#include <linux/blkdev.h>
#include <linux/magic.h>
+#include <linux/ext4_fs_i.h>
+
/*
* The second extended filesystem constants/structures
*/
#define ext4_debug(f, a...) do {} while (0)
#endif
+#define EXT4_MULTIBLOCK_ALLOCATOR 1
+
+/* prefer goal again. length */
+#define EXT4_MB_HINT_MERGE 1
+/* blocks already reserved */
+#define EXT4_MB_HINT_RESERVED 2
+/* metadata is being allocated */
+#define EXT4_MB_HINT_METADATA 4
+/* first blocks in the file */
+#define EXT4_MB_HINT_FIRST 8
+/* search for the best chunk */
+#define EXT4_MB_HINT_BEST 16
+/* data is being allocated */
+#define EXT4_MB_HINT_DATA 32
+/* don't preallocate (for tails) */
+#define EXT4_MB_HINT_NOPREALLOC 64
+/* allocate for locality group */
+#define EXT4_MB_HINT_GROUP_ALLOC 128
+/* allocate goal blocks or none */
+#define EXT4_MB_HINT_GOAL_ONLY 256
+/* goal is meaningful */
+#define EXT4_MB_HINT_TRY_GOAL 512
+
+struct ext4_allocation_request {
+ /* target inode for block we're allocating */
+ struct inode *inode;
+ /* logical block in target inode */
+ ext4_lblk_t logical;
+ /* phys. target (a hint) */
+ ext4_fsblk_t goal;
+ /* the closest logical allocated block to the left */
+ ext4_lblk_t lleft;
+ /* phys. block for ^^^ */
+ ext4_fsblk_t pleft;
+ /* the closest logical allocated block to the right */
+ ext4_lblk_t lright;
+ /* phys. block for ^^^ */
+ ext4_fsblk_t pright;
+ /* how many blocks we want to allocate */
+ unsigned long len;
+ /* flags. see above EXT4_MB_HINT_* */
+ unsigned long flags;
+};
+
/*
* Special inodes numbers
*/
#endif
#define EXT4_IOC_GETRSVSZ _IOR('f', 5, long)
#define EXT4_IOC_SETRSVSZ _IOW('f', 6, long)
+#define EXT4_IOC_MIGRATE _IO('f', 7)
/*
* ioctl commands in 32 bit emulation
__le32 i_flags; /* File flags */
union {
struct {
- __u32 l_i_reserved1;
+ __le32 l_i_version;
} linux1;
struct {
__u32 h_i_translator;
__le32 i_atime_extra; /* extra Access time (nsec << 2 | epoch) */
__le32 i_crtime; /* File Creation time */
__le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */
+ __le32 i_version_hi; /* high 32 bits for 64-bit version */
};
raw_inode->xtime ## _extra); \
} while (0)
+#define i_disk_version osd1.linux1.l_i_version
+
#if defined(__KERNEL__) || defined(__linux__)
#define i_reserved1 osd1.linux1.l_i_reserved1
#define i_file_acl_high osd2.linux2.l_i_file_acl_high
#define EXT4_ERROR_FS 0x0002 /* Errors detected */
#define EXT4_ORPHAN_FS 0x0004 /* Orphans being recovered */
+/*
+ * Misc. filesystem flags
+ */
+#define EXT2_FLAGS_SIGNED_HASH 0x0001 /* Signed dirhash in use */
+#define EXT2_FLAGS_UNSIGNED_HASH 0x0002 /* Unsigned dirhash in use */
+#define EXT2_FLAGS_TEST_FILESYS 0x0004 /* to test development code */
+
/*
* Mount flags
*/
#define EXT4_MOUNT_USRQUOTA 0x100000 /* "old" user quota */
#define EXT4_MOUNT_GRPQUOTA 0x200000 /* "old" group quota */
#define EXT4_MOUNT_EXTENTS 0x400000 /* Extents support */
-
+#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
+#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
+#define EXT4_MOUNT_I_VERSION 0x2000000 /* i_version support */
+#define EXT4_MOUNT_MBALLOC 0x4000000 /* Buddy allocation support */
/* Compatibility, for having both ext2_fs.h and ext4_fs.h included at once */
#ifndef _LINUX_EXT2_FS_H
#define clear_opt(o, opt) o &= ~EXT4_MOUNT_##opt
#define ext4_test_bit ext2_test_bit
#define ext4_find_first_zero_bit ext2_find_first_zero_bit
#define ext4_find_next_zero_bit ext2_find_next_zero_bit
+#define ext4_find_next_bit ext2_find_next_bit
/*
* Maximal mount counts between two filesystem checks
extern ext4_fsblk_t ext4_new_blocks_old(handle_t *handle, struct inode *inode,
ext4_fsblk_t goal, unsigned long *count, int *errp);
extern void ext4_free_blocks (handle_t *handle, struct inode *inode,
- ext4_fsblk_t block, unsigned long count);
+ ext4_fsblk_t block, unsigned long count, int metadata);
extern void ext4_free_blocks_sb (handle_t *handle, struct super_block *sb,
ext4_fsblk_t block, unsigned long count,
unsigned long *pdquot_freed_blocks);
extern void ext4_check_inodes_bitmap (struct super_block *);
extern unsigned long ext4_count_free (struct buffer_head *, unsigned);
+/* mballoc.c */
+extern long ext4_mb_stats;
+extern long ext4_mb_max_to_scan;
+extern int ext4_mb_init(struct super_block *, int);
+extern int ext4_mb_release(struct super_block *);
+extern ext4_fsblk_t ext4_mb_new_blocks(handle_t *,
+ struct ext4_allocation_request *, int *);
+extern int ext4_mb_reserve_blocks(struct super_block *, int);
+extern void ext4_mb_discard_inode_preallocations(struct inode *);
+extern int __init init_ext4_mballoc(void);
+extern void exit_ext4_mballoc(void);
+extern void ext4_mb_free_blocks(handle_t *, struct inode *,
+ unsigned long, unsigned long, int, unsigned long *);
+
/* inode.c */
int ext4_forget(handle_t *handle, int is_metadata, struct inode *inode,
struct buffer_head *bh_result,
int create, int extend_disksize);
-extern void ext4_read_inode (struct inode *);
+extern struct inode *ext4_iget(struct super_block *, unsigned long);
extern int ext4_write_inode (struct inode *, int);
extern int ext4_setattr (struct dentry *, struct iattr *);
extern void ext4_delete_inode (struct inode *);
unsigned long);
extern long ext4_compat_ioctl (struct file *, unsigned int, unsigned long);
+/* migrate.c */
+extern int ext4_ext_migrate(struct inode *, struct file *, unsigned int,
+ unsigned long);
/* namei.c */
extern int ext4_orphan_add(handle_t *, struct inode *);
extern int ext4_orphan_del(handle_t *, struct inode *);
raw_inode->i_size_high = cpu_to_le32(i_size >> 32);
}
+static inline
+struct ext4_group_info *ext4_get_group_info(struct super_block *sb,
+ ext4_group_t group)
+{
+ struct ext4_group_info ***grp_info;
+ long indexv, indexh;
+ grp_info = EXT4_SB(sb)->s_group_info;
+ indexv = group >> (EXT4_DESC_PER_BLOCK_BITS(sb));
+ indexh = group & ((EXT4_DESC_PER_BLOCK(sb)) - 1);
+ return grp_info[indexv][indexh];
+}
+
+
#define ext4_std_error(sb, errno) \
do { \
if ((errno)) \
extern void ext4_ext_release(struct super_block *);
extern long ext4_fallocate(struct inode *inode, int mode, loff_t offset,
loff_t len);
-static inline int
-ext4_get_blocks_wrap(handle_t *handle, struct inode *inode, sector_t block,
- unsigned long max_blocks, struct buffer_head *bh,
- int create, int extend_disksize)
-{
- int retval;
- if (EXT4_I(inode)->i_flags & EXT4_EXTENTS_FL) {
- retval = ext4_ext_get_blocks(handle, inode,
- (ext4_lblk_t)block, max_blocks,
- bh, create, extend_disksize);
- } else {
- retval = ext4_get_blocks_handle(handle, inode,
- (ext4_lblk_t)block, max_blocks,
- bh, create, extend_disksize);
- }
- return retval;
-}
-
-
+extern int ext4_get_blocks_wrap(handle_t *handle, struct inode *inode,
+ sector_t block, unsigned long max_blocks,
+ struct buffer_head *bh, int create,
+ int extend_disksize);
#endif /* __KERNEL__ */
#endif /* _LINUX_EXT4_FS_H */
git.samba.org / sfrench / cifs-2.6.git / blobdiff