diff options
| author | Omar Sandoval <osandov@fb.com> | 2016-11-14 10:43:21 -0800 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2016-11-23 11:07:05 +0100 |
| commit | 981441102199c5c9e3fca84ff3e723ddfa78de01 (patch) | |
| tree | 151141eee76739f9ba94415cfb635004d3b6d478 /root-tree.c | |
| parent | 441d8aea8ff939dcd4e37286831d42c91610b5eb (diff) | |
btrfs-progs: add btrfs_clear_free_space_tree() from the kernel
Reviewed-by: Qu Wenruo <quwenruo@cn.fujitsu.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'root-tree.c')
| -rw-r--r-- | root-tree.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/root-tree.c b/root-tree.c index cca424e3..ab01a140 100644 --- a/root-tree.c +++ b/root-tree.c @@ -143,6 +143,31 @@ int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root return ret; } +/* drop the root item for 'key' from 'root' */ +int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root, + struct btrfs_key *key) +{ + struct btrfs_path *path; + int ret; + + 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 != 0) { + ret = -ENOENT; + goto out; + } + + ret = btrfs_del_item(trans, root, path); +out: + btrfs_free_path(path); + return ret; +} + /* * add a btrfs_root_ref item. type is either BTRFS_ROOT_REF_KEY * or BTRFS_ROOT_BACKREF_KEY. |