[PATCH 0/3] btrfs: small fixes related to qgroup deletion

[Qu Wenruo <wqu@suse.com>]

There is a recent bug report that when deleting a qgroup that is not
fully exclusively owned, it can make all future qgroup operations to
fail.

It turns out to be a problem handling "ret > 0" cases when deleting a
qgroup.
The first patch is the root fix.

The seconds patch is to improve the error reporting of
quick_update_accounting().

Finally there is a pre-existing problem exposed by that "ret > 0"
handling, that if we use btrfs_remove_qgroup() on a qgroup that only
exists in the rb-tree, it will return -ENOENT meanwhile still deletes
the in-memory qgroup.

Fix that -ENOENT leak in the last patch.

Qu Wenruo (3):
  btrfs: qgroup: do not treat "ret > 0" as error when deleting a qgroup
  btrfs: qgroup: use qgroup_mark_inconsistent() in
    quick_update_accounting()
  btrfs: qgroup: do not leak -ENOENT from btrfs_remove_qgroup()

 fs/btrfs/qgroup.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

-- 
2.55.0