The struct commit is used in many contexts. However, members generation
and graph_pos are only used for commit-graph related operations and
otherwise waste memory.
This wastage would have been more pronounced as transistion to
generation number v2, which uses 64-bit generation number instead of
current 32-bits.
The third patch ("commit: convert commit->graph_pos to a slab",
2020-06-04) is currently failing diff-submodule related tests (t4041,
t4059 and t4060) for gcc [1]. I am going to send a second version soon,
fixing that.
[1]: https://travis-ci.com/github/abhishekkumar2718/git/jobs/343441189
Abhishek Kumar (3):
commit: introduce helpers for generation slab
commit: convert commit->generation to a slab
commit: convert commit->graph_pos to a slab
alloc.c | 2 -
blame.c | 2 +-
bloom.c | 6 +-
commit-graph.c | 116 +++++++++++++++++++++-------
commit-graph.h | 8 ++
commit-reach.c | 50 ++++++------
commit.c | 6 +-
commit.h | 6 --
contrib/coccinelle/generation.cocci | 12 +++
contrib/coccinelle/graph_pos.cocci | 12 +++
revision.c | 16 ++--
11 files changed, 158 insertions(+), 78 deletions(-)
create mode 100644 contrib/coccinelle/generation.cocci
create mode 100644 contrib/coccinelle/graph_pos.cocci
--
2.27.0
