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From: Junio C Hamano <gitster@pobox.com>
To: "Kristofer Karlsson via GitGitGadget" <gitgitgadget@gmail.com>
Cc: git@vger.kernel.org,  Kristofer Karlsson <krka@spotify.com>
Subject: Re: [PATCH v5 00/10] commit-reach: terminate merge-base walk when one side is exhausted
Date: Wed, 01 Jul 2026 13:06:44 -0700	[thread overview]
Message-ID: <xmqqpl16mq3v.fsf@gitster.g> (raw)
In-Reply-To: <pull.2149.v5.git.1782923832.gitgitgadget@gmail.com> (Kristofer Karlsson via GitGitGadget's message of "Wed, 01 Jul 2026 16:37:01 +0000")

"Kristofer Karlsson via GitGitGadget" <gitgitgadget@gmail.com>
writes:

> Changes since v4:
>
>  * New patch 2/10: added test_trace2_data_singular helper to
>    test-lib-functions.sh. Shows expected/actual values on assertion failure
>    instead of a silent grep failure. Makes iterating on step counts much
>    easier.
>
>  * New patch 6/10: added clock-skew topologies (se-, se2-) that expose
>    side-exhaustion bugs when the commit-date ordering fallback fires with a
>    v1 commit graph. All topologies use a shared skew_commit helper. Includes
>    step count assertions for edge-case tests from patch 3.
>
>  * Folded the nonstale_queue dedup wrapper removal (previously separate
>    patch 6/8) into the paint_state introduction in patch 7/10.
>
>  * New patch 10/10: remove the commit-date ordering fallback in
>    paint_down_to_common(). The fallback (091cf18e) was a performance
>    optimization for v1 commit graphs, but it breaks the generation ordering
>    invariant that both the side-exhaustion and single-result optimizations
>    depend on. With side-exhaustion in place, the fallback is no longer
>    needed. If kept, this supersedes the separate "commit-reach: fix
>    !FIND_ALL early exit with v1 commit graph" topic.

I thought that the plan in

https://lore.kernel.org/git/CAL71e4P4GbYYv1LdarAbeodm06q841wj4gdGpn0QYADQjOB5gw@mail.gmail.com/

was to make this v5 on top of kk/commit-reach-find-all-fix topic.

I tried to prepare a merge of kk/commit-reach-find-all-fix into
v2.55.0 and then used "git am -3" to apply these patches on top,
but there were conflicts, and after resolving 7/10, t6600 stops
passing.

Perhaps it is best to ask you rebase these patches on top of a merge
of kk/commit-reach-find-all-fix into v2.55.0?

  parent reply	other threads:[~2026-07-01 20:06 UTC|newest]

Thread overview: 104+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-06-20 10:36 [PATCH/RFC 0/6] commit-reach: terminate merge-base walk when one side is exhausted Kristofer Karlsson via GitGitGadget
2026-06-20 10:36 ` [PATCH/RFC 1/6] commit-reach: decouple ahead_behind from nonstale_queue Kristofer Karlsson via GitGitGadget
2026-06-22 18:00   ` Derrick Stolee
2026-06-22 18:53     ` Kristofer Karlsson
2026-06-20 10:36 ` [PATCH/RFC 2/6] commit-reach: introduce struct paint_queue with per-side counters Kristofer Karlsson via GitGitGadget
2026-06-22 18:10   ` Derrick Stolee
2026-06-22 19:14     ` Kristofer Karlsson
2026-06-22 20:23       ` Derrick Stolee
2026-06-23 10:13         ` Kristofer Karlsson
2026-06-23 13:50           ` Derrick Stolee
2026-06-23 14:09             ` Kristofer Karlsson
2026-06-23 14:17               ` Derrick Stolee
2026-06-24 11:25                 ` Kristofer Karlsson
2026-06-20 10:36 ` [PATCH/RFC 3/6] commit-reach: terminate merge-base walk when one paint side is exhausted Kristofer Karlsson via GitGitGadget
2026-06-22 18:12   ` Derrick Stolee
2026-06-22 19:19     ` Kristofer Karlsson
2026-06-22 20:26       ` Derrick Stolee
2026-06-22 21:03         ` Kristofer Karlsson
2026-06-23 13:40           ` Derrick Stolee
2026-06-20 10:36 ` [PATCH/RFC 4/6] t6600: add test cases for side-exhaustion edge cases Elijah Newren via GitGitGadget
2026-06-22 18:15   ` Derrick Stolee
2026-06-22 19:25     ` Kristofer Karlsson
2026-06-22 20:28       ` Derrick Stolee
2026-06-20 10:36 ` [PATCH/RFC 5/6] t6099, t6600: add side-exhaustion regression tests Kristofer Karlsson via GitGitGadget
2026-06-22 18:16   ` Derrick Stolee
2026-06-20 10:36 ` [PATCH/RFC 6/6] Documentation/technical: add paint-down-to-common doc Kristofer Karlsson via GitGitGadget
2026-06-22 18:21   ` Derrick Stolee
2026-06-22 19:30     ` Kristofer Karlsson
2026-06-22 18:22 ` [PATCH/RFC 0/6] commit-reach: terminate merge-base walk when one side is exhausted Derrick Stolee
2026-06-24 12:14 ` [PATCH v2 0/7] " Kristofer Karlsson via GitGitGadget
2026-06-24 12:14   ` [PATCH v2 1/7] Documentation/technical: add paint-down-to-common doc Kristofer Karlsson via GitGitGadget
2026-06-24 17:09     ` Junio C Hamano
2026-06-24 12:14   ` [PATCH v2 2/7] t6600: add test cases for side-exhaustion edge cases Elijah Newren via GitGitGadget
2026-06-24 13:43     ` Derrick Stolee
2026-06-24 14:33       ` Kristofer Karlsson
2026-06-24 12:14   ` [PATCH v2 3/7] t6099, t6600: add side-exhaustion regression tests Kristofer Karlsson via GitGitGadget
2026-06-24 12:14   ` [PATCH v2 4/7] commit-reach: add trace2 instrumentation to paint_down_to_common() Kristofer Karlsson via GitGitGadget
2026-06-24 13:41     ` Derrick Stolee
2026-06-24 14:31       ` Kristofer Karlsson
2026-06-24 12:14   ` [PATCH v2 5/7] commit-reach: introduce struct paint_state with per-side counters Kristofer Karlsson via GitGitGadget
2026-06-24 13:54     ` Derrick Stolee
2026-06-24 14:38       ` Kristofer Karlsson
2026-06-24 12:14   ` [PATCH v2 6/7] commit-reach: remove unused nonstale_queue dedup wrappers Kristofer Karlsson via GitGitGadget
2026-06-24 13:55     ` Derrick Stolee
2026-06-24 12:14   ` [PATCH v2 7/7] commit-reach: terminate merge-base walk when one paint side is exhausted Kristofer Karlsson via GitGitGadget
2026-06-24 14:02     ` Derrick Stolee
2026-06-24 14:47       ` Kristofer Karlsson
2026-06-24 15:07         ` Derrick Stolee
2026-06-24 13:34   ` [PATCH v2 0/7] commit-reach: terminate merge-base walk when one " Derrick Stolee
2026-06-24 14:25     ` Kristofer Karlsson
2026-06-24 14:09   ` Derrick Stolee
2026-06-26 13:07   ` [PATCH v3 0/8] " Kristofer Karlsson via GitGitGadget
2026-06-26 13:07     ` [PATCH v3 1/8] Documentation/technical: add paint-down-to-common doc Kristofer Karlsson via GitGitGadget
2026-06-26 13:07     ` [PATCH v3 2/8] t6600: add test cases for side-exhaustion edge cases Elijah Newren via GitGitGadget
2026-06-26 13:08     ` [PATCH v3 3/8] t6099, t6600: add side-exhaustion regression tests Kristofer Karlsson via GitGitGadget
2026-06-26 13:08     ` [PATCH v3 4/8] commit-reach: add trace2 instrumentation to paint_down_to_common() Kristofer Karlsson via GitGitGadget
2026-06-26 14:31       ` Derrick Stolee
2026-06-26 14:35         ` Kristofer Karlsson
2026-06-26 13:08     ` [PATCH v3 5/8] commit-reach: introduce struct paint_state with per-side counters Kristofer Karlsson via GitGitGadget
2026-06-26 21:13       ` René Scharfe
2026-06-26 21:57         ` Kristofer Karlsson
2026-06-26 13:08     ` [PATCH v3 6/8] commit-reach: remove unused nonstale_queue dedup wrappers Kristofer Karlsson via GitGitGadget
2026-06-26 13:08     ` [PATCH v3 7/8] commit-reach: terminate merge-base walk when one paint side is exhausted Kristofer Karlsson via GitGitGadget
2026-06-26 14:29       ` Kristofer Karlsson
2026-06-26 14:32         ` Derrick Stolee
2026-06-26 16:41           ` Kristofer Karlsson
2026-06-26 14:35       ` Derrick Stolee
2026-06-26 14:39         ` Kristofer Karlsson
2026-06-26 13:08     ` [PATCH v3 8/8] commit-reach: move min_generation check into paint_queue_get() Kristofer Karlsson via GitGitGadget
2026-06-26 14:42       ` Derrick Stolee
2026-06-26 14:53         ` Kristofer Karlsson
2026-06-26 14:58           ` Derrick Stolee
2026-06-26 16:36     ` [PATCH v3 0/8] commit-reach: terminate merge-base walk when one side is exhausted Junio C Hamano
2026-06-26 16:43       ` Kristofer Karlsson
2026-06-26 18:43         ` Junio C Hamano
2026-06-28 12:25     ` [PATCH v4 " Kristofer Karlsson via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 1/8] Documentation/technical: add paint-down-to-common doc Kristofer Karlsson via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 2/8] t6600: add test cases for side-exhaustion edge cases Elijah Newren via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 3/8] t6099, t6600: add side-exhaustion regression tests Kristofer Karlsson via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 4/8] commit-reach: add trace2 instrumentation to paint_down_to_common() Kristofer Karlsson via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 5/8] commit-reach: introduce struct paint_state with per-side counters Kristofer Karlsson via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 6/8] commit-reach: remove unused nonstale_queue dedup wrappers Kristofer Karlsson via GitGitGadget
2026-06-29  5:25         ` SZEDER Gábor
2026-06-29 10:09           ` Kristofer Karlsson
2026-06-28 12:25       ` [PATCH v4 7/8] commit-reach: terminate merge-base walk when one paint side is exhausted Kristofer Karlsson via GitGitGadget
2026-06-28 12:25       ` [PATCH v4 8/8] commit-reach: move min_generation check into paint_queue_get() Kristofer Karlsson via GitGitGadget
2026-06-28 15:15         ` Derrick Stolee
2026-06-28 15:16       ` [PATCH v4 0/8] commit-reach: terminate merge-base walk when one side is exhausted Derrick Stolee
2026-06-29 12:11         ` Kristofer Karlsson
2026-06-29 12:40           ` Derrick Stolee
2026-06-29 12:59             ` Kristofer Karlsson
2026-07-01 16:37       ` [PATCH v5 00/10] " Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 01/10] Documentation/technical: add paint-down-to-common doc Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 02/10] test-lib-functions: improve diagnostic output for trace2 data assertions Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 03/10] t6600: add test cases for side-exhaustion edge cases Elijah Newren via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 04/10] t6099, t6600: add side-exhaustion regression tests Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 05/10] commit-reach: add trace2 instrumentation to paint_down_to_common() Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 06/10] t6600: add clock-skew topologies and step counts for edge cases Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 07/10] commit-reach: introduce struct paint_state with per-side counters Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 08/10] commit-reach: terminate merge-base walk when one paint side is exhausted Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 09/10] commit-reach: move min_generation check into paint_queue_get() Kristofer Karlsson via GitGitGadget
2026-07-01 16:37         ` [PATCH v5 10/10] commit-reach: remove commit-date ordering fallback Kristofer Karlsson via GitGitGadget
2026-07-01 20:06         ` Junio C Hamano [this message]
2026-07-01 21:15           ` [PATCH v5 00/10] commit-reach: terminate merge-base walk when one side is exhausted Kristofer Karlsson

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