As it exists right now, the commit-graph feature may provide
inconsistent results when combined with commit grafts, replace objects,
and shallow clones. Update the design document to discuss why these
interactions are difficult to reconcile and how we will avoid errors by
preventing updates to and reads from the commit-graph file when these
other features exist.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
The commit-graph feature is now integrated with 'fsck' and 'gc',
so remove those items from the "Future Work" section of the
commit-graph design document.
Also remove the section on lazy-loading trees, as that was completed
in an earlier patch series.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
We now calculate generation numbers in the commit-graph file and use
them in paint_down_to_common().
Expand the section on generation numbers to discuss how the three
special generation numbers GENERATION_NUMBER_INFINITY, _ZERO, and
_MAX interact with other generation numbers.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Add Documentation/technical/commit-graph.txt with details of the planned
commit graph feature, including future plans.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
