From: Derrick Stolee <stolee@gmail.com>
To: Elijah Newren <newren@gmail.com>,
Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>
Cc: "Git Mailing List" <git@vger.kernel.org>,
"Junio C Hamano" <gitster@pobox.com>,
"Matheus Tavares Bernardino" <matheus.bernardino@usp.br>,
"Johannes Schindelin" <Johannes.Schindelin@gmx.de>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"René Scharfe" <l.s.r@web.de>,
"Derrick Stolee" <derrickstolee@github.com>,
"Derrick Stolee" <dstolee@microsoft.com>
Subject: Re: [PATCH v4 04/10] sparse-index: use WRITE_TREE_MISSING_OK
Date: Mon, 30 Aug 2021 09:19:15 -0400 [thread overview]
Message-ID: <2870fcb8-a356-c2c2-d084-b560326e1ad4@gmail.com> (raw)
In-Reply-To: <CABPp-BFcySug2kSvxT7YdJ1Oorza5AfxKPJgMBE2wN8qOw+=Eg@mail.gmail.com>
On 8/27/2021 5:33 PM, Elijah Newren wrote:
> On Tue, Aug 24, 2021 at 2:51 PM Derrick Stolee via GitGitGadget
> <gitgitgadget@gmail.com> wrote:
>>
>> From: Derrick Stolee <dstolee@microsoft.com>
>>
>> When updating the cache tree in convert_to_sparse(), the
>> WRITE_TREE_MISSING_OK flag indicates that trees might be computed that
>> do not already exist within the object database.
>
> Okay.
>
>> This happens in cases
>> such as 'git add' creating new trees that it wants to store in
>> anticipation of a following 'git commit'.
>
> This doesn't make any sense to me. Does 'git add' call
> convert_to_sparse()? I don't see why it would; wouldn't the calls to
> convert_to_sparse() come via sparse-checkout init/set commands? If
> I'm correct on that, and 'git add' wants to create new trees, then by
> the time convert_to_sparse() is called in some subsequent git
> operation, then convert_to_sparse would already have the trees it
> needs.
If someone adds a change outside the sparse-checkout cone, then the
index is expanded in-memory, then is converted to sparse when the
index is written again.
> I thought the reason you would need this is someone modified and
> staged a change to a file underneath a directory that will be
> sparsified away; at the time of convert_to_sparse(), a tree object may
> not have yet been written for the new tree with the newly modified
> file (because those tend to be written at commit time), but you'd need
> it at the time you sparsified.
Yes. I think we are trying to say the same thing.
Thanks,
-Stolee
next prev parent reply other threads:[~2021-08-30 13:19 UTC|newest]
Thread overview: 92+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-29 17:27 [PATCH 0/2] Sparse index: delete ignored files outside sparse cone Derrick Stolee via GitGitGadget
2021-07-29 17:27 ` [PATCH 1/2] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-07-29 17:27 ` [PATCH 2/2] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-07-30 13:52 ` Elijah Newren
2021-08-02 14:34 ` Derrick Stolee
2021-08-02 16:17 ` Elijah Newren
2021-08-05 1:55 ` Derrick Stolee
2021-08-05 3:54 ` Elijah Newren
2021-07-30 13:11 ` [PATCH 0/2] Sparse index: delete ignored files outside sparse cone Elijah Newren
2021-08-10 19:50 ` [PATCH v2 0/8] " Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 1/8] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 2/8] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 3/8] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-08-19 18:24 ` Elijah Newren
2021-08-20 15:04 ` Derrick Stolee
2021-08-10 19:50 ` [PATCH v2 4/8] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 5/8] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-08-12 17:29 ` Derrick Stolee
2021-08-10 19:50 ` [PATCH v2 6/8] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 7/8] sparse-index: add SPARSE_INDEX_IGNORE_CONFIG flag Derrick Stolee via GitGitGadget
2021-08-10 19:50 ` [PATCH v2 8/8] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 0/8] Sparse index: delete ignored files outside sparse cone Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 1/8] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-08-19 7:45 ` Johannes Schindelin
2021-08-20 15:09 ` Derrick Stolee
2021-08-20 16:40 ` Eric Sunshine
2021-08-17 13:23 ` [PATCH v3 2/8] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 3/8] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-08-17 13:23 ` [PATCH v3 4/8] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-08-19 8:01 ` Johannes Schindelin
2021-08-20 15:18 ` Derrick Stolee
2021-08-20 19:35 ` René Scharfe
2021-08-20 20:22 ` René Scharfe
2021-08-19 18:29 ` Elijah Newren
2021-08-17 13:23 ` [PATCH v3 5/8] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-08-19 8:07 ` Johannes Schindelin
2021-08-20 15:30 ` Derrick Stolee
2021-08-17 13:23 ` [PATCH v3 6/8] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-08-19 8:11 ` Johannes Schindelin
2021-08-20 15:36 ` Derrick Stolee
2021-08-19 20:53 ` Elijah Newren
2021-08-20 15:39 ` Derrick Stolee
2021-08-20 16:05 ` Elijah Newren
2021-08-17 13:23 ` [PATCH v3 7/8] sparse-index: add SPARSE_INDEX_IGNORE_CONFIG flag Derrick Stolee via GitGitGadget
2021-08-18 18:59 ` Derrick Stolee
2021-08-17 13:23 ` [PATCH v3 8/8] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-08-19 8:48 ` Johannes Schindelin
2021-08-20 15:49 ` Derrick Stolee
2021-08-20 16:15 ` Elijah Newren
2021-08-20 15:56 ` Elijah Newren
2021-08-23 20:00 ` Johannes Schindelin
2021-08-17 14:09 ` [PATCH v3 0/8] Sparse index: delete ignored files outside sparse cone Elijah Newren
2021-08-24 21:51 ` [PATCH v4 00/10] " Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 01/10] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 02/10] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 03/10] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 04/10] sparse-index: use WRITE_TREE_MISSING_OK Derrick Stolee via GitGitGadget
2021-08-27 21:33 ` Elijah Newren
2021-08-30 13:19 ` Derrick Stolee [this message]
2021-08-30 20:08 ` Elijah Newren
2021-08-24 21:51 ` [PATCH v4 05/10] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-08-24 22:21 ` René Scharfe
2021-08-25 1:09 ` Derrick Stolee
2021-08-24 21:51 ` [PATCH v4 06/10] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 07/10] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 08/10] sparse-index: add SPARSE_INDEX_MEMORY_ONLY flag Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 09/10] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-08-24 21:51 ` [PATCH v4 10/10] sparse-checkout: add config to disable deleting dirs Derrick Stolee via GitGitGadget
2021-08-27 20:58 ` Elijah Newren
2021-08-30 13:30 ` Derrick Stolee
2021-08-30 20:11 ` Elijah Newren
2021-08-27 21:56 ` [PATCH v4 00/10] Sparse index: delete ignored files outside sparse cone Elijah Newren
2021-08-27 22:01 ` Elijah Newren
2021-08-30 13:34 ` Derrick Stolee
2021-08-30 20:14 ` Elijah Newren
2021-08-30 13:54 ` Derrick Stolee
2021-08-30 20:23 ` Elijah Newren
2021-09-08 1:42 ` [PATCH v5 0/9] " Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 1/9] t7519: rewrite sparse index test Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 2/9] sparse-index: silently return when not using cone-mode patterns Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 3/9] unpack-trees: fix nested sparse-dir search Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 4/9] sparse-index: silently return when cache tree fails Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 5/9] sparse-index: use WRITE_TREE_MISSING_OK Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 6/9] sparse-checkout: create helper methods Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 7/9] attr: be careful about sparse directories Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 8/9] sparse-index: add SPARSE_INDEX_MEMORY_ONLY flag Derrick Stolee via GitGitGadget
2021-09-08 1:42 ` [PATCH v5 9/9] sparse-checkout: clear tracked sparse dirs Derrick Stolee via GitGitGadget
2021-09-08 5:21 ` [PATCH v5 0/9] Sparse index: delete ignored files outside sparse cone Junio C Hamano
2021-09-08 6:56 ` Junio C Hamano
2021-09-08 11:39 ` Derrick Stolee
2021-09-08 16:11 ` Junio C Hamano
2021-09-08 5:30 ` Elijah Newren
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