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From: Jeff King <>
Subject: [PATCH 4/4] transport: mark unused parameters in fetch_refs_from_bundle()
Date: Fri, 17 Mar 2023 15:17:18 -0400	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

We don't look at the "to_fetch" or "nr_heads" parameters at all. At
first glance this seems like a bug (or at least pessimisation), because
it means we fetch more objects from the bundle than we actually need.
But the bundle does not have any way of computing the set of reachable
objects itself (we'd have to pull all of the objects out to walk them).
And anyway, we've probably already paid most of the cost of grabbing the
objects, since we must copy the bundle locally before accessing it.

So it's perfectly reasonable for the bundle code to just pull everything
into the local object store. Unneeded objects can be dropped later via
gc, etc.

But we should mark these unused parameters as such to avoid the wrath of

Signed-off-by: Jeff King <>
 transport.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/transport.c b/transport.c
index 81950bf755f..c5abf26f31e 100644
--- a/transport.c
+++ b/transport.c
@@ -167,7 +167,8 @@ static struct ref *get_refs_from_bundle(struct transport *transport,
 static int fetch_refs_from_bundle(struct transport *transport,
-			       int nr_heads, struct ref **to_fetch)
+				  int nr_heads UNUSED,
+				  struct ref **to_fetch UNUSED)
 	struct bundle_transport_data *data = transport->data;
 	struct strvec extra_index_pack_args = STRVEC_INIT;

  parent reply	other threads:[~2023-03-17 19:17 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-03-17 19:13 [PATCH 0/4] more unused-parameter fixes Jeff King
2023-03-17 19:16 ` [PATCH 1/4] mailmap: drop debugging code Jeff King
2023-03-17 20:08   ` Eric Sunshine
2023-03-17 21:13     ` Jeff King
2023-03-17 19:16 ` [PATCH 2/4] http: drop unused parameter from start_object_request() Jeff King
2023-03-17 19:17 ` [PATCH 3/4] http: mark unused parameter in fill_active_slot() callbacks Jeff King
2023-03-17 19:17 ` Jeff King [this message]
2023-03-17 20:28   ` [PATCH 4/4] transport: mark unused parameters in fetch_refs_from_bundle() Junio C Hamano

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