[PATCH 0/4] pack-bitmap: permute existing namehash values
From: Taylor Blau <hidden>
Date: 2021-09-07 21:17:55
This short series depends on tb/multi-pack-bitmaps and is used to propagate the hashcache between .bitmap files when generating multi-pack reachability bitmaps. The gist is that single pack bitmaps get the namehash values via the traversal used to generate the pack, but there is no such traversal for MIDX bitmaps, and thus the hash-cache extension (if we were to write it) would contain all zeros. This series teaches the pack-bitmap code how to permute the hashcache values from an existing bitmap into the new one. This doesn't keep the hashcache up-to-date, but it at least prevents existing data from falling out when generating a MIDX bitmap. Taylor Blau (4): t/helper/test-bitmap.c: add 'dump-hashes' mode pack-bitmap.c: propagate namehash values from existing bitmaps midx.c: respect 'pack.writeBitmapHashcache' when writing bitmaps t5326: test propagating hashcache values Documentation/config/pack.txt | 4 ++++ builtin/multi-pack-index.c | 21 ++++++++++++++++++++ midx.c | 6 +++++- midx.h | 1 + pack-bitmap.c | 36 +++++++++++++++++++++++++++++------ pack-bitmap.h | 1 + t/helper/test-bitmap.c | 10 +++++++++- t/t5326-multi-pack-bitmaps.sh | 32 +++++++++++++++++++++++++++++++ 8 files changed, 103 insertions(+), 8 deletions(-) -- 2.33.0.96.g73915697e6