Add btrfs_del_orphan_item for the later subvolume undelete.
Signed-off-by: Lu Fengqi <lufq.f...@cn.fujitsu.com>
---
ctree.h | 2 ++
inode.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 32 insertions(+)
diff --git a/ctree.h b/ctree.h
index 17cdac76c58c..84bad186a349 100644
--- a/ctree.h
+++ b/ctree.h
@@ -2784,6 +2784,8 @@ int btrfs_unlink(struct btrfs_trans_handle *trans, struct
btrfs_root *root,
int btrfs_add_orphan_item(struct btrfs_trans_handle *trans,
struct btrfs_root *root, struct btrfs_path *path,
u64 ino);
+int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 offset);
int btrfs_mkdir(struct btrfs_trans_handle *trans, struct btrfs_root *root,
char *name, int namelen, u64 parent_ino, u64 *ino, int mode);
struct btrfs_root *btrfs_mksubvol(struct btrfs_root *root, const char *base,
diff --git a/inode.c b/inode.c
index 2398bca4a109..8d0812c7cf50 100644
--- a/inode.c
+++ b/inode.c
@@ -262,6 +262,36 @@ int btrfs_add_orphan_item(struct btrfs_trans_handle *trans,
return btrfs_insert_empty_item(trans, root, path, &key, 0);
}
+int btrfs_del_orphan_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 offset)
+{
+ struct btrfs_path *path;
+ struct btrfs_key key;
+ int ret = 0;
+
+ key.objectid = BTRFS_ORPHAN_OBJECTID;
+ key.type = BTRFS_ORPHAN_ITEM_KEY;
+ key.offset = offset;
+
+ path = btrfs_alloc_path();
+ if (!path)
+ return -ENOMEM;
+
+ ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
+ if (ret < 0)
+ goto out;
+ if (ret) {
+ ret = -ENOENT;
+ goto out;
+ }
+
+ ret = btrfs_del_item(trans, root, path);
+
+out:
+ btrfs_free_path(path);
+ return ret;
+}
+
/*
* Unlink an inode, which will remove its backref and corresponding dir_index/
* dir_item if any of them exists.
--
2.16.1
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