From: Taylor Blau <me@ttaylorr.com>
To: git@vger.kernel.org
Cc: peff@peff.net
Subject: [PATCH 0/2] pack-write,repack: prevent opening packs too early
Date: Tue, 31 Aug 2021 22:05:46 -0400 [thread overview]
Message-ID: <cover.1630461918.git.me@ttaylorr.com> (raw)
This pair of patches fixes a race where the .idx is moved into place
before the .rev file, allowing the pack to be in a state where it
appears a .rev file wasn't generated.
This can cause Git to inadvertently take the slow "generate the
reverse index on-the-fly", which does not impact correctness, but is
unnecessarily slow when compared to reading the .rev file.
The race is fixed by moving the .idx into place only after all other
pack-related files have already been written. The first patch fixes
the direct `pack-objects` case, and the second patch fixes `repack`
(which also renames pack files around).
Thanks in advance for your review.
Taylor Blau (2):
pack-write.c: rename `.idx` file into place last
builtin/repack.c: move `.idx` files into place last
builtin/repack.c | 2 +-
pack-write.c | 12 ++++++------
2 files changed, 7 insertions(+), 7 deletions(-)
--
2.33.0.96.g73915697e6
next reply other threads:[~2021-09-01 2:05 UTC|newest]
Thread overview: 81+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-01 2:05 Taylor Blau [this message]
2021-09-01 2:06 ` [PATCH 1/2] pack-write.c: rename `.idx` file into place last Taylor Blau
2021-09-01 2:06 ` [PATCH 2/2] builtin/repack.c: move `.idx` files " Taylor Blau
2021-09-01 3:53 ` [PATCH 0/2] pack-write,repack: prevent opening packs too early Jeff King
2021-09-01 4:29 ` Taylor Blau
2021-09-01 4:59 ` Jeff King
2021-09-01 5:12 ` Taylor Blau
2021-09-01 6:08 ` Jeff King
2021-09-01 21:40 ` Taylor Blau
2021-09-07 16:07 ` Jeff King
2021-09-07 19:42 ` [PATCH 0/3] rename *.idx file into place last (also after *.bitmap) Ævar Arnfjörð Bjarmason
2021-09-07 19:42 ` [PATCH 1/3] pack-write: use more idiomatic strbuf usage for packname construction Ævar Arnfjörð Bjarmason
2021-09-07 22:21 ` Taylor Blau
2021-09-07 23:22 ` Ævar Arnfjörð Bjarmason
2021-09-07 19:42 ` [PATCH 2/3] pack-write: split up finish_tmp_packfile() function Ævar Arnfjörð Bjarmason
2021-09-07 22:28 ` Taylor Blau
2021-09-07 19:42 ` [PATCH 3/3] pack-write: rename *.idx file into place last (really!) Ævar Arnfjörð Bjarmason
2021-09-07 22:31 ` Taylor Blau
2021-09-07 22:36 ` [PATCH 0/3] rename *.idx file into place last (also after *.bitmap) Taylor Blau
2021-09-07 19:48 ` [PATCH 0/2] pack-write,repack: prevent opening packs too early Ævar Arnfjörð Bjarmason
2021-09-08 0:38 ` [PATCH v2 0/4] rename *.idx file into place last (also after *.bitmap) Ævar Arnfjörð Bjarmason
2021-09-08 0:38 ` [PATCH v2 1/4] pack.h: line-wrap the definition of finish_tmp_packfile() Ævar Arnfjörð Bjarmason
2021-09-08 0:38 ` [PATCH v2 2/4] pack-write: refactor renaming in finish_tmp_packfile() Ævar Arnfjörð Bjarmason
2021-09-08 4:22 ` Taylor Blau
2021-09-08 0:38 ` [PATCH v2 3/4] pack-write: split up finish_tmp_packfile() function Ævar Arnfjörð Bjarmason
2021-09-08 0:38 ` [PATCH v2 4/4] pack-write: rename *.idx file into place last (really!) Ævar Arnfjörð Bjarmason
2021-09-08 1:14 ` Ævar Arnfjörð Bjarmason
2021-09-08 9:18 ` Ævar Arnfjörð Bjarmason
2021-09-08 4:24 ` Taylor Blau
2021-09-08 22:17 ` [PATCH v2 0/3] prevent opening packs too early Taylor Blau
2021-09-08 22:17 ` [PATCH v2 1/3] pack-write.c: rename `.idx` files into place last Taylor Blau
2021-09-08 22:17 ` [PATCH v2 2/3] builtin/repack.c: move " Taylor Blau
2021-09-08 22:17 ` [PATCH v2 3/3] builtin/index-pack.c: " Taylor Blau
2021-09-08 23:52 ` [PATCH v2 0/3] prevent opening packs too early Ævar Arnfjörð Bjarmason
2021-09-09 0:50 ` Ævar Arnfjörð Bjarmason
2021-09-09 1:13 ` Taylor Blau
2021-09-09 1:33 ` Ævar Arnfjörð Bjarmason
2021-09-09 2:36 ` Ævar Arnfjörð Bjarmason
2021-09-09 2:49 ` Taylor Blau
2021-09-09 3:24 ` [PATCH 0/9] packfile: avoid .idx rename races Taylor Blau
2021-09-09 3:24 ` [PATCH 1/9] pack.h: line-wrap the definition of finish_tmp_packfile() Taylor Blau
2021-09-09 3:24 ` [PATCH 2/9] bulk-checkin.c: store checksum directly Taylor Blau
2021-09-09 7:38 ` Ævar Arnfjörð Bjarmason
2021-09-09 3:24 ` [PATCH 3/9] pack-write: refactor renaming in finish_tmp_packfile() Taylor Blau
2021-09-09 19:29 ` Junio C Hamano
2021-09-09 21:07 ` Taylor Blau
2021-09-09 23:30 ` Junio C Hamano
2021-09-09 23:31 ` Taylor Blau
2021-09-10 1:29 ` Junio C Hamano
2021-09-09 3:24 ` [PATCH 4/9] pack-write.c: rename `.idx` files after `*.rev` Taylor Blau
2021-09-09 7:46 ` Ævar Arnfjörð Bjarmason
2021-09-09 14:37 ` Taylor Blau
2021-09-09 19:32 ` Junio C Hamano
2021-09-09 3:25 ` [PATCH 5/9] builtin/repack.c: move `.idx` files into place last Taylor Blau
2021-09-09 19:38 ` Junio C Hamano
2021-09-09 21:08 ` Taylor Blau
2021-09-09 3:25 ` [PATCH 6/9] index-pack: refactor renaming in final() Taylor Blau
2021-09-09 19:45 ` Junio C Hamano
2021-09-09 21:11 ` Taylor Blau
2021-09-09 3:25 ` [PATCH 7/9] builtin/index-pack.c: move `.idx` files into place last Taylor Blau
2021-09-09 7:52 ` Ævar Arnfjörð Bjarmason
2021-09-09 19:45 ` Junio C Hamano
2021-09-09 3:25 ` [PATCH 8/9] pack-write: split up finish_tmp_packfile() function Taylor Blau
2021-09-09 3:25 ` [PATCH 9/9] pack-objects: rename .idx files into place after .bitmap files Taylor Blau
2021-09-09 7:54 ` Ævar Arnfjörð Bjarmason
2021-09-09 19:52 ` Junio C Hamano
2021-09-09 21:13 ` Taylor Blau
2021-09-09 8:06 ` [PATCH 0/9] packfile: avoid .idx rename races Ævar Arnfjörð Bjarmason
2021-09-09 14:40 ` Taylor Blau
2021-09-09 19:52 ` Junio C Hamano
2021-09-09 23:24 ` [PATCH v2 " Taylor Blau
2021-09-09 23:24 ` [PATCH v2 1/9] pack.h: line-wrap the definition of finish_tmp_packfile() Taylor Blau
2021-09-09 23:24 ` [PATCH v2 2/9] bulk-checkin.c: store checksum directly Taylor Blau
2021-09-09 23:24 ` [PATCH v2 3/9] pack-write: refactor renaming in finish_tmp_packfile() Taylor Blau
2021-09-09 23:24 ` [PATCH v2 4/9] pack-write.c: rename `.idx` files after `*.rev` Taylor Blau
2021-09-09 23:24 ` [PATCH v2 5/9] builtin/repack.c: move `.idx` files into place last Taylor Blau
2021-09-09 23:24 ` [PATCH v2 6/9] index-pack: refactor renaming in final() Taylor Blau
2021-09-09 23:24 ` [PATCH v2 7/9] builtin/index-pack.c: move `.idx` files into place last Taylor Blau
2021-09-09 23:24 ` [PATCH v2 8/9] pack-write: split up finish_tmp_packfile() function Taylor Blau
2021-09-09 23:25 ` [PATCH v2 9/9] pack-objects: rename .idx files into place after .bitmap files Taylor Blau
2021-09-10 1:35 ` [PATCH v2 0/9] packfile: avoid .idx rename races Junio C Hamano
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