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pack-objects: create pack.useSparse setting

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The '--sparse' flag in 'git pack-objects' changes the algorithm
used to enumerate objects to one that is faster for individual
users pushing new objects that change only a small cone of the
working directory. The sparse algorithm is not recommended for a
server, which likely sends new objects that appear across the
entire working directory.

Create a 'pack.useSparse' setting that enables this new algorithm.
This allows 'git push' to use this algorithm without passing a
'--sparse' flag all the way through four levels of run_command()
calls.

If the '--no-sparse' flag is set, then this config setting is
overridden.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee
2019-01-16 10:26:00 -08:00
committed by Junio C Hamano
parent d5d2e93577
commit 3d036eb0d2
3 changed files with 28 additions and 0 deletions
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4
builtin/pack-objects.c
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@@ -2711,6 +2711,10 @@ static int git_pack_config(const char *k, const char *v, void *cb)
use_bitmap_index_default = git_config_bool(k, v);
return 0;
}
if (!strcmp(k, "pack.usesparse")) {
sparse = git_config_bool(k, v);
return 0;
}
if (!strcmp(k, "pack.threads")) {
delta_search_threads = git_config_int(k, v);
if (delta_search_threads < 0)