--- /dev/null
+--- a/fs/yaffs2/yaffs_tagscompat.h
++++ b/fs/yaffs2/yaffs_tagscompat.h
+@@ -30,8 +30,9 @@ int yaffs_TagsCompatabilityReadChunkWith
+ int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
+ int blockNo);
+ int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+- int blockNo, yaffs_BlockState *
+- state, int *sequenceNumber);
++ int blockNo,
++ yaffs_BlockState *state,
++ __u32 *sequenceNumber);
+
+ void yaffs_CalcTagsECC(yaffs_Tags * tags);
+ int yaffs_CheckECCOnTags(yaffs_Tags * tags);
+--- a/fs/yaffs2/Kconfig
++++ b/fs/yaffs2/Kconfig
+@@ -43,7 +43,8 @@ config YAFFS_9BYTE_TAGS
+ format that you need to continue to support. New data written
+ also uses the older-style format. Note: Use of this option
+ generally requires that MTD's oob layout be adjusted to use the
+- older-style format. See notes on tags formats and MTD versions.
++ older-style format. See notes on tags formats and MTD versions
++ in yaffs_mtdif1.c.
+
+ If unsure, say N.
+
+@@ -109,26 +110,6 @@ config YAFFS_DISABLE_LAZY_LOAD
+
+ If unsure, say N.
+
+-config YAFFS_CHECKPOINT_RESERVED_BLOCKS
+- int "Reserved blocks for checkpointing"
+- depends on YAFFS_YAFFS2
+- default 10
+- help
+- Give the number of Blocks to reserve for checkpointing.
+- Checkpointing saves the state at unmount so that mounting is
+- much faster as a scan of all the flash to regenerate this state
+- is not needed. These Blocks are reserved per partition, so if
+- you have very small partitions the default (10) may be a mess
+- for you. You can set this value to 0, but that does not mean
+- checkpointing is disabled at all. There only won't be any
+- specially reserved blocks for checkpointing, so if there is
+- enough free space on the filesystem, it will be used for
+- checkpointing.
+-
+- If unsure, leave at default (10), but don't wonder if there are
+- always 2MB used on your large page device partition (10 x 2k
+- pagesize). When using small partitions or when being very small
+- on space, you probably want to set this to zero.
+
+ config YAFFS_DISABLE_WIDE_TNODES
+ bool "Turn off wide tnodes"
+--- a/fs/yaffs2/yaffs_mtdif.h
++++ b/fs/yaffs2/yaffs_mtdif.h
+@@ -18,6 +18,11 @@
+
+ #include "yaffs_guts.h"
+
++#if (MTD_VERSION_CODE < MTD_VERSION(2,6,18))
++extern struct nand_oobinfo yaffs_oobinfo;
++extern struct nand_oobinfo yaffs_noeccinfo;
++#endif
++
+ int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
+ const __u8 * data, const yaffs_Spare * spare);
+ int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
+--- a/fs/yaffs2/devextras.h
++++ b/fs/yaffs2/devextras.h
+@@ -1,5 +1,5 @@
+ /*
+- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+@@ -14,203 +14,145 @@
+ */
+
+ /*
+- * This file is just holds extra declarations used during development.
+- * Most of these are from kernel includes placed here so we can use them in
+- * applications.
++ * This file is just holds extra declarations of macros that would normally
++ * be providesd in the Linux kernel. These macros have been written from
++ * scratch but are functionally equivalent to the Linux ones.
+ *
+ */
+
+ #ifndef __EXTRAS_H__
+ #define __EXTRAS_H__
+
+-#if defined WIN32
+-#define __inline__ __inline
+-#define new newHack
+-#endif
+-
+-#if !(defined __KERNEL__) || (defined WIN32)
+
+-/* User space defines */
++#if !(defined __KERNEL__)
+
++/* Definition of types */
+ typedef unsigned char __u8;
+ typedef unsigned short __u16;
+ typedef unsigned __u32;
+
++#endif
++
+ /*
+- * Simple doubly linked list implementation.
+- *
+- * Some of the internal functions ("__xxx") are useful when
+- * manipulating whole lists rather than single entries, as
+- * sometimes we already know the next/prev entries and we can
+- * generate better code by using them directly rather than
+- * using the generic single-entry routines.
++ * This is a simple doubly linked list implementation that matches the
++ * way the Linux kernel doubly linked list implementation works.
+ */
+
+-#define prefetch(x) 1
+-
+-struct list_head {
+- struct list_head *next, *prev;
++struct ylist_head {
++ struct ylist_head *next; /* next in chain */
++ struct ylist_head *prev; /* previous in chain */
+ };
+
+-#define LIST_HEAD_INIT(name) { &(name), &(name) }
+
+-#define LIST_HEAD(name) \
+- struct list_head name = LIST_HEAD_INIT(name)
++/* Initialise a static list */
++#define YLIST_HEAD(name) \
++struct ylist_head name = { &(name),&(name)}
+
+-#define INIT_LIST_HEAD(ptr) do { \
+- (ptr)->next = (ptr); (ptr)->prev = (ptr); \
+-} while (0)
+
+-/*
+- * Insert a new entry between two known consecutive entries.
+- *
+- * This is only for internal list manipulation where we know
+- * the prev/next entries already!
+- */
+-static __inline__ void __list_add(struct list_head *new,
+- struct list_head *prev,
+- struct list_head *next)
+-{
+- next->prev = new;
+- new->next = next;
+- new->prev = prev;
+- prev->next = new;
+-}
+
+-/**
+- * list_add - add a new entry
+- * @new: new entry to be added
+- * @head: list head to add it after
+- *
+- * Insert a new entry after the specified head.
+- * This is good for implementing stacks.
+- */
+-static __inline__ void list_add(struct list_head *new, struct list_head *head)
+-{
+- __list_add(new, head, head->next);
+-}
++/* Initialise a list head to an empty list */
++#define YINIT_LIST_HEAD(p) \
++do { \
++ (p)->next = (p);\
++ (p)->prev = (p); \
++} while(0)
+
+-/**
+- * list_add_tail - add a new entry
+- * @new: new entry to be added
+- * @head: list head to add it before
+- *
+- * Insert a new entry before the specified head.
+- * This is useful for implementing queues.
+- */
+-static __inline__ void list_add_tail(struct list_head *new,
+- struct list_head *head)
++
++/* Add an element to a list */
++static __inline__ void ylist_add(struct ylist_head *newEntry,
++ struct ylist_head *list)
+ {
+- __list_add(new, head->prev, head);
++ struct ylist_head *listNext = list->next;
++
++ list->next = newEntry;
++ newEntry->prev = list;
++ newEntry->next = listNext;
++ listNext->prev = newEntry;
++
+ }
+
+-/*
+- * Delete a list entry by making the prev/next entries
+- * point to each other.
+- *
+- * This is only for internal list manipulation where we know
+- * the prev/next entries already!
+- */
+-static __inline__ void __list_del(struct list_head *prev,
+- struct list_head *next)
++static __inline__ void ylist_add_tail(struct ylist_head *newEntry,
++ struct ylist_head *list)
+ {
+- next->prev = prev;
+- prev->next = next;
++ struct ylist_head *listPrev = list->prev;
++
++ list->prev = newEntry;
++ newEntry->next = list;
++ newEntry->prev = listPrev;
++ listPrev->next = newEntry;
++
+ }
+
+-/**
+- * list_del - deletes entry from list.
+- * @entry: the element to delete from the list.
+- * Note: list_empty on entry does not return true after this, the entry is
+- * in an undefined state.
+- */
+-static __inline__ void list_del(struct list_head *entry)
++
++/* Take an element out of its current list, with or without
++ * reinitialising the links.of the entry*/
++static __inline__ void ylist_del(struct ylist_head *entry)
+ {
+- __list_del(entry->prev, entry->next);
++ struct ylist_head *listNext = entry->next;
++ struct ylist_head *listPrev = entry->prev;
++
++ listNext->prev = listPrev;
++ listPrev->next = listNext;
++
+ }
+
+-/**
+- * list_del_init - deletes entry from list and reinitialize it.
+- * @entry: the element to delete from the list.
+- */
+-static __inline__ void list_del_init(struct list_head *entry)
++static __inline__ void ylist_del_init(struct ylist_head *entry)
+ {
+- __list_del(entry->prev, entry->next);
+- INIT_LIST_HEAD(entry);
++ ylist_del(entry);
++ entry->next = entry->prev = entry;
+ }
+
+-/**
+- * list_empty - tests whether a list is empty
+- * @head: the list to test.
+- */
+-static __inline__ int list_empty(struct list_head *head)
++
++/* Test if the list is empty */
++static __inline__ int ylist_empty(struct ylist_head *entry)
+ {
+- return head->next == head;
++ return (entry->next == entry);
+ }
+
+-/**
+- * list_splice - join two lists
+- * @list: the new list to add.
+- * @head: the place to add it in the first list.
++
++/* ylist_entry takes a pointer to a list entry and offsets it to that
++ * we can find a pointer to the object it is embedded in.
+ */
+-static __inline__ void list_splice(struct list_head *list,
+- struct list_head *head)
+-{
+- struct list_head *first = list->next;
++
++
++#define ylist_entry(entry, type, member) \
++ ((type *)((char *)(entry)-(unsigned long)(&((type *)NULL)->member)))
+
+- if (first != list) {
+- struct list_head *last = list->prev;
+- struct list_head *at = head->next;
+-
+- first->prev = head;
+- head->next = first;
+-
+- last->next = at;
+- at->prev = last;
+- }
+-}
+
+-/**
+- * list_entry - get the struct for this entry
+- * @ptr: the &struct list_head pointer.
+- * @type: the type of the struct this is embedded in.
+- * @member: the name of the list_struct within the struct.
++/* ylist_for_each and list_for_each_safe iterate over lists.
++ * ylist_for_each_safe uses temporary storage to make the list delete safe
+ */
+-#define list_entry(ptr, type, member) \
+- ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
+
+-/**
+- * list_for_each - iterate over a list
+- * @pos: the &struct list_head to use as a loop counter.
+- * @head: the head for your list.
+- */
+-#define list_for_each(pos, head) \
+- for (pos = (head)->next, prefetch(pos->next); pos != (head); \
+- pos = pos->next, prefetch(pos->next))
+-
+-/**
+- * list_for_each_safe - iterate over a list safe against removal
+- * of list entry
+- * @pos: the &struct list_head to use as a loop counter.
+- * @n: another &struct list_head to use as temporary storage
+- * @head: the head for your list.
+- */
+-#define list_for_each_safe(pos, n, head) \
+- for (pos = (head)->next, n = pos->next; pos != (head); \
+- pos = n, n = pos->next)
++#define ylist_for_each(itervar, list) \
++ for (itervar = (list)->next; itervar != (list); itervar = itervar->next )
+
+-/*
+- * File types
+- */
+-#define DT_UNKNOWN 0
+-#define DT_FIFO 1
+-#define DT_CHR 2
++#define ylist_for_each_safe(itervar,saveVar, list) \
++ for (itervar = (list)->next, saveVar = (list)->next->next; itervar != (list); \
++ itervar = saveVar, saveVar = saveVar->next)
++
++
++#if !(defined __KERNEL__)
++
++
++#ifndef WIN32
++#include <sys/stat.h>
++#endif
++
++
++#ifdef CONFIG_YAFFS_PROVIDE_DEFS
++/* File types */
++
++
++#define DT_UNKNOWN 0
++#define DT_FIFO 1
++#define DT_CHR 2
+ #define DT_DIR 4
+ #define DT_BLK 6
+-#define DT_REG 8
+-#define DT_LNK 10
+-#define DT_SOCK 12
+-#define DT_WHT 14
++#define DT_REG 8
++#define DT_LNK 10
++#define DT_SOCK 12
++#define DT_WHT 14
++
+
+ #ifndef WIN32
+ #include <sys/stat.h>
+@@ -220,17 +162,13 @@ static __inline__ void list_splice(struc
+ * Attribute flags. These should be or-ed together to figure out what
+ * has been changed!
+ */
+-#define ATTR_MODE 1
+-#define ATTR_UID 2
++#define ATTR_MODE 1
++#define ATTR_UID 2
+ #define ATTR_GID 4
+ #define ATTR_SIZE 8
+ #define ATTR_ATIME 16
+ #define ATTR_MTIME 32
+ #define ATTR_CTIME 64
+-#define ATTR_ATIME_SET 128
+-#define ATTR_MTIME_SET 256
+-#define ATTR_FORCE 512 /* Not a change, but a change it */
+-#define ATTR_ATTR_FLAG 1024
+
+ struct iattr {
+ unsigned int ia_valid;
+@@ -241,24 +179,21 @@ struct iattr {
+ unsigned ia_atime;
+ unsigned ia_mtime;
+ unsigned ia_ctime;
+- unsigned int ia_attr_flags;
++ unsigned int ia_attr_flags;
+ };
+
++#endif
++
++
+ #define KERN_DEBUG
+
+ #else
+
+-#ifndef WIN32
+ #include <linux/types.h>
+-#include <linux/list.h>
+ #include <linux/fs.h>
+ #include <linux/stat.h>
+-#endif
+
+ #endif
+
+-#if defined WIN32
+-#undef new
+-#endif
+
+ #endif
+--- a/fs/yaffs2/yaffs_packedtags2.c
++++ b/fs/yaffs2/yaffs_packedtags2.c
+@@ -37,60 +37,70 @@
+ #define EXTRA_OBJECT_TYPE_SHIFT (28)
+ #define EXTRA_OBJECT_TYPE_MASK ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT)
+
+-static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt)
++
++static void yaffs_DumpPackedTags2TagsPart(const yaffs_PackedTags2TagsPart * ptt)
+ {
+ T(YAFFS_TRACE_MTD,
+ (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
+- pt->t.objectId, pt->t.chunkId, pt->t.byteCount,
+- pt->t.sequenceNumber));
++ ptt->objectId, ptt->chunkId, ptt->byteCount,
++ ptt->sequenceNumber));
++}
++static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt)
++{
++ yaffs_DumpPackedTags2TagsPart(&pt->t);
+ }
+
+ static void yaffs_DumpTags2(const yaffs_ExtendedTags * t)
+ {
+ T(YAFFS_TRACE_MTD,
+ (TSTR
+- ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte "
+- "%d del %d ser %d seq %d"
++ ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte %d del %d ser %d seq %d"
+ TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId,
+ t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber,
+ t->sequenceNumber));
+
+ }
+
+-void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t)
++void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart * ptt, const yaffs_ExtendedTags * t)
+ {
+- pt->t.chunkId = t->chunkId;
+- pt->t.sequenceNumber = t->sequenceNumber;
+- pt->t.byteCount = t->byteCount;
+- pt->t.objectId = t->objectId;
++ ptt->chunkId = t->chunkId;
++ ptt->sequenceNumber = t->sequenceNumber;
++ ptt->byteCount = t->byteCount;
++ ptt->objectId = t->objectId;
+
+ if (t->chunkId == 0 && t->extraHeaderInfoAvailable) {
+ /* Store the extra header info instead */
+ /* We save the parent object in the chunkId */
+- pt->t.chunkId = EXTRA_HEADER_INFO_FLAG
++ ptt->chunkId = EXTRA_HEADER_INFO_FLAG
+ | t->extraParentObjectId;
+ if (t->extraIsShrinkHeader) {
+- pt->t.chunkId |= EXTRA_SHRINK_FLAG;
++ ptt->chunkId |= EXTRA_SHRINK_FLAG;
+ }
+ if (t->extraShadows) {
+- pt->t.chunkId |= EXTRA_SHADOWS_FLAG;
++ ptt->chunkId |= EXTRA_SHADOWS_FLAG;
+ }
+
+- pt->t.objectId &= ~EXTRA_OBJECT_TYPE_MASK;
+- pt->t.objectId |=
++ ptt->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
++ ptt->objectId |=
+ (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
+
+ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
+- pt->t.byteCount = t->extraEquivalentObjectId;
++ ptt->byteCount = t->extraEquivalentObjectId;
+ } else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) {
+- pt->t.byteCount = t->extraFileLength;
++ ptt->byteCount = t->extraFileLength;
+ } else {
+- pt->t.byteCount = 0;
++ ptt->byteCount = 0;
+ }
+ }
+
+- yaffs_DumpPackedTags2(pt);
++ yaffs_DumpPackedTags2TagsPart(ptt);
+ yaffs_DumpTags2(t);
++}
++
++
++void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t)
++{
++ yaffs_PackTags2TagsPart(&pt->t,t);
+
+ #ifndef YAFFS_IGNORE_TAGS_ECC
+ {
+@@ -101,20 +111,63 @@ void yaffs_PackTags2(yaffs_PackedTags2 *
+ #endif
+ }
+
+-void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt)
++
++void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags * t, yaffs_PackedTags2TagsPart * ptt)
+ {
+
+ memset(t, 0, sizeof(yaffs_ExtendedTags));
+
+ yaffs_InitialiseTags(t);
+
++ if (ptt->sequenceNumber != 0xFFFFFFFF) {
++ t->blockBad = 0;
++ t->chunkUsed = 1;
++ t->objectId = ptt->objectId;
++ t->chunkId = ptt->chunkId;
++ t->byteCount = ptt->byteCount;
++ t->chunkDeleted = 0;
++ t->serialNumber = 0;
++ t->sequenceNumber = ptt->sequenceNumber;
++
++ /* Do extra header info stuff */
++
++ if (ptt->chunkId & EXTRA_HEADER_INFO_FLAG) {
++ t->chunkId = 0;
++ t->byteCount = 0;
++
++ t->extraHeaderInfoAvailable = 1;
++ t->extraParentObjectId =
++ ptt->chunkId & (~(ALL_EXTRA_FLAGS));
++ t->extraIsShrinkHeader =
++ (ptt->chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
++ t->extraShadows =
++ (ptt->chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
++ t->extraObjectType =
++ ptt->objectId >> EXTRA_OBJECT_TYPE_SHIFT;
++ t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
++
++ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ t->extraEquivalentObjectId = ptt->byteCount;
++ } else {
++ t->extraFileLength = ptt->byteCount;
++ }
++ }
++ }
++
++ yaffs_DumpPackedTags2TagsPart(ptt);
++ yaffs_DumpTags2(t);
++
++}
++
++
++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt)
++{
++
++ yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++
+ if (pt->t.sequenceNumber != 0xFFFFFFFF) {
+ /* Page is in use */
+-#ifdef YAFFS_IGNORE_TAGS_ECC
+- {
+- t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+- }
+-#else
++#ifndef YAFFS_IGNORE_TAGS_ECC
+ {
+ yaffs_ECCOther ecc;
+ int result;
+@@ -129,54 +182,27 @@ void yaffs_UnpackTags2(yaffs_ExtendedTag
+ &pt->ecc, &ecc);
+ switch(result){
+ case 0:
+- t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++ eccResult = YAFFS_ECC_RESULT_NO_ERROR;
+ break;
+ case 1:
+- t->eccResult = YAFFS_ECC_RESULT_FIXED;
++ eccResult = YAFFS_ECC_RESULT_FIXED;
+ break;
+ case -1:
+- t->eccResult = YAFFS_ECC_RESULT_UNFIXED;
++ eccResult = YAFFS_ECC_RESULT_UNFIXED;
+ break;
+ default:
+- t->eccResult = YAFFS_ECC_RESULT_UNKNOWN;
++ eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+ }
+ }
+ #endif
+- t->blockBad = 0;
+- t->chunkUsed = 1;
+- t->objectId = pt->t.objectId;
+- t->chunkId = pt->t.chunkId;
+- t->byteCount = pt->t.byteCount;
+- t->chunkDeleted = 0;
+- t->serialNumber = 0;
+- t->sequenceNumber = pt->t.sequenceNumber;
+-
+- /* Do extra header info stuff */
+-
+- if (pt->t.chunkId & EXTRA_HEADER_INFO_FLAG) {
+- t->chunkId = 0;
+- t->byteCount = 0;
+-
+- t->extraHeaderInfoAvailable = 1;
+- t->extraParentObjectId =
+- pt->t.chunkId & (~(ALL_EXTRA_FLAGS));
+- t->extraIsShrinkHeader =
+- (pt->t.chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
+- t->extraShadows =
+- (pt->t.chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
+- t->extraObjectType =
+- pt->t.objectId >> EXTRA_OBJECT_TYPE_SHIFT;
+- t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
+-
+- if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
+- t->extraEquivalentObjectId = pt->t.byteCount;
+- } else {
+- t->extraFileLength = pt->t.byteCount;
+- }
+- }
+ }
+
++ yaffs_UnpackTags2TagsPart(t,&pt->t);
++
++ t->eccResult = eccResult;
++
+ yaffs_DumpPackedTags2(pt);
+ yaffs_DumpTags2(t);
+
+ }
++
+--- a/fs/yaffs2/yaffs_ecc.c
++++ b/fs/yaffs2/yaffs_ecc.c
+@@ -29,7 +29,7 @@
+ */
+
+ const char *yaffs_ecc_c_version =
+- "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $";
++ "$Id: yaffs_ecc.c,v 1.10 2007-12-13 15:35:17 wookey Exp $";
+
+ #include "yportenv.h"
+
+--- a/fs/yaffs2/yaffs_packedtags2.h
++++ b/fs/yaffs2/yaffs_packedtags2.h
+@@ -33,6 +33,11 @@ typedef struct {
+ yaffs_ECCOther ecc;
+ } yaffs_PackedTags2;
+
++/* Full packed tags with ECC, used for oob tags */
+ void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t);
+ void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt);
++
++/* Only the tags part (no ECC for use with inband tags */
++void yaffs_PackTags2TagsPart(yaffs_PackedTags2TagsPart * pt, const yaffs_ExtendedTags * t);
++void yaffs_UnpackTags2TagsPart(yaffs_ExtendedTags * t, yaffs_PackedTags2TagsPart * pt);
+ #endif
+--- a/fs/yaffs2/yportenv.h
++++ b/fs/yaffs2/yportenv.h
+@@ -17,6 +17,14 @@
+ #ifndef __YPORTENV_H__
+ #define __YPORTENV_H__
+
++/*
++ * Define the MTD version in terms of Linux Kernel versions
++ * This allows yaffs to be used independantly of the kernel
++ * as well as with it.
++ */
++
++#define MTD_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
++
+ #if defined CONFIG_YAFFS_WINCE
+
+ #include "ywinceenv.h"
+@@ -26,7 +34,10 @@
+ #include "moduleconfig.h"
+
+ /* Linux kernel */
++
+ #include <linux/version.h>
++#define MTD_VERSION_CODE LINUX_VERSION_CODE
++
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
+ #include <linux/config.h>
+ #endif
+@@ -40,6 +51,7 @@
+ #define YCHAR char
+ #define YUCHAR unsigned char
+ #define _Y(x) x
++#define yaffs_strcat(a,b) strcat(a,b)
+ #define yaffs_strcpy(a,b) strcpy(a,b)
+ #define yaffs_strncpy(a,b,c) strncpy(a,b,c)
+ #define yaffs_strncmp(a,b,c) strncmp(a,b,c)
+@@ -90,6 +102,8 @@
+
+ #elif defined CONFIG_YAFFS_DIRECT
+
++#define MTD_VERSION_CODE MTD_VERSION(2,6,22)
++
+ /* Direct interface */
+ #include "ydirectenv.h"
+
+@@ -111,6 +125,7 @@
+ #define YCHAR char
+ #define YUCHAR unsigned char
+ #define _Y(x) x
++#define yaffs_strcat(a,b) strcat(a,b)
+ #define yaffs_strcpy(a,b) strcpy(a,b)
+ #define yaffs_strncpy(a,b,c) strncpy(a,b,c)
+ #define yaffs_strlen(s) strlen(s)
+@@ -180,8 +195,8 @@ extern unsigned int yaffs_wr_attempts;
+
+ #define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0)
+
+-#ifndef CONFIG_YAFFS_WINCE
+-#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__))
++#ifndef YBUG
++#define YBUG() do {T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__));} while(0)
+ #endif
+
+ #endif
+--- a/fs/yaffs2/Makefile
++++ b/fs/yaffs2/Makefile
+@@ -5,7 +5,6 @@
+ obj-$(CONFIG_YAFFS_FS) += yaffs.o
+
+ yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
+-yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
++yaffs-y += yaffs_packedtags1.o yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
+ yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
+-yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o
+-yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o
++yaffs-y += yaffs_mtdif.o yaffs_mtdif1.o yaffs_mtdif2.o
+--- a/fs/yaffs2/yaffs_mtdif1-compat.c
++++ /dev/null
+@@ -1,434 +0,0 @@
+-From ian@brightstareng.com Fri May 18 15:06:49 2007
+-From ian@brightstareng.com Fri May 18 15:08:21 2007
+-Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com)
+- by apollo.linkchoose.co.uk with esmtp (Exim 4.60)
+- (envelope-from <ian@brightstareng.com>)
+- id 1Hp380-00011e-T6
+- for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100
+-Received: from localhost (localhost.localdomain [127.0.0.1])
+- by zebra.brightstareng.com (Postfix) with ESMTP
+- id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT)
+-Received: from zebra.brightstareng.com ([127.0.0.1])
+- by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP
+- id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT)
+-Received: from pippin (unknown [192.168.1.25])
+- by zebra.brightstareng.com (Postfix) with ESMTP
+- id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT)
+-From: Ian McDonnell <ian@brightstareng.com>
+-To: David Goodenough <david.goodenough@linkchoose.co.uk>
+-Subject: Re: something tested this time -- yaffs_mtdif1-compat.c
+-Date: Fri, 18 May 2007 10:06:49 -0400
+-User-Agent: KMail/1.9.1
+-References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk>
+-In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk>
+-Cc: Andrea Conti <alyf@alyf.net>,
+- Charles Manning <manningc2@actrix.gen.nz>
+-MIME-Version: 1.0
+-Content-Type: Multipart/Mixed;
+- boundary="Boundary-00=_5LbTGmt62YoutxM"
+-Message-Id: <200705181006.49860.ian@brightstareng.com>
+-X-Virus-Scanned: by amavisd-new at brightstareng.com
+-Status: R
+-X-Status: NT
+-X-KMail-EncryptionState:
+-X-KMail-SignatureState:
+-X-KMail-MDN-Sent:
+-
+---Boundary-00=_5LbTGmt62YoutxM
+-Content-Type: text/plain;
+- charset="iso-8859-15"
+-Content-Transfer-Encoding: 7bit
+-Content-Disposition: inline
+-
+-David, Andrea,
+-
+-On Friday 18 May 2007 08:34, you wrote:
+-> Yea team. With this fix in place (I put it in the wrong place
+-> at first) I can now mount and ls the Yaffs partition without
+-> an error messages!
+-
+-Good news!
+-
+-Attached is a newer yaffs_mtdif1.c with a bandaid to help the
+-2.6.18 and 2.6.19 versions of MTD not trip on the oob read.
+-See the LINUX_VERSION_CODE conditional in
+-nandmtd1_ReadChunkWithTagsFromNAND.
+-
+--imcd
+-
+---Boundary-00=_5LbTGmt62YoutxM
+-Content-Type: text/x-csrc;
+- charset="iso-8859-15";
+- name="yaffs_mtdif1.c"
+-Content-Transfer-Encoding: 7bit
+-Content-Disposition: attachment;
+- filename="yaffs_mtdif1.c"
+-
+-/*
+- * YAFFS: Yet another FFS. A NAND-flash specific file system.
+- * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
+- *
+- * Copyright (C) 2002 Aleph One Ltd.
+- * for Toby Churchill Ltd and Brightstar Engineering
+- *
+- * This program is free software; you can redistribute it and/or modify
+- * it under the terms of the GNU General Public License version 2 as
+- * published by the Free Software Foundation.
+- */
+-
+-/*
+- * This module provides the interface between yaffs_nand.c and the
+- * MTD API. This version is used when the MTD interface supports the
+- * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
+- * and we have small-page NAND device.
+- *
+- * These functions are invoked via function pointers in yaffs_nand.c.
+- * This replaces functionality provided by functions in yaffs_mtdif.c
+- * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
+- * called in yaffs_mtdif.c when the function pointers are NULL.
+- * We assume the MTD layer is performing ECC (useNANDECC is true).
+- */
+-
+-#include "yportenv.h"
+-#include "yaffs_guts.h"
+-#include "yaffs_packedtags1.h"
+-#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
+-
+-#include "linux/kernel.h"
+-#include "linux/version.h"
+-#include "linux/types.h"
+-#include "linux/mtd/mtd.h"
+-
+-/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+-
+-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1-compat.c 13022 2008-10-22 06:51:06Z nbd $";
+-
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+-# define YTAG1_SIZE 8
+-#else
+-# define YTAG1_SIZE 9
+-#endif
+-
+-#if 0
+-/* Use the following nand_ecclayout with MTD when using
+- * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
+- * If you have existing Yaffs images and the byte order differs from this,
+- * adjust 'oobfree' to match your existing Yaffs data.
+- *
+- * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
+- * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
+- * the 9th byte.
+- *
+- * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
+- * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
+- * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
+- * byte and B is the small-page bad-block indicator byte.
+- */
+-static struct nand_ecclayout nand_oob_16 = {
+- .eccbytes = 6,
+- .eccpos = { 8, 9, 10, 13, 14, 15 },
+- .oobavail = 9,
+- .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
+-};
+-#endif
+-
+-/* Write a chunk (page) of data to NAND.
+- *
+- * Caller always provides ExtendedTags data which are converted to a more
+- * compact (packed) form for storage in NAND. A mini-ECC runs over the
+- * contents of the tags meta-data; used to valid the tags when read.
+- *
+- * - Pack ExtendedTags to PackedTags1 form
+- * - Compute mini-ECC for PackedTags1
+- * - Write data and packed tags to NAND.
+- *
+- * Note: Due to the use of the PackedTags1 meta-data which does not include
+- * a full sequence number (as found in the larger PackedTags2 form) it is
+- * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
+- * discarded and dirty. This is not ideal: newer NAND parts are supposed
+- * to be written just once. When Yaffs performs this operation, this
+- * function is called with a NULL data pointer -- calling MTD write_oob
+- * without data is valid usage (2.6.17).
+- *
+- * Any underlying MTD error results in YAFFS_FAIL.
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
+- int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
+-{
+- struct mtd_info * mtd = dev->genericDevice;
+- int chunkBytes = dev->nDataBytesPerChunk;
+- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+- struct mtd_oob_ops ops;
+- yaffs_PackedTags1 pt1;
+- int retval;
+-
+- /* we assume that PackedTags1 and yaffs_Tags are compatible */
+- compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
+- compile_time_assertion(sizeof(yaffs_Tags) == 8);
+-
+- yaffs_PackTags1(&pt1, etags);
+- yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
+-
+- /* When deleting a chunk, the upper layer provides only skeletal
+- * etags, one with chunkDeleted set. However, we need to update the
+- * tags, not erase them completely. So we use the NAND write property
+- * that only zeroed-bits stick and set tag bytes to all-ones and
+- * zero just the (not) deleted bit.
+- */
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+- if (etags->chunkDeleted) {
+- memset(&pt1, 0xff, 8);
+- /* clear delete status bit to indicate deleted */
+- pt1.deleted = 0;
+- }
+-#else
+- ((__u8 *)&pt1)[8] = 0xff;
+- if (etags->chunkDeleted) {
+- memset(&pt1, 0xff, 8);
+- /* zero pageStatus byte to indicate deleted */
+- ((__u8 *)&pt1)[8] = 0;
+- }
+-#endif
+-
+- memset(&ops, 0, sizeof(ops));
+- ops.mode = MTD_OOB_AUTO;
+- ops.len = (data) ? chunkBytes : 0;
+- ops.ooblen = YTAG1_SIZE;
+- ops.datbuf = (__u8 *)data;
+- ops.oobbuf = (__u8 *)&pt1;
+-
+- retval = mtd->write_oob(mtd, addr, &ops);
+- if (retval) {
+- yaffs_trace(YAFFS_TRACE_MTD,
+- "write_oob failed, chunk %d, mtd error %d\n",
+- chunkInNAND, retval);
+- }
+- return retval ? YAFFS_FAIL : YAFFS_OK;
+-}
+-
+-/* Return with empty ExtendedTags but add eccResult.
+- */
+-static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
+-{
+- if (etags) {
+- memset(etags, 0, sizeof(*etags));
+- etags->eccResult = eccResult;
+- }
+- return retval;
+-}
+-
+-/* Read a chunk (page) from NAND.
+- *
+- * Caller expects ExtendedTags data to be usable even on error; that is,
+- * all members except eccResult and blockBad are zeroed.
+- *
+- * - Check ECC results for data (if applicable)
+- * - Check for blank/erased block (return empty ExtendedTags if blank)
+- * - Check the PackedTags1 mini-ECC (correct if necessary/possible)
+- * - Convert PackedTags1 to ExtendedTags
+- * - Update eccResult and blockBad members to refect state.
+- *
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
+- int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
+-{
+- struct mtd_info * mtd = dev->genericDevice;
+- int chunkBytes = dev->nDataBytesPerChunk;
+- loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
+- int eccres = YAFFS_ECC_RESULT_NO_ERROR;
+- struct mtd_oob_ops ops;
+- yaffs_PackedTags1 pt1;
+- int retval;
+- int deleted;
+-
+- memset(&ops, 0, sizeof(ops));
+- ops.mode = MTD_OOB_AUTO;
+- ops.len = (data) ? chunkBytes : 0;
+- ops.ooblen = YTAG1_SIZE;
+- ops.datbuf = data;
+- ops.oobbuf = (__u8 *)&pt1;
+-
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
+- /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
+- * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
+- */
+- ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
+-#endif
+- /* Read page and oob using MTD.
+- * Check status and determine ECC result.
+- */
+- retval = mtd->read_oob(mtd, addr, &ops);
+- if (retval) {
+- yaffs_trace(YAFFS_TRACE_MTD,
+- "read_oob failed, chunk %d, mtd error %d\n",
+- chunkInNAND, retval);
+- }
+-
+- switch (retval) {
+- case 0:
+- /* no error */
+- break;
+-
+- case -EUCLEAN:
+- /* MTD's ECC fixed the data */
+- eccres = YAFFS_ECC_RESULT_FIXED;
+- dev->eccFixed++;
+- break;
+-
+- case -EBADMSG:
+- /* MTD's ECC could not fix the data */
+- dev->eccUnfixed++;
+- /* fall into... */
+- default:
+- rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
+- etags->blockBad = (mtd->block_isbad)(mtd, addr);
+- return YAFFS_FAIL;
+- }
+-
+- /* Check for a blank/erased chunk.
+- */
+- if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
+- /* when blank, upper layers want eccResult to be <= NO_ERROR */
+- return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
+- }
+-
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+- /* Read deleted status (bit) then return it to it's non-deleted
+- * state before performing tags mini-ECC check. pt1.deleted is
+- * inverted.
+- */
+- deleted = !pt1.deleted;
+- pt1.deleted = 1;
+-#else
+- (void) deleted; /* not used */
+-#endif
+-
+- /* Check the packed tags mini-ECC and correct if necessary/possible.
+- */
+- retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
+- switch (retval) {
+- case 0:
+- /* no tags error, use MTD result */
+- break;
+- case 1:
+- /* recovered tags-ECC error */
+- dev->tagsEccFixed++;
+- eccres = YAFFS_ECC_RESULT_FIXED;
+- break;
+- default:
+- /* unrecovered tags-ECC error */
+- dev->tagsEccUnfixed++;
+- return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
+- }
+-
+- /* Unpack the tags to extended form and set ECC result.
+- * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
+- */
+- pt1.shouldBeFF = 0xFFFFFFFF;
+- yaffs_UnpackTags1(etags, &pt1);
+- etags->eccResult = eccres;
+-
+- /* Set deleted state.
+- */
+-#ifndef CONFIG_YAFFS_9BYTE_TAGS
+- etags->chunkDeleted = deleted;
+-#else
+- etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
+-#endif
+- return YAFFS_OK;
+-}
+-
+-/* Mark a block bad.
+- *
+- * This is a persistant state.
+- * Use of this function should be rare.
+- *
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
+-{
+- struct mtd_info * mtd = dev->genericDevice;
+- int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
+- int retval;
+-
+- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
+-
+- retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
+- return (retval) ? YAFFS_FAIL : YAFFS_OK;
+-}
+-
+-/* Check any MTD prerequists.
+- *
+- * Returns YAFFS_OK or YAFFS_FAIL.
+- */
+-static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
+-{
+- /* 2.6.18 has mtd->ecclayout->oobavail */
+- /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
+- int oobavail = mtd->ecclayout->oobavail;
+-
+- if (oobavail < YTAG1_SIZE) {
+- yaffs_trace(YAFFS_TRACE_ERROR,
+- "mtd device has only %d bytes for tags, need %d",
+- oobavail, YTAG1_SIZE);
+- return YAFFS_FAIL;
+- }
+- return YAFFS_OK;
+-}
+-
+-/* Query for the current state of a specific block.
+- *
+- * Examine the tags of the first chunk of the block and return the state:
+- * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
+- * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
+- * - YAFFS_BLOCK_STATE_EMPTY, the block is clean
+- *
+- * Always returns YAFFS_OK.
+- */
+-int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+- yaffs_BlockState * pState, int *pSequenceNumber)
+-{
+- struct mtd_info * mtd = dev->genericDevice;
+- int chunkNo = blockNo * dev->nChunksPerBlock;
+- yaffs_ExtendedTags etags;
+- int state = YAFFS_BLOCK_STATE_DEAD;
+- int seqnum = 0;
+- int retval;
+-
+- /* We don't yet have a good place to test for MTD config prerequists.
+- * Do it here as we are called during the initial scan.
+- */
+- if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
+- return YAFFS_FAIL;
+- }
+-
+- retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
+- if (etags.blockBad) {
+- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+- "block %d is marked bad", blockNo);
+- state = YAFFS_BLOCK_STATE_DEAD;
+- }
+- else if (etags.chunkUsed) {
+- state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+- seqnum = etags.sequenceNumber;
+- }
+- else {
+- state = YAFFS_BLOCK_STATE_EMPTY;
+- }
+-
+- *pState = state;
+- *pSequenceNumber = seqnum;
+-
+- /* query always succeeds */
+- return YAFFS_OK;
+-}
+-
+-#endif /*KERNEL_VERSION*/
+-
+---Boundary-00=_5LbTGmt62YoutxM--
+-
+-
+-
+--- a/fs/yaffs2/yaffs_fs.c
++++ b/fs/yaffs2/yaffs_fs.c
+@@ -32,7 +32,7 @@
+ */
+
+ const char *yaffs_fs_c_version =
+- "$Id: yaffs_fs.c,v 1.63 2007-09-19 20:35:40 imcd Exp $";
++ "$Id: yaffs_fs.c,v 1.71 2009-01-22 00:45:54 charles Exp $";
+ extern const char *yaffs_guts_c_version;
+
+ #include <linux/version.h>
+@@ -43,7 +43,6 @@ extern const char *yaffs_guts_c_version;
+ #include <linux/module.h>
+ #include <linux/slab.h>
+ #include <linux/init.h>
+-#include <linux/list.h>
+ #include <linux/fs.h>
+ #include <linux/proc_fs.h>
+ #include <linux/smp_lock.h>
+@@ -53,6 +52,8 @@ extern const char *yaffs_guts_c_version;
+ #include <linux/string.h>
+ #include <linux/ctype.h>
+
++#include "asm/div64.h"
++
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+
+ #include <linux/statfs.h> /* Added NCB 15-8-2003 */
+@@ -76,6 +77,12 @@ extern const char *yaffs_guts_c_version;
+
+ #endif
+
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,26))
++#define YPROC_ROOT &proc_root
++#else
++#define YPROC_ROOT NULL
++#endif
++
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ #define WRITE_SIZE_STR "writesize"
+ #define WRITE_SIZE(mtd) (mtd)->writesize
+@@ -84,6 +91,13 @@ extern const char *yaffs_guts_c_version;
+ #define WRITE_SIZE(mtd) (mtd)->oobblock
+ #endif
+
++#if(LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27))
++#define YAFFS_USE_WRITE_BEGIN_END 1
++#else
++#define YAFFS_USE_WRITE_BEGIN_END 0
++#endif
++
++
+ #include <asm/uaccess.h>
+
+ #include "yportenv.h"
+@@ -96,14 +110,30 @@ extern const char *yaffs_guts_c_version;
+
+ unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS;
+ unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
++unsigned int yaffs_auto_checkpoint = 1;
+
+ /* Module Parameters */
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
+ module_param(yaffs_traceMask,uint,0644);
+ module_param(yaffs_wr_attempts,uint,0644);
++module_param(yaffs_auto_checkpoint,uint,0644);
+ #else
+ MODULE_PARM(yaffs_traceMask,"i");
+ MODULE_PARM(yaffs_wr_attempts,"i");
++MODULE_PARM(yaffs_auto_checkpoint,"i");
++#endif
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25))
++/* use iget and read_inode */
++#define Y_IGET(sb,inum) iget((sb),(inum))
++static void yaffs_read_inode(struct inode *inode);
++
++#else
++/* Call local equivalent */
++#define YAFFS_USE_OWN_IGET
++#define Y_IGET(sb,inum) yaffs_iget((sb),(inum))
++
++static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino);
+ #endif
+
+ /*#define T(x) printk x */
+@@ -127,6 +157,8 @@ static void yaffs_put_super(struct super
+
+ static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
+ loff_t * pos);
++static ssize_t yaffs_hold_space(struct file *f);
++static void yaffs_release_space(struct file *f);
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ static int yaffs_file_flush(struct file *file, fl_owner_t id);
+@@ -181,9 +213,11 @@ static int yaffs_statfs(struct super_blo
+ #else
+ static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
+ #endif
+-static void yaffs_read_inode(struct inode *inode);
+
++#ifdef YAFFS_HAS_PUT_INODE
+ static void yaffs_put_inode(struct inode *inode);
++#endif
++
+ static void yaffs_delete_inode(struct inode *);
+ static void yaffs_clear_inode(struct inode *);
+
+@@ -193,10 +227,22 @@ static int yaffs_writepage(struct page *
+ #else
+ static int yaffs_writepage(struct page *page);
+ #endif
++
++
++#if (YAFFS_USE_WRITE_BEGIN_END != 0)
++static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
++ loff_t pos, unsigned len, unsigned flags,
++ struct page **pagep, void **fsdata);
++static int yaffs_write_end(struct file *filp, struct address_space *mapping,
++ loff_t pos, unsigned len, unsigned copied,
++ struct page *pg, void *fsdadata);
++#else
+ static int yaffs_prepare_write(struct file *f, struct page *pg,
+ unsigned offset, unsigned to);
+ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
+ unsigned to);
++
++#endif
+
+ static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
+ int buflen);
+@@ -209,8 +255,13 @@ static int yaffs_follow_link(struct dent
+ static struct address_space_operations yaffs_file_address_operations = {
+ .readpage = yaffs_readpage,
+ .writepage = yaffs_writepage,
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++ .write_begin = yaffs_write_begin,
++ .write_end = yaffs_write_end,
++#else
+ .prepare_write = yaffs_prepare_write,
+ .commit_write = yaffs_commit_write,
++#endif
+ };
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,22))
+@@ -224,6 +275,7 @@ static struct file_operations yaffs_file
+ .fsync = yaffs_sync_object,
+ .splice_read = generic_file_splice_read,
+ .splice_write = generic_file_splice_write,
++ .llseek = generic_file_llseek,
+ };
+
+ #elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
+@@ -284,8 +336,13 @@ static struct file_operations yaffs_dir_
+
+ static struct super_operations yaffs_super_ops = {
+ .statfs = yaffs_statfs,
++
++#ifndef YAFFS_USE_OWN_IGET
+ .read_inode = yaffs_read_inode,
++#endif
++#ifdef YAFFS_HAS_PUT_INODE
+ .put_inode = yaffs_put_inode,
++#endif
+ .put_super = yaffs_put_super,
+ .delete_inode = yaffs_delete_inode,
+ .clear_inode = yaffs_clear_inode,
+@@ -429,6 +486,9 @@ static struct dentry *yaffs_lookup(struc
+
+ }
+
++
++#ifdef YAFFS_HAS_PUT_INODE
++
+ /* For now put inode is just for debugging
+ * Put inode is called when the inode **structure** is put.
+ */
+@@ -439,6 +499,7 @@ static void yaffs_put_inode(struct inode
+ atomic_read(&inode->i_count)));
+
+ }
++#endif
+
+ /* clear is called to tell the fs to release any per-inode data it holds */
+ static void yaffs_clear_inode(struct inode *inode)
+@@ -667,6 +728,64 @@ static int yaffs_writepage(struct page *
+ return (nWritten == nBytes) ? 0 : -ENOSPC;
+ }
+
++
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++static int yaffs_write_begin(struct file *filp, struct address_space *mapping,
++ loff_t pos, unsigned len, unsigned flags,
++ struct page **pagep, void **fsdata)
++
++{
++ struct page *pg = NULL;
++ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
++ uint32_t offset = pos & (PAGE_CACHE_SIZE - 1);
++ uint32_t to = offset + len;
++
++ int ret = 0;
++ int space_held = 0;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "start yaffs_write_begin\n"));
++ /* Get a page */
++ pg = __grab_cache_page(mapping,index);
++ *pagep = pg;
++ if(!pg){
++ ret = -ENOMEM;
++ goto out;
++ }
++ /* Get fs space */
++ space_held = yaffs_hold_space(filp);
++
++ if(!space_held){
++ ret = -ENOSPC;
++ goto out;
++ }
++
++ /* Update page if required */
++
++ if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
++ ret = yaffs_readpage_nolock(filp, pg);
++
++ if(ret)
++ goto out;
++
++ /* Happy path return */
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "end yaffs_write_begin - ok\n"));
++
++ return 0;
++
++out:
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "end yaffs_write_begin fail returning %d\n",ret));
++ if(space_held){
++ yaffs_release_space(filp);
++ }
++ if(pg) {
++ unlock_page(pg);
++ page_cache_release(pg);
++ }
++ return ret;
++}
++
++#else
++
+ static int yaffs_prepare_write(struct file *f, struct page *pg,
+ unsigned offset, unsigned to)
+ {
+@@ -674,22 +793,69 @@ static int yaffs_prepare_write(struct fi
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n"));
+ if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
+ return yaffs_readpage_nolock(f, pg);
+-
+ return 0;
+
+ }
++#endif
++
++#if (YAFFS_USE_WRITE_BEGIN_END > 0)
++static int yaffs_write_end(struct file *filp, struct address_space *mapping,
++ loff_t pos, unsigned len, unsigned copied,
++ struct page *pg, void *fsdadata)
++{
++ int ret = 0;
++ void *addr, *kva;
++ pgoff_t index = pos >> PAGE_CACHE_SHIFT;
++ uint32_t offset_into_page = pos & (PAGE_CACHE_SIZE -1);
++
++
++
++ kva=kmap(pg);
++ addr = kva + offset_into_page;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_write_end addr %x pos %x nBytes %d\n", (unsigned) addr,
++ (int)pos, copied));
++
++ ret = yaffs_file_write(filp, addr, copied, &pos);
++
++ if (ret != copied) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG
++ "yaffs_write_end not same size ret %d copied %d\n",
++ ret, copied ));
++ SetPageError(pg);
++ ClearPageUptodate(pg);
++ } else {
++ SetPageUptodate(pg);
++ }
++
++ kunmap(pg);
++
++ yaffs_release_space(filp);
++ unlock_page(pg);
++ page_cache_release(pg);
++ return ret;
++}
++#else
+
+ static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
+ unsigned to)
+ {
+
+- void *addr = page_address(pg) + offset;
++ void *addr, *kva;
++
+ loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
+ int nBytes = to - offset;
+ int nWritten;
+
+ unsigned spos = pos;
+- unsigned saddr = (unsigned)addr;
++ unsigned saddr;
++
++ kva=kmap(pg);
++ addr = kva + offset;
++
++ saddr = (unsigned) addr;
+
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
+@@ -708,6 +874,8 @@ static int yaffs_commit_write(struct fil
+ SetPageUptodate(pg);
+ }
+
++ kunmap(pg);
++
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG "yaffs_commit_write returning %d\n",
+ nWritten == nBytes ? 0 : nWritten));
+@@ -715,6 +883,8 @@ static int yaffs_commit_write(struct fil
+ return nWritten == nBytes ? 0 : nWritten;
+
+ }
++#endif
++
+
+ static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj)
+ {
+@@ -753,6 +923,8 @@ static void yaffs_FillInodeFromObject(st
+ break;
+ }
+
++ inode->i_flags |= S_NOATIME;
++
+ inode->i_ino = obj->objectId;
+ inode->i_mode = obj->yst_mode;
+ inode->i_uid = obj->yst_uid;
+@@ -844,7 +1016,9 @@ struct inode *yaffs_get_inode(struct sup
+ T(YAFFS_TRACE_OS,
+ (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId));
+
+- inode = iget(sb, obj->objectId);
++ inode = Y_IGET(sb, obj->objectId);
++ if(IS_ERR(inode))
++ return NULL;
+
+ /* NB Side effect: iget calls back to yaffs_read_inode(). */
+ /* iget also increments the inode's i_count */
+@@ -910,13 +1084,55 @@ static ssize_t yaffs_file_write(struct f
+ return nWritten == 0 ? -ENOSPC : nWritten;
+ }
+
++/* Space holding and freeing is done to ensure we have space available for write_begin/end */
++/* For now we just assume few parallel writes and check against a small number. */
++/* Todo: need to do this with a counter to handle parallel reads better */
++
++static ssize_t yaffs_hold_space(struct file *f)
++{
++ yaffs_Object *obj;
++ yaffs_Device *dev;
++
++ int nFreeChunks;
++
++
++ obj = yaffs_DentryToObject(f->f_dentry);
++
++ dev = obj->myDev;
++
++ yaffs_GrossLock(dev);
++
++ nFreeChunks = yaffs_GetNumberOfFreeChunks(dev);
++
++ yaffs_GrossUnlock(dev);
++
++ return (nFreeChunks > 20) ? 1 : 0;
++}
++
++static void yaffs_release_space(struct file *f)
++{
++ yaffs_Object *obj;
++ yaffs_Device *dev;
++
++
++ obj = yaffs_DentryToObject(f->f_dentry);
++
++ dev = obj->myDev;
++
++ yaffs_GrossLock(dev);
++
++
++ yaffs_GrossUnlock(dev);
++
++}
++
+ static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
+ {
+ yaffs_Object *obj;
+ yaffs_Device *dev;
+ struct inode *inode = f->f_dentry->d_inode;
+ unsigned long offset, curoffs;
+- struct list_head *i;
++ struct ylist_head *i;
+ yaffs_Object *l;
+
+ char name[YAFFS_MAX_NAME_LENGTH + 1];
+@@ -965,10 +1181,10 @@ static int yaffs_readdir(struct file *f,
+ f->f_version = inode->i_version;
+ }
+
+- list_for_each(i, &obj->variant.directoryVariant.children) {
++ ylist_for_each(i, &obj->variant.directoryVariant.children) {
+ curoffs++;
+ if (curoffs >= offset) {
+- l = list_entry(i, yaffs_Object, siblings);
++ l = ylist_entry(i, yaffs_Object, siblings);
+
+ yaffs_GetObjectName(l, name,
+ YAFFS_MAX_NAME_LENGTH + 1);
+@@ -1269,7 +1485,7 @@ static int yaffs_rename(struct inode *ol
+
+ if (target &&
+ target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+- !list_empty(&target->variant.directoryVariant.children)) {
++ !ylist_empty(&target->variant.directoryVariant.children)) {
+
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n"));
+
+@@ -1350,25 +1566,47 @@ static int yaffs_statfs(struct super_blo
+ buf->f_type = YAFFS_MAGIC;
+ buf->f_bsize = sb->s_blocksize;
+ buf->f_namelen = 255;
+- if (sb->s_blocksize > dev->nDataBytesPerChunk) {
+-
++
++ if(dev->nDataBytesPerChunk & (dev->nDataBytesPerChunk - 1)){
++ /* Do this if chunk size is not a power of 2 */
++
++ uint64_t bytesInDev;
++ uint64_t bytesFree;
++
++ bytesInDev = ((uint64_t)((dev->endBlock - dev->startBlock +1))) *
++ ((uint64_t)(dev->nChunksPerBlock * dev->nDataBytesPerChunk));
++
++ do_div(bytesInDev,sb->s_blocksize); /* bytesInDev becomes the number of blocks */
++ buf->f_blocks = bytesInDev;
++
++ bytesFree = ((uint64_t)(yaffs_GetNumberOfFreeChunks(dev))) *
++ ((uint64_t)(dev->nDataBytesPerChunk));
++
++ do_div(bytesFree,sb->s_blocksize);
++
++ buf->f_bfree = bytesFree;
++
++ } else if (sb->s_blocksize > dev->nDataBytesPerChunk) {
++
+ buf->f_blocks =
+- (dev->endBlock - dev->startBlock +
+- 1) * dev->nChunksPerBlock / (sb->s_blocksize /
+- dev->nDataBytesPerChunk);
+- buf->f_bfree =
+- yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
+- dev->nDataBytesPerChunk);
++ (dev->endBlock - dev->startBlock + 1) *
++ dev->nChunksPerBlock /
++ (sb->s_blocksize / dev->nDataBytesPerChunk);
++ buf->f_bfree =
++ yaffs_GetNumberOfFreeChunks(dev) /
++ (sb->s_blocksize / dev->nDataBytesPerChunk);
+ } else {
+-
+- buf->f_blocks =
+- (dev->endBlock - dev->startBlock +
+- 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
+- sb->s_blocksize);
+- buf->f_bfree =
+- yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
+- sb->s_blocksize);
++ buf->f_blocks =
++ (dev->endBlock - dev->startBlock + 1) *
++ dev->nChunksPerBlock *
++ (dev->nDataBytesPerChunk / sb->s_blocksize);
++
++ buf->f_bfree =
++ yaffs_GetNumberOfFreeChunks(dev) *
++ (dev->nDataBytesPerChunk / sb->s_blocksize);
+ }
++
++
+ buf->f_files = 0;
+ buf->f_ffree = 0;
+ buf->f_bavail = buf->f_bfree;
+@@ -1378,7 +1616,6 @@ static int yaffs_statfs(struct super_blo
+ }
+
+
+-/**
+ static int yaffs_do_sync_fs(struct super_block *sb)
+ {
+
+@@ -1388,8 +1625,10 @@ static int yaffs_do_sync_fs(struct super
+ if(sb->s_dirt) {
+ yaffs_GrossLock(dev);
+
+- if(dev)
++ if(dev){
++ yaffs_FlushEntireDeviceCache(dev);
+ yaffs_CheckpointSave(dev);
++ }
+
+ yaffs_GrossUnlock(dev);
+
+@@ -1397,7 +1636,7 @@ static int yaffs_do_sync_fs(struct super
+ }
+ return 0;
+ }
+-**/
++
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+ static void yaffs_write_super(struct super_block *sb)
+@@ -1407,8 +1646,10 @@ static int yaffs_write_super(struct supe
+ {
+
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n"));
++ if (yaffs_auto_checkpoint >= 2)
++ yaffs_do_sync_fs(sb);
+ #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
+- return 0; /* yaffs_do_sync_fs(sb);*/
++ return 0;
+ #endif
+ }
+
+@@ -1422,10 +1663,48 @@ static int yaffs_sync_fs(struct super_bl
+
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n"));
+
+- return 0; /* yaffs_do_sync_fs(sb);*/
++ if (yaffs_auto_checkpoint >= 1)
++ yaffs_do_sync_fs(sb);
++
++ return 0;
+
+ }
+
++#ifdef YAFFS_USE_OWN_IGET
++
++static struct inode * yaffs_iget(struct super_block *sb, unsigned long ino)
++{
++ struct inode *inode;
++ yaffs_Object *obj;
++ yaffs_Device *dev = yaffs_SuperToDevice(sb);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_iget for %lu\n", ino));
++
++ inode = iget_locked(sb, ino);
++ if (!inode)
++ return ERR_PTR(-ENOMEM);
++ if (!(inode->i_state & I_NEW))
++ return inode;
++
++ /* NB This is called as a side effect of other functions, but
++ * we had to release the lock to prevent deadlocks, so
++ * need to lock again.
++ */
++
++ yaffs_GrossLock(dev);
++
++ obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
++
++ yaffs_FillInodeFromObject(inode, obj);
++
++ yaffs_GrossUnlock(dev);
++
++ unlock_new_inode(inode);
++ return inode;
++}
++
++#else
+
+ static void yaffs_read_inode(struct inode *inode)
+ {
+@@ -1449,7 +1728,9 @@ static void yaffs_read_inode(struct inod
+ yaffs_GrossUnlock(dev);
+ }
+
+-static LIST_HEAD(yaffs_dev_list);
++#endif
++
++static YLIST_HEAD(yaffs_dev_list);
+
+ #if 0 // not used
+ static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
+@@ -1503,7 +1784,7 @@ static void yaffs_put_super(struct super
+ yaffs_GrossUnlock(dev);
+
+ /* we assume this is protected by lock_kernel() in mount/umount */
+- list_del(&dev->devList);
++ ylist_del(&dev->devList);
+
+ if(dev->spareBuffer){
+ YFREE(dev->spareBuffer);
+@@ -1532,8 +1813,8 @@ static void yaffs_MarkSuperBlockDirty(vo
+ struct super_block *sb = (struct super_block *)vsb;
+
+ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb));
+-// if(sb)
+-// sb->s_dirt = 1;
++ if(sb)
++ sb->s_dirt = 1;
+ }
+
+ typedef struct {
+@@ -1602,6 +1883,7 @@ static struct super_block *yaffs_interna
+
+ sb->s_magic = YAFFS_MAGIC;
+ sb->s_op = &yaffs_super_ops;
++ sb->s_flags |= MS_NOATIME;
+
+ if (!sb)
+ printk(KERN_INFO "yaffs: sb is NULL\n");
+@@ -1678,22 +1960,15 @@ static struct super_block *yaffs_interna
+ #ifdef CONFIG_YAFFS_AUTO_YAFFS2
+
+ if (yaffsVersion == 1 &&
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+- mtd->writesize >= 2048) {
+-#else
+- mtd->oobblock >= 2048) {
+-#endif
++ WRITE_SIZE(mtd) >= 2048) {
+ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n"));
+ yaffsVersion = 2;
+ }
+
+ /* Added NCB 26/5/2006 for completeness */
+- if (yaffsVersion == 2 &&
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+- mtd->writesize == 512) {
+-#else
+- mtd->oobblock == 512) {
+-#endif
++ if (yaffsVersion == 2 &&
++ !options.inband_tags &&
++ WRITE_SIZE(mtd) == 512){
+ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
+ yaffsVersion = 1;
+ }
+@@ -1719,12 +1994,9 @@ static struct super_block *yaffs_interna
+ return NULL;
+ }
+
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+- if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+-#else
+- if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
+-#endif
+- mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) {
++ if ((WRITE_SIZE(mtd) < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
++ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) &&
++ !options.inband_tags) {
+ T(YAFFS_TRACE_ALWAYS,
+ ("yaffs: MTD device does not have the "
+ "right page sizes\n"));
+@@ -1784,9 +2056,10 @@ static struct super_block *yaffs_interna
+ dev->startBlock = 0;
+ dev->endBlock = nBlocks - 1;
+ dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
+- dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
++ dev->totalBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
+ dev->nReservedBlocks = 5;
+ dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
++ dev->inbandTags = options.inband_tags;
+
+ /* ... and the functions. */
+ if (yaffsVersion == 2) {
+@@ -1799,15 +2072,14 @@ static struct super_block *yaffs_interna
+ dev->spareBuffer = YMALLOC(mtd->oobsize);
+ dev->isYaffs2 = 1;
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+- dev->nDataBytesPerChunk = mtd->writesize;
++ dev->totalBytesPerChunk = mtd->writesize;
+ dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
+ #else
+- dev->nDataBytesPerChunk = mtd->oobblock;
++ dev->totalBytesPerChunk = mtd->oobblock;
+ dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
+ #endif
+ nBlocks = mtd->size / mtd->erasesize;
+
+- dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
+ dev->startBlock = 0;
+ dev->endBlock = nBlocks - 1;
+ } else {
+@@ -1847,7 +2119,7 @@ static struct super_block *yaffs_interna
+ dev->skipCheckpointWrite = options.skip_checkpoint_write;
+
+ /* we assume this is protected by lock_kernel() in mount/umount */
+- list_add_tail(&dev->devList, &yaffs_dev_list);
++ ylist_add_tail(&dev->devList, &yaffs_dev_list);
+
+ init_MUTEX(&dev->grossLock);
+
+@@ -1884,6 +2156,9 @@ static struct super_block *yaffs_interna
+ return NULL;
+ }
+ sb->s_root = root;
++ sb->s_dirt = !dev->isCheckpointed;
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs_read_super: isCheckpointed %d\n", dev->isCheckpointed));
+
+ T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n"));
+ return sb;
+@@ -1990,12 +2265,12 @@ static char *yaffs_dump_dev(char *buf, y
+ {
+ buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
+ buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
++ buf += sprintf(buf, "totalBytesPerChunk. %d\n", dev->totalBytesPerChunk);
+ buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
+ buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
+ buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize);
+ buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks);
+ buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks);
+- buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks);
+ buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
+ buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
+ buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
+@@ -2006,10 +2281,8 @@ static char *yaffs_dump_dev(char *buf, y
+ buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
+ buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
+ buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
+- buf +=
+- sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
+- buf +=
+- sprintf(buf, "passiveGCs......... %d\n",
++ buf += sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
++ buf += sprintf(buf, "passiveGCs......... %d\n",
+ dev->passiveGarbageCollections);
+ buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
+ buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
+@@ -2025,6 +2298,7 @@ static char *yaffs_dump_dev(char *buf, y
+ sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
+ buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
+ buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
++ buf += sprintf(buf, "inbandTags......... %d\n", dev->inbandTags);
+
+ return buf;
+ }
+@@ -2033,7 +2307,7 @@ static int yaffs_proc_read(char *page,
+ char **start,
+ off_t offset, int count, int *eof, void *data)
+ {
+- struct list_head *item;
++ struct ylist_head *item;
+ char *buf = page;
+ int step = offset;
+ int n = 0;
+@@ -2057,8 +2331,8 @@ static int yaffs_proc_read(char *page,
+ lock_kernel();
+
+ /* Locate and print the Nth entry. Order N-squared but N is small. */
+- list_for_each(item, &yaffs_dev_list) {
+- yaffs_Device *dev = list_entry(item, yaffs_Device, devList);
++ ylist_for_each(item, &yaffs_dev_list) {
++ yaffs_Device *dev = ylist_entry(item, yaffs_Device, devList);
+ if (n < step) {
+ n++;
+ continue;
+@@ -2231,7 +2505,7 @@ static int __init init_yaffs_fs(void)
+ /* Install the proc_fs entry */
+ my_proc_entry = create_proc_entry("yaffs",
+ S_IRUGO | S_IFREG,
+- &proc_root);
++ YPROC_ROOT);
+
+ if (my_proc_entry) {
+ my_proc_entry->write_proc = yaffs_proc_write;
+@@ -2277,7 +2551,7 @@ static void __exit exit_yaffs_fs(void)
+ T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
+ " removing. \n"));
+
+- remove_proc_entry("yaffs", &proc_root);
++ remove_proc_entry("yaffs", YPROC_ROOT);
+
+ fsinst = fs_to_install;
+
+--- /dev/null
++++ b/fs/yaffs2/yaffs_getblockinfo.h
+@@ -0,0 +1,34 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_GETBLOCKINFO_H__
++#define __YAFFS_GETBLOCKINFO_H__
++
++#include "yaffs_guts.h"
++
++/* Function to manipulate block info */
++static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
++{
++ if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
++ blk));
++ YBUG();
++ }
++ return &dev->blockInfo[blk - dev->internalStartBlock];
++}
++
++#endif
+--- a/fs/yaffs2/yaffs_nand.c
++++ b/fs/yaffs2/yaffs_nand.c
+@@ -12,12 +12,13 @@
+ */
+
+ const char *yaffs_nand_c_version =
+- "$Id: yaffs_nand.c,v 1.7 2007-02-14 01:09:06 wookey Exp $";
++ "$Id: yaffs_nand.c,v 1.9 2008-05-05 07:58:58 charles Exp $";
+
+ #include "yaffs_nand.h"
+ #include "yaffs_tagscompat.h"
+ #include "yaffs_tagsvalidity.h"
+
++#include "yaffs_getblockinfo.h"
+
+ int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
+ __u8 * buffer,
+@@ -98,7 +99,7 @@ int yaffs_MarkBlockBad(yaffs_Device * de
+ int yaffs_QueryInitialBlockState(yaffs_Device * dev,
+ int blockNo,
+ yaffs_BlockState * state,
+- unsigned *sequenceNumber)
++ __u32 *sequenceNumber)
+ {
+ blockNo -= dev->blockOffset;
+
+--- a/fs/yaffs2/yaffs_guts.c
++++ b/fs/yaffs2/yaffs_guts.c
+@@ -11,14 +11,16 @@
+ * published by the Free Software Foundation.
+ */
+
++
+ const char *yaffs_guts_c_version =
+- "$Id: yaffs_guts.c,v 1.49 2007-05-15 20:07:40 charles Exp $";
++ "$Id: yaffs_guts.c,v 1.76 2009-01-23 06:36:49 charles Exp $";
+
+ #include "yportenv.h"
+
+ #include "yaffsinterface.h"
+ #include "yaffs_guts.h"
+ #include "yaffs_tagsvalidity.h"
++#include "yaffs_getblockinfo.h"
+
+ #include "yaffs_tagscompat.h"
+ #ifndef CONFIG_YAFFS_USE_OWN_SORT
+@@ -32,11 +34,6 @@ const char *yaffs_guts_c_version =
+ #include "yaffs_packedtags2.h"
+
+
+-#ifdef CONFIG_YAFFS_WINCE
+-void yfsd_LockYAFFS(BOOL fsLockOnly);
+-void yfsd_UnlockYAFFS(BOOL fsLockOnly);
+-#endif
+-
+ #define YAFFS_PASSIVE_GC_CHUNKS 2
+
+ #include "yaffs_ecc.h"
+@@ -78,9 +75,6 @@ static int yaffs_DoGenericObjectDeletion
+
+ static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blockNo);
+
+-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo);
+-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
+- int lineNo);
+
+ static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
+ int chunkInNAND);
+@@ -99,6 +93,7 @@ static void yaffs_VerifyFreeChunks(yaffs
+
+ static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
+
++static void yaffs_VerifyDirectory(yaffs_Object *directory);
+ #ifdef YAFFS_PARANOID
+ static int yaffs_CheckFileSanity(yaffs_Object * in);
+ #else
+@@ -121,95 +116,109 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
+
+ /* Function to calculate chunk and offset */
+
+-static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset)
++static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, int *chunkOut, __u32 *offsetOut)
+ {
+- if(dev->chunkShift){
+- /* Easy-peasy power of 2 case */
+- *chunk = (__u32)(addr >> dev->chunkShift);
+- *offset = (__u32)(addr & dev->chunkMask);
+- }
+- else if(dev->crumbsPerChunk)
++ int chunk;
++ __u32 offset;
++
++ chunk = (__u32)(addr >> dev->chunkShift);
++
++ if(dev->chunkDiv == 1)
+ {
+- /* Case where we're using "crumbs" */
+- *offset = (__u32)(addr & dev->crumbMask);
+- addr >>= dev->crumbShift;
+- *chunk = ((__u32)addr)/dev->crumbsPerChunk;
+- *offset += ((addr - (*chunk * dev->crumbsPerChunk)) << dev->crumbShift);
++ /* easy power of 2 case */
++ offset = (__u32)(addr & dev->chunkMask);
+ }
+ else
+- YBUG();
++ {
++ /* Non power-of-2 case */
++
++ loff_t chunkBase;
++
++ chunk /= dev->chunkDiv;
++
++ chunkBase = ((loff_t)chunk) * dev->nDataBytesPerChunk;
++ offset = (__u32)(addr - chunkBase);
++ }
++
++ *chunkOut = chunk;
++ *offsetOut = offset;
+ }
+
+-/* Function to return the number of shifts for a power of 2 greater than or equal
++/* Function to return the number of shifts for a power of 2 greater than or equal
+ * to the given number
+ * Note we don't try to cater for all possible numbers and this does not have to
+ * be hellishly efficient.
+ */
+-
++
+ static __u32 ShiftsGE(__u32 x)
+ {
+ int extraBits;
+ int nShifts;
+-
++
+ nShifts = extraBits = 0;
+-
++
+ while(x>1){
+ if(x & 1) extraBits++;
+ x>>=1;
+ nShifts++;
+ }
+
+- if(extraBits)
++ if(extraBits)
+ nShifts++;
+-
++
+ return nShifts;
+ }
+
+ /* Function to return the number of shifts to get a 1 in bit 0
+ */
+-
+-static __u32 ShiftDiv(__u32 x)
++
++static __u32 Shifts(__u32 x)
+ {
+ int nShifts;
+-
++
+ nShifts = 0;
+-
++
+ if(!x) return 0;
+-
++
+ while( !(x&1)){
+ x>>=1;
+ nShifts++;
+ }
+-
++
+ return nShifts;
+ }
+
+
+
+-/*
++/*
+ * Temporary buffer manipulations.
+ */
+
+-static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
++static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
+ {
+ int i;
+ __u8 *buf = (__u8 *)1;
+-
++
+ memset(dev->tempBuffer,0,sizeof(dev->tempBuffer));
+-
++
+ for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
+ dev->tempBuffer[i].line = 0; /* not in use */
+ dev->tempBuffer[i].buffer = buf =
+- YMALLOC_DMA(dev->nDataBytesPerChunk);
++ YMALLOC_DMA(dev->totalBytesPerChunk);
+ }
+-
++
+ return buf ? YAFFS_OK : YAFFS_FAIL;
+-
++
+ }
+
+-static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
++__u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
+ {
+ int i, j;
++
++ dev->tempInUse++;
++ if(dev->tempInUse > dev->maxTemp)
++ dev->maxTemp = dev->tempInUse;
++
+ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+ if (dev->tempBuffer[i].line == 0) {
+ dev->tempBuffer[i].line = lineNo;
+@@ -242,10 +251,13 @@ static __u8 *yaffs_GetTempBuffer(yaffs_D
+
+ }
+
+-static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
++void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
+ int lineNo)
+ {
+ int i;
++
++ dev->tempInUse--;
++
+ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
+ if (dev->tempBuffer[i].buffer == buffer) {
+ dev->tempBuffer[i].line = 0;
+@@ -337,7 +349,7 @@ static Y_INLINE void yaffs_ClearChunkBit
+ static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
+ {
+ __u8 *blkBits = yaffs_BlockBits(dev, blk);
+-
++
+ yaffs_VerifyChunkBitId(dev,blk,chunk);
+
+ blkBits[chunk / 8] |= (1 << (chunk & 7));
+@@ -375,16 +387,16 @@ static int yaffs_CountChunkBits(yaffs_De
+ n++;
+ x >>=1;
+ }
+-
++
+ blkBits++;
+ }
+ return n;
+ }
+
+-/*
++/*
+ * Verification code
+ */
+-
++
+ static int yaffs_SkipVerification(yaffs_Device *dev)
+ {
+ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
+@@ -417,14 +429,14 @@ static void yaffs_VerifyBlock(yaffs_Devi
+ {
+ int actuallyUsed;
+ int inUse;
+-
++
+ if(yaffs_SkipVerification(dev))
+ return;
+-
++
+ /* Report illegal runtime states */
+- if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
++ if(bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
+ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState));
+-
++
+ switch(bi->blockState){
+ case YAFFS_BLOCK_STATE_UNKNOWN:
+ case YAFFS_BLOCK_STATE_SCANNING:
+@@ -432,43 +444,44 @@ static void yaffs_VerifyBlock(yaffs_Devi
+ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR),
+ n,blockStateName[bi->blockState]));
+ }
+-
++
+ /* Check pages in use and soft deletions are legal */
+-
++
+ actuallyUsed = bi->pagesInUse - bi->softDeletions;
+-
++
+ if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
+ bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
+ actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
+ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
+ n,bi->pagesInUse,bi->softDeletions));
+-
+-
++
++
+ /* Check chunk bitmap legal */
+ inUse = yaffs_CountChunkBits(dev,n);
+ if(inUse != bi->pagesInUse)
+ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
+ n,bi->pagesInUse,inUse));
+-
++
+ /* Check that the sequence number is valid.
+- * Ten million is legal, but is very unlikely
++ * Ten million is legal, but is very unlikely
+ */
+- if(dev->isYaffs2 &&
++ if(dev->isYaffs2 &&
+ (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
+ (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 ))
+ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR),
+ n,bi->sequenceNumber));
+-
++
+ }
+
+ static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
+ {
+ yaffs_VerifyBlock(dev,bi,n);
+-
++
+ /* After collection the block should be in the erased state */
+- /* TODO: This will need to change if we do partial gc */
+-
+- if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){
++ /* This will need to change if we do partial gc */
++
++ if(bi->blockState != YAFFS_BLOCK_STATE_COLLECTING &&
++ bi->blockState != YAFFS_BLOCK_STATE_EMPTY){
+ T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
+ n,bi->blockState));
+ }
+@@ -479,28 +492,28 @@ static void yaffs_VerifyBlocks(yaffs_Dev
+ int i;
+ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
+ int nIllegalBlockStates = 0;
+-
++
+
+ if(yaffs_SkipVerification(dev))
+ return;
+
+ memset(nBlocksPerState,0,sizeof(nBlocksPerState));
+
+-
++
+ for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){
+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
+ yaffs_VerifyBlock(dev,bi,i);
+
+- if(bi->blockState >=0 && bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
++ if(bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
+ nBlocksPerState[bi->blockState]++;
+ else
+ nIllegalBlockStates++;
+-
++
+ }
+-
++
+ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
+ T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR)));
+-
++
+ T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates));
+ if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
+ T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR)));
+@@ -509,17 +522,17 @@ static void yaffs_VerifyBlocks(yaffs_Dev
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("%s %d blocks"TENDSTR),
+ blockStateName[i],nBlocksPerState[i]));
+-
++
+ if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
+ dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
+-
++
+ if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
+ dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
+-
++
+ if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
+@@ -535,16 +548,16 @@ static void yaffs_VerifyBlocks(yaffs_Dev
+ */
+ static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
+ {
+- if(yaffs_SkipVerification(obj->myDev))
++ if(obj && yaffs_SkipVerification(obj->myDev))
+ return;
+-
++
+ if(!(tags && obj && oh)){
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
+ (__u32)tags,(__u32)obj,(__u32)oh));
+ return;
+ }
+-
++
+ if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
+ oh->type > YAFFS_OBJECT_TYPE_MAX)
+ T(YAFFS_TRACE_VERIFY,
+@@ -559,25 +572,25 @@ static void yaffs_VerifyObjectHeader(yaf
+
+ /*
+ * Check that the object's parent ids match if parentCheck requested.
+- *
++ *
+ * Tests do not apply to the root object.
+ */
+-
++
+ if(parentCheck && tags->objectId > 1 && !obj->parent)
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
+ tags->objectId, oh->parentObjectId));
+-
+-
++
++
+ if(parentCheck && obj->parent &&
+- oh->parentObjectId != obj->parent->objectId &&
++ oh->parentObjectId != obj->parent->objectId &&
+ (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
+ obj->parent->objectId != YAFFS_OBJECTID_DELETED))
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
+ tags->objectId, oh->parentObjectId, obj->parent->objectId));
+-
+-
++
++
+ if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d header name is NULL"TENDSTR),
+@@ -597,7 +610,6 @@ static int yaffs_VerifyTnodeWorker(yaffs
+ int i;
+ yaffs_Device *dev = obj->myDev;
+ int ok = 1;
+- int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
+ if (tn) {
+ if (level > 0) {
+@@ -611,15 +623,14 @@ static int yaffs_VerifyTnodeWorker(yaffs
+ }
+ }
+ } else if (level == 0) {
+- int i;
+ yaffs_ExtendedTags tags;
+ __u32 objectId = obj->objectId;
+-
++
+ chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS;
+-
++
+ for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){
+ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+-
++
+ if(theChunk > 0){
+ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
+ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
+@@ -646,18 +657,20 @@ static void yaffs_VerifyFile(yaffs_Objec
+ __u32 lastChunk;
+ __u32 x;
+ __u32 i;
+- int ok;
+ yaffs_Device *dev;
+ yaffs_ExtendedTags tags;
+ yaffs_Tnode *tn;
+ __u32 objectId;
+-
+- if(obj && yaffs_SkipVerification(obj->myDev))
++
++ if(!obj)
+ return;
+
++ if(yaffs_SkipVerification(obj->myDev))
++ return;
++
+ dev = obj->myDev;
+ objectId = obj->objectId;
+-
++
+ /* Check file size is consistent with tnode depth */
+ lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
+ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
+@@ -666,23 +679,23 @@ static void yaffs_VerifyFile(yaffs_Objec
+ x >>= YAFFS_TNODES_INTERNAL_BITS;
+ requiredTallness++;
+ }
+-
++
+ actualTallness = obj->variant.fileVariant.topLevel;
+-
++
+ if(requiredTallness > actualTallness )
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
+ obj->objectId,actualTallness, requiredTallness));
+-
+-
+- /* Check that the chunks in the tnode tree are all correct.
++
++
++ /* Check that the chunks in the tnode tree are all correct.
+ * We do this by scanning through the tnode tree and
+ * checking the tags for every chunk match.
+ */
+
+ if(yaffs_SkipNANDVerification(dev))
+ return;
+-
++
+ for(i = 1; i <= lastChunk; i++){
+ tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i);
+
+@@ -703,18 +716,12 @@ static void yaffs_VerifyFile(yaffs_Objec
+
+ }
+
+-static void yaffs_VerifyDirectory(yaffs_Object *obj)
+-{
+- if(obj && yaffs_SkipVerification(obj->myDev))
+- return;
+-
+-}
+
+ static void yaffs_VerifyHardLink(yaffs_Object *obj)
+ {
+ if(obj && yaffs_SkipVerification(obj->myDev))
+ return;
+-
++
+ /* Verify sane equivalent object */
+ }
+
+@@ -722,7 +729,7 @@ static void yaffs_VerifySymlink(yaffs_Ob
+ {
+ if(obj && yaffs_SkipVerification(obj->myDev))
+ return;
+-
++
+ /* Verify symlink string */
+ }
+
+@@ -735,69 +742,77 @@ static void yaffs_VerifySpecial(yaffs_Ob
+ static void yaffs_VerifyObject(yaffs_Object *obj)
+ {
+ yaffs_Device *dev;
+-
++
+ __u32 chunkMin;
+ __u32 chunkMax;
+-
++
+ __u32 chunkIdOk;
+- __u32 chunkIsLive;
+-
++ __u32 chunkInRange;
++ __u32 chunkShouldNotBeDeleted;
++ __u32 chunkValid;
++
+ if(!obj)
+ return;
+-
++
++ if(obj->beingCreated)
++ return;
++
+ dev = obj->myDev;
+-
++
+ if(yaffs_SkipVerification(dev))
+ return;
+-
++
+ /* Check sane object header chunk */
+
+ chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
+ chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
+
+- chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax);
+- chunkIsLive = chunkIdOk &&
++ chunkInRange = (((unsigned)(obj->hdrChunk)) >= chunkMin && ((unsigned)(obj->hdrChunk)) <= chunkMax);
++ chunkIdOk = chunkInRange || obj->hdrChunk == 0;
++ chunkValid = chunkInRange &&
+ yaffs_CheckChunkBit(dev,
+- obj->chunkId / dev->nChunksPerBlock,
+- obj->chunkId % dev->nChunksPerBlock);
++ obj->hdrChunk / dev->nChunksPerBlock,
++ obj->hdrChunk % dev->nChunksPerBlock);
++ chunkShouldNotBeDeleted = chunkInRange && !chunkValid;
++
+ if(!obj->fake &&
+- (!chunkIdOk || !chunkIsLive)) {
++ (!chunkIdOk || chunkShouldNotBeDeleted)) {
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
+- obj->objectId,obj->chunkId,
++ obj->objectId,obj->hdrChunk,
+ chunkIdOk ? "" : ",out of range",
+- chunkIsLive || !chunkIdOk ? "" : ",marked as deleted"));
++ chunkShouldNotBeDeleted ? ",marked as deleted" : ""));
+ }
+-
+- if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) {
++
++ if(chunkValid &&!yaffs_SkipNANDVerification(dev)) {
+ yaffs_ExtendedTags tags;
+ yaffs_ObjectHeader *oh;
+ __u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__);
+-
++
+ oh = (yaffs_ObjectHeader *)buffer;
+
+- yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags);
++ yaffs_ReadChunkWithTagsFromNAND(dev, obj->hdrChunk,buffer, &tags);
+
+ yaffs_VerifyObjectHeader(obj,oh,&tags,1);
+-
++
+ yaffs_ReleaseTempBuffer(dev,buffer,__LINE__);
+ }
+-
++
+ /* Verify it has a parent */
+ if(obj && !obj->fake &&
+ (!obj->parent || obj->parent->myDev != dev)){
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
+- obj->objectId,obj->parent));
++ obj->objectId,obj->parent));
+ }
+-
++
+ /* Verify parent is a directory */
+ if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
+- obj->objectId,obj->parent->variantType));
++ obj->objectId,obj->parent->variantType));
+ }
+-
++
+ switch(obj->variantType){
+ case YAFFS_OBJECT_TYPE_FILE:
+ yaffs_VerifyFile(obj);
+@@ -818,31 +833,31 @@ static void yaffs_VerifyObject(yaffs_Obj
+ default:
+ T(YAFFS_TRACE_VERIFY,
+ (TSTR("Obj %d has illegaltype %d"TENDSTR),
+- obj->objectId,obj->variantType));
++ obj->objectId,obj->variantType));
+ break;
+ }
+-
+-
++
++
+ }
+
+ static void yaffs_VerifyObjects(yaffs_Device *dev)
+ {
+- yaffs_Object *obj;
+- int i;
+- struct list_head *lh;
+-
+- if(yaffs_SkipVerification(dev))
+- return;
+-
+- /* Iterate through the objects in each hash entry */
+-
+- for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){
+- list_for_each(lh, &dev->objectBucket[i].list) {
+- if (lh) {
+- obj = list_entry(lh, yaffs_Object, hashLink);
+- yaffs_VerifyObject(obj);
+- }
+- }
++ yaffs_Object *obj;
++ int i;
++ struct ylist_head *lh;
++
++ if(yaffs_SkipVerification(dev))
++ return;
++
++ /* Iterate through the objects in each hash entry */
++
++ for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){
++ ylist_for_each(lh, &dev->objectBucket[i].list) {
++ if (lh) {
++ obj = ylist_entry(lh, yaffs_Object, hashLink);
++ yaffs_VerifyObject(obj);
++ }
++ }
+ }
+
+ }
+@@ -851,7 +866,7 @@ static void yaffs_VerifyObjects(yaffs_De
+ /*
+ * Simple hash function. Needs to have a reasonable spread
+ */
+-
++
+ static Y_INLINE int yaffs_HashFunction(int n)
+ {
+ n = abs(n);
+@@ -859,9 +874,10 @@ static Y_INLINE int yaffs_HashFunction(i
+ }
+
+ /*
+- * Access functions to useful fake objects
++ * Access functions to useful fake objects.
++ * Note that root might have a presence in NAND if permissions are set.
+ */
+-
++
+ yaffs_Object *yaffs_Root(yaffs_Device * dev)
+ {
+ return dev->rootDir;
+@@ -876,7 +892,7 @@ yaffs_Object *yaffs_LostNFound(yaffs_Dev
+ /*
+ * Erased NAND checking functions
+ */
+-
++
+ int yaffs_CheckFF(__u8 * buffer, int nBytes)
+ {
+ /* Horrible, slow implementation */
+@@ -898,10 +914,10 @@ static int yaffs_CheckChunkErased(struct
+ int result;
+
+ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
+-
++
+ if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
+ retval = YAFFS_FAIL;
+-
++
+
+ if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
+ T(YAFFS_TRACE_NANDACCESS,
+@@ -915,7 +931,6 @@ static int yaffs_CheckChunkErased(struct
+
+ }
+
+-
+ static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+ const __u8 * data,
+ yaffs_ExtendedTags * tags,
+@@ -992,7 +1007,11 @@ static int yaffs_WriteNewChunkWithTagsTo
+ /* Copy the data into the robustification buffer */
+ yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
+
+- } while (writeOk != YAFFS_OK && attempts < yaffs_wr_attempts);
++ } while (writeOk != YAFFS_OK &&
++ (yaffs_wr_attempts <= 0 || attempts <= yaffs_wr_attempts));
++
++ if(!writeOk)
++ chunk = -1;
+
+ if (attempts > 1) {
+ T(YAFFS_TRACE_ERROR,
+@@ -1008,13 +1027,13 @@ static int yaffs_WriteNewChunkWithTagsTo
+ /*
+ * Block retiring for handling a broken block.
+ */
+-
++
+ static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND)
+ {
+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
+
+ yaffs_InvalidateCheckpoint(dev);
+-
++
+ yaffs_MarkBlockBad(dev, blockInNAND);
+
+ bi->blockState = YAFFS_BLOCK_STATE_DEAD;
+@@ -1028,7 +1047,7 @@ static void yaffs_RetireBlock(yaffs_Devi
+ * Functions for robustisizing TODO
+ *
+ */
+-
++
+ static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
+ const __u8 * data,
+ const yaffs_ExtendedTags * tags)
+@@ -1046,13 +1065,13 @@ void yaffs_HandleChunkError(yaffs_Device
+ bi->gcPrioritise = 1;
+ dev->hasPendingPrioritisedGCs = 1;
+ bi->chunkErrorStrikes ++;
+-
++
+ if(bi->chunkErrorStrikes > 3){
+ bi->needsRetiring = 1; /* Too many stikes, so retire this */
+ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
+
+ }
+-
++
+ }
+ }
+
+@@ -1063,30 +1082,30 @@ static void yaffs_HandleWriteChunkError(
+ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
+
+ yaffs_HandleChunkError(dev,bi);
+-
+-
++
++
+ if(erasedOk ) {
+ /* Was an actual write failure, so mark the block for retirement */
+ bi->needsRetiring = 1;
+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
+
+-
++
+ }
+-
++
+ /* Delete the chunk */
+ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
+ }
+
+
+-/*---------------- Name handling functions ------------*/
++/*---------------- Name handling functions ------------*/
+
+ static __u16 yaffs_CalcNameSum(const YCHAR * name)
+ {
+ __u16 sum = 0;
+ __u16 i = 1;
+
+- YUCHAR *bname = (YUCHAR *) name;
++ const YUCHAR *bname = (const YUCHAR *) name;
+ if (bname) {
+ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
+
+@@ -1099,12 +1118,14 @@ static __u16 yaffs_CalcNameSum(const YCH
+ bname++;
+ }
+ }
++
+ return sum;
+ }
+
+ static void yaffs_SetObjectName(yaffs_Object * obj, const YCHAR * name)
+ {
+ #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
++ memset(obj->shortName,0,sizeof (YCHAR) * (YAFFS_SHORT_NAME_LENGTH+1));
+ if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) {
+ yaffs_strcpy(obj->shortName, name);
+ } else {
+@@ -1120,7 +1141,7 @@ static void yaffs_SetObjectName(yaffs_Ob
+ * The list is hooked together using the first pointer
+ * in the tnode.
+ */
+-
++
+ /* yaffs_CreateTnodes creates a bunch more tnodes and
+ * adds them to the tnode free list.
+ * Don't use this function directly
+@@ -1138,11 +1159,15 @@ static int yaffs_CreateTnodes(yaffs_Devi
+
+ if (nTnodes < 1)
+ return YAFFS_OK;
+-
++
+ /* Calculate the tnode size in bytes for variable width tnode support.
+ * Must be a multiple of 32-bits */
+ tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
++ if(tnodeSize < sizeof(yaffs_Tnode))
++ tnodeSize = sizeof(yaffs_Tnode);
++
++
+ /* make these things */
+
+ newTnodes = YMALLOC(nTnodes * tnodeSize);
+@@ -1175,7 +1200,7 @@ static int yaffs_CreateTnodes(yaffs_Devi
+ next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
+ curr->internal[0] = next;
+ }
+-
++
+ curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
+ curr->internal[0] = dev->freeTnodes;
+ dev->freeTnodes = (yaffs_Tnode *)mem;
+@@ -1190,7 +1215,7 @@ static int yaffs_CreateTnodes(yaffs_Devi
+ * NB If we can't add this to the management list it isn't fatal
+ * but it just means we can't free this bunch of tnodes later.
+ */
+-
++
+ tnl = YMALLOC(sizeof(yaffs_TnodeList));
+ if (!tnl) {
+ T(YAFFS_TRACE_ERROR,
+@@ -1233,17 +1258,23 @@ static yaffs_Tnode *yaffs_GetTnodeRaw(ya
+ dev->nFreeTnodes--;
+ }
+
++ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
++
+ return tn;
+ }
+
+ static yaffs_Tnode *yaffs_GetTnode(yaffs_Device * dev)
+ {
+ yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
++ int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
++ if(tnodeSize < sizeof(yaffs_Tnode))
++ tnodeSize = sizeof(yaffs_Tnode);
++
+ if(tn)
+- memset(tn, 0, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++ memset(tn, 0, tnodeSize);
+
+- return tn;
++ return tn;
+ }
+
+ /* FreeTnode frees up a tnode and puts it back on the free list */
+@@ -1262,6 +1293,8 @@ static void yaffs_FreeTnode(yaffs_Device
+ dev->freeTnodes = tn;
+ dev->nFreeTnodes++;
+ }
++ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
++
+ }
+
+ static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
+@@ -1299,19 +1332,19 @@ void yaffs_PutLevel0Tnode(yaffs_Device *
+ __u32 bitInWord;
+ __u32 wordInMap;
+ __u32 mask;
+-
++
+ pos &= YAFFS_TNODES_LEVEL0_MASK;
+ val >>= dev->chunkGroupBits;
+-
++
+ bitInMap = pos * dev->tnodeWidth;
+ wordInMap = bitInMap /32;
+ bitInWord = bitInMap & (32 -1);
+-
++
+ mask = dev->tnodeMask << bitInWord;
+-
++
+ map[wordInMap] &= ~mask;
+ map[wordInMap] |= (mask & (val << bitInWord));
+-
++
+ if(dev->tnodeWidth > (32-bitInWord)) {
+ bitInWord = (32 - bitInWord);
+ wordInMap++;;
+@@ -1328,24 +1361,24 @@ static __u32 yaffs_GetChunkGroupBase(yaf
+ __u32 bitInWord;
+ __u32 wordInMap;
+ __u32 val;
+-
++
+ pos &= YAFFS_TNODES_LEVEL0_MASK;
+-
++
+ bitInMap = pos * dev->tnodeWidth;
+ wordInMap = bitInMap /32;
+ bitInWord = bitInMap & (32 -1);
+-
++
+ val = map[wordInMap] >> bitInWord;
+-
++
+ if(dev->tnodeWidth > (32-bitInWord)) {
+ bitInWord = (32 - bitInWord);
+ wordInMap++;;
+ val |= (map[wordInMap] << bitInWord);
+ }
+-
++
+ val &= dev->tnodeMask;
+ val <<= dev->chunkGroupBits;
+-
++
+ return val;
+ }
+
+@@ -1394,7 +1427,7 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
+ while (level > 0 && tn) {
+ tn = tn->
+ internal[(chunkId >>
+- ( YAFFS_TNODES_LEVEL0_BITS +
++ ( YAFFS_TNODES_LEVEL0_BITS +
+ (level - 1) *
+ YAFFS_TNODES_INTERNAL_BITS)
+ ) &
+@@ -1416,7 +1449,7 @@ static yaffs_Tnode *yaffs_FindLevel0Tnod
+ * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
+ * be plugged into the ttree.
+ */
+-
++
+ static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev,
+ yaffs_FileStructure * fStruct,
+ __u32 chunkId,
+@@ -1453,7 +1486,7 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+ if (requiredTallness > fStruct->topLevel) {
+ /* Not tall enough,gotta make the tree taller */
+ for (i = fStruct->topLevel; i < requiredTallness; i++) {
+-
++
+ tn = yaffs_GetTnode(dev);
+
+ if (tn) {
+@@ -1472,7 +1505,7 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+
+ l = fStruct->topLevel;
+ tn = fStruct->top;
+-
++
+ if(l > 0) {
+ while (l > 0 && tn) {
+ x = (chunkId >>
+@@ -1492,13 +1525,13 @@ static yaffs_Tnode *yaffs_AddOrFindLevel
+ if(tn->internal[x])
+ yaffs_FreeTnode(dev,tn->internal[x]);
+ tn->internal[x] = passedTn;
+-
++
+ } else if(!tn->internal[x]) {
+ /* Don't have one, none passed in */
+ tn->internal[x] = yaffs_GetTnode(dev);
+ }
+ }
+-
++
+ tn = tn->internal[x];
+ l--;
+ }
+@@ -1539,7 +1572,7 @@ static int yaffs_FindChunkInGroup(yaffs_
+
+ /* DeleteWorker scans backwards through the tnode tree and deletes all the
+ * chunks and tnodes in the file
+- * Returns 1 if the tree was deleted.
++ * Returns 1 if the tree was deleted.
+ * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
+ */
+
+@@ -1653,7 +1686,7 @@ static void yaffs_SoftDeleteChunk(yaffs_
+ * of the tnode.
+ * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
+ */
+-
++
+ static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn,
+ __u32 level, int chunkOffset)
+ {
+@@ -1694,7 +1727,7 @@ static int yaffs_SoftDeleteWorker(yaffs_
+ theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
+ if (theChunk) {
+ /* Note this does not find the real chunk, only the chunk group.
+- * We make an assumption that a chunk group is not larger than
++ * We make an assumption that a chunk group is not larger than
+ * a block.
+ */
+ yaffs_SoftDeleteChunk(dev, theChunk);
+@@ -1796,7 +1829,7 @@ static int yaffs_PruneFileStructure(yaff
+ /* Now we have a tree with all the non-zero branches NULL but the height
+ * is the same as it was.
+ * Let's see if we can trim internal tnodes to shorten the tree.
+- * We can do this if only the 0th element in the tnode is in use
++ * We can do this if only the 0th element in the tnode is in use
+ * (ie all the non-zero are NULL)
+ */
+
+@@ -1850,14 +1883,14 @@ static int yaffs_CreateFreeObjects(yaffs
+ (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
+ return YAFFS_FAIL;
+ }
++
++ /* Hook them into the free list */
++ for (i = 0; i < nObjects - 1; i++) {
++ newObjects[i].siblings.next =
++ (struct ylist_head *)(&newObjects[i + 1]);
++ }
+
+- /* Hook them into the free list */
+- for (i = 0; i < nObjects - 1; i++) {
+- newObjects[i].siblings.next =
+- (struct list_head *)(&newObjects[i + 1]);
+- }
+-
+- newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
++ newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
+ dev->freeObjects = newObjects;
+ dev->nFreeObjects += nObjects;
+ dev->nObjectsCreated += nObjects;
+@@ -1877,6 +1910,9 @@ static yaffs_Object *yaffs_AllocateEmpty
+ {
+ yaffs_Object *tn = NULL;
+
++#ifdef VALGRIND_TEST
++ tn = YMALLOC(sizeof(yaffs_Object));
++#else
+ /* If there are none left make more */
+ if (!dev->freeObjects) {
+ yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
+@@ -1887,25 +1923,40 @@ static yaffs_Object *yaffs_AllocateEmpty
+ dev->freeObjects =
+ (yaffs_Object *) (dev->freeObjects->siblings.next);
+ dev->nFreeObjects--;
+-
++ }
++#endif
++ if(tn){
+ /* Now sweeten it up... */
+
+ memset(tn, 0, sizeof(yaffs_Object));
++ tn->beingCreated = 1;
++
+ tn->myDev = dev;
+- tn->chunkId = -1;
++ tn->hdrChunk = 0;
+ tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
+- INIT_LIST_HEAD(&(tn->hardLinks));
+- INIT_LIST_HEAD(&(tn->hashLink));
+- INIT_LIST_HEAD(&tn->siblings);
++ YINIT_LIST_HEAD(&(tn->hardLinks));
++ YINIT_LIST_HEAD(&(tn->hashLink));
++ YINIT_LIST_HEAD(&tn->siblings);
++
++
++ /* Now make the directory sane */
++ if(dev->rootDir){
++ tn->parent = dev->rootDir;
++ ylist_add(&(tn->siblings),&dev->rootDir->variant.directoryVariant.children);
++ }
+
+- /* Add it to the lost and found directory.
+- * NB Can't put root or lostNFound in lostNFound so
++ /* Add it to the lost and found directory.
++ * NB Can't put root or lostNFound in lostNFound so
+ * check if lostNFound exists first
+ */
+ if (dev->lostNFoundDir) {
+ yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
+ }
++
++ tn->beingCreated = 0;
+ }
++
++ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+
+ return tn;
+ }
+@@ -1917,14 +1968,14 @@ static yaffs_Object *yaffs_CreateFakeDir
+ yaffs_Object *obj =
+ yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
+ if (obj) {
+- obj->fake = 1; /* it is fake so it has no NAND presence... */
++ obj->fake = 1; /* it is fake so it might have no NAND presence... */
+ obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */
+ obj->unlinkAllowed = 0; /* ... or unlink it */
+ obj->deleted = 0;
+ obj->unlinked = 0;
+ obj->yst_mode = mode;
+ obj->myDev = dev;
+- obj->chunkId = 0; /* Not a valid chunk. */
++ obj->hdrChunk = 0; /* Not a valid chunk. */
+ }
+
+ return obj;
+@@ -1934,14 +1985,14 @@ static yaffs_Object *yaffs_CreateFakeDir
+ static void yaffs_UnhashObject(yaffs_Object * tn)
+ {
+ int bucket;
+- yaffs_Device *dev = tn->myDev;
++ yaffs_Device *dev = tn->myDev;
+
+- /* If it is still linked into the bucket list, free from the list */
+- if (!list_empty(&tn->hashLink)) {
+- list_del_init(&tn->hashLink);
+- bucket = yaffs_HashFunction(tn->objectId);
+- dev->objectBucket[bucket].count--;
+- }
++ /* If it is still linked into the bucket list, free from the list */
++ if (!ylist_empty(&tn->hashLink)) {
++ ylist_del_init(&tn->hashLink);
++ bucket = yaffs_HashFunction(tn->objectId);
++ dev->objectBucket[bucket].count--;
++ }
+
+ }
+
+@@ -1951,6 +2002,13 @@ static void yaffs_FreeObject(yaffs_Objec
+
+ yaffs_Device *dev = tn->myDev;
+
++
++ if(tn->parent)
++ YBUG();
++ if(!ylist_empty(&tn->siblings))
++ YBUG();
++
++
+ #ifdef __KERNEL__
+ if (tn->myInode) {
+ /* We're still hooked up to a cached inode.
+@@ -1961,12 +2019,18 @@ static void yaffs_FreeObject(yaffs_Objec
+ }
+ #endif
+
+- yaffs_UnhashObject(tn);
++ yaffs_UnhashObject(tn);
++
++#ifdef VALGRIND_TEST
++ YFREE(tn);
++#else
++ /* Link into the free list. */
++ tn->siblings.next = (struct ylist_head *)(dev->freeObjects);
++ dev->freeObjects = tn;
++ dev->nFreeObjects++;
++#endif
++ dev->nCheckpointBlocksRequired = 0; /* force recalculation*/
+
+- /* Link into the free list. */
+- tn->siblings.next = (struct list_head *)(dev->freeObjects);
+- dev->freeObjects = tn;
+- dev->nFreeObjects++;
+ }
+
+ #ifdef __KERNEL__
+@@ -2004,12 +2068,12 @@ static void yaffs_InitialiseObjects(yaff
+
+ dev->allocatedObjectList = NULL;
+ dev->freeObjects = NULL;
+- dev->nFreeObjects = 0;
++ dev->nFreeObjects = 0;
+
+- for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
+- INIT_LIST_HEAD(&dev->objectBucket[i].list);
+- dev->objectBucket[i].count = 0;
+- }
++ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
++ YINIT_LIST_HEAD(&dev->objectBucket[i].list);
++ dev->objectBucket[i].count = 0;
++ }
+
+ }
+
+@@ -2055,26 +2119,26 @@ static int yaffs_CreateNewObjectNumber(y
+
+ /* Now find an object value that has not already been taken
+ * by scanning the list.
+- */
++ */
+
+- int found = 0;
+- struct list_head *i;
++ int found = 0;
++ struct ylist_head *i;
+
+- __u32 n = (__u32) bucket;
++ __u32 n = (__u32) bucket;
+
+ /* yaffs_CheckObjectHashSanity(); */
+
+ while (!found) {
+- found = 1;
+- n += YAFFS_NOBJECT_BUCKETS;
+- if (1 || dev->objectBucket[bucket].count > 0) {
+- list_for_each(i, &dev->objectBucket[bucket].list) {
+- /* If there is already one in the list */
+- if (i
+- && list_entry(i, yaffs_Object,
+- hashLink)->objectId == n) {
+- found = 0;
+- }
++ found = 1;
++ n += YAFFS_NOBJECT_BUCKETS;
++ if (1 || dev->objectBucket[bucket].count > 0) {
++ ylist_for_each(i, &dev->objectBucket[bucket].list) {
++ /* If there is already one in the list */
++ if (i
++ && ylist_entry(i, yaffs_Object,
++ hashLink)->objectId == n) {
++ found = 0;
++ }
+ }
+ }
+ }
+@@ -2085,27 +2149,27 @@ static int yaffs_CreateNewObjectNumber(y
+
+ static void yaffs_HashObject(yaffs_Object * in)
+ {
+- int bucket = yaffs_HashFunction(in->objectId);
+- yaffs_Device *dev = in->myDev;
++ int bucket = yaffs_HashFunction(in->objectId);
++ yaffs_Device *dev = in->myDev;
+
+- list_add(&in->hashLink, &dev->objectBucket[bucket].list);
+- dev->objectBucket[bucket].count++;
++ ylist_add(&in->hashLink, &dev->objectBucket[bucket].list);
++ dev->objectBucket[bucket].count++;
+
+ }
+
+ yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number)
+ {
+- int bucket = yaffs_HashFunction(number);
+- struct list_head *i;
+- yaffs_Object *in;
+-
+- list_for_each(i, &dev->objectBucket[bucket].list) {
+- /* Look if it is in the list */
+- if (i) {
+- in = list_entry(i, yaffs_Object, hashLink);
+- if (in->objectId == number) {
++ int bucket = yaffs_HashFunction(number);
++ struct ylist_head *i;
++ yaffs_Object *in;
++
++ ylist_for_each(i, &dev->objectBucket[bucket].list) {
++ /* Look if it is in the list */
++ if (i) {
++ in = ylist_entry(i, yaffs_Object, hashLink);
++ if (in->objectId == number) {
+ #ifdef __KERNEL__
+- /* Don't tell the VFS about this one if it is defered free */
++ /* Don't tell the VFS about this one if it is defered free */
+ if (in->deferedFree)
+ return NULL;
+ #endif
+@@ -2123,7 +2187,7 @@ yaffs_Object *yaffs_CreateNewObject(yaff
+ {
+
+ yaffs_Object *theObject;
+- yaffs_Tnode *tn;
++ yaffs_Tnode *tn = NULL;
+
+ if (number < 0) {
+ number = yaffs_CreateNewObjectNumber(dev);
+@@ -2132,7 +2196,7 @@ yaffs_Object *yaffs_CreateNewObject(yaff
+ theObject = yaffs_AllocateEmptyObject(dev);
+ if(!theObject)
+ return NULL;
+-
++
+ if(type == YAFFS_OBJECT_TYPE_FILE){
+ tn = yaffs_GetTnode(dev);
+ if(!tn){
+@@ -2140,8 +2204,8 @@ yaffs_Object *yaffs_CreateNewObject(yaff
+ return NULL;
+ }
+ }
+-
+-
++
++
+
+ if (theObject) {
+ theObject->fake = 0;
+@@ -2162,19 +2226,25 @@ yaffs_Object *yaffs_CreateNewObject(yaff
+ theObject->yst_atime = theObject->yst_mtime =
+ theObject->yst_ctime = Y_CURRENT_TIME;
+ #endif
++
++#if 0
++ theObject->sum_prev = 12345;
++ theObject->sum_trailer = 6789;
++#endif
++
+ switch (type) {
+ case YAFFS_OBJECT_TYPE_FILE:
+ theObject->variant.fileVariant.fileSize = 0;
+ theObject->variant.fileVariant.scannedFileSize = 0;
+ theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */
+ theObject->variant.fileVariant.topLevel = 0;
+- theObject->variant.fileVariant.top = tn;
+- break;
+- case YAFFS_OBJECT_TYPE_DIRECTORY:
+- INIT_LIST_HEAD(&theObject->variant.directoryVariant.
+- children);
+- break;
+- case YAFFS_OBJECT_TYPE_SYMLINK:
++ theObject->variant.fileVariant.top = tn;
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ YINIT_LIST_HEAD(&theObject->variant.directoryVariant.
++ children);
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ /* No action required */
+@@ -2205,7 +2275,7 @@ static yaffs_Object *yaffs_FindOrCreateO
+ return theObject;
+
+ }
+-
++
+
+ static YCHAR *yaffs_CloneString(const YCHAR * str)
+ {
+@@ -2227,7 +2297,7 @@ static YCHAR *yaffs_CloneString(const YC
+ * aliasString only has meaning for a sumlink.
+ * rdev only has meaning for devices (a subset of special objects)
+ */
+-
++
+ static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
+ yaffs_Object * parent,
+ const YCHAR * name,
+@@ -2238,7 +2308,7 @@ static yaffs_Object *yaffs_MknodObject(y
+ const YCHAR * aliasString, __u32 rdev)
+ {
+ yaffs_Object *in;
+- YCHAR *str;
++ YCHAR *str = NULL;
+
+ yaffs_Device *dev = parent->myDev;
+
+@@ -2249,6 +2319,9 @@ static yaffs_Object *yaffs_MknodObject(y
+
+ in = yaffs_CreateNewObject(dev, -1, type);
+
++ if(!in)
++ return YAFFS_FAIL;
++
+ if(type == YAFFS_OBJECT_TYPE_SYMLINK){
+ str = yaffs_CloneString(aliasString);
+ if(!str){
+@@ -2256,11 +2329,11 @@ static yaffs_Object *yaffs_MknodObject(y
+ return NULL;
+ }
+ }
+-
+-
++
++
+
+ if (in) {
+- in->chunkId = -1;
++ in->hdrChunk = 0;
+ in->valid = 1;
+ in->variantType = type;
+
+@@ -2293,13 +2366,13 @@ static yaffs_Object *yaffs_MknodObject(y
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ in->variant.hardLinkVariant.equivalentObject =
+- equivalentObject;
+- in->variant.hardLinkVariant.equivalentObjectId =
+- equivalentObject->objectId;
+- list_add(&in->hardLinks, &equivalentObject->hardLinks);
+- break;
+- case YAFFS_OBJECT_TYPE_FILE:
+- case YAFFS_OBJECT_TYPE_DIRECTORY:
++ equivalentObject;
++ in->variant.hardLinkVariant.equivalentObjectId =
++ equivalentObject->objectId;
++ ylist_add(&in->hardLinks, &equivalentObject->hardLinks);
++ break;
++ case YAFFS_OBJECT_TYPE_FILE:
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* do nothing */
+@@ -2378,11 +2451,11 @@ static int yaffs_ChangeObjectName(yaffs_
+ if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR
+- ("tragendy: yaffs_ChangeObjectName: newDir is not a directory"
++ ("tragedy: yaffs_ChangeObjectName: newDir is not a directory"
+ TENDSTR)));
+ YBUG();
+ }
+-
++
+ /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
+ if (obj->myDev->isYaffs2) {
+ unlinkOp = (newDir == obj->myDev->unlinkedDir);
+@@ -2395,9 +2468,9 @@ static int yaffs_ChangeObjectName(yaffs_
+
+ existingTarget = yaffs_FindObjectByName(newDir, newName);
+
+- /* If the object is a file going into the unlinked directory,
++ /* If the object is a file going into the unlinked directory,
+ * then it is OK to just stuff it in since duplicate names are allowed.
+- * else only proceed if the new name does not exist and if we're putting
++ * else only proceed if the new name does not exist and if we're putting
+ * it into a directory.
+ */
+ if ((unlinkOp ||
+@@ -2425,9 +2498,15 @@ static int yaffs_ChangeObjectName(yaffs_
+ int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
+ yaffs_Object * newDir, const YCHAR * newName)
+ {
+- yaffs_Object *obj;
+- yaffs_Object *existingTarget;
++ yaffs_Object *obj=NULL;
++ yaffs_Object *existingTarget=NULL;
+ int force = 0;
++
++
++ if(!oldDir || oldDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
++ YBUG();
++ if(!newDir || newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY)
++ YBUG();
+
+ #ifdef CONFIG_YAFFS_CASE_INSENSITIVE
+ /* Special case for case insemsitive systems (eg. WinCE).
+@@ -2439,29 +2518,24 @@ int yaffs_RenameObject(yaffs_Object * ol
+ }
+ #endif
+
+- obj = yaffs_FindObjectByName(oldDir, oldName);
+- /* Check new name to long. */
+- if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK &&
+- yaffs_strlen(newName) > YAFFS_MAX_ALIAS_LENGTH)
+- /* ENAMETOOLONG */
+- return YAFFS_FAIL;
+- else if (obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK &&
+- yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
++ else if (yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
+ /* ENAMETOOLONG */
+ return YAFFS_FAIL;
+
++ obj = yaffs_FindObjectByName(oldDir, oldName);
++
+ if (obj && obj->renameAllowed) {
+
+ /* Now do the handling for an existing target, if there is one */
+
+- existingTarget = yaffs_FindObjectByName(newDir, newName);
+- if (existingTarget &&
+- existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
+- !list_empty(&existingTarget->variant.directoryVariant.children)) {
+- /* There is a target that is a non-empty directory, so we fail */
+- return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
+- } else if (existingTarget && existingTarget != obj) {
+- /* Nuke the target first, using shadowing,
++ existingTarget = yaffs_FindObjectByName(newDir, newName);
++ if (existingTarget &&
++ existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
++ !ylist_empty(&existingTarget->variant.directoryVariant.children)) {
++ /* There is a target that is a non-empty directory, so we fail */
++ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
++ } else if (existingTarget && existingTarget != obj) {
++ /* Nuke the target first, using shadowing,
+ * but only if it isn't the same object
+ */
+ yaffs_ChangeObjectName(obj, newDir, newName, force,
+@@ -2479,10 +2553,10 @@ int yaffs_RenameObject(yaffs_Object * ol
+ static int yaffs_InitialiseBlocks(yaffs_Device * dev)
+ {
+ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+-
++
+ dev->blockInfo = NULL;
+ dev->chunkBits = NULL;
+-
++
+ dev->allocationBlock = -1; /* force it to get a new one */
+
+ /* If the first allocation strategy fails, thry the alternate one */
+@@ -2493,9 +2567,9 @@ static int yaffs_InitialiseBlocks(yaffs_
+ }
+ else
+ dev->blockInfoAlt = 0;
+-
++
+ if(dev->blockInfo){
+-
++
+ /* Set up dynamic blockinfo stuff. */
+ dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
+ dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
+@@ -2506,7 +2580,7 @@ static int yaffs_InitialiseBlocks(yaffs_
+ else
+ dev->chunkBitsAlt = 0;
+ }
+-
++
+ if (dev->blockInfo && dev->chunkBits) {
+ memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo));
+ memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks);
+@@ -2527,7 +2601,7 @@ static void yaffs_DeinitialiseBlocks(yaf
+ dev->blockInfoAlt = 0;
+
+ dev->blockInfo = NULL;
+-
++
+ if(dev->chunkBitsAlt && dev->chunkBits)
+ YFREE_ALT(dev->chunkBits);
+ else if(dev->chunkBits)
+@@ -2591,14 +2665,14 @@ static int yaffs_FindBlockForGarbageColl
+ int prioritised=0;
+ yaffs_BlockInfo *bi;
+ int pendingPrioritisedExist = 0;
+-
++
+ /* First let's see if we need to grab a prioritised block */
+ if(dev->hasPendingPrioritisedGCs){
+ for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){
+
+ bi = yaffs_GetBlockInfo(dev, i);
+ //yaffs_VerifyBlock(dev,bi,i);
+-
++
+ if(bi->gcPrioritise) {
+ pendingPrioritisedExist = 1;
+ if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+@@ -2610,7 +2684,7 @@ static int yaffs_FindBlockForGarbageColl
+ }
+ }
+ }
+-
++
+ if(!pendingPrioritisedExist) /* None found, so we can clear this */
+ dev->hasPendingPrioritisedGCs = 0;
+ }
+@@ -2662,7 +2736,7 @@ static int yaffs_FindBlockForGarbageColl
+ dirtiest = b;
+ pagesInUse = 0;
+ }
+- else
++ else
+ #endif
+
+ if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
+@@ -2699,11 +2773,11 @@ static void yaffs_BlockBecameDirty(yaffs
+ /* If the block is still healthy erase it and mark as clean.
+ * If the block has had a data failure, then retire it.
+ */
+-
++
+ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
+ (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
+ blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
+-
++
+ bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
+
+ if (!bi->needsRetiring) {
+@@ -2716,7 +2790,7 @@ static void yaffs_BlockBecameDirty(yaffs
+ }
+ }
+
+- if (erasedOk &&
++ if (erasedOk &&
+ ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
+ int i;
+ for (i = 0; i < dev->nChunksPerBlock; i++) {
+@@ -2763,11 +2837,11 @@ static int yaffs_FindBlockForAllocation(
+ * Can't get space to gc
+ */
+ T(YAFFS_TRACE_ERROR,
+- (TSTR("yaffs tragedy: no more eraased blocks" TENDSTR)));
++ (TSTR("yaffs tragedy: no more erased blocks" TENDSTR)));
+
+ return -1;
+ }
+-
++
+ /* Find an empty block. */
+
+ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
+@@ -2794,13 +2868,48 @@ static int yaffs_FindBlockForAllocation(
+
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR
+- ("yaffs tragedy: no more eraased blocks, but there should have been %d"
++ ("yaffs tragedy: no more erased blocks, but there should have been %d"
+ TENDSTR), dev->nErasedBlocks));
+
+ return -1;
+ }
+
+
++
++static int yaffs_CalcCheckpointBlocksRequired(yaffs_Device *dev)
++{
++ if(!dev->nCheckpointBlocksRequired &&
++ dev->isYaffs2){
++ /* Not a valid value so recalculate */
++ int nBytes = 0;
++ int nBlocks;
++ int devBlocks = (dev->endBlock - dev->startBlock + 1);
++ int tnodeSize;
++
++ tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++ if(tnodeSize < sizeof(yaffs_Tnode))
++ tnodeSize = sizeof(yaffs_Tnode);
++
++ nBytes += sizeof(yaffs_CheckpointValidity);
++ nBytes += sizeof(yaffs_CheckpointDevice);
++ nBytes += devBlocks * sizeof(yaffs_BlockInfo);
++ nBytes += devBlocks * dev->chunkBitmapStride;
++ nBytes += (sizeof(yaffs_CheckpointObject) + sizeof(__u32)) * (dev->nObjectsCreated - dev->nFreeObjects);
++ nBytes += (tnodeSize + sizeof(__u32)) * (dev->nTnodesCreated - dev->nFreeTnodes);
++ nBytes += sizeof(yaffs_CheckpointValidity);
++ nBytes += sizeof(__u32); /* checksum*/
++
++ /* Round up and add 2 blocks to allow for some bad blocks, so add 3 */
++
++ nBlocks = (nBytes/(dev->nDataBytesPerChunk * dev->nChunksPerBlock)) + 3;
++
++ dev->nCheckpointBlocksRequired = nBlocks;
++ }
++
++ return dev->nCheckpointBlocksRequired;
++}
++
+ // Check if there's space to allocate...
+ // Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
+ static int yaffs_CheckSpaceForAllocation(yaffs_Device * dev)
+@@ -2808,13 +2917,18 @@ static int yaffs_CheckSpaceForAllocation
+ int reservedChunks;
+ int reservedBlocks = dev->nReservedBlocks;
+ int checkpointBlocks;
+-
+- checkpointBlocks = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
+- if(checkpointBlocks < 0)
+- checkpointBlocks = 0;
+-
++
++ if(dev->isYaffs2){
++ checkpointBlocks = yaffs_CalcCheckpointBlocksRequired(dev) -
++ dev->blocksInCheckpoint;
++ if(checkpointBlocks < 0)
++ checkpointBlocks = 0;
++ } else {
++ checkpointBlocks =0;
++ }
++
+ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
+-
++
+ return (dev->nFreeChunks > reservedChunks);
+ }
+
+@@ -2861,10 +2975,10 @@ static int yaffs_AllocateChunk(yaffs_Dev
+
+ if(blockUsedPtr)
+ *blockUsedPtr = bi;
+-
++
+ return retVal;
+ }
+-
++
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
+
+@@ -2885,17 +2999,17 @@ static int yaffs_GetErasedChunks(yaffs_D
+
+ }
+
+-static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block)
++static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block, int wholeBlock)
+ {
+ int oldChunk;
+ int newChunk;
+- int chunkInBlock;
+ int markNAND;
+ int retVal = YAFFS_OK;
+ int cleanups = 0;
+ int i;
+ int isCheckpointBlock;
+ int matchingChunk;
++ int maxCopies;
+
+ int chunksBefore = yaffs_GetErasedChunks(dev);
+ int chunksAfter;
+@@ -2907,12 +3021,15 @@ static int yaffs_GarbageCollectBlock(yaf
+ yaffs_Object *object;
+
+ isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT);
+-
++
+ bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
+
+ T(YAFFS_TRACE_TRACING,
+- (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block,
+- bi->pagesInUse, bi->hasShrinkHeader));
++ (TSTR("Collecting block %d, in use %d, shrink %d, wholeBlock %d" TENDSTR),
++ block,
++ bi->pagesInUse,
++ bi->hasShrinkHeader,
++ wholeBlock));
+
+ /*yaffs_VerifyFreeChunks(dev); */
+
+@@ -2935,16 +3052,23 @@ static int yaffs_GarbageCollectBlock(yaf
+ } else {
+
+ __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
+-
++
+ yaffs_VerifyBlock(dev,bi,block);
+
+- for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock;
+- chunkInBlock < dev->nChunksPerBlock
+- && yaffs_StillSomeChunkBits(dev, block);
+- chunkInBlock++, oldChunk++) {
+- if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) {
++ maxCopies = (wholeBlock) ? dev->nChunksPerBlock : 10;
++ oldChunk = block * dev->nChunksPerBlock + dev->gcChunk;
++
++ for ( /* init already done */;
++ retVal == YAFFS_OK &&
++ dev->gcChunk < dev->nChunksPerBlock &&
++ (bi->blockState == YAFFS_BLOCK_STATE_COLLECTING)&&
++ maxCopies > 0;
++ dev->gcChunk++, oldChunk++) {
++ if (yaffs_CheckChunkBit(dev, block, dev->gcChunk)) {
+
+ /* This page is in use and might need to be copied off */
++
++ maxCopies--;
+
+ markNAND = 1;
+
+@@ -2959,23 +3083,23 @@ static int yaffs_GarbageCollectBlock(yaf
+
+ T(YAFFS_TRACE_GC_DETAIL,
+ (TSTR
+- ("Collecting page %d, %d %d %d " TENDSTR),
+- chunkInBlock, tags.objectId, tags.chunkId,
++ ("Collecting chunk in block %d, %d %d %d " TENDSTR),
++ dev->gcChunk, tags.objectId, tags.chunkId,
+ tags.byteCount));
+-
++
+ if(object && !yaffs_SkipVerification(dev)){
+ if(tags.chunkId == 0)
+- matchingChunk = object->chunkId;
++ matchingChunk = object->hdrChunk;
+ else if(object->softDeleted)
+ matchingChunk = oldChunk; /* Defeat the test */
+ else
+ matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL);
+-
++
+ if(oldChunk != matchingChunk)
+ T(YAFFS_TRACE_ERROR,
+ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
+ oldChunk,matchingChunk,tags.objectId, tags.chunkId));
+-
++
+ }
+
+ if (!object) {
+@@ -2986,11 +3110,13 @@ static int yaffs_GarbageCollectBlock(yaf
+ tags.objectId, tags.chunkId, tags.byteCount));
+ }
+
+- if (object && object->deleted
+- && tags.chunkId != 0) {
+- /* Data chunk in a deleted file, throw it away
++ if (object &&
++ object->deleted &&
++ object->softDeleted &&
++ tags.chunkId != 0) {
++ /* Data chunk in a soft deleted file, throw it away
+ * It's a soft deleted data chunk,
+- * No need to copy this, just forget about it and
++ * No need to copy this, just forget about it and
+ * fix up the object.
+ */
+
+@@ -3009,7 +3135,7 @@ static int yaffs_GarbageCollectBlock(yaf
+ /* Deleted object header with no data chunks.
+ * Can be discarded and the file deleted.
+ */
+- object->chunkId = 0;
++ object->hdrChunk = 0;
+ yaffs_FreeTnode(object->myDev,
+ object->variant.
+ fileVariant.top);
+@@ -3037,10 +3163,9 @@ static int yaffs_GarbageCollectBlock(yaf
+ yaffs_ObjectHeader *oh;
+ oh = (yaffs_ObjectHeader *)buffer;
+ oh->isShrink = 0;
+- oh->shadowsObject = -1;
+ tags.extraShadows = 0;
+ tags.extraIsShrinkHeader = 0;
+-
++
+ yaffs_VerifyObjectHeader(object,oh,&tags,1);
+ }
+
+@@ -3055,7 +3180,7 @@ static int yaffs_GarbageCollectBlock(yaf
+
+ if (tags.chunkId == 0) {
+ /* It's a header */
+- object->chunkId = newChunk;
++ object->hdrChunk = newChunk;
+ object->serial = tags.serialNumber;
+ } else {
+ /* It's a data chunk */
+@@ -3067,12 +3192,14 @@ static int yaffs_GarbageCollectBlock(yaf
+ }
+ }
+
+- yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
++ if(retVal == YAFFS_OK)
++ yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
+
+ }
+ }
+
+ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
++
+
+
+ /* Do any required cleanups */
+@@ -3099,7 +3226,7 @@ static int yaffs_GarbageCollectBlock(yaf
+ }
+
+ yaffs_VerifyCollectedBlock(dev,bi,block);
+-
++
+ if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
+ T(YAFFS_TRACE_GC,
+ (TSTR
+@@ -3107,9 +3234,15 @@ static int yaffs_GarbageCollectBlock(yaf
+ TENDSTR), chunksBefore, chunksAfter));
+ }
+
++ /* If the gc completed then clear the current gcBlock so that we find another. */
++ if(bi->blockState != YAFFS_BLOCK_STATE_COLLECTING){
++ dev->gcBlock = -1;
++ dev->gcChunk = 0;
++ }
++
+ dev->isDoingGC = 0;
+
+- return YAFFS_OK;
++ return retVal;
+ }
+
+ /* New garbage collector
+@@ -3127,22 +3260,22 @@ static int yaffs_CheckGarbageCollection(
+ int aggressive;
+ int gcOk = YAFFS_OK;
+ int maxTries = 0;
+-
++
+ int checkpointBlockAdjust;
+
+ if (dev->isDoingGC) {
+ /* Bail out so we don't get recursive gc */
+ return YAFFS_OK;
+ }
+-
++
+ /* This loop should pass the first time.
+ * We'll only see looping here if the erase of the collected block fails.
+ */
+
+ do {
+ maxTries++;
+-
+- checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint);
++
++ checkpointBlockAdjust = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+ if(checkpointBlockAdjust < 0)
+ checkpointBlockAdjust = 0;
+
+@@ -3154,7 +3287,12 @@ static int yaffs_CheckGarbageCollection(
+ aggressive = 0;
+ }
+
+- block = yaffs_FindBlockForGarbageCollection(dev, aggressive);
++ if(dev->gcBlock <= 0){
++ dev->gcBlock = yaffs_FindBlockForGarbageCollection(dev, aggressive);
++ dev->gcChunk = 0;
++ }
++
++ block = dev->gcBlock;
+
+ if (block > 0) {
+ dev->garbageCollections++;
+@@ -3167,7 +3305,7 @@ static int yaffs_CheckGarbageCollection(
+ ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
+ dev->nErasedBlocks, aggressive));
+
+- gcOk = yaffs_GarbageCollectBlock(dev, block);
++ gcOk = yaffs_GarbageCollectBlock(dev,block,aggressive);
+ }
+
+ if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
+@@ -3176,8 +3314,9 @@ static int yaffs_CheckGarbageCollection(
+ ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
+ TENDSTR), dev->nErasedBlocks, maxTries, block));
+ }
+- } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0)
+- && (maxTries < 2));
++ } while ((dev->nErasedBlocks < dev->nReservedBlocks) &&
++ (block > 0) &&
++ (maxTries < 2));
+
+ return aggressive ? gcOk : YAFFS_OK;
+ }
+@@ -3326,11 +3465,11 @@ static int yaffs_CheckFileSanity(yaffs_O
+ static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
+ int chunkInNAND, int inScan)
+ {
+- /* NB inScan is zero unless scanning.
+- * For forward scanning, inScan is > 0;
++ /* NB inScan is zero unless scanning.
++ * For forward scanning, inScan is > 0;
+ * for backward scanning inScan is < 0
+ */
+-
++
+ yaffs_Tnode *tn;
+ yaffs_Device *dev = in->myDev;
+ int existingChunk;
+@@ -3354,7 +3493,7 @@ static int yaffs_PutChunkIntoFile(yaffs_
+ return YAFFS_OK;
+ }
+
+- tn = yaffs_AddOrFindLevel0Tnode(dev,
++ tn = yaffs_AddOrFindLevel0Tnode(dev,
+ &in->variant.fileVariant,
+ chunkInInode,
+ NULL);
+@@ -3366,7 +3505,7 @@ static int yaffs_PutChunkIntoFile(yaffs_
+
+ if (inScan != 0) {
+ /* If we're scanning then we need to test for duplicates
+- * NB This does not need to be efficient since it should only ever
++ * NB This does not need to be efficient since it should only ever
+ * happen when the power fails during a write, then only one
+ * chunk should ever be affected.
+ *
+@@ -3374,7 +3513,7 @@ static int yaffs_PutChunkIntoFile(yaffs_
+ * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
+ */
+
+- if (existingChunk != 0) {
++ if (existingChunk > 0) {
+ /* NB Right now existing chunk will not be real chunkId if the device >= 32MB
+ * thus we have to do a FindChunkInFile to get the real chunk id.
+ *
+@@ -3407,18 +3546,20 @@ static int yaffs_PutChunkIntoFile(yaffs_
+
+ }
+
+- /* NB The deleted flags should be false, otherwise the chunks will
++ /* NB The deleted flags should be false, otherwise the chunks will
+ * not be loaded during a scan
+ */
+
+- newSerial = newTags.serialNumber;
+- existingSerial = existingTags.serialNumber;
++ if(inScan > 0) {
++ newSerial = newTags.serialNumber;
++ existingSerial = existingTags.serialNumber;
++ }
+
+ if ((inScan > 0) &&
+ (in->myDev->isYaffs2 ||
+ existingChunk <= 0 ||
+ ((existingSerial + 1) & 3) == newSerial)) {
+- /* Forward scanning.
++ /* Forward scanning.
+ * Use new
+ * Delete the old one and drop through to update the tnode
+ */
+@@ -3459,7 +3600,7 @@ static int yaffs_ReadChunkDataFromObject
+ (TSTR("Chunk %d not found zero instead" TENDSTR),
+ chunkInNAND));
+ /* get sane (zero) data if you read a hole */
+- memset(buffer, 0, in->myDev->nDataBytesPerChunk);
++ memset(buffer, 0, in->myDev->nDataBytesPerChunk);
+ return 0;
+ }
+
+@@ -3474,7 +3615,7 @@ void yaffs_DeleteChunk(yaffs_Device * de
+
+ if (chunkId <= 0)
+ return;
+-
++
+
+ dev->nDeletions++;
+ block = chunkId / dev->nChunksPerBlock;
+@@ -3560,6 +3701,14 @@ static int yaffs_WriteChunkDataToObject(
+ newTags.serialNumber =
+ (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
+ newTags.byteCount = nBytes;
++
++ if(nBytes < 1 || nBytes > dev->totalBytesPerChunk){
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("Writing %d bytes to chunk!!!!!!!!!" TENDSTR), nBytes));
++ while(1){}
++ }
++
++
+
+ newChunkId =
+ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
+@@ -3601,11 +3750,14 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+ __u8 *buffer = NULL;
+ YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1];
+
+- yaffs_ObjectHeader *oh = NULL;
++ yaffs_ObjectHeader *oh = NULL;
++
++ yaffs_strcpy(oldName,_Y("silly old name"));
+
+- yaffs_strcpy(oldName,"silly old name");
+
+- if (!in->fake || force) {
++ if (!in->fake ||
++ in == dev->rootDir || /* The rootDir should also be saved */
++ force) {
+
+ yaffs_CheckGarbageCollection(dev);
+ yaffs_CheckObjectDetailsLoaded(in);
+@@ -3613,14 +3765,14 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+ buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
+ oh = (yaffs_ObjectHeader *) buffer;
+
+- prevChunkId = in->chunkId;
++ prevChunkId = in->hdrChunk;
+
+- if (prevChunkId >= 0) {
++ if (prevChunkId > 0) {
+ result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
+ buffer, &oldTags);
+-
++
+ yaffs_VerifyObjectHeader(in,oh,&oldTags,0);
+-
++
+ memcpy(oldName, oh->name, sizeof(oh->name));
+ }
+
+@@ -3628,7 +3780,7 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+
+ oh->type = in->variantType;
+ oh->yst_mode = in->yst_mode;
+- oh->shadowsObject = shadows;
++ oh->shadowsObject = oh->inbandShadowsObject = shadows;
+
+ #ifdef CONFIG_YAFFS_WINCE
+ oh->win_atime[0] = in->win_atime[0];
+@@ -3717,7 +3869,7 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+
+ if (newChunkId >= 0) {
+
+- in->chunkId = newChunkId;
++ in->hdrChunk = newChunkId;
+
+ if (prevChunkId >= 0) {
+ yaffs_DeleteChunk(dev, prevChunkId, 1,
+@@ -3748,11 +3900,11 @@ int yaffs_UpdateObjectHeader(yaffs_Objec
+
+ /*------------------------ Short Operations Cache ----------------------------------------
+ * In many situations where there is no high level buffering (eg WinCE) a lot of
+- * reads might be short sequential reads, and a lot of writes may be short
++ * reads might be short sequential reads, and a lot of writes may be short
+ * sequential writes. eg. scanning/writing a jpeg file.
+- * In these cases, a short read/write cache can provide a huge perfomance benefit
++ * In these cases, a short read/write cache can provide a huge perfomance benefit
+ * with dumb-as-a-rock code.
+- * In Linux, the page cache provides read buffering aand the short op cache provides write
++ * In Linux, the page cache provides read buffering aand the short op cache provides write
+ * buffering.
+ *
+ * There are a limited number (~10) of cache chunks per device so that we don't
+@@ -3765,14 +3917,14 @@ static int yaffs_ObjectHasCachedWriteDat
+ int i;
+ yaffs_ChunkCache *cache;
+ int nCaches = obj->myDev->nShortOpCaches;
+-
++
+ for(i = 0; i < nCaches; i++){
+ cache = &dev->srCache[i];
+ if (cache->object == obj &&
+ cache->dirty)
+ return 1;
+ }
+-
++
+ return 0;
+ }
+
+@@ -3838,7 +3990,7 @@ void yaffs_FlushEntireDeviceCache(yaffs_
+ yaffs_Object *obj;
+ int nCaches = dev->nShortOpCaches;
+ int i;
+-
++
+ /* Find a dirty object in the cache and flush it...
+ * until there are no further dirty objects.
+ */
+@@ -3848,53 +4000,33 @@ void yaffs_FlushEntireDeviceCache(yaffs_
+ if (dev->srCache[i].object &&
+ dev->srCache[i].dirty)
+ obj = dev->srCache[i].object;
+-
++
+ }
+ if(obj)
+ yaffs_FlushFilesChunkCache(obj);
+-
++
+ } while(obj);
+-
++
+ }
+
+
+ /* Grab us a cache chunk for use.
+- * First look for an empty one.
++ * First look for an empty one.
+ * Then look for the least recently used non-dirty one.
+ * Then look for the least recently used dirty one...., flush and look again.
+ */
+ static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device * dev)
+ {
+ int i;
+- int usage;
+- int theOne;
+
+ if (dev->nShortOpCaches > 0) {
+ for (i = 0; i < dev->nShortOpCaches; i++) {
+- if (!dev->srCache[i].object)
++ if (!dev->srCache[i].object)
+ return &dev->srCache[i];
+ }
+-
+- return NULL;
+-
+- theOne = -1;
+- usage = 0; /* just to stop the compiler grizzling */
+-
+- for (i = 0; i < dev->nShortOpCaches; i++) {
+- if (!dev->srCache[i].dirty &&
+- ((dev->srCache[i].lastUse < usage && theOne >= 0) ||
+- theOne < 0)) {
+- usage = dev->srCache[i].lastUse;
+- theOne = i;
+- }
+- }
+-
+-
+- return theOne >= 0 ? &dev->srCache[theOne] : NULL;
+- } else {
+- return NULL;
+ }
+
++ return NULL;
+ }
+
+ static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device * dev)
+@@ -4032,14 +4164,14 @@ static void yaffs_InvalidateWholeChunkCa
+ static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head)
+ {
+ yaffs_CheckpointValidity cp;
+-
++
+ memset(&cp,0,sizeof(cp));
+-
++
+ cp.structType = sizeof(cp);
+ cp.magic = YAFFS_MAGIC;
+ cp.version = YAFFS_CHECKPOINT_VERSION;
+ cp.head = (head) ? 1 : 0;
+-
++
+ return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))?
+ 1 : 0;
+ }
+@@ -4048,9 +4180,9 @@ static int yaffs_ReadCheckpointValidityM
+ {
+ yaffs_CheckpointValidity cp;
+ int ok;
+-
++
+ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
+-
++
+ if(ok)
+ ok = (cp.structType == sizeof(cp)) &&
+ (cp.magic == YAFFS_MAGIC) &&
+@@ -4059,20 +4191,20 @@ static int yaffs_ReadCheckpointValidityM
+ return ok ? 1 : 0;
+ }
+
+-static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
++static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
+ yaffs_Device *dev)
+ {
+ cp->nErasedBlocks = dev->nErasedBlocks;
+ cp->allocationBlock = dev->allocationBlock;
+ cp->allocationPage = dev->allocationPage;
+ cp->nFreeChunks = dev->nFreeChunks;
+-
++
+ cp->nDeletedFiles = dev->nDeletedFiles;
+ cp->nUnlinkedFiles = dev->nUnlinkedFiles;
+ cp->nBackgroundDeletions = dev->nBackgroundDeletions;
+ cp->sequenceNumber = dev->sequenceNumber;
+ cp->oldestDirtySequence = dev->oldestDirtySequence;
+-
++
+ }
+
+ static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev,
+@@ -4082,7 +4214,7 @@ static void yaffs_CheckpointDeviceToDevi
+ dev->allocationBlock = cp->allocationBlock;
+ dev->allocationPage = cp->allocationPage;
+ dev->nFreeChunks = cp->nFreeChunks;
+-
++
+ dev->nDeletedFiles = cp->nDeletedFiles;
+ dev->nUnlinkedFiles = cp->nUnlinkedFiles;
+ dev->nBackgroundDeletions = cp->nBackgroundDeletions;
+@@ -4098,20 +4230,20 @@ static int yaffs_WriteCheckpointDevice(y
+ __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
+
+ int ok;
+-
++
+ /* Write device runtime values*/
+ yaffs_DeviceToCheckpointDevice(&cp,dev);
+ cp.structType = sizeof(cp);
+-
++
+ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
+-
++
+ /* Write block info */
+ if(ok) {
+ nBytes = nBlocks * sizeof(yaffs_BlockInfo);
+ ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
+ }
+-
+- /* Write chunk bits */
++
++ /* Write chunk bits */
+ if(ok) {
+ nBytes = nBlocks * dev->chunkBitmapStride;
+ ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
+@@ -4126,28 +4258,28 @@ static int yaffs_ReadCheckpointDevice(ya
+ __u32 nBytes;
+ __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
+
+- int ok;
+-
++ int ok;
++
+ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
+ if(!ok)
+ return 0;
+-
++
+ if(cp.structType != sizeof(cp))
+ return 0;
+-
+-
++
++
+ yaffs_CheckpointDeviceToDevice(dev,&cp);
+-
++
+ nBytes = nBlocks * sizeof(yaffs_BlockInfo);
+-
++
+ ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
+-
++
+ if(!ok)
+ return 0;
+ nBytes = nBlocks * dev->chunkBitmapStride;
+-
++
+ ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
+-
++
+ return ok ? 1 : 0;
+ }
+
+@@ -4157,7 +4289,7 @@ static void yaffs_ObjectToCheckpointObje
+
+ cp->objectId = obj->objectId;
+ cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
+- cp->chunkId = obj->chunkId;
++ cp->hdrChunk = obj->hdrChunk;
+ cp->variantType = obj->variantType;
+ cp->deleted = obj->deleted;
+ cp->softDeleted = obj->softDeleted;
+@@ -4167,7 +4299,7 @@ static void yaffs_ObjectToCheckpointObje
+ cp->unlinkAllowed = obj->unlinkAllowed;
+ cp->serial = obj->serial;
+ cp->nDataChunks = obj->nDataChunks;
+-
++
+ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+ cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
+ else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+@@ -4178,9 +4310,9 @@ static void yaffs_CheckpointObjectToObje
+ {
+
+ yaffs_Object *parent;
+-
++
+ obj->objectId = cp->objectId;
+-
++
+ if(cp->parentId)
+ parent = yaffs_FindOrCreateObjectByNumber(
+ obj->myDev,
+@@ -4188,11 +4320,11 @@ static void yaffs_CheckpointObjectToObje
+ YAFFS_OBJECT_TYPE_DIRECTORY);
+ else
+ parent = NULL;
+-
++
+ if(parent)
+ yaffs_AddObjectToDirectory(parent, obj);
+
+- obj->chunkId = cp->chunkId;
++ obj->hdrChunk = cp->hdrChunk;
+ obj->variantType = cp->variantType;
+ obj->deleted = cp->deleted;
+ obj->softDeleted = cp->softDeleted;
+@@ -4202,13 +4334,13 @@ static void yaffs_CheckpointObjectToObje
+ obj->unlinkAllowed = cp->unlinkAllowed;
+ obj->serial = cp->serial;
+ obj->nDataChunks = cp->nDataChunks;
+-
++
+ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
+ obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
+ else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
+ obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
+
+- if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
++ if(obj->hdrChunk > 0)
+ obj->lazyLoaded = 1;
+ }
+
+@@ -4220,7 +4352,11 @@ static int yaffs_CheckpointTnodeWorker(y
+ int i;
+ yaffs_Device *dev = in->myDev;
+ int ok = 1;
+- int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++ int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++ if(tnodeSize < sizeof(yaffs_Tnode))
++ tnodeSize = sizeof(yaffs_Tnode);
++
+
+ if (tn) {
+ if (level > 0) {
+@@ -4235,10 +4371,9 @@ static int yaffs_CheckpointTnodeWorker(y
+ }
+ } else if (level == 0) {
+ __u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS;
+- /* printf("write tnode at %d\n",baseOffset); */
+ ok = (yaffs_CheckpointWrite(dev,&baseOffset,sizeof(baseOffset)) == sizeof(baseOffset));
+ if(ok)
+- ok = (yaffs_CheckpointWrite(dev,tn,nTnodeBytes) == nTnodeBytes);
++ ok = (yaffs_CheckpointWrite(dev,tn,tnodeSize) == tnodeSize);
+ }
+ }
+
+@@ -4250,17 +4385,17 @@ static int yaffs_WriteCheckpointTnodes(y
+ {
+ __u32 endMarker = ~0;
+ int ok = 1;
+-
++
+ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){
+ ok = yaffs_CheckpointTnodeWorker(obj,
+ obj->variant.fileVariant.top,
+ obj->variant.fileVariant.topLevel,
+ 0);
+ if(ok)
+- ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
++ ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
+ sizeof(endMarker));
+ }
+-
++
+ return ok ? 1 : 0;
+ }
+
+@@ -4272,70 +4407,72 @@ static int yaffs_ReadCheckpointTnodes(ya
+ yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
+ yaffs_Tnode *tn;
+ int nread = 0;
++ int tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
+
+- ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
++ if(tnodeSize < sizeof(yaffs_Tnode))
++ tnodeSize = sizeof(yaffs_Tnode);
+
++ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
++
+ while(ok && (~baseChunk)){
+ nread++;
+ /* Read level 0 tnode */
+-
+-
+- /* printf("read tnode at %d\n",baseChunk); */
++
++
+ tn = yaffs_GetTnodeRaw(dev);
+ if(tn)
+- ok = (yaffs_CheckpointRead(dev,tn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8) ==
+- (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++ ok = (yaffs_CheckpointRead(dev,tn,tnodeSize) == tnodeSize);
+ else
+ ok = 0;
+-
++
+ if(tn && ok){
+ ok = yaffs_AddOrFindLevel0Tnode(dev,
+ fileStructPtr,
+ baseChunk,
+ tn) ? 1 : 0;
+-
++
+ }
+-
++
+ if(ok)
+ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
+-
++
+ }
+
+ T(YAFFS_TRACE_CHECKPOINT,(
+ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
+ nread,baseChunk,ok));
+
+- return ok ? 1 : 0;
++ return ok ? 1 : 0;
+ }
+-
++
+
+ static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
+ {
+ yaffs_Object *obj;
+- yaffs_CheckpointObject cp;
+- int i;
+- int ok = 1;
+- struct list_head *lh;
++ yaffs_CheckpointObject cp;
++ int i;
++ int ok = 1;
++ struct ylist_head *lh;
+
+-
+- /* Iterate through the objects in each hash entry,
++
++ /* Iterate through the objects in each hash entry,
+ * dumping them to the checkpointing stream.
+- */
+-
+- for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){
+- list_for_each(lh, &dev->objectBucket[i].list) {
+- if (lh) {
+- obj = list_entry(lh, yaffs_Object, hashLink);
+- if (!obj->deferedFree) {
+- yaffs_ObjectToCheckpointObject(&cp,obj);
+- cp.structType = sizeof(cp);
++ */
++
++ for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){
++ ylist_for_each(lh, &dev->objectBucket[i].list) {
++ if (lh) {
++ obj = ylist_entry(lh, yaffs_Object, hashLink);
++ if (!obj->deferedFree) {
++ yaffs_ObjectToCheckpointObject(&cp,obj);
++ cp.structType = sizeof(cp);
+
+ T(YAFFS_TRACE_CHECKPOINT,(
+ TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
+- cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
++ cp.objectId,cp.parentId,cp.variantType,cp.hdrChunk,(unsigned) obj));
+
+ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
+-
++
+ if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){
+ ok = yaffs_WriteCheckpointTnodes(obj);
+ }
+@@ -4343,14 +4480,14 @@ static int yaffs_WriteCheckpointObjects(
+ }
+ }
+ }
+-
++
+ /* Dump end of list */
+ memset(&cp,0xFF,sizeof(yaffs_CheckpointObject));
+ cp.structType = sizeof(cp);
+-
++
+ if(ok)
+ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
+-
++
+ return ok ? 1 : 0;
+ }
+
+@@ -4361,7 +4498,7 @@ static int yaffs_ReadCheckpointObjects(y
+ int ok = 1;
+ int done = 0;
+ yaffs_Object *hardList = NULL;
+-
++
+ while(ok && !done) {
+ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
+ if(cp.structType != sizeof(cp)) {
+@@ -4369,9 +4506,9 @@ static int yaffs_ReadCheckpointObjects(y
+ cp.structType,sizeof(cp),ok));
+ ok = 0;
+ }
+-
++
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
+- cp.objectId,cp.parentId,cp.variantType,cp.chunkId));
++ cp.objectId,cp.parentId,cp.variantType,cp.hdrChunk));
+
+ if(ok && cp.objectId == ~0)
+ done = 1;
+@@ -4380,21 +4517,21 @@ static int yaffs_ReadCheckpointObjects(y
+ if(obj) {
+ yaffs_CheckpointObjectToObject(obj,&cp);
+ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
+- ok = yaffs_ReadCheckpointTnodes(obj);
+- } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+- obj->hardLinks.next =
+- (struct list_head *)
+- hardList;
+- hardList = obj;
+- }
+-
++ ok = yaffs_ReadCheckpointTnodes(obj);
++ } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ obj->hardLinks.next =
++ (struct ylist_head *)
++ hardList;
++ hardList = obj;
++ }
++
+ }
+ }
+ }
+-
++
+ if(ok)
+ yaffs_HardlinkFixup(dev,hardList);
+-
++
+ return ok ? 1 : 0;
+ }
+
+@@ -4402,14 +4539,14 @@ static int yaffs_WriteCheckpointSum(yaff
+ {
+ __u32 checkpointSum;
+ int ok;
+-
++
+ yaffs_GetCheckpointSum(dev,&checkpointSum);
+-
++
+ ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum));
+-
++
+ if(!ok)
+ return 0;
+-
++
+ return 1;
+ }
+
+@@ -4418,17 +4555,17 @@ static int yaffs_ReadCheckpointSum(yaffs
+ __u32 checkpointSum0;
+ __u32 checkpointSum1;
+ int ok;
+-
++
+ yaffs_GetCheckpointSum(dev,&checkpointSum0);
+-
++
+ ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1));
+-
++
+ if(!ok)
+ return 0;
+-
++
+ if(checkpointSum0 != checkpointSum1)
+ return 0;
+-
++
+ return 1;
+ }
+
+@@ -4437,15 +4574,15 @@ static int yaffs_WriteCheckpointData(yaf
+ {
+
+ int ok = 1;
+-
++
+ if(dev->skipCheckpointWrite || !dev->isYaffs2){
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR)));
+ ok = 0;
+ }
+-
++
+ if(ok)
+ ok = yaffs_CheckpointOpen(dev,1);
+-
++
+ if(ok){
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
+ ok = yaffs_WriteCheckpointValidityMarker(dev,1);
+@@ -4462,18 +4599,18 @@ static int yaffs_WriteCheckpointData(yaf
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
+ ok = yaffs_WriteCheckpointValidityMarker(dev,0);
+ }
+-
++
+ if(ok){
+ ok = yaffs_WriteCheckpointSum(dev);
+ }
+-
+-
++
++
+ if(!yaffs_CheckpointClose(dev))
+ ok = 0;
+-
++
+ if(ok)
+ dev->isCheckpointed = 1;
+- else
++ else
+ dev->isCheckpointed = 0;
+
+ return dev->isCheckpointed;
+@@ -4482,17 +4619,17 @@ static int yaffs_WriteCheckpointData(yaf
+ static int yaffs_ReadCheckpointData(yaffs_Device *dev)
+ {
+ int ok = 1;
+-
++
+ if(dev->skipCheckpointRead || !dev->isYaffs2){
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR)));
+ ok = 0;
+ }
+-
++
+ if(ok)
+ ok = yaffs_CheckpointOpen(dev,0); /* open for read */
+-
++
+ if(ok){
+- T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
+ ok = yaffs_ReadCheckpointValidityMarker(dev,1);
+ }
+ if(ok){
+@@ -4500,14 +4637,14 @@ static int yaffs_ReadCheckpointData(yaff
+ ok = yaffs_ReadCheckpointDevice(dev);
+ }
+ if(ok){
+- T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
+ ok = yaffs_ReadCheckpointObjects(dev);
+ }
+ if(ok){
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
+ ok = yaffs_ReadCheckpointValidityMarker(dev,0);
+ }
+-
++
+ if(ok){
+ ok = yaffs_ReadCheckpointSum(dev);
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok));
+@@ -4518,7 +4655,7 @@ static int yaffs_ReadCheckpointData(yaff
+
+ if(ok)
+ dev->isCheckpointed = 1;
+- else
++ else
+ dev->isCheckpointed = 0;
+
+ return ok ? 1 : 0;
+@@ -4527,7 +4664,7 @@ static int yaffs_ReadCheckpointData(yaff
+
+ static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
+ {
+- if(dev->isCheckpointed ||
++ if(dev->isCheckpointed ||
+ dev->blocksInCheckpoint > 0){
+ dev->isCheckpointed = 0;
+ yaffs_CheckpointInvalidateStream(dev);
+@@ -4550,7 +4687,7 @@ int yaffs_CheckpointSave(yaffs_Device *d
+ yaffs_InvalidateCheckpoint(dev);
+ yaffs_WriteCheckpointData(dev);
+ }
+-
++
+ T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+
+ return dev->isCheckpointed;
+@@ -4560,7 +4697,7 @@ int yaffs_CheckpointRestore(yaffs_Device
+ {
+ int retval;
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+-
++
+ retval = yaffs_ReadCheckpointData(dev);
+
+ if(dev->isCheckpointed){
+@@ -4570,7 +4707,7 @@ int yaffs_CheckpointRestore(yaffs_Device
+ }
+
+ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
+-
++
+ return retval;
+ }
+
+@@ -4589,7 +4726,7 @@ int yaffs_ReadDataFromFile(yaffs_Object
+ {
+
+ int chunk;
+- int start;
++ __u32 start;
+ int nToCopy;
+ int n = nBytes;
+ int nDone = 0;
+@@ -4606,7 +4743,7 @@ int yaffs_ReadDataFromFile(yaffs_Object
+ chunk++;
+
+ /* OK now check for the curveball where the start and end are in
+- * the same chunk.
++ * the same chunk.
+ */
+ if ((start + n) < dev->nDataBytesPerChunk) {
+ nToCopy = n;
+@@ -4617,10 +4754,10 @@ int yaffs_ReadDataFromFile(yaffs_Object
+ cache = yaffs_FindChunkCache(in, chunk);
+
+ /* If the chunk is already in the cache or it is less than a whole chunk
+- * then use the cache (if there is caching)
++ * or we're using inband tags then use the cache (if there is caching)
+ * else bypass the cache.
+ */
+- if (cache || nToCopy != dev->nDataBytesPerChunk) {
++ if (cache || nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
+ if (dev->nShortOpCaches > 0) {
+
+ /* If we can't find the data in the cache, then load it up. */
+@@ -4641,14 +4778,9 @@ int yaffs_ReadDataFromFile(yaffs_Object
+
+ cache->locked = 1;
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+ memcpy(buffer, &cache->data[start], nToCopy);
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_LockYAFFS(TRUE);
+-#endif
+ cache->locked = 0;
+ } else {
+ /* Read into the local buffer then copy..*/
+@@ -4657,41 +4789,19 @@ int yaffs_ReadDataFromFile(yaffs_Object
+ yaffs_GetTempBuffer(dev, __LINE__);
+ yaffs_ReadChunkDataFromObject(in, chunk,
+ localBuffer);
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+ memcpy(buffer, &localBuffer[start], nToCopy);
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_LockYAFFS(TRUE);
+-#endif
++
+ yaffs_ReleaseTempBuffer(dev, localBuffer,
+ __LINE__);
+ }
+
+ } else {
+-#ifdef CONFIG_YAFFS_WINCE
+- __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
+-
+- /* Under WinCE can't do direct transfer. Need to use a local buffer.
+- * This is because we otherwise screw up WinCE's memory mapper
+- */
+- yaffs_ReadChunkDataFromObject(in, chunk, localBuffer);
+-
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_UnlockYAFFS(TRUE);
+-#endif
+- memcpy(buffer, localBuffer, dev->nDataBytesPerChunk);
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_LockYAFFS(TRUE);
+- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
+-#endif
+-
+-#else
+ /* A full chunk. Read directly into the supplied buffer. */
+ yaffs_ReadChunkDataFromObject(in, chunk, buffer);
+-#endif
++
+ }
+
+ n -= nToCopy;
+@@ -4709,14 +4819,15 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ {
+
+ int chunk;
+- int start;
++ __u32 start;
+ int nToCopy;
+- int n = nBytes;
+- int nDone = 0;
+- int nToWriteBack;
+- int startOfWrite = offset;
+- int chunkWritten = 0;
+- int nBytesRead;
++ int n = nBytes;
++ int nDone = 0;
++ int nToWriteBack;
++ int startOfWrite = offset;
++ int chunkWritten = 0;
++ __u32 nBytesRead;
++ __u32 chunkStart;
+
+ yaffs_Device *dev;
+
+@@ -4726,6 +4837,12 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ //chunk = offset / dev->nDataBytesPerChunk + 1;
+ //start = offset % dev->nDataBytesPerChunk;
+ yaffs_AddrToChunk(dev,offset,&chunk,&start);
++
++ if(chunk * dev->nDataBytesPerChunk + start != offset ||
++ start >= dev->nDataBytesPerChunk){
++ T(YAFFS_TRACE_ERROR,(TSTR("AddrToChunk of offset %d gives chunk %d start %d"TENDSTR),
++ (int)offset, chunk,start));
++ }
+ chunk++;
+
+ /* OK now check for the curveball where the start and end are in
+@@ -4740,9 +4857,12 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ * we need to write back as much as was there before.
+ */
+
+- nBytesRead =
+- in->variant.fileVariant.fileSize -
+- ((chunk - 1) * dev->nDataBytesPerChunk);
++ chunkStart = ((chunk - 1) * dev->nDataBytesPerChunk);
++
++ if(chunkStart > in->variant.fileVariant.fileSize)
++ nBytesRead = 0; /* Past end of file */
++ else
++ nBytesRead = in->variant.fileVariant.fileSize - chunkStart;
+
+ if (nBytesRead > dev->nDataBytesPerChunk) {
+ nBytesRead = dev->nDataBytesPerChunk;
+@@ -4751,19 +4871,24 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ nToWriteBack =
+ (nBytesRead >
+ (start + n)) ? nBytesRead : (start + n);
++
++ if(nToWriteBack < 0 || nToWriteBack > dev->nDataBytesPerChunk)
++ YBUG();
+
+ } else {
+ nToCopy = dev->nDataBytesPerChunk - start;
+ nToWriteBack = dev->nDataBytesPerChunk;
+ }
+
+- if (nToCopy != dev->nDataBytesPerChunk) {
+- /* An incomplete start or end chunk (or maybe both start and end chunk) */
++ if (nToCopy != dev->nDataBytesPerChunk || dev->inbandTags) {
++ /* An incomplete start or end chunk (or maybe both start and end chunk),
++ * or we're using inband tags, so we want to use the cache buffers.
++ */
+ if (dev->nShortOpCaches > 0) {
+ yaffs_ChunkCache *cache;
+ /* If we can't find the data in the cache, then load the cache */
+ cache = yaffs_FindChunkCache(in, chunk);
+-
++
+ if (!cache
+ && yaffs_CheckSpaceForAllocation(in->
+ myDev)) {
+@@ -4776,28 +4901,24 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ cache->
+ data);
+ }
+- else if(cache &&
++ else if(cache &&
+ !cache->dirty &&
+ !yaffs_CheckSpaceForAllocation(in->myDev)){
+ /* Drop the cache if it was a read cache item and
+ * no space check has been made for it.
+- */
++ */
+ cache = NULL;
+ }
+
+ if (cache) {
+ yaffs_UseChunkCache(dev, cache, 1);
+ cache->locked = 1;
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+
+ memcpy(&cache->data[start], buffer,
+ nToCopy);
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_LockYAFFS(TRUE);
+-#endif
++
+ cache->locked = 0;
+ cache->nBytes = nToWriteBack;
+
+@@ -4825,15 +4946,10 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ yaffs_ReadChunkDataFromObject(in, chunk,
+ localBuffer);
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_UnlockYAFFS(TRUE);
+-#endif
++
+
+ memcpy(&localBuffer[start], buffer, nToCopy);
+
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_LockYAFFS(TRUE);
+-#endif
+ chunkWritten =
+ yaffs_WriteChunkDataToObject(in, chunk,
+ localBuffer,
+@@ -4846,31 +4962,15 @@ int yaffs_WriteDataToFile(yaffs_Object *
+ }
+
+ } else {
+-
+-#ifdef CONFIG_YAFFS_WINCE
+- /* Under WinCE can't do direct transfer. Need to use a local buffer.
+- * This is because we otherwise screw up WinCE's memory mapper
+- */
+- __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_UnlockYAFFS(TRUE);
+-#endif
+- memcpy(localBuffer, buffer, dev->nDataBytesPerChunk);
+-#ifdef CONFIG_YAFFS_WINCE
+- yfsd_LockYAFFS(TRUE);
+-#endif
+- chunkWritten =
+- yaffs_WriteChunkDataToObject(in, chunk, localBuffer,
+- dev->nDataBytesPerChunk,
+- 0);
+- yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
+-#else
+ /* A full chunk. Write directly from the supplied buffer. */
++
++
++
+ chunkWritten =
+ yaffs_WriteChunkDataToObject(in, chunk, buffer,
+ dev->nDataBytesPerChunk,
+ 0);
+-#endif
++
+ /* Since we've overwritten the cached data, we better invalidate it. */
+ yaffs_InvalidateChunkCache(in, chunk);
+ }
+@@ -4943,9 +5043,9 @@ int yaffs_ResizeFile(yaffs_Object * in,
+ {
+
+ int oldFileSize = in->variant.fileVariant.fileSize;
+- int newSizeOfPartialChunk;
++ __u32 newSizeOfPartialChunk;
+ int newFullChunks;
+-
++
+ yaffs_Device *dev = in->myDev;
+
+ yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
+@@ -4953,23 +5053,23 @@ int yaffs_ResizeFile(yaffs_Object * in,
+ yaffs_FlushFilesChunkCache(in);
+ yaffs_InvalidateWholeChunkCache(in);
+
+- yaffs_CheckGarbageCollection(dev);
++ yaffs_CheckGarbageCollection(dev);
+
+- if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
+- return yaffs_GetFileSize(in);
+- }
++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
++ return YAFFS_FAIL;
++ }
+
+- if (newSize == oldFileSize) {
+- return oldFileSize;
+- }
++ if (newSize == oldFileSize) {
++ return YAFFS_OK;
++ }
+
+- if (newSize < oldFileSize) {
++ if (newSize < oldFileSize) {
+
+ yaffs_PruneResizedChunks(in, newSize);
+
+ if (newSizeOfPartialChunk != 0) {
+ int lastChunk = 1 + newFullChunks;
+-
++
+ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
+
+ /* Got to read and rewrite the last chunk with its new size and zero pad */
+@@ -4993,19 +5093,20 @@ int yaffs_ResizeFile(yaffs_Object * in,
+ in->variant.fileVariant.fileSize = newSize;
+ }
+
+-
+-
++
++
+ /* Write a new object header.
+ * show we've shrunk the file, if need be
+ * Do this only if the file is not in the deleted directories.
+ */
+- if (in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
++ if (in->parent &&
++ in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
+ in->parent->objectId != YAFFS_OBJECTID_DELETED) {
+ yaffs_UpdateObjectHeader(in, NULL, 0,
+ (newSize < oldFileSize) ? 1 : 0, 0);
+ }
+
+- return newSize;
++ return YAFFS_OK;
+ }
+
+ loff_t yaffs_GetFileSize(yaffs_Object * obj)
+@@ -5058,13 +5159,13 @@ static int yaffs_DoGenericObjectDeletion
+
+ if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
+ /* Move to the unlinked directory so we have a record that it was deleted. */
+- yaffs_ChangeObjectName(in, in->myDev->deletedDir,"deleted", 0, 0);
++ yaffs_ChangeObjectName(in, in->myDev->deletedDir,_Y("deleted"), 0, 0);
+
+ }
+
+ yaffs_RemoveObjectFromDirectory(in);
+- yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__);
+- in->chunkId = -1;
++ yaffs_DeleteChunk(in->myDev, in->hdrChunk, 1, __LINE__);
++ in->hdrChunk = 0;
+
+ yaffs_FreeObject(in);
+ return YAFFS_OK;
+@@ -5075,62 +5176,66 @@ static int yaffs_DoGenericObjectDeletion
+ * and the inode associated with the file.
+ * It does not delete the links associated with the file.
+ */
++
+ static int yaffs_UnlinkFile(yaffs_Object * in)
+ {
+
+ int retVal;
+ int immediateDeletion = 0;
+
+- if (1) {
+ #ifdef __KERNEL__
+- if (!in->myInode) {
+- immediateDeletion = 1;
+-
+- }
++ if (!in->myInode) {
++ immediateDeletion = 1;
++ }
+ #else
+- if (in->inUse <= 0) {
+- immediateDeletion = 1;
+-
+- }
++ if (in->inUse <= 0) {
++ immediateDeletion = 1;
++ }
+ #endif
+- if (immediateDeletion) {
+- retVal =
+- yaffs_ChangeObjectName(in, in->myDev->deletedDir,
+- "deleted", 0, 0);
+- T(YAFFS_TRACE_TRACING,
+- (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
+- in->objectId));
+- in->deleted = 1;
+- in->myDev->nDeletedFiles++;
+- if (0 && in->myDev->isYaffs2) {
+- yaffs_ResizeFile(in, 0);
+- }
+- yaffs_SoftDeleteFile(in);
+- } else {
+- retVal =
+- yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
+- "unlinked", 0, 0);
+- }
+
++ if (immediateDeletion) {
++ retVal =
++ yaffs_ChangeObjectName(in, in->myDev->deletedDir,
++ _Y("deleted"), 0, 0);
++ T(YAFFS_TRACE_TRACING,
++ (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
++ in->objectId));
++ in->deleted = 1;
++ in->myDev->nDeletedFiles++;
++ if (1 || in->myDev->isYaffs2) {
++ yaffs_ResizeFile(in, 0);
++ }
++ yaffs_SoftDeleteFile(in);
++ } else {
++ retVal =
++ yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
++ _Y("unlinked"), 0, 0);
+ }
++
++
+ return retVal;
+ }
+
+ int yaffs_DeleteFile(yaffs_Object * in)
+ {
+ int retVal = YAFFS_OK;
++ int deleted = in->deleted;
++
++ yaffs_ResizeFile(in,0);
+
+ if (in->nDataChunks > 0) {
+- /* Use soft deletion if there is data in the file */
++ /* Use soft deletion if there is data in the file.
++ * That won't be the case if it has been resized to zero.
++ */
+ if (!in->unlinked) {
+ retVal = yaffs_UnlinkFile(in);
+ }
+ if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
+- in->deleted = 1;
++ in->deleted = deleted = 1;
+ in->myDev->nDeletedFiles++;
+ yaffs_SoftDeleteFile(in);
+ }
+- return in->deleted ? YAFFS_OK : YAFFS_FAIL;
++ return deleted ? YAFFS_OK : YAFFS_FAIL;
+ } else {
+ /* The file has no data chunks so we toss it immediately */
+ yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
+@@ -5143,10 +5248,10 @@ int yaffs_DeleteFile(yaffs_Object * in)
+
+ static int yaffs_DeleteDirectory(yaffs_Object * in)
+ {
+- /* First check that the directory is empty. */
+- if (list_empty(&in->variant.directoryVariant.children)) {
+- return yaffs_DoGenericObjectDeletion(in);
+- }
++ /* First check that the directory is empty. */
++ if (ylist_empty(&in->variant.directoryVariant.children)) {
++ return yaffs_DoGenericObjectDeletion(in);
++ }
+
+ return YAFFS_FAIL;
+
+@@ -5161,11 +5266,11 @@ static int yaffs_DeleteSymLink(yaffs_Obj
+
+ static int yaffs_DeleteHardLink(yaffs_Object * in)
+ {
+- /* remove this hardlink from the list assocaited with the equivalent
+- * object
+- */
+- list_del(&in->hardLinks);
+- return yaffs_DoGenericObjectDeletion(in);
++ /* remove this hardlink from the list assocaited with the equivalent
++ * object
++ */
++ ylist_del_init(&in->hardLinks);
++ return yaffs_DoGenericObjectDeletion(in);
+ }
+
+ static void yaffs_DestroyObject(yaffs_Object * obj)
+@@ -5194,12 +5299,12 @@ static void yaffs_DestroyObject(yaffs_Ob
+ static int yaffs_UnlinkWorker(yaffs_Object * obj)
+ {
+
+- if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
+- return yaffs_DeleteHardLink(obj);
+- } else if (!list_empty(&obj->hardLinks)) {
+- /* Curve ball: We're unlinking an object that has a hardlink.
+- *
+- * This problem arises because we are not strictly following
++ if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ return yaffs_DeleteHardLink(obj);
++ } else if (!ylist_empty(&obj->hardLinks)) {
++ /* Curve ball: We're unlinking an object that has a hardlink.
++ *
++ * This problem arises because we are not strictly following
+ * The Linux link/inode model.
+ *
+ * We can't really delete the object.
+@@ -5212,15 +5317,15 @@ static int yaffs_UnlinkWorker(yaffs_Obje
+ */
+
+ yaffs_Object *hl;
+- int retVal;
+- YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
++ int retVal;
++ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+
+- hl = list_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
++ hl = ylist_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
+
+- list_del_init(&hl->hardLinks);
+- list_del_init(&hl->siblings);
++ ylist_del_init(&hl->hardLinks);
++ ylist_del_init(&hl->siblings);
+
+- yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
++ yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
+
+ retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
+
+@@ -5313,7 +5418,7 @@ static void yaffs_HardlinkFixup(yaffs_De
+ {
+ yaffs_Object *hl;
+ yaffs_Object *in;
+-
++
+ while (hardList) {
+ hl = hardList;
+ hardList = (yaffs_Object *) (hardList->hardLinks.next);
+@@ -5322,18 +5427,18 @@ static void yaffs_HardlinkFixup(yaffs_De
+ hl->variant.hardLinkVariant.
+ equivalentObjectId);
+
+- if (in) {
+- /* Add the hardlink pointers */
+- hl->variant.hardLinkVariant.equivalentObject = in;
+- list_add(&hl->hardLinks, &in->hardLinks);
+- } else {
+- /* Todo Need to report/handle this better.
+- * Got a problem... hardlink to a non-existant object
+- */
+- hl->variant.hardLinkVariant.equivalentObject = NULL;
+- INIT_LIST_HEAD(&hl->hardLinks);
++ if (in) {
++ /* Add the hardlink pointers */
++ hl->variant.hardLinkVariant.equivalentObject = in;
++ ylist_add(&hl->hardLinks, &in->hardLinks);
++ } else {
++ /* Todo Need to report/handle this better.
++ * Got a problem... hardlink to a non-existant object
++ */
++ hl->variant.hardLinkVariant.equivalentObject = NULL;
++ YINIT_LIST_HEAD(&hl->hardLinks);
+
+- }
++ }
+
+ }
+
+@@ -5355,6 +5460,42 @@ static int ybicmp(const void *a, const v
+
+ }
+
++
++struct yaffs_ShadowFixerStruct {
++ int objectId;
++ int shadowedId;
++ struct yaffs_ShadowFixerStruct *next;
++};
++
++
++static void yaffs_StripDeletedObjects(yaffs_Device *dev)
++{
++ /*
++ * Sort out state of unlinked and deleted objects after scanning.
++ */
++ struct ylist_head *i;
++ struct ylist_head *n;
++ yaffs_Object *l;
++
++ /* Soft delete all the unlinked files */
++ ylist_for_each_safe(i, n,
++ &dev->unlinkedDir->variant.directoryVariant.children) {
++ if (i) {
++ l = ylist_entry(i, yaffs_Object, siblings);
++ yaffs_DestroyObject(l);
++ }
++ }
++
++ ylist_for_each_safe(i, n,
++ &dev->deletedDir->variant.directoryVariant.children) {
++ if (i) {
++ l = ylist_entry(i, yaffs_Object, siblings);
++ yaffs_DestroyObject(l);
++ }
++ }
++
++}
++
+ static int yaffs_Scan(yaffs_Device * dev)
+ {
+ yaffs_ExtendedTags tags;
+@@ -5362,7 +5503,6 @@ static int yaffs_Scan(yaffs_Device * dev
+ int blockIterator;
+ int startIterator;
+ int endIterator;
+- int nBlocksToScan = 0;
+ int result;
+
+ int chunk;
+@@ -5371,27 +5511,20 @@ static int yaffs_Scan(yaffs_Device * dev
+ yaffs_BlockState state;
+ yaffs_Object *hardList = NULL;
+ yaffs_BlockInfo *bi;
+- int sequenceNumber;
++ __u32 sequenceNumber;
+ yaffs_ObjectHeader *oh;
+ yaffs_Object *in;
+ yaffs_Object *parent;
+- int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+-
++
+ int alloc_failed = 0;
+-
++
++ struct yaffs_ShadowFixerStruct *shadowFixerList = NULL;
++
+
+ __u8 *chunkData;
+
+- yaffs_BlockIndex *blockIndex = NULL;
+-
+- if (dev->isYaffs2) {
+- T(YAFFS_TRACE_SCAN,
+- (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR)));
+- return YAFFS_FAIL;
+- }
+-
+- //TODO Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format.
+-
++
++
+ T(YAFFS_TRACE_SCAN,
+ (TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR),
+ dev->internalStartBlock, dev->internalEndBlock));
+@@ -5400,12 +5533,6 @@ static int yaffs_Scan(yaffs_Device * dev
+
+ dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
+
+- if (dev->isYaffs2) {
+- blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
+- if(!blockIndex)
+- return YAFFS_FAIL;
+- }
+-
+ /* Scan all the blocks to determine their state */
+ for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
+ bi = yaffs_GetBlockInfo(dev, blk);
+@@ -5430,70 +5557,21 @@ static int yaffs_Scan(yaffs_Device * dev
+ (TSTR("Block empty " TENDSTR)));
+ dev->nErasedBlocks++;
+ dev->nFreeChunks += dev->nChunksPerBlock;
+- } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+-
+- /* Determine the highest sequence number */
+- if (dev->isYaffs2 &&
+- sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+- sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
+-
+- blockIndex[nBlocksToScan].seq = sequenceNumber;
+- blockIndex[nBlocksToScan].block = blk;
+-
+- nBlocksToScan++;
+-
+- if (sequenceNumber >= dev->sequenceNumber) {
+- dev->sequenceNumber = sequenceNumber;
+- }
+- } else if (dev->isYaffs2) {
+- /* TODO: Nasty sequence number! */
+- T(YAFFS_TRACE_SCAN,
+- (TSTR
+- ("Block scanning block %d has bad sequence number %d"
+- TENDSTR), blk, sequenceNumber));
+-
+- }
+- }
++ }
+ }
+
+- /* Sort the blocks
+- * Dungy old bubble sort for now...
+- */
+- if (dev->isYaffs2) {
+- yaffs_BlockIndex temp;
+- int i;
+- int j;
+-
+- for (i = 0; i < nBlocksToScan; i++)
+- for (j = i + 1; j < nBlocksToScan; j++)
+- if (blockIndex[i].seq > blockIndex[j].seq) {
+- temp = blockIndex[j];
+- blockIndex[j] = blockIndex[i];
+- blockIndex[i] = temp;
+- }
+- }
+-
+- /* Now scan the blocks looking at the data. */
+- if (dev->isYaffs2) {
+- startIterator = 0;
+- endIterator = nBlocksToScan - 1;
+- T(YAFFS_TRACE_SCAN_DEBUG,
+- (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
+- } else {
+- startIterator = dev->internalStartBlock;
+- endIterator = dev->internalEndBlock;
+- }
++ startIterator = dev->internalStartBlock;
++ endIterator = dev->internalEndBlock;
+
+ /* For each block.... */
+ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
+ blockIterator++) {
++
++ YYIELD();
+
+- if (dev->isYaffs2) {
+- /* get the block to scan in the correct order */
+- blk = blockIndex[blockIterator].block;
+- } else {
+- blk = blockIterator;
+- }
++ YYIELD();
++
++ blk = blockIterator;
+
+ bi = yaffs_GetBlockInfo(dev, blk);
+ state = bi->blockState;
+@@ -5511,7 +5589,7 @@ static int yaffs_Scan(yaffs_Device * dev
+
+ /* Let's have a good look at this chunk... */
+
+- if (!dev->isYaffs2 && tags.chunkDeleted) {
++ if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED || tags.chunkDeleted) {
+ /* YAFFS1 only...
+ * A deleted chunk
+ */
+@@ -5520,7 +5598,7 @@ static int yaffs_Scan(yaffs_Device * dev
+ /*T((" %d %d deleted\n",blk,c)); */
+ } else if (!tags.chunkUsed) {
+ /* An unassigned chunk in the block
+- * This means that either the block is empty or
++ * This means that either the block is empty or
+ * this is the one being allocated from
+ */
+
+@@ -5537,21 +5615,9 @@ static int yaffs_Scan(yaffs_Device * dev
+ state = YAFFS_BLOCK_STATE_ALLOCATING;
+ dev->allocationBlock = blk;
+ dev->allocationPage = c;
+- dev->allocationBlockFinder = blk;
++ dev->allocationBlockFinder = blk;
+ /* Set it to here to encourage the allocator to go forth from here. */
+-
+- /* Yaffs2 sanity check:
+- * This should be the one with the highest sequence number
+- */
+- if (dev->isYaffs2
+- && (dev->sequenceNumber !=
+- bi->sequenceNumber)) {
+- T(YAFFS_TRACE_ALWAYS,
+- (TSTR
+- ("yaffs: Allocation block %d was not highest sequence id:"
+- " block seq = %d, dev seq = %d"
+- TENDSTR), blk,bi->sequenceNumber,dev->sequenceNumber));
+- }
++
+ }
+
+ dev->nFreeChunks += (dev->nChunksPerBlock - c);
+@@ -5569,7 +5635,7 @@ static int yaffs_Scan(yaffs_Device * dev
+ /* PutChunkIntoFile checks for a clash (two data chunks with
+ * the same chunkId).
+ */
+-
++
+ if(!in)
+ alloc_failed = 1;
+
+@@ -5577,11 +5643,11 @@ static int yaffs_Scan(yaffs_Device * dev
+ if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1))
+ alloc_failed = 1;
+ }
+-
++
+ endpos =
+ (tags.chunkId - 1) * dev->nDataBytesPerChunk +
+ tags.byteCount;
+- if (in &&
++ if (in &&
+ in->variantType == YAFFS_OBJECT_TYPE_FILE
+ && in->variant.fileVariant.scannedFileSize <
+ endpos) {
+@@ -5613,7 +5679,7 @@ static int yaffs_Scan(yaffs_Device * dev
+ tags.objectId);
+ if (in && in->variantType != oh->type) {
+ /* This should not happen, but somehow
+- * Wev'e ended up with an objectId that has been reused but not yet
++ * Wev'e ended up with an objectId that has been reused but not yet
+ * deleted, and worse still it has changed type. Delete the old object.
+ */
+
+@@ -5629,12 +5695,18 @@ static int yaffs_Scan(yaffs_Device * dev
+
+ if(!in)
+ alloc_failed = 1;
+-
++
+ if (in && oh->shadowsObject > 0) {
+- yaffs_HandleShadowedObject(dev,
+- oh->
+- shadowsObject,
+- 0);
++
++ struct yaffs_ShadowFixerStruct *fixer;
++ fixer = YMALLOC(sizeof(struct yaffs_ShadowFixerStruct));
++ if(fixer){
++ fixer-> next = shadowFixerList;
++ shadowFixerList = fixer;
++ fixer->objectId = tags.objectId;
++ fixer->shadowedId = oh->shadowsObject;
++ }
++
+ }
+
+ if (in && in->valid) {
+@@ -5643,12 +5715,10 @@ static int yaffs_Scan(yaffs_Device * dev
+ unsigned existingSerial = in->serial;
+ unsigned newSerial = tags.serialNumber;
+
+- if (dev->isYaffs2 ||
+- ((existingSerial + 1) & 3) ==
+- newSerial) {
++ if (((existingSerial + 1) & 3) == newSerial) {
+ /* Use new one - destroy the exisiting one */
+ yaffs_DeleteChunk(dev,
+- in->chunkId,
++ in->hdrChunk,
+ 1, __LINE__);
+ in->valid = 0;
+ } else {
+@@ -5681,7 +5751,8 @@ static int yaffs_Scan(yaffs_Device * dev
+ in->yst_ctime = oh->yst_ctime;
+ in->yst_rdev = oh->yst_rdev;
+ #endif
+- in->chunkId = chunk;
++ in->hdrChunk = chunk;
++ in->serial = tags.serialNumber;
+
+ } else if (in && !in->valid) {
+ /* we need to load this info */
+@@ -5705,7 +5776,8 @@ static int yaffs_Scan(yaffs_Device * dev
+ in->yst_ctime = oh->yst_ctime;
+ in->yst_rdev = oh->yst_rdev;
+ #endif
+- in->chunkId = chunk;
++ in->hdrChunk = chunk;
++ in->serial = tags.serialNumber;
+
+ yaffs_SetObjectName(in, oh->name);
+ in->dirty = 0;
+@@ -5720,13 +5792,13 @@ static int yaffs_Scan(yaffs_Device * dev
+ YAFFS_OBJECT_TYPE_DIRECTORY);
+ if (parent->variantType ==
+ YAFFS_OBJECT_TYPE_UNKNOWN) {
+- /* Set up as a directory */
+- parent->variantType =
+- YAFFS_OBJECT_TYPE_DIRECTORY;
+- INIT_LIST_HEAD(&parent->variant.
+- directoryVariant.
+- children);
+- } else if (parent->variantType !=
++ /* Set up as a directory */
++ parent->variantType =
++ YAFFS_OBJECT_TYPE_DIRECTORY;
++ YINIT_LIST_HEAD(&parent->variant.
++ directoryVariant.
++ children);
++ } else if (parent->variantType !=
+ YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ /* Hoosterman, another problem....
+@@ -5735,8 +5807,7 @@ static int yaffs_Scan(yaffs_Device * dev
+
+ T(YAFFS_TRACE_ERROR,
+ (TSTR
+- ("yaffs tragedy: attempting to use non-directory as"
+- " a directory in scan. Put in lost+found."
++ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+ TENDSTR)));
+ parent = dev->lostNFoundDir;
+ }
+@@ -5752,23 +5823,14 @@ static int yaffs_Scan(yaffs_Device * dev
+ * Since we might scan a hardlink before its equivalent object is scanned
+ * we put them all in a list.
+ * After scanning is complete, we should have all the objects, so we run through this
+- * list and fix up all the chains.
++ * list and fix up all the chains.
+ */
+
+ switch (in->variantType) {
+- case YAFFS_OBJECT_TYPE_UNKNOWN:
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* Todo got a problem */
+ break;
+ case YAFFS_OBJECT_TYPE_FILE:
+- if (dev->isYaffs2
+- && oh->isShrink) {
+- /* Prune back the shrunken chunks */
+- yaffs_PruneResizedChunks
+- (in, oh->fileSize);
+- /* Mark the block as having a shrinkHeader */
+- bi->hasShrinkHeader = 1;
+- }
+-
+ if (dev->useHeaderFileSize)
+
+ in->variant.fileVariant.
+@@ -5778,20 +5840,20 @@ static int yaffs_Scan(yaffs_Device * dev
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ in->variant.hardLinkVariant.
+- equivalentObjectId =
+- oh->equivalentObjectId;
+- in->hardLinks.next =
+- (struct list_head *)
+- hardList;
+- hardList = in;
+- break;
++ equivalentObjectId =
++ oh->equivalentObjectId;
++ in->hardLinks.next =
++ (struct ylist_head *)
++ hardList;
++ hardList = in;
++ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ /* Do nothing */
+ break;
+ case YAFFS_OBJECT_TYPE_SPECIAL:
+ /* Do nothing */
+ break;
+- case YAFFS_OBJECT_TYPE_SYMLINK:
++ case YAFFS_OBJECT_TYPE_SYMLINK:
+ in->variant.symLinkVariant.alias =
+ yaffs_CloneString(oh->alias);
+ if(!in->variant.symLinkVariant.alias)
+@@ -5799,10 +5861,12 @@ static int yaffs_Scan(yaffs_Device * dev
+ break;
+ }
+
+- if (parent == dev->deletedDir) {
++/*
++ if (parent == dev->deletedDir) {
+ yaffs_DestroyObject(in);
+ bi->hasShrinkHeader = 1;
+ }
++*/
+ }
+ }
+ }
+@@ -5823,35 +5887,36 @@ static int yaffs_Scan(yaffs_Device * dev
+
+ }
+
+- if (blockIndex) {
+- YFREE(blockIndex);
+- }
+-
+-
++
+ /* Ok, we've done all the scanning.
+ * Fix up the hard link chains.
+- * We should now have scanned all the objects, now it's time to add these
++ * We should now have scanned all the objects, now it's time to add these
+ * hardlinks.
+ */
+
+ yaffs_HardlinkFixup(dev,hardList);
+-
+- /* Handle the unlinked files. Since they were left in an unlinked state we should
+- * just delete them.
+- */
++
++ /* Fix up any shadowed objects */
+ {
+- struct list_head *i;
+- struct list_head *n;
+-
+- yaffs_Object *l;
+- /* Soft delete all the unlinked files */
+- list_for_each_safe(i, n,
+- &dev->unlinkedDir->variant.directoryVariant.
+- children) {
+- if (i) {
+- l = list_entry(i, yaffs_Object, siblings);
+- yaffs_DestroyObject(l);
++ struct yaffs_ShadowFixerStruct *fixer;
++ yaffs_Object *obj;
++
++ while(shadowFixerList){
++ fixer = shadowFixerList;
++ shadowFixerList = fixer->next;
++ /* Complete the rename transaction by deleting the shadowed object
++ * then setting the object header to unshadowed.
++ */
++ obj = yaffs_FindObjectByNumber(dev,fixer->shadowedId);
++ if(obj)
++ yaffs_DestroyObject(obj);
++
++ obj = yaffs_FindObjectByNumber(dev,fixer->objectId);
++ if(obj){
++ yaffs_UpdateObjectHeader(obj,NULL,1,0,0);
+ }
++
++ YFREE(fixer);
+ }
+ }
+
+@@ -5860,9 +5925,9 @@ static int yaffs_Scan(yaffs_Device * dev
+ if(alloc_failed){
+ return YAFFS_FAIL;
+ }
+-
++
+ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
+-
++
+
+ return YAFFS_OK;
+ }
+@@ -5871,25 +5936,27 @@ static void yaffs_CheckObjectDetailsLoad
+ {
+ __u8 *chunkData;
+ yaffs_ObjectHeader *oh;
+- yaffs_Device *dev = in->myDev;
++ yaffs_Device *dev;
+ yaffs_ExtendedTags tags;
+ int result;
+ int alloc_failed = 0;
+
+ if(!in)
+ return;
+-
++
++ dev = in->myDev;
++
+ #if 0
+ T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR),
+ in->objectId,
+ in->lazyLoaded ? "not yet" : "already"));
+ #endif
+
+- if(in->lazyLoaded){
++ if(in->lazyLoaded && in->hdrChunk > 0){
+ in->lazyLoaded = 0;
+ chunkData = yaffs_GetTempBuffer(dev, __LINE__);
+
+- result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags);
++ result = yaffs_ReadChunkWithTagsFromNAND(dev,in->hdrChunk,chunkData,&tags);
+ oh = (yaffs_ObjectHeader *) chunkData;
+
+ in->yst_mode = oh->yst_mode;
+@@ -5907,17 +5974,17 @@ static void yaffs_CheckObjectDetailsLoad
+ in->yst_mtime = oh->yst_mtime;
+ in->yst_ctime = oh->yst_ctime;
+ in->yst_rdev = oh->yst_rdev;
+-
++
+ #endif
+ yaffs_SetObjectName(in, oh->name);
+-
++
+ if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){
+ in->variant.symLinkVariant.alias =
+ yaffs_CloneString(oh->alias);
+ if(!in->variant.symLinkVariant.alias)
+ alloc_failed = 1; /* Not returned to caller */
+ }
+-
++
+ yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
+ }
+ }
+@@ -5938,20 +6005,20 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ yaffs_BlockState state;
+ yaffs_Object *hardList = NULL;
+ yaffs_BlockInfo *bi;
+- int sequenceNumber;
++ __u32 sequenceNumber;
+ yaffs_ObjectHeader *oh;
+ yaffs_Object *in;
+ yaffs_Object *parent;
+ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
+ int itsUnlinked;
+ __u8 *chunkData;
+-
++
+ int fileSize;
+ int isShrink;
+ int foundChunksInBlock;
+ int equivalentObjectId;
+ int alloc_failed = 0;
+-
++
+
+ yaffs_BlockIndex *blockIndex = NULL;
+ int altBlockIndex = 0;
+@@ -5971,20 +6038,20 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
+
+ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
+-
++
+ if(!blockIndex) {
+ blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
+ altBlockIndex = 1;
+ }
+-
++
+ if(!blockIndex) {
+ T(YAFFS_TRACE_SCAN,
+ (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
+ return YAFFS_FAIL;
+ }
+-
++
+ dev->blocksInCheckpoint = 0;
+-
++
+ chunkData = yaffs_GetTempBuffer(dev, __LINE__);
+
+ /* Scan all the blocks to determine their state */
+@@ -6001,15 +6068,15 @@ static int yaffs_ScanBackwards(yaffs_Dev
+
+ if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
+ bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
+-
++
+ T(YAFFS_TRACE_SCAN_DEBUG,
+ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
+ state, sequenceNumber));
+
+-
++
+ if(state == YAFFS_BLOCK_STATE_CHECKPOINT){
+ dev->blocksInCheckpoint++;
+-
++
+ } else if (state == YAFFS_BLOCK_STATE_DEAD) {
+ T(YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("block %d is bad" TENDSTR), blk));
+@@ -6021,8 +6088,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
+
+ /* Determine the highest sequence number */
+- if (dev->isYaffs2 &&
+- sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
++ if (sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
+ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
+
+ blockIndex[nBlocksToScan].seq = sequenceNumber;
+@@ -6033,7 +6099,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ if (sequenceNumber >= dev->sequenceNumber) {
+ dev->sequenceNumber = sequenceNumber;
+ }
+- } else if (dev->isYaffs2) {
++ } else {
+ /* TODO: Nasty sequence number! */
+ T(YAFFS_TRACE_SCAN,
+ (TSTR
+@@ -6053,12 +6119,14 @@ static int yaffs_ScanBackwards(yaffs_Dev
+
+ /* Sort the blocks */
+ #ifndef CONFIG_YAFFS_USE_OWN_SORT
+- yaffs_qsort(blockIndex, nBlocksToScan,
+- sizeof(yaffs_BlockIndex), ybicmp);
++ {
++ /* Use qsort now. */
++ yaffs_qsort(blockIndex, nBlocksToScan, sizeof(yaffs_BlockIndex), ybicmp);
++ }
+ #else
+ {
+ /* Dungy old bubble sort... */
+-
++
+ yaffs_BlockIndex temp;
+ int i;
+ int j;
+@@ -6094,22 +6162,22 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ blk = blockIndex[blockIterator].block;
+
+ bi = yaffs_GetBlockInfo(dev, blk);
+-
+-
++
++
+ state = bi->blockState;
+
+ deleted = 0;
+
+ /* For each chunk in each block that needs scanning.... */
+ foundChunksInBlock = 0;
+- for (c = dev->nChunksPerBlock - 1;
++ for (c = dev->nChunksPerBlock - 1;
+ !alloc_failed && c >= 0 &&
+ (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
+ state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
+- /* Scan backwards...
++ /* Scan backwards...
+ * Read the tags and decide what to do
+ */
+-
++
+ chunk = blk * dev->nChunksPerBlock + c;
+
+ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
+@@ -6123,14 +6191,14 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ * it is a chunk that was skipped due to failing the erased
+ * check. Just skip it so that it can be deleted.
+ * But, more typically, We get here when this is an unallocated
+- * chunk and his means that either the block is empty or
++ * chunk and his means that either the block is empty or
+ * this is the one being allocated from
+ */
+
+ if(foundChunksInBlock)
+ {
+ /* This is a chunk that was skipped due to failing the erased check */
+-
++
+ } else if (c == 0) {
+ /* We're looking at the first chunk in the block so the block is unused */
+ state = YAFFS_BLOCK_STATE_EMPTY;
+@@ -6140,7 +6208,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ state == YAFFS_BLOCK_STATE_ALLOCATING) {
+ if(dev->sequenceNumber == bi->sequenceNumber) {
+ /* this is the block being allocated from */
+-
++
+ T(YAFFS_TRACE_SCAN,
+ (TSTR
+ (" Allocating from %d %d"
+@@ -6149,34 +6217,41 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ state = YAFFS_BLOCK_STATE_ALLOCATING;
+ dev->allocationBlock = blk;
+ dev->allocationPage = c;
+- dev->allocationBlockFinder = blk;
++ dev->allocationBlockFinder = blk;
+ }
+ else {
+ /* This is a partially written block that is not
+ * the current allocation block. This block must have
+ * had a write failure, so set up for retirement.
+ */
+-
+- bi->needsRetiring = 1;
++
++ /* bi->needsRetiring = 1; ??? TODO */
+ bi->gcPrioritise = 1;
+-
++
+ T(YAFFS_TRACE_ALWAYS,
+- (TSTR("Partially written block %d being set for retirement" TENDSTR),
++ (TSTR("Partially written block %d detected" TENDSTR),
+ blk));
+ }
+
+ }
+-
++
+ }
+
+ dev->nFreeChunks++;
++
++ } else if (tags.eccResult == YAFFS_ECC_RESULT_UNFIXED){
++ T(YAFFS_TRACE_SCAN,
++ (TSTR(" Unfixed ECC in chunk(%d:%d), chunk ignored"TENDSTR),
++ blk, c));
+
+- } else if (tags.chunkId > 0) {
++ dev->nFreeChunks++;
++
++ }else if (tags.chunkId > 0) {
+ /* chunkId > 0 so it is a data chunk... */
+ unsigned int endpos;
+ __u32 chunkBase =
+ (tags.chunkId - 1) * dev->nDataBytesPerChunk;
+-
++
+ foundChunksInBlock = 1;
+
+
+@@ -6191,7 +6266,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ /* Out of memory */
+ alloc_failed = 1;
+ }
+-
++
+ if (in &&
+ in->variantType == YAFFS_OBJECT_TYPE_FILE
+ && chunkBase <
+@@ -6202,14 +6277,14 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ alloc_failed = 1;
+ }
+
+- /* File size is calculated by looking at the data chunks if we have not
++ /* File size is calculated by looking at the data chunks if we have not
+ * seen an object header yet. Stop this practice once we find an object header.
+ */
+ endpos =
+ (tags.chunkId -
+ 1) * dev->nDataBytesPerChunk +
+ tags.byteCount;
+-
++
+ if (!in->valid && /* have not got an object header yet */
+ in->variant.fileVariant.
+ scannedFileSize < endpos) {
+@@ -6255,7 +6330,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ ) {
+
+ /* If we don't have valid info then we need to read the chunk
+- * TODO In future we can probably defer reading the chunk and
++ * TODO In future we can probably defer reading the chunk and
+ * living with invalid data until needed.
+ */
+
+@@ -6265,6 +6340,12 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ NULL);
+
+ oh = (yaffs_ObjectHeader *) chunkData;
++
++ if(dev->inbandTags){
++ /* Fix up the header if they got corrupted by inband tags */
++ oh->shadowsObject = oh->inbandShadowsObject;
++ oh->isShrink = oh->inbandIsShrink;
++ }
+
+ if (!in)
+ in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
+@@ -6275,20 +6356,19 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ /* TODO Hoosterman we have a problem! */
+ T(YAFFS_TRACE_ERROR,
+ (TSTR
+- ("yaffs tragedy: Could not make object for object %d "
+- "at chunk %d during scan"
++ ("yaffs tragedy: Could not make object for object %d at chunk %d during scan"
+ TENDSTR), tags.objectId, chunk));
+
+ }
+
+ if (in->valid) {
+ /* We have already filled this one.
+- * We have a duplicate that will be discarded, but
++ * We have a duplicate that will be discarded, but
+ * we first have to suck out resize info if it is a file.
+ */
+
+- if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
+- ((oh &&
++ if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
++ ((oh &&
+ oh-> type == YAFFS_OBJECT_TYPE_FILE)||
+ (tags.extraHeaderInfoAvailable &&
+ tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
+@@ -6300,7 +6380,9 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ (oh) ? oh->
+ parentObjectId : tags.
+ extraParentObjectId;
+- unsigned isShrink =
++
++
++ isShrink =
+ (oh) ? oh->isShrink : tags.
+ extraIsShrinkHeader;
+
+@@ -6339,7 +6421,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ YAFFS_OBJECTID_LOSTNFOUND)) {
+ /* We only load some info, don't fiddle with directory structure */
+ in->valid = 1;
+-
++
+ if(oh) {
+ in->variantType = oh->type;
+
+@@ -6358,20 +6440,20 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ in->yst_mtime = oh->yst_mtime;
+ in->yst_ctime = oh->yst_ctime;
+ in->yst_rdev = oh->yst_rdev;
+-
++
+ #endif
+ } else {
+ in->variantType = tags.extraObjectType;
+ in->lazyLoaded = 1;
+ }
+
+- in->chunkId = chunk;
++ in->hdrChunk = chunk;
+
+ } else if (!in->valid) {
+ /* we need to load this info */
+
+ in->valid = 1;
+- in->chunkId = chunk;
++ in->hdrChunk = chunk;
+
+ if(oh) {
+ in->variantType = oh->type;
+@@ -6393,12 +6475,12 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ in->yst_rdev = oh->yst_rdev;
+ #endif
+
+- if (oh->shadowsObject > 0)
++ if (oh->shadowsObject > 0)
+ yaffs_HandleShadowedObject(dev,
+ oh->
+ shadowsObject,
+ 1);
+-
++
+
+ yaffs_SetObjectName(in, oh->name);
+ parent =
+@@ -6431,13 +6513,13 @@ static int yaffs_ScanBackwards(yaffs_Dev
+
+ if (parent->variantType ==
+ YAFFS_OBJECT_TYPE_UNKNOWN) {
+- /* Set up as a directory */
+- parent->variantType =
+- YAFFS_OBJECT_TYPE_DIRECTORY;
+- INIT_LIST_HEAD(&parent->variant.
+- directoryVariant.
+- children);
+- } else if (parent->variantType !=
++ /* Set up as a directory */
++ parent->variantType =
++ YAFFS_OBJECT_TYPE_DIRECTORY;
++ YINIT_LIST_HEAD(&parent->variant.
++ directoryVariant.
++ children);
++ } else if (parent->variantType !=
+ YAFFS_OBJECT_TYPE_DIRECTORY)
+ {
+ /* Hoosterman, another problem....
+@@ -6446,8 +6528,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+
+ T(YAFFS_TRACE_ERROR,
+ (TSTR
+- ("yaffs tragedy: attempting to use non-directory as"
+- " a directory in scan. Put in lost+found."
++ ("yaffs tragedy: attempting to use non-directory as a directory in scan. Put in lost+found."
+ TENDSTR)));
+ parent = dev->lostNFoundDir;
+ }
+@@ -6466,11 +6547,11 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ * Since we might scan a hardlink before its equivalent object is scanned
+ * we put them all in a list.
+ * After scanning is complete, we should have all the objects, so we run
+- * through this list and fix up all the chains.
++ * through this list and fix up all the chains.
+ */
+
+ switch (in->variantType) {
+- case YAFFS_OBJECT_TYPE_UNKNOWN:
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
+ /* Todo got a problem */
+ break;
+ case YAFFS_OBJECT_TYPE_FILE:
+@@ -6479,7 +6560,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ scannedFileSize < fileSize) {
+ /* This covers the case where the file size is greater
+ * than where the data is
+- * This will happen if the file is resized to be larger
++ * This will happen if the file is resized to be larger
+ * than its current data extents.
+ */
+ in->variant.fileVariant.fileSize = fileSize;
+@@ -6495,13 +6576,13 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ break;
+ case YAFFS_OBJECT_TYPE_HARDLINK:
+ if(!itsUnlinked) {
+- in->variant.hardLinkVariant.equivalentObjectId =
+- equivalentObjectId;
+- in->hardLinks.next =
+- (struct list_head *) hardList;
+- hardList = in;
+- }
+- break;
++ in->variant.hardLinkVariant.equivalentObjectId =
++ equivalentObjectId;
++ in->hardLinks.next =
++ (struct ylist_head *) hardList;
++ hardList = in;
++ }
++ break;
+ case YAFFS_OBJECT_TYPE_DIRECTORY:
+ /* Do nothing */
+ break;
+@@ -6520,7 +6601,7 @@ static int yaffs_ScanBackwards(yaffs_Dev
+ }
+
+ }
+-
++
+ }
+
+ } /* End of scanning for each chunk */
+@@ -6541,72 +6622,128 @@ static int yaffs_ScanBackwards(yaffs_Dev
+
+ }
+
+- if (altBlockIndex)
++ if (altBlockIndex)
+ YFREE_ALT(blockIndex);
+ else
+ YFREE(blockIndex);
+-
++
+ /* Ok, we've done all the scanning.
+ * Fix up the hard link chains.
+- * We should now have scanned all the objects, now it's time to add these
++ * We should now have scanned all the objects, now it's time to add these
+ * hardlinks.
+ */
+ yaffs_HardlinkFixup(dev,hardList);
++
+
++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++
++ if(alloc_failed){
++ return YAFFS_FAIL;
++ }
+
+- /*
+- * Sort out state of unlinked and deleted objects.
+- */
+- {
+- struct list_head *i;
+- struct list_head *n;
++ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
+
+- yaffs_Object *l;
++ return YAFFS_OK;
++}
+
+- /* Soft delete all the unlinked files */
+- list_for_each_safe(i, n,
+- &dev->unlinkedDir->variant.directoryVariant.
+- children) {
+- if (i) {
+- l = list_entry(i, yaffs_Object, siblings);
+- yaffs_DestroyObject(l);
+- }
+- }
++/*------------------------------ Directory Functions ----------------------------- */
+
+- /* Soft delete all the deletedDir files */
+- list_for_each_safe(i, n,
+- &dev->deletedDir->variant.directoryVariant.
+- children) {
+- if (i) {
+- l = list_entry(i, yaffs_Object, siblings);
+- yaffs_DestroyObject(l);
++static void yaffs_VerifyObjectInDirectory(yaffs_Object *obj)
++{
++ struct ylist_head *lh;
++ yaffs_Object *listObj;
++
++ int count = 0;
+
+- }
+- }
++ if(!obj){
++ T(YAFFS_TRACE_ALWAYS, (TSTR("No object to verify" TENDSTR)));
++ YBUG();
+ }
+
+- yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++ if(yaffs_SkipVerification(obj->myDev))
++ return;
+
+- if(alloc_failed){
+- return YAFFS_FAIL;
++ if(!obj->parent){
++ T(YAFFS_TRACE_ALWAYS, (TSTR("Object does not have parent" TENDSTR)));
++ YBUG();
++ }
++
++ if(obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
++ T(YAFFS_TRACE_ALWAYS, (TSTR("Parent is not directory" TENDSTR)));
++ YBUG();
++ }
++
++ /* Iterate through the objects in each hash entry */
++
++ ylist_for_each(lh, &obj->parent->variant.directoryVariant.children) {
++ if (lh) {
++ listObj = ylist_entry(lh, yaffs_Object, siblings);
++ yaffs_VerifyObject(listObj);
++ if(obj == listObj)
++ count ++;
++ }
++ }
++
++ if(count != 1){
++ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory %d times" TENDSTR),count));
++ YBUG();
+ }
+
+- T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
++}
+
+- return YAFFS_OK;
++static void yaffs_VerifyDirectory(yaffs_Object *directory)
++{
++
++ struct ylist_head *lh;
++ yaffs_Object *listObj;
++
++ if(!directory)
++ YBUG();
++
++ if(yaffs_SkipFullVerification(directory->myDev))
++ return;
++
++
++ if(directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
++ T(YAFFS_TRACE_ALWAYS, (TSTR("Directory has wrong type: %d" TENDSTR),directory->variantType));
++ YBUG();
++ }
++
++ /* Iterate through the objects in each hash entry */
++
++ ylist_for_each(lh, &directory->variant.directoryVariant.children) {
++ if (lh) {
++ listObj = ylist_entry(lh, yaffs_Object, siblings);
++ if(listObj->parent != directory){
++ T(YAFFS_TRACE_ALWAYS, (TSTR("Object in directory list has wrong parent %p" TENDSTR),listObj->parent));
++ YBUG();
++ }
++ yaffs_VerifyObjectInDirectory(listObj);
++ }
++ }
++
+ }
+
+-/*------------------------------ Directory Functions ----------------------------- */
+
+ static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
+ {
+ yaffs_Device *dev = obj->myDev;
++ yaffs_Object *parent;
++
++ yaffs_VerifyObjectInDirectory(obj);
++ parent = obj->parent;
++
++ yaffs_VerifyDirectory(parent);
++
++ if(dev && dev->removeObjectCallback)
++ dev->removeObjectCallback(obj);
++
++
++ ylist_del_init(&obj->siblings);
++ obj->parent = NULL;
+
+- if(dev && dev->removeObjectCallback)
+- dev->removeObjectCallback(obj);
++ yaffs_VerifyDirectory(parent);
+
+- list_del_init(&obj->siblings);
+- obj->parent = NULL;
+ }
+
+
+@@ -6629,35 +6766,46 @@ static void yaffs_AddObjectToDirectory(y
+ YBUG();
+ }
+
+- if (obj->siblings.prev == NULL) {
+- /* Not initialised */
+- INIT_LIST_HEAD(&obj->siblings);
+-
+- } else if (!list_empty(&obj->siblings)) {
+- /* If it is holed up somewhere else, un hook it */
+- yaffs_RemoveObjectFromDirectory(obj);
+- }
+- /* Now add it */
+- list_add(&obj->siblings, &directory->variant.directoryVariant.children);
+- obj->parent = directory;
++ if (obj->siblings.prev == NULL) {
++ /* Not initialised */
++ YBUG();
++
++ } else if (ylist_empty(&obj->siblings)) {
++ YBUG();
++ }
++
+
+- if (directory == obj->myDev->unlinkedDir
++ yaffs_VerifyDirectory(directory);
++
++ yaffs_RemoveObjectFromDirectory(obj);
++
++
++ /* Now add it */
++ ylist_add(&obj->siblings, &directory->variant.directoryVariant.children);
++ obj->parent = directory;
++
++ if (directory == obj->myDev->unlinkedDir
+ || directory == obj->myDev->deletedDir) {
+ obj->unlinked = 1;
+ obj->myDev->nUnlinkedFiles++;
+ obj->renameAllowed = 0;
+ }
++
++ yaffs_VerifyDirectory(directory);
++ yaffs_VerifyObjectInDirectory(obj);
++
++
+ }
+
+ yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory,
+ const YCHAR * name)
+ {
+- int sum;
++ int sum;
+
+- struct list_head *i;
+- YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
++ struct ylist_head *i;
++ YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
+
+- yaffs_Object *l;
++ yaffs_Object *l;
+
+ if (!name) {
+ return NULL;
+@@ -6677,22 +6825,24 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+ YBUG();
+ }
+
+- sum = yaffs_CalcNameSum(name);
++ sum = yaffs_CalcNameSum(name);
+
+- list_for_each(i, &directory->variant.directoryVariant.children) {
+- if (i) {
+- l = list_entry(i, yaffs_Object, siblings);
+-
+- yaffs_CheckObjectDetailsLoaded(l);
++ ylist_for_each(i, &directory->variant.directoryVariant.children) {
++ if (i) {
++ l = ylist_entry(i, yaffs_Object, siblings);
++
++ if(l->parent != directory)
++ YBUG();
++
++ yaffs_CheckObjectDetailsLoaded(l);
+
+ /* Special case for lost-n-found */
+ if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
+ if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) {
+ return l;
+ }
+- } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
+- {
+- /* LostnFound cunk called Objxxx
++ } else if (yaffs_SumCompare(l->sum, sum) || l->hdrChunk <= 0){
++ /* LostnFound chunk called Objxxx
+ * Do a real check
+ */
+ yaffs_GetObjectName(l, buffer,
+@@ -6711,12 +6861,12 @@ yaffs_Object *yaffs_FindObjectByName(yaf
+
+ #if 0
+ int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
+- int (*fn) (yaffs_Object *))
++ int (*fn) (yaffs_Object *))
+ {
+- struct list_head *i;
+- yaffs_Object *l;
++ struct ylist_head *i;
++ yaffs_Object *l;
+
+- if (!theDir) {
++ if (!theDir) {
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR
+ ("tragedy: yaffs_FindObjectByName: null pointer directory"
+@@ -6727,15 +6877,15 @@ int yaffs_ApplyToDirectoryChildren(yaffs
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR
+ ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
+- YBUG();
+- }
++ YBUG();
++ }
+
+- list_for_each(i, &theDir->variant.directoryVariant.children) {
+- if (i) {
+- l = list_entry(i, yaffs_Object, siblings);
+- if (l && !fn(l)) {
+- return YAFFS_FAIL;
+- }
++ ylist_for_each(i, &theDir->variant.directoryVariant.children) {
++ if (i) {
++ l = ylist_entry(i, yaffs_Object, siblings);
++ if (l && !fn(l)) {
++ return YAFFS_FAIL;
++ }
+ }
+ }
+
+@@ -6762,16 +6912,25 @@ yaffs_Object *yaffs_GetEquivalentObject(
+ int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize)
+ {
+ memset(name, 0, buffSize * sizeof(YCHAR));
+-
++
+ yaffs_CheckObjectDetailsLoaded(obj);
+
+ if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
+ yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
+- } else if (obj->chunkId <= 0) {
++ } else if (obj->hdrChunk <= 0) {
+ YCHAR locName[20];
++ YCHAR numString[20];
++ YCHAR *x = &numString[19];
++ unsigned v = obj->objectId;
++ numString[19] = 0;
++ while(v>0){
++ x--;
++ *x = '0' + (v % 10);
++ v /= 10;
++ }
+ /* make up a name */
+- yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX,
+- obj->objectId);
++ yaffs_strcpy(locName, YAFFS_LOSTNFOUND_PREFIX);
++ yaffs_strcat(locName,x);
+ yaffs_strncpy(name, locName, buffSize - 1);
+
+ }
+@@ -6788,9 +6947,9 @@ int yaffs_GetObjectName(yaffs_Object * o
+
+ memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
+
+- if (obj->chunkId >= 0) {
++ if (obj->hdrChunk > 0) {
+ result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
+- obj->chunkId, buffer,
++ obj->hdrChunk, buffer,
+ NULL);
+ }
+ yaffs_strncpy(name, oh->name, buffSize - 1);
+@@ -6820,16 +6979,16 @@ int yaffs_GetObjectFileLength(yaffs_Obje
+
+ int yaffs_GetObjectLinkCount(yaffs_Object * obj)
+ {
+- int count = 0;
+- struct list_head *i;
++ int count = 0;
++ struct ylist_head *i;
+
+- if (!obj->unlinked) {
+- count++; /* the object itself */
+- }
+- list_for_each(i, &obj->hardLinks) {
+- count++; /* add the hard links; */
+- }
+- return count;
++ if (!obj->unlinked) {
++ count++; /* the object itself */
++ }
++ ylist_for_each(i, &obj->hardLinks) {
++ count++; /* add the hard links; */
++ }
++ return count;
+
+ }
+
+@@ -6951,7 +7110,7 @@ int yaffs_DumpObject(yaffs_Object * obj)
+ ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
+ " chunk %d type %d size %d\n"
+ TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
+- obj->dirty, obj->valid, obj->serial, obj->sum, obj->chunkId,
++ obj->dirty, obj->valid, obj->serial, obj->sum, obj->hdrChunk,
+ yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
+
+ return YAFFS_OK;
+@@ -6994,13 +7153,13 @@ static int yaffs_CheckDevFunctions(const
+ static int yaffs_CreateInitialDirectories(yaffs_Device *dev)
+ {
+ /* Initialise the unlinked, deleted, root and lost and found directories */
+-
++
+ dev->lostNFoundDir = dev->rootDir = NULL;
+ dev->unlinkedDir = dev->deletedDir = NULL;
+
+ dev->unlinkedDir =
+ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
+-
++
+ dev->deletedDir =
+ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
+
+@@ -7010,12 +7169,12 @@ static int yaffs_CreateInitialDirectorie
+ dev->lostNFoundDir =
+ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
+ YAFFS_LOSTNFOUND_MODE | S_IFDIR);
+-
++
+ if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){
+ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
+ return YAFFS_OK;
+ }
+-
++
+ return YAFFS_FAIL;
+ }
+
+@@ -7039,6 +7198,8 @@ int yaffs_GutsInitialise(yaffs_Device *
+ dev->blockOffset = 0;
+ dev->chunkOffset = 0;
+ dev->nFreeChunks = 0;
++
++ dev->gcBlock = -1;
+
+ if (dev->startBlock == 0) {
+ dev->internalStartBlock = dev->startBlock + 1;
+@@ -7049,18 +7210,19 @@ int yaffs_GutsInitialise(yaffs_Device *
+
+ /* Check geometry parameters. */
+
+- if ((dev->isYaffs2 && dev->nDataBytesPerChunk < 1024) ||
+- (!dev->isYaffs2 && dev->nDataBytesPerChunk != 512) ||
+- dev->nChunksPerBlock < 2 ||
+- dev->nReservedBlocks < 2 ||
+- dev->internalStartBlock <= 0 ||
+- dev->internalEndBlock <= 0 ||
++ if ((!dev->inbandTags && dev->isYaffs2 && dev->totalBytesPerChunk < 1024) ||
++ (!dev->isYaffs2 && dev->totalBytesPerChunk < 512) ||
++ (dev->inbandTags && !dev->isYaffs2 ) ||
++ dev->nChunksPerBlock < 2 ||
++ dev->nReservedBlocks < 2 ||
++ dev->internalStartBlock <= 0 ||
++ dev->internalEndBlock <= 0 ||
+ dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2) // otherwise it is too small
+ ) {
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR
+- ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s "
+- TENDSTR), dev->nDataBytesPerChunk, dev->isYaffs2 ? "2" : ""));
++ ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s, inbandTags %d "
++ TENDSTR), dev->totalBytesPerChunk, dev->isYaffs2 ? "2" : "", dev->inbandTags));
+ return YAFFS_FAIL;
+ }
+
+@@ -7069,6 +7231,12 @@ int yaffs_GutsInitialise(yaffs_Device *
+ (TSTR("yaffs: InitialiseNAND failed" TENDSTR)));
+ return YAFFS_FAIL;
+ }
++
++ /* Sort out space for inband tags, if required */
++ if(dev->inbandTags)
++ dev->nDataBytesPerChunk = dev->totalBytesPerChunk - sizeof(yaffs_PackedTags2TagsPart);
++ else
++ dev->nDataBytesPerChunk = dev->totalBytesPerChunk;
+
+ /* Got the right mix of functions? */
+ if (!yaffs_CheckDevFunctions(dev)) {
+@@ -7097,41 +7265,28 @@ int yaffs_GutsInitialise(yaffs_Device *
+
+ dev->isMounted = 1;
+
+-
+-
+ /* OK now calculate a few things for the device */
+-
++
+ /*
+- * Calculate all the chunk size manipulation numbers:
++ * Calculate all the chunk size manipulation numbers:
+ */
+- /* Start off assuming it is a power of 2 */
+- dev->chunkShift = ShiftDiv(dev->nDataBytesPerChunk);
+- dev->chunkMask = (1<<dev->chunkShift) - 1;
+-
+- if(dev->nDataBytesPerChunk == (dev->chunkMask + 1)){
+- /* Yes it is a power of 2, disable crumbs */
+- dev->crumbMask = 0;
+- dev->crumbShift = 0;
+- dev->crumbsPerChunk = 0;
+- } else {
+- /* Not a power of 2, use crumbs instead */
+- dev->crumbShift = ShiftDiv(sizeof(yaffs_PackedTags2TagsPart));
+- dev->crumbMask = (1<<dev->crumbShift)-1;
+- dev->crumbsPerChunk = dev->nDataBytesPerChunk/(1 << dev->crumbShift);
+- dev->chunkShift = 0;
+- dev->chunkMask = 0;
+- }
+-
+-
++ x = dev->nDataBytesPerChunk;
++ /* We always use dev->chunkShift and dev->chunkDiv */
++ dev->chunkShift = Shifts(x);
++ x >>= dev->chunkShift;
++ dev->chunkDiv = x;
++ /* We only use chunk mask if chunkDiv is 1 */
++ dev->chunkMask = (1<<dev->chunkShift) - 1;
++
+ /*
+ * Calculate chunkGroupBits.
+ * We need to find the next power of 2 > than internalEndBlock
+ */
+
+ x = dev->nChunksPerBlock * (dev->internalEndBlock + 1);
+-
++
+ bits = ShiftsGE(x);
+-
++
+ /* Set up tnode width if wide tnodes are enabled. */
+ if(!dev->wideTnodesDisabled){
+ /* bits must be even so that we end up with 32-bit words */
+@@ -7144,20 +7299,20 @@ int yaffs_GutsInitialise(yaffs_Device *
+ }
+ else
+ dev->tnodeWidth = 16;
+-
++
+ dev->tnodeMask = (1<<dev->tnodeWidth)-1;
+-
++
+ /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
+ * so if the bitwidth of the
+ * chunk range we're using is greater than 16 we need
+ * to figure out chunk shift and chunkGroupSize
+ */
+-
++
+ if (bits <= dev->tnodeWidth)
+ dev->chunkGroupBits = 0;
+ else
+ dev->chunkGroupBits = bits - dev->tnodeWidth;
+-
++
+
+ dev->chunkGroupSize = 1 << dev->chunkGroupBits;
+
+@@ -7195,40 +7350,42 @@ int yaffs_GutsInitialise(yaffs_Device *
+ /* Initialise temporary buffers and caches. */
+ if(!yaffs_InitialiseTempBuffers(dev))
+ init_failed = 1;
+-
++
+ dev->srCache = NULL;
+ dev->gcCleanupList = NULL;
+-
+-
++
++
+ if (!init_failed &&
+ dev->nShortOpCaches > 0) {
+ int i;
+- __u8 *buf;
++ void *buf;
+ int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache);
+
+ if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) {
+ dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
+ }
+
+- buf = dev->srCache = YMALLOC(srCacheBytes);
+-
++ dev->srCache = YMALLOC(srCacheBytes);
++
++ buf = (__u8 *) dev->srCache;
++
+ if(dev->srCache)
+ memset(dev->srCache,0,srCacheBytes);
+-
++
+ for (i = 0; i < dev->nShortOpCaches && buf; i++) {
+ dev->srCache[i].object = NULL;
+ dev->srCache[i].lastUse = 0;
+ dev->srCache[i].dirty = 0;
+- dev->srCache[i].data = buf = YMALLOC_DMA(dev->nDataBytesPerChunk);
++ dev->srCache[i].data = buf = YMALLOC_DMA(dev->totalBytesPerChunk);
+ }
+ if(!buf)
+ init_failed = 1;
+-
++
+ dev->srLastUse = 0;
+ }
+
+ dev->cacheHits = 0;
+-
++
+ if(!init_failed){
+ dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
+ if(!dev->gcCleanupList)
+@@ -7240,7 +7397,7 @@ int yaffs_GutsInitialise(yaffs_Device *
+ }
+ if(!init_failed && !yaffs_InitialiseBlocks(dev))
+ init_failed = 1;
+-
++
+ yaffs_InitialiseTnodes(dev);
+ yaffs_InitialiseObjects(dev);
+
+@@ -7252,18 +7409,19 @@ int yaffs_GutsInitialise(yaffs_Device *
+ /* Now scan the flash. */
+ if (dev->isYaffs2) {
+ if(yaffs_CheckpointRestore(dev)) {
++ yaffs_CheckObjectDetailsLoaded(dev->rootDir);
+ T(YAFFS_TRACE_ALWAYS,
+ (TSTR("yaffs: restored from checkpoint" TENDSTR)));
+ } else {
+
+- /* Clean up the mess caused by an aborted checkpoint load
+- * and scan backwards.
++ /* Clean up the mess caused by an aborted checkpoint load
++ * and scan backwards.
+ */
+ yaffs_DeinitialiseBlocks(dev);
+ yaffs_DeinitialiseTnodes(dev);
+ yaffs_DeinitialiseObjects(dev);
+-
+-
++
++
+ dev->nErasedBlocks = 0;
+ dev->nFreeChunks = 0;
+ dev->allocationBlock = -1;
+@@ -7275,7 +7433,7 @@ int yaffs_GutsInitialise(yaffs_Device *
+
+ if(!init_failed && !yaffs_InitialiseBlocks(dev))
+ init_failed = 1;
+-
++
+ yaffs_InitialiseTnodes(dev);
+ yaffs_InitialiseObjects(dev);
+
+@@ -7288,8 +7446,10 @@ int yaffs_GutsInitialise(yaffs_Device *
+ }else
+ if(!yaffs_Scan(dev))
+ init_failed = 1;
+- }
+
++ yaffs_StripDeletedObjects(dev);
++ }
++
+ if(init_failed){
+ /* Clean up the mess */
+ T(YAFFS_TRACE_TRACING,
+@@ -7310,7 +7470,7 @@ int yaffs_GutsInitialise(yaffs_Device *
+
+ yaffs_VerifyFreeChunks(dev);
+ yaffs_VerifyBlocks(dev);
+-
++
+
+ T(YAFFS_TRACE_TRACING,
+ (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
+@@ -7345,7 +7505,11 @@ void yaffs_Deinitialise(yaffs_Device * d
+ YFREE(dev->tempBuffer[i].buffer);
+ }
+
++
+ dev->isMounted = 0;
++
++ if(dev->deinitialiseNAND)
++ dev->deinitialiseNAND(dev);
+ }
+
+ }
+@@ -7394,7 +7558,7 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+ #endif
+
+ nFree += dev->nDeletedFiles;
+-
++
+ /* Now count the number of dirty chunks in the cache and subtract those */
+
+ {
+@@ -7408,12 +7572,12 @@ int yaffs_GetNumberOfFreeChunks(yaffs_De
+ nFree -= nDirtyCacheChunks;
+
+ nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
+-
++
+ /* Now we figure out how much to reserve for the checkpoint and report that... */
+- blocksForCheckpoint = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
++ blocksForCheckpoint = yaffs_CalcCheckpointBlocksRequired(dev) - dev->blocksInCheckpoint;
+ if(blocksForCheckpoint < 0)
+ blocksForCheckpoint = 0;
+-
++
+ nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
+
+ if (nFree < 0)
+@@ -7429,10 +7593,10 @@ static void yaffs_VerifyFreeChunks(yaffs
+ {
+ int counted;
+ int difference;
+-
++
+ if(yaffs_SkipVerification(dev))
+ return;
+-
++
+ counted = yaffs_CountFreeChunks(dev);
+
+ difference = dev->nFreeChunks - counted;
+@@ -7448,22 +7612,25 @@ static void yaffs_VerifyFreeChunks(yaffs
+ /*---------------------------------------- YAFFS test code ----------------------*/
+
+ #define yaffs_CheckStruct(structure,syze, name) \
++ do { \
+ if(sizeof(structure) != syze) \
+ { \
+ T(YAFFS_TRACE_ALWAYS,(TSTR("%s should be %d but is %d\n" TENDSTR),\
+ name,syze,sizeof(structure))); \
+ return YAFFS_FAIL; \
+- }
++ } \
++ } while(0)
+
+ static int yaffs_CheckStructures(void)
+ {
+-/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags") */
+-/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion") */
+-/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare") */
++/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags"); */
++/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion"); */
++/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare"); */
+ #ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
+- yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode")
++ yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode");
++#endif
++#ifndef CONFIG_YAFFS_WINCE
++ yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader");
+ #endif
+- yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader")
+-
+ return YAFFS_OK;
+ }
+--- a/fs/yaffs2/yaffs_mtdif1.c
++++ b/fs/yaffs2/yaffs_mtdif1.c
+@@ -34,9 +34,9 @@
+ #include "linux/mtd/mtd.h"
+
+ /* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+
+-const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $";
++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.8 2008-07-23 03:35:12 charles Exp $";
+
+ #ifndef CONFIG_YAFFS_9BYTE_TAGS
+ # define YTAG1_SIZE 8
+@@ -189,7 +189,7 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+ ops.datbuf = data;
+ ops.oobbuf = (__u8 *)&pt1;
+
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
++#if (MTD_VERSION_CODE < MTD_VERSION(2,6,20))
+ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
+ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
+ */
+@@ -288,7 +288,7 @@ int nandmtd1_MarkNANDBlockBad(struct yaf
+ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
+ int retval;
+
+- yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad\n", blockNo);
+
+ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
+ return (retval) ? YAFFS_FAIL : YAFFS_OK;
+@@ -323,10 +323,11 @@ static int nandmtd1_TestPrerequists(stru
+ * Always returns YAFFS_OK.
+ */
+ int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+- yaffs_BlockState * pState, int *pSequenceNumber)
++ yaffs_BlockState * pState, __u32 *pSequenceNumber)
+ {
+ struct mtd_info * mtd = dev->genericDevice;
+ int chunkNo = blockNo * dev->nChunksPerBlock;
++ loff_t addr = (loff_t)chunkNo * dev->nDataBytesPerChunk;
+ yaffs_ExtendedTags etags;
+ int state = YAFFS_BLOCK_STATE_DEAD;
+ int seqnum = 0;
+@@ -340,11 +341,16 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+ }
+
+ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
++ etags.blockBad = (mtd->block_isbad)(mtd, addr);
+ if (etags.blockBad) {
+ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
+- "block %d is marked bad", blockNo);
++ "block %d is marked bad\n", blockNo);
+ state = YAFFS_BLOCK_STATE_DEAD;
+ }
++ else if (etags.eccResult != YAFFS_ECC_RESULT_NO_ERROR) {
++ /* bad tags, need to look more closely */
++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
++ }
+ else if (etags.chunkUsed) {
+ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
+ seqnum = etags.sequenceNumber;
+@@ -360,4 +366,4 @@ int nandmtd1_QueryNANDBlock(struct yaffs
+ return YAFFS_OK;
+ }
+
+-#endif /*KERNEL_VERSION*/
++#endif /*MTD_VERSION*/
+--- a/fs/yaffs2/yaffs_mtdif2.c
++++ b/fs/yaffs2/yaffs_mtdif2.c
+@@ -14,7 +14,7 @@
+ /* mtd interface for YAFFS2 */
+
+ const char *yaffs_mtdif2_c_version =
+- "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $";
++ "$Id: yaffs_mtdif2.c,v 1.22 2008-11-02 22:47:13 charles Exp $";
+
+ #include "yportenv.h"
+
+@@ -27,19 +27,23 @@ const char *yaffs_mtdif2_c_version =
+
+ #include "yaffs_packedtags2.h"
+
++/* NB For use with inband tags....
++ * We assume that the data buffer is of size totalBytersPerChunk so that we can also
++ * use it to load the tags.
++ */
+ int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
+ const __u8 * data,
+ const yaffs_ExtendedTags * tags)
+ {
+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ struct mtd_oob_ops ops;
+ #else
+ size_t dummy;
+ #endif
+ int retval = 0;
+
+- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++ loff_t addr;
+
+ yaffs_PackedTags2 pt;
+
+@@ -47,47 +51,42 @@ int nandmtd2_WriteChunkWithTagsToNAND(ya
+ (TSTR
+ ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
+ TENDSTR), chunkInNAND, data, tags));
++
+
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+- if (tags)
+- yaffs_PackTags2(&pt, tags);
++ addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
++
++ /* For yaffs2 writing there must be both data and tags.
++ * If we're using inband tags, then the tags are stuffed into
++ * the end of the data buffer.
++ */
++ if(!data || !tags)
++ BUG();
++ else if(dev->inbandTags){
++ yaffs_PackedTags2TagsPart *pt2tp;
++ pt2tp = (yaffs_PackedTags2TagsPart *)(data + dev->nDataBytesPerChunk);
++ yaffs_PackTags2TagsPart(pt2tp,tags);
++ }
+ else
+- BUG(); /* both tags and data should always be present */
+-
+- if (data) {
+- ops.mode = MTD_OOB_AUTO;
+- ops.ooblen = sizeof(pt);
+- ops.len = dev->nDataBytesPerChunk;
+- ops.ooboffs = 0;
+- ops.datbuf = (__u8 *)data;
+- ops.oobbuf = (void *)&pt;
+- retval = mtd->write_oob(mtd, addr, &ops);
+- } else
+- BUG(); /* both tags and data should always be present */
+-#else
+- if (tags) {
+ yaffs_PackTags2(&pt, tags);
+- }
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ ops.mode = MTD_OOB_AUTO;
++ ops.ooblen = (dev->inbandTags) ? 0 : sizeof(pt);
++ ops.len = dev->totalBytesPerChunk;
++ ops.ooboffs = 0;
++ ops.datbuf = (__u8 *)data;
++ ops.oobbuf = (dev->inbandTags) ? NULL : (void *)&pt;
++ retval = mtd->write_oob(mtd, addr, &ops);
+
+- if (data && tags) {
+- if (dev->useNANDECC)
+- retval =
+- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+- &dummy, data, (__u8 *) & pt, NULL);
+- else
+- retval =
+- mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
+- &dummy, data, (__u8 *) & pt, NULL);
++#else
++ if (!dev->inbandTags) {
++ retval =
++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, (__u8 *) & pt, NULL);
+ } else {
+- if (data)
+- retval =
+- mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+- data);
+- if (tags)
+- retval =
+- mtd->write_oob(mtd, addr, mtd->oobsize, &dummy,
+- (__u8 *) & pt);
+-
++ retval =
++ mtd->write(mtd, addr, dev->totalBytesPerChunk, &dummy,
++ data);
+ }
+ #endif
+
+@@ -101,13 +100,14 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ __u8 * data, yaffs_ExtendedTags * tags)
+ {
+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ struct mtd_oob_ops ops;
+ #endif
+ size_t dummy;
+ int retval = 0;
++ int localData = 0;
+
+- loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++ loff_t addr = ((loff_t) chunkInNAND) * dev->totalBytesPerChunk;
+
+ yaffs_PackedTags2 pt;
+
+@@ -115,10 +115,21 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ (TSTR
+ ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
+ TENDSTR), chunkInNAND, data, tags));
++
++ if(dev->inbandTags){
++
++ if(!data) {
++ localData = 1;
++ data = yaffs_GetTempBuffer(dev,__LINE__);
++ }
++
++
++ }
++
+
+ #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
+- if (data && !tags)
+- retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
++ if (dev->inbandTags || (data && !tags))
++ retval = mtd->read(mtd, addr, dev->totalBytesPerChunk,
+ &dummy, data);
+ else if (tags) {
+ ops.mode = MTD_OOB_AUTO;
+@@ -130,38 +141,43 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ retval = mtd->read_oob(mtd, addr, &ops);
+ }
+ #else
+- if (data && tags) {
+- if (dev->useNANDECC) {
+- retval =
+- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+- &dummy, data, dev->spareBuffer,
+- NULL);
+- } else {
+- retval =
+- mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ if (!dev->inbandTags && data && tags) {
++
++ retval = mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
+ &dummy, data, dev->spareBuffer,
+ NULL);
+- }
+ } else {
+ if (data)
+ retval =
+ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
+ data);
+- if (tags)
++ if (!dev->inbandTags && tags)
+ retval =
+ mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
+ dev->spareBuffer);
+ }
+ #endif
+
+- memcpy(&pt, dev->spareBuffer, sizeof(pt));
+
+- if (tags)
+- yaffs_UnpackTags2(tags, &pt);
++ if(dev->inbandTags){
++ if(tags){
++ yaffs_PackedTags2TagsPart * pt2tp;
++ pt2tp = (yaffs_PackedTags2TagsPart *)&data[dev->nDataBytesPerChunk];
++ yaffs_UnpackTags2TagsPart(tags,pt2tp);
++ }
++ }
++ else {
++ if (tags){
++ memcpy(&pt, dev->spareBuffer, sizeof(pt));
++ yaffs_UnpackTags2(tags, &pt);
++ }
++ }
+
++ if(localData)
++ yaffs_ReleaseTempBuffer(dev,data,__LINE__);
++
+ if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
+- tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
+-
++ tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
+ if (retval == 0)
+ return YAFFS_OK;
+ else
+@@ -178,7 +194,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+ retval =
+ mtd->block_markbad(mtd,
+ blockNo * dev->nChunksPerBlock *
+- dev->nDataBytesPerChunk);
++ dev->totalBytesPerChunk);
+
+ if (retval == 0)
+ return YAFFS_OK;
+@@ -188,7 +204,7 @@ int nandmtd2_MarkNANDBlockBad(struct yaf
+ }
+
+ int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+- yaffs_BlockState * state, int *sequenceNumber)
++ yaffs_BlockState * state, __u32 *sequenceNumber)
+ {
+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+ int retval;
+@@ -198,7 +214,7 @@ int nandmtd2_QueryNANDBlock(struct yaffs
+ retval =
+ mtd->block_isbad(mtd,
+ blockNo * dev->nChunksPerBlock *
+- dev->nDataBytesPerChunk);
++ dev->totalBytesPerChunk);
+
+ if (retval) {
+ T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
+--- a/fs/yaffs2/yaffs_guts.h
++++ b/fs/yaffs2/yaffs_guts.h
+@@ -1,5 +1,5 @@
+ /*
+- * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
+ *
+ * Copyright (C) 2002-2007 Aleph One Ltd.
+ * for Toby Churchill Ltd and Brightstar Engineering
+@@ -22,11 +22,11 @@
+ #define YAFFS_OK 1
+ #define YAFFS_FAIL 0
+
+-/* Give us a Y=0x59,
+- * Give us an A=0x41,
+- * Give us an FF=0xFF
++/* Give us a Y=0x59,
++ * Give us an A=0x41,
++ * Give us an FF=0xFF
+ * Give us an S=0x53
+- * And what have we got...
++ * And what have we got...
+ */
+ #define YAFFS_MAGIC 0x5941FF53
+
+@@ -90,7 +90,7 @@
+
+ #define YAFFS_MAX_SHORT_OP_CACHES 20
+
+-#define YAFFS_N_TEMP_BUFFERS 4
++#define YAFFS_N_TEMP_BUFFERS 6
+
+ /* We limit the number attempts at sucessfully saving a chunk of data.
+ * Small-page devices have 32 pages per block; large-page devices have 64.
+@@ -102,7 +102,7 @@
+ * The range is limited slightly to help distinguish bad numbers from good.
+ * This also allows us to perhaps in the future use special numbers for
+ * special purposes.
+- * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years,
++ * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years,
+ * and is a larger number than the lifetime of a 2GB device.
+ */
+ #define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000
+@@ -132,12 +132,12 @@ typedef struct {
+
+ #ifndef CONFIG_YAFFS_NO_YAFFS1
+ typedef struct {
+- unsigned chunkId:20;
+- unsigned serialNumber:2;
+- unsigned byteCount:10;
+- unsigned objectId:18;
+- unsigned ecc:12;
+- unsigned unusedStuff:2;
++ unsigned chunkId:20;
++ unsigned serialNumber:2;
++ unsigned byteCountLSB:10;
++ unsigned objectId:18;
++ unsigned ecc:12;
++ unsigned byteCountMSB:2;
+
+ } yaffs_Tags;
+
+@@ -178,7 +178,7 @@ typedef struct {
+
+ /* The following stuff only has meaning when we read */
+ yaffs_ECCResult eccResult;
+- unsigned blockBad;
++ unsigned blockBad;
+
+ /* YAFFS 1 stuff */
+ unsigned chunkDeleted; /* The chunk is marked deleted */
+@@ -244,29 +244,29 @@ typedef enum {
+ /* This block is empty */
+
+ YAFFS_BLOCK_STATE_ALLOCATING,
+- /* This block is partially allocated.
++ /* This block is partially allocated.
+ * At least one page holds valid data.
+ * This is the one currently being used for page
+ * allocation. Should never be more than one of these
+ */
+
+- YAFFS_BLOCK_STATE_FULL,
++ YAFFS_BLOCK_STATE_FULL,
+ /* All the pages in this block have been allocated.
+ */
+
+ YAFFS_BLOCK_STATE_DIRTY,
+- /* All pages have been allocated and deleted.
++ /* All pages have been allocated and deleted.
+ * Erase me, reuse me.
+ */
+
+- YAFFS_BLOCK_STATE_CHECKPOINT,
++ YAFFS_BLOCK_STATE_CHECKPOINT,
+ /* This block is assigned to holding checkpoint data.
+ */
+
+- YAFFS_BLOCK_STATE_COLLECTING,
++ YAFFS_BLOCK_STATE_COLLECTING,
+ /* This block is being garbage collected */
+
+- YAFFS_BLOCK_STATE_DEAD
++ YAFFS_BLOCK_STATE_DEAD
+ /* This block has failed and is not in use */
+ } yaffs_BlockState;
+
+@@ -277,11 +277,11 @@ typedef struct {
+
+ int softDeletions:10; /* number of soft deleted pages */
+ int pagesInUse:10; /* number of pages in use */
+- yaffs_BlockState blockState:4; /* One of the above block states */
++ unsigned blockState:4; /* One of the above block states. NB use unsigned because enum is sometimes an int */
+ __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */
+ /* and retire the block. */
+ __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
+- __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block.
++ __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block.
+ It should be prioritised for GC */
+ __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
+
+@@ -300,11 +300,11 @@ typedef struct {
+
+ /* Apply to everything */
+ int parentObjectId;
+- __u16 sum__NoLongerUsed; /* checksum of name. No longer used */
+- YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
++ __u16 sum__NoLongerUsed; /* checksum of name. No longer used */
++ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
+
+- /* Thes following apply to directories, files, symlinks - not hard links */
+- __u32 yst_mode; /* protection */
++ /* The following apply to directories, files, symlinks - not hard links */
++ __u32 yst_mode; /* protection */
+
+ #ifdef CONFIG_YAFFS_WINCE
+ __u32 notForWinCE[5];
+@@ -331,11 +331,14 @@ typedef struct {
+ __u32 win_ctime[2];
+ __u32 win_atime[2];
+ __u32 win_mtime[2];
+- __u32 roomToGrow[4];
+ #else
+- __u32 roomToGrow[10];
++ __u32 roomToGrow[6];
++
+ #endif
++ __u32 inbandShadowsObject;
++ __u32 inbandIsShrink;
+
++ __u32 reservedSpace[2];
+ int shadowsObject; /* This object header shadows the specified object if > 0 */
+
+ /* isShrink applies to object headers written when we shrink the file (ie resize) */
+@@ -381,7 +384,7 @@ typedef struct {
+ } yaffs_FileStructure;
+
+ typedef struct {
+- struct list_head children; /* list of child links */
++ struct ylist_head children; /* list of child links */
+ } yaffs_DirectoryStructure;
+
+ typedef struct {
+@@ -408,7 +411,7 @@ struct yaffs_ObjectStruct {
+ __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */
+ __u8 unlinkAllowed:1;
+ __u8 dirty:1; /* the object needs to be written to flash */
+- __u8 valid:1; /* When the file system is being loaded up, this
++ __u8 valid:1; /* When the file system is being loaded up, this
+ * object might be created before the data
+ * is available (ie. file data records appear before the header).
+ */
+@@ -417,33 +420,36 @@ struct yaffs_ObjectStruct {
+ __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is
+ * still in the inode cache. Free of object is defered.
+ * until the inode is released.
+- */
++ */
++ __u8 beingCreated:1; /* This object is still being created so skip some checks. */
+
+- __u8 serial; /* serial number of chunk in NAND. Cached here */
+- __u16 sum; /* sum of the name to speed searching */
++ __u8 serial; /* serial number of chunk in NAND. Cached here */
++/* __u16 sum_prev; */
++ __u16 sum; /* sum of the name to speed searching */
++/* __u16 sum_trailer; */
+
+- struct yaffs_DeviceStruct *myDev; /* The device I'm on */
++ struct yaffs_DeviceStruct *myDev; /* The device I'm on */
+
+- struct list_head hashLink; /* list of objects in this hash bucket */
++ struct ylist_head hashLink; /* list of objects in this hash bucket */
+
+- struct list_head hardLinks; /* all the equivalent hard linked objects */
++ struct ylist_head hardLinks; /* all the equivalent hard linked objects */
+
+- /* directory structure stuff */
+- /* also used for linking up the free list */
+- struct yaffs_ObjectStruct *parent;
+- struct list_head siblings;
++ /* directory structure stuff */
++ /* also used for linking up the free list */
++ struct yaffs_ObjectStruct *parent;
++ struct ylist_head siblings;
+
+ /* Where's my object header in NAND? */
+- int chunkId;
++ int hdrChunk;
+
+ int nDataChunks; /* Number of data chunks attached to the file. */
+
+ __u32 objectId; /* the object id value */
+
+- __u32 yst_mode;
++ __u32 yst_mode;
+
+ #ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
+- YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1];
++ YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1];
+ #endif
+
+ #ifndef __KERNEL__
+@@ -485,31 +491,30 @@ struct yaffs_ObjectList_struct {
+ typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
+
+ typedef struct {
+- struct list_head list;
+- int count;
++ struct ylist_head list;
++ int count;
+ } yaffs_ObjectBucket;
+
+
+-/* yaffs_CheckpointObject holds the definition of an object as dumped
++/* yaffs_CheckpointObject holds the definition of an object as dumped
+ * by checkpointing.
+ */
+
+ typedef struct {
+ int structType;
+- __u32 objectId;
++ __u32 objectId;
+ __u32 parentId;
+- int chunkId;
+-
++ int hdrChunk;
+ yaffs_ObjectType variantType:3;
+- __u8 deleted:1;
+- __u8 softDeleted:1;
+- __u8 unlinked:1;
+- __u8 fake:1;
++ __u8 deleted:1;
++ __u8 softDeleted:1;
++ __u8 unlinked:1;
++ __u8 fake:1;
+ __u8 renameAllowed:1;
+ __u8 unlinkAllowed:1;
+- __u8 serial;
+-
+- int nDataChunks;
++ __u8 serial;
++
++ int nDataChunks;
+ __u32 fileSizeOrEquivalentObjectId;
+
+ }yaffs_CheckpointObject;
+@@ -528,25 +533,25 @@ typedef struct {
+ /*----------------- Device ---------------------------------*/
+
+ struct yaffs_DeviceStruct {
+- struct list_head devList;
+- const char *name;
++ struct ylist_head devList;
++ const char *name;
+
+- /* Entry parameters set up way early. Yaffs sets up the rest.*/
+- int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
+- int nChunksPerBlock; /* does not need to be a power of 2 */
+- int nBytesPerSpare; /* spare area size */
+- int startBlock; /* Start block we're allowed to use */
+- int endBlock; /* End block we're allowed to use */
+- int nReservedBlocks; /* We want this tuneable so that we can reduce */
++ /* Entry parameters set up way early. Yaffs sets up the rest.*/
++ int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
++ int nChunksPerBlock; /* does not need to be a power of 2 */
++ int spareBytesPerChunk;/* spare area size */
++ int startBlock; /* Start block we're allowed to use */
++ int endBlock; /* End block we're allowed to use */
++ int nReservedBlocks; /* We want this tuneable so that we can reduce */
+ /* reserved blocks on NOR and RAM. */
+-
+-
++
++
+ /* Stuff used by the shared space checkpointing mechanism */
+ /* If this value is zero, then this mechanism is disabled */
++
++// int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
+
+- int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
+-
+-
++
+
+
+ int nShortOpCaches; /* If <= 0, then short op caching is disabled, else
+@@ -561,7 +566,7 @@ struct yaffs_DeviceStruct {
+ * On an mtd this holds the mtd pointer.
+ */
+ void *superBlock;
+-
++
+ /* NAND access functions (Must be set before calling YAFFS)*/
+
+ int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
+@@ -570,12 +575,13 @@ struct yaffs_DeviceStruct {
+ int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev,
+ int chunkInNAND, __u8 * data,
+ yaffs_Spare * spare);
+- int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
+- int blockInNAND);
+- int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
++ int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
++ int blockInNAND);
++ int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
++ int (*deinitialiseNAND) (struct yaffs_DeviceStruct * dev);
+
+ #ifdef CONFIG_YAFFS_YAFFS2
+- int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev,
++ int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev,
+ int chunkInNAND, const __u8 * data,
+ const yaffs_ExtendedTags * tags);
+ int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct * dev,
+@@ -583,25 +589,27 @@ struct yaffs_DeviceStruct {
+ yaffs_ExtendedTags * tags);
+ int (*markNANDBlockBad) (struct yaffs_DeviceStruct * dev, int blockNo);
+ int (*queryNANDBlock) (struct yaffs_DeviceStruct * dev, int blockNo,
+- yaffs_BlockState * state, int *sequenceNumber);
++ yaffs_BlockState * state, __u32 *sequenceNumber);
+ #endif
+
+ int isYaffs2;
+-
+- /* The removeObjectCallback function must be supplied by OS flavours that
++
++ /* The removeObjectCallback function must be supplied by OS flavours that
+ * need it. The Linux kernel does not use this, but yaffs direct does use
+ * it to implement the faster readdir
+ */
+ void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
+-
++
+ /* Callback to mark the superblock dirsty */
+ void (*markSuperBlockDirty)(void * superblock);
+-
++
+ int wideTnodesDisabled; /* Set to disable wide tnodes */
+-
++
++ YCHAR *pathDividers; /* String of legal path dividers */
++
+
+ /* End of stuff that must be set before initialisation. */
+-
++
+ /* Checkpoint control. Can be set before or after initialisation */
+ __u8 skipCheckpointRead;
+ __u8 skipCheckpointWrite;
+@@ -610,34 +618,32 @@ struct yaffs_DeviceStruct {
+
+ __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */
+ __u16 chunkGroupSize; /* == 2^^chunkGroupBits */
+-
++
+ /* Stuff to support wide tnodes */
+ __u32 tnodeWidth;
+ __u32 tnodeMask;
+-
+- /* Stuff to support various file offses to chunk/offset translations */
+- /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
+- __u32 crumbMask;
+- __u32 crumbShift;
+- __u32 crumbsPerChunk;
+-
+- /* Straight shifting for nDataBytesPerChunk being a power of 2 */
+- __u32 chunkShift;
+- __u32 chunkMask;
+-
++
++ /* Stuff for figuring out file offset to chunk conversions */
++ __u32 chunkShift; /* Shift value */
++ __u32 chunkDiv; /* Divisor after shifting: 1 for power-of-2 sizes */
++ __u32 chunkMask; /* Mask to use for power-of-2 case */
++
++ /* Stuff to handle inband tags */
++ int inbandTags;
++ __u32 totalBytesPerChunk;
+
+ #ifdef __KERNEL__
+
+ struct semaphore sem; /* Semaphore for waiting on erasure.*/
+ struct semaphore grossLock; /* Gross locking semaphore */
+- __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer
++ __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer
+ * at compile time so we have to allocate it.
+ */
+ void (*putSuperFunc) (struct super_block * sb);
+ #endif
+
+ int isMounted;
+-
++
+ int isCheckpointed;
+
+
+@@ -646,7 +652,7 @@ struct yaffs_DeviceStruct {
+ int internalEndBlock;
+ int blockOffset;
+ int chunkOffset;
+-
++
+
+ /* Runtime checkpointing stuff */
+ int checkpointPageSequence; /* running sequence number of checkpoint pages */
+@@ -662,13 +668,15 @@ struct yaffs_DeviceStruct {
+ int checkpointMaxBlocks;
+ __u32 checkpointSum;
+ __u32 checkpointXor;
+-
++
++ int nCheckpointBlocksRequired; /* Number of blocks needed to store current checkpoint set */
++
+ /* Block Info */
+ yaffs_BlockInfo *blockInfo;
+ __u8 *chunkBits; /* bitmap of chunks in use */
+ unsigned blockInfoAlt:1; /* was allocated using alternative strategy */
+ unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */
+- int chunkBitmapStride; /* Number of bytes of chunkBits per block.
++ int chunkBitmapStride; /* Number of bytes of chunkBits per block.
+ * Must be consistent with nChunksPerBlock.
+ */
+
+@@ -684,10 +692,14 @@ struct yaffs_DeviceStruct {
+ yaffs_TnodeList *allocatedTnodeList;
+
+ int isDoingGC;
++ int gcBlock;
++ int gcChunk;
+
+ int nObjectsCreated;
+ yaffs_Object *freeObjects;
+ int nFreeObjects;
++
++ int nHardLinks;
+
+ yaffs_ObjectList *allocatedObjectList;
+
+@@ -716,7 +728,7 @@ struct yaffs_DeviceStruct {
+ int tagsEccUnfixed;
+ int nDeletions;
+ int nUnmarkedDeletions;
+-
++
+ int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
+
+ /* Special directories */
+@@ -727,7 +739,7 @@ struct yaffs_DeviceStruct {
+ * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK];
+ * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK];
+ */
+-
++
+ int bufferedBlock; /* Which block is buffered here? */
+ int doingBufferedBlockRewrite;
+
+@@ -744,9 +756,11 @@ struct yaffs_DeviceStruct {
+ int nUnlinkedFiles; /* Count of unlinked files. */
+ int nBackgroundDeletions; /* Count of background deletions. */
+
+-
++
++ /* Temporary buffer management */
+ yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
+ int maxTemp;
++ int tempInUse;
+ int unmanagedTempAllocations;
+ int unmanagedTempDeallocations;
+
+@@ -758,17 +772,17 @@ struct yaffs_DeviceStruct {
+
+ typedef struct yaffs_DeviceStruct yaffs_Device;
+
+-/* The static layout of bllock usage etc is stored in the super block header */
++/* The static layout of block usage etc is stored in the super block header */
+ typedef struct {
+ int StructType;
+- int version;
++ int version;
+ int checkpointStartBlock;
+ int checkpointEndBlock;
+ int startBlock;
+ int endBlock;
+ int rfu[100];
+ } yaffs_SuperBlockHeader;
+-
++
+ /* The CheckpointDevice structure holds the device information that changes at runtime and
+ * must be preserved over unmount/mount cycles.
+ */
+@@ -797,18 +811,6 @@ typedef struct {
+ __u32 head;
+ } yaffs_CheckpointValidity;
+
+-/* Function to manipulate block info */
+-static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
+-{
+- if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
+- T(YAFFS_TRACE_ERROR,
+- (TSTR
+- ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
+- blk));
+- YBUG();
+- }
+- return &dev->blockInfo[blk - dev->internalStartBlock];
+-}
+
+ /*----------------------- YAFFS Functions -----------------------*/
+
+@@ -834,13 +836,13 @@ int yaffs_GetAttributes(yaffs_Object * o
+
+ /* File operations */
+ int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
+- int nBytes);
++ int nBytes);
+ int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
+- int nBytes, int writeThrough);
++ int nBytes, int writeThrough);
+ int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
+
+ yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
+- __u32 mode, __u32 uid, __u32 gid);
++ __u32 mode, __u32 uid, __u32 gid);
+ int yaffs_FlushFile(yaffs_Object * obj, int updateTime);
+
+ /* Flushing and checkpointing */
+@@ -899,4 +901,7 @@ void yaffs_DeleteChunk(yaffs_Device * de
+ int yaffs_CheckFF(__u8 * buffer, int nBytes);
+ void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
+
++__u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo);
++void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer, int lineNo);
++
+ #endif
+--- a/fs/yaffs2/moduleconfig.h
++++ b/fs/yaffs2/moduleconfig.h
+@@ -54,11 +54,11 @@ that you need to continue to support. N
+ older-style format.
+ Note: Use of this option generally requires that MTD's oob layout be
+ adjusted to use the older-style format. See notes on tags formats and
+-MTD versions.
++MTD versions in yaffs_mtdif1.c.
+ */
+ /* Default: Not selected */
+ /* Meaning: Use older-style on-NAND data format with pageStatus byte */
+-#define CONFIG_YAFFS_9BYTE_TAGS
++//#define CONFIG_YAFFS_9BYTE_TAGS
+
+ #endif /* YAFFS_OUT_OF_TREE */
+
+--- a/fs/yaffs2/yaffs_mtdif1.h
++++ b/fs/yaffs2/yaffs_mtdif1.h
+@@ -23,6 +23,6 @@ int nandmtd1_ReadChunkWithTagsFromNAND(y
+ int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+
+ int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+- yaffs_BlockState * state, int *sequenceNumber);
++ yaffs_BlockState * state, __u32 *sequenceNumber);
+
+ #endif
+--- a/fs/yaffs2/yaffs_mtdif2.h
++++ b/fs/yaffs2/yaffs_mtdif2.h
+@@ -24,6 +24,6 @@ int nandmtd2_ReadChunkWithTagsFromNAND(y
+ __u8 * data, yaffs_ExtendedTags * tags);
+ int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+ int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+- yaffs_BlockState * state, int *sequenceNumber);
++ yaffs_BlockState * state, __u32 *sequenceNumber);
+
+ #endif
+--- a/fs/yaffs2/yaffs_checkptrw.c
++++ b/fs/yaffs2/yaffs_checkptrw.c
+@@ -12,11 +12,11 @@
+ */
+
+ const char *yaffs_checkptrw_c_version =
+- "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $";
++ "$Id: yaffs_checkptrw.c,v 1.17 2008-08-12 22:51:57 charles Exp $";
+
+
+ #include "yaffs_checkptrw.h"
+-
++#include "yaffs_getblockinfo.h"
+
+ static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
+ {
+@@ -142,7 +142,7 @@ int yaffs_CheckpointOpen(yaffs_Device *d
+ return 0;
+
+ if(!dev->checkpointBuffer)
+- dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
++ dev->checkpointBuffer = YMALLOC_DMA(dev->totalBytesPerChunk);
+ if(!dev->checkpointBuffer)
+ return 0;
+
+@@ -324,6 +324,7 @@ int yaffs_CheckpointRead(yaffs_Device *d
+ &tags);
+
+ if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
++ tags.eccResult > YAFFS_ECC_RESULT_FIXED ||
+ tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
+ ok = 0;
+
+--- a/fs/yaffs2/yaffs_tagscompat.c
++++ b/fs/yaffs2/yaffs_tagscompat.c
+@@ -14,6 +14,7 @@
+ #include "yaffs_guts.h"
+ #include "yaffs_tagscompat.h"
+ #include "yaffs_ecc.h"
++#include "yaffs_getblockinfo.h"
+
+ static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND);
+ #ifdef NOTYET
+@@ -252,6 +253,9 @@ static int yaffs_ReadChunkFromNAND(struc
+ /* Must allocate enough memory for spare+2*sizeof(int) */
+ /* for ecc results from device. */
+ struct yaffs_NANDSpare nspare;
++
++ memset(&nspare,0,sizeof(nspare));
++
+ retVal =
+ dev->readChunkFromNAND(dev, chunkInNAND, data,
+ (yaffs_Spare *) & nspare);
+@@ -336,7 +340,7 @@ static void yaffs_HandleReadDataError(ya
+ int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
+
+ /* Mark the block for retirement */
+- yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
++ yaffs_GetBlockInfo(dev, blockInNAND + dev->blockOffset)->needsRetiring = 1;
+ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
+ (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND));
+
+@@ -414,7 +418,16 @@ int yaffs_TagsCompatabilityWriteChunkWit
+ } else {
+ tags.objectId = eTags->objectId;
+ tags.chunkId = eTags->chunkId;
+- tags.byteCount = eTags->byteCount;
++
++ tags.byteCountLSB = eTags->byteCount & 0x3ff;
++
++ if(dev->nDataBytesPerChunk >= 1024){
++ tags.byteCountMSB = (eTags->byteCount >> 10) & 3;
++ } else {
++ tags.byteCountMSB = 3;
++ }
++
++
+ tags.serialNumber = eTags->serialNumber;
+
+ if (!dev->useNANDECC && data) {
+@@ -435,10 +448,10 @@ int yaffs_TagsCompatabilityReadChunkWith
+
+ yaffs_Spare spare;
+ yaffs_Tags tags;
+- yaffs_ECCResult eccResult;
++ yaffs_ECCResult eccResult = YAFFS_ECC_RESULT_UNKNOWN;
+
+ static yaffs_Spare spareFF;
+- static int init;
++ static int init = 0;
+
+ if (!init) {
+ memset(&spareFF, 0xFF, sizeof(spareFF));
+@@ -466,7 +479,11 @@ int yaffs_TagsCompatabilityReadChunkWith
+
+ eTags->objectId = tags.objectId;
+ eTags->chunkId = tags.chunkId;
+- eTags->byteCount = tags.byteCount;
++ eTags->byteCount = tags.byteCountLSB;
++
++ if(dev->nDataBytesPerChunk >= 1024)
++ eTags->byteCount |= (((unsigned) tags.byteCountMSB) << 10);
++
+ eTags->serialNumber = tags.serialNumber;
+ }
+ }
+@@ -497,9 +514,9 @@ int yaffs_TagsCompatabilityMarkNANDBlock
+ }
+
+ int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
+- int blockNo, yaffs_BlockState *
+- state,
+- int *sequenceNumber)
++ int blockNo,
++ yaffs_BlockState *state,
++ __u32 *sequenceNumber)
+ {
+
+ yaffs_Spare spare0, spare1;
+--- a/fs/yaffs2/yaffs_mtdif.c
++++ b/fs/yaffs2/yaffs_mtdif.c
+@@ -12,7 +12,7 @@
+ */
+
+ const char *yaffs_mtdif_c_version =
+- "$Id: yaffs_mtdif.c,v 1.19 2007-02-14 01:09:06 wookey Exp $";
++ "$Id: yaffs_mtdif.c,v 1.21 2007-12-13 15:35:18 wookey Exp $";
+
+ #include "yportenv.h"
+
+@@ -24,7 +24,7 @@ const char *yaffs_mtdif_c_version =
+ #include "linux/time.h"
+ #include "linux/mtd/nand.h"
+
+-#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
++#if (MTD_VERSION_CODE < MTD_VERSION(2,6,18))
+ static struct nand_oobinfo yaffs_oobinfo = {
+ .useecc = 1,
+ .eccbytes = 6,
+@@ -36,7 +36,7 @@ static struct nand_oobinfo yaffs_noeccin
+ };
+ #endif
+
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob)
+ {
+ oob[0] = spare->tagByte0;
+@@ -75,14 +75,14 @@ int nandmtd_WriteChunkToNAND(yaffs_Devic
+ const __u8 * data, const yaffs_Spare * spare)
+ {
+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ struct mtd_oob_ops ops;
+ #endif
+ size_t dummy;
+ int retval = 0;
+
+ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ __u8 spareAsBytes[8]; /* OOB */
+
+ if (data && !spare)
+@@ -139,14 +139,14 @@ int nandmtd_ReadChunkFromNAND(yaffs_Devi
+ yaffs_Spare * spare)
+ {
+ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ struct mtd_oob_ops ops;
+ #endif
+ size_t dummy;
+ int retval = 0;
+
+ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
+-#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#if (MTD_VERSION_CODE > MTD_VERSION(2,6,17))
+ __u8 spareAsBytes[8]; /* OOB */
+
+ if (data && !spare)
+--- a/fs/yaffs2/yaffs_nandemul2k.h
++++ b/fs/yaffs2/yaffs_nandemul2k.h
+@@ -22,13 +22,13 @@
+
+ int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
+ int chunkInNAND, const __u8 * data,
+- yaffs_ExtendedTags * tags);
++ const yaffs_ExtendedTags * tags);
+ int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev,
+ int chunkInNAND, __u8 * data,
+ yaffs_ExtendedTags * tags);
+ int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
+ int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
+- yaffs_BlockState * state, int *sequenceNumber);
++ yaffs_BlockState * state, __u32 *sequenceNumber);
+ int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
+ int blockInNAND);
+ int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev);
projects / librecmc / librecmc.git / commitdiff