diff options
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 f87d7263f2d7..012ad529cb18 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, |