From: Elijah Newren <newren@gmail.com>
To: Derrick Stolee via GitGitGadget <gitgitgadget@gmail.com>
Cc: "Git Mailing List" <git@vger.kernel.org>,
"Junio C Hamano" <gitster@pobox.com>, "Jeff King" <peff@peff.net>,
"Jonathan Nieder" <jrnieder@gmail.com>,
"Eric Sunshine" <sunshine@sunshineco.com>,
"Nguyễn Thái Ngọc" <pclouds@gmail.com>,
"Derrick Stolee" <derrickstolee@github.com>,
"Derrick Stolee" <dstolee@microsoft.com>
Subject: Re: [PATCH 11/27] unpack-trees: allow sparse directories
Date: Wed, 27 Jan 2021 09:36:43 -0800 [thread overview]
Message-ID: <CABPp-BGPJgA4guWHVm3AVS=hM0fTixUpRvJe5i9NnHT-3QJMfw@mail.gmail.com> (raw)
In-Reply-To: <09893b4a6bbe13e61395411bdae57ce041829042.1611596534.git.gitgitgadget@gmail.com>
On Mon, Jan 25, 2021 at 9:42 AM Derrick Stolee via GitGitGadget
<gitgitgadget@gmail.com> wrote:
>
> From: Derrick Stolee <dstolee@microsoft.com>
>
> The index_pos_by_traverse_info() currently throws a BUG() when a
> directory entry exists exactly in the index. We need to consider that it
> is possible to have a directory in a sparse index as long as that entry
> is itself marked with the skip-worktree bit.
>
> The negation of the 'pos' variable must be conditioned to only when it
> starts as negative. This is identical behavior as before when the index
> is full.
The first sentence of this paragraph was really hard for me to parse.
Reading the code and then reading the sentence I could make sense of
it, but I struggled to do so the other way around. Is there some way
to reword this? Or is this just a reading comprehension issue on my
part? (It might be...)
> The starts_with() condition matches because our name.buf terminates with
> a directory separator, just like our sparse directory entries.
>
> Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
> ---
> unpack-trees.c | 9 ++++++---
> 1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/unpack-trees.c b/unpack-trees.c
> index 4dd99219073..b324eec2a5d 100644
> --- a/unpack-trees.c
> +++ b/unpack-trees.c
> @@ -746,9 +746,12 @@ static int index_pos_by_traverse_info(struct name_entry *names,
> strbuf_make_traverse_path(&name, info, names->path, names->pathlen);
> strbuf_addch(&name, '/');
> pos = index_name_pos(o->src_index, name.buf, name.len);
> - if (pos >= 0)
> - BUG("This is a directory and should not exist in index");
> - pos = -pos - 1;
> + if (pos >= 0) {
> + if (!o->src_index->sparse_index ||
> + !(o->src_index->cache[pos]->ce_flags & CE_SKIP_WORKTREE))
> + BUG("This is a directory and should not exist in index");
> + } else
> + pos = -pos - 1;
> if (pos >= o->src_index->cache_nr ||
> !starts_with(o->src_index->cache[pos]->name, name.buf) ||
> (pos > 0 && starts_with(o->src_index->cache[pos-1]->name, name.buf)))
> --
> gitgitgadget
The patch looks pretty straightforward to me.
next prev parent reply other threads:[~2021-01-27 17:40 UTC|newest]
Thread overview: 61+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-25 17:41 [PATCH 00/27] [RFC] Sparse Index Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 01/27] sparse-index: add guard to ensure full index Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 02/27] sparse-index: implement ensure_full_index() Derrick Stolee via GitGitGadget
2021-01-27 3:05 ` Elijah Newren
2021-01-27 13:43 ` Derrick Stolee
2021-01-27 16:38 ` Elijah Newren
2021-01-28 5:25 ` Junio C Hamano
2021-01-25 17:41 ` [PATCH 03/27] t1092: compare sparse-checkout to sparse-index Derrick Stolee via GitGitGadget
2021-01-27 3:08 ` Elijah Newren
2021-01-27 13:30 ` Derrick Stolee
2021-01-27 16:54 ` Elijah Newren
2021-01-25 17:41 ` [PATCH 04/27] test-read-cache: print cache entries with --table Derrick Stolee via GitGitGadget
2021-01-27 3:25 ` Elijah Newren
2021-01-25 17:41 ` [PATCH 05/27] test-tool: read-cache --table --no-stat Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 06/27] test-tool: don't force full index Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 07/27] unpack-trees: ensure " Derrick Stolee via GitGitGadget
2021-01-27 4:43 ` Elijah Newren
2021-01-25 17:41 ` [PATCH 08/27] sparse-checkout: hold pattern list in index Derrick Stolee via GitGitGadget
2021-01-27 17:00 ` Elijah Newren
2021-01-28 13:12 ` Derrick Stolee
2021-01-25 17:41 ` [PATCH 09/27] sparse-index: convert from full to sparse Derrick Stolee via GitGitGadget
2021-01-27 17:30 ` Elijah Newren
2021-01-25 17:41 ` [PATCH 10/27] submodule: sparse-index should not collapse links Derrick Stolee via GitGitGadget
2021-01-25 17:41 ` [PATCH 11/27] unpack-trees: allow sparse directories Derrick Stolee via GitGitGadget
2021-01-27 17:36 ` Elijah Newren [this message]
2021-01-25 17:41 ` [PATCH 12/27] sparse-index: check index conversion happens Derrick Stolee via GitGitGadget
2021-01-27 17:46 ` Elijah Newren
2021-01-25 17:41 ` [PATCH 13/27] sparse-index: create extension for compatibility Derrick Stolee via GitGitGadget
2021-01-27 18:03 ` Elijah Newren
2021-01-25 17:42 ` [PATCH 14/27] sparse-checkout: toggle sparse index from builtin Derrick Stolee via GitGitGadget
2021-01-27 18:18 ` Elijah Newren
2021-01-28 15:26 ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 15/27] [RFC-VERSION] *: ensure full index Derrick Stolee via GitGitGadget
2021-02-01 20:22 ` Elijah Newren
2021-02-01 21:10 ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 16/27] unpack-trees: make sparse aware Derrick Stolee via GitGitGadget
2021-02-01 20:50 ` Elijah Newren
2021-02-09 17:23 ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 17/27] dir.c: accept a directory as part of cone-mode patterns Derrick Stolee via GitGitGadget
2021-02-01 22:12 ` Elijah Newren
2021-01-25 17:42 ` [PATCH 18/27] status: use sparse-index throughout Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 19/27] status: skip sparse-checkout percentage with sparse-index Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 20/27] sparse-index: expand_to_path() trivial implementation Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 21/27] sparse-index: expand_to_path no-op if path exists Derrick Stolee via GitGitGadget
2021-02-01 22:34 ` Elijah Newren
2021-01-25 17:42 ` [PATCH 22/27] add: allow operating on a sparse-only index Derrick Stolee via GitGitGadget
2021-02-01 23:08 ` Elijah Newren
2021-01-25 17:42 ` [PATCH 23/27] submodule: die_path_inside_submodule is sparse aware Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 24/27] dir: use expand_to_path in add_patterns() Derrick Stolee via GitGitGadget
2021-02-01 23:21 ` Elijah Newren
2021-01-25 17:42 ` [PATCH 25/27] fsmonitor: disable if index is sparse Derrick Stolee via GitGitGadget
2021-01-25 17:42 ` [PATCH 26/27] pathspec: stop calling ensure_full_index Derrick Stolee via GitGitGadget
2021-02-01 23:24 ` Elijah Newren
2021-02-02 2:39 ` Derrick Stolee
2021-01-25 17:42 ` [PATCH 27/27] cache-tree: integrate with sparse directory entries Derrick Stolee via GitGitGadget
2021-02-01 23:54 ` Elijah Newren
2021-02-02 2:41 ` Derrick Stolee
2021-02-02 3:05 ` Elijah Newren
2021-01-25 20:10 ` [PATCH 00/27] [RFC] Sparse Index Junio C Hamano
2021-01-25 21:18 ` Derrick Stolee
2021-02-02 3:11 ` Elijah Newren
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CABPp-BGPJgA4guWHVm3AVS=hM0fTixUpRvJe5i9NnHT-3QJMfw@mail.gmail.com' \
--to=newren@gmail.com \
--cc=derrickstolee@github.com \
--cc=dstolee@microsoft.com \
--cc=git@vger.kernel.org \
--cc=gitgitgadget@gmail.com \
--cc=gitster@pobox.com \
--cc=jrnieder@gmail.com \
--cc=pclouds@gmail.com \
--cc=peff@peff.net \
--cc=sunshine@sunshineco.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).