[Ocfs2-tools-devel] [PATCH] libocfs2: Clearing features should clear their dependancies.

[Tao Ma]

Joel Becker wrote:
> The ocfs2_parse_feature() API was not symmetric.  If asked to set a
> feature, it would set the feature and its dependencies.  However, when
> asked to clear a feature, it would not clear the other features that
> depended on it.  Thus, a caller looking at the list of features to clear
> would have to know the reverse dependencies as well.
> 
> This change modifies ocfs2_parse_feature() to include the reverse
> dependencies.  In addition, ocfs2_merge_feature_with_level() takes
> advantage of the change to become simpler.
> 
> Finally, tunefs.ocfs2 now expects the reverse dependencies.  Instead of
> adding them by hand, it makes sure they exist and behaves appropriately.
> 
> Signed-off-by: Joel Becker <joel.becker at oracle.com>
Signed-off-by: Tao Ma <tao.ma at oracle.com>