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From: Stefan Beller <sbeller@google.com>
To: gitster@pobox.com
Cc: git@vger.kernel.org, Stefan Beller <sbeller@google.com>
Subject: [PATCHv4 0/4] Fix --recurse-submodules for submodule worktree changes
Date: Fri,  5 Jan 2018 12:03:00 -0800
Message-ID: <20180105200304.34173-1-sbeller@google.com> (raw)
In-Reply-To: <xmqqo9mahdll.fsf@gitster.mtv.corp.google.com>

v4:
* dropped the patch "t/helper/test-lazy-name-hash: fix compilation"
  (that snuck into v3 by accident, it is already present at
   remotes/origin/jh/memihash-opt, but I am carrying it locally in
   most branches currently.)
* Junio pointed out the micro-optimisation below, both in terms of readability
  as well as performance

diff --git a/unpack-trees.c b/unpack-trees.c
index 7657d6ecdd..96c3327f19 100644
--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -2139,8 +2139,8 @@ int oneway_merge(const struct cache_entry * const *src,
 			    ie_match_stat(o->src_index, old, &st, CE_MATCH_IGNORE_VALID|CE_MATCH_IGNORE_SKIP_WORKTREE))
 				update |= CE_UPDATE;
 		}
-		if (S_ISGITLINK(old->ce_mode) && should_update_submodules() &&
-		    o->update && !verify_uptodate(old, o))
+		if (o->update && S_ISGITLINK(old->ce_mode) &&
+		    should_update_submodules() && !verify_uptodate(old, o))
 			update |= CE_UPDATE;
 		add_entry(o, old, update, 0);
 		return 0;

v3:
Thanks Junio for review of this series!
The only change in this version of the series is

--- a/unpack-trees.c
+++ b/unpack-trees.c
@@ -2140,7 +2140,7 @@ int oneway_merge(const struct cache_entry * const *src,
                                update |= CE_UPDATE;
                }
                if (S_ISGITLINK(old->ce_mode) && should_update_submodules() &&
-                   !verify_uptodate(old, o))
+                   o->update && !verify_uptodate(old, o))
                        update |= CE_UPDATE;
                add_entry(o, old, update, 0);


v2:
I dropped the patch to `same()` as I realized we only need to fix the
oneway_merge function, the others (two, three way merge) are fine as
they have the checks already in place.

The test added in the last patch got slightly larger as now we also test for
newly staged files to be blown away in the submodule.

v1:

The fix is in the last patch, the first patches are just massaging the code
base to make the fix easy.

The second patch fixes a bug in the test, which was ineffective at testing.
The third patch shows the problem this series addresses,
the fourth patch is a little refactoring, which I want to keep separate
as I would expect it to be a performance regression[1].
The first patch is unrelated, but improves the readability of submodule test
cases, which we'd want to improve further.

Thanks,
Stefan

Stefan Beller (4):
  t/lib-submodule-update.sh: clarify test
  t/lib-submodule-update.sh: Fix test ignoring ignored files in
    submodules
  unpack-trees: oneway_merge to update submodules
  submodule: submodule_move_head omits old argument in forced case

 submodule.c               |  4 +++-
 t/lib-submodule-update.sh | 19 +++++++++++++++++--
 unpack-trees.c            |  3 +++
 3 files changed, 23 insertions(+), 3 deletions(-)

-- 
2.16.0.rc0.223.g4a4ac83678-goog


  parent reply index

Thread overview: 38+ messages in thread (expand / mbox.gz / Atom feed / [top])
2017-12-19 22:26 [PATCH 0/5] " Stefan Beller
2017-12-19 22:26 ` [PATCH 1/5] t/lib-submodule-update.sh: clarify test Stefan Beller
2017-12-19 22:26 ` [PATCH 2/5] t/lib-submodule-update.sh: Fix test ignoring ignored files in submodules Stefan Beller
2017-12-22 19:34   ` Junio C Hamano
2017-12-27 19:27     ` Stefan Beller
2017-12-19 22:26 ` [PATCH 3/5] t/lib-submodule-update.sh: add new test for submodule internal change Stefan Beller
2017-12-19 22:31   ` Jonathan Nieder
2017-12-19 22:35     ` Stefan Beller
2017-12-19 22:26 ` [PATCH 4/5] unpack-trees: Fix same() for submodules Stefan Beller
2017-12-19 22:26 ` [PATCH 5/5] submodule: submodule_move_head omits old argument in forced case Stefan Beller
2017-12-19 22:44   ` Jonathan Nieder
2017-12-19 22:54     ` Stefan Beller
2017-12-19 23:15       ` Jonathan Nieder
2017-12-20  0:01       ` Jonathan Nieder
2017-12-20 19:36         ` Stefan Beller
2017-12-20 19:38           ` Stefan Beller
2017-12-27 22:57 ` [PATCHv2 0/5] Fix --recurse-submodules for submodule worktree changes Stefan Beller
2017-12-27 22:57   ` [PATCHv2 1/5] t/helper/test-lazy-name-hash: fix compilation Stefan Beller
2017-12-27 22:57   ` [PATCHv2 2/5] t/lib-submodule-update.sh: clarify test Stefan Beller
2017-12-27 22:57   ` [PATCHv2 3/5] t/lib-submodule-update.sh: Fix test ignoring ignored files in submodules Stefan Beller
2017-12-27 22:57   ` [PATCHv2 4/5] unpack-trees: oneway_merge to update submodules Stefan Beller
2018-01-02 19:43     ` Junio C Hamano
2018-01-02 23:04       ` Stefan Beller
2018-01-03  1:12       ` [PATCHv3 0/5] Fix --recurse-submodules for submodule worktree changes Stefan Beller
2018-01-03  1:12         ` [PATCH 1/5] t/helper/test-lazy-name-hash: fix compilation Stefan Beller
2018-01-03  1:12         ` [PATCH 2/5] t/lib-submodule-update.sh: clarify test Stefan Beller
2018-01-03  1:12         ` [PATCH 3/5] t/lib-submodule-update.sh: Fix test ignoring ignored files in submodules Stefan Beller
2018-01-03  1:12         ` [PATCH 4/5] unpack-trees: oneway_merge to update submodules Stefan Beller
2018-01-03  1:12         ` [PATCH 5/5] submodule: submodule_move_head omits old argument in forced case Stefan Beller
2018-01-03 20:49         ` [PATCHv3 0/5] Fix --recurse-submodules for submodule worktree changes Junio C Hamano
2018-01-03 21:16           ` Stefan Beller
2018-01-05 20:03           ` Stefan Beller [this message]
2018-01-05 20:03             ` [PATCHv4 1/4] t/lib-submodule-update.sh: clarify test Stefan Beller
2018-01-05 20:03             ` [PATCHv4 2/4] t/lib-submodule-update.sh: Fix test ignoring ignored files in submodules Stefan Beller
2018-01-05 20:03             ` [PATCHv4 3/4] unpack-trees: oneway_merge to update submodules Stefan Beller
2018-01-05 20:03             ` [PATCHv4 4/4] submodule: submodule_move_head omits old argument in forced case Stefan Beller
2018-01-09 22:45             ` [PATCHv4 0/4] Fix --recurse-submodules for submodule worktree changes Junio C Hamano
2017-12-27 22:57   ` [PATCHv2 5/5] submodule: submodule_move_head omits old argument in forced case Stefan Beller

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