FAT: Support the large partition (> 128GB) for 2.4

diff -puN fs/fat/dir.c~fat_large-disk-2.4 fs/fat/dir.c
@@ -198,11 +198,11 @@ int fat_search_long(struct inode *inode,
 	int uni_xlate = MSDOS_SB(sb)->options.unicode_xlate;
 	int utf8 = MSDOS_SB(sb)->options.utf8;
 	unsigned short opt_shortname = MSDOS_SB(sb)->options.shortname;
-	int ino, chl, i, j, last_u, res = 0;
-	loff_t cpos = 0;
+	int chl, i, j, last_u, res = 0;
+	loff_t i_pos, cpos = 0;
 
 	while(1) {
-		if (fat_get_entry(inode,&cpos,&bh,&de,&ino) == -1)
+		if (fat_get_entry(inode,&cpos,&bh,&de,&i_pos) == -1)
 			goto EODir;
 parse_record:
 		long_slots = 0;

@@ -253,7 +253,7 @@ parse_long:
 				if (ds->id & 0x40) {
 					unicode[offset + 13] = 0;
 				}
-				if (fat_get_entry(inode,&cpos,&bh,&de,&ino)<0)
+				if (fat_get_entry(inode,&cpos,&bh,&de,&i_pos)<0)
 					goto EODir;
 				if (slot == 0)
 					break;

@@ -368,8 +368,9 @@ static int fat_readdirx(struct inode *in
 	int utf8 = MSDOS_SB(sb)->options.utf8;
 	int nocase = MSDOS_SB(sb)->options.nocase;
 	unsigned short opt_shortname = MSDOS_SB(sb)->options.shortname;
-	int ino, inum, chi, chl, i, i2, j, last, last_u, dotoffset = 0;
-	loff_t cpos;
+	unsigned long inum;
+	int chi, chl, i, i2, j, last, last_u, dotoffset = 0;
+	loff_t i_pos, cpos;
 
 	cpos = filp->f_pos;
 /* Fake . and .. for the root directory. */

@@ -392,7 +393,7 @@ static int fat_readdirx(struct inode *in
  	bh = NULL;
 GetNew:
 	long_slots = 0;
-	if (fat_get_entry(inode,&cpos,&bh,&de,&ino) == -1)
+	if (fat_get_entry(inode,&cpos,&bh,&de,&i_pos) == -1)
 		goto EODir;
 	/* Check for long filename entry */
 	if (isvfat) {

@@ -449,7 +450,7 @@ ParseLong:
 			if (ds->id & 0x40) {
 				unicode[offset + 13] = 0;
 			}
-			if (fat_get_entry(inode,&cpos,&bh,&de,&ino) == -1)
+			if (fat_get_entry(inode,&cpos,&bh,&de,&i_pos) == -1)
 				goto EODir;
 			if (slot == 0)
 				break;

@@ -541,7 +542,7 @@ ParseLong:
 /*		inum = fat_parent_ino(inode,0); */
 		inum = filp->f_dentry->d_parent->d_inode->i_ino;
 	} else {
-		struct inode *tmp = fat_iget(sb, ino);
+		struct inode *tmp = fat_iget(sb, i_pos);
 		if (tmp) {
 			inum = tmp->i_ino;
 			iput(tmp);

@@ -690,14 +691,14 @@ int fat_dir_ioctl(struct inode * inode, 
 /***** See if directory is empty */
 int fat_dir_empty(struct inode *dir)
 {
-	loff_t pos;
+	loff_t pos, i_pos;
 	struct buffer_head *bh;
 	struct msdos_dir_entry *de;
-	int ino,result = 0;
+	int result = 0;
 
 	pos = 0;
 	bh = NULL;
-	while (fat_get_entry(dir,&pos,&bh,&de,&ino) > -1) {
+	while (fat_get_entry(dir,&pos,&bh,&de,&i_pos) > -1) {
 		/* Ignore vfat longname entries */
 		if (de->attr == ATTR_EXT)
 			continue;

@@ -717,7 +718,7 @@ int fat_dir_empty(struct inode *dir)
 /* This assumes that size of cluster is above the 32*slots */
 
 int fat_add_entries(struct inode *dir,int slots, struct buffer_head **bh,
-		  struct msdos_dir_entry **de, int *ino)
+		  struct msdos_dir_entry **de, loff_t *i_pos)
 {
 	struct super_block *sb = dir->i_sb;
 	loff_t offset, curr;

@@ -727,7 +728,7 @@ int fat_add_entries(struct inode *dir,in
 	offset = curr = 0;
 	*bh = NULL;
 	row = 0;
-	while (fat_get_entry(dir,&curr,bh,de,ino) > -1) {
+	while (fat_get_entry(dir,&curr,bh,de,i_pos) > -1) {
 		if (IS_FREE((*de)->name)) {
 			if (++row == slots)
 				return offset;

@@ -742,7 +743,7 @@ int fat_add_entries(struct inode *dir,in
 	if (!new_bh)
 		return -ENOSPC;
 	fat_brelse(sb, new_bh);
-	do fat_get_entry(dir,&curr,bh,de,ino); while (++row<slots);
+	do fat_get_entry(dir,&curr,bh,de,i_pos); while (++row<slots);
 	return offset;
 }
 

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diff -puN fs/vfat/namei.c~fat_large-disk-2.4 fs/vfat/namei.c
@@ -408,9 +408,10 @@ static int vfat_find_form(struct inode *
 {
 	struct msdos_dir_entry *de;
 	struct buffer_head *bh = NULL;
-	int ino,res;
+	loff_t i_pos;
+	int res;
 
-	res=fat_scan(dir,name,&bh,&de,&ino);
+	res = fat_scan(dir, name, &bh, &de, &i_pos);
 	fat_brelse(dir->i_sb, bh);
 	if (res<0)
 		return -ENOENT;

@@ -891,7 +892,7 @@ static int vfat_add_entry(struct inode *
 	int res, len;
 	struct msdos_dir_entry *dummy_de;
 	struct buffer_head *dummy_bh;
-	int dummy_ino;
+	loff_t dummy_i_pos;
 	loff_t dummy;
 
 	dir_slots = (struct msdos_dir_slot *)

@@ -917,7 +918,7 @@ static int vfat_add_entry(struct inode *
 		goto cleanup;
 
 	/* build the empty directory entry of number of slots */
-	offset = fat_add_entries(dir, slots, &dummy_bh, &dummy_de, &dummy_ino);
+	offset = fat_add_entries(dir, slots, &dummy_bh, &dummy_de, &dummy_i_pos);
 	if (offset < 0) {
 		res = offset;
 		goto cleanup;

@@ -927,7 +928,7 @@ static int vfat_add_entry(struct inode *
 	/* Now create the new entry */
 	*bh = NULL;
 	for (slot = 0; slot < slots; slot++) {
-		if (fat_get_entry(dir, &offset, bh, de, &sinfo_out->ino) < 0) {
+		if (fat_get_entry(dir, &offset, bh, de, &sinfo_out->i_pos) < 0) {
 			res = -EIO;
 			goto cleanup;
 		}

@@ -972,7 +973,7 @@ static int vfat_find(struct inode *dir,s
 			&offset,&sinfo->longname_offset);
 	if (res>0) {
 		sinfo->long_slots = res-1;
-		if (fat_get_entry(dir,&offset,last_bh,last_de,&sinfo->ino)>=0)
+		if (fat_get_entry(dir,&offset,last_bh,last_de,&sinfo->i_pos)>=0)
 			return 0;
 		res = -EIO;
 	} 

@@ -1001,7 +1002,7 @@ struct dentry *vfat_lookup(struct inode 
 		table++;
 		goto error;
 	}
-	inode = fat_build_inode(dir->i_sb, de, sinfo.ino, &res);
+	inode = fat_build_inode(dir->i_sb, de, sinfo.i_pos, &res);
 	fat_brelse(dir->i_sb, bh);
 	if (res)
 		return ERR_PTR(res);

@@ -1034,7 +1035,7 @@ int vfat_create(struct inode *dir,struct
 	res = vfat_add_entry(dir, &dentry->d_name, 0, &sinfo, &bh, &de);
 	if (res < 0)
 		return res;
-	inode = fat_build_inode(sb, de, sinfo.ino, &res);
+	inode = fat_build_inode(sb, de, sinfo.i_pos, &res);
 	fat_brelse(sb, bh);
 	if (!inode)
 		return res;

@@ -1051,8 +1052,8 @@ static void vfat_remove_entry(struct ino
      struct buffer_head *bh, struct msdos_dir_entry *de)
 {
 	struct super_block *sb = dir->i_sb;
-	loff_t offset;
-	int i,ino;
+	loff_t offset, i_pos;
+	int i;
 
 	/* remove the shortname */
 	dir->i_mtime = CURRENT_TIME;

@@ -1064,7 +1065,7 @@ static void vfat_remove_entry(struct ino
 	/* remove the longname */
 	offset = sinfo->longname_offset; de = NULL;
 	for (i = sinfo->long_slots; i > 0; --i) {
-		if (fat_get_entry(dir, &offset, &bh, &de, &ino) < 0)
+		if (fat_get_entry(dir, &offset, &bh, &de, &i_pos) < 0)
 			continue;
 		de->name[0] = DELETED_FLAG;
 		de->attr = 0;

@@ -1133,7 +1134,7 @@ int vfat_mkdir(struct inode *dir,struct 
 	res = vfat_add_entry(dir, &dentry->d_name, 1, &sinfo, &bh, &de);
 	if (res < 0)
 		return res;
-	inode = fat_build_inode(sb, de, sinfo.ino, &res);
+	inode = fat_build_inode(sb, de, sinfo.i_pos, &res);
 	if (!inode)
 		goto out;
 	inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;

@@ -1170,7 +1171,7 @@ int vfat_rename(struct inode *old_dir,st
 	struct super_block *sb = old_dir->i_sb;
 	struct buffer_head *old_bh,*new_bh,*dotdot_bh;
 	struct msdos_dir_entry *old_de,*new_de,*dotdot_de;
-	int dotdot_ino;
+	loff_t dotdot_i_pos;
 	struct inode *old_inode, *new_inode;
 	int res, is_dir;
 	struct vfat_slot_info old_sinfo,sinfo;

@@ -1185,13 +1186,13 @@ int vfat_rename(struct inode *old_dir,st
 	is_dir = S_ISDIR(old_inode->i_mode);
 
 	if (is_dir && (res = fat_scan(old_inode,MSDOS_DOTDOT,&dotdot_bh,
-				&dotdot_de,&dotdot_ino)) < 0)
+				&dotdot_de,&dotdot_i_pos)) < 0)
 		goto rename_done;
 
 	if (new_dentry->d_inode) {
 		res = vfat_find(new_dir,&new_dentry->d_name,&sinfo,&new_bh,
 				&new_de);
-		if (res < 0 || MSDOS_I(new_inode)->i_location != sinfo.ino) {
+		if (res < 0 || MSDOS_I(new_inode)->i_pos != sinfo.i_pos) {
 			/* WTF??? Cry and fail. */
 			printk(KERN_WARNING "vfat_rename: fs corrupted\n");
 			goto rename_done;

@@ -1215,7 +1216,7 @@ int vfat_rename(struct inode *old_dir,st
 	vfat_remove_entry(old_dir,&old_sinfo,old_bh,old_de);
 	old_bh=NULL;
 	fat_detach(old_inode);
-	fat_attach(old_inode, sinfo.ino);
+	fat_attach(old_inode, sinfo.i_pos);
 	mark_inode_dirty(old_inode);
 
 	old_dir->i_version = ++event;

diff -puN include/linux/msdos_fs.h~fat_large-disk-2.4 include/linux/msdos_fs.h
@@ -180,7 +180,7 @@ struct vfat_slot_info {
 	int total_slots;	       /* total slots (long and short) */
 	loff_t longname_offset;	       /* dir offset for longname start */
 	loff_t shortname_offset;       /* dir offset for shortname start */
-	int ino;		       /* ino for the file */
+	loff_t i_pos;		       /* on-disk position of directory entry */
 };
 
 /* Determine whether this FS has kB-aligned data. */

@@ -264,7 +264,7 @@ extern int fat_dir_ioctl(struct inode * 
 			 unsigned int cmd, unsigned long arg);
 extern int fat_dir_empty(struct inode *dir);
 extern int fat_add_entries(struct inode *dir, int slots, struct buffer_head **bh,
-			   struct msdos_dir_entry **de, int *ino);
+			struct msdos_dir_entry **de, loff_t *i_pos);
 extern int fat_new_dir(struct inode *dir, struct inode *parent, int is_vfat);
 
 /* fat/file.c */

@@ -280,11 +280,11 @@ extern void fat_truncate(struct inode *i
 
 /* fat/inode.c */
 extern void fat_hash_init(void);
-extern void fat_attach(struct inode *inode, int i_pos);
+extern void fat_attach(struct inode *inode, loff_t i_pos);
 extern void fat_detach(struct inode *inode);
-extern struct inode *fat_iget(struct super_block *sb, int i_pos);
+extern struct inode *fat_iget(struct super_block *sb, loff_t i_pos);
 extern struct inode *fat_build_inode(struct super_block *sb,
-				     struct msdos_dir_entry *de, int ino, int *res);
+			struct msdos_dir_entry *de, loff_t i_pos, int *res);
 extern void fat_delete_inode(struct inode *inode);
 extern void fat_clear_inode(struct inode *inode);
 extern void fat_put_super(struct super_block *sb);

@@ -306,26 +306,27 @@ extern struct buffer_head *fat_extend_di
 extern int date_dos2unix(unsigned short time, unsigned short date);
 extern void fat_date_unix2dos(int unix_date, unsigned short *time,
 			      unsigned short *date);
-extern int fat__get_entry(struct inode *dir, loff_t *pos, struct buffer_head **bh,
-			  struct msdos_dir_entry **de, int *ino);
+extern int fat__get_entry(struct inode *dir, loff_t *pos,
+			  struct buffer_head **bh,
+			  struct msdos_dir_entry **de, loff_t *i_pos);
 static __inline__ int fat_get_entry(struct inode *dir, loff_t *pos,
 				    struct buffer_head **bh,
-				    struct msdos_dir_entry **de, int *ino)
+				    struct msdos_dir_entry **de, loff_t *i_pos)
 {
 	/* Fast stuff first */
 	if (*bh && *de &&
 	    (*de - (struct msdos_dir_entry *)(*bh)->b_data) < MSDOS_SB(dir->i_sb)->dir_per_block - 1) {
 		*pos += sizeof(struct msdos_dir_entry);
 		(*de)++;
-		(*ino)++;
+		(*i_pos)++;
 		return 0;
 	}
-	return fat__get_entry(dir,pos,bh,de,ino);
+	return fat__get_entry(dir, pos, bh, de, i_pos);
 }
 extern int fat_subdirs(struct inode *dir);
 extern int fat_scan(struct inode *dir, const char *name,
 		    struct buffer_head **res_bh,
-		    struct msdos_dir_entry **res_de, int *ino);
+		    struct msdos_dir_entry **res_de, loff_t *i_pos);
 
 /* msdos/namei.c  - these are for Umsdos */
 extern void msdos_put_super(struct super_block *sb);

diff -puN include/linux/msdos_fs_i.h~fat_large-disk-2.4 include/linux/msdos_fs_i.h
@@ -11,7 +11,7 @@ struct msdos_inode_info {
 	int i_logstart;	/* logical first cluster */
 	int i_attrs;	/* unused attribute bits */
 	int i_ctime_ms;	/* unused change time in milliseconds */
-	int i_location;	/* on-disk position of directory entry or 0 */
+	loff_t i_pos;	/* on-disk position of directory entry or 0 */
 	struct inode *i_fat_inode;	/* struct inode of this one */
 	struct list_head i_fat_hash;	/* hash by i_location */
 };

diff -urN linux/fs.orig/buffer.c linux/fs/buffer.c
@@ -1940,7 +1940,7 @@
  * We may have to extend the file.
  */
 
-int cont_prepare_write(struct page *page, unsigned offset, unsigned to, get_block_t *get_block, unsigned long *bytes)
+int cont_prepare_write(struct page *page, unsigned offset, unsigned to, get_block_t *get_block, loff_t *bytes)
 {
 	struct address_space *mapping = page->mapping;
 	struct inode *inode = mapping->host;

diff -urN linux/fs.orig/fat/dir.c linux/fs/fat/dir.c
@@ -362,15 +362,14 @@
 	unsigned char long_slots;
 	wchar_t *unicode = NULL;
 	char c, work[8], bufname[56], *ptname = bufname;
-	unsigned long lpos, dummy, *furrfu = &lpos;
+	loff_t lpos, dummy, *furrfu = &lpos;
 	int uni_xlate = MSDOS_SB(sb)->options.unicode_xlate;
 	int isvfat = MSDOS_SB(sb)->options.isvfat;
 	int utf8 = MSDOS_SB(sb)->options.utf8;
 	int nocase = MSDOS_SB(sb)->options.nocase;
 	unsigned short opt_shortname = MSDOS_SB(sb)->options.shortname;
-	unsigned long inum;
 	int chi, chl, i, i2, j, last, last_u, dotoffset = 0;
-	loff_t i_pos, cpos;
+	loff_t i_pos, inum, cpos;
 
 	cpos = filp->f_pos;
 /* Fake . and .. for the root directory. */

diff -urN linux/fs.orig/fat/file.c linux/fs/fat/file.c
@@ -62,7 +62,7 @@
 	}
 	if (!create)
 		return 0;
-	if (iblock << sb->s_blocksize_bits != MSDOS_I(inode)->mmu_private) {
+	if (iblock != MSDOS_I(inode)->mmu_private >> sb->s_blocksize_bits) {
 		BUG();
 		return -EIO;
 	}

diff -urN linux/fs.orig/fat/inode.c linux/fs/fat/inode.c
@@ -406,7 +406,7 @@
 	}
 	inode->i_blksize = 1 << sbi->cluster_bits;
 	inode->i_blocks = ((inode->i_size + inode->i_blksize - 1)
-			   & ~(inode->i_blksize - 1)) >> 9;
+			   & ~((loff_t)inode->i_blksize - 1)) >> 9;
 	MSDOS_I(inode)->i_logstart = 0;
 	MSDOS_I(inode)->mmu_private = inode->i_size;
 

@@ -556,8 +556,8 @@
 	struct fat_boot_sector *b;
 	struct msdos_sb_info *sbi = MSDOS_SB(sb);
 	char *p;
-	int logical_sector_size, hard_blksize, fat_clusters = 0;
-	unsigned int total_sectors, rootdir_sectors;
+	int logical_sector_size, hard_blksize;
+	unsigned long total_sectors, rootdir_sectors, fat_clusters = 0;
 	int fat32, debug, error, fat, cp;
 	struct fat_mount_options opts;
 	char buf[50];

@@ -651,6 +651,7 @@
 		fat32 = 1;
 		sbi->fat_length = CF_LE_L(b->fat32_length);
 		sbi->root_cluster = CF_LE_L(b->root_cluster);
+		sb->s_maxbytes = 0xffffffff;
 
 		sbi->fsinfo_sector = CF_LE_W(b->info_sector);
 		/* MC - if info_sector is 0, don't multiply by 0 */

@@ -957,7 +958,7 @@
 	/* this is as close to the truth as we can get ... */
 	inode->i_blksize = 1 << sbi->cluster_bits;
 	inode->i_blocks = ((inode->i_size + inode->i_blksize - 1)
-			   & ~(inode->i_blksize - 1)) >> 9;
+			   & ~((loff_t)inode->i_blksize - 1)) >> 9;
 	inode->i_mtime = inode->i_atime =
 		date_dos2unix(CF_LE_W(de->time),CF_LE_W(de->date));
 	inode->i_ctime =

diff -urN linux/include/linux.orig/adfs_fs_i.h linux/include/linux/adfs_fs_i.h
@@ -11,7 +11,7 @@
  * adfs file system inode data in memory
  */
 struct adfs_inode_info {
-	unsigned long	mmu_private;
+	loff_t		mmu_private;
 	unsigned long	parent_id;	/* object id of parent		*/
 	__u32		loadaddr;	/* RISC OS load address		*/
 	__u32		execaddr;	/* RISC OS exec address		*/

diff -urN linux/include/linux.orig/affs_fs_i.h linux/include/linux/affs_fs_i.h
@@ -36,7 +36,7 @@
 	struct affs_ext_key *i_ac;		/* associative cache of extended blocks */
 	u32	 i_ext_last;			/* last accessed extended block */
 	struct buffer_head *i_ext_bh;		/* bh of last extended block */
-	unsigned long mmu_private;
+	loff_t	 mmu_private;
 	u32	 i_protect;			/* unused attribute bits */
 	u32	 i_lastalloc;			/* last allocated block */
 	int	 i_pa_cnt;			/* number of preallocated blocks */

diff -urN linux/include/linux.orig/fs.h linux/include/linux/fs.h
@@ -1505,7 +1505,7 @@
 extern int block_read_full_page(struct page*, get_block_t*);
 extern int block_prepare_write(struct page*, unsigned, unsigned, get_block_t*);
 extern int cont_prepare_write(struct page*, unsigned, unsigned, get_block_t*,
-				unsigned long *);
+				loff_t *);
 extern int generic_cont_expand(struct inode *inode, loff_t size) ;
 extern int block_commit_write(struct page *page, unsigned from, unsigned to);
 extern int block_sync_page(struct page *);

diff -urN linux/include/linux.orig/hfs_fs_i.h linux/include/linux/hfs_fs_i.h
@@ -19,7 +19,7 @@
 struct hfs_inode_info {
 	int				magic;     /* A magic number */
 
-	unsigned long			mmu_private;
+	loff_t				mmu_private;
 	struct hfs_cat_entry		*entry;
 
 	/* For a regular or header file */

diff -urN linux/include/linux.orig/hpfs_fs_i.h linux/include/linux/hpfs_fs_i.h
@@ -2,7 +2,7 @@
 #define _HPFS_FS_I
 
 struct hpfs_inode_info {
-	unsigned long mmu_private;
+	loff_t mmu_private;
 	ino_t i_parent_dir;	/* (directories) gives fnode of parent dir */
 	unsigned i_dno;		/* (directories) root dnode */
 	unsigned i_dpos;	/* (directories) temp for readdir */

diff -urN linux/include/linux.orig/msdos_fs_i.h linux/include/linux/msdos_fs_i.h
@@ -6,7 +6,7 @@
  */
 
 struct msdos_inode_info {
-	unsigned long mmu_private;
+	loff_t mmu_private;
 	int i_start;	/* first cluster or 0 */
 	int i_logstart;	/* logical first cluster */
 	int i_attrs;	/* unused attribute bits */