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name-hash: don't add directories to name_hash 

Sparse directory entries represent a directory that is outside the
sparse-checkout definition. These are not paths to blobs, so should not
be added to the name_hash table. Instead, they should be added to the
directory hashtable when 'ignore_case' is true.

Add a condition to avoid placing sparse directories into the name_hash
hashtable. This avoids filling the table with extra entries that will
never be queried.

Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Derrick Stolee 2021-04-12 21:08:15 +00:00 committed by Junio C Hamano
parent f5fed74fb2
commit 5f11669586
1 changed files with 5 additions and 2 deletions
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7
name-hash.c
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@ -109,8 +109,11 @@ static void hash_index_entry(struct index_state *istate, struct cache_entry *ce)
if (ce->ce_flags & CE_HASHED)
return;
ce->ce_flags |= CE_HASHED;
hashmap_entry_init(&ce->ent, memihash(ce->name, ce_namelen(ce)));
hashmap_add(&istate->name_hash, &ce->ent);
if (!S_ISSPARSEDIR(ce->ce_mode)) {
hashmap_entry_init(&ce->ent, memihash(ce->name, ce_namelen(ce)));
hashmap_add(&istate->name_hash, &ce->ent);
}
if (ignore_case)
add_dir_entry(istate, ce);