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From: Junio C Hamano <gitster@pobox.com>
To: Thomas Gummerer <t.gummerer@gmail.com>
Cc: git@vger.kernel.org, "Lars Schneider" <larsxschneider@gmail.com>,
	"Brandon Williams" <bmwill@google.com>,
	"Jeff King" <peff@peff.net>,
	"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>,
	"SZEDER Gábor" <szeder.dev@gmail.com>
Subject: Re: [PATCH v3 1/3] read-cache: fix reading the shared index for other repos
Date: Sun, 21 Jan 2018 22:14:43 -0800	[thread overview]
Message-ID: <xmqqpo62mncc.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20180120115819.GR2641@hank> (Thomas Gummerer's message of "Sat, 20 Jan 2018 11:58:19 +0000")

Thomas Gummerer <t.gummerer@gmail.com> writes:

> On 01/19, Junio C Hamano wrote:
>> Thomas Gummerer <t.gummerer@gmail.com> writes:
>> 
>> > read_cache_from() defaults to using the gitdir of the_repository.  As it
>> > is mostly a convenience macro, having to pass get_git_dir() for every
>> > call seems overkill, and if necessary users can have more control by
>> > using read_index_from().
>> 
>> This was a bit painful change, given that some changes in flight do
>> add new callsites to read_index_from() and they got the function
>> changed under their feet.
>
> Sorry about that.  Is there any way to make such a change less painful
> in the future?

One way is to do for read_index_from() what you did for the existing
users of read_cache_from().  Introduce a _new_ helper that will not
be known for any existing topics in flight, and use that to make the
existing API a thin wrapper around it.

I _think_ I got it right with evil merge, so unless this fix needs
to be delayed for extended period of time for whatever reason while
any more new callers of the function appears (which is unlikely), we
should be OK ;-)

Thanks.

  reply	other threads:[~2018-01-22  6:14 UTC|newest]

Thread overview: 95+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-12-10 21:21 [PATCH 0/3] fixes for split index mode Thomas Gummerer
2017-12-10 21:22 ` [PATCH 1/3] repository: fix repo_read_index with submodules Thomas Gummerer
2017-12-11 18:54   ` Brandon Williams
2017-12-11 20:37     ` Thomas Gummerer
2017-12-10 21:22 ` [PATCH 2/3] prune: fix pruning with multiple worktrees and split index Thomas Gummerer
2017-12-11 19:09   ` Brandon Williams
2017-12-11 21:39     ` Thomas Gummerer
2017-12-10 21:22 ` [PATCH 3/3] travis: run tests with GIT_TEST_SPLIT_INDEX Thomas Gummerer
2017-12-10 23:37   ` Eric Sunshine
2017-12-11 21:09   ` SZEDER Gábor
2017-12-11 21:42     ` Thomas Gummerer
2017-12-12 15:54       ` Lars Schneider
2017-12-12 19:15         ` Junio C Hamano
2017-12-12 20:15           ` Thomas Gummerer
2017-12-12 20:51             ` Junio C Hamano
2017-12-13 23:21               ` Thomas Gummerer
2017-12-13 17:21           ` Lars Schneider
2017-12-13 17:38             ` Junio C Hamano
2017-12-13 17:46               ` Lars Schneider
2017-12-13 23:28                 ` Thomas Gummerer
2017-12-17 22:51 ` [PATCH v2 0/3] fixes for split index mode Thomas Gummerer
2017-12-17 22:51   ` [PATCH v2 1/3] repository: fix repo_read_index with submodules Thomas Gummerer
2017-12-18 18:01     ` Brandon Williams
2017-12-18 23:05       ` Thomas Gummerer
2017-12-18 23:05         ` Brandon Williams
2017-12-17 22:51   ` [PATCH v2 2/3] prune: fix pruning with multiple worktrees and split index Thomas Gummerer
2017-12-18 18:19     ` Brandon Williams
2018-01-03 22:18       ` Thomas Gummerer
2018-01-04 19:12         ` Junio C Hamano
2017-12-17 22:51   ` [PATCH v2 3/3] travis: run tests with GIT_TEST_SPLIT_INDEX Thomas Gummerer
2017-12-18 18:16     ` Lars Schneider
2018-01-04 20:13       ` Thomas Gummerer
2018-01-05 11:03         ` Lars Schneider
2018-01-07 20:02         ` Thomas Gummerer
2018-01-07 22:30   ` [PATCH v3 0/3] fixes for split index mode Thomas Gummerer
2018-01-07 22:30     ` [PATCH v3 1/3] read-cache: fix reading the shared index for other repos Thomas Gummerer
2018-01-08 10:41       ` Duy Nguyen
2018-01-08 22:41         ` Thomas Gummerer
2018-01-13 22:33           ` Thomas Gummerer
2018-01-08 23:38         ` Brandon Williams
2018-01-09  1:24           ` Duy Nguyen
2018-01-16 21:42       ` Brandon Williams
2018-01-17  0:16         ` Duy Nguyen
2018-01-17  0:32           ` Brandon Williams
2018-01-17 18:16           ` Jonathan Nieder
2018-01-18 10:19             ` Duy Nguyen
2018-01-19 21:57       ` Junio C Hamano
2018-01-20 11:58         ` Thomas Gummerer
2018-01-22  6:14           ` Junio C Hamano [this message]
2018-01-27 12:18             ` Thomas Gummerer
2018-02-07 22:41             ` Junio C Hamano
2018-01-07 22:30     ` [PATCH v3 2/3] split-index: don't write cache tree with null oid entries Thomas Gummerer
2018-01-07 22:30     ` [PATCH v3 3/3] travis: run tests with GIT_TEST_SPLIT_INDEX Thomas Gummerer
2018-01-13 22:37     ` [PATCH v3 4/3] read-cache: don't try to write index if we can't write shared index Thomas Gummerer
2018-01-14  9:36       ` Duy Nguyen
2018-01-14 10:18         ` [PATCH 1/3] read-cache.c: change type of "temp" in write_shared_index() Nguyễn Thái Ngọc Duy
2018-01-14 10:18           ` [PATCH 2/3] read-cache.c: move tempfile creation/cleanup out of write_shared_index Nguyễn Thái Ngọc Duy
2018-01-14 10:18           ` [PATCH 3/3] read-cache: don't write index twice if we can't write shared index Nguyễn Thái Ngọc Duy
2018-01-18 11:36             ` SZEDER Gábor
2018-01-18 12:47               ` Duy Nguyen
2018-01-18 13:29                 ` Jeff King
2018-01-18 13:36                   ` Duy Nguyen
2018-01-18 15:00                     ` Duy Nguyen
2018-01-18 21:37                       ` Jeff King
2018-01-18 22:32                         ` SZEDER Gábor
2018-01-19  0:30                           ` Duy Nguyen
2018-01-22 13:32                           ` [PATCH 0/5] Travis CI: don't run the test suite as root in the 32 bit Linux build SZEDER Gábor
2018-01-22 13:32                             ` [PATCH 1/5] travis-ci: use 'set -x' for the commands under 'su' " SZEDER Gábor
2018-01-22 13:32                             ` [PATCH 2/5] travis-ci: use 'set -e' in the 32 bit Linux build job SZEDER Gábor
2018-01-23 16:26                               ` Jeff King
2018-01-23 16:32                                 ` Jeff King
2018-01-24 12:12                                 ` SZEDER Gábor
2018-01-24 15:49                                   ` Jeff King
2018-01-22 13:32                             ` [PATCH 3/5] travis-ci: don't repeat the path of the cache directory SZEDER Gábor
2018-01-23 16:30                               ` Jeff King
2018-01-24 13:14                                 ` SZEDER Gábor
2018-01-22 13:32                             ` [PATCH 4/5] travis-ci: don't run the test suite as root in the 32 bit Linux build SZEDER Gábor
2018-01-23 16:43                               ` Jeff King
2018-01-24 13:45                                 ` SZEDER Gábor
2018-01-24 15:56                                   ` Jeff King
2018-01-24 18:01                                     ` Jeff King
2018-01-24 19:51                                       ` Jeff King
2018-01-22 13:32                             ` [PATCH 5/5] travis-ci: don't fail if user already exists on 32 bit Linux build job SZEDER Gábor
2018-01-23 16:46                               ` Jeff King
2018-01-24  0:32                                 ` Duy Nguyen
2018-01-24 19:39                                 ` SZEDER Gábor
2018-01-22 18:27                 ` [PATCH 3/3] read-cache: don't write index twice if we can't write shared index SZEDER Gábor
2018-01-22 19:46                   ` Eric Sunshine
2018-01-22 22:10                     ` SZEDER Gábor
2018-01-24  9:11                   ` Duy Nguyen
2018-01-26 22:44                   ` Lars Schneider
2018-01-14 14:29         ` [PATCH v3 4/3] read-cache: don't try to write index " Thomas Gummerer
2018-01-18 21:53     ` [PATCH v3 0/3] fixes for split index mode Thomas Gummerer
2018-01-19 18:34       ` Junio C Hamano
2018-01-19 21:11         ` Thomas Gummerer

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