Re: [PATCH v4 2/4] sparse-index: avoid unnecessary cache tree clearing

Derrick Stolee [off-list ref] writes:

I think in this pruned form, the cache-tree is valid and serves all of
the roles it was designed for. We can quickly compute the root tree in
'git commit'. We can navigate the cache-tree in traverse_by_cache_tree()
to accurately describe the trees in the index. These things are tested
in t1092 and the p2000 performance test.

OK, then I was worried too much.  Thanks for clarifying.