Ben Peart fa655d8411 checkout: optimize "git checkout -b <new_branch>" ...

Skip merging the commit, updating the index and working directory if and
only if we are creating a new branch via "git checkout -b <new_branch>."
Any other checkout options will still go through the former code path.

If sparse_checkout is on, require the user to manually opt in to this
optimzed behavior by setting the config setting checkout.optimizeNewBranch
to true as we will no longer update the skip-worktree bit in the index, nor
add/remove files in the working directory to reflect the current sparse
checkout settings.

For comparison, running "git checkout -b <new_branch>" on a large repo takes:

14.6 seconds - without this patch
0.3 seconds - with this patch

Signed-off-by: Ben Peart <Ben.Peart@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

2018-08-16 11:54:57 -07:00

..

add.c

Merge branch 'ma/lockfile-cleanup'

2018-05-30 14:04:05 +09:00

am.c

Merge branch 'nd/complete-config-vars'

2018-06-25 13:22:38 -07:00

annotate.c

…

apply.c

apply: move lockfile into apply_state

2017-10-06 10:07:18 +09:00

archive.c

correct error messages for NULL packet_read_line()

2018-02-08 12:37:30 -08:00

bisect--helper.c

bisect: mention "view" as an alternative to "visualize"

2017-11-13 10:51:14 +09:00

blame.c

Merge branch 'sb/blame-color'

2018-07-24 14:50:51 -07:00

branch.c

Merge branch 'jk/branch-l-0-deprecation'

2018-07-18 12:20:31 -07:00

bundle.c

bundle: use prefix_filename with bundle path

2017-03-21 11:18:41 -07:00

cat-file.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

check-attr.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

check-ignore.c

check-ignore: fix mix of directories and other file types

2018-02-12 13:09:35 -08:00

check-mailmap.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

check-ref-format.c

Merge branch 'jc/check-ref-format-oor' into maint

2017-11-15 12:04:57 +09:00

checkout-index.c

parse-options: let OPT__FORCE take optional flags argument

2018-02-09 10:24:50 -08:00

checkout.c

checkout: optimize "git checkout -b <new_branch>"

2018-08-16 11:54:57 -07:00

clean.c

help: add --config to list all available config

2018-05-29 14:51:28 +09:00

clone.c

Merge branch 'jt/partial-clone-fsck-connectivity'

2018-07-24 14:50:47 -07:00

column.c

column: fix off-by-one default width

2018-05-13 10:45:05 +09:00

commit-graph.c

commit-graph: implement "--append" option

2018-04-11 10:43:02 +09:00

commit-tree.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

commit.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

config.c

Merge branch 'tb/config-default'

2018-07-24 14:50:46 -07:00

count-objects.c

packfile: convert has_sha1_pack to object_id

2018-05-02 13:59:49 +09:00

credential.c

credential: handle invalid arguments earlier

2017-05-30 14:45:03 +09:00

describe.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

diff-files.c

submodule: remove gitmodules_config

2017-08-03 13:11:02 -07:00

diff-index.c

Merge branch 'ma/builtin-unleak'

2017-10-07 16:27:55 +09:00

diff-tree.c

object: rename function 'typename' to 'type_name'

2018-02-14 13:10:05 -08:00

diff.c

Merge branch 'nd/diff-apply-ita'

2018-06-25 13:22:36 -07:00

difftool.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

fast-export.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

fetch-pack.c

Merge branch 'bw/protocol-v2'

2018-05-08 15:59:16 +09:00

fetch.c

Merge branch 'jt/connectivity-check-after-unshallow'

2018-07-24 14:50:44 -07:00

fmt-merge-msg.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

for-each-ref.c

provide --color option for all ref-filter users

2017-10-04 11:35:29 +09:00

fsck.c

Merge branch 'bc/object-id'

2018-05-30 14:04:10 +09:00

gc.c

Merge branch 'ma/lockfile-cleanup'

2018-05-30 14:04:05 +09:00

get-tar-commit-id.c

distinguish error versus short read from read_in_full()

2017-09-27 15:45:24 +09:00

grep.c

builtin/grep.c: add '--column' option to 'git-grep(1)'

2018-06-22 12:59:02 -07:00

hash-object.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

help.c

Merge branch 'nd/command-list'

2018-06-01 15:06:37 +09:00

index-pack.c

Merge branch 'jk/index-pack-maint'

2018-06-13 12:50:46 -07:00

init-db.c

Merge branch 'rd/init-typo'

2018-06-01 15:06:40 +09:00

interpret-trailers.c

Merge branch 'jk/trailers-parse'

2017-08-26 22:55:04 -07:00

log.c

Merge branch 'xy/format-patch-prereq-patch-id-fix'

2018-07-18 12:20:29 -07:00

ls-files.c

Merge branch 'nd/use-opt-int-set-f'

2018-06-01 15:06:38 +09:00

ls-remote.c

Merge branch 'bw/server-options'

2018-05-23 14:38:15 +09:00

ls-tree.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

mailinfo.c

prefix_filename: return newly allocated string

2017-03-21 11:18:41 -07:00

mailsplit.c

mailinfo & mailsplit: check for EOF while parsing

2017-05-08 12:18:19 +09:00

merge-base.c

Merge branch 'ma/reduce-heads-leakfix'

2017-11-15 12:14:32 +09:00

merge-file.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

merge-index.c

Convert GIT_SHA1_HEXSZ used for allocation to GIT_MAX_HEXSZ

2017-03-26 22:08:21 -07:00

merge-ours.c

Merge branch 'bw/diff-opt-impl-to-bitfields'

2017-11-09 14:31:27 +09:00

merge-recursive.c

…

merge-tree.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

merge.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

mktag.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

mktree.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

mv.c

Merge branch 'ma/lockfile-cleanup'

2018-05-30 14:04:05 +09:00

name-rev.c

name-rev: use commit-slab for rev-name instead of commit->util

2018-05-21 14:07:20 +09:00

notes.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

pack-objects.c

Merge branch 'jt/remove-pack-bitmap-global'

2018-07-18 12:20:30 -07:00

pack-redundant.c

pack-redundant: convert linked lists to use struct object_id

2018-05-02 13:59:50 +09:00

pack-refs.c

refs: add repository argument to get_main_ref_store

2018-04-12 11:38:56 +09:00

patch-id.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

prune-packed.c

packfile: convert has_sha1_pack to object_id

2018-05-02 13:59:49 +09:00

prune.c

shallow: add repository argument to is_repository_shallow

2018-05-18 08:13:10 +09:00

pull.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

push.c

transport: convert transport_push to take a struct refspec

2018-05-18 06:19:44 +09:00

read-tree.c

lock_file: move static locks into functions

2018-05-10 14:55:40 +09:00

rebase--helper.c

rebase -i: introduce --rebase-merges=[no-]rebase-cousins

2018-04-26 12:28:43 +09:00

receive-pack.c

Merge branch 'hs/push-cert-check-cleanup'

2018-07-24 14:50:48 -07:00

reflog.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

remote-ext.c

consistently use "fallthrough" comments in switches

2017-09-22 12:49:57 +09:00

remote-fd.c

remote-{ext,fd}: print usage message on invalid arguments

2017-05-30 14:45:04 +09:00

remote.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

repack.c

repack: add --keep-pack option

2018-04-16 13:52:29 +09:00

replace.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

rerere.c

avoid "write_in_full(fd, buf, len) != len" pattern

2017-09-14 15:17:59 +09:00

reset.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

rev-list.c

Merge branch 'jt/remove-pack-bitmap-global'

2018-07-18 12:20:30 -07:00

rev-parse.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

revert.c

sequencer: improve config handling

2017-12-13 11:15:14 -08:00

rm.c

Merge branch 'ma/lockfile-cleanup'

2018-05-30 14:04:05 +09:00

send-pack.c

Merge branch 'ms/send-pack-honor-config'

2018-06-28 12:53:30 -07:00

serve.c

serve: introduce git-serve

2018-03-15 12:01:08 -07:00

shortlog.c

Merge branch 'ps/contains-id-error-message'

2018-04-10 16:28:20 +09:00

show-branch.c

show-branch: note about its object flags usage

2018-05-21 14:07:20 +09:00

show-index.c

make show-index a builtin

2018-05-29 00:28:22 +09:00

show-ref.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

stripspace.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

submodule--helper.c

Merge branch 'ao/config-from-gitmodules'

2018-07-18 12:20:31 -07:00

symbolic-ref.c

refs: rename constant REF_NODEREF to REF_NO_DEREF

2017-11-06 10:31:08 +09:00

tag.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

unpack-file.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

unpack-objects.c

Merge branch 'sb/object-store-grafts'

2018-07-18 12:20:28 -07:00

update-index.c

Merge branch 'js/use-bug-macro'

2018-05-30 14:04:07 +09:00

update-ref.c

update-ref --stdin: use skip_prefix()

2018-06-04 12:26:01 +09:00

update-server-info.c

parse-options: let OPT__FORCE take optional flags argument

2018-02-09 10:24:50 -08:00

upload-archive.c

upload-archive: handle "-h" option early

2017-05-30 14:45:04 +09:00

upload-pack.c

Merge branch 'bw/protocol-v2'

2018-05-08 15:59:16 +09:00

var.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

verify-commit.c

object-store: move object access functions to object-store.h

2018-05-16 11:42:03 +09:00

verify-pack.c

config: don't include config.h by default

2017-06-15 12:56:22 -07:00

verify-tag.c

ref-filter: use "struct object_id" consistently

2018-04-09 06:14:45 +09:00

worktree.c

Merge branch 'tg/worktree-add-existing-branch'

2018-05-23 14:38:18 +09:00

write-tree.c

cache-tree: convert write_*_as_tree to object_id

2018-03-14 09:23:47 -07:00