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Diffstat (limited to 'fs/btrfs/root-tree.c')
| -rw-r--r-- | fs/btrfs/root-tree.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c index e9be3abcb36..dbe20d4c6ea 100644 --- a/fs/btrfs/root-tree.c +++ b/fs/btrfs/root-tree.c @@ -300,6 +300,22 @@ int btrfs_del_root_ref(struct btrfs_trans_handle *trans, return ret; } +int btrfs_find_root_ref(struct btrfs_root *tree_root, + struct btrfs_path *path, + u64 root_id, u64 ref_id) +{ + struct btrfs_key key; + int ret; + + key.objectid = root_id; + key.type = BTRFS_ROOT_REF_KEY; + key.offset = ref_id; + + ret = btrfs_search_slot(NULL, tree_root, &key, path, 0, 0); + return ret; +} + + /* * add a btrfs_root_ref item. type is either BTRFS_ROOT_REF_KEY * or BTRFS_ROOT_BACKREF_KEY. |