From: Junio C Hamano <gitster@pobox.com>
To: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Cc: git@vger.kernel.org, yuri.kanivetsky@gmail.com
Subject: Re: [PATCH v3 4/4] cache-tree: do not generate empty trees as a result of all i-t-a subentries
Date: Tue, 12 Jul 2016 13:49:18 -0700 [thread overview]
Message-ID: <xmqqtwfu37ld.fsf@gitster.mtv.corp.google.com> (raw)
In-Reply-To: <20160709052356.30570-5-pclouds@gmail.com> ("Nguyễn Thái Ngọc Duy"'s message of "Sat, 9 Jul 2016 07:23:56 +0200")
Nguyễn Thái Ngọc Duy <pclouds@gmail.com> writes:
> diff --git a/cache-tree.c b/cache-tree.c
> index c2676e8..2d50640 100644
> --- a/cache-tree.c
> +++ b/cache-tree.c
> @@ -380,6 +380,13 @@ static int update_one(struct cache_tree *it,
> continue;
> }
>
> + /*
> + * "sub" can be an empty tree if subentries are i-t-a.
> + */
> + if (sub && sub->cache_tree->entry_count < 0 &&
> + !hashcmp(sha1, EMPTY_TREE_SHA1_BIN))
> + continue;
> +
Looks sensible, except that it is unclear if it is correct to assume
that "subentries are ita" always equals to "entry_count < 0" here.
I _think_ it is OK, as the function itself does use the latter as
the sign that it hit to_invalidate=1 case when it returns.
Thanks.
> strbuf_grow(&buffer, entlen + 100);
> strbuf_addf(&buffer, "%o %.*s%c", mode, entlen, path + baselen, '\0');
> strbuf_add(&buffer, sha1, 20);
> diff --git a/t/t2203-add-intent.sh b/t/t2203-add-intent.sh
> index 24aed2e..f4b2fac 100755
> --- a/t/t2203-add-intent.sh
> +++ b/t/t2203-add-intent.sh
> @@ -99,5 +99,19 @@ test_expect_success 'cache-tree does not ignore dir that has i-t-a entries' '
> )
> '
>
> +test_expect_success 'cache-tree does skip dir that becomes empty' '
> + rm -fr ita-in-dir &&
> + git init ita-in-dir &&
> + (
> + cd ita-in-dir &&
> + mkdir -p 1/2/3 &&
> + echo 4 >1/2/3/4 &&
> + git add -N 1/2/3/4 &&
> + git write-tree >actual &&
> + echo $_EMPTY_TREE >expected &&
> + test_cmp expected actual
> + )
> +'
> +
> test_done
next prev parent reply other threads:[~2016-07-12 20:49 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-04 13:50 Git doesn't always add files to a commit (amend) Yuri Kanivetsky
2016-07-04 15:48 ` Duy Nguyen
2016-07-04 17:48 ` [PATCH] cache-tree.c: fix i-t-a check skipping directory updates sometimes Nguyễn Thái Ngọc Duy
2016-07-06 17:43 ` Junio C Hamano
2016-07-06 17:55 ` Junio C Hamano
2016-07-06 18:48 ` [PATCH v2 0/2] cache-tree building fix in the presence of ita entries Nguyễn Thái Ngọc Duy
2016-07-06 18:48 ` [PATCH v2 1/2] cache-tree.c: fix i-t-a entry skipping directory updates sometimes Nguyễn Thái Ngọc Duy
2016-07-06 18:48 ` [PATCH v2 2/2] cache-tree: do not generate empty trees as a result of all i-t-a subentries Nguyễn Thái Ngọc Duy
2016-07-06 19:26 ` Junio C Hamano
2016-07-07 17:12 ` Duy Nguyen
2016-07-07 18:52 ` Junio C Hamano
2016-07-08 15:39 ` Duy Nguyen
2016-07-08 15:53 ` Junio C Hamano
2016-07-08 16:36 ` Duy Nguyen
2016-07-08 17:23 ` Junio C Hamano
2016-07-09 5:23 ` [PATCH v3 0/4] cache-tree building fix in the presence of ita entries Nguyễn Thái Ngọc Duy
2016-07-09 5:23 ` [PATCH v3 1/4] test-lib.sh: introduce and use $_EMPTY_TREE Nguyễn Thái Ngọc Duy
2016-07-12 20:40 ` Junio C Hamano
2016-07-13 15:04 ` Duy Nguyen
2016-07-09 5:23 ` [PATCH v3 2/4] test-lib.sh: introduce and use $_EMPTY_BLOB Nguyễn Thái Ngọc Duy
2016-07-09 5:23 ` [PATCH v3 3/4] cache-tree.c: fix i-t-a entry skipping directory updates sometimes Nguyễn Thái Ngọc Duy
2016-07-09 5:23 ` [PATCH v3 4/4] cache-tree: do not generate empty trees as a result of all i-t-a subentries Nguyễn Thái Ngọc Duy
2016-07-12 20:49 ` Junio C Hamano [this message]
2016-07-13 14:59 ` Duy Nguyen
2016-07-16 5:06 ` [PATCH v4 0/4] cache-tree building fix in the presence of ita entries Nguyễn Thái Ngọc Duy
2016-07-16 5:06 ` [PATCH v4 1/4] test-lib.sh: introduce and use $EMPTY_TREE Nguyễn Thái Ngọc Duy
2016-07-16 5:06 ` [PATCH v4 2/4] test-lib.sh: introduce and use $EMPTY_BLOB Nguyễn Thái Ngọc Duy
2016-07-16 5:06 ` [PATCH v4 3/4] cache-tree.c: fix i-t-a entry skipping directory updates sometimes Nguyễn Thái Ngọc Duy
2016-07-16 5:06 ` [PATCH v4 4/4] cache-tree: do not generate empty trees as a result of all i-t-a subentries Nguyễn Thái Ngọc Duy
2016-07-18 20:48 ` [PATCH v4 0/4] cache-tree building fix in the presence of ita entries Junio C Hamano
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