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| author | Alex Tomas <alex@clusterfs.com> | 2006-10-11 01:21:03 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-10-11 11:14:16 -0700 |
| commit | a86c61812637c7dd0c57e29880cffd477b62f2e7 (patch) | |
| tree | 10737307293afde2999a887cfeac32c7d7584aa7 /include/linux/ext4_fs_i.h | |
| parent | c3fcc8137ce4296ad6ab94f88bd60cbe03d21527 (diff) | |
| download | op-kernel-dev-a86c61812637c7dd0c57e29880cffd477b62f2e7.zip op-kernel-dev-a86c61812637c7dd0c57e29880cffd477b62f2e7.tar.gz | |
[PATCH] ext3: add extent map support
On disk extents format:
/*
* this is extent on-disk structure
* it's used at the bottom of the tree
*/
struct ext3_extent {
__le32 ee_block; /* first logical block extent covers */
__le16 ee_len; /* number of blocks covered by extent */
__le16 ee_start_hi; /* high 16 bits of physical block */
__le32 ee_start; /* low 32 bigs of physical block */
};
Signed-off-by: Alex Tomas <alex@clusterfs.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>
Diffstat (limited to 'include/linux/ext4_fs_i.h')
| -rw-r--r-- | include/linux/ext4_fs_i.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/linux/ext4_fs_i.h b/include/linux/ext4_fs_i.h index 18a6ce9..40ce04a 100644 --- a/include/linux/ext4_fs_i.h +++ b/include/linux/ext4_fs_i.h @@ -65,6 +65,16 @@ struct ext4_block_alloc_info { #define rsv_end rsv_window._rsv_end /* + * storage for cached extent + */ +struct ext4_ext_cache { + __u32 ec_start; + __u32 ec_block; + __u32 ec_len; /* must be 32bit to return holes */ + __u32 ec_type; +}; + +/* * third extended file system inode data in memory */ struct ext4_inode_info { @@ -142,6 +152,9 @@ struct ext4_inode_info { */ struct mutex truncate_mutex; struct inode vfs_inode; + + unsigned long i_ext_generation; + struct ext4_ext_cache i_cached_extent; }; #endif /* _LINUX_EXT4_FS_I */ |
