Re: [PATCH v4 3/3] untracked cache: fix entry invalidation

> On Wed, 2015-08-19 at 20:01 +0700, Nguyễn Thái Ngọc Duy wrote:
>> First, the current code in untracked_cache_invalidate_path() is wrong
>> because it can only handle paths "a" or "a/b", not "a/b/c" because
>> lookup_untracked() only looks for entries directly under the given
>> directory. In the last case, it will look for the entry "b/c" in
>> directory "a" instead. This means if you delete or add an entry in a
>> subdirectory, untracked cache may become out of date because it does not
>> invalidate properly. This is noticed by David Turner.
>> 
>> The second problem is about invalidation inside a fully untracked/excluded
>> directory. In this case we may have to invalidate back to root. See the
>> comment block for detail.
>
> LGTM.