2_fs_i.h b/fs/jffs2/jffs2_fs_i.h
index 3a56607..0b78fdc 100644
--- a/fs/jffs2/jffs2_fs_i.h
+++ b/fs/jffs2/jffs2_fs_i.h
@@ -1,4 +1,13 @@
-/* $Id: jffs2_fs_i.h,v 1.19 2005/11/07 11:14:52 gleixner Exp $ */
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 2001-2007 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@infradead.org>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
 
 #ifndef _JFFS2_FS_I
 #define _JFFS2_FS_I
diff --git a/fs/jffs2/jffs2_fs_sb.h b/fs/jffs2/jffs2_fs_sb.h
index ea88f69..b13298a 100644
--- a/fs/jffs2/jffs2_fs_sb.h
+++ b/fs/jffs2/jffs2_fs_sb.h
@@ -1,4 +1,13 @@
-/* $Id: jffs2_fs_sb.h,v 1.54 2005/09/21 13:37:34 dedekind Exp $ */
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 2001-2007 Red Hat, Inc.
+ *
+ * Created by David Woodhouse <dwmw2@infradead.org>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
 
 #ifndef _JFFS2_FS_SB
 #define _JFFS2_FS_SB
diff --git a/fs/jffs2/malloc.c b/fs/jffs2/malloc.c
index 83f9881..35c1a5e 100644
--- a/fs/jffs2/malloc.c
+++ b/fs/jffs2/malloc.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: malloc.c,v 1.31 2005/11/07 11:14:40 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/nodelist.c b/fs/jffs2/nodelist.c
index 5a6b4d6..4bf8608 100644
--- a/fs/jffs2/nodelist.c
+++ b/fs/jffs2/nodelist.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodelist.c,v 1.115 2005/11/07 11:14:40 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -54,7 +52,7 @@ void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new
 	*prev = new;
 }
 
-void jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint32_t size)
+uint32_t jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint32_t size)
 {
 	struct jffs2_node_frag *frag = jffs2_lookup_node_frag(list, size);
 
@@ -76,18 +74,24 @@ void jffs2_truncate_fragtree(struct jffs2_sb_info *c, struct rb_root *list, uint
 	}
 
 	if (size == 0)
-		return;
+		return 0;
 
-	/*
-	 * If the last fragment starts at the RAM page boundary, it is
-	 * REF_PRISTINE irrespective of its size.
-	 */
 	frag = frag_last(list);
+
+	/* Sanity check for truncation to longer than we started with... */
+	if (!frag)
+		return 0;
+	if (frag->ofs + frag->size < size)
+		return frag->ofs + frag->size;
+
+	/* If the last fragment starts at the RAM page boundary, it is
+	 * REF_PRISTINE irrespective of its size. */
 	if (frag->node && (frag->ofs & (PAGE_CACHE_SIZE - 1)) == 0) {
 		dbg_fragtree2("marking the last fragment 0x%08x-0x%08x REF_PRISTINE.\n",
 			frag->ofs, frag->ofs + frag->size);
 		frag->node->raw->flash_offset = ref_offset(frag->node->raw) | REF_PRISTINE;
 	}
+	return size;
 }
 
 static void jffs2_obsolete_node_frag(struct jffs2_sb_info *c,
@@ -397,466 +401,6 @@ int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_in
 	return 0;
 }
 
-/*
- * Check the data CRC of the node.
- *
- * Returns: 0 if the data CRC is correct;
- * 	    1 - if incorrect;
- *	    error code if an error occured.
- */
-static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info *tn)
-{
-	struct jffs2_raw_node_ref *ref = tn->fn->raw;
-	int err = 0, pointed = 0;
-	struct jffs2_eraseblock *jeb;
-	unsigned char *buffer;
-	uint32_t crc, ofs, len;
-	size_t retlen;
-
-	BUG_ON(tn->csize == 0);
-
-	if (!jffs2_is_writebuffered(c))
-		goto adj_acc;
-
-	/* Calculate how many bytes were already checked */
-	ofs = ref_offset(ref) + sizeof(struct jffs2_raw_inode);
-	len = ofs % c->wbuf_pagesize;
-	if (likely(len))
-		len = c->wbuf_pagesize - len;
-
-	if (len >= tn->csize) {
-		dbg_readinode("no need to check node at %#08x, data length %u, data starts at %#08x - it has already been checked.\n",
-			ref_offset(ref), tn->csize, ofs);
-		goto adj_acc;
-	}
-
-	ofs += len;
-	len = tn->csize - len;
-
-	dbg_readinode("check node at %#08x, data length %u, partial CRC %#08x, correct CRC %#08x, data starts at %#08x, start checking from %#08x - %u bytes.\n",
-		ref_offset(ref), tn->csize, tn->partial_crc, tn->data_crc, ofs - len, ofs, len);
-
-#ifndef __ECOS
-	/* TODO: instead, incapsulate point() stuff to jffs2_flash_read(),
-	 * adding and jffs2_flash_read_end() interface. */
-	if (c->mtd->point) {
-		err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
-		if (!err && retlen < tn->csize) {
-			JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
-			c->mtd->unpoint(c->mtd, buffer, ofs, len);
-		} else if (err)
-			JFFS2_WARNING("MTD point failed: error code %d.\n", err);
-		else
-			pointed = 1; /* succefully pointed to device */
-	}
-#endif
-
-	if (!pointed) {
-		buffer = kmalloc(len, GFP_KERNEL);
-		if (unlikely(!buffer))
-			return -ENOMEM;
-
-		/* TODO: this is very frequent pattern, make it a separate
-		 * routine */
-		err = jffs2_flash_read(c, ofs, len, &retlen, buffer);
-		if (err) {
-			JFFS2_ERROR("can not read %d bytes from 0x%08x, error code: %d.\n", len, ofs, err);
-			goto free_out;
-		}
-
-		if (retlen != len) {
-			JFFS2_ERROR("short read at %#08x: %zd instead of %d.\n", ofs, retlen, len);
-			err = -EIO;
-			goto free_out;
-		}
-	}
-
-	/* Continue calculating CRC */
-	crc = crc32(tn->partial_crc, buffer, len);
-	if(!pointed)
-		kfree(buffer);
-#ifndef __ECOS
-	else
-		c->mtd->unpoint(c->mtd, buffer, ofs, len);
-#endif
-
-	if (crc != tn->data_crc) {
-		JFFS2_NOTICE("wrong data CRC in data node at 0x%08x: read %#08x, calculated %#08x.\n",
-			ofs, tn->data_crc, crc);
-		return 1;
-	}
-
-adj_acc:
-	jeb = &c->blocks[ref->flash_offset / c->sector_size];
-	len = ref_totlen(c, jeb, ref);
-
-	/*
-	 * Mark the node as having been checked and fix the
-	 * accounting accordingly.
-	 */
-	spin_lock(&c->erase_completion_lock);
-	jeb->used_size += len;
-	jeb->unchecked_size -= len;
-	c->used_size += len;
-	c->unchecked_size -= len;
-	spin_unlock(&c->erase_completion_lock);
-
-	return 0;
-
-free_out:
-	if(!pointed)
-		kfree(buffer);
-#ifndef __ECOS
-	else
-		c->mtd->unpoint(c->mtd, buffer, ofs, len);
-#endif
-	return err;
-}
-
-/*
- * Helper function for jffs2_add_older_frag_to_fragtree().
- *
- * Checks the node if we are in the checking stage.
- */
-static int check_node(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn)
-{
-	int ret;
-
-	BUG_ON(ref_obsolete(tn->fn->raw));
-
-	/* We only check the data CRC of unchecked nodes */
-	if (ref_flags(tn->fn->raw) != REF_UNCHECKED)
-		return 0;
-
-	dbg_fragtree2("check node %#04x-%#04x, phys offs %#08x.\n",
-		tn->fn->ofs, tn->fn->ofs + tn->fn->size, ref_offset(tn->fn->raw));
-
-	ret = check_node_data(c, tn);
-	if (unlikely(ret < 0)) {
-		JFFS2_ERROR("check_node_data() returned error: %d.\n",
-			ret);
-	} else if (unlikely(ret > 0)) {
-		dbg_fragtree2("CRC error, mark it obsolete.\n");
-		jffs2_mark_node_obsolete(c, tn->fn->raw);
-	}
-
-	return ret;
-}
-
-/*
- * Helper function for jffs2_add_older_frag_to_fragtree().
- *
- * Called when the new fragment that is being inserted
- * splits a hole fragment.
- */
-static int split_hole(struct jffs2_sb_info *c, struct rb_root *root,
-		      struct jffs2_node_frag *newfrag, struct jffs2_node_frag *hole)
-{
-	dbg_fragtree2("fragment %#04x-%#04x splits the hole %#04x-%#04x\n",
-		newfrag->ofs, newfrag->ofs + newfrag->size, hole->ofs, hole->ofs + hole->size);
-
-	if (hole->ofs == newfrag->ofs) {
-		/*
-		 * Well, the new fragment actually starts at the same offset as
-		 * the hole.
-		 */
-		if (hole->ofs + hole->size > newfrag->ofs + newfrag->size) {
-			/*
-			 * We replace the overlapped left part of the hole by
-			 * the new node.
-			 */
-
-			dbg_fragtree2("insert fragment %#04x-%#04x and cut the left part of the hole\n",
-				newfrag->ofs, newfrag->ofs + newfrag->size);
-			rb_replace_node(&hole->rb, &newfrag->rb, root);
-
-			hole->ofs += newfrag->size;
-			hole->size -= newfrag->size;
-
-			/*
-			 * We know that 'hole' should be the right hand
-			 * fragment.
-			 */
-			jffs2_fragtree_insert(hole, newfrag);
-			rb_insert_color(&hole->rb, root);
-		} else {
-			/*
-			 * Ah, the new fragment is of the same size as the hole.
-			 * Relace the hole by it.
-			 */
-			dbg_fragtree2("insert fragment %#04x-%#04x and overwrite hole\n",
-				newfrag->ofs, newfrag->ofs + newfrag->size);
-			rb_replace_node(&hole->rb, &newfrag->rb, root);
-			jffs2_free_node_frag(hole);
-		}
-	} else {
-		/* The new fragment lefts some hole space at the left */
-
-		struct jffs2_node_frag * newfrag2 = NULL;
-
-		if (hole->ofs + hole->size > newfrag->ofs + newfrag->size) {
-			/* The new frag also lefts some space at the right */
-			newfrag2 = new_fragment(NULL, newfrag->ofs +
-				newfrag->size, hole->ofs + hole->size
-				- newfrag->ofs - newfrag->size);
-			if (unlikely(!newfrag2)) {
-				jffs2_free_node_frag(newfrag);
-				return -ENOMEM;
-			}
-		}
-
-		hole->size = newfrag->ofs - hole->ofs;
-		dbg_fragtree2("left the hole %#04x-%#04x at the left and inserd fragment %#04x-%#04x\n",
-			hole->ofs, hole->ofs + hole->size, newfrag->ofs, newfrag->ofs + newfrag->size);
-
-		jffs2_fragtree_insert(newfrag, hole);
-		rb_insert_color(&newfrag->rb, root);
-
-		if (newfrag2) {
-			dbg_fragtree2("left the hole %#04x-%#04x at the right\n",
-				newfrag2->ofs, newfrag2->ofs + newfrag2->size);
-			jffs2_fragtree_insert(newfrag2, newfrag);
-			rb_insert_color(&newfrag2->rb, root);
-		}
-	}
-
-	return 0;
-}
-
-/*
- * This function is used when we build inode. It expects the nodes are passed
- * in the decreasing version order. The whole point of this is to improve the
- * inodes checking on NAND: we check the nodes' data CRC only when they are not
- * obsoleted. Previously, add_frag_to_fragtree() function was used and
- * nodes were passed to it in the increasing version ordes and CRCs of all
- * nodes were checked.
- *
- * Note: tn->fn->size shouldn't be zero.
- *
- * Returns 0 if the node was inserted
- *         1 if it wasn't inserted (since it is obsolete)
- *         < 0 an if error occured
- */
-int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
-				     struct jffs2_tmp_dnode_info *tn)
-{
-	struct jffs2_node_frag *this, *newfrag;
-	uint32_t lastend;
-	struct jffs2_full_dnode *fn = tn->fn;
-	struct rb_root *root = &f->fragtree;
-	uint32_t fn_size = fn->size, fn_ofs = fn->ofs;
-	int err, checked = 0;
-	int ref_flag;
-
-	dbg_fragtree("insert fragment %#04x-%#04x, ver %u\n", fn_ofs, fn_ofs + fn_size, tn->version);
-
-	/* Skip all the nodes which are completed before this one starts */
-	this = jffs2_lookup_node_frag(root, fn_ofs);
-	if (this)
-		dbg_fragtree2("'this' found %#04x-%#04x (%s)\n", this->ofs, this->ofs + this->size, this->node ? "data" : "hole");
-
-	if (this)
-		lastend = this->ofs + this->size;
-	else
-		lastend = 0;
-
-	/* Detect the preliminary type of node */
-	if (fn->size >= PAGE_CACHE_SIZE)
-		ref_flag = REF_PRISTINE;
-	else
-		ref_flag = REF_NORMAL;
-
-	/* See if we ran off the end of the root */
-	if (lastend <= fn_ofs) {
-		/* We did */
-
-		/*
-		 * We are going to insert the new node into the
-		 * fragment tree, so check it.
-		 */
-		err = check_node(c, f, tn);
-		if (err != 0)
-			return err;
-
-		fn->frags = 1;
-
-		newfrag = new_fragment(fn, fn_ofs, fn_size);
-		if (unlikely(!newfrag))
-			return -ENOMEM;
-
-		err = no_overlapping_node(c, root, newfrag, this, lastend);
-		if (unlikely(err != 0)) {
-			jffs2_free_node_frag(newfrag);
-			return err;
-		}
-
-		goto out_ok;
-	}
-
-	fn->frags = 0;
-
-	while (1) {
-		/*
-		 * Here we have:
-		 * fn_ofs < this->ofs + this->size && fn_ofs >= this->ofs.
-		 *
-		 * Remember, 'this' has higher version, any non-hole node
-		 * which is already in the fragtree is newer then the newly
-		 * inserted.
-		 */
-		if (!this->node) {
-			/*
-			 * 'this' is the hole fragment, so at least the
-			 * beginning of the new fragment is valid.
-			 */
-
-			/*
-			 * We are going to insert the new node into the
-			 * fragment tree, so check it.
-			 */
-			if (!checked) {
-				err = check_node(c, f, tn);
-				if (unlikely(err != 0))
-					return err;
-				checked = 1;
-			}
-
-			if (this->ofs + this->size >= fn_ofs + fn_size) {
-				/* We split the hole on two parts */
-
-				fn->frags += 1;
-				newfrag = new_fragment(fn, fn_ofs, fn_size);
-				if (unlikely(!newfrag))
-					return -ENOMEM;
-
-				err = split_hole(c, root, newfrag, this);
-				if (unlikely(err))
-					return err;
-				goto out_ok;
-			}
-
-			/*
-			 * The beginning of the new fragment is valid since it
-			 * overlaps the hole node.
-			 */
-
-			ref_flag = REF_NORMAL;
-
-			fn->frags += 1;
-			newfrag = new_fragment(fn, fn_ofs,
-					this->ofs + this->size - fn_ofs);
-			if (unlikely(!newfrag))
-				return -ENOMEM;
-
-			if (fn_ofs == this->ofs) {
-				/*
-				 * The new node starts at the same offset as
-				 * the hole and supersieds the hole.
-				 */
-				dbg_fragtree2("add the new fragment instead of hole %#04x-%#04x, refcnt %d\n",
-					fn_ofs, fn_ofs + this->ofs + this->size - fn_ofs, fn->frags);
-
-				rb_replace_node(&this->rb, &newfrag->rb, root);
-				jffs2_free_node_frag(this);
-			} else {
-				/*
-				 * The hole becomes shorter as its right part
-				 * is supersieded by the new fragment.
-				 */
-				dbg_fragtree2("reduce size of hole %#04x-%#04x to %#04x-%#04x\n",
-					this->ofs, this->ofs + this->size, this->ofs, this->ofs + this->size - newfrag->size);
-
-				dbg_fragtree2("add new fragment %#04x-%#04x, refcnt %d\n", fn_ofs,
-					fn_ofs + this->ofs + this->size - fn_ofs, fn->frags);
-
-				this->size -= newfrag->size;
-				jffs2_fragtree_insert(newfrag, this);
-				rb_insert_color(&newfrag->rb, root);
-			}
-
-			fn_ofs += newfrag->size;
-			fn_size -= newfrag->size;
-			this = rb_entry(rb_next(&newfrag->rb),
-					struct jffs2_node_frag, rb);
-
-			dbg_fragtree2("switch to the next 'this' fragment: %#04x-%#04x %s\n",
-				this->ofs, this->ofs + this->size, this->node ? "(data)" : "(hole)");
-		}
-
-		/*
-		 * 'This' node is not the hole so it obsoletes the new fragment
-		 * either fully or partially.
-		 */
-		if (this->ofs + this->size >= fn_ofs + fn_size) {
-			/* The new node is obsolete, drop it */
-			if (fn->frags == 0) {
-				dbg_fragtree2("%#04x-%#04x is obsolete, mark it obsolete\n", fn_ofs, fn_ofs + fn_size);
-				ref_flag = REF_OBSOLETE;
-			}
-			goto out_ok;
-		} else {
-			struct jffs2_node_frag *new_this;
-
-			/* 'This' node obsoletes the beginning of the new node */
-			dbg_fragtree2("the beginning %#04x-%#04x is obsolete\n", fn_ofs, this->ofs + this->size);
-
-			ref_flag = REF_NORMAL;
-
-			fn_size -= this->ofs + this->size - fn_ofs;
-			fn_ofs = this->ofs + this->size;
-			dbg_fragtree2("now considering %#04x-%#04x\n", fn_ofs, fn_ofs + fn_size);
-
-			new_this = rb_entry(rb_next(&this->rb), struct jffs2_node_frag, rb);
-			if (!new_this) {
-				/*
-				 * There is no next fragment. Add the rest of
-				 * the new node as the right-hand child.
-				 */
-				if (!checked) {
-					err = check_node(c, f, tn);
-					if (unlikely(err != 0))
-						return err;
-					checked = 1;
-				}
-
-				fn->frags += 1;
-				newfrag = new_fragment(fn, fn_ofs, fn_size);
-				if (unlikely(!newfrag))
-					return -ENOMEM;
-
-				dbg_fragtree2("there are no more fragments, insert %#04x-%#04x\n",
-					newfrag->ofs, newfrag->ofs + newfrag->size);
-				rb_link_node(&newfrag->rb, &this->rb, &this->rb.rb_right);
-				rb_insert_color(&newfrag->rb, root);
-				goto out_ok;
-			} else {
-				this = new_this;
-				dbg_fragtree2("switch to the next 'this' fragment: %#04x-%#04x %s\n",
-					this->ofs, this->ofs + this->size, this->node ? "(data)" : "(hole)");
-			}
-		}
-	}
-
-out_ok:
-	BUG_ON(fn->size < PAGE_CACHE_SIZE && ref_flag == REF_PRISTINE);
-
-	if (ref_flag == REF_OBSOLETE) {
-		dbg_fragtree2("the node is obsolete now\n");
-		/* jffs2_mark_node_obsolete() will adjust space accounting */
-		jffs2_mark_node_obsolete(c, fn->raw);
-		return 1;
-	}
-
-	dbg_fragtree2("the node is \"%s\" now\n", ref_flag == REF_NORMAL ? "REF_NORMAL" : "REF_PRISTINE");
-
-	/* Space accounting was adjusted at check_node_data() */
-	spin_lock(&c->erase_completion_lock);
-	fn->raw->flash_offset = ref_offset(fn->raw) | ref_flag;
-	spin_unlock(&c->erase_completion_lock);
-
-	return 0;
-}
-
 void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state)
 {
 	spin_lock(&c->inocache_lock);
diff --git a/fs/jffs2/nodelist.h b/fs/jffs2/nodelist.h
index 4178b4b5..25126a0 100644
--- a/fs/jffs2/nodelist.h
+++ b/fs/jffs2/nodelist.h
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodelist.h,v 1.140 2005/09/07 08:34:54 havasi Exp $
- *
  */
 
 #ifndef __JFFS2_NODELIST_H__
@@ -40,6 +38,9 @@
 #define cpu_to_je32(x) ((jint32_t){x})
 #define cpu_to_jemode(x) ((jmode_t){os_to_jffs2_mode(x)})
 
+#define constant_cpu_to_je16(x) ((jint16_t){x})
+#define constant_cpu_to_je32(x) ((jint32_t){x})
+
 #define je16_to_cpu(x) ((x).v16)
 #define je32_to_cpu(x) ((x).v32)
 #define jemode_to_cpu(x) (jffs2_to_os_mode((x).m))
@@ -48,6 +49,9 @@
 #define cpu_to_je32(x) ((jint32_t){cpu_to_be32(x)})
 #define cpu_to_jemode(x) ((jmode_t){cpu_to_be32(os_to_jffs2_mode(x))})
 
+#define constant_cpu_to_je16(x) ((jint16_t){__constant_cpu_to_be16(x)})
+#define constant_cpu_to_je32(x) ((jint32_t){__constant_cpu_to_be32(x)})
+
 #define je16_to_cpu(x) (be16_to_cpu(x.v16))
 #define je32_to_cpu(x) (be32_to_cpu(x.v32))
 #define jemode_to_cpu(x) (be32_to_cpu(jffs2_to_os_mode((x).m)))
@@ -56,6 +60,9 @@
 #define cpu_to_je32(x) ((jint32_t){cpu_to_le32(x)})
 #define cpu_to_jemode(x) ((jmode_t){cpu_to_le32(os_to_jffs2_mode(x))})
 
+#define constant_cpu_to_je16(x) ((jint16_t){__constant_cpu_to_le16(x)})
+#define constant_cpu_to_je32(x) ((jint32_t){__constant_cpu_to_le32(x)})
+
 #define je16_to_cpu(x) (le16_to_cpu(x.v16))
 #define je32_to_cpu(x) (le32_to_cpu(x.v32))
 #define jemode_to_cpu(x) (le32_to_cpu(jffs2_to_os_mode((x).m)))
@@ -216,7 +223,20 @@ struct jffs2_tmp_dnode_info
 	uint32_t version;
 	uint32_t data_crc;
 	uint32_t partial_crc;
-	uint32_t csize;
+	uint16_t csize;
+	uint16_t overlapped;
+};
+
+/* Temporary data structure used during readinode. */
+struct jffs2_readinode_info
+{
+	struct rb_root tn_root;
+	struct jffs2_tmp_dnode_info *mdata_tn;
+	uint32_t highest_version;
+	uint32_t latest_mctime;
+	uint32_t mctime_ver;
+	struct jffs2_full_dirent *fds;
+	struct jffs2_raw_node_ref *latest_ref;
 };
 
 struct jffs2_full_dirent
@@ -319,6 +339,15 @@ static inline struct jffs2_node_frag *frag_last(struct rb_root *root)
 #define frag_right(frag) rb_entry((frag)->rb.rb_right, struct jffs2_node_frag, rb)
 #define frag_erase(frag, list) rb_erase(&frag->rb, list);
 
+#define tn_next(tn) rb_entry(rb_next(&(tn)->rb), struct jffs2_tmp_dnode_info, rb)
+#define tn_prev(tn) rb_entry(rb_prev(&(tn)->rb), struct jffs2_tmp_dnode_info, rb)
+#define tn_parent(tn) rb_entry(rb_parent(&(tn)->rb), struct jffs2_tmp_dnode_info, rb)
+#define tn_left(tn) rb_entry((tn)->rb.rb_left, struct jffs2_tmp_dnode_info, rb)
+#define tn_right(tn) rb_entry((tn)->rb.rb_right, struct jffs2_tmp_dnode_info, rb)
+#define tn_erase(tn, list) rb_erase(&tn->rb, list);
+#define tn_last(list) rb_entry(rb_last(list), struct jffs2_tmp_dnode_info, rb)
+#define tn_first(list) rb_entry(rb_first(list), struct jffs2_tmp_dnode_info, rb)
+
 /* nodelist.c */
 void jffs2_add_fd_to_list(struct jffs2_sb_info *c, struct jffs2_full_dirent *new, struct jffs2_full_dirent **list);
 void jffs2_set_inocache_state(struct jffs2_sb_info *c, struct jffs2_inode_cache *ic, int state);
@@ -333,8 +362,7 @@ struct rb_node *rb_next(struct rb_node *);
 struct rb_node *rb_prev(struct rb_node *);
 void rb_replace_node(struct rb_node *victim, struct rb_node *new, struct rb_root *root);
 int jffs2_add_full_dnode_to_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_full_dnode *fn);
-void jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
-int jffs2_add_older_frag_to_fragtree(struct jffs2_sb_info *c, struct jffs2_inode_info *f, struct jffs2_tmp_dnode_info *tn);
+uint32_t jffs2_truncate_fragtree (struct jffs2_sb_info *c, struct rb_root *list, uint32_t size);
 struct jffs2_raw_node_ref *jffs2_link_node_ref(struct jffs2_sb_info *c,
 					       struct jffs2_eraseblock *jeb,
 					       uint32_t ofs, uint32_t len,
diff --git a/fs/jffs2/nodemgmt.c b/fs/jffs2/nodemgmt.c
index d883769..dbc908a 100644
--- a/fs/jffs2/nodemgmt.c
+++ b/fs/jffs2/nodemgmt.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: nodemgmt.c,v 1.127 2005/09/20 15:49:12 dedekind Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -172,6 +170,11 @@ int jffs2_reserve_space_gc(struct jffs2_sb_info *c, uint32_t minsize,
 static void jffs2_close_nextblock(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
 
+	if (c->nextblock == NULL) {
+		D1(printk(KERN_DEBUG "jffs2_close_nextblock: Erase block at 0x%08x has already been placed in a list\n",
+		  jeb->offset));
+		return;
+	}
 	/* Check, if we have a dirty block now, or if it was dirty already */
 	if (ISDIRTY (jeb->wasted_size + jeb->dirty_size)) {
 		c->dirty_size += jeb->wasted_size;
diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h
index 8d92e45..80daea9 100644
--- a/fs/jffs2/os-linux.h
+++ b/fs/jffs2/os-linux.h
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2002-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: os-linux.h,v 1.64 2005/09/30 13:59:13 dedekind Exp $
- *
  */
 
 #ifndef __JFFS2_OS_LINUX_H__
diff --git a/fs/jffs2/pushpull.h b/fs/jffs2/pushpull.h
deleted file mode 100644
index c0c2a91..0000000
--- a/fs/jffs2/pushpull.h
+++ /dev/null
@@ -1,72 +0,0 @@
-/*
- * JFFS2 -- Journalling Flash File System, Version 2.
- *
- * Copyright (C) 2001, 2002 Red Hat, Inc.
- *
- * Created by David Woodhouse <dwmw2@infradead.org>
- *
- * For licensing information, see the file 'LICENCE' in this directory.
- *
- * $Id: pushpull.h,v 1.10 2004/11/16 20:36:11 dwmw2 Exp $
- *
- */
-
-#ifndef __PUSHPULL_H__
-#define __PUSHPULL_H__
-
-#include <linux/errno.h>
-
-struct pushpull {
-	unsigned char *buf;
-	unsigned int buflen;
-	unsigned int ofs;
-	unsigned int reserve;
-};
-
-
-static inline void init_pushpull(struct pushpull *pp, char *buf, unsigned buflen, unsigned ofs, unsigned reserve)
-{
-	pp->buf = buf;
-	pp->buflen = buflen;
-	pp->ofs = ofs;
-	pp->reserve = reserve;
-}
-
-static inline int pushbit(struct pushpull *pp, int bit, int use_reserved)
-{
-	if (pp->ofs >= pp->buflen - (use_reserved?0:pp->reserve)) {
-		return -ENOSPC;
-	}
-
-	if (bit) {
-		pp->buf[pp->ofs >> 3] |= (1<<(7-(pp->ofs &7)));
-	}
-	else {
-		pp->buf[pp->ofs >> 3] &= ~(1<<(7-(pp->ofs &7)));
-	}
-	pp->ofs++;
-
-	return 0;
-}
-
-static inline int pushedbits(struct pushpull *pp)
-{
-	return pp->ofs;
-}
-
-static inline int pullbit(struct pushpull *pp)
-{
-	int bit;
-
-	bit = (pp->buf[pp->ofs >> 3] >> (7-(pp->ofs & 7))) & 1;
-
-	pp->ofs++;
-	return bit;
-}
-
-static inline int pulledbits(struct pushpull *pp)
-{
-	return pp->ofs;
-}
-
-#endif /* __PUSHPULL_H__ */
diff --git a/fs/jffs2/read.c b/fs/jffs2/read.c
index f3b86da..cfe05c1 100644
--- a/fs/jffs2/read.c
+++ b/fs/jffs2/read.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: read.c,v 1.42 2005/11/07 11:14:41 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/readinode.c b/fs/jffs2/readinode.c
index 717a48c..6aff389 100644
--- a/fs/jffs2/readinode.c
+++ b/fs/jffs2/readinode.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: readinode.c,v 1.143 2005/11/07 11:14:41 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -22,30 +20,510 @@
 #include "nodelist.h"
 
 /*
- * Put a new tmp_dnode_info into the temporaty RB-tree, keeping the list in
- * order of increasing version.
+ * Check the data CRC of the node.
+ *
+ * Returns: 0 if the data CRC is correct;
+ * 	    1 - if incorrect;
+ *	    error code if an error occured.
  */
-static void jffs2_add_tn_to_tree(struct jffs2_tmp_dnode_info *tn, struct rb_root *list)
+static int check_node_data(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info *tn)
 {
-	struct rb_node **p = &list->rb_node;
-	struct rb_node * parent = NULL;
-	struct jffs2_tmp_dnode_info *this;
-
-	while (*p) {
-		parent = *p;
-		this = rb_entry(parent, struct jffs2_tmp_dnode_info, rb);
-
-		/* There may actually be a collision here, but it doesn't
-		   actually matter. As long as the two nodes with the same
-		   version are together, it's all fine. */
-		if (tn->version > this->version)
-			p = &(*p)->rb_left;
+	struct jffs2_raw_node_ref *ref = tn->fn->raw;
+	int err = 0, pointed = 0;
+	struct jffs2_eraseblock *jeb;
+	unsigned char *buffer;
+	uint32_t crc, ofs, len;
+	size_t retlen;
+
+	BUG_ON(tn->csize == 0);
+
+	if (!jffs2_is_writebuffered(c))
+		goto adj_acc;
+
+	/* Calculate how many bytes were already checked */
+	ofs = ref_offset(ref) + sizeof(struct jffs2_raw_inode);
+	len = ofs % c->wbuf_pagesize;
+	if (likely(len))
+		len = c->wbuf_pagesize - len;
+
+	if (len >= tn->csize) {
+		dbg_readinode("no need to check node at %#08x, data length %u, data starts at %#08x - it has already been checked.\n",
+			ref_offset(ref), tn->csize, ofs);
+		goto adj_acc;
+	}
+
+	ofs += len;
+	len = tn->csize - len;
+
+	dbg_readinode("check node at %#08x, data length %u, partial CRC %#08x, correct CRC %#08x, data starts at %#08x, start checking from %#08x - %u bytes.\n",
+		ref_offset(ref), tn->csize, tn->partial_crc, tn->data_crc, ofs - len, ofs, len);
+
+#ifndef __ECOS
+	/* TODO: instead, incapsulate point() stuff to jffs2_flash_read(),
+	 * adding and jffs2_flash_read_end() interface. */
+	if (c->mtd->point) {
+		err = c->mtd->point(c->mtd, ofs, len, &retlen, &buffer);
+		if (!err && retlen < tn->csize) {
+			JFFS2_WARNING("MTD point returned len too short: %zu instead of %u.\n", retlen, tn->csize);
+			c->mtd->unpoint(c->mtd, buffer, ofs, len);
+		} else if (err)
+			JFFS2_WARNING("MTD point failed: error code %d.\n", err);
 		else
-			p = &(*p)->rb_right;
+			pointed = 1; /* succefully pointed to device */
+	}
+#endif
+
+	if (!pointed) {
+		buffer = kmalloc(len, GFP_KERNEL);
+		if (unlikely(!buffer))
+			return -ENOMEM;
+
+		/* TODO: this is very frequent pattern, make it a separate
+		 * routine */
+		err = jffs2_flash_read(c, ofs, len, &retlen, buffer);
+		if (err) {
+			JFFS2_ERROR("can not read %d bytes from 0x%08x, error code: %d.\n", len, ofs, err);
+			goto free_out;
+		}
+
+		if (retlen != len) {
+			JFFS2_ERROR("short read at %#08x: %zd instead of %d.\n", ofs, retlen, len);
+			err = -EIO;
+			goto free_out;
+		}
+	}
+
+	/* Continue calculating CRC */
+	crc = crc32(tn->partial_crc, buffer, len);
+	if(!pointed)
+		kfree(buffer);
+#ifndef __ECOS
+	else
+		c->mtd->unpoint(c->mtd, buffer, ofs, len);
+#endif
+
+	if (crc != tn->data_crc) {
+		JFFS2_NOTICE("wrong data CRC in data node at 0x%08x: read %#08x, calculated %#08x.\n",
+			ofs, tn->data_crc, crc);
+		return 1;
 	}
 
-	rb_link_node(&tn->rb, parent, p);
-	rb_insert_color(&tn->rb, list);
+adj_acc:
+	jeb = &c->blocks[ref->flash_offset / c->sector_size];
+	len = ref_totlen(c, jeb, ref);
+	/* If it should be REF_NORMAL, it'll get marked as such when
+	   we build the fragtree, shortly. No need to worry about GC
+	   moving it while it's marked REF_PRISTINE -- GC won't happen
+	   till we've finished checking every inode anyway. */
+	ref->flash_offset |= REF_PRISTINE;
+	/*
+	 * Mark the node as having been checked and fix the
+	 * accounting accordingly.
+	 */
+	spin_lock(&c->erase_completion_lock);
+	jeb->used_size += len;
+	jeb->unchecked_size -= len;
+	c->used_size += len;
+	c->unchecked_size -= len;
+	jffs2_dbg_acct_paranoia_check_nolock(c, jeb);
+	spin_unlock(&c->erase_completion_lock);
+
+	return 0;
+
+free_out:
+	if(!pointed)
+		kfree(buffer);
+#ifndef __ECOS
+	else
+		c->mtd->unpoint(c->mtd, buffer, ofs, len);
+#endif
+	return err;
+}
+
+/*
+ * Helper function for jffs2_add_older_frag_to_fragtree().
+ *
+ * Checks the node if we are in the checking stage.
+ */
+static int check_tn_node(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info *tn)
+{
+	int ret;
+
+	BUG_ON(ref_obsolete(tn->fn->raw));
+
+	/* We only check the data CRC of unchecked nodes */
+	if (ref_flags(tn->fn->raw) != REF_UNCHECKED)
+		return 0;
+
+	dbg_readinode("check node %#04x-%#04x, phys offs %#08x\n",
+		      tn->fn->ofs, tn->fn->ofs + tn->fn->size, ref_offset(tn->fn->raw));
+
+	ret = check_node_data(c, tn);
+	if (unlikely(ret < 0)) {
+		JFFS2_ERROR("check_node_data() returned error: %d.\n",
+			ret);
+	} else if (unlikely(ret > 0)) {
+		dbg_readinode("CRC error, mark it obsolete.\n");
+		jffs2_mark_node_obsolete(c, tn->fn->raw);
+	}
+
+	return ret;
+}
+
+static struct jffs2_tmp_dnode_info *jffs2_lookup_tn(struct rb_root *tn_root, uint32_t offset)
+{
+	struct rb_node *next;
+	struct jffs2_tmp_dnode_info *tn = NULL;
+
+	dbg_readinode("root %p, offset %d\n", tn_root, offset);
+
+	next = tn_root->rb_node;
+
+	while (next) {
+		tn = rb_entry(next, struct jffs2_tmp_dnode_info, rb);
+
+		if (tn->fn->ofs < offset)
+			next = tn->rb.rb_right;
+		else if (tn->fn->ofs >= offset)
+			next = tn->rb.rb_left;
+		else
+			break;
+	}
+
+	return tn;
+}
+
+
+static void jffs2_kill_tn(struct jffs2_sb_info *c, struct jffs2_tmp_dnode_info *tn)
+{
+	jffs2_mark_node_obsolete(c, tn->fn->raw);
+	jffs2_free_full_dnode(tn->fn);
+	jffs2_free_tmp_dnode_info(tn);
+}
+/*
+ * This function is used when we read an inode. Data nodes arrive in
+ * arbitrary order -- they may be older or newer than the nodes which
+ * are already in the tree. Where overlaps occur, the older node can
+ * be discarded as long as the newer passes the CRC check. We don't
+ * bother to keep track of holes in this rbtree, and neither do we deal
+ * with frags -- we can have multiple entries starting at the same
+ * offset, and the one with the smallest length will come first in the
+ * ordering.
+ *
+ * Returns 0 if the node was inserted
+ *         1 if the node is obsolete (because we can't mark it so yet)
+ *         < 0 an if error occurred
+ */
+static int jffs2_add_tn_to_tree(struct jffs2_sb_info *c,
+				struct jffs2_readinode_info *rii,
+				struct jffs2_tmp_dnode_info *tn)
+{
+	uint32_t fn_end = tn->fn->ofs + tn->fn->size;
+	struct jffs2_tmp_dnode_info *insert_point = NULL, *this;
+
+	dbg_readinode("insert fragment %#04x-%#04x, ver %u\n", tn->fn->ofs, fn_end, tn->version);
+
+	/* If a node has zero dsize, we only have to keep if it if it might be the
+	   node with highest version -- i.e. the one which will end up as f->metadata.
+	   Note that such nodes won't be REF_UNCHECKED since there are no data to
+	   check anyway. */
+	if (!tn->fn->size) {
+		if (rii->mdata_tn) {
+			/* We had a candidate mdata node already */
+			dbg_readinode("kill old mdata with ver %d\n", rii->mdata_tn->version);
+			jffs2_kill_tn(c, rii->mdata_tn);
+		}
+		rii->mdata_tn = tn;
+		dbg_readinode("keep new mdata with ver %d\n", tn->version);
+		return 0;
+	}
+
+	/* Find the earliest node which _may_ be relevant to this one */
+	this = jffs2_lookup_tn(&rii->tn_root, tn->fn->ofs);
+	if (!this) {
+		/* First addition to empty tree. $DEITY how I love the easy cases */
+		rb_link_node(&tn->rb, NULL, &rii->tn_root.rb_node);
+		rb_insert_color(&tn->rb, &rii->tn_root);
+		dbg_readinode("keep new frag\n");
+		return 0;
+	}
+
+	/* If we add a new node it'll be somewhere under here. */
+	insert_point = this;
+
+	/* If the node is coincident with another at a lower address,
+	   back up until the other node is found. It may be relevant */
+	while (tn->overlapped)
+		tn = tn_prev(tn);
+
+	dbg_readinode("'this' found %#04x-%#04x (%s)\n", this->fn->ofs, this->fn->ofs + this->fn->size, this->fn ? "data" : "hole");
+
+	while (this) {
+		if (this->fn->ofs > fn_end)
+			break;
+		dbg_readinode("Ponder this ver %d, 0x%x-0x%x\n",
+			      this->version, this->fn->ofs, this->fn->size);
+
+		if (this->version == tn->version) {
+			/* Version number collision means REF_PRISTINE GC. Accept either of them
+			   as long as the CRC is correct. Check the one we have already...  */
+			if (!check_tn_node(c, this)) {
+				/* The one we already had was OK. Keep it and throw away the new one */
+				dbg_readinode("Like old node. Throw away new\n");
+				jffs2_kill_tn(c, tn);
+				return 0;
+			} else {
+				/* Who cares if the new one is good; keep it for now anyway. */
+				rb_replace_node(&this->rb, &tn->rb, &rii->tn_root);
+				/* Same overlapping from in front and behind */
+				tn->overlapped = this->overlapped;
+				jffs2_kill_tn(c, this);
+				dbg_readinode("Like new node. Throw away old\n");
+				return 0;
+			}
+		}
+		if (this->version < tn->version &&
+		    this->fn->ofs >= tn->fn->ofs &&
+		    this->fn->ofs + this->fn->size <= fn_end) {
+			/* New node entirely overlaps 'this' */
+			if (check_tn_node(c, tn)) {
+				dbg_readinode("new node bad CRC\n");
+				jffs2_kill_tn(c, tn);
+				return 0;
+			}
+			/* ... and is good. Kill 'this'... */
+			rb_replace_node(&this->rb, &tn->rb, &rii->tn_root);
+			tn->overlapped = this->overlapped;
+			jffs2_kill_tn(c, this);
+			/* ... and any subsequent nodes which are also overlapped */
+			this = tn_next(tn);
+			while (this && this->fn->ofs + this->fn->size < fn_end) {
+				struct jffs2_tmp_dnode_info *next = tn_next(this);
+				if (this->version < tn->version) {
+					tn_erase(this, &rii->tn_root);
+					dbg_readinode("Kill overlapped ver %d, 0x%x-0x%x\n",
+						      this->version, this->fn->ofs,
+						      this->fn->ofs+this->fn->size);
+					jffs2_kill_tn(c, this);
+				}
+				this = next;
+			}
+			dbg_readinode("Done inserting new\n");
+			return 0;
+		}
+		if (this->version > tn->version &&
+		    this->fn->ofs <= tn->fn->ofs &&
+		    this->fn->ofs+this->fn->size >= fn_end) {
+			/* New node entirely overlapped by 'this' */
+			if (!check_tn_node(c, this)) {
+				dbg_readinode("Good CRC on old node. Kill new\n");
+				jffs2_kill_tn(c, tn);
+				return 0;
+			}
+			/* ... but 'this' was bad. Replace it... */
+			rb_replace_node(&this->rb, &tn->rb, &rii->tn_root);
+			dbg_readinode("Bad CRC on old overlapping node. Kill it\n");
+			jffs2_kill_tn(c, this);
+			return 0;
+		}
+		/* We want to be inserted under the last node which is
+		   either at a lower offset _or_ has a smaller range */
+		if (this->fn->ofs < tn->fn->ofs ||
+		    (this->fn->ofs == tn->fn->ofs &&
+		     this->fn->size <= tn->fn->size))
+			insert_point = this;
+
+		this = tn_next(this);
+	}
+	dbg_readinode("insert_point %p, ver %d, 0x%x-0x%x, ov %d\n",
+		      insert_point, insert_point->version, insert_point->fn->ofs,
+		      insert_point->fn->ofs+insert_point->fn->size,
+		      insert_point->overlapped);
+	/* We neither completely obsoleted nor were completely
+	   obsoleted by an earlier node. Insert under insert_point */
+	{
+		struct rb_node *parent = &insert_point->rb;
+		struct rb_node **link = &parent;
+
+		while (*link) {
+			parent = *link;
+			insert_point = rb_entry(parent, struct jffs2_tmp_dnode_info, rb);
+			if (tn->fn->ofs > insert_point->fn->ofs)
+				link = &insert_point->rb.rb_right;
+			else if (tn->fn->ofs < insert_point->fn->ofs ||
+				 tn->fn->size < insert_point->fn->size)
+				link = &insert_point->rb.rb_left;
+			else
+				link = &insert_point->rb.rb_right;
+		}
+		rb_link_node(&tn->rb, &insert_point->rb, link);
+		rb_insert_color(&tn->rb, &rii->tn_root);
+	}
+	/* If there's anything behind that overlaps us, note it */
+	this = tn_prev(tn);
+	if (this) {
+		while (1) {
+			if (this->fn->ofs + this->fn->size > tn->fn->ofs) {
+				dbg_readinode("Node is overlapped by %p (v %d, 0x%x-0x%x)\n",
+					      this, this->version, this->fn->ofs,
+					      this->fn->ofs+this->fn->size);
+				tn->overlapped = 1;
+				break;
+			}
+			if (!this->overlapped)
+				break;
+			this = tn_prev(this);
+		}
+	}
+
+	/* If the new node overlaps anything ahead, note it */
+	this = tn_next(tn);
+	while (this && this->fn->ofs < fn_end) {
+		this->overlapped = 1;
+		dbg_readinode("Node ver %d, 0x%x-0x%x is overlapped\n",
+			      this->version, this->fn->ofs,
+			      this->fn->ofs+this->fn->size);
+		this = tn_next(this);
+	}
+	return 0;
+}
+
+/* Trivial function to remove the last node in the tree. Which by definition
+   has no right-hand -- so can be removed just by making its only child (if
+   any) take its place under its parent. */
+static void eat_last(struct rb_root *root, struct rb_node *node)
+{
+	struct rb_node *parent = rb_parent(node);
+	struct rb_node **link;
+
+	/* LAST! */
+	BUG_ON(node->rb_right);
+
+	if (!parent)
+		link = &root->rb_node;
+	else if (node == parent->rb_left)
+		link = &parent->rb_left;
+	else
+		link = &parent->rb_right;
+
+	*link = node->rb_left;
+	/* Colour doesn't matter now. Only the parent pointer. */
+	if (node->rb_left)
+		node->rb_left->rb_parent_color = node->rb_parent_color;
+}
+
+/* We put this in reverse order, so we can just use eat_last */
+static void ver_insert(struct rb_root *ver_root, struct jffs2_tmp_dnode_info *tn)
+{
+	struct rb_node **link = &ver_root->rb_node;
+	struct rb_node *parent = NULL;
+	struct jffs2_tmp_dnode_info *this_tn;
+
+	while (*link) {
+		parent = *link;
+		this_tn = rb_entry(parent, struct jffs2_tmp_dnode_info, rb);
+
+		if (tn->version > this_tn->version)
+			link = &parent->rb_left;
+		else
+			link = &parent->rb_right;
+	}
+	dbg_readinode("Link new node at %p (root is %p)\n", link, ver_root);
+	rb_link_node(&tn->rb, parent, link);
+	rb_insert_color(&tn->rb, ver_root);
+}
+
+/* Build final, normal fragtree from tn tree. It doesn't matter which order
+   we add nodes to the real fragtree, as long as they don't overlap. And
+   having thrown away the majority of overlapped nodes as we went, there
+   really shouldn't be many sets of nodes which do overlap. If we start at
+   the end, we can use the overlap markers -- we can just eat nodes which
+   aren't overlapped, and when we encounter nodes which _do_ overlap we
+   sort them all into a temporary tree in version order before replaying them. */
+static int jffs2_build_inode_fragtree(struct jffs2_sb_info *c,
+				      struct jffs2_inode_info *f,
+				      struct jffs2_readinode_info *rii)
+{
+	struct jffs2_tmp_dnode_info *pen, *last, *this;
+	struct rb_root ver_root = RB_ROOT;
+	uint32_t high_ver = 0;
+
+	if (rii->mdata_tn) {
+		dbg_readinode("potential mdata is ver %d at %p\n", rii->mdata_tn->version, rii->mdata_tn);
+		high_ver = rii->mdata_tn->version;
+		rii->latest_ref = rii->mdata_tn->fn->raw;
+	}
+#ifdef JFFS2_DBG_READINODE_MESSAGES
+	this = tn_last(&rii->tn_root);
+	while (this) {
+		dbg_readinode("tn %p ver %d range 0x%x-0x%x ov %d\n", this, this->version, this->fn->ofs,
+			     this->fn->ofs+this->fn->size, this->overlapped);
+		this = tn_prev(this);
+	}
+#endif
+	pen = tn_last(&rii->tn_root);
+	while ((last = pen)) {
+		pen = tn_prev(last);
+
+		eat_last(&rii->tn_root, &last->rb);
+		ver_insert(&ver_root, last);
+
+		if (unlikely(last->overlapped))
+			continue;
+
+		/* Now we have a bunch of nodes in reverse version
+		   order, in the tree at ver_root. Most of the time,
+		   there'll actually be only one node in the 'tree',
+		   in fact. */
+		this = tn_last(&ver_root);
+
+		while (this) {
+			struct jffs2_tmp_dnode_info *vers_next;
+			int ret;
+			vers_next = tn_prev(this);
+			eat_last(&ver_root, &this->rb);
+			if (check_tn_node(c, this)) {
+				dbg_readinode("node ver %x, 0x%x-0x%x failed CRC\n",
+					     this->version, this->fn->ofs,
+					     this->fn->ofs+this->fn->size);
+				jffs2_kill_tn(c, this);
+			} else {
+				if (this->version > high_ver) {
+					/* Note that this is different from the other
+					   highest_version, because this one is only
+					   counting _valid_ nodes which could give the
+					   latest inode metadata */
+					high_ver = this->version;
+					rii->latest_ref = this->fn->raw;
+				}
+				dbg_readinode("Add %p (v %x, 0x%x-0x%x, ov %d) to fragtree\n",
+					     this, this->version, this->fn->ofs,
+					     this->fn->ofs+this->fn->size, this->overlapped);
+
+				ret = jffs2_add_full_dnode_to_inode(c, f, this->fn);
+				if (ret) {
+					/* Free the nodes in vers_root; let the caller
+					   deal with the rest */
+					JFFS2_ERROR("Add node to tree failed %d\n", ret);
+					while (1) {
+						vers_next = tn_prev(this);
+						if (check_tn_node(c, this))
+							jffs2_mark_node_obsolete(c, this->fn->raw);
+						jffs2_free_full_dnode(this->fn);
+						jffs2_free_tmp_dnode_info(this);
+						this = vers_next;
+						if (!this)
+							break;
+						eat_last(&ver_root, &vers_next->rb);
+					}
+					return ret;
+				}
+				jffs2_free_tmp_dnode_info(this);
+			}
+			this = vers_next;
+		}
+	}
+	return 0;
 }
 
 static void jffs2_free_tmp_dnode_info_list(struct rb_root *list)
@@ -112,8 +590,8 @@ static struct jffs2_raw_node_ref *jffs2_first_valid_node(struct jffs2_raw_node_r
  * 	    negative error code on failure.
  */
 static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
-				struct jffs2_raw_dirent *rd, size_t read, struct jffs2_full_dirent **fdp,
-				uint32_t *latest_mctime, uint32_t *mctime_ver)
+				struct jffs2_raw_dirent *rd, size_t read,
+				struct jffs2_readinode_info *rii)
 {
 	struct jffs2_full_dirent *fd;
 	uint32_t crc;
@@ -125,7 +603,8 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 	if (unlikely(crc != je32_to_cpu(rd->node_crc))) {
 		JFFS2_NOTICE("header CRC failed on dirent node at %#08x: read %#08x, calculated %#08x\n",
 			     ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
-		return 1;
+		jffs2_mark_node_obsolete(c, ref);
+		return 0;
 	}
 
 	/* If we've never checked the CRCs on this node, check them now */
@@ -137,7 +616,8 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 		if (unlikely(PAD((rd->nsize + sizeof(*rd))) != PAD(je32_to_cpu(rd->totlen)))) {
 			JFFS2_ERROR("illegal nsize in node at %#08x: nsize %#02x, totlen %#04x\n",
 				    ref_offset(ref), rd->nsize, je32_to_cpu(rd->totlen));
-			return 1;
+			jffs2_mark_node_obsolete(c, ref);
+			return 0;
 		}
 
 		jeb = &c->blocks[ref->flash_offset / c->sector_size];
@@ -161,10 +641,13 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 	fd->ino = je32_to_cpu(rd->ino);
 	fd->type = rd->type;
 
+	if (fd->version > rii->highest_version)
+		rii->highest_version = fd->version;
+
 	/* Pick out the mctime of the latest dirent */
-	if(fd->version > *mctime_ver && je32_to_cpu(rd->mctime)) {
-		*mctime_ver = fd->version;
-		*latest_mctime = je32_to_cpu(rd->mctime);
+	if(fd->version > rii->mctime_ver && je32_to_cpu(rd->mctime)) {
+		rii->mctime_ver = fd->version;
+		rii->latest_mctime = je32_to_cpu(rd->mctime);
 	}
 
 	/*
@@ -201,7 +684,7 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
 	 * Wheee. We now have a complete jffs2_full_dirent structure, with
 	 * the name in it and everything. Link it into the list
 	 */
-	jffs2_add_fd_to_list(c, fd, fdp);
+	jffs2_add_fd_to_list(c, fd, &rii->fds);
 
 	return 0;
 }
@@ -210,13 +693,13 @@ static inline int read_direntry(struct jffs2_sb_info *c, struct jffs2_raw_node_r
  * Helper function for jffs2_get_inode_nodes().
  * It is called every time an inode node is found.
  *
- * Returns: 0 on succes;
+ * Returns: 0 on success;
  * 	    1 if the node should be marked obsolete;
  * 	    negative error code on failure.
  */
 static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
-			     struct jffs2_raw_inode *rd, struct rb_root *tnp, int rdlen,
-			     uint32_t *latest_mctime, uint32_t *mctime_ver)
+			     struct jffs2_raw_inode *rd, int rdlen,
+			     struct jffs2_readinode_info *rii)
 {
 	struct jffs2_tmp_dnode_info *tn;
 	uint32_t len, csize;
@@ -230,7 +713,8 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 	if (unlikely(crc != je32_to_cpu(rd->node_crc))) {
 		JFFS2_NOTICE("node CRC failed on dnode at %#08x: read %#08x, calculated %#08x\n",
 			     ref_offset(ref), je32_to_cpu(rd->node_crc), crc);
-		return 1;
+		jffs2_mark_node_obsolete(c, ref);
+		return 0;
 	}
 
 	tn = jffs2_alloc_tmp_dnode_info();
@@ -342,6 +826,10 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 	tn->data_crc = je32_to_cpu(rd->data_crc);
 	tn->csize = csize;
 	tn->fn->raw = ref;
+	tn->overlapped = 0;
+
+	if (tn->version > rii->highest_version)
+		rii->highest_version = tn->version;
 
 	/* There was a bug where we wrote hole nodes out with
 	   csize/dsize swapped. Deal with it */
@@ -353,13 +841,25 @@ static inline int read_dnode(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
 	dbg_readinode("dnode @%08x: ver %u, offset %#04x, dsize %#04x, csize %#04x\n",
 		  ref_offset(ref), je32_to_cpu(rd->version), je32_to_cpu(rd->offset), je32_to_cpu(rd->dsize), csize);
 
-	jffs2_add_tn_to_tree(tn, tnp);
+	ret = jffs2_add_tn_to_tree(c, rii, tn);
 
+	if (ret) {
+		jffs2_free_full_dnode(tn->fn);
+	free_out:
+		jffs2_free_tmp_dnode_info(tn);
+		return ret;
+	}
+#ifdef JFFS2_DBG_READINODE_MESSAGES
+	dbg_readinode("After adding ver %d:\n", tn->version);
+	tn = tn_first(&rii->tn_root);
+	while (tn) {
+		dbg_readinode("%p: v %d r 0x%x-0x%x ov %d\n",
+			     tn, tn->version, tn->fn->ofs,
+			     tn->fn->ofs+tn->fn->size, tn->overlapped);
+		tn = tn_next(tn);
+	}
+#endif
 	return 0;
-
-free_out:
-	jffs2_free_tmp_dnode_info(tn);
-	return ret;
 }
 
 /*
@@ -379,7 +879,8 @@ static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_re
 		JFFS2_ERROR("Node is {%04x,%04x,%08x,%08x}. Please report this error.\n",
                             je16_to_cpu(un->magic), je16_to_cpu(un->nodetype),
                             je32_to_cpu(un->totlen), je32_to_cpu(un->hdr_crc));
-		return 1;
+		jffs2_mark_node_obsolete(c, ref);
+		return 0;
 	}
 
 	un->nodetype = cpu_to_je16(JFFS2_NODE_ACCURATE | je16_to_cpu(un->nodetype));
@@ -407,7 +908,8 @@ static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_re
 	case JFFS2_FEATURE_RWCOMPAT_DELETE:
 		JFFS2_NOTICE("unknown RWCOMPAT_DELETE nodetype %#04X at %#08x\n",
 			     je16_to_cpu(un->nodetype), ref_offset(ref));
-		return 1;
+		jffs2_mark_node_obsolete(c, ref);
+		return 0;
 	}
 
 	return 0;
@@ -421,92 +923,62 @@ static inline int read_unknown(struct jffs2_sb_info *c, struct jffs2_raw_node_re
  * 	    negative error code on failure.
  */
 static int read_more(struct jffs2_sb_info *c, struct jffs2_raw_node_ref *ref,
-		     int right_size, int *rdlen, unsigned char *buf, unsigned char *bufstart)
+		     int needed_len, int *rdlen, unsigned char *buf)
 {
-	int right_len, err, len;
+	int err, to_read = needed_len - *rdlen;
 	size_t retlen;
 	uint32_t offs;
 
 	if (jffs2_is_writebuffered(c)) {
-		right_len = c->wbuf_pagesize - (bufstart - buf);
-		if (right_size + (int)(bufstart - buf) > c->wbuf_pagesize)
-			right_len += c->wbuf_pagesize;
-	} else
-		right_len = right_size;
+		int rem = to_read % c->wbuf_pagesize;
 
-	if (*rdlen == right_len)
-		return 0;
+		if (rem)
+			to_read += c->wbuf_pagesize - rem;
+	}
 
 	/* We need to read more data */
 	offs = ref_offset(ref) + *rdlen;
-	if (jffs2_is_writebuffered(c)) {
-		bufstart = buf + c->wbuf_pagesize;
-		len = c->wbuf_pagesize;
-	} else {
-		bufstart = buf + *rdlen;
-		len = right_size - *rdlen;
-	}
 
-	dbg_readinode("read more %d bytes\n", len);
+	dbg_readinode("read more %d bytes\n", to_read);
 
-	err = jffs2_flash_read(c, offs, len, &retlen, bufstart);
+	err = jffs2_flash_read(c, offs, to_read, &retlen, buf + *rdlen);
 	if (err) {
 		JFFS2_ERROR("can not read %d bytes from 0x%08x, "
-			"error code: %d.\n", len, offs, err);
+			"error code: %d.\n", to_read, offs, err);
 		return err;
 	}
 
-	if (retlen < len) {
+	if (retlen < to_read) {
 		JFFS2_ERROR("short read at %#08x: %zu instead of %d.\n",
-				offs, retlen, len);
+				offs, retlen, to_read);
 		return -EIO;
 	}
 
-	*rdlen = right_len;
-
+	*rdlen += to_read;
 	return 0;
 }
 
 /* Get tmp_dnode_info and full_dirent for all non-obsolete nodes associated
-   with this ino, returning the former in order of version */
+   with this ino. Perform a preliminary ordering on data nodes, throwing away
+   those which are completely obsoleted by newer ones. The naïve approach we
+   use to take of just returning them _all_ in version order will cause us to
+   run out of memory in certain degenerate cases. */
 static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
-				 struct rb_root *tnp, struct jffs2_full_dirent **fdp,
-				 uint32_t *highest_version, uint32_t *latest_mctime,
-				 uint32_t *mctime_ver)
+				 struct jffs2_readinode_info *rii)
 {
 	struct jffs2_raw_node_ref *ref, *valid_ref;
-	struct rb_root ret_tn = RB_ROOT;
-	struct jffs2_full_dirent *ret_fd = NULL;
 	unsigned char *buf = NULL;
 	union jffs2_node_union *node;
 	size_t retlen;
 	int len, err;
 
-	*mctime_ver = 0;
+	rii->mctime_ver = 0;
 
 	dbg_readinode("ino #%u\n", f->inocache->ino);
 
-	if (jffs2_is_writebuffered(c)) {
-		/*
-		 * If we have the write buffer, we assume the minimal I/O unit
-		 * is c->wbuf_pagesize. We implement some optimizations which in
-		 * this case and we need a temporary buffer of size =
-		 * 2*c->wbuf_pagesize bytes (see comments in read_dnode()).
-		 * Basically, we want to read not only the node header, but the
-		 * whole wbuf (NAND page in case of NAND) or 2, if the node
-		 * header overlaps the border between the 2 wbufs.
-		 */
-		len = 2*c->wbuf_pagesize;
-	} else {
-		/*
-		 * When there is no write buffer, the size of the temporary
-		 * buffer is the size of the larges node header.
-		 */
-		len = sizeof(union jffs2_node_union);
-	}
-
 	/* FIXME: in case of NOR and available ->point() this
 	 * needs to be fixed. */
+	len = sizeof(union jffs2_node_union) + c->wbuf_pagesize;
 	buf = kmalloc(len, GFP_KERNEL);
 	if (!buf)
 		return -ENOMEM;
@@ -516,8 +988,6 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 	if (!valid_ref && f->inocache->ino != 1)
 		JFFS2_WARNING("Eep. No valid nodes for ino #%u.\n", f->inocache->ino);
 	while (valid_ref) {
-		unsigned char *bufstart;
-
 		/* We can hold a pointer to a non-obsolete node without the spinlock,
 		   but _obsolete_ nodes may disappear at any time, if the block
 		   they're in gets erased. So if we mark 'ref' obsolete while we're
@@ -533,32 +1003,31 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 		/*
 		 * At this point we don't know the type of the node we're going
 		 * to read, so we do not know the size of its header. In order
-		 * to minimize the amount of flash IO we assume the node has
-		 * size = JFFS2_MIN_NODE_HEADER.
+		 * to minimize the amount of flash IO we assume the header is
+		 * of size = JFFS2_MIN_NODE_HEADER.
 		 */
+		len = JFFS2_MIN_NODE_HEADER;
 		if (jffs2_is_writebuffered(c)) {
+			int end, rem;
+
 			/*
-			 * We treat 'buf' as 2 adjacent wbufs. We want to
-			 * adjust bufstart such as it points to the
-			 * beginning of the node within this wbuf.
+			 * We are about to read JFFS2_MIN_NODE_HEADER bytes,
+			 * but this flash has some minimal I/O unit. It is
+			 * possible that we'll need to read more soon, so read
+			 * up to the next min. I/O unit, in order not to
+			 * re-read the same min. I/O unit twice.
 			 */
-			bufstart = buf + (ref_offset(ref) % c->wbuf_pagesize);
-			/* We will read either one wbuf or 2 wbufs. */
-			len = c->wbuf_pagesize - (bufstart - buf);
-			if (JFFS2_MIN_NODE_HEADER + (int)(bufstart - buf) > c->wbuf_pagesize) {
-				/* The header spans the border of the first wbuf */
-				len += c->wbuf_pagesize;
-			}
-		} else {
-			bufstart = buf;
-			len = JFFS2_MIN_NODE_HEADER;
+			end = ref_offset(ref) + len;
+			rem = end % c->wbuf_pagesize;
+			if (rem)
+				end += c->wbuf_pagesize - rem;
+			len = end - ref_offset(ref);
 		}
 
 		dbg_readinode("read %d bytes at %#08x(%d).\n", len, ref_offset(ref), ref_flags(ref));
 
 		/* FIXME: point() */
-		err = jffs2_flash_read(c, ref_offset(ref), len,
-				       &retlen, bufstart);
+		err = jffs2_flash_read(c, ref_offset(ref), len, &retlen, buf);
 		if (err) {
 			JFFS2_ERROR("can not read %d bytes from 0x%08x, " "error code: %d.\n", len, ref_offset(ref), err);
 			goto free_out;
@@ -570,7 +1039,7 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 			goto free_out;
 		}
 
-		node = (union jffs2_node_union *)bufstart;
+		node = (union jffs2_node_union *)buf;
 
 		/* No need to mask in the valid bit; it shouldn't be invalid */
 		if (je32_to_cpu(node->u.hdr_crc) != crc32(0, node, sizeof(node->u)-4)) {
@@ -583,10 +1052,10 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 			jffs2_mark_node_obsolete(c, ref);
 			goto cont;
 		}
-		/* Due to poor choice of crc32 seed, an all-zero node will have a correct CRC */
-		if (!je32_to_cpu(node->u.hdr_crc) && !je16_to_cpu(node->u.nodetype) &&
-		    !je16_to_cpu(node->u.magic) && !je32_to_cpu(node->u.totlen)) {
-			JFFS2_NOTICE("All zero node header at %#08x.\n", ref_offset(ref));
+		if (je16_to_cpu(node->u.magic) != JFFS2_MAGIC_BITMASK) {
+			/* Not a JFFS2 node, whinge and move on */
+			JFFS2_NOTICE("Wrong magic bitmask 0x%04x in node header at %#08x.\n",
+				     je16_to_cpu(node->u.magic), ref_offset(ref));
 			jffs2_mark_node_obsolete(c, ref);
 			goto cont;
 		}
@@ -596,46 +1065,34 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 		case JFFS2_NODETYPE_DIRENT:
 
 			if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_raw_dirent)) {
-				err = read_more(c, ref, sizeof(struct jffs2_raw_dirent), &len, buf, bufstart);
+				err = read_more(c, ref, sizeof(struct jffs2_raw_dirent), &len, buf);
 				if (unlikely(err))
 					goto free_out;
 			}
 
-			err = read_direntry(c, ref, &node->d, retlen, &ret_fd, latest_mctime, mctime_ver);
-			if (err == 1) {
-				jffs2_mark_node_obsolete(c, ref);
-				break;
-			} else if (unlikely(err))
+			err = read_direntry(c, ref, &node->d, retlen, rii);
+			if (unlikely(err))
 				goto free_out;
 
-			if (je32_to_cpu(node->d.version) > *highest_version)
-				*highest_version = je32_to_cpu(node->d.version);
-
 			break;
 
 		case JFFS2_NODETYPE_INODE:
 
 			if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_raw_inode)) {
-				err = read_more(c, ref, sizeof(struct jffs2_raw_inode), &len, buf, bufstart);
+				err = read_more(c, ref, sizeof(struct jffs2_raw_inode), &len, buf);
 				if (unlikely(err))
 					goto free_out;
 			}
 
-			err = read_dnode(c, ref, &node->i, &ret_tn, len, latest_mctime, mctime_ver);
-			if (err == 1) {
-				jffs2_mark_node_obsolete(c, ref);
-				break;
-			} else if (unlikely(err))
+			err = read_dnode(c, ref, &node->i, len, rii);
+			if (unlikely(err))
 				goto free_out;
 
-			if (je32_to_cpu(node->i.version) > *highest_version)
-				*highest_version = je32_to_cpu(node->i.version);
-
 			break;
 
 		default:
 			if (JFFS2_MIN_NODE_HEADER < sizeof(struct jffs2_unknown_node)) {
-				err = read_more(c, ref, sizeof(struct jffs2_unknown_node), &len, buf, bufstart);
+				err = read_more(c, ref, sizeof(struct jffs2_unknown_node), &len, buf);
 				if (unlikely(err))
 					goto free_out;
 			}
@@ -653,17 +1110,19 @@ static int jffs2_get_inode_nodes(struct jffs2_sb_info *c, struct jffs2_inode_inf
 	}
 
 	spin_unlock(&c->erase_completion_lock);
-	*tnp = ret_tn;
-	*fdp = ret_fd;
 	kfree(buf);
 
+	f->highest_version = rii->highest_version;
+
 	dbg_readinode("nodes of inode #%u were read, the highest version is %u, latest_mctime %u, mctime_ver %u.\n",
-			f->inocache->ino, *highest_version, *latest_mctime, *mctime_ver);
+		      f->inocache->ino, rii->highest_version, rii->latest_mctime,
+		      rii->mctime_ver);
 	return 0;
 
  free_out:
-	jffs2_free_tmp_dnode_info_list(&ret_tn);
-	jffs2_free_full_dirent_list(ret_fd);
+	jffs2_free_tmp_dnode_info_list(&rii->tn_root);
+	jffs2_free_full_dirent_list(rii->fds);
+	rii->fds = NULL;
 	kfree(buf);
 	return err;
 }
@@ -672,20 +1131,17 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 					struct jffs2_inode_info *f,
 					struct jffs2_raw_inode *latest_node)
 {
-	struct jffs2_tmp_dnode_info *tn;
-	struct rb_root tn_list;
-	struct rb_node *rb, *repl_rb;
-	struct jffs2_full_dirent *fd_list;
-	struct jffs2_full_dnode *fn, *first_fn = NULL;
-	uint32_t crc;
-	uint32_t latest_mctime, mctime_ver;
+	struct jffs2_readinode_info rii;
+	uint32_t crc, new_size;
 	size_t retlen;
 	int ret;
 
 	dbg_readinode("ino #%u nlink is %d\n", f->inocache->ino, f->inocache->nlink);
 
+	memset(&rii, 0, sizeof(rii));
+
 	/* Grab all nodes relevant to this ino */
-	ret = jffs2_get_inode_nodes(c, f, &tn_list, &fd_list, &f->highest_version, &latest_mctime, &mctime_ver);
+	ret = jffs2_get_inode_nodes(c, f, &rii);
 
 	if (ret) {
 		JFFS2_ERROR("cannot read nodes for ino %u, returned error is %d\n", f->inocache->ino, ret);
@@ -693,74 +1149,42 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 			jffs2_set_inocache_state(c, f->inocache, INO_STATE_CHECKEDABSENT);
 		return ret;
 	}
-	f->dents = fd_list;
-
-	rb = rb_first(&tn_list);
 
-	while (rb) {
-		cond_resched();
-		tn = rb_entry(rb, struct jffs2_tmp_dnode_info, rb);
-		fn = tn->fn;
-		ret = 1;
-		dbg_readinode("consider node ver %u, phys offset "
-			"%#08x(%d), range %u-%u.\n", tn->version,
-			ref_offset(fn->raw), ref_flags(fn->raw),
-			fn->ofs, fn->ofs + fn->size);
-
-		if (fn->size) {
-			ret = jffs2_add_older_frag_to_fragtree(c, f, tn);
-			/* TODO: the error code isn't checked, check it */
-			jffs2_dbg_fragtree_paranoia_check_nolock(f);
-			BUG_ON(ret < 0);
-			if (!first_fn && ret == 0)
-				first_fn = fn;
-		} else if (!first_fn) {
-			first_fn = fn;
-			f->metadata = fn;
-			ret = 0; /* Prevent freeing the metadata update node */
-		} else
-			jffs2_mark_node_obsolete(c, fn->raw);
-
-		BUG_ON(rb->rb_left);
-		if (rb_parent(rb) && rb_parent(rb)->rb_left == rb) {
-			/* We were then left-hand child of our parent. We need
-			 * to move our own right-hand child into our place. */
-			repl_rb = rb->rb_right;
-			if (repl_rb)
-				rb_set_parent(repl_rb, rb_parent(rb));
-		} else
-			repl_rb = NULL;
-
-		rb = rb_next(rb);
-
-		/* Remove the spent tn from the tree; don't bother rebalancing
-		 * but put our right-hand child in our own place. */
-		if (rb_parent(&tn->rb)) {
-			if (rb_parent(&tn->rb)->rb_left == &tn->rb)
-				rb_parent(&tn->rb)->rb_left = repl_rb;
-			else if (rb_parent(&tn->rb)->rb_right == &tn->rb)
-				rb_parent(&tn->rb)->rb_right = repl_rb;
-			else BUG();
-		} else if (tn->rb.rb_right)
-			rb_set_parent(tn->rb.rb_right, NULL);
+	ret = jffs2_build_inode_fragtree(c, f, &rii);
+	if (ret) {
+		JFFS2_ERROR("Failed to build final fragtree for inode #%u: error %d\n",
+			    f->inocache->ino, ret);
+		if (f->inocache->state == INO_STATE_READING)
+			jffs2_set_inocache_state(c, f->inocache, INO_STATE_CHECKEDABSENT);
+		jffs2_free_tmp_dnode_info_list(&rii.tn_root);
+		/* FIXME: We could at least crc-check them all */
+		if (rii.mdata_tn) {
+			jffs2_free_full_dnode(rii.mdata_tn->fn);
+			jffs2_free_tmp_dnode_info(rii.mdata_tn);
+			rii.mdata_tn = NULL;
+		}
+		return ret;
+	}
 
-		jffs2_free_tmp_dnode_info(tn);
-		if (ret) {
-			dbg_readinode("delete dnode %u-%u.\n",
-				fn->ofs, fn->ofs + fn->size);
-			jffs2_free_full_dnode(fn);
+	if (rii.mdata_tn) {
+		if (rii.mdata_tn->fn->raw == rii.latest_ref) {
+			f->metadata = rii.mdata_tn->fn;
+			jffs2_free_tmp_dnode_info(rii.mdata_tn);
+		} else {
+			jffs2_kill_tn(c, rii.mdata_tn);
 		}
+		rii.mdata_tn = NULL;
 	}
-	jffs2_dbg_fragtree_paranoia_check_nolock(f);
 
-	BUG_ON(first_fn && ref_obsolete(first_fn->raw));
+	f->dents = rii.fds;
 
-	fn = first_fn;
-	if (unlikely(!first_fn)) {
+	jffs2_dbg_fragtree_paranoia_check_nolock(f);
+
+	if (unlikely(!rii.latest_ref)) {
 		/* No data nodes for this inode. */
 		if (f->inocache->ino != 1) {
 			JFFS2_WARNING("no data nodes found for ino #%u\n", f->inocache->ino);
-			if (!fd_list) {
+			if (!rii.fds) {
 				if (f->inocache->state == INO_STATE_READING)
 					jffs2_set_inocache_state(c, f->inocache, INO_STATE_CHECKEDABSENT);
 				return -EIO;
@@ -778,7 +1202,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 		return 0;
 	}
 
-	ret = jffs2_flash_read(c, ref_offset(fn->raw), sizeof(*latest_node), &retlen, (void *)latest_node);
+	ret = jffs2_flash_read(c, ref_offset(rii.latest_ref), sizeof(*latest_node), &retlen, (void *)latest_node);
 	if (ret || retlen != sizeof(*latest_node)) {
 		JFFS2_ERROR("failed to read from flash: error %d, %zd of %zd bytes read\n",
 			ret, retlen, sizeof(*latest_node));
@@ -791,7 +1215,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 	crc = crc32(0, latest_node, sizeof(*latest_node)-8);
 	if (crc != je32_to_cpu(latest_node->node_crc)) {
 		JFFS2_ERROR("CRC failed for read_inode of inode %u at physical location 0x%x\n",
-			f->inocache->ino, ref_offset(fn->raw));
+			f->inocache->ino, ref_offset(rii.latest_ref));
 		up(&f->sem);
 		jffs2_do_clear_inode(c, f);
 		return -EIO;
@@ -799,17 +1223,22 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 
 	switch(jemode_to_cpu(latest_node->mode) & S_IFMT) {
 	case S_IFDIR:
-		if (mctime_ver > je32_to_cpu(latest_node->version)) {
+		if (rii.mctime_ver > je32_to_cpu(latest_node->version)) {
 			/* The times in the latest_node are actually older than
 			   mctime in the latest dirent. Cheat. */
-			latest_node->ctime = latest_node->mtime = cpu_to_je32(latest_mctime);
+			latest_node->ctime = latest_node->mtime = cpu_to_je32(rii.latest_mctime);
 		}
 		break;
 
 
 	case S_IFREG:
 		/* If it was a regular file, truncate it to the latest node's isize */
-		jffs2_truncate_fragtree(c, &f->fragtree, je32_to_cpu(latest_node->isize));
+		new_size = jffs2_truncate_fragtree(c, &f->fragtree, je32_to_cpu(latest_node->isize));
+		if (new_size != je32_to_cpu(latest_node->isize)) {
+			JFFS2_WARNING("Truncating ino #%u to %d bytes failed because it only had %d bytes to start with!\n",
+				      f->inocache->ino, je32_to_cpu(latest_node->isize), new_size);
+			latest_node->isize = cpu_to_je32(new_size);
+		}
 		break;
 
 	case S_IFLNK:
@@ -832,7 +1261,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
 				return -ENOMEM;
 			}
 
-			ret = jffs2_flash_read(c, ref_offset(fn->raw) + sizeof(*latest_node),
+			ret = jffs2_flash_read(c, ref_offset(rii.latest_ref) + sizeof(*latest_node),
 						je32_to_cpu(latest_node->csize), &retlen, (char *)f->target);
 
 			if (ret  || retlen != je32_to_cpu(latest_node->csize)) {
diff --git a/fs/jffs2/scan.c b/fs/jffs2/scan.c
index 7fb45bd4..2a1c976 100644
--- a/fs/jffs2/scan.c
+++ b/fs/jffs2/scan.c
@@ -1,15 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: scan.c,v 1.125 2005/09/30 13:59:13 dedekind Exp $
- *
  */
+
 #include <linux/kernel.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
@@ -636,16 +635,17 @@ scan_more:
 
 		if (*(uint32_t *)(&buf[ofs-buf_ofs]) == 0xffffffff) {
 			uint32_t inbuf_ofs;
-			uint32_t empty_start;
+			uint32_t empty_start, scan_end;
 
 			empty_start = ofs;
 			ofs += 4;
+			scan_end = min_t(uint32_t, EMPTY_SCAN_SIZE(c->sector_size)/8, buf_len);
 
 			D1(printk(KERN_DEBUG "Found empty flash at 0x%08x\n", ofs));
 		more_empty:
 			inbuf_ofs = ofs - buf_ofs;
-			while (inbuf_ofs < buf_len) {
-				if (*(uint32_t *)(&buf[inbuf_ofs]) != 0xffffffff) {
+			while (inbuf_ofs < scan_end) {
+				if (unlikely(*(uint32_t *)(&buf[inbuf_ofs]) != 0xffffffff)) {
 					printk(KERN_WARNING "Empty flash at 0x%08x ends at 0x%08x\n",
 					       empty_start, ofs);
 					if ((err = jffs2_scan_dirty_space(c, jeb, ofs-empty_start)))
@@ -666,7 +666,11 @@ scan_more:
 				D1(printk(KERN_DEBUG "%d bytes at start of block seems clean... assuming all clean\n", EMPTY_SCAN_SIZE(c->sector_size)));
 				return BLK_STATE_CLEANMARKER;
 			}
-
+			if (!buf_size && (scan_end != buf_len)) {/* XIP/point case */
+				scan_end = buf_len;
+				goto more_empty;
+			}
+			
 			/* See how much more there is to read in this eraseblock... */
 			buf_len = min_t(uint32_t, buf_size, jeb->offset + c->sector_size - ofs);
 			if (!buf_len) {
@@ -676,6 +680,8 @@ scan_more:
 					  empty_start));
 				break;
 			}
+			/* point never reaches here */
+			scan_end = buf_len;
 			D1(printk(KERN_DEBUG "Reading another 0x%x at 0x%08x\n", buf_len, ofs));
 			err = jffs2_fill_scan_buf(c, buf, ofs, buf_len);
 			if (err)
@@ -734,18 +740,8 @@ scan_more:
 			ofs += 4;
 			continue;
 		}
-		/* Due to poor choice of crc32 seed, an all-zero node will have a correct CRC */
-		if (!je32_to_cpu(node->hdr_crc) && !je16_to_cpu(node->nodetype) &&
-		    !je16_to_cpu(node->magic) && !je32_to_cpu(node->totlen)) {
-			noisy_printk(&noise, "jffs2_scan_eraseblock(): All zero node header at 0x%08x.\n", ofs);
-			if ((err = jffs2_scan_dirty_space(c, jeb, 4)))
-				return err;
-			ofs += 4;
-			continue;
-		}
 
-		if (ofs + je32_to_cpu(node->totlen) >
-		    jeb->offset + c->sector_size) {
+		if (ofs + je32_to_cpu(node->totlen) > jeb->offset + c->sector_size) {
 			/* Eep. Node goes over the end of the erase block. */
 			printk(KERN_WARNING "Node at 0x%08x with length 0x%08x would run over the end of the erase block\n",
 			       ofs, je32_to_cpu(node->totlen));
@@ -952,8 +948,7 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 				 struct jffs2_raw_inode *ri, uint32_t ofs, struct jffs2_summary *s)
 {
 	struct jffs2_inode_cache *ic;
-	uint32_t ino = je32_to_cpu(ri->ino);
-	int err;
+	uint32_t crc, ino = je32_to_cpu(ri->ino);
 
 	D1(printk(KERN_DEBUG "jffs2_scan_inode_node(): Node at 0x%08x\n", ofs));
 
@@ -966,21 +961,22 @@ static int jffs2_scan_inode_node(struct jffs2_sb_info *c, struct jffs2_erasebloc
 	   Which means that the _full_ amount of time to get to proper write mode with GC
 	   operational may actually be _longer_ than before. Sucks to be me. */
 
+	/* Check the node CRC in any case. */
+	crc = crc32(0, ri, sizeof(*ri)-8);
+	if (crc != je32_to_cpu(ri->node_crc)) {
+		printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on "
+		       "node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
+		       ofs, je32_to_cpu(ri->node_crc), crc);
+		/*
+		 * We believe totlen because the CRC on the node
+		 * _header_ was OK, just the node itself failed.
+		 */
+		return jffs2_scan_dirty_space(c, jeb,
+					      PAD(je32_to_cpu(ri->totlen)));
+	}
+
 	ic = jffs2_get_ino_cache(c, ino);
 	if (!ic) {
-		/* Inocache get failed. Either we read a bogus ino# or it's just genuinely the
-		   first node we found for this inode. Do a CRC check to protect against the former
-		   case */
-		uint32_t crc = crc32(0, ri, sizeof(*ri)-8);
-
-		if (crc != je32_to_cpu(ri->node_crc)) {
-			printk(KERN_NOTICE "jffs2_scan_inode_node(): CRC failed on node at 0x%08x: Read 0x%08x, calculated 0x%08x\n",
-			       ofs, je32_to_cpu(ri->node_crc), crc);
-			/* We believe totlen because the CRC on the node _header_ was OK, just the node itself failed. */
-			if ((err = jffs2_scan_dirty_space(c, jeb, PAD(je32_to_cpu(ri->totlen)))))
-				return err;
-			return 0;
-		}
 		ic = jffs2_scan_make_ino_cache(c, ino);
 		if (!ic)
 			return -ENOMEM;
diff --git a/fs/jffs2/security.c b/fs/jffs2/security.c
index 52a9894..bc9f6ba 100644
--- a/fs/jffs2/security.c
+++ b/fs/jffs2/security.c
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
diff --git a/fs/jffs2/summary.c b/fs/jffs2/summary.c
index 30f8884..d828b29 100644
--- a/fs/jffs2/summary.c
+++ b/fs/jffs2/summary.c
@@ -1,16 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2004  Ferenc Havasi <havasi@inf.u-szeged.hu>,
- *                     Zoltan Sogor <weth@inf.u-szeged.hu>,
- *                     Patrik Kluba <pajko@halom.u-szeged.hu>,
- *                     University of Szeged, Hungary
- *               2006  KaiGai Kohei <kaigai@ak.jp.nec.com>
+ * Copyright © 2004  Ferenc Havasi <havasi@inf.u-szeged.hu>,
+ *                   Zoltan Sogor <weth@inf.u-szeged.hu>,
+ *                   Patrik Kluba <pajko@halom.u-szeged.hu>,
+ *                   University of Szeged, Hungary
+ *             2006  KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: summary.c,v 1.4 2005/09/26 11:37:21 havasi Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/summary.h b/fs/jffs2/summary.h
index 6bf1f6a..0c6669e 100644
--- a/fs/jffs2/summary.h
+++ b/fs/jffs2/summary.h
@@ -1,15 +1,13 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2004  Ferenc Havasi <havasi@inf.u-szeged.hu>,
- *                     Zoltan Sogor <weth@inf.u-szeged.hu>,
- *                     Patrik Kluba <pajko@halom.u-szeged.hu>,
- *                     University of Szeged, Hungary
+ * Copyright © 2004  Ferenc Havasi <havasi@inf.u-szeged.hu>,
+ *                   Zoltan Sogor <weth@inf.u-szeged.hu>,
+ *                   Patrik Kluba <pajko@halom.u-szeged.hu>,
+ *                   University of Szeged, Hungary
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: summary.h,v 1.2 2005/09/26 11:37:21 havasi Exp $
- *
  */
 
 #ifndef JFFS2_SUMMARY_H
diff --git a/fs/jffs2/super.c b/fs/jffs2/super.c
index cc7e8e7..e51164a 100644
--- a/fs/jffs2/super.c
+++ b/fs/jffs2/super.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: super.c,v 1.110 2005/11/07 11:14:42 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -347,7 +345,7 @@ static int __init init_jffs2_fs(void)
 #ifdef CONFIG_JFFS2_SUMMARY
 	       " (SUMMARY) "
 #endif
-	       " (C) 2001-2006 Red Hat, Inc.\n");
+	       " © 2001-2006 Red Hat, Inc.\n");
 
 	jffs2_inode_cachep = kmem_cache_create("jffs2_i",
 					     sizeof(struct jffs2_inode_info),
diff --git a/fs/jffs2/symlink.c b/fs/jffs2/symlink.c
index 7e4882c..b7339c3 100644
--- a/fs/jffs2/symlink.c
+++ b/fs/jffs2/symlink.c
@@ -1,17 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001, 2002 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: symlink.c,v 1.19 2005/11/07 11:14:42 gleixner Exp $
- *
  */
 
-
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
diff --git a/fs/jffs2/wbuf.c b/fs/jffs2/wbuf.c
index ab86031..c556e85 100644
--- a/fs/jffs2/wbuf.c
+++ b/fs/jffs2/wbuf.c
@@ -1,16 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
- * Copyright (C) 2004 Thomas Gleixner <tglx@linutronix.de>
+ * Copyright © 2001-2007 Red Hat, Inc.
+ * Copyright © 2004 Thomas Gleixner <tglx@linutronix.de>
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  * Modified debugged and enhanced by Thomas Gleixner <tglx@linutronix.de>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: wbuf.c,v 1.100 2005/09/30 13:59:13 dedekind Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -345,6 +343,9 @@ static void jffs2_wbuf_recover(struct jffs2_sb_info *c)
 		return;
 	}
 
+	/* The summary is not recovered, so it must be disabled for this erase block */
+	jffs2_sum_disable_collecting(c->summary);
+
 	ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, nr_refile);
 	if (ret) {
 		printk(KERN_WARNING "Failed to allocate node refs for wbuf recovery. Data loss ensues.\n");
@@ -967,9 +968,9 @@ exit:
 
 static const struct jffs2_unknown_node oob_cleanmarker =
 {
-	.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK),
-	.nodetype = cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
-	.totlen = cpu_to_je32(8)
+	.magic = constant_cpu_to_je16(JFFS2_MAGIC_BITMASK),
+	.nodetype = constant_cpu_to_je16(JFFS2_NODETYPE_CLEANMARKER),
+	.totlen = constant_cpu_to_je32(8)
 };
 
 /*
diff --git a/fs/jffs2/write.c b/fs/jffs2/write.c
index 6717679..c9fe0ab 100644
--- a/fs/jffs2/write.c
+++ b/fs/jffs2/write.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001-2003 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: write.c,v 1.97 2005/11/07 11:14:42 gleixner Exp $
- *
  */
 
 #include <linux/kernel.h>
@@ -507,8 +505,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 	uint32_t alloclen;
 	int ret;
 
-	if (1 /* alternative branch needs testing */ ||
-	    !jffs2_can_mark_obsolete(c)) {
+	if (!jffs2_can_mark_obsolete(c)) {
 		/* We can't mark stuff obsolete on the medium. We need to write a deletion dirent */
 
 		rd = jffs2_alloc_raw_dirent();
diff --git a/fs/jffs2/writev.c b/fs/jffs2/writev.c
index c638ae1..b9276b1 100644
--- a/fs/jffs2/writev.c
+++ b/fs/jffs2/writev.c
@@ -1,14 +1,12 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2001, 2002 Red Hat, Inc.
+ * Copyright © 2001-2007 Red Hat, Inc.
  *
  * Created by David Woodhouse <dwmw2@infradead.org>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
- * $Id: writev.c,v 1.8 2005/09/09 15:11:58 havasi Exp $
- *
  */
 
 #include <linux/kernel.h>
diff --git a/fs/jffs2/xattr.c b/fs/jffs2/xattr.c
index 4bb3f18..78fc088 100644
--- a/fs/jffs2/xattr.c
+++ b/fs/jffs2/xattr.c
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/fs.h>
diff --git a/fs/jffs2/xattr.h b/fs/jffs2/xattr.h
index 06a5c69..3b0ff29 100644
--- a/fs/jffs2/xattr.h
+++ b/fs/jffs2/xattr.h
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 #ifndef _JFFS2_FS_XATTR_H_
 #define _JFFS2_FS_XATTR_H_
 
diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c
index ed046e1..8ec5765 100644
--- a/fs/jffs2/xattr_trusted.c
+++ b/fs/jffs2/xattr_trusted.c
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/jffs2.h>
diff --git a/fs/jffs2/xattr_user.c b/fs/jffs2/xattr_user.c
index 2f8e9aa..40942bc 100644
--- a/fs/jffs2/xattr_user.c
+++ b/fs/jffs2/xattr_user.c
@@ -1,13 +1,14 @@
 /*
  * JFFS2 -- Journalling Flash File System, Version 2.
  *
- * Copyright (C) 2006  NEC Corporation
+ * Copyright © 2006  NEC Corporation
  *
  * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
  *
  * For licensing information, see the file 'LICENCE' in this directory.
  *
  */
+
 #include <linux/kernel.h>
 #include <linux/fs.h>
 #include <linux/jffs2.h>