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| author | Chris Mason <chris.mason@oracle.com> | 2007-08-30 08:50:51 -0400 |
|---|---|---|
| committer | David Woodhouse <dwmw2@hera.kernel.org> | 2007-08-30 08:50:51 -0400 |
| commit | 07157aacb1ecd394a5494910b5f80d7e7d407d37 (patch) | |
| tree | dc27c45e8b24167b13d89b0e7c3c3a94b293ce29 /fs/btrfs/extent_map.h | |
| parent | 95e0528919cb0c7635b37496e0ad1c41e4c0dd7c (diff) | |
| download | linux-07157aacb1ecd394a5494910b5f80d7e7d407d37.tar.bz2 | |
Btrfs: Add file data csums back in via hooks in the extent map code
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/extent_map.h')
| -rw-r--r-- | fs/btrfs/extent_map.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/fs/btrfs/extent_map.h b/fs/btrfs/extent_map.h index e91a2e9619ee..0eae6c420acb 100644 --- a/fs/btrfs/extent_map.h +++ b/fs/btrfs/extent_map.h @@ -6,12 +6,19 @@ #define EXTENT_MAP_INLINE (u64)-2 #define EXTENT_MAP_DELALLOC (u64)-1 +struct extent_map_ops { + int (*fill_delalloc)(struct inode *inode, u64 start, u64 end); + int (*writepage_io_hook)(struct page *page, u64 start, u64 end); + int (*readpage_io_hook)(struct page *page, u64 start, u64 end); + int (*readpage_end_io_hook)(struct page *page, u64 start, u64 end); +}; + struct extent_map_tree { struct rb_root map; struct rb_root state; struct address_space *mapping; rwlock_t lock; - int (*fill_delalloc)(struct inode *inode, u64 start, u64 end); + struct extent_map_ops *ops; }; /* note, this must start with the same fields as fs/extent_map.c:tree_entry */ @@ -36,6 +43,10 @@ struct extent_state { wait_queue_head_t wq; atomic_t refs; unsigned long state; + + /* for use by the FS */ + u64 private; + struct list_head list; }; @@ -89,4 +100,6 @@ int extent_commit_write(struct extent_map_tree *tree, struct inode *inode, struct page *page, unsigned from, unsigned to); int set_range_dirty(struct extent_map_tree *tree, u64 start, u64 end); +int set_state_private(struct extent_map_tree *tree, u64 start, u64 private); +int get_state_private(struct extent_map_tree *tree, u64 start, u64 *private); #endif |