diff options
| author | Josef Bacik <jbacik@redhat.com> | 2008-07-24 12:17:14 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2008-09-25 11:04:05 -0400 |
| commit | 7b1287662304c3cb05cb38f5e3e2d69f386e8f10 (patch) | |
| tree | bb589bfc3854f801b4098f2f2140e42a2f9e8071 /fs/btrfs/ctree.h | |
| parent | 33268eaf0b3db5e2bd12c0ada81a8e8f87a46d68 (diff) | |
Btrfs: Create orphan inode records to prevent lost files after a crash
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index f87d7263f2d..012ad529cb1 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -74,6 +74,9 @@ struct btrfs_ordered_sum; /* directory objectid inside the root tree */ #define BTRFS_ROOT_TREE_DIR_OBJECTID 6ULL +/* orhpan objectid for tracking unlinked/truncated files */ +#define BTRFS_ORPHAN_OBJECTID -5ULL + /* * All files have objectids higher than this. */ @@ -646,6 +649,9 @@ struct btrfs_root { /* the dirty list is only used by non-reference counted roots */ struct list_head dirty_list; + + spinlock_t orphan_lock; + struct list_head orphan_list; }; /* @@ -657,6 +663,7 @@ struct btrfs_root { #define BTRFS_INODE_ITEM_KEY 1 #define BTRFS_INODE_REF_KEY 2 #define BTRFS_XATTR_ITEM_KEY 8 +#define BTRFS_ORPHAN_ITEM_KEY 9 /* reserve 2-15 close to the inode for later flexibility */ /* @@ -1560,6 +1567,13 @@ struct btrfs_dir_item *btrfs_lookup_xattr(struct btrfs_trans_handle *trans, struct btrfs_path *path, u64 dir, const char *name, u16 name_len, int mod); + +/* orphan.c */ +int btrfs_insert_orphan_item(struct btrfs_trans_handle *trans, + struct btrfs_root *root, u64 offset); +int btrfs_del_orphan_item(struct btrfs_trans_handle *trans, + struct btrfs_root *root, u64 offset); + /* inode-map.c */ int btrfs_find_free_objectid(struct btrfs_trans_handle *trans, struct btrfs_root *fs_root, |