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[PATCH] ext4: switch fsblk to sector_t

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Redefine ext3 in-kernel filesystem block type (ext3_fsblk_t) from unsigned
long to sector_t, to allow kernel to handle  >32 bit ext3 blocks.

Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Mingming Cao 2006-10-11 01:21:05 -07:00 • committed by Linus Torvalds
parent a86c618126
commit 3a5b2ecdd1
6 changed files with 57 additions and 30 deletions
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26
include/linux/ext4_fs.h
View file

@ -17,6 +17,7 @@
#define _LINUX_EXT4_FS_H
#include <linux/types.h>
#include <linux/blkdev.h>
#include <linux/magic.h>
/*
@ -749,6 +750,27 @@ ext4_group_first_block_no(struct super_block *sb, unsigned long group_no)
*/
#define ERR_BAD_DX_DIR -75000
/*
* This function calculate the block group number and offset,
* given a block number
*/
static inline void ext4_get_group_no_and_offset(struct super_block * sb,
ext4_fsblk_t blocknr, unsigned long* blockgrpp,
ext4_grpblk_t *offsetp)
{
struct ext4_super_block *es = EXT4_SB(sb)->s_es;
ext4_grpblk_t offset;
blocknr = blocknr - le32_to_cpu(es->s_first_data_block);
offset = sector_div(blocknr, EXT4_BLOCKS_PER_GROUP(sb));
if (offsetp)
*offsetp = offset;
if (blockgrpp)
*blockgrpp = blocknr;
}
/*
* Function prototypes
*/
@ -762,6 +784,10 @@ ext4_group_first_block_no(struct super_block *sb, unsigned long group_no)
# define NORET_AND noreturn,
/* balloc.c */
extern unsigned int ext4_block_group(struct super_block *sb,
ext4_fsblk_t blocknr);
extern ext4_grpblk_t ext4_block_group_offset(struct super_block *sb,
ext4_fsblk_t blocknr);
extern int ext4_bg_has_super(struct super_block *sb, int group);
extern unsigned long ext4_bg_num_gdb(struct super_block *sb, int group);
extern ext4_fsblk_t ext4_new_block (handle_t *handle, struct inode *inode,