#define _LINUX_EXT3_FS_H
#include <linux/types.h>
-#include <linux/ext3_fs_i.h>
-#include <linux/ext3_fs_sb.h>
-
-
-struct statfs;
/*
* The second extended filesystem constants/structures
* Define EXT3_RESERVATION to reserve data blocks for expanding files
*/
#define EXT3_DEFAULT_RESERVE_BLOCKS 8
-#define EXT3_MAX_RESERVE_BLOCKS 1024
+/*max window size: 1024(direct blocks) + 3([t,d]indirect blocks) */
+#define EXT3_MAX_RESERVE_BLOCKS 1027
#define EXT3_RESERVE_WINDOW_NOT_ALLOCATED 0
/*
* Always enable hashed directories
};
#ifdef __KERNEL__
+#include <linux/ext3_fs_i.h>
+#include <linux/ext3_fs_sb.h>
static inline struct ext3_sb_info * EXT3_SB(struct super_block *sb)
{
return sb->s_fs_info;
#define DX_HASH_HALF_MD4 1
#define DX_HASH_TEA 2
+#ifdef __KERNEL__
+
/* hash info structure used by the directory hash */
struct dx_hash_info
{
#define EXT3_HTREE_EOF 0x7fffffff
-#ifdef __KERNEL__
/*
* Control parameters used by ext3_htree_next_block
*/
__u32 next_hash;
};
+/* calculate the first block number of the group */
+static inline ext3_fsblk_t
+ext3_group_first_block_no(struct super_block *sb, unsigned long group_no)
+{
+ return group_no * (ext3_fsblk_t)EXT3_BLOCKS_PER_GROUP(sb) +
+ le32_to_cpu(EXT3_SB(sb)->s_es->s_first_data_block);
+}
+
/*
* Special error return code only used by dx_probe() and its callers.
*/
/* balloc.c */
extern int ext3_bg_has_super(struct super_block *sb, int group);
extern unsigned long ext3_bg_num_gdb(struct super_block *sb, int group);
-extern int ext3_new_block (handle_t *, struct inode *, unsigned long, int *);
-extern void ext3_free_blocks (handle_t *, struct inode *, unsigned long,
- unsigned long);
-extern void ext3_free_blocks_sb (handle_t *, struct super_block *,
- unsigned long, unsigned long, int *);
-extern unsigned long ext3_count_free_blocks (struct super_block *);
+extern ext3_fsblk_t ext3_new_block (handle_t *handle, struct inode *inode,
+ ext3_fsblk_t goal, int *errp);
+extern ext3_fsblk_t ext3_new_blocks (handle_t *handle, struct inode *inode,
+ ext3_fsblk_t goal, unsigned long *count, int *errp);
+extern void ext3_free_blocks (handle_t *handle, struct inode *inode,
+ ext3_fsblk_t block, unsigned long count);
+extern void ext3_free_blocks_sb (handle_t *handle, struct super_block *sb,
+ ext3_fsblk_t block, unsigned long count,
+ unsigned long *pdquot_freed_blocks);
+extern ext3_fsblk_t ext3_count_free_blocks (struct super_block *);
extern void ext3_check_blocks_bitmap (struct super_block *);
extern struct ext3_group_desc * ext3_get_group_desc(struct super_block * sb,
unsigned int block_group,
/* inode.c */
-int ext3_forget(handle_t *, int, struct inode *, struct buffer_head *, int);
+int ext3_forget(handle_t *handle, int is_metadata, struct inode *inode,
+ struct buffer_head *bh, ext3_fsblk_t blocknr);
struct buffer_head * ext3_getblk (handle_t *, struct inode *, long, int, int *);
struct buffer_head * ext3_bread (handle_t *, struct inode *, int, int, int *);
-int ext3_get_block_handle(handle_t *handle, struct inode *inode,
- sector_t iblock, struct buffer_head *bh_result, int create,
- int extend_disksize);
+int ext3_get_blocks_handle(handle_t *handle, struct inode *inode,
+ sector_t iblock, unsigned long maxblocks, struct buffer_head *bh_result,
+ int create, int extend_disksize);
extern void ext3_read_inode (struct inode *);
extern int ext3_write_inode (struct inode *, int);
struct ext3_new_group_data *input);
extern int ext3_group_extend(struct super_block *sb,
struct ext3_super_block *es,
- unsigned long n_blocks_count);
+ ext3_fsblk_t n_blocks_count);
/* super.c */
extern void ext3_error (struct super_block *, const char *, const char *, ...)
*/
/* dir.c */
-extern struct file_operations ext3_dir_operations;
+extern const struct file_operations ext3_dir_operations;
/* file.c */
extern struct inode_operations ext3_file_inode_operations;
-extern struct file_operations ext3_file_operations;
+extern const struct file_operations ext3_file_operations;
/* namei.c */
extern struct inode_operations ext3_dir_inode_operations;