git@vger.kernel.org list mirror (unofficial, one of many)
 help / color / mirror / code / Atom feed
From: Taylor Blau <me@ttaylorr.com>
To: git@vger.kernel.org
Cc: dstolee@microsoft.com, gitster@pobox.com, peff@peff.net,
	martin.agren@gmail.com, szeder.dev@gmail.com
Subject: [PATCH v2 00/24] pack-bitmap: bitmap generation improvements
Date: Tue, 17 Nov 2020 16:46:16 -0500	[thread overview]
Message-ID: <cover.1605649533.git.me@ttaylorr.com> (raw)
In-Reply-To: <cover.1605123652.git.me@ttaylorr.com>

Here is an updated version of this series, which improves the
performance of generating reachability bitmaps in large repositories.

Not very much has changed since last time, but a range-diff is below
nonetheless. The major changes are:

  - Avoid an overflow when bounds checking in the second and third
    patches (thanks, Martin, for noticing).
  - Incorporate a fix to avoid reading beyond an EWAH bitmap by double
    checking our read before actually doing it (thanks, Peff).
  - Harden the tests so that they pass under sha256-mode (thanks SZEDER,
    and Peff).

Derrick Stolee (9):
  pack-bitmap-write: fill bitmap with commit history
  bitmap: add bitmap_diff_nonzero()
  commit: implement commit_list_contains()
  t5310: add branch-based checks
  pack-bitmap-write: rename children to reverse_edges
  pack-bitmap-write: build fewer intermediate bitmaps
  pack-bitmap-write: use existing bitmaps
  pack-bitmap-write: relax unique rewalk condition
  pack-bitmap-write: better reuse bitmaps

Jeff King (11):
  pack-bitmap: fix header size check
  pack-bitmap: bounds-check size of cache extension
  t5310: drop size of truncated ewah bitmap
  rev-list: die when --test-bitmap detects a mismatch
  ewah: factor out bitmap growth
  ewah: make bitmap growth less aggressive
  ewah: implement bitmap_or()
  ewah: add bitmap_dup() function
  pack-bitmap-write: reimplement bitmap writing
  pack-bitmap-write: pass ownership of intermediate bitmaps
  pack-bitmap-write: ignore BITMAP_FLAG_REUSE

Taylor Blau (4):
  ewah/ewah_bitmap.c: grow buffer past 1
  pack-bitmap.c: check reads more aggressively when loading
  pack-bitmap: factor out 'bitmap_for_commit()'
  pack-bitmap: factor out 'add_commit_to_bitmap()'

 builtin/pack-objects.c  |   1 -
 commit.c                |  11 +
 commit.h                |   2 +
 ewah/bitmap.c           |  54 ++++-
 ewah/ewah_bitmap.c      |   2 +-
 ewah/ewok.h             |   3 +-
 pack-bitmap-write.c     | 452 +++++++++++++++++++++++++---------------
 pack-bitmap.c           | 139 ++++++------
 pack-bitmap.h           |   8 +-
 t/t5310-pack-bitmaps.sh | 164 ++++++++++++---
 10 files changed, 555 insertions(+), 281 deletions(-)

Range-diff against v1:
 -:  ---------- >  1:  07054ff8ee ewah/ewah_bitmap.c: grow buffer past 1
 1:  1970a70207 !  2:  74a13b4a6e pack-bitmap: fix header size check
    @@ pack-bitmap.c: static struct ewah_bitmap *read_bitmap_1(struct bitmap_index *ind
     +	size_t header_size = sizeof(*header) - GIT_MAX_RAWSZ + the_hash_algo->rawsz;

     -	if (index->map_size < sizeof(*header) + the_hash_algo->rawsz)
    -+	if (index->map_size < header_size)
    - 		return error("Corrupted bitmap index (missing header data)");
    +-		return error("Corrupted bitmap index (missing header data)");
    ++	if (index->map_size < header_size + the_hash_algo->rawsz)
    ++		return error("Corrupted bitmap index (too small)");

      	if (memcmp(header->magic, BITMAP_IDX_SIGNATURE, sizeof(BITMAP_IDX_SIGNATURE)) != 0)
    + 		return error("Corrupted bitmap index file (wrong header)");
     @@ pack-bitmap.c: static int load_bitmap_header(struct bitmap_index *index)
      	}

 2:  36b1815d03 !  3:  db11116dac pack-bitmap: bounds-check size of cache extension
    @@ Commit message
         pack-bitmap: bounds-check size of cache extension

         A .bitmap file may have a "name hash cache" extension, which puts a
    -    sequence of uint32_t bytes (one per object) at the end of the file. When
    -    we see a flag indicating this extension, we blindly subtract the
    +    sequence of uint32_t values (one per object) at the end of the file.
    +    When we see a flag indicating this extension, we blindly subtract the
         appropriate number of bytes from our available length. However, if the
         .bitmap file is too short, we'll underflow our length variable and wrap
         around, thinking we have a very large length. This can lead to reading
    @@ pack-bitmap.c: static int load_bitmap_header(struct bitmap_index *index)
      	/* Parse known bitmap format options */
      	{
      		uint32_t flags = ntohs(header->options);
    -+		uint32_t cache_size = st_mult(index->pack->num_objects, sizeof(uint32_t));
    ++		size_t cache_size = st_mult(index->pack->num_objects, sizeof(uint32_t));
     +		unsigned char *index_end = index->map + index->map_size - the_hash_algo->rawsz;

      		if ((flags & BITMAP_OPT_FULL_DAG) == 0)
    @@ pack-bitmap.c: static int load_bitmap_header(struct bitmap_index *index)
      		if (flags & BITMAP_OPT_HASH_CACHE) {
     -			unsigned char *end = index->map + index->map_size - the_hash_algo->rawsz;
     -			index->hashes = ((uint32_t *)end) - index->pack->num_objects;
    -+			if (index->map + header_size + cache_size > index_end)
    ++			if (cache_size > index_end - index->map - header_size)
     +				return error("corrupted bitmap index file (too short to fit hash cache)");
     +			index->hashes = (void *)(index_end - cache_size);
     +			index_end -= cache_size;
 3:  edfec2ea62 =  4:  f779e76f82 t5310: drop size of truncated ewah bitmap
 4:  f3fec466f7 =  5:  1a9ac1c4ae rev-list: die when --test-bitmap detects a mismatch
 5:  b35012f44d =  6:  9bb1ea3b19 ewah: factor out bitmap growth
 6:  53b8bea98c =  7:  f8426c7e8b ewah: make bitmap growth less aggressive
 7:  98e3bfc1b2 =  8:  674e31f98e ewah: implement bitmap_or()
 8:  1bd115fc51 =  9:  a903c949d8 ewah: add bitmap_dup() function
 9:  adf16557c2 = 10:  c951206729 pack-bitmap-write: reimplement bitmap writing
10:  27992687c9 = 11:  466dd3036a pack-bitmap-write: pass ownership of intermediate bitmaps
11:  d92fb0e1e1 = 12:  8e5607929d pack-bitmap-write: fill bitmap with commit history
12:  bf86cb6196 = 13:  4840c64c51 bitmap: add bitmap_diff_nonzero()
13:  78cdf847aa = 14:  63e846f4e8 commit: implement commit_list_contains()
14:  778e9e9c44 = 15:  8b5d239333 t5310: add branch-based checks
15:  526d3509ef = 16:  60a46091bb pack-bitmap-write: rename children to reverse_edges
 -:  ---------- > 17:  8f7bb2dd2e pack-bitmap.c: check reads more aggressively when loading
16:  86d77fd085 ! 18:  5262daa330 pack-bitmap-write: build fewer intermediate bitmaps
    @@ t/t5310-pack-bitmaps.sh: test_expect_success 'setup repo with moderate-sized his
      '

      test_expect_success 'rev-list --test-bitmap verifies bitmaps' '
    +@@ t/t5310-pack-bitmaps.sh: test_expect_success 'truncated bitmap fails gracefully (ewah)' '
    + 	git rev-list --use-bitmap-index --count --all >expect &&
    + 	bitmap=$(ls .git/objects/pack/*.bitmap) &&
    + 	test_when_finished "rm -f $bitmap" &&
    +-	test_copy_bytes 256 <$bitmap >$bitmap.tmp &&
    ++	test_copy_bytes 270 <$bitmap >$bitmap.tmp &&
    + 	mv -f $bitmap.tmp $bitmap &&
    + 	git rev-list --use-bitmap-index --count --all >actual 2>stderr &&
    + 	test_cmp expect actual &&
17:  e4f296100c = 19:  a206f48614 pack-bitmap-write: ignore BITMAP_FLAG_REUSE
18:  6e856bcf75 = 20:  9928b3c7da pack-bitmap: factor out 'bitmap_for_commit()'
19:  9b5f595f50 = 21:  f40a39a48a pack-bitmap: factor out 'add_commit_to_bitmap()'
20:  c458f98e11 = 22:  4bf5e78a54 pack-bitmap-write: use existing bitmaps
21:  3026876e7a = 23:  1da4fa0fb8 pack-bitmap-write: relax unique rewalk condition
22:  ce2716e291 = 24:  42399a1c2e pack-bitmap-write: better reuse bitmaps
--
2.29.2.312.gabc4d358d8

  parent reply	other threads:[~2020-11-17 21:48 UTC|newest]

Thread overview: 173+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-11 19:41 [PATCH 00/23] " Taylor Blau
2020-11-11 19:41 ` [PATCH 01/23] ewah/ewah_bitmap.c: grow buffer past 1 Taylor Blau
2020-11-22 19:36   ` Junio C Hamano
2020-11-23 16:22     ` Taylor Blau
2020-11-24  2:48       ` Jeff King
2020-11-24  2:51         ` Jeff King
2020-12-01 22:56           ` Taylor Blau
2020-11-11 19:41 ` [PATCH 02/23] pack-bitmap: fix header size check Taylor Blau
2020-11-12 17:39   ` Martin Ågren
2020-11-11 19:42 ` [PATCH 03/23] pack-bitmap: bounds-check size of cache extension Taylor Blau
2020-11-12 17:47   ` Martin Ågren
2020-11-13  4:57     ` Jeff King
2020-11-13  5:26       ` Martin Ågren
2020-11-13 21:29       ` Taylor Blau
2020-11-13 21:39         ` Jeff King
2020-11-13 21:49           ` Taylor Blau
2020-11-13 22:11             ` Jeff King
2020-11-11 19:42 ` [PATCH 04/23] t5310: drop size of truncated ewah bitmap Taylor Blau
2020-11-11 19:42 ` [PATCH 05/23] rev-list: die when --test-bitmap detects a mismatch Taylor Blau
2020-11-11 19:42 ` [PATCH 06/23] ewah: factor out bitmap growth Taylor Blau
2020-11-11 19:42 ` [PATCH 07/23] ewah: make bitmap growth less aggressive Taylor Blau
2020-11-22 20:32   ` Junio C Hamano
2020-11-23 16:49     ` Taylor Blau
2020-11-24  3:00       ` Jeff King
2020-11-24 20:11         ` Junio C Hamano
2020-11-11 19:43 ` [PATCH 08/23] ewah: implement bitmap_or() Taylor Blau
2020-11-22 20:34   ` Junio C Hamano
2020-11-23 16:52     ` Taylor Blau
2020-11-11 19:43 ` [PATCH 09/23] ewah: add bitmap_dup() function Taylor Blau
2020-11-11 19:43 ` [PATCH 10/23] pack-bitmap-write: reimplement bitmap writing Taylor Blau
2020-11-11 19:43 ` [PATCH 11/23] pack-bitmap-write: pass ownership of intermediate bitmaps Taylor Blau
2020-11-11 19:43 ` [PATCH 12/23] pack-bitmap-write: fill bitmap with commit history Taylor Blau
2020-11-11 19:43 ` [PATCH 13/23] bitmap: add bitmap_diff_nonzero() Taylor Blau
2020-11-11 19:43 ` [PATCH 14/23] commit: implement commit_list_contains() Taylor Blau
2020-11-11 19:43 ` [PATCH 15/23] t5310: add branch-based checks Taylor Blau
2020-11-11 20:58   ` Derrick Stolee
2020-11-11 21:04     ` Junio C Hamano
2020-11-15 23:26       ` Johannes Schindelin
2020-11-11 19:43 ` [PATCH 16/23] pack-bitmap-write: rename children to reverse_edges Taylor Blau
2020-11-11 19:43 ` [PATCH 17/23] pack-bitmap-write: build fewer intermediate bitmaps Taylor Blau
2020-11-13 22:23   ` SZEDER Gábor
2020-11-13 23:03     ` Jeff King
2020-11-14  6:23       ` Jeff King
2020-11-11 19:43 ` [PATCH 18/23] pack-bitmap-write: ignore BITMAP_FLAG_REUSE Taylor Blau
2020-11-11 19:44 ` [PATCH 19/23] pack-bitmap: factor out 'bitmap_for_commit()' Taylor Blau
2020-11-11 19:44 ` [PATCH 20/23] pack-bitmap: factor out 'add_commit_to_bitmap()' Taylor Blau
2020-11-11 19:44 ` [PATCH 21/23] pack-bitmap-write: use existing bitmaps Taylor Blau
2020-11-11 19:44 ` [PATCH 22/23] pack-bitmap-write: relax unique rewalk condition Taylor Blau
2020-11-11 19:44 ` [PATCH 23/23] pack-bitmap-write: better reuse bitmaps Taylor Blau
2020-11-17 21:46 ` Taylor Blau [this message]
2020-11-17 21:46   ` [PATCH v2 01/24] ewah/ewah_bitmap.c: grow buffer past 1 Taylor Blau
2020-11-17 21:46   ` [PATCH v2 02/24] pack-bitmap: fix header size check Taylor Blau
2020-11-17 21:46   ` [PATCH v2 03/24] pack-bitmap: bounds-check size of cache extension Taylor Blau
2020-11-17 21:46   ` [PATCH v2 04/24] t5310: drop size of truncated ewah bitmap Taylor Blau
2020-11-17 21:46   ` [PATCH v2 05/24] rev-list: die when --test-bitmap detects a mismatch Taylor Blau
2020-11-17 21:46   ` [PATCH v2 06/24] ewah: factor out bitmap growth Taylor Blau
2020-11-17 21:47   ` [PATCH v2 07/24] ewah: make bitmap growth less aggressive Taylor Blau
2020-11-17 21:47   ` [PATCH v2 08/24] ewah: implement bitmap_or() Taylor Blau
2020-11-17 21:47   ` [PATCH v2 09/24] ewah: add bitmap_dup() function Taylor Blau
2020-11-17 21:47   ` [PATCH v2 10/24] pack-bitmap-write: reimplement bitmap writing Taylor Blau
2020-11-25  0:53     ` Jonathan Tan
2020-11-28 17:27       ` Taylor Blau
2020-11-17 21:47   ` [PATCH v2 11/24] pack-bitmap-write: pass ownership of intermediate bitmaps Taylor Blau
2020-11-25  1:00     ` Jonathan Tan
2020-11-17 21:47   ` [PATCH v2 12/24] pack-bitmap-write: fill bitmap with commit history Taylor Blau
2020-11-22 21:50     ` Junio C Hamano
2020-11-23 14:54       ` Derrick Stolee
2020-11-25  1:14     ` Jonathan Tan
2020-11-28 17:21       ` Taylor Blau
2020-11-30 18:33         ` Jonathan Tan
2020-11-17 21:47   ` [PATCH v2 13/24] bitmap: add bitmap_diff_nonzero() Taylor Blau
2020-11-22 22:01     ` Junio C Hamano
2020-11-23 20:19       ` Taylor Blau
2020-11-17 21:47   ` [PATCH v2 14/24] commit: implement commit_list_contains() Taylor Blau
2020-11-17 21:47   ` [PATCH v2 15/24] t5310: add branch-based checks Taylor Blau
2020-11-25  1:17     ` Jonathan Tan
2020-11-28 17:30       ` Taylor Blau
2020-11-17 21:47   ` [PATCH v2 16/24] pack-bitmap-write: rename children to reverse_edges Taylor Blau
2020-11-17 21:47   ` [PATCH v2 17/24] pack-bitmap.c: check reads more aggressively when loading Taylor Blau
2020-11-17 21:48   ` [PATCH v2 18/24] pack-bitmap-write: build fewer intermediate bitmaps Taylor Blau
2020-11-24  6:07     ` Jonathan Tan
2020-11-25  1:46     ` Jonathan Tan
2020-11-30 18:41       ` Derrick Stolee
2020-11-17 21:48   ` [PATCH v2 19/24] pack-bitmap-write: ignore BITMAP_FLAG_REUSE Taylor Blau
2020-12-02  7:13     ` Jonathan Tan
2020-11-17 21:48   ` [PATCH v2 20/24] pack-bitmap: factor out 'bitmap_for_commit()' Taylor Blau
2020-12-02  7:17     ` Jonathan Tan
2020-11-17 21:48   ` [PATCH v2 21/24] pack-bitmap: factor out 'add_commit_to_bitmap()' Taylor Blau
2020-12-02  7:20     ` Jonathan Tan
2020-11-17 21:48   ` [PATCH v2 22/24] pack-bitmap-write: use existing bitmaps Taylor Blau
2020-12-02  7:28     ` Jonathan Tan
2020-12-02 16:21       ` Taylor Blau
2020-11-17 21:48   ` [PATCH v2 23/24] pack-bitmap-write: relax unique rewalk condition Taylor Blau
2020-12-02  7:44     ` Jonathan Tan
2020-12-02 16:30       ` Taylor Blau
2020-12-07 18:19         ` Jonathan Tan
2020-12-07 18:43           ` Derrick Stolee
2020-12-07 18:45             ` Derrick Stolee
2020-12-07 18:48           ` Jeff King
2020-11-17 21:48   ` [PATCH v2 24/24] pack-bitmap-write: better reuse bitmaps Taylor Blau
2020-12-02  8:08     ` Jonathan Tan
2020-12-02 16:35       ` Taylor Blau
2020-12-02 18:22         ` Derrick Stolee
2020-12-02 18:25           ` Taylor Blau
2020-12-07 18:26             ` Jonathan Tan
2020-12-07 18:24           ` Jonathan Tan
2020-12-07 19:20             ` Derrick Stolee
2020-11-18 18:32   ` [PATCH v2 00/24] pack-bitmap: bitmap generation improvements SZEDER Gábor
2020-11-18 19:51     ` Taylor Blau
2020-11-22  2:17       ` Taylor Blau
2020-11-22  2:28         ` Taylor Blau
2020-11-20  6:34   ` Martin Ågren
2020-11-21 19:37     ` Junio C Hamano
2020-11-21 20:11       ` Martin Ågren
2020-11-22  2:31         ` Taylor Blau
2020-11-24  2:43           ` Jeff King
2020-12-01 23:04             ` Taylor Blau
2020-12-01 23:37               ` Jonathan Tan
2020-12-01 23:43                 ` Taylor Blau
2020-12-02  8:11                   ` Jonathan Tan
2020-12-08  0:04 ` [PATCH v3 " Taylor Blau
2020-12-08  0:04   ` [PATCH v3 01/24] ewah/ewah_bitmap.c: avoid open-coding ALLOC_GROW() Taylor Blau
2020-12-08  0:04   ` [PATCH v3 02/24] pack-bitmap: fix header size check Taylor Blau
2020-12-08  0:04   ` [PATCH v3 03/24] pack-bitmap: bounds-check size of cache extension Taylor Blau
2020-12-08  0:04   ` [PATCH v3 04/24] t5310: drop size of truncated ewah bitmap Taylor Blau
2020-12-08  0:04   ` [PATCH v3 05/24] rev-list: die when --test-bitmap detects a mismatch Taylor Blau
2020-12-08  0:04   ` [PATCH v3 06/24] ewah: factor out bitmap growth Taylor Blau
2020-12-08  0:04   ` [PATCH v3 07/24] ewah: make bitmap growth less aggressive Taylor Blau
2020-12-08  0:04   ` [PATCH v3 08/24] ewah: implement bitmap_or() Taylor Blau
2020-12-08  0:04   ` [PATCH v3 09/24] ewah: add bitmap_dup() function Taylor Blau
2020-12-08  0:04   ` [PATCH v3 10/24] pack-bitmap-write: reimplement bitmap writing Taylor Blau
2020-12-08  0:05   ` [PATCH v3 11/24] pack-bitmap-write: pass ownership of intermediate bitmaps Taylor Blau
2020-12-08  0:05   ` [PATCH v3 12/24] pack-bitmap-write: fill bitmap with commit history Taylor Blau
2020-12-08  0:05   ` [PATCH v3 13/24] bitmap: implement bitmap_is_subset() Taylor Blau
2020-12-08  0:05   ` [PATCH v3 14/24] commit: implement commit_list_contains() Taylor Blau
2020-12-08  0:05   ` [PATCH v3 15/24] t5310: add branch-based checks Taylor Blau
2020-12-08  0:05   ` [PATCH v3 16/24] pack-bitmap-write: rename children to reverse_edges Taylor Blau
2020-12-08  0:05   ` [PATCH v3 17/24] pack-bitmap.c: check reads more aggressively when loading Taylor Blau
2020-12-08  0:05   ` [PATCH v3 18/24] pack-bitmap-write: build fewer intermediate bitmaps Taylor Blau
2020-12-08  0:05   ` [PATCH v3 19/24] pack-bitmap-write: ignore BITMAP_FLAG_REUSE Taylor Blau
2020-12-08  0:05   ` [PATCH v3 20/24] pack-bitmap: factor out 'bitmap_for_commit()' Taylor Blau
2020-12-08  0:05   ` [PATCH v3 21/24] pack-bitmap: factor out 'add_commit_to_bitmap()' Taylor Blau
2020-12-08  0:05   ` [PATCH v3 22/24] pack-bitmap-write: use existing bitmaps Taylor Blau
2020-12-08  0:05   ` [PATCH v3 23/24] pack-bitmap-write: relax unique rewalk condition Taylor Blau
2020-12-08  0:05   ` [PATCH v3 24/24] pack-bitmap-write: better reuse bitmaps Taylor Blau
2020-12-08 20:56   ` [PATCH v3 00/24] pack-bitmap: bitmap generation improvements Junio C Hamano
2020-12-08 21:03     ` Taylor Blau
2020-12-08 22:03       ` Junio C Hamano
2020-12-08 22:03 ` [PATCH v4 " Taylor Blau
2020-12-08 22:03   ` [PATCH v4 01/24] ewah/ewah_bitmap.c: avoid open-coding ALLOC_GROW() Taylor Blau
2020-12-08 22:03   ` [PATCH v4 02/24] pack-bitmap: fix header size check Taylor Blau
2020-12-08 22:03   ` [PATCH v4 03/24] pack-bitmap: bounds-check size of cache extension Taylor Blau
2020-12-08 22:03   ` [PATCH v4 04/24] t5310: drop size of truncated ewah bitmap Taylor Blau
2020-12-08 22:03   ` [PATCH v4 05/24] rev-list: die when --test-bitmap detects a mismatch Taylor Blau
2020-12-08 22:03   ` [PATCH v4 06/24] ewah: factor out bitmap growth Taylor Blau
2020-12-08 22:03   ` [PATCH v4 07/24] ewah: make bitmap growth less aggressive Taylor Blau
2020-12-08 22:03   ` [PATCH v4 08/24] ewah: implement bitmap_or() Taylor Blau
2020-12-08 22:03   ` [PATCH v4 09/24] ewah: add bitmap_dup() function Taylor Blau
2020-12-08 22:03   ` [PATCH v4 10/24] pack-bitmap-write: reimplement bitmap writing Taylor Blau
2020-12-08 22:03   ` [PATCH v4 11/24] pack-bitmap-write: pass ownership of intermediate bitmaps Taylor Blau
2020-12-08 22:04   ` [PATCH v4 12/24] pack-bitmap-write: fill bitmap with commit history Taylor Blau
2020-12-08 22:04   ` [PATCH v4 13/24] bitmap: implement bitmap_is_subset() Taylor Blau
2020-12-08 22:04   ` [PATCH v4 14/24] commit: implement commit_list_contains() Taylor Blau
2020-12-08 22:04   ` [PATCH v4 15/24] t5310: add branch-based checks Taylor Blau
2020-12-08 22:04   ` [PATCH v4 16/24] pack-bitmap-write: rename children to reverse_edges Taylor Blau
2020-12-08 22:04   ` [PATCH v4 17/24] pack-bitmap.c: check reads more aggressively when loading Taylor Blau
2020-12-08 22:04   ` [PATCH v4 18/24] pack-bitmap-write: build fewer intermediate bitmaps Taylor Blau
2020-12-08 22:04   ` [PATCH v4 19/24] pack-bitmap-write: ignore BITMAP_FLAG_REUSE Taylor Blau
2020-12-08 22:04   ` [PATCH v4 20/24] pack-bitmap: factor out 'bitmap_for_commit()' Taylor Blau
2020-12-08 22:05   ` [PATCH v4 21/24] pack-bitmap: factor out 'add_commit_to_bitmap()' Taylor Blau
2020-12-08 22:05   ` [PATCH v4 22/24] pack-bitmap-write: use existing bitmaps Taylor Blau
2020-12-08 22:05   ` [PATCH v4 23/24] pack-bitmap-write: relax unique revwalk condition Taylor Blau
2020-12-08 22:05   ` [PATCH v4 24/24] pack-bitmap-write: better reuse bitmaps Taylor Blau

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

  List information: http://vger.kernel.org/majordomo-info.html

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=cover.1605649533.git.me@ttaylorr.com \
    --to=me@ttaylorr.com \
    --cc=dstolee@microsoft.com \
    --cc=git@vger.kernel.org \
    --cc=gitster@pobox.com \
    --cc=martin.agren@gmail.com \
    --cc=peff@peff.net \
    --cc=szeder.dev@gmail.com \
    --subject='Re: [PATCH v2 00/24] pack-bitmap: bitmap generation improvements' \
    /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

git@vger.kernel.org list mirror (unofficial, one of many)

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://public-inbox.org/git
	git clone --mirror http://ou63pmih66umazou.onion/git
	git clone --mirror http://czquwvybam4bgbro.onion/git
	git clone --mirror http://hjrcffqmbrq6wope.onion/git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V1 git git/ https://public-inbox.org/git \
		git@vger.kernel.org
	public-inbox-index git

Example config snippet for mirrors.
Newsgroups are available over NNTP:
	nntp://news.public-inbox.org/inbox.comp.version-control.git
	nntp://7fh6tueqddpjyxjmgtdiueylzoqt6pt7hec3pukyptlmohoowvhde4yd.onion/inbox.comp.version-control.git
	nntp://ie5yzdi7fg72h7s4sdcztq5evakq23rdt33mfyfcddc5u3ndnw24ogqd.onion/inbox.comp.version-control.git
	nntp://4uok3hntl7oi7b4uf4rtfwefqeexfzil2w6kgk2jn5z2f764irre7byd.onion/inbox.comp.version-control.git
	nntp://news.gmane.io/gmane.comp.version-control.git
 note: .onion URLs require Tor: https://www.torproject.org/

code repositories for project(s) associated with this inbox:

	https://80x24.org/mirrors/git.git

AGPL code for this site: git clone https://public-inbox.org/public-inbox.git