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[PATCH] ext4: move block number hi bits

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move '_hi' bits of block numbers in the larger part of the
block group descriptor structure

Signed-off-by: Alexandre Ratchov <alexandre.ratchov@bull.net>
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:
Alexandre Ratchov 2006-10-11 01:21:15 -07:00 • committed by Linus Torvalds
parent 0d1ee42f27
commit 8fadc14323
6 changed files with 64 additions and 46 deletions
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27
include/linux/ext4_fs.h
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@ -129,10 +129,10 @@ struct ext4_group_desc
__le16 bg_free_inodes_count; /* Free inodes count */
__le16 bg_used_dirs_count; /* Directories count */
__u16 bg_flags;
__le16 bg_block_bitmap_hi; /* Blocks bitmap block MSB */
__le16 bg_inode_bitmap_hi; /* Inodes bitmap block MSB */
__le16 bg_inode_table_hi; /* Inodes table block MSB */
__u16 bg_reserved[3];
__u32 bg_reserved[3];
__le32 bg_block_bitmap_hi; /* Blocks bitmap block MSB */
__le32 bg_inode_bitmap_hi; /* Inodes bitmap block MSB */
__le32 bg_inode_table_hi; /* Inodes table block MSB */
};
#ifdef __KERNEL__
@ -143,6 +143,7 @@ struct ext4_group_desc
* Macro-instructions used to manage group descriptors
*/
#define EXT4_MIN_DESC_SIZE 32
#define EXT4_MIN_DESC_SIZE_64BIT 64
#define EXT4_MAX_DESC_SIZE EXT4_MIN_BLOCK_SIZE
#define EXT4_DESC_SIZE(s) (EXT4_SB(s)->s_desc_size)
#ifdef __KERNEL__
@ -904,12 +905,18 @@ extern void ext4_abort (struct super_block *, const char *, const char *, ...)
extern void ext4_warning (struct super_block *, const char *, const char *, ...)
__attribute__ ((format (printf, 3, 4)));
extern void ext4_update_dynamic_rev (struct super_block *sb);
extern ext4_fsblk_t ext4_block_bitmap(struct ext4_group_desc *bg);
extern ext4_fsblk_t ext4_inode_bitmap(struct ext4_group_desc *bg);
extern ext4_fsblk_t ext4_inode_table(struct ext4_group_desc *bg);
extern void ext4_block_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk);
extern void ext4_inode_bitmap_set(struct ext4_group_desc *bg, ext4_fsblk_t blk);
extern void ext4_inode_table_set(struct ext4_group_desc *bg, ext4_fsblk_t blk);
extern ext4_fsblk_t ext4_block_bitmap(struct super_block *sb,
struct ext4_group_desc *bg);
extern ext4_fsblk_t ext4_inode_bitmap(struct super_block *sb,
struct ext4_group_desc *bg);
extern ext4_fsblk_t ext4_inode_table(struct super_block *sb,
struct ext4_group_desc *bg);
extern void ext4_block_bitmap_set(struct super_block *sb,
struct ext4_group_desc *bg, ext4_fsblk_t blk);
extern void ext4_inode_bitmap_set(struct super_block *sb,
struct ext4_group_desc *bg, ext4_fsblk_t blk);
extern void ext4_inode_table_set(struct super_block *sb,
struct ext4_group_desc *bg, ext4_fsblk_t blk);
static inline ext4_fsblk_t ext4_blocks_count(struct ext4_super_block *es)
{