path: root/inode.c
diff options
authorQu Wenruo <>2014-12-09 16:27:32 +0800
committerDavid Sterba <>2014-12-10 13:52:28 +0100
commit55fea7186ca8aa7faf442d3117478d44a4ec0eb4 (patch)
tree5eba64960231ad05bd71ca70ea8f77fb0a35c791 /inode.c
parent1581d7e5db9278a3aef5ff88301a9866b57cd5ad (diff)
btrfs-progs: Add inode item rebuild function.
Add a basic inode item rebuild function for I_ERR_NO_INODE_ITEM. The main use case is to repair btrfs which fs root has corrupted leaf, but it is already working for case if the corrupteed fs root leaf/node contains no inode extent_data. The repair needs 3 elements for inode rebuild: 1. inode number This is quite easy, existing inode_record codes will detect it quite well. 2. inode type This is the trick part. The only reliable method is to recovery it from parent's dir_index/item. The remaining method will search for regular file extent for FILE type or child's backref for DIR(todo). Fallback will be FILE. Inode name(inode_ref) will be recoverd by nlink repair function. This is just a fundamental implement, some advanced recovery can be improved later with btrfs-progs infrastructure change. Signed-off-by: Qu Wenruo <> Signed-off-by: David Sterba <>
Diffstat (limited to 'inode.c')
1 files changed, 2 insertions, 3 deletions
diff --git a/inode.c b/inode.c
index ff1be48c..a37f7f33 100644
--- a/inode.c
+++ b/inode.c
@@ -458,9 +458,8 @@ static void fill_inode_item(struct btrfs_trans_handle *trans,
* its backref.
* The backref is added by btrfs_add_link().
-static int btrfs_new_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
- u64 ino, u32 mode)
+int btrfs_new_inode(struct btrfs_trans_handle *trans, struct btrfs_root *root,
+ u64 ino, u32 mode)
struct btrfs_inode_item inode_item = {0};
int ret = 0;