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 -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html