sg/commit-graph-cleanups (was Re: What's cooking in git.git (Jun 2020, #03; Wed, 17))

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On 6/18/2020 2:35 AM, Junio C Hamano wrote:
> * sg/commit-graph-cleanups (2020-06-17) 18 commits

You have this topic marked with "Code cleanup" which is definitely
true of the first submission, but not the second.

>  - commit-graph: persist existence of changed-paths
>  - commit-graph: change test to die on parse, not load

These two add an important behavior change to persist the changed-paths
after a user opts-in to using them.

>  - bloom: enforce a minimum size of 8 bytes
>  - commit-graph: check all leading directories in changed path Bloom filters

These two have meaningful performance gains.

>  - commit-graph: check chunk sizes after writing
>  - commit-graph: simplify chunk writes into loop
>  - commit-graph: unify the signatures of all write_graph_chunk_*() functions
>  - commit-graph: place bloom_settings in context

These four (from the second series) _are_ cleanups, but were harder to
apply than the others from the first series.

>  - commit-graph: simplify write_commit_graph_file() #2
>  - commit-graph: simplify write_commit_graph_file() #1
>  - commit-graph: simplify parse_commit_graph() #2
>  - commit-graph: simplify parse_commit_graph() #1
>  - commit-graph: clean up #includes
>  - diff.h: drop diff_tree_oid() & friends' return value
>  - commit-slab: add a function to deep free entries on the slab
>  - commit-graph-format.txt: all multi-byte numbers are in network byte order
>  - commit-graph: fix parsing the Chunk Lookup table
>  - tree-walk.c: don't match submodule entries for 'submod/anything'

These are all cleanups from the first series.

In summary, if you would like to keep these together as a single
topic, then perhaps this summary might be good:

	The changed-path Bloom filter is improved using ideas from
	an independent implementation.

Thanks,
-Stolee



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